/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
-** version 3.8.7. By combining all the individual C code files into this
+** version 3.8.9. By combining all the individual C code files into this
** single large file, the entire code can be compiled as a single translation
** unit. This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately. Performance improvements
#ifndef SQLITE_PRIVATE
# define SQLITE_PRIVATE static
#endif
-#ifndef SQLITE_API
-# define SQLITE_API
-#endif
/************** Begin file sqliteInt.h ***************************************/
/*
** 2001 September 15
#ifndef _SQLITEINT_H_
#define _SQLITEINT_H_
+/*
+** Include the header file used to customize the compiler options for MSVC.
+** This should be done first so that it can successfully prevent spurious
+** compiler warnings due to subsequent content in this file and other files
+** that are included by this file.
+*/
+/************** Include msvc.h in the middle of sqliteInt.h ******************/
+/************** Begin file msvc.h ********************************************/
+/*
+** 2015 January 12
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+******************************************************************************
+**
+** This file contains code that is specific to MSVC.
+*/
+#ifndef _MSVC_H_
+#define _MSVC_H_
+
+#if defined(_MSC_VER)
+#pragma warning(disable : 4054)
+#pragma warning(disable : 4055)
+#pragma warning(disable : 4100)
+#pragma warning(disable : 4127)
+#pragma warning(disable : 4152)
+#pragma warning(disable : 4189)
+#pragma warning(disable : 4206)
+#pragma warning(disable : 4210)
+#pragma warning(disable : 4232)
+#pragma warning(disable : 4244)
+#pragma warning(disable : 4305)
+#pragma warning(disable : 4306)
+#pragma warning(disable : 4702)
+#pragma warning(disable : 4706)
+#endif /* defined(_MSC_VER) */
+
+#endif /* _MSVC_H_ */
+
+/************** End of msvc.h ************************************************/
+/************** Continuing where we left off in sqliteInt.h ******************/
+
+/*
+** Special setup for VxWorks
+*/
+/************** Include vxworks.h in the middle of sqliteInt.h ***************/
+/************** Begin file vxworks.h *****************************************/
+/*
+** 2015-03-02
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+******************************************************************************
+**
+** This file contains code that is specific to Wind River's VxWorks
+*/
+#if defined(__RTP__) || defined(_WRS_KERNEL)
+/* This is VxWorks. Set up things specially for that OS
+*/
+#include <vxWorks.h>
+#include <pthread.h> /* amalgamator: dontcache */
+#define OS_VXWORKS 1
+#define SQLITE_OS_OTHER 0
+#define SQLITE_HOMEGROWN_RECURSIVE_MUTEX 1
+#define SQLITE_OMIT_LOAD_EXTENSION 1
+#define SQLITE_ENABLE_LOCKING_STYLE 0
+#define HAVE_UTIME 1
+#else
+/* This is not VxWorks. */
+#define OS_VXWORKS 0
+#endif /* defined(_WRS_KERNEL) */
+
+/************** End of vxworks.h *********************************************/
+/************** Continuing where we left off in sqliteInt.h ******************/
+
/*
** These #defines should enable >2GB file support on POSIX if the
** underlying operating system supports it. If the OS lacks
/*
-** Add the ability to override 'extern'
+** Provide the ability to override linkage features of the interface.
*/
#ifndef SQLITE_EXTERN
# define SQLITE_EXTERN extern
#endif
-
#ifndef SQLITE_API
# define SQLITE_API
#endif
-
+#ifndef SQLITE_CDECL
+# define SQLITE_CDECL
+#endif
+#ifndef SQLITE_STDCALL
+# define SQLITE_STDCALL
+#endif
/*
** These no-op macros are used in front of interfaces to mark those
** interfaces as either deprecated or experimental. New applications
-** should not use deprecated interfaces - they are support for backwards
+** should not use deprecated interfaces - they are supported for backwards
** compatibility only. Application writers should be aware that
** experimental interfaces are subject to change in point releases.
**
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
-#define SQLITE_VERSION "3.8.7"
-#define SQLITE_VERSION_NUMBER 3008007
-#define SQLITE_SOURCE_ID "2014-10-17 11:24:17 e4ab094f8afce0817f4074e823fabe59fc29ebb4"
+#define SQLITE_VERSION "3.8.9"
+#define SQLITE_VERSION_NUMBER 3008009
+#define SQLITE_SOURCE_ID "2015-04-08 12:16:33 8a8ffc862e96f57aa698f93de10dee28e69f6e09"
/*
** CAPI3REF: Run-Time Library Version Numbers
** See also: [sqlite_version()] and [sqlite_source_id()].
*/
SQLITE_API const char sqlite3_version[] = SQLITE_VERSION;
-SQLITE_API const char *sqlite3_libversion(void);
-SQLITE_API const char *sqlite3_sourceid(void);
-SQLITE_API int sqlite3_libversion_number(void);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_libversion(void);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_sourceid(void);
+SQLITE_API int SQLITE_STDCALL sqlite3_libversion_number(void);
/*
** CAPI3REF: Run-Time Library Compilation Options Diagnostics
** [sqlite_compileoption_get()] and the [compile_options pragma].
*/
#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS
-SQLITE_API int sqlite3_compileoption_used(const char *zOptName);
-SQLITE_API const char *sqlite3_compileoption_get(int N);
+SQLITE_API int SQLITE_STDCALL sqlite3_compileoption_used(const char *zOptName);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_compileoption_get(int N);
#endif
/*
** SQLITE_THREADSAFE=1 or =2 then mutexes are enabled by default but
** can be fully or partially disabled using a call to [sqlite3_config()]
** with the verbs [SQLITE_CONFIG_SINGLETHREAD], [SQLITE_CONFIG_MULTITHREAD],
-** or [SQLITE_CONFIG_MUTEX]. ^(The return value of the
+** or [SQLITE_CONFIG_SERIALIZED]. ^(The return value of the
** sqlite3_threadsafe() function shows only the compile-time setting of
** thread safety, not any run-time changes to that setting made by
** sqlite3_config(). In other words, the return value from sqlite3_threadsafe()
**
** See the [threading mode] documentation for additional information.
*/
-SQLITE_API int sqlite3_threadsafe(void);
+SQLITE_API int SQLITE_STDCALL sqlite3_threadsafe(void);
/*
** CAPI3REF: Database Connection Handle
** ^Calling sqlite3_close() or sqlite3_close_v2() with a NULL pointer
** argument is a harmless no-op.
*/
-SQLITE_API int sqlite3_close(sqlite3*);
-SQLITE_API int sqlite3_close_v2(sqlite3*);
+SQLITE_API int SQLITE_STDCALL sqlite3_close(sqlite3*);
+SQLITE_API int SQLITE_STDCALL sqlite3_close_v2(sqlite3*);
/*
** The type for a callback function.
** the 2nd parameter of sqlite3_exec() while sqlite3_exec() is running.
** </ul>
*/
-SQLITE_API int sqlite3_exec(
+SQLITE_API int SQLITE_STDCALL sqlite3_exec(
sqlite3*, /* An open database */
const char *sql, /* SQL to be evaluated */
int (*callback)(void*,int,char**,char**), /* Callback function */
** of the [sqlite3_io_methods] object and for the [sqlite3_file_control()]
** interface.
**
+** <ul>
+** <li>[[SQLITE_FCNTL_LOCKSTATE]]
** The [SQLITE_FCNTL_LOCKSTATE] opcode is used for debugging. This
** opcode causes the xFileControl method to write the current state of
** the lock (one of [SQLITE_LOCK_NONE], [SQLITE_LOCK_SHARED],
** [SQLITE_LOCK_RESERVED], [SQLITE_LOCK_PENDING], or [SQLITE_LOCK_EXCLUSIVE])
** into an integer that the pArg argument points to. This capability
-** is used during testing and only needs to be supported when SQLITE_TEST
-** is defined.
-** <ul>
+** is used during testing and is only available when the SQLITE_TEST
+** compile-time option is used.
+**
** <li>[[SQLITE_FCNTL_SIZE_HINT]]
** The [SQLITE_FCNTL_SIZE_HINT] opcode is used by SQLite to give the VFS
** layer a hint of how large the database file will grow to be during the
** [PRAGMA] processing continues. ^If the [SQLITE_FCNTL_PRAGMA]
** file control returns [SQLITE_OK], then the parser assumes that the
** VFS has handled the PRAGMA itself and the parser generates a no-op
-** prepared statement. ^If the [SQLITE_FCNTL_PRAGMA] file control returns
+** prepared statement if result string is NULL, or that returns a copy
+** of the result string if the string is non-NULL.
+** ^If the [SQLITE_FCNTL_PRAGMA] file control returns
** any result code other than [SQLITE_OK] or [SQLITE_NOTFOUND], that means
** that the VFS encountered an error while handling the [PRAGMA] and the
** compilation of the PRAGMA fails with an error. ^The [SQLITE_FCNTL_PRAGMA]
** pointed to by the pArg argument. This capability is used during testing
** and only needs to be supported when SQLITE_TEST is defined.
**
+** <li>[[SQLITE_FCNTL_WAL_BLOCK]]
+** The [SQLITE_FCNTL_WAL_BLOCK] is a signal to the VFS layer that it might
+** be advantageous to block on the next WAL lock if the lock is not immediately
+** available. The WAL subsystem issues this signal during rare
+** circumstances in order to fix a problem with priority inversion.
+** Applications should <em>not</em> use this file-control.
+**
** </ul>
*/
#define SQLITE_FCNTL_LOCKSTATE 1
-#define SQLITE_GET_LOCKPROXYFILE 2
-#define SQLITE_SET_LOCKPROXYFILE 3
-#define SQLITE_LAST_ERRNO 4
+#define SQLITE_FCNTL_GET_LOCKPROXYFILE 2
+#define SQLITE_FCNTL_SET_LOCKPROXYFILE 3
+#define SQLITE_FCNTL_LAST_ERRNO 4
#define SQLITE_FCNTL_SIZE_HINT 5
#define SQLITE_FCNTL_CHUNK_SIZE 6
#define SQLITE_FCNTL_FILE_POINTER 7
#define SQLITE_FCNTL_SYNC 21
#define SQLITE_FCNTL_COMMIT_PHASETWO 22
#define SQLITE_FCNTL_WIN32_SET_HANDLE 23
+#define SQLITE_FCNTL_WAL_BLOCK 24
+
+/* deprecated names */
+#define SQLITE_GET_LOCKPROXYFILE SQLITE_FCNTL_GET_LOCKPROXYFILE
+#define SQLITE_SET_LOCKPROXYFILE SQLITE_FCNTL_SET_LOCKPROXYFILE
+#define SQLITE_LAST_ERRNO SQLITE_FCNTL_LAST_ERRNO
+
/*
** CAPI3REF: Mutex Handle
** </ul>
**
** When unlocking, the same SHARED or EXCLUSIVE flag must be supplied as
-** was given no the corresponding lock.
+** was given on the corresponding lock.
**
** The xShmLock method can transition between unlocked and SHARED or
** between unlocked and EXCLUSIVE. It cannot transition between SHARED
** must return [SQLITE_OK] on success and some other [error code] upon
** failure.
*/
-SQLITE_API int sqlite3_initialize(void);
-SQLITE_API int sqlite3_shutdown(void);
-SQLITE_API int sqlite3_os_init(void);
-SQLITE_API int sqlite3_os_end(void);
+SQLITE_API int SQLITE_STDCALL sqlite3_initialize(void);
+SQLITE_API int SQLITE_STDCALL sqlite3_shutdown(void);
+SQLITE_API int SQLITE_STDCALL sqlite3_os_init(void);
+SQLITE_API int SQLITE_STDCALL sqlite3_os_end(void);
/*
** CAPI3REF: Configuring The SQLite Library
** ^If the option is unknown or SQLite is unable to set the option
** then this routine returns a non-zero [error code].
*/
-SQLITE_API int sqlite3_config(int, ...);
+SQLITE_API int SQLITE_CDECL sqlite3_config(int, ...);
/*
** CAPI3REF: Configure database connections
** ^Calls to sqlite3_db_config() return SQLITE_OK if and only if
** the call is considered successful.
*/
-SQLITE_API int sqlite3_db_config(sqlite3*, int op, ...);
+SQLITE_API int SQLITE_CDECL sqlite3_db_config(sqlite3*, int op, ...);
/*
** CAPI3REF: Memory Allocation Routines
** SQLITE_CONFIG_SERIALIZED configuration option.</dd>
**
** [[SQLITE_CONFIG_MALLOC]] <dt>SQLITE_CONFIG_MALLOC</dt>
-** <dd> ^(This option takes a single argument which is a pointer to an
-** instance of the [sqlite3_mem_methods] structure. The argument specifies
+** <dd> ^(The SQLITE_CONFIG_MALLOC option takes a single argument which is
+** a pointer to an instance of the [sqlite3_mem_methods] structure.
+** The argument specifies
** alternative low-level memory allocation routines to be used in place of
** the memory allocation routines built into SQLite.)^ ^SQLite makes
** its own private copy of the content of the [sqlite3_mem_methods] structure
** before the [sqlite3_config()] call returns.</dd>
**
** [[SQLITE_CONFIG_GETMALLOC]] <dt>SQLITE_CONFIG_GETMALLOC</dt>
-** <dd> ^(This option takes a single argument which is a pointer to an
-** instance of the [sqlite3_mem_methods] structure. The [sqlite3_mem_methods]
+** <dd> ^(The SQLITE_CONFIG_GETMALLOC option takes a single argument which
+** is a pointer to an instance of the [sqlite3_mem_methods] structure.
+** The [sqlite3_mem_methods]
** structure is filled with the currently defined memory allocation routines.)^
** This option can be used to overload the default memory allocation
** routines with a wrapper that simulations memory allocation failure or
** tracks memory usage, for example. </dd>
**
** [[SQLITE_CONFIG_MEMSTATUS]] <dt>SQLITE_CONFIG_MEMSTATUS</dt>
-** <dd> ^This option takes single argument of type int, interpreted as a
-** boolean, which enables or disables the collection of memory allocation
-** statistics. ^(When memory allocation statistics are disabled, the
-** following SQLite interfaces become non-operational:
+** <dd> ^The SQLITE_CONFIG_MEMSTATUS option takes single argument of type int,
+** interpreted as a boolean, which enables or disables the collection of
+** memory allocation statistics. ^(When memory allocation statistics are
+** disabled, the following SQLite interfaces become non-operational:
** <ul>
** <li> [sqlite3_memory_used()]
** <li> [sqlite3_memory_highwater()]
** <li> [sqlite3_soft_heap_limit64()]
-** <li> [sqlite3_status()]
+** <li> [sqlite3_status64()]
** </ul>)^
** ^Memory allocation statistics are enabled by default unless SQLite is
** compiled with [SQLITE_DEFAULT_MEMSTATUS]=0 in which case memory
** </dd>
**
** [[SQLITE_CONFIG_SCRATCH]] <dt>SQLITE_CONFIG_SCRATCH</dt>
-** <dd> ^This option specifies a static memory buffer that SQLite can use for
-** scratch memory. There are three arguments: A pointer an 8-byte
+** <dd> ^The SQLITE_CONFIG_SCRATCH option specifies a static memory buffer
+** that SQLite can use for scratch memory. ^(There are three arguments
+** to SQLITE_CONFIG_SCRATCH: A pointer an 8-byte
** aligned memory buffer from which the scratch allocations will be
** drawn, the size of each scratch allocation (sz),
-** and the maximum number of scratch allocations (N). The sz
-** argument must be a multiple of 16.
+** and the maximum number of scratch allocations (N).)^
** The first argument must be a pointer to an 8-byte aligned buffer
** of at least sz*N bytes of memory.
-** ^SQLite will use no more than two scratch buffers per thread. So
-** N should be set to twice the expected maximum number of threads.
-** ^SQLite will never require a scratch buffer that is more than 6
-** times the database page size. ^If SQLite needs needs additional
+** ^SQLite will not use more than one scratch buffers per thread.
+** ^SQLite will never request a scratch buffer that is more than 6
+** times the database page size.
+** ^If SQLite needs needs additional
** scratch memory beyond what is provided by this configuration option, then
-** [sqlite3_malloc()] will be used to obtain the memory needed.</dd>
+** [sqlite3_malloc()] will be used to obtain the memory needed.<p>
+** ^When the application provides any amount of scratch memory using
+** SQLITE_CONFIG_SCRATCH, SQLite avoids unnecessary large
+** [sqlite3_malloc|heap allocations].
+** This can help [Robson proof|prevent memory allocation failures] due to heap
+** fragmentation in low-memory embedded systems.
+** </dd>
**
** [[SQLITE_CONFIG_PAGECACHE]] <dt>SQLITE_CONFIG_PAGECACHE</dt>
-** <dd> ^This option specifies a static memory buffer that SQLite can use for
-** the database page cache with the default page cache implementation.
+** <dd> ^The SQLITE_CONFIG_PAGECACHE option specifies a static memory buffer
+** that SQLite can use for the database page cache with the default page
+** cache implementation.
** This configuration should not be used if an application-define page
-** cache implementation is loaded using the SQLITE_CONFIG_PCACHE2 option.
-** There are three arguments to this option: A pointer to 8-byte aligned
+** cache implementation is loaded using the [SQLITE_CONFIG_PCACHE2]
+** configuration option.
+** ^There are three arguments to SQLITE_CONFIG_PAGECACHE: A pointer to
+** 8-byte aligned
** memory, the size of each page buffer (sz), and the number of pages (N).
** The sz argument should be the size of the largest database page
-** (a power of two between 512 and 32768) plus a little extra for each
-** page header. ^The page header size is 20 to 40 bytes depending on
-** the host architecture. ^It is harmless, apart from the wasted memory,
-** to make sz a little too large. The first
-** argument should point to an allocation of at least sz*N bytes of memory.
+** (a power of two between 512 and 65536) plus some extra bytes for each
+** page header. ^The number of extra bytes needed by the page header
+** can be determined using the [SQLITE_CONFIG_PCACHE_HDRSZ] option
+** to [sqlite3_config()].
+** ^It is harmless, apart from the wasted memory,
+** for the sz parameter to be larger than necessary. The first
+** argument should pointer to an 8-byte aligned block of memory that
+** is at least sz*N bytes of memory, otherwise subsequent behavior is
+** undefined.
** ^SQLite will use the memory provided by the first argument to satisfy its
** memory needs for the first N pages that it adds to cache. ^If additional
** page cache memory is needed beyond what is provided by this option, then
-** SQLite goes to [sqlite3_malloc()] for the additional storage space.
-** The pointer in the first argument must
-** be aligned to an 8-byte boundary or subsequent behavior of SQLite
-** will be undefined.</dd>
+** SQLite goes to [sqlite3_malloc()] for the additional storage space.</dd>
**
** [[SQLITE_CONFIG_HEAP]] <dt>SQLITE_CONFIG_HEAP</dt>
-** <dd> ^This option specifies a static memory buffer that SQLite will use
-** for all of its dynamic memory allocation needs beyond those provided
-** for by [SQLITE_CONFIG_SCRATCH] and [SQLITE_CONFIG_PAGECACHE].
-** There are three arguments: An 8-byte aligned pointer to the memory,
+** <dd> ^The SQLITE_CONFIG_HEAP option specifies a static memory buffer
+** that SQLite will use for all of its dynamic memory allocation needs
+** beyond those provided for by [SQLITE_CONFIG_SCRATCH] and
+** [SQLITE_CONFIG_PAGECACHE].
+** ^The SQLITE_CONFIG_HEAP option is only available if SQLite is compiled
+** with either [SQLITE_ENABLE_MEMSYS3] or [SQLITE_ENABLE_MEMSYS5] and returns
+** [SQLITE_ERROR] if invoked otherwise.
+** ^There are three arguments to SQLITE_CONFIG_HEAP:
+** An 8-byte aligned pointer to the memory,
** the number of bytes in the memory buffer, and the minimum allocation size.
** ^If the first pointer (the memory pointer) is NULL, then SQLite reverts
** to using its default memory allocator (the system malloc() implementation),
** undoing any prior invocation of [SQLITE_CONFIG_MALLOC]. ^If the
-** memory pointer is not NULL and either [SQLITE_ENABLE_MEMSYS3] or
-** [SQLITE_ENABLE_MEMSYS5] are defined, then the alternative memory
+** memory pointer is not NULL then the alternative memory
** allocator is engaged to handle all of SQLites memory allocation needs.
** The first pointer (the memory pointer) must be aligned to an 8-byte
** boundary or subsequent behavior of SQLite will be undefined.
** for the minimum allocation size are 2**5 through 2**8.</dd>
**
** [[SQLITE_CONFIG_MUTEX]] <dt>SQLITE_CONFIG_MUTEX</dt>
-** <dd> ^(This option takes a single argument which is a pointer to an
-** instance of the [sqlite3_mutex_methods] structure. The argument specifies
-** alternative low-level mutex routines to be used in place
-** the mutex routines built into SQLite.)^ ^SQLite makes a copy of the
-** content of the [sqlite3_mutex_methods] structure before the call to
+** <dd> ^(The SQLITE_CONFIG_MUTEX option takes a single argument which is a
+** pointer to an instance of the [sqlite3_mutex_methods] structure.
+** The argument specifies alternative low-level mutex routines to be used
+** in place the mutex routines built into SQLite.)^ ^SQLite makes a copy of
+** the content of the [sqlite3_mutex_methods] structure before the call to
** [sqlite3_config()] returns. ^If SQLite is compiled with
** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
** the entire mutexing subsystem is omitted from the build and hence calls to
** return [SQLITE_ERROR].</dd>
**
** [[SQLITE_CONFIG_GETMUTEX]] <dt>SQLITE_CONFIG_GETMUTEX</dt>
-** <dd> ^(This option takes a single argument which is a pointer to an
-** instance of the [sqlite3_mutex_methods] structure. The
+** <dd> ^(The SQLITE_CONFIG_GETMUTEX option takes a single argument which
+** is a pointer to an instance of the [sqlite3_mutex_methods] structure. The
** [sqlite3_mutex_methods]
** structure is filled with the currently defined mutex routines.)^
** This option can be used to overload the default mutex allocation
** return [SQLITE_ERROR].</dd>
**
** [[SQLITE_CONFIG_LOOKASIDE]] <dt>SQLITE_CONFIG_LOOKASIDE</dt>
-** <dd> ^(This option takes two arguments that determine the default
-** memory allocation for the lookaside memory allocator on each
-** [database connection]. The first argument is the
+** <dd> ^(The SQLITE_CONFIG_LOOKASIDE option takes two arguments that determine
+** the default size of lookaside memory on each [database connection].
+** The first argument is the
** size of each lookaside buffer slot and the second is the number of
-** slots allocated to each database connection.)^ ^(This option sets the
-** <i>default</i> lookaside size. The [SQLITE_DBCONFIG_LOOKASIDE]
-** verb to [sqlite3_db_config()] can be used to change the lookaside
+** slots allocated to each database connection.)^ ^(SQLITE_CONFIG_LOOKASIDE
+** sets the <i>default</i> lookaside size. The [SQLITE_DBCONFIG_LOOKASIDE]
+** option to [sqlite3_db_config()] can be used to change the lookaside
** configuration on individual connections.)^ </dd>
**
** [[SQLITE_CONFIG_PCACHE2]] <dt>SQLITE_CONFIG_PCACHE2</dt>
-** <dd> ^(This option takes a single argument which is a pointer to
-** an [sqlite3_pcache_methods2] object. This object specifies the interface
-** to a custom page cache implementation.)^ ^SQLite makes a copy of the
-** object and uses it for page cache memory allocations.</dd>
+** <dd> ^(The SQLITE_CONFIG_PCACHE2 option takes a single argument which is
+** a pointer to an [sqlite3_pcache_methods2] object. This object specifies
+** the interface to a custom page cache implementation.)^
+** ^SQLite makes a copy of the [sqlite3_pcache_methods2] object.</dd>
**
** [[SQLITE_CONFIG_GETPCACHE2]] <dt>SQLITE_CONFIG_GETPCACHE2</dt>
-** <dd> ^(This option takes a single argument which is a pointer to an
-** [sqlite3_pcache_methods2] object. SQLite copies of the current
-** page cache implementation into that object.)^ </dd>
+** <dd> ^(The SQLITE_CONFIG_GETPCACHE2 option takes a single argument which
+** is a pointer to an [sqlite3_pcache_methods2] object. SQLite copies of
+** the current page cache implementation into that object.)^ </dd>
**
** [[SQLITE_CONFIG_LOG]] <dt>SQLITE_CONFIG_LOG</dt>
** <dd> The SQLITE_CONFIG_LOG option is used to configure the SQLite
** function must be threadsafe. </dd>
**
** [[SQLITE_CONFIG_URI]] <dt>SQLITE_CONFIG_URI
-** <dd>^(This option takes a single argument of type int. If non-zero, then
-** URI handling is globally enabled. If the parameter is zero, then URI handling
-** is globally disabled.)^ ^If URI handling is globally enabled, all filenames
-** passed to [sqlite3_open()], [sqlite3_open_v2()], [sqlite3_open16()] or
+** <dd>^(The SQLITE_CONFIG_URI option takes a single argument of type int.
+** If non-zero, then URI handling is globally enabled. If the parameter is zero,
+** then URI handling is globally disabled.)^ ^If URI handling is globally
+** enabled, all filenames passed to [sqlite3_open()], [sqlite3_open_v2()],
+** [sqlite3_open16()] or
** specified as part of [ATTACH] commands are interpreted as URIs, regardless
** of whether or not the [SQLITE_OPEN_URI] flag is set when the database
** connection is opened. ^If it is globally disabled, filenames are
** [SQLITE_USE_URI] symbol defined.)^
**
** [[SQLITE_CONFIG_COVERING_INDEX_SCAN]] <dt>SQLITE_CONFIG_COVERING_INDEX_SCAN
-** <dd>^This option takes a single integer argument which is interpreted as
-** a boolean in order to enable or disable the use of covering indices for
-** full table scans in the query optimizer. ^The default setting is determined
+** <dd>^The SQLITE_CONFIG_COVERING_INDEX_SCAN option takes a single integer
+** argument which is interpreted as a boolean in order to enable or disable
+** the use of covering indices for full table scans in the query optimizer.
+** ^The default setting is determined
** by the [SQLITE_ALLOW_COVERING_INDEX_SCAN] compile-time option, or is "on"
** if that compile-time option is omitted.
** The ability to disable the use of covering indices for full table scans
** ^The default setting can be overridden by each database connection using
** either the [PRAGMA mmap_size] command, or by using the
** [SQLITE_FCNTL_MMAP_SIZE] file control. ^(The maximum allowed mmap size
-** cannot be changed at run-time. Nor may the maximum allowed mmap size
-** exceed the compile-time maximum mmap size set by the
+** will be silently truncated if necessary so that it does not exceed the
+** compile-time maximum mmap size set by the
** [SQLITE_MAX_MMAP_SIZE] compile-time option.)^
** ^If either argument to this option is negative, then that argument is
** changed to its compile-time default.
**
** [[SQLITE_CONFIG_WIN32_HEAPSIZE]]
** <dt>SQLITE_CONFIG_WIN32_HEAPSIZE
-** <dd>^This option is only available if SQLite is compiled for Windows
-** with the [SQLITE_WIN32_MALLOC] pre-processor macro defined.
-** SQLITE_CONFIG_WIN32_HEAPSIZE takes a 32-bit unsigned integer value
+** <dd>^The SQLITE_CONFIG_WIN32_HEAPSIZE option is only available if SQLite is
+** compiled for Windows with the [SQLITE_WIN32_MALLOC] pre-processor macro
+** defined. ^SQLITE_CONFIG_WIN32_HEAPSIZE takes a 32-bit unsigned integer value
** that specifies the maximum size of the created heap.
+**
+** [[SQLITE_CONFIG_PCACHE_HDRSZ]]
+** <dt>SQLITE_CONFIG_PCACHE_HDRSZ
+** <dd>^The SQLITE_CONFIG_PCACHE_HDRSZ option takes a single parameter which
+** is a pointer to an integer and writes into that integer the number of extra
+** bytes per page required for each page in [SQLITE_CONFIG_PAGECACHE].
+** The amount of extra space required can change depending on the compiler,
+** target platform, and SQLite version.
+**
+** [[SQLITE_CONFIG_PMASZ]]
+** <dt>SQLITE_CONFIG_PMASZ
+** <dd>^The SQLITE_CONFIG_PMASZ option takes a single parameter which
+** is an unsigned integer and sets the "Minimum PMA Size" for the multithreaded
+** sorter to that integer. The default minimum PMA Size is set by the
+** [SQLITE_SORTER_PMASZ] compile-time option. New threads are launched
+** to help with sort operations when multithreaded sorting
+** is enabled (using the [PRAGMA threads] command) and the amount of content
+** to be sorted exceeds the page size times the minimum of the
+** [PRAGMA cache_size] setting and this value.
** </dl>
*/
#define SQLITE_CONFIG_SINGLETHREAD 1 /* nil */
#define SQLITE_CONFIG_SQLLOG 21 /* xSqllog, void* */
#define SQLITE_CONFIG_MMAP_SIZE 22 /* sqlite3_int64, sqlite3_int64 */
#define SQLITE_CONFIG_WIN32_HEAPSIZE 23 /* int nByte */
+#define SQLITE_CONFIG_PCACHE_HDRSZ 24 /* int *psz */
+#define SQLITE_CONFIG_PMASZ 25 /* unsigned int szPma */
/*
** CAPI3REF: Database Connection Configuration Options
** [extended result codes] feature of SQLite. ^The extended result
** codes are disabled by default for historical compatibility.
*/
-SQLITE_API int sqlite3_extended_result_codes(sqlite3*, int onoff);
+SQLITE_API int SQLITE_STDCALL sqlite3_extended_result_codes(sqlite3*, int onoff);
/*
** CAPI3REF: Last Insert Rowid
** unpredictable and might not equal either the old or the new
** last insert [rowid].
*/
-SQLITE_API sqlite3_int64 sqlite3_last_insert_rowid(sqlite3*);
+SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_last_insert_rowid(sqlite3*);
/*
** CAPI3REF: Count The Number Of Rows Modified
**
-** ^This function returns the number of database rows that were changed
-** or inserted or deleted by the most recently completed SQL statement
-** on the [database connection] specified by the first parameter.
-** ^(Only changes that are directly specified by the [INSERT], [UPDATE],
-** or [DELETE] statement are counted. Auxiliary changes caused by
-** triggers or [foreign key actions] are not counted.)^ Use the
-** [sqlite3_total_changes()] function to find the total number of changes
-** including changes caused by triggers and foreign key actions.
-**
-** ^Changes to a view that are simulated by an [INSTEAD OF trigger]
-** are not counted. Only real table changes are counted.
-**
-** ^(A "row change" is a change to a single row of a single table
-** caused by an INSERT, DELETE, or UPDATE statement. Rows that
-** are changed as side effects of [REPLACE] constraint resolution,
-** rollback, ABORT processing, [DROP TABLE], or by any other
-** mechanisms do not count as direct row changes.)^
-**
-** A "trigger context" is a scope of execution that begins and
-** ends with the script of a [CREATE TRIGGER | trigger].
-** Most SQL statements are
-** evaluated outside of any trigger. This is the "top level"
-** trigger context. If a trigger fires from the top level, a
-** new trigger context is entered for the duration of that one
-** trigger. Subtriggers create subcontexts for their duration.
-**
-** ^Calling [sqlite3_exec()] or [sqlite3_step()] recursively does
-** not create a new trigger context.
-**
-** ^This function returns the number of direct row changes in the
-** most recent INSERT, UPDATE, or DELETE statement within the same
-** trigger context.
-**
-** ^Thus, when called from the top level, this function returns the
-** number of changes in the most recent INSERT, UPDATE, or DELETE
-** that also occurred at the top level. ^(Within the body of a trigger,
-** the sqlite3_changes() interface can be called to find the number of
-** changes in the most recently completed INSERT, UPDATE, or DELETE
-** statement within the body of the same trigger.
-** However, the number returned does not include changes
-** caused by subtriggers since those have their own context.)^
+** ^This function returns the number of rows modified, inserted or
+** deleted by the most recently completed INSERT, UPDATE or DELETE
+** statement on the database connection specified by the only parameter.
+** ^Executing any other type of SQL statement does not modify the value
+** returned by this function.
+**
+** ^Only changes made directly by the INSERT, UPDATE or DELETE statement are
+** considered - auxiliary changes caused by [CREATE TRIGGER | triggers],
+** [foreign key actions] or [REPLACE] constraint resolution are not counted.
+**
+** Changes to a view that are intercepted by
+** [INSTEAD OF trigger | INSTEAD OF triggers] are not counted. ^The value
+** returned by sqlite3_changes() immediately after an INSERT, UPDATE or
+** DELETE statement run on a view is always zero. Only changes made to real
+** tables are counted.
+**
+** Things are more complicated if the sqlite3_changes() function is
+** executed while a trigger program is running. This may happen if the
+** program uses the [changes() SQL function], or if some other callback
+** function invokes sqlite3_changes() directly. Essentially:
+**
+** <ul>
+** <li> ^(Before entering a trigger program the value returned by
+** sqlite3_changes() function is saved. After the trigger program
+** has finished, the original value is restored.)^
+**
+** <li> ^(Within a trigger program each INSERT, UPDATE and DELETE
+** statement sets the value returned by sqlite3_changes()
+** upon completion as normal. Of course, this value will not include
+** any changes performed by sub-triggers, as the sqlite3_changes()
+** value will be saved and restored after each sub-trigger has run.)^
+** </ul>
+**
+** ^This means that if the changes() SQL function (or similar) is used
+** by the first INSERT, UPDATE or DELETE statement within a trigger, it
+** returns the value as set when the calling statement began executing.
+** ^If it is used by the second or subsequent such statement within a trigger
+** program, the value returned reflects the number of rows modified by the
+** previous INSERT, UPDATE or DELETE statement within the same trigger.
**
** See also the [sqlite3_total_changes()] interface, the
** [count_changes pragma], and the [changes() SQL function].
** while [sqlite3_changes()] is running then the value returned
** is unpredictable and not meaningful.
*/
-SQLITE_API int sqlite3_changes(sqlite3*);
+SQLITE_API int SQLITE_STDCALL sqlite3_changes(sqlite3*);
/*
** CAPI3REF: Total Number Of Rows Modified
**
-** ^This function returns the number of row changes caused by [INSERT],
-** [UPDATE] or [DELETE] statements since the [database connection] was opened.
-** ^(The count returned by sqlite3_total_changes() includes all changes
-** from all [CREATE TRIGGER | trigger] contexts and changes made by
-** [foreign key actions]. However,
-** the count does not include changes used to implement [REPLACE] constraints,
-** do rollbacks or ABORT processing, or [DROP TABLE] processing. The
-** count does not include rows of views that fire an [INSTEAD OF trigger],
-** though if the INSTEAD OF trigger makes changes of its own, those changes
-** are counted.)^
-** ^The sqlite3_total_changes() function counts the changes as soon as
-** the statement that makes them is completed (when the statement handle
-** is passed to [sqlite3_reset()] or [sqlite3_finalize()]).
-**
+** ^This function returns the total number of rows inserted, modified or
+** deleted by all [INSERT], [UPDATE] or [DELETE] statements completed
+** since the database connection was opened, including those executed as
+** part of trigger programs. ^Executing any other type of SQL statement
+** does not affect the value returned by sqlite3_total_changes().
+**
+** ^Changes made as part of [foreign key actions] are included in the
+** count, but those made as part of REPLACE constraint resolution are
+** not. ^Changes to a view that are intercepted by INSTEAD OF triggers
+** are not counted.
+**
** See also the [sqlite3_changes()] interface, the
** [count_changes pragma], and the [total_changes() SQL function].
**
** while [sqlite3_total_changes()] is running then the value
** returned is unpredictable and not meaningful.
*/
-SQLITE_API int sqlite3_total_changes(sqlite3*);
+SQLITE_API int SQLITE_STDCALL sqlite3_total_changes(sqlite3*);
/*
** CAPI3REF: Interrupt A Long-Running Query
** If the database connection closes while [sqlite3_interrupt()]
** is running then bad things will likely happen.
*/
-SQLITE_API void sqlite3_interrupt(sqlite3*);
+SQLITE_API void SQLITE_STDCALL sqlite3_interrupt(sqlite3*);
/*
** CAPI3REF: Determine If An SQL Statement Is Complete
** The input to [sqlite3_complete16()] must be a zero-terminated
** UTF-16 string in native byte order.
*/
-SQLITE_API int sqlite3_complete(const char *sql);
-SQLITE_API int sqlite3_complete16(const void *sql);
+SQLITE_API int SQLITE_STDCALL sqlite3_complete(const char *sql);
+SQLITE_API int SQLITE_STDCALL sqlite3_complete16(const void *sql);
/*
** CAPI3REF: Register A Callback To Handle SQLITE_BUSY Errors
+** KEYWORDS: {busy-handler callback} {busy handler}
**
** ^The sqlite3_busy_handler(D,X,P) routine sets a callback function X
** that might be invoked with argument P whenever
** ^The first argument to the busy handler is a copy of the void* pointer which
** is the third argument to sqlite3_busy_handler(). ^The second argument to
** the busy handler callback is the number of times that the busy handler has
-** been invoked for the same locking event. ^If the
+** been invoked previously for the same locking event. ^If the
** busy callback returns 0, then no additional attempts are made to
** access the database and [SQLITE_BUSY] is returned
** to the application.
** A busy handler must not close the database connection
** or [prepared statement] that invoked the busy handler.
*/
-SQLITE_API int sqlite3_busy_handler(sqlite3*, int(*)(void*,int), void*);
+SQLITE_API int SQLITE_STDCALL sqlite3_busy_handler(sqlite3*, int(*)(void*,int), void*);
/*
** CAPI3REF: Set A Busy Timeout
**
** See also: [PRAGMA busy_timeout]
*/
-SQLITE_API int sqlite3_busy_timeout(sqlite3*, int ms);
+SQLITE_API int SQLITE_STDCALL sqlite3_busy_timeout(sqlite3*, int ms);
/*
** CAPI3REF: Convenience Routines For Running Queries
** reflected in subsequent calls to [sqlite3_errcode()] or
** [sqlite3_errmsg()].
*/
-SQLITE_API int sqlite3_get_table(
+SQLITE_API int SQLITE_STDCALL sqlite3_get_table(
sqlite3 *db, /* An open database */
const char *zSql, /* SQL to be evaluated */
char ***pazResult, /* Results of the query */
int *pnColumn, /* Number of result columns written here */
char **pzErrmsg /* Error msg written here */
);
-SQLITE_API void sqlite3_free_table(char **result);
+SQLITE_API void SQLITE_STDCALL sqlite3_free_table(char **result);
/*
** CAPI3REF: Formatted String Printing Functions
**
** These routines are work-alikes of the "printf()" family of functions
** from the standard C library.
+** These routines understand most of the common K&R formatting options,
+** plus some additional non-standard formats, detailed below.
+** Note that some of the more obscure formatting options from recent
+** C-library standards are omitted from this implementation.
**
** ^The sqlite3_mprintf() and sqlite3_vmprintf() routines write their
** results into memory obtained from [sqlite3_malloc()].
** These routines all implement some additional formatting
** options that are useful for constructing SQL statements.
** All of the usual printf() formatting options apply. In addition, there
-** is are "%q", "%Q", and "%z" options.
+** is are "%q", "%Q", "%w" and "%z" options.
**
** ^(The %q option works like %s in that it substitutes a nul-terminated
** string from the argument list. But %q also doubles every '\'' character.
** The code above will render a correct SQL statement in the zSQL
** variable even if the zText variable is a NULL pointer.
**
+** ^(The "%w" formatting option is like "%q" except that it expects to
+** be contained within double-quotes instead of single quotes, and it
+** escapes the double-quote character instead of the single-quote
+** character.)^ The "%w" formatting option is intended for safely inserting
+** table and column names into a constructed SQL statement.
+**
** ^(The "%z" formatting option works like "%s" but with the
** addition that after the string has been read and copied into
** the result, [sqlite3_free()] is called on the input string.)^
*/
-SQLITE_API char *sqlite3_mprintf(const char*,...);
-SQLITE_API char *sqlite3_vmprintf(const char*, va_list);
-SQLITE_API char *sqlite3_snprintf(int,char*,const char*, ...);
-SQLITE_API char *sqlite3_vsnprintf(int,char*,const char*, va_list);
+SQLITE_API char *SQLITE_CDECL sqlite3_mprintf(const char*,...);
+SQLITE_API char *SQLITE_STDCALL sqlite3_vmprintf(const char*, va_list);
+SQLITE_API char *SQLITE_CDECL sqlite3_snprintf(int,char*,const char*, ...);
+SQLITE_API char *SQLITE_STDCALL sqlite3_vsnprintf(int,char*,const char*, va_list);
/*
** CAPI3REF: Memory Allocation Subsystem
** a block of memory after it has been released using
** [sqlite3_free()] or [sqlite3_realloc()].
*/
-SQLITE_API void *sqlite3_malloc(int);
-SQLITE_API void *sqlite3_malloc64(sqlite3_uint64);
-SQLITE_API void *sqlite3_realloc(void*, int);
-SQLITE_API void *sqlite3_realloc64(void*, sqlite3_uint64);
-SQLITE_API void sqlite3_free(void*);
-SQLITE_API sqlite3_uint64 sqlite3_msize(void*);
+SQLITE_API void *SQLITE_STDCALL sqlite3_malloc(int);
+SQLITE_API void *SQLITE_STDCALL sqlite3_malloc64(sqlite3_uint64);
+SQLITE_API void *SQLITE_STDCALL sqlite3_realloc(void*, int);
+SQLITE_API void *SQLITE_STDCALL sqlite3_realloc64(void*, sqlite3_uint64);
+SQLITE_API void SQLITE_STDCALL sqlite3_free(void*);
+SQLITE_API sqlite3_uint64 SQLITE_STDCALL sqlite3_msize(void*);
/*
** CAPI3REF: Memory Allocator Statistics
** by [sqlite3_memory_highwater(1)] is the high-water mark
** prior to the reset.
*/
-SQLITE_API sqlite3_int64 sqlite3_memory_used(void);
-SQLITE_API sqlite3_int64 sqlite3_memory_highwater(int resetFlag);
+SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_memory_used(void);
+SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_memory_highwater(int resetFlag);
/*
** CAPI3REF: Pseudo-Random Number Generator
** applications to access the same PRNG for other purposes.
**
** ^A call to this routine stores N bytes of randomness into buffer P.
-** ^If N is less than one, then P can be a NULL pointer.
+** ^The P parameter can be a NULL pointer.
**
** ^If this routine has not been previously called or if the previous
-** call had N less than one, then the PRNG is seeded using randomness
-** obtained from the xRandomness method of the default [sqlite3_vfs] object.
-** ^If the previous call to this routine had an N of 1 or more then
-** the pseudo-randomness is generated
+** call had N less than one or a NULL pointer for P, then the PRNG is
+** seeded using randomness obtained from the xRandomness method of
+** the default [sqlite3_vfs] object.
+** ^If the previous call to this routine had an N of 1 or more and a
+** non-NULL P then the pseudo-randomness is generated
** internally and without recourse to the [sqlite3_vfs] xRandomness
** method.
*/
-SQLITE_API void sqlite3_randomness(int N, void *P);
+SQLITE_API void SQLITE_STDCALL sqlite3_randomness(int N, void *P);
/*
** CAPI3REF: Compile-Time Authorization Callbacks
** as stated in the previous paragraph, sqlite3_step() invokes
** sqlite3_prepare_v2() to reprepare a statement after a schema change.
*/
-SQLITE_API int sqlite3_set_authorizer(
+SQLITE_API int SQLITE_STDCALL sqlite3_set_authorizer(
sqlite3*,
int (*xAuth)(void*,int,const char*,const char*,const char*,const char*),
void *pUserData
** sqlite3_profile() function is considered experimental and is
** subject to change in future versions of SQLite.
*/
-SQLITE_API void *sqlite3_trace(sqlite3*, void(*xTrace)(void*,const char*), void*);
-SQLITE_API SQLITE_EXPERIMENTAL void *sqlite3_profile(sqlite3*,
+SQLITE_API void *SQLITE_STDCALL sqlite3_trace(sqlite3*, void(*xTrace)(void*,const char*), void*);
+SQLITE_API SQLITE_EXPERIMENTAL void *SQLITE_STDCALL sqlite3_profile(sqlite3*,
void(*xProfile)(void*,const char*,sqlite3_uint64), void*);
/*
** database connections for the meaning of "modify" in this paragraph.
**
*/
-SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);
+SQLITE_API void SQLITE_STDCALL sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);
/*
** CAPI3REF: Opening A New Database Connection
**
** See also: [sqlite3_temp_directory]
*/
-SQLITE_API int sqlite3_open(
+SQLITE_API int SQLITE_STDCALL sqlite3_open(
const char *filename, /* Database filename (UTF-8) */
sqlite3 **ppDb /* OUT: SQLite db handle */
);
-SQLITE_API int sqlite3_open16(
+SQLITE_API int SQLITE_STDCALL sqlite3_open16(
const void *filename, /* Database filename (UTF-16) */
sqlite3 **ppDb /* OUT: SQLite db handle */
);
-SQLITE_API int sqlite3_open_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_open_v2(
const char *filename, /* Database filename (UTF-8) */
sqlite3 **ppDb, /* OUT: SQLite db handle */
int flags, /* Flags */
** VFS method, then the behavior of this routine is undefined and probably
** undesirable.
*/
-SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam);
-SQLITE_API int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault);
-SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_uri_parameter(const char *zFilename, const char *zParam);
+SQLITE_API int SQLITE_STDCALL sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault);
+SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_uri_int64(const char*, const char*, sqlite3_int64);
/*
** CAPI3REF: Error Codes And Messages
**
-** ^The sqlite3_errcode() interface returns the numeric [result code] or
-** [extended result code] for the most recent failed sqlite3_* API call
-** associated with a [database connection]. If a prior API call failed
-** but the most recent API call succeeded, the return value from
-** sqlite3_errcode() is undefined. ^The sqlite3_extended_errcode()
+** ^If the most recent sqlite3_* API call associated with
+** [database connection] D failed, then the sqlite3_errcode(D) interface
+** returns the numeric [result code] or [extended result code] for that
+** API call.
+** If the most recent API call was successful,
+** then the return value from sqlite3_errcode() is undefined.
+** ^The sqlite3_extended_errcode()
** interface is the same except that it always returns the
** [extended result code] even when extended result codes are
** disabled.
** was invoked incorrectly by the application. In that case, the
** error code and message may or may not be set.
*/
-SQLITE_API int sqlite3_errcode(sqlite3 *db);
-SQLITE_API int sqlite3_extended_errcode(sqlite3 *db);
-SQLITE_API const char *sqlite3_errmsg(sqlite3*);
-SQLITE_API const void *sqlite3_errmsg16(sqlite3*);
-SQLITE_API const char *sqlite3_errstr(int);
+SQLITE_API int SQLITE_STDCALL sqlite3_errcode(sqlite3 *db);
+SQLITE_API int SQLITE_STDCALL sqlite3_extended_errcode(sqlite3 *db);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_errmsg(sqlite3*);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_errmsg16(sqlite3*);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_errstr(int);
/*
** CAPI3REF: SQL Statement Object
**
** New run-time limit categories may be added in future releases.
*/
-SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal);
+SQLITE_API int SQLITE_STDCALL sqlite3_limit(sqlite3*, int id, int newVal);
/*
** CAPI3REF: Run-Time Limit Categories
** interfaces use UTF-8, and sqlite3_prepare16() and sqlite3_prepare16_v2()
** use UTF-16.
**
-** ^If the nByte argument is less than zero, then zSql is read up to the
-** first zero terminator. ^If nByte is non-negative, then it is the maximum
-** number of bytes read from zSql. ^When nByte is non-negative, the
-** zSql string ends at either the first '\000' or '\u0000' character or
-** the nByte-th byte, whichever comes first. If the caller knows
-** that the supplied string is nul-terminated, then there is a small
-** performance advantage to be gained by passing an nByte parameter that
-** is equal to the number of bytes in the input string <i>including</i>
-** the nul-terminator bytes as this saves SQLite from having to
-** make a copy of the input string.
+** ^If the nByte argument is negative, then zSql is read up to the
+** first zero terminator. ^If nByte is positive, then it is the
+** number of bytes read from zSql. ^If nByte is zero, then no prepared
+** statement is generated.
+** If the caller knows that the supplied string is nul-terminated, then
+** there is a small performance advantage to passing an nByte parameter that
+** is the number of bytes in the input string <i>including</i>
+** the nul-terminator.
**
** ^If pzTail is not NULL then *pzTail is made to point to the first byte
** past the end of the first SQL statement in zSql. These routines only
** </li>
** </ol>
*/
-SQLITE_API int sqlite3_prepare(
+SQLITE_API int SQLITE_STDCALL sqlite3_prepare(
sqlite3 *db, /* Database handle */
const char *zSql, /* SQL statement, UTF-8 encoded */
int nByte, /* Maximum length of zSql in bytes. */
sqlite3_stmt **ppStmt, /* OUT: Statement handle */
const char **pzTail /* OUT: Pointer to unused portion of zSql */
);
-SQLITE_API int sqlite3_prepare_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_prepare_v2(
sqlite3 *db, /* Database handle */
const char *zSql, /* SQL statement, UTF-8 encoded */
int nByte, /* Maximum length of zSql in bytes. */
sqlite3_stmt **ppStmt, /* OUT: Statement handle */
const char **pzTail /* OUT: Pointer to unused portion of zSql */
);
-SQLITE_API int sqlite3_prepare16(
+SQLITE_API int SQLITE_STDCALL sqlite3_prepare16(
sqlite3 *db, /* Database handle */
const void *zSql, /* SQL statement, UTF-16 encoded */
int nByte, /* Maximum length of zSql in bytes. */
sqlite3_stmt **ppStmt, /* OUT: Statement handle */
const void **pzTail /* OUT: Pointer to unused portion of zSql */
);
-SQLITE_API int sqlite3_prepare16_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_prepare16_v2(
sqlite3 *db, /* Database handle */
const void *zSql, /* SQL statement, UTF-16 encoded */
int nByte, /* Maximum length of zSql in bytes. */
** SQL text used to create a [prepared statement] if that statement was
** compiled using either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()].
*/
-SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_sql(sqlite3_stmt *pStmt);
/*
** CAPI3REF: Determine If An SQL Statement Writes The Database
** change the configuration of a database connection, they do not make
** changes to the content of the database files on disk.
*/
-SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt);
+SQLITE_API int SQLITE_STDCALL sqlite3_stmt_readonly(sqlite3_stmt *pStmt);
/*
** CAPI3REF: Determine If A Prepared Statement Has Been Reset
** for example, in diagnostic routines to search for prepared
** statements that are holding a transaction open.
*/
-SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*);
+SQLITE_API int SQLITE_STDCALL sqlite3_stmt_busy(sqlite3_stmt*);
/*
** CAPI3REF: Dynamically Typed Value Object
** See also: [sqlite3_bind_parameter_count()],
** [sqlite3_bind_parameter_name()], and [sqlite3_bind_parameter_index()].
*/
-SQLITE_API int sqlite3_bind_blob(sqlite3_stmt*, int, const void*, int n, void(*)(void*));
-SQLITE_API int sqlite3_bind_blob64(sqlite3_stmt*, int, const void*, sqlite3_uint64,
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_blob(sqlite3_stmt*, int, const void*, int n, void(*)(void*));
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_blob64(sqlite3_stmt*, int, const void*, sqlite3_uint64,
void(*)(void*));
-SQLITE_API int sqlite3_bind_double(sqlite3_stmt*, int, double);
-SQLITE_API int sqlite3_bind_int(sqlite3_stmt*, int, int);
-SQLITE_API int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64);
-SQLITE_API int sqlite3_bind_null(sqlite3_stmt*, int);
-SQLITE_API int sqlite3_bind_text(sqlite3_stmt*,int,const char*,int,void(*)(void*));
-SQLITE_API int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*));
-SQLITE_API int sqlite3_bind_text64(sqlite3_stmt*, int, const char*, sqlite3_uint64,
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_double(sqlite3_stmt*, int, double);
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_int(sqlite3_stmt*, int, int);
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64);
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_null(sqlite3_stmt*, int);
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_text(sqlite3_stmt*,int,const char*,int,void(*)(void*));
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*));
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_text64(sqlite3_stmt*, int, const char*, sqlite3_uint64,
void(*)(void*), unsigned char encoding);
-SQLITE_API int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*);
-SQLITE_API int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n);
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*);
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n);
/*
** CAPI3REF: Number Of SQL Parameters
** [sqlite3_bind_parameter_name()], and
** [sqlite3_bind_parameter_index()].
*/
-SQLITE_API int sqlite3_bind_parameter_count(sqlite3_stmt*);
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_parameter_count(sqlite3_stmt*);
/*
** CAPI3REF: Name Of A Host Parameter
** [sqlite3_bind_parameter_count()], and
** [sqlite3_bind_parameter_index()].
*/
-SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt*, int);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_bind_parameter_name(sqlite3_stmt*, int);
/*
** CAPI3REF: Index Of A Parameter With A Given Name
** [sqlite3_bind_parameter_count()], and
** [sqlite3_bind_parameter_index()].
*/
-SQLITE_API int sqlite3_bind_parameter_index(sqlite3_stmt*, const char *zName);
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_parameter_index(sqlite3_stmt*, const char *zName);
/*
** CAPI3REF: Reset All Bindings On A Prepared Statement
** the [sqlite3_bind_blob | bindings] on a [prepared statement].
** ^Use this routine to reset all host parameters to NULL.
*/
-SQLITE_API int sqlite3_clear_bindings(sqlite3_stmt*);
+SQLITE_API int SQLITE_STDCALL sqlite3_clear_bindings(sqlite3_stmt*);
/*
** CAPI3REF: Number Of Columns In A Result Set
**
** See also: [sqlite3_data_count()]
*/
-SQLITE_API int sqlite3_column_count(sqlite3_stmt *pStmt);
+SQLITE_API int SQLITE_STDCALL sqlite3_column_count(sqlite3_stmt *pStmt);
/*
** CAPI3REF: Column Names In A Result Set
** then the name of the column is unspecified and may change from
** one release of SQLite to the next.
*/
-SQLITE_API const char *sqlite3_column_name(sqlite3_stmt*, int N);
-SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt*, int N);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_column_name(sqlite3_stmt*, int N);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_name16(sqlite3_stmt*, int N);
/*
** CAPI3REF: Source Of Data In A Query Result
** for the same [prepared statement] and result column
** at the same time then the results are undefined.
*/
-SQLITE_API const char *sqlite3_column_database_name(sqlite3_stmt*,int);
-SQLITE_API const void *sqlite3_column_database_name16(sqlite3_stmt*,int);
-SQLITE_API const char *sqlite3_column_table_name(sqlite3_stmt*,int);
-SQLITE_API const void *sqlite3_column_table_name16(sqlite3_stmt*,int);
-SQLITE_API const char *sqlite3_column_origin_name(sqlite3_stmt*,int);
-SQLITE_API const void *sqlite3_column_origin_name16(sqlite3_stmt*,int);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_column_database_name(sqlite3_stmt*,int);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_database_name16(sqlite3_stmt*,int);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_column_table_name(sqlite3_stmt*,int);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_table_name16(sqlite3_stmt*,int);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_column_origin_name(sqlite3_stmt*,int);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_origin_name16(sqlite3_stmt*,int);
/*
** CAPI3REF: Declared Datatype Of A Query Result
** is associated with individual values, not with the containers
** used to hold those values.
*/
-SQLITE_API const char *sqlite3_column_decltype(sqlite3_stmt*,int);
-SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt*,int);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_column_decltype(sqlite3_stmt*,int);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_decltype16(sqlite3_stmt*,int);
/*
** CAPI3REF: Evaluate An SQL Statement
** then the more specific [error codes] are returned directly
** by sqlite3_step(). The use of the "v2" interface is recommended.
*/
-SQLITE_API int sqlite3_step(sqlite3_stmt*);
+SQLITE_API int SQLITE_STDCALL sqlite3_step(sqlite3_stmt*);
/*
** CAPI3REF: Number of columns in a result set
**
** See also: [sqlite3_column_count()]
*/
-SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt);
+SQLITE_API int SQLITE_STDCALL sqlite3_data_count(sqlite3_stmt *pStmt);
/*
** CAPI3REF: Fundamental Datatypes
** pointer. Subsequent calls to [sqlite3_errcode()] will return
** [SQLITE_NOMEM].)^
*/
-SQLITE_API const void *sqlite3_column_blob(sqlite3_stmt*, int iCol);
-SQLITE_API int sqlite3_column_bytes(sqlite3_stmt*, int iCol);
-SQLITE_API int sqlite3_column_bytes16(sqlite3_stmt*, int iCol);
-SQLITE_API double sqlite3_column_double(sqlite3_stmt*, int iCol);
-SQLITE_API int sqlite3_column_int(sqlite3_stmt*, int iCol);
-SQLITE_API sqlite3_int64 sqlite3_column_int64(sqlite3_stmt*, int iCol);
-SQLITE_API const unsigned char *sqlite3_column_text(sqlite3_stmt*, int iCol);
-SQLITE_API const void *sqlite3_column_text16(sqlite3_stmt*, int iCol);
-SQLITE_API int sqlite3_column_type(sqlite3_stmt*, int iCol);
-SQLITE_API sqlite3_value *sqlite3_column_value(sqlite3_stmt*, int iCol);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_blob(sqlite3_stmt*, int iCol);
+SQLITE_API int SQLITE_STDCALL sqlite3_column_bytes(sqlite3_stmt*, int iCol);
+SQLITE_API int SQLITE_STDCALL sqlite3_column_bytes16(sqlite3_stmt*, int iCol);
+SQLITE_API double SQLITE_STDCALL sqlite3_column_double(sqlite3_stmt*, int iCol);
+SQLITE_API int SQLITE_STDCALL sqlite3_column_int(sqlite3_stmt*, int iCol);
+SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_column_int64(sqlite3_stmt*, int iCol);
+SQLITE_API const unsigned char *SQLITE_STDCALL sqlite3_column_text(sqlite3_stmt*, int iCol);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_text16(sqlite3_stmt*, int iCol);
+SQLITE_API int SQLITE_STDCALL sqlite3_column_type(sqlite3_stmt*, int iCol);
+SQLITE_API sqlite3_value *SQLITE_STDCALL sqlite3_column_value(sqlite3_stmt*, int iCol);
/*
** CAPI3REF: Destroy A Prepared Statement Object
** statement after it has been finalized can result in undefined and
** undesirable behavior such as segfaults and heap corruption.
*/
-SQLITE_API int sqlite3_finalize(sqlite3_stmt *pStmt);
+SQLITE_API int SQLITE_STDCALL sqlite3_finalize(sqlite3_stmt *pStmt);
/*
** CAPI3REF: Reset A Prepared Statement Object
** ^The [sqlite3_reset(S)] interface does not change the values
** of any [sqlite3_bind_blob|bindings] on the [prepared statement] S.
*/
-SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt);
+SQLITE_API int SQLITE_STDCALL sqlite3_reset(sqlite3_stmt *pStmt);
/*
** CAPI3REF: Create Or Redefine SQL Functions
** close the database connection nor finalize or reset the prepared
** statement in which the function is running.
*/
-SQLITE_API int sqlite3_create_function(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_function(
sqlite3 *db,
const char *zFunctionName,
int nArg,
void (*xStep)(sqlite3_context*,int,sqlite3_value**),
void (*xFinal)(sqlite3_context*)
);
-SQLITE_API int sqlite3_create_function16(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_function16(
sqlite3 *db,
const void *zFunctionName,
int nArg,
void (*xStep)(sqlite3_context*,int,sqlite3_value**),
void (*xFinal)(sqlite3_context*)
);
-SQLITE_API int sqlite3_create_function_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_function_v2(
sqlite3 *db,
const char *zFunctionName,
int nArg,
** These constant define integer codes that represent the various
** text encodings supported by SQLite.
*/
-#define SQLITE_UTF8 1
-#define SQLITE_UTF16LE 2
-#define SQLITE_UTF16BE 3
+#define SQLITE_UTF8 1 /* IMP: R-37514-35566 */
+#define SQLITE_UTF16LE 2 /* IMP: R-03371-37637 */
+#define SQLITE_UTF16BE 3 /* IMP: R-51971-34154 */
#define SQLITE_UTF16 4 /* Use native byte order */
#define SQLITE_ANY 5 /* Deprecated */
#define SQLITE_UTF16_ALIGNED 8 /* sqlite3_create_collation only */
** These functions are [deprecated]. In order to maintain
** backwards compatibility with older code, these functions continue
** to be supported. However, new applications should avoid
-** the use of these functions. To help encourage people to avoid
-** using these functions, we are not going to tell you what they do.
+** the use of these functions. To encourage programmers to avoid
+** these functions, we will not explain what they do.
*/
#ifndef SQLITE_OMIT_DEPRECATED
-SQLITE_API SQLITE_DEPRECATED int sqlite3_aggregate_count(sqlite3_context*);
-SQLITE_API SQLITE_DEPRECATED int sqlite3_expired(sqlite3_stmt*);
-SQLITE_API SQLITE_DEPRECATED int sqlite3_transfer_bindings(sqlite3_stmt*, sqlite3_stmt*);
-SQLITE_API SQLITE_DEPRECATED int sqlite3_global_recover(void);
-SQLITE_API SQLITE_DEPRECATED void sqlite3_thread_cleanup(void);
-SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int64,int),
+SQLITE_API SQLITE_DEPRECATED int SQLITE_STDCALL sqlite3_aggregate_count(sqlite3_context*);
+SQLITE_API SQLITE_DEPRECATED int SQLITE_STDCALL sqlite3_expired(sqlite3_stmt*);
+SQLITE_API SQLITE_DEPRECATED int SQLITE_STDCALL sqlite3_transfer_bindings(sqlite3_stmt*, sqlite3_stmt*);
+SQLITE_API SQLITE_DEPRECATED int SQLITE_STDCALL sqlite3_global_recover(void);
+SQLITE_API SQLITE_DEPRECATED void SQLITE_STDCALL sqlite3_thread_cleanup(void);
+SQLITE_API SQLITE_DEPRECATED int SQLITE_STDCALL sqlite3_memory_alarm(void(*)(void*,sqlite3_int64,int),
void*,sqlite3_int64);
#endif
** These routines must be called from the same thread as
** the SQL function that supplied the [sqlite3_value*] parameters.
*/
-SQLITE_API const void *sqlite3_value_blob(sqlite3_value*);
-SQLITE_API int sqlite3_value_bytes(sqlite3_value*);
-SQLITE_API int sqlite3_value_bytes16(sqlite3_value*);
-SQLITE_API double sqlite3_value_double(sqlite3_value*);
-SQLITE_API int sqlite3_value_int(sqlite3_value*);
-SQLITE_API sqlite3_int64 sqlite3_value_int64(sqlite3_value*);
-SQLITE_API const unsigned char *sqlite3_value_text(sqlite3_value*);
-SQLITE_API const void *sqlite3_value_text16(sqlite3_value*);
-SQLITE_API const void *sqlite3_value_text16le(sqlite3_value*);
-SQLITE_API const void *sqlite3_value_text16be(sqlite3_value*);
-SQLITE_API int sqlite3_value_type(sqlite3_value*);
-SQLITE_API int sqlite3_value_numeric_type(sqlite3_value*);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_value_blob(sqlite3_value*);
+SQLITE_API int SQLITE_STDCALL sqlite3_value_bytes(sqlite3_value*);
+SQLITE_API int SQLITE_STDCALL sqlite3_value_bytes16(sqlite3_value*);
+SQLITE_API double SQLITE_STDCALL sqlite3_value_double(sqlite3_value*);
+SQLITE_API int SQLITE_STDCALL sqlite3_value_int(sqlite3_value*);
+SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_value_int64(sqlite3_value*);
+SQLITE_API const unsigned char *SQLITE_STDCALL sqlite3_value_text(sqlite3_value*);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_value_text16(sqlite3_value*);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_value_text16le(sqlite3_value*);
+SQLITE_API const void *SQLITE_STDCALL sqlite3_value_text16be(sqlite3_value*);
+SQLITE_API int SQLITE_STDCALL sqlite3_value_type(sqlite3_value*);
+SQLITE_API int SQLITE_STDCALL sqlite3_value_numeric_type(sqlite3_value*);
/*
** CAPI3REF: Obtain Aggregate Function Context
** This routine must be called from the same thread in which
** the aggregate SQL function is running.
*/
-SQLITE_API void *sqlite3_aggregate_context(sqlite3_context*, int nBytes);
+SQLITE_API void *SQLITE_STDCALL sqlite3_aggregate_context(sqlite3_context*, int nBytes);
/*
** CAPI3REF: User Data For Functions
** This routine must be called from the same thread in which
** the application-defined function is running.
*/
-SQLITE_API void *sqlite3_user_data(sqlite3_context*);
+SQLITE_API void *SQLITE_STDCALL sqlite3_user_data(sqlite3_context*);
/*
** CAPI3REF: Database Connection For Functions
** and [sqlite3_create_function16()] routines that originally
** registered the application defined function.
*/
-SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*);
+SQLITE_API sqlite3 *SQLITE_STDCALL sqlite3_context_db_handle(sqlite3_context*);
/*
** CAPI3REF: Function Auxiliary Data
** These routines must be called from the same thread in which
** the SQL function is running.
*/
-SQLITE_API void *sqlite3_get_auxdata(sqlite3_context*, int N);
-SQLITE_API void sqlite3_set_auxdata(sqlite3_context*, int N, void*, void (*)(void*));
+SQLITE_API void *SQLITE_STDCALL sqlite3_get_auxdata(sqlite3_context*, int N);
+SQLITE_API void SQLITE_STDCALL sqlite3_set_auxdata(sqlite3_context*, int N, void*, void (*)(void*));
/*
** than the one containing the application-defined function that received
** the [sqlite3_context] pointer, the results are undefined.
*/
-SQLITE_API void sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*));
-SQLITE_API void sqlite3_result_blob64(sqlite3_context*,const void*,sqlite3_uint64,void(*)(void*));
-SQLITE_API void sqlite3_result_double(sqlite3_context*, double);
-SQLITE_API void sqlite3_result_error(sqlite3_context*, const char*, int);
-SQLITE_API void sqlite3_result_error16(sqlite3_context*, const void*, int);
-SQLITE_API void sqlite3_result_error_toobig(sqlite3_context*);
-SQLITE_API void sqlite3_result_error_nomem(sqlite3_context*);
-SQLITE_API void sqlite3_result_error_code(sqlite3_context*, int);
-SQLITE_API void sqlite3_result_int(sqlite3_context*, int);
-SQLITE_API void sqlite3_result_int64(sqlite3_context*, sqlite3_int64);
-SQLITE_API void sqlite3_result_null(sqlite3_context*);
-SQLITE_API void sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*));
-SQLITE_API void sqlite3_result_text64(sqlite3_context*, const char*,sqlite3_uint64,
+SQLITE_API void SQLITE_STDCALL sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*));
+SQLITE_API void SQLITE_STDCALL sqlite3_result_blob64(sqlite3_context*,const void*,
+ sqlite3_uint64,void(*)(void*));
+SQLITE_API void SQLITE_STDCALL sqlite3_result_double(sqlite3_context*, double);
+SQLITE_API void SQLITE_STDCALL sqlite3_result_error(sqlite3_context*, const char*, int);
+SQLITE_API void SQLITE_STDCALL sqlite3_result_error16(sqlite3_context*, const void*, int);
+SQLITE_API void SQLITE_STDCALL sqlite3_result_error_toobig(sqlite3_context*);
+SQLITE_API void SQLITE_STDCALL sqlite3_result_error_nomem(sqlite3_context*);
+SQLITE_API void SQLITE_STDCALL sqlite3_result_error_code(sqlite3_context*, int);
+SQLITE_API void SQLITE_STDCALL sqlite3_result_int(sqlite3_context*, int);
+SQLITE_API void SQLITE_STDCALL sqlite3_result_int64(sqlite3_context*, sqlite3_int64);
+SQLITE_API void SQLITE_STDCALL sqlite3_result_null(sqlite3_context*);
+SQLITE_API void SQLITE_STDCALL sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*));
+SQLITE_API void SQLITE_STDCALL sqlite3_result_text64(sqlite3_context*, const char*,sqlite3_uint64,
void(*)(void*), unsigned char encoding);
-SQLITE_API void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*));
-SQLITE_API void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*));
-SQLITE_API void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*));
-SQLITE_API void sqlite3_result_value(sqlite3_context*, sqlite3_value*);
-SQLITE_API void sqlite3_result_zeroblob(sqlite3_context*, int n);
+SQLITE_API void SQLITE_STDCALL sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*));
+SQLITE_API void SQLITE_STDCALL sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*));
+SQLITE_API void SQLITE_STDCALL sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*));
+SQLITE_API void SQLITE_STDCALL sqlite3_result_value(sqlite3_context*, sqlite3_value*);
+SQLITE_API void SQLITE_STDCALL sqlite3_result_zeroblob(sqlite3_context*, int n);
/*
** CAPI3REF: Define New Collating Sequences
**
** See also: [sqlite3_collation_needed()] and [sqlite3_collation_needed16()].
*/
-SQLITE_API int sqlite3_create_collation(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_collation(
sqlite3*,
const char *zName,
int eTextRep,
void *pArg,
int(*xCompare)(void*,int,const void*,int,const void*)
);
-SQLITE_API int sqlite3_create_collation_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_collation_v2(
sqlite3*,
const char *zName,
int eTextRep,
int(*xCompare)(void*,int,const void*,int,const void*),
void(*xDestroy)(void*)
);
-SQLITE_API int sqlite3_create_collation16(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_collation16(
sqlite3*,
const void *zName,
int eTextRep,
** [sqlite3_create_collation()], [sqlite3_create_collation16()], or
** [sqlite3_create_collation_v2()].
*/
-SQLITE_API int sqlite3_collation_needed(
+SQLITE_API int SQLITE_STDCALL sqlite3_collation_needed(
sqlite3*,
void*,
void(*)(void*,sqlite3*,int eTextRep,const char*)
);
-SQLITE_API int sqlite3_collation_needed16(
+SQLITE_API int SQLITE_STDCALL sqlite3_collation_needed16(
sqlite3*,
void*,
void(*)(void*,sqlite3*,int eTextRep,const void*)
** The code to implement this API is not available in the public release
** of SQLite.
*/
-SQLITE_API int sqlite3_key(
+SQLITE_API int SQLITE_STDCALL sqlite3_key(
sqlite3 *db, /* Database to be rekeyed */
const void *pKey, int nKey /* The key */
);
-SQLITE_API int sqlite3_key_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_key_v2(
sqlite3 *db, /* Database to be rekeyed */
const char *zDbName, /* Name of the database */
const void *pKey, int nKey /* The key */
** The code to implement this API is not available in the public release
** of SQLite.
*/
-SQLITE_API int sqlite3_rekey(
+SQLITE_API int SQLITE_STDCALL sqlite3_rekey(
sqlite3 *db, /* Database to be rekeyed */
const void *pKey, int nKey /* The new key */
);
-SQLITE_API int sqlite3_rekey_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_rekey_v2(
sqlite3 *db, /* Database to be rekeyed */
const char *zDbName, /* Name of the database */
const void *pKey, int nKey /* The new key */
** Specify the activation key for a SEE database. Unless
** activated, none of the SEE routines will work.
*/
-SQLITE_API void sqlite3_activate_see(
+SQLITE_API void SQLITE_STDCALL sqlite3_activate_see(
const char *zPassPhrase /* Activation phrase */
);
#endif
** Specify the activation key for a CEROD database. Unless
** activated, none of the CEROD routines will work.
*/
-SQLITE_API void sqlite3_activate_cerod(
+SQLITE_API void SQLITE_STDCALL sqlite3_activate_cerod(
const char *zPassPhrase /* Activation phrase */
);
#endif
** all, then the behavior of sqlite3_sleep() may deviate from the description
** in the previous paragraphs.
*/
-SQLITE_API int sqlite3_sleep(int);
+SQLITE_API int SQLITE_STDCALL sqlite3_sleep(int);
/*
** CAPI3REF: Name Of The Folder Holding Temporary Files
** connection while this routine is running, then the return value
** is undefined.
*/
-SQLITE_API int sqlite3_get_autocommit(sqlite3*);
+SQLITE_API int SQLITE_STDCALL sqlite3_get_autocommit(sqlite3*);
/*
** CAPI3REF: Find The Database Handle Of A Prepared Statement
** to the [sqlite3_prepare_v2()] call (or its variants) that was used to
** create the statement in the first place.
*/
-SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*);
+SQLITE_API sqlite3 *SQLITE_STDCALL sqlite3_db_handle(sqlite3_stmt*);
/*
** CAPI3REF: Return The Filename For A Database Connection
** will be an absolute pathname, even if the filename used
** to open the database originally was a URI or relative pathname.
*/
-SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_db_filename(sqlite3 *db, const char *zDbName);
/*
** CAPI3REF: Determine if a database is read-only
** of connection D is read-only, 0 if it is read/write, or -1 if N is not
** the name of a database on connection D.
*/
-SQLITE_API int sqlite3_db_readonly(sqlite3 *db, const char *zDbName);
+SQLITE_API int SQLITE_STDCALL sqlite3_db_readonly(sqlite3 *db, const char *zDbName);
/*
** CAPI3REF: Find the next prepared statement
** [sqlite3_next_stmt(D,S)] must refer to an open database
** connection and in particular must not be a NULL pointer.
*/
-SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt);
+SQLITE_API sqlite3_stmt *SQLITE_STDCALL sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt);
/*
** CAPI3REF: Commit And Rollback Notification Callbacks
**
** See also the [sqlite3_update_hook()] interface.
*/
-SQLITE_API void *sqlite3_commit_hook(sqlite3*, int(*)(void*), void*);
-SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*);
+SQLITE_API void *SQLITE_STDCALL sqlite3_commit_hook(sqlite3*, int(*)(void*), void*);
+SQLITE_API void *SQLITE_STDCALL sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*);
/*
** CAPI3REF: Data Change Notification Callbacks
** See also the [sqlite3_commit_hook()] and [sqlite3_rollback_hook()]
** interfaces.
*/
-SQLITE_API void *sqlite3_update_hook(
+SQLITE_API void *SQLITE_STDCALL sqlite3_update_hook(
sqlite3*,
void(*)(void *,int ,char const *,char const *,sqlite3_int64),
void*
** future releases of SQLite. Applications that care about shared
** cache setting should set it explicitly.
**
+** Note: This method is disabled on MacOS X 10.7 and iOS version 5.0
+** and will always return SQLITE_MISUSE. On those systems,
+** shared cache mode should be enabled per-database connection via
+** [sqlite3_open_v2()] with [SQLITE_OPEN_SHAREDCACHE].
+**
** This interface is threadsafe on processors where writing a
** 32-bit integer is atomic.
**
** See Also: [SQLite Shared-Cache Mode]
*/
-SQLITE_API int sqlite3_enable_shared_cache(int);
+SQLITE_API int SQLITE_STDCALL sqlite3_enable_shared_cache(int);
/*
** CAPI3REF: Attempt To Free Heap Memory
**
** See also: [sqlite3_db_release_memory()]
*/
-SQLITE_API int sqlite3_release_memory(int);
+SQLITE_API int SQLITE_STDCALL sqlite3_release_memory(int);
/*
** CAPI3REF: Free Memory Used By A Database Connection
**
** See also: [sqlite3_release_memory()]
*/
-SQLITE_API int sqlite3_db_release_memory(sqlite3*);
+SQLITE_API int SQLITE_STDCALL sqlite3_db_release_memory(sqlite3*);
/*
** CAPI3REF: Impose A Limit On Heap Size
** The circumstances under which SQLite will enforce the soft heap limit may
** changes in future releases of SQLite.
*/
-SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 N);
+SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_soft_heap_limit64(sqlite3_int64 N);
/*
** CAPI3REF: Deprecated Soft Heap Limit Interface
** only. All new applications should use the
** [sqlite3_soft_heap_limit64()] interface rather than this one.
*/
-SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N);
+SQLITE_API SQLITE_DEPRECATED void SQLITE_STDCALL sqlite3_soft_heap_limit(int N);
/*
** CAPI3REF: Extract Metadata About A Column Of A Table
**
-** ^This routine returns metadata about a specific column of a specific
-** database table accessible using the [database connection] handle
-** passed as the first function argument.
+** ^(The sqlite3_table_column_metadata(X,D,T,C,....) routine returns
+** information about column C of table T in database D
+** on [database connection] X.)^ ^The sqlite3_table_column_metadata()
+** interface returns SQLITE_OK and fills in the non-NULL pointers in
+** the final five arguments with appropriate values if the specified
+** column exists. ^The sqlite3_table_column_metadata() interface returns
+** SQLITE_ERROR and if the specified column does not exist.
+** ^If the column-name parameter to sqlite3_table_column_metadata() is a
+** NULL pointer, then this routine simply checks for the existance of the
+** table and returns SQLITE_OK if the table exists and SQLITE_ERROR if it
+** does not.
**
** ^The column is identified by the second, third and fourth parameters to
-** this function. ^The second parameter is either the name of the database
+** this function. ^(The second parameter is either the name of the database
** (i.e. "main", "temp", or an attached database) containing the specified
-** table or NULL. ^If it is NULL, then all attached databases are searched
+** table or NULL.)^ ^If it is NULL, then all attached databases are searched
** for the table using the same algorithm used by the database engine to
** resolve unqualified table references.
**
** ^The third and fourth parameters to this function are the table and column
-** name of the desired column, respectively. Neither of these parameters
-** may be NULL.
+** name of the desired column, respectively.
**
** ^Metadata is returned by writing to the memory locations passed as the 5th
** and subsequent parameters to this function. ^Any of these arguments may be
** </blockquote>)^
**
** ^The memory pointed to by the character pointers returned for the
-** declaration type and collation sequence is valid only until the next
+** declaration type and collation sequence is valid until the next
** call to any SQLite API function.
**
** ^If the specified table is actually a view, an [error code] is returned.
**
-** ^If the specified column is "rowid", "oid" or "_rowid_" and an
+** ^If the specified column is "rowid", "oid" or "_rowid_" and the table
+** is not a [WITHOUT ROWID] table and an
** [INTEGER PRIMARY KEY] column has been explicitly declared, then the output
** parameters are set for the explicitly declared column. ^(If there is no
-** explicitly declared [INTEGER PRIMARY KEY] column, then the output
-** parameters are set as follows:
+** [INTEGER PRIMARY KEY] column, then the outputs
+** for the [rowid] are set as follows:
**
** <pre>
** data type: "INTEGER"
** auto increment: 0
** </pre>)^
**
-** ^(This function may load one or more schemas from database files. If an
-** error occurs during this process, or if the requested table or column
-** cannot be found, an [error code] is returned and an error message left
-** in the [database connection] (to be retrieved using sqlite3_errmsg()).)^
-**
-** ^This API is only available if the library was compiled with the
-** [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol defined.
+** ^This function causes all database schemas to be read from disk and
+** parsed, if that has not already been done, and returns an error if
+** any errors are encountered while loading the schema.
*/
-SQLITE_API int sqlite3_table_column_metadata(
+SQLITE_API int SQLITE_STDCALL sqlite3_table_column_metadata(
sqlite3 *db, /* Connection handle */
const char *zDbName, /* Database name or NULL */
const char *zTableName, /* Table name */
**
** See also the [load_extension() SQL function].
*/
-SQLITE_API int sqlite3_load_extension(
+SQLITE_API int SQLITE_STDCALL sqlite3_load_extension(
sqlite3 *db, /* Load the extension into this database connection */
const char *zFile, /* Name of the shared library containing extension */
const char *zProc, /* Entry point. Derived from zFile if 0 */
** to turn extension loading on and call it with onoff==0 to turn
** it back off again.
*/
-SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff);
+SQLITE_API int SQLITE_STDCALL sqlite3_enable_load_extension(sqlite3 *db, int onoff);
/*
** CAPI3REF: Automatically Load Statically Linked Extensions
** See also: [sqlite3_reset_auto_extension()]
** and [sqlite3_cancel_auto_extension()]
*/
-SQLITE_API int sqlite3_auto_extension(void (*xEntryPoint)(void));
+SQLITE_API int SQLITE_STDCALL sqlite3_auto_extension(void (*xEntryPoint)(void));
/*
** CAPI3REF: Cancel Automatic Extension Loading
** unregistered and it returns 0 if X was not on the list of initialization
** routines.
*/
-SQLITE_API int sqlite3_cancel_auto_extension(void (*xEntryPoint)(void));
+SQLITE_API int SQLITE_STDCALL sqlite3_cancel_auto_extension(void (*xEntryPoint)(void));
/*
** CAPI3REF: Reset Automatic Extension Loading
** ^This interface disables all automatic extensions previously
** registered using [sqlite3_auto_extension()].
*/
-SQLITE_API void sqlite3_reset_auto_extension(void);
+SQLITE_API void SQLITE_STDCALL sqlite3_reset_auto_extension(void);
/*
** The interface to the virtual-table mechanism is currently considered
** interface is equivalent to sqlite3_create_module_v2() with a NULL
** destructor.
*/
-SQLITE_API int sqlite3_create_module(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_module(
sqlite3 *db, /* SQLite connection to register module with */
const char *zName, /* Name of the module */
const sqlite3_module *p, /* Methods for the module */
void *pClientData /* Client data for xCreate/xConnect */
);
-SQLITE_API int sqlite3_create_module_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_module_v2(
sqlite3 *db, /* SQLite connection to register module with */
const char *zName, /* Name of the module */
const sqlite3_module *p, /* Methods for the module */
*/
struct sqlite3_vtab {
const sqlite3_module *pModule; /* The module for this virtual table */
- int nRef; /* NO LONGER USED */
+ int nRef; /* Number of open cursors */
char *zErrMsg; /* Error message from sqlite3_mprintf() */
/* Virtual table implementations will typically add additional fields */
};
** to declare the format (the names and datatypes of the columns) of
** the virtual tables they implement.
*/
-SQLITE_API int sqlite3_declare_vtab(sqlite3*, const char *zSQL);
+SQLITE_API int SQLITE_STDCALL sqlite3_declare_vtab(sqlite3*, const char *zSQL);
/*
** CAPI3REF: Overload A Function For A Virtual Table
** purpose is to be a placeholder function that can be overloaded
** by a [virtual table].
*/
-SQLITE_API int sqlite3_overload_function(sqlite3*, const char *zFuncName, int nArg);
+SQLITE_API int SQLITE_STDCALL sqlite3_overload_function(sqlite3*, const char *zFuncName, int nArg);
/*
** The interface to the virtual-table mechanism defined above (back up
** SELECT zColumn FROM zDb.zTable WHERE [rowid] = iRow;
** </pre>)^
**
+** ^(Parameter zDb is not the filename that contains the database, but
+** rather the symbolic name of the database. For attached databases, this is
+** the name that appears after the AS keyword in the [ATTACH] statement.
+** For the main database file, the database name is "main". For TEMP
+** tables, the database name is "temp".)^
+**
** ^If the flags parameter is non-zero, then the BLOB is opened for read
-** and write access. ^If it is zero, the BLOB is opened for read access.
-** ^It is not possible to open a column that is part of an index or primary
-** key for writing. ^If [foreign key constraints] are enabled, it is
-** not possible to open a column that is part of a [child key] for writing.
-**
-** ^Note that the database name is not the filename that contains
-** the database but rather the symbolic name of the database that
-** appears after the AS keyword when the database is connected using [ATTACH].
-** ^For the main database file, the database name is "main".
-** ^For TEMP tables, the database name is "temp".
-**
-** ^(On success, [SQLITE_OK] is returned and the new [BLOB handle] is written
-** to *ppBlob. Otherwise an [error code] is returned and *ppBlob is set
-** to be a null pointer.)^
-** ^This function sets the [database connection] error code and message
-** accessible via [sqlite3_errcode()] and [sqlite3_errmsg()] and related
-** functions. ^Note that the *ppBlob variable is always initialized in a
-** way that makes it safe to invoke [sqlite3_blob_close()] on *ppBlob
-** regardless of the success or failure of this routine.
+** and write access. ^If the flags parameter is zero, the BLOB is opened for
+** read-only access.
+**
+** ^(On success, [SQLITE_OK] is returned and the new [BLOB handle] is stored
+** in *ppBlob. Otherwise an [error code] is returned and, unless the error
+** code is SQLITE_MISUSE, *ppBlob is set to NULL.)^ ^This means that, provided
+** the API is not misused, it is always safe to call [sqlite3_blob_close()]
+** on *ppBlob after this function it returns.
+**
+** This function fails with SQLITE_ERROR if any of the following are true:
+** <ul>
+** <li> ^(Database zDb does not exist)^,
+** <li> ^(Table zTable does not exist within database zDb)^,
+** <li> ^(Table zTable is a WITHOUT ROWID table)^,
+** <li> ^(Column zColumn does not exist)^,
+** <li> ^(Row iRow is not present in the table)^,
+** <li> ^(The specified column of row iRow contains a value that is not
+** a TEXT or BLOB value)^,
+** <li> ^(Column zColumn is part of an index, PRIMARY KEY or UNIQUE
+** constraint and the blob is being opened for read/write access)^,
+** <li> ^([foreign key constraints | Foreign key constraints] are enabled,
+** column zColumn is part of a [child key] definition and the blob is
+** being opened for read/write access)^.
+** </ul>
+**
+** ^Unless it returns SQLITE_MISUSE, this function sets the
+** [database connection] error code and message accessible via
+** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions.
+**
**
** ^(If the row that a BLOB handle points to is modified by an
** [UPDATE], [DELETE], or by [ON CONFLICT] side-effects
** interface. Use the [UPDATE] SQL command to change the size of a
** blob.
**
-** ^The [sqlite3_blob_open()] interface will fail for a [WITHOUT ROWID]
-** table. Incremental BLOB I/O is not possible on [WITHOUT ROWID] tables.
-**
** ^The [sqlite3_bind_zeroblob()] and [sqlite3_result_zeroblob()] interfaces
-** and the built-in [zeroblob] SQL function can be used, if desired,
-** to create an empty, zero-filled blob in which to read or write using
-** this interface.
+** and the built-in [zeroblob] SQL function may be used to create a
+** zero-filled blob to read or write using the incremental-blob interface.
**
** To avoid a resource leak, every open [BLOB handle] should eventually
** be released by a call to [sqlite3_blob_close()].
*/
-SQLITE_API int sqlite3_blob_open(
+SQLITE_API int SQLITE_STDCALL sqlite3_blob_open(
sqlite3*,
const char *zDb,
const char *zTable,
**
** ^This function sets the database handle error code and message.
*/
-SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64);
+SQLITE_API SQLITE_EXPERIMENTAL int SQLITE_STDCALL sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64);
/*
** CAPI3REF: Close A BLOB Handle
**
-** ^Closes an open [BLOB handle].
-**
-** ^Closing a BLOB shall cause the current transaction to commit
-** if there are no other BLOBs, no pending prepared statements, and the
-** database connection is in [autocommit mode].
-** ^If any writes were made to the BLOB, they might be held in cache
-** until the close operation if they will fit.
-**
-** ^(Closing the BLOB often forces the changes
-** out to disk and so if any I/O errors occur, they will likely occur
-** at the time when the BLOB is closed. Any errors that occur during
-** closing are reported as a non-zero return value.)^
+** ^This function closes an open [BLOB handle]. ^(The BLOB handle is closed
+** unconditionally. Even if this routine returns an error code, the
+** handle is still closed.)^
**
-** ^(The BLOB is closed unconditionally. Even if this routine returns
-** an error code, the BLOB is still closed.)^
+** ^If the blob handle being closed was opened for read-write access, and if
+** the database is in auto-commit mode and there are no other open read-write
+** blob handles or active write statements, the current transaction is
+** committed. ^If an error occurs while committing the transaction, an error
+** code is returned and the transaction rolled back.
**
-** ^Calling this routine with a null pointer (such as would be returned
-** by a failed call to [sqlite3_blob_open()]) is a harmless no-op.
+** Calling this function with an argument that is not a NULL pointer or an
+** open blob handle results in undefined behaviour. ^Calling this routine
+** with a null pointer (such as would be returned by a failed call to
+** [sqlite3_blob_open()]) is a harmless no-op. ^Otherwise, if this function
+** is passed a valid open blob handle, the values returned by the
+** sqlite3_errcode() and sqlite3_errmsg() functions are set before returning.
*/
-SQLITE_API int sqlite3_blob_close(sqlite3_blob *);
+SQLITE_API int SQLITE_STDCALL sqlite3_blob_close(sqlite3_blob *);
/*
** CAPI3REF: Return The Size Of An Open BLOB
** been closed by [sqlite3_blob_close()]. Passing any other pointer in
** to this routine results in undefined and probably undesirable behavior.
*/
-SQLITE_API int sqlite3_blob_bytes(sqlite3_blob *);
+SQLITE_API int SQLITE_STDCALL sqlite3_blob_bytes(sqlite3_blob *);
/*
** CAPI3REF: Read Data From A BLOB Incrementally
**
** See also: [sqlite3_blob_write()].
*/
-SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset);
+SQLITE_API int SQLITE_STDCALL sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset);
/*
** CAPI3REF: Write Data Into A BLOB Incrementally
**
-** ^This function is used to write data into an open [BLOB handle] from a
-** caller-supplied buffer. ^N bytes of data are copied from the buffer Z
-** into the open BLOB, starting at offset iOffset.
+** ^(This function is used to write data into an open [BLOB handle] from a
+** caller-supplied buffer. N bytes of data are copied from the buffer Z
+** into the open BLOB, starting at offset iOffset.)^
+**
+** ^(On success, sqlite3_blob_write() returns SQLITE_OK.
+** Otherwise, an [error code] or an [extended error code] is returned.)^
+** ^Unless SQLITE_MISUSE is returned, this function sets the
+** [database connection] error code and message accessible via
+** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions.
**
** ^If the [BLOB handle] passed as the first argument was not opened for
** writing (the flags parameter to [sqlite3_blob_open()] was zero),
** this function returns [SQLITE_READONLY].
**
-** ^This function may only modify the contents of the BLOB; it is
+** This function may only modify the contents of the BLOB; it is
** not possible to increase the size of a BLOB using this API.
** ^If offset iOffset is less than N bytes from the end of the BLOB,
-** [SQLITE_ERROR] is returned and no data is written. ^If N is
-** less than zero [SQLITE_ERROR] is returned and no data is written.
-** The size of the BLOB (and hence the maximum value of N+iOffset)
-** can be determined using the [sqlite3_blob_bytes()] interface.
+** [SQLITE_ERROR] is returned and no data is written. The size of the
+** BLOB (and hence the maximum value of N+iOffset) can be determined
+** using the [sqlite3_blob_bytes()] interface. ^If N or iOffset are less
+** than zero [SQLITE_ERROR] is returned and no data is written.
**
** ^An attempt to write to an expired [BLOB handle] fails with an
** error code of [SQLITE_ABORT]. ^Writes to the BLOB that occurred
** have been overwritten by the statement that expired the BLOB handle
** or by other independent statements.
**
-** ^(On success, sqlite3_blob_write() returns SQLITE_OK.
-** Otherwise, an [error code] or an [extended error code] is returned.)^
-**
** This routine only works on a [BLOB handle] which has been created
** by a prior successful call to [sqlite3_blob_open()] and which has not
** been closed by [sqlite3_blob_close()]. Passing any other pointer in
**
** See also: [sqlite3_blob_read()].
*/
-SQLITE_API int sqlite3_blob_write(sqlite3_blob *, const void *z, int n, int iOffset);
+SQLITE_API int SQLITE_STDCALL sqlite3_blob_write(sqlite3_blob *, const void *z, int n, int iOffset);
/*
** CAPI3REF: Virtual File System Objects
** ^(If the default VFS is unregistered, another VFS is chosen as
** the default. The choice for the new VFS is arbitrary.)^
*/
-SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfsName);
-SQLITE_API int sqlite3_vfs_register(sqlite3_vfs*, int makeDflt);
-SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*);
+SQLITE_API sqlite3_vfs *SQLITE_STDCALL sqlite3_vfs_find(const char *zVfsName);
+SQLITE_API int SQLITE_STDCALL sqlite3_vfs_register(sqlite3_vfs*, int makeDflt);
+SQLITE_API int SQLITE_STDCALL sqlite3_vfs_unregister(sqlite3_vfs*);
/*
** CAPI3REF: Mutexes
**
** The SQLite source code contains multiple implementations
** of these mutex routines. An appropriate implementation
-** is selected automatically at compile-time. ^(The following
+** is selected automatically at compile-time. The following
** implementations are available in the SQLite core:
**
** <ul>
** <li> SQLITE_MUTEX_PTHREADS
** <li> SQLITE_MUTEX_W32
** <li> SQLITE_MUTEX_NOOP
-** </ul>)^
+** </ul>
**
-** ^The SQLITE_MUTEX_NOOP implementation is a set of routines
+** The SQLITE_MUTEX_NOOP implementation is a set of routines
** that does no real locking and is appropriate for use in
-** a single-threaded application. ^The SQLITE_MUTEX_PTHREADS and
+** a single-threaded application. The SQLITE_MUTEX_PTHREADS and
** SQLITE_MUTEX_W32 implementations are appropriate for use on Unix
** and Windows.
**
-** ^(If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor
+** If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor
** macro defined (with "-DSQLITE_MUTEX_APPDEF=1"), then no mutex
** implementation is included with the library. In this case the
** application must supply a custom mutex implementation using the
** [SQLITE_CONFIG_MUTEX] option of the sqlite3_config() function
** before calling sqlite3_initialize() or any other public sqlite3_
-** function that calls sqlite3_initialize().)^
+** function that calls sqlite3_initialize().
**
** ^The sqlite3_mutex_alloc() routine allocates a new
-** mutex and returns a pointer to it. ^If it returns NULL
-** that means that a mutex could not be allocated. ^SQLite
-** will unwind its stack and return an error. ^(The argument
-** to sqlite3_mutex_alloc() is one of these integer constants:
+** mutex and returns a pointer to it. ^The sqlite3_mutex_alloc()
+** routine returns NULL if it is unable to allocate the requested
+** mutex. The argument to sqlite3_mutex_alloc() must one of these
+** integer constants:
**
** <ul>
** <li> SQLITE_MUTEX_FAST
** <li> SQLITE_MUTEX_STATIC_PMEM
** <li> SQLITE_MUTEX_STATIC_APP1
** <li> SQLITE_MUTEX_STATIC_APP2
-** </ul>)^
+** <li> SQLITE_MUTEX_STATIC_APP3
+** </ul>
**
** ^The first two constants (SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE)
** cause sqlite3_mutex_alloc() to create
** is used but not necessarily so when SQLITE_MUTEX_FAST is used.
** The mutex implementation does not need to make a distinction
** between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does
-** not want to. ^SQLite will only request a recursive mutex in
-** cases where it really needs one. ^If a faster non-recursive mutex
+** not want to. SQLite will only request a recursive mutex in
+** cases where it really needs one. If a faster non-recursive mutex
** implementation is available on the host platform, the mutex subsystem
** might return such a mutex in response to SQLITE_MUTEX_FAST.
**
** ^The other allowed parameters to sqlite3_mutex_alloc() (anything other
** than SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE) each return
-** a pointer to a static preexisting mutex. ^Six static mutexes are
+** a pointer to a static preexisting mutex. ^Nine static mutexes are
** used by the current version of SQLite. Future versions of SQLite
** may add additional static mutexes. Static mutexes are for internal
** use by SQLite only. Applications that use SQLite mutexes should
**
** ^Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST
** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc()
-** returns a different mutex on every call. ^But for the static
+** returns a different mutex on every call. ^For the static
** mutex types, the same mutex is returned on every call that has
** the same type number.
**
** ^The sqlite3_mutex_free() routine deallocates a previously
-** allocated dynamic mutex. ^SQLite is careful to deallocate every
-** dynamic mutex that it allocates. The dynamic mutexes must not be in
-** use when they are deallocated. Attempting to deallocate a static
-** mutex results in undefined behavior. ^SQLite never deallocates
-** a static mutex.
+** allocated dynamic mutex. Attempting to deallocate a static
+** mutex results in undefined behavior.
**
** ^The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt
** to enter a mutex. ^If another thread is already within the mutex,
** SQLITE_BUSY. ^The sqlite3_mutex_try() interface returns [SQLITE_OK]
** upon successful entry. ^(Mutexes created using
** SQLITE_MUTEX_RECURSIVE can be entered multiple times by the same thread.
-** In such cases the,
+** In such cases, the
** mutex must be exited an equal number of times before another thread
-** can enter.)^ ^(If the same thread tries to enter any other
-** kind of mutex more than once, the behavior is undefined.
-** SQLite will never exhibit
-** such behavior in its own use of mutexes.)^
+** can enter.)^ If the same thread tries to enter any mutex other
+** than an SQLITE_MUTEX_RECURSIVE more than once, the behavior is undefined.
**
** ^(Some systems (for example, Windows 95) do not support the operation
** implemented by sqlite3_mutex_try(). On those systems, sqlite3_mutex_try()
-** will always return SQLITE_BUSY. The SQLite core only ever uses
-** sqlite3_mutex_try() as an optimization so this is acceptable behavior.)^
+** will always return SQLITE_BUSY. The SQLite core only ever uses
+** sqlite3_mutex_try() as an optimization so this is acceptable
+** behavior.)^
**
** ^The sqlite3_mutex_leave() routine exits a mutex that was
-** previously entered by the same thread. ^(The behavior
+** previously entered by the same thread. The behavior
** is undefined if the mutex is not currently entered by the
-** calling thread or is not currently allocated. SQLite will
-** never do either.)^
+** calling thread or is not currently allocated.
**
** ^If the argument to sqlite3_mutex_enter(), sqlite3_mutex_try(), or
** sqlite3_mutex_leave() is a NULL pointer, then all three routines
**
** See also: [sqlite3_mutex_held()] and [sqlite3_mutex_notheld()].
*/
-SQLITE_API sqlite3_mutex *sqlite3_mutex_alloc(int);
-SQLITE_API void sqlite3_mutex_free(sqlite3_mutex*);
-SQLITE_API void sqlite3_mutex_enter(sqlite3_mutex*);
-SQLITE_API int sqlite3_mutex_try(sqlite3_mutex*);
-SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex*);
+SQLITE_API sqlite3_mutex *SQLITE_STDCALL sqlite3_mutex_alloc(int);
+SQLITE_API void SQLITE_STDCALL sqlite3_mutex_free(sqlite3_mutex*);
+SQLITE_API void SQLITE_STDCALL sqlite3_mutex_enter(sqlite3_mutex*);
+SQLITE_API int SQLITE_STDCALL sqlite3_mutex_try(sqlite3_mutex*);
+SQLITE_API void SQLITE_STDCALL sqlite3_mutex_leave(sqlite3_mutex*);
/*
** CAPI3REF: Mutex Methods Object
** used to allocate and use mutexes.
**
** Usually, the default mutex implementations provided by SQLite are
-** sufficient, however the user has the option of substituting a custom
+** sufficient, however the application has the option of substituting a custom
** implementation for specialized deployments or systems for which SQLite
-** does not provide a suitable implementation. In this case, the user
+** does not provide a suitable implementation. In this case, the application
** creates and populates an instance of this structure to pass
** to sqlite3_config() along with the [SQLITE_CONFIG_MUTEX] option.
** Additionally, an instance of this structure can be used as an
** (i.e. it is acceptable to provide an implementation that segfaults if
** it is passed a NULL pointer).
**
-** The xMutexInit() method must be threadsafe. ^It must be harmless to
+** The xMutexInit() method must be threadsafe. It must be harmless to
** invoke xMutexInit() multiple times within the same process and without
** intervening calls to xMutexEnd(). Second and subsequent calls to
** xMutexInit() must be no-ops.
**
-** ^xMutexInit() must not use SQLite memory allocation ([sqlite3_malloc()]
-** and its associates). ^Similarly, xMutexAlloc() must not use SQLite memory
+** xMutexInit() must not use SQLite memory allocation ([sqlite3_malloc()]
+** and its associates). Similarly, xMutexAlloc() must not use SQLite memory
** allocation for a static mutex. ^However xMutexAlloc() may use SQLite
** memory allocation for a fast or recursive mutex.
**
** CAPI3REF: Mutex Verification Routines
**
** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routines
-** are intended for use inside assert() statements. ^The SQLite core
+** are intended for use inside assert() statements. The SQLite core
** never uses these routines except inside an assert() and applications
-** are advised to follow the lead of the core. ^The SQLite core only
+** are advised to follow the lead of the core. The SQLite core only
** provides implementations for these routines when it is compiled
-** with the SQLITE_DEBUG flag. ^External mutex implementations
+** with the SQLITE_DEBUG flag. External mutex implementations
** are only required to provide these routines if SQLITE_DEBUG is
** defined and if NDEBUG is not defined.
**
-** ^These routines should return true if the mutex in their argument
+** These routines should return true if the mutex in their argument
** is held or not held, respectively, by the calling thread.
**
-** ^The implementation is not required to provide versions of these
+** The implementation is not required to provide versions of these
** routines that actually work. If the implementation does not provide working
** versions of these routines, it should at least provide stubs that always
** return true so that one does not get spurious assertion failures.
**
-** ^If the argument to sqlite3_mutex_held() is a NULL pointer then
+** If the argument to sqlite3_mutex_held() is a NULL pointer then
** the routine should return 1. This seems counter-intuitive since
** clearly the mutex cannot be held if it does not exist. But
** the reason the mutex does not exist is because the build is not
** using mutexes. And we do not want the assert() containing the
** call to sqlite3_mutex_held() to fail, so a non-zero return is
-** the appropriate thing to do. ^The sqlite3_mutex_notheld()
+** the appropriate thing to do. The sqlite3_mutex_notheld()
** interface should also return 1 when given a NULL pointer.
*/
#ifndef NDEBUG
-SQLITE_API int sqlite3_mutex_held(sqlite3_mutex*);
-SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex*);
+SQLITE_API int SQLITE_STDCALL sqlite3_mutex_held(sqlite3_mutex*);
+SQLITE_API int SQLITE_STDCALL sqlite3_mutex_notheld(sqlite3_mutex*);
#endif
/*
** ^If the [threading mode] is Single-thread or Multi-thread then this
** routine returns a NULL pointer.
*/
-SQLITE_API sqlite3_mutex *sqlite3_db_mutex(sqlite3*);
+SQLITE_API sqlite3_mutex *SQLITE_STDCALL sqlite3_db_mutex(sqlite3*);
/*
** CAPI3REF: Low-Level Control Of Database Files
**
** See also: [SQLITE_FCNTL_LOCKSTATE]
*/
-SQLITE_API int sqlite3_file_control(sqlite3*, const char *zDbName, int op, void*);
+SQLITE_API int SQLITE_STDCALL sqlite3_file_control(sqlite3*, const char *zDbName, int op, void*);
/*
** CAPI3REF: Testing Interface
** Unlike most of the SQLite API, this function is not guaranteed to
** operate consistently from one release to the next.
*/
-SQLITE_API int sqlite3_test_control(int op, ...);
+SQLITE_API int SQLITE_CDECL sqlite3_test_control(int op, ...);
/*
** CAPI3REF: Testing Interface Operation Codes
#define SQLITE_TESTCTRL_BYTEORDER 22
#define SQLITE_TESTCTRL_ISINIT 23
#define SQLITE_TESTCTRL_SORTER_MMAP 24
-#define SQLITE_TESTCTRL_LAST 24
+#define SQLITE_TESTCTRL_IMPOSTER 25
+#define SQLITE_TESTCTRL_LAST 25
/*
** CAPI3REF: SQLite Runtime Status
**
-** ^This interface is used to retrieve runtime status information
+** ^These interfaces are used to retrieve runtime status information
** about the performance of SQLite, and optionally to reset various
** highwater marks. ^The first argument is an integer code for
** the specific parameter to measure. ^(Recognized integer codes
** ^(Other parameters record only the highwater mark and not the current
** value. For these latter parameters nothing is written into *pCurrent.)^
**
-** ^The sqlite3_status() routine returns SQLITE_OK on success and a
-** non-zero [error code] on failure.
+** ^The sqlite3_status() and sqlite3_status64() routines return
+** SQLITE_OK on success and a non-zero [error code] on failure.
**
-** This routine is threadsafe but is not atomic. This routine can be
-** called while other threads are running the same or different SQLite
-** interfaces. However the values returned in *pCurrent and
-** *pHighwater reflect the status of SQLite at different points in time
-** and it is possible that another thread might change the parameter
-** in between the times when *pCurrent and *pHighwater are written.
+** If either the current value or the highwater mark is too large to
+** be represented by a 32-bit integer, then the values returned by
+** sqlite3_status() are undefined.
**
** See also: [sqlite3_db_status()]
*/
-SQLITE_API int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag);
+SQLITE_API int SQLITE_STDCALL sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag);
+SQLITE_API int SQLITE_STDCALL sqlite3_status64(
+ int op,
+ sqlite3_int64 *pCurrent,
+ sqlite3_int64 *pHighwater,
+ int resetFlag
+);
/*
**
** See also: [sqlite3_status()] and [sqlite3_stmt_status()].
*/
-SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int resetFlg);
+SQLITE_API int SQLITE_STDCALL sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int resetFlg);
/*
** CAPI3REF: Status Parameters for database connections
**
** See also: [sqlite3_status()] and [sqlite3_db_status()].
*/
-SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg);
+SQLITE_API int SQLITE_STDCALL sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg);
/*
** CAPI3REF: Status Parameters for prepared statements
** must be different or else sqlite3_backup_init(D,N,S,M) will fail with
** an error.
**
+** ^A call to sqlite3_backup_init() will fail, returning SQLITE_ERROR, if
+** there is already a read or read-write transaction open on the
+** destination database.
+**
** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is
** returned and an error code and error message are stored in the
** destination [database connection] D.
** is not a permanent error and does not affect the return value of
** sqlite3_backup_finish().
**
-** [[sqlite3_backup__remaining()]] [[sqlite3_backup_pagecount()]]
+** [[sqlite3_backup_remaining()]] [[sqlite3_backup_pagecount()]]
** <b>sqlite3_backup_remaining() and sqlite3_backup_pagecount()</b>
**
-** ^Each call to sqlite3_backup_step() sets two values inside
-** the [sqlite3_backup] object: the number of pages still to be backed
-** up and the total number of pages in the source database file.
-** The sqlite3_backup_remaining() and sqlite3_backup_pagecount() interfaces
-** retrieve these two values, respectively.
-**
-** ^The values returned by these functions are only updated by
-** sqlite3_backup_step(). ^If the source database is modified during a backup
-** operation, then the values are not updated to account for any extra
-** pages that need to be updated or the size of the source database file
-** changing.
+** ^The sqlite3_backup_remaining() routine returns the number of pages still
+** to be backed up at the conclusion of the most recent sqlite3_backup_step().
+** ^The sqlite3_backup_pagecount() routine returns the total number of pages
+** in the source database at the conclusion of the most recent
+** sqlite3_backup_step().
+** ^(The values returned by these functions are only updated by
+** sqlite3_backup_step(). If the source database is modified in a way that
+** changes the size of the source database or the number of pages remaining,
+** those changes are not reflected in the output of sqlite3_backup_pagecount()
+** and sqlite3_backup_remaining() until after the next
+** sqlite3_backup_step().)^
**
** <b>Concurrent Usage of Database Handles</b>
**
** same time as another thread is invoking sqlite3_backup_step() it is
** possible that they return invalid values.
*/
-SQLITE_API sqlite3_backup *sqlite3_backup_init(
+SQLITE_API sqlite3_backup *SQLITE_STDCALL sqlite3_backup_init(
sqlite3 *pDest, /* Destination database handle */
const char *zDestName, /* Destination database name */
sqlite3 *pSource, /* Source database handle */
const char *zSourceName /* Source database name */
);
-SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage);
-SQLITE_API int sqlite3_backup_finish(sqlite3_backup *p);
-SQLITE_API int sqlite3_backup_remaining(sqlite3_backup *p);
-SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p);
+SQLITE_API int SQLITE_STDCALL sqlite3_backup_step(sqlite3_backup *p, int nPage);
+SQLITE_API int SQLITE_STDCALL sqlite3_backup_finish(sqlite3_backup *p);
+SQLITE_API int SQLITE_STDCALL sqlite3_backup_remaining(sqlite3_backup *p);
+SQLITE_API int SQLITE_STDCALL sqlite3_backup_pagecount(sqlite3_backup *p);
/*
** CAPI3REF: Unlock Notification
** the special "DROP TABLE/INDEX" case, the extended error code is just
** SQLITE_LOCKED.)^
*/
-SQLITE_API int sqlite3_unlock_notify(
+SQLITE_API int SQLITE_STDCALL sqlite3_unlock_notify(
sqlite3 *pBlocked, /* Waiting connection */
void (*xNotify)(void **apArg, int nArg), /* Callback function to invoke */
void *pNotifyArg /* Argument to pass to xNotify */
** strings in a case-independent fashion, using the same definition of "case
** independence" that SQLite uses internally when comparing identifiers.
*/
-SQLITE_API int sqlite3_stricmp(const char *, const char *);
-SQLITE_API int sqlite3_strnicmp(const char *, const char *, int);
+SQLITE_API int SQLITE_STDCALL sqlite3_stricmp(const char *, const char *);
+SQLITE_API int SQLITE_STDCALL sqlite3_strnicmp(const char *, const char *, int);
/*
** CAPI3REF: String Globbing
** Note that this routine returns zero on a match and non-zero if the strings
** do not match, the same as [sqlite3_stricmp()] and [sqlite3_strnicmp()].
*/
-SQLITE_API int sqlite3_strglob(const char *zGlob, const char *zStr);
+SQLITE_API int SQLITE_STDCALL sqlite3_strglob(const char *zGlob, const char *zStr);
/*
** CAPI3REF: Error Logging Interface
** a few hundred characters, it will be truncated to the length of the
** buffer.
*/
-SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...);
+SQLITE_API void SQLITE_CDECL sqlite3_log(int iErrCode, const char *zFormat, ...);
/*
** CAPI3REF: Write-Ahead Log Commit Hook
**
** ^The [sqlite3_wal_hook()] function is used to register a callback that
-** will be invoked each time a database connection commits data to a
-** [write-ahead log] (i.e. whenever a transaction is committed in
-** [journal_mode | journal_mode=WAL mode]).
+** is invoked each time data is committed to a database in wal mode.
**
-** ^The callback is invoked by SQLite after the commit has taken place and
-** the associated write-lock on the database released, so the implementation
+** ^(The callback is invoked by SQLite after the commit has taken place and
+** the associated write-lock on the database released)^, so the implementation
** may read, write or [checkpoint] the database as required.
**
** ^The first parameter passed to the callback function when it is invoked
** [wal_autocheckpoint pragma] both invoke [sqlite3_wal_hook()] and will
** those overwrite any prior [sqlite3_wal_hook()] settings.
*/
-SQLITE_API void *sqlite3_wal_hook(
+SQLITE_API void *SQLITE_STDCALL sqlite3_wal_hook(
sqlite3*,
int(*)(void *,sqlite3*,const char*,int),
void*
** is only necessary if the default setting is found to be suboptimal
** for a particular application.
*/
-SQLITE_API int sqlite3_wal_autocheckpoint(sqlite3 *db, int N);
+SQLITE_API int SQLITE_STDCALL sqlite3_wal_autocheckpoint(sqlite3 *db, int N);
/*
** CAPI3REF: Checkpoint a database
**
-** ^The [sqlite3_wal_checkpoint(D,X)] interface causes database named X
-** on [database connection] D to be [checkpointed]. ^If X is NULL or an
-** empty string, then a checkpoint is run on all databases of
-** connection D. ^If the database connection D is not in
-** [WAL | write-ahead log mode] then this interface is a harmless no-op.
-** ^The [sqlite3_wal_checkpoint(D,X)] interface initiates a
-** [sqlite3_wal_checkpoint_v2|PASSIVE] checkpoint.
-** Use the [sqlite3_wal_checkpoint_v2()] interface to get a FULL
-** or RESET checkpoint.
+** ^(The sqlite3_wal_checkpoint(D,X) is equivalent to
+** [sqlite3_wal_checkpoint_v2](D,X,[SQLITE_CHECKPOINT_PASSIVE],0,0).)^
**
-** ^The [wal_checkpoint pragma] can be used to invoke this interface
-** from SQL. ^The [sqlite3_wal_autocheckpoint()] interface and the
-** [wal_autocheckpoint pragma] can be used to cause this interface to be
-** run whenever the WAL reaches a certain size threshold.
+** In brief, sqlite3_wal_checkpoint(D,X) causes the content in the
+** [write-ahead log] for database X on [database connection] D to be
+** transferred into the database file and for the write-ahead log to
+** be reset. See the [checkpointing] documentation for addition
+** information.
**
-** See also: [sqlite3_wal_checkpoint_v2()]
+** This interface used to be the only way to cause a checkpoint to
+** occur. But then the newer and more powerful [sqlite3_wal_checkpoint_v2()]
+** interface was added. This interface is retained for backwards
+** compatibility and as a convenience for applications that need to manually
+** start a callback but which do not need the full power (and corresponding
+** complication) of [sqlite3_wal_checkpoint_v2()].
*/
-SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb);
+SQLITE_API int SQLITE_STDCALL sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb);
/*
** CAPI3REF: Checkpoint a database
**
-** Run a checkpoint operation on WAL database zDb attached to database
-** handle db. The specific operation is determined by the value of the
-** eMode parameter:
+** ^(The sqlite3_wal_checkpoint_v2(D,X,M,L,C) interface runs a checkpoint
+** operation on database X of [database connection] D in mode M. Status
+** information is written back into integers pointed to by L and C.)^
+** ^(The M parameter must be a valid [checkpoint mode]:)^
**
** <dl>
** <dt>SQLITE_CHECKPOINT_PASSIVE<dd>
-** Checkpoint as many frames as possible without waiting for any database
-** readers or writers to finish. Sync the db file if all frames in the log
-** are checkpointed. This mode is the same as calling
-** sqlite3_wal_checkpoint(). The [sqlite3_busy_handler|busy-handler callback]
-** is never invoked.
+** ^Checkpoint as many frames as possible without waiting for any database
+** readers or writers to finish, then sync the database file if all frames
+** in the log were checkpointed. ^The [busy-handler callback]
+** is never invoked in the SQLITE_CHECKPOINT_PASSIVE mode.
+** ^On the other hand, passive mode might leave the checkpoint unfinished
+** if there are concurrent readers or writers.
**
** <dt>SQLITE_CHECKPOINT_FULL<dd>
-** This mode blocks (it invokes the
+** ^This mode blocks (it invokes the
** [sqlite3_busy_handler|busy-handler callback]) until there is no
** database writer and all readers are reading from the most recent database
-** snapshot. It then checkpoints all frames in the log file and syncs the
-** database file. This call blocks database writers while it is running,
-** but not database readers.
+** snapshot. ^It then checkpoints all frames in the log file and syncs the
+** database file. ^This mode blocks new database writers while it is pending,
+** but new database readers are allowed to continue unimpeded.
**
** <dt>SQLITE_CHECKPOINT_RESTART<dd>
-** This mode works the same way as SQLITE_CHECKPOINT_FULL, except after
-** checkpointing the log file it blocks (calls the
-** [sqlite3_busy_handler|busy-handler callback])
-** until all readers are reading from the database file only. This ensures
-** that the next client to write to the database file restarts the log file
-** from the beginning. This call blocks database writers while it is running,
-** but not database readers.
+** ^This mode works the same way as SQLITE_CHECKPOINT_FULL with the addition
+** that after checkpointing the log file it blocks (calls the
+** [busy-handler callback])
+** until all readers are reading from the database file only. ^This ensures
+** that the next writer will restart the log file from the beginning.
+** ^Like SQLITE_CHECKPOINT_FULL, this mode blocks new
+** database writer attempts while it is pending, but does not impede readers.
+**
+** <dt>SQLITE_CHECKPOINT_TRUNCATE<dd>
+** ^This mode works the same way as SQLITE_CHECKPOINT_RESTART with the
+** addition that it also truncates the log file to zero bytes just prior
+** to a successful return.
** </dl>
**
-** If pnLog is not NULL, then *pnLog is set to the total number of frames in
-** the log file before returning. If pnCkpt is not NULL, then *pnCkpt is set to
-** the total number of checkpointed frames (including any that were already
-** checkpointed when this function is called). *pnLog and *pnCkpt may be
-** populated even if sqlite3_wal_checkpoint_v2() returns other than SQLITE_OK.
-** If no values are available because of an error, they are both set to -1
-** before returning to communicate this to the caller.
-**
-** All calls obtain an exclusive "checkpoint" lock on the database file. If
+** ^If pnLog is not NULL, then *pnLog is set to the total number of frames in
+** the log file or to -1 if the checkpoint could not run because
+** of an error or because the database is not in [WAL mode]. ^If pnCkpt is not
+** NULL,then *pnCkpt is set to the total number of checkpointed frames in the
+** log file (including any that were already checkpointed before the function
+** was called) or to -1 if the checkpoint could not run due to an error or
+** because the database is not in WAL mode. ^Note that upon successful
+** completion of an SQLITE_CHECKPOINT_TRUNCATE, the log file will have been
+** truncated to zero bytes and so both *pnLog and *pnCkpt will be set to zero.
+**
+** ^All calls obtain an exclusive "checkpoint" lock on the database file. ^If
** any other process is running a checkpoint operation at the same time, the
-** lock cannot be obtained and SQLITE_BUSY is returned. Even if there is a
+** lock cannot be obtained and SQLITE_BUSY is returned. ^Even if there is a
** busy-handler configured, it will not be invoked in this case.
**
-** The SQLITE_CHECKPOINT_FULL and RESTART modes also obtain the exclusive
-** "writer" lock on the database file. If the writer lock cannot be obtained
-** immediately, and a busy-handler is configured, it is invoked and the writer
-** lock retried until either the busy-handler returns 0 or the lock is
-** successfully obtained. The busy-handler is also invoked while waiting for
-** database readers as described above. If the busy-handler returns 0 before
+** ^The SQLITE_CHECKPOINT_FULL, RESTART and TRUNCATE modes also obtain the
+** exclusive "writer" lock on the database file. ^If the writer lock cannot be
+** obtained immediately, and a busy-handler is configured, it is invoked and
+** the writer lock retried until either the busy-handler returns 0 or the lock
+** is successfully obtained. ^The busy-handler is also invoked while waiting for
+** database readers as described above. ^If the busy-handler returns 0 before
** the writer lock is obtained or while waiting for database readers, the
** checkpoint operation proceeds from that point in the same way as
** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible
-** without blocking any further. SQLITE_BUSY is returned in this case.
+** without blocking any further. ^SQLITE_BUSY is returned in this case.
**
-** If parameter zDb is NULL or points to a zero length string, then the
-** specified operation is attempted on all WAL databases. In this case the
-** values written to output parameters *pnLog and *pnCkpt are undefined. If
+** ^If parameter zDb is NULL or points to a zero length string, then the
+** specified operation is attempted on all WAL databases [attached] to
+** [database connection] db. In this case the
+** values written to output parameters *pnLog and *pnCkpt are undefined. ^If
** an SQLITE_BUSY error is encountered when processing one or more of the
** attached WAL databases, the operation is still attempted on any remaining
-** attached databases and SQLITE_BUSY is returned to the caller. If any other
+** attached databases and SQLITE_BUSY is returned at the end. ^If any other
** error occurs while processing an attached database, processing is abandoned
-** and the error code returned to the caller immediately. If no error
+** and the error code is returned to the caller immediately. ^If no error
** (SQLITE_BUSY or otherwise) is encountered while processing the attached
** databases, SQLITE_OK is returned.
**
-** If database zDb is the name of an attached database that is not in WAL
-** mode, SQLITE_OK is returned and both *pnLog and *pnCkpt set to -1. If
+** ^If database zDb is the name of an attached database that is not in WAL
+** mode, SQLITE_OK is returned and both *pnLog and *pnCkpt set to -1. ^If
** zDb is not NULL (or a zero length string) and is not the name of any
** attached database, SQLITE_ERROR is returned to the caller.
+**
+** ^Unless it returns SQLITE_MISUSE,
+** the sqlite3_wal_checkpoint_v2() interface
+** sets the error information that is queried by
+** [sqlite3_errcode()] and [sqlite3_errmsg()].
+**
+** ^The [PRAGMA wal_checkpoint] command can be used to invoke this interface
+** from SQL.
*/
-SQLITE_API int sqlite3_wal_checkpoint_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_wal_checkpoint_v2(
sqlite3 *db, /* Database handle */
const char *zDb, /* Name of attached database (or NULL) */
int eMode, /* SQLITE_CHECKPOINT_* value */
);
/*
-** CAPI3REF: Checkpoint operation parameters
+** CAPI3REF: Checkpoint Mode Values
+** KEYWORDS: {checkpoint mode}
**
-** These constants can be used as the 3rd parameter to
-** [sqlite3_wal_checkpoint_v2()]. See the [sqlite3_wal_checkpoint_v2()]
-** documentation for additional information about the meaning and use of
-** each of these values.
+** These constants define all valid values for the "checkpoint mode" passed
+** as the third parameter to the [sqlite3_wal_checkpoint_v2()] interface.
+** See the [sqlite3_wal_checkpoint_v2()] documentation for details on the
+** meaning of each of these checkpoint modes.
*/
-#define SQLITE_CHECKPOINT_PASSIVE 0
-#define SQLITE_CHECKPOINT_FULL 1
-#define SQLITE_CHECKPOINT_RESTART 2
+#define SQLITE_CHECKPOINT_PASSIVE 0 /* Do as much as possible w/o blocking */
+#define SQLITE_CHECKPOINT_FULL 1 /* Wait for writers, then checkpoint */
+#define SQLITE_CHECKPOINT_RESTART 2 /* Like FULL but wait for for readers */
+#define SQLITE_CHECKPOINT_TRUNCATE 3 /* Like RESTART but also truncate WAL */
/*
** CAPI3REF: Virtual Table Interface Configuration
** this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].) Further options
** may be added in the future.
*/
-SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...);
+SQLITE_API int SQLITE_CDECL sqlite3_vtab_config(sqlite3*, int op, ...);
/*
** CAPI3REF: Virtual Table Configuration Options
** of the SQL statement that triggered the call to the [xUpdate] method of the
** [virtual table].
*/
-SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *);
+SQLITE_API int SQLITE_STDCALL sqlite3_vtab_on_conflict(sqlite3 *);
/*
** CAPI3REF: Conflict resolution modes
/* #define SQLITE_ABORT 4 // Also an error code */
#define SQLITE_REPLACE 5
+/*
+** CAPI3REF: Prepared Statement Scan Status Opcodes
+** KEYWORDS: {scanstatus options}
+**
+** The following constants can be used for the T parameter to the
+** [sqlite3_stmt_scanstatus(S,X,T,V)] interface. Each constant designates a
+** different metric for sqlite3_stmt_scanstatus() to return.
+**
+** When the value returned to V is a string, space to hold that string is
+** managed by the prepared statement S and will be automatically freed when
+** S is finalized.
+**
+** <dl>
+** [[SQLITE_SCANSTAT_NLOOP]] <dt>SQLITE_SCANSTAT_NLOOP</dt>
+** <dd>^The [sqlite3_int64] variable pointed to by the T parameter will be
+** set to the total number of times that the X-th loop has run.</dd>
+**
+** [[SQLITE_SCANSTAT_NVISIT]] <dt>SQLITE_SCANSTAT_NVISIT</dt>
+** <dd>^The [sqlite3_int64] variable pointed to by the T parameter will be set
+** to the total number of rows examined by all iterations of the X-th loop.</dd>
+**
+** [[SQLITE_SCANSTAT_EST]] <dt>SQLITE_SCANSTAT_EST</dt>
+** <dd>^The "double" variable pointed to by the T parameter will be set to the
+** query planner's estimate for the average number of rows output from each
+** iteration of the X-th loop. If the query planner's estimates was accurate,
+** then this value will approximate the quotient NVISIT/NLOOP and the
+** product of this value for all prior loops with the same SELECTID will
+** be the NLOOP value for the current loop.
+**
+** [[SQLITE_SCANSTAT_NAME]] <dt>SQLITE_SCANSTAT_NAME</dt>
+** <dd>^The "const char *" variable pointed to by the T parameter will be set
+** to a zero-terminated UTF-8 string containing the name of the index or table
+** used for the X-th loop.
+**
+** [[SQLITE_SCANSTAT_EXPLAIN]] <dt>SQLITE_SCANSTAT_EXPLAIN</dt>
+** <dd>^The "const char *" variable pointed to by the T parameter will be set
+** to a zero-terminated UTF-8 string containing the [EXPLAIN QUERY PLAN]
+** description for the X-th loop.
+**
+** [[SQLITE_SCANSTAT_SELECTID]] <dt>SQLITE_SCANSTAT_SELECT</dt>
+** <dd>^The "int" variable pointed to by the T parameter will be set to the
+** "select-id" for the X-th loop. The select-id identifies which query or
+** subquery the loop is part of. The main query has a select-id of zero.
+** The select-id is the same value as is output in the first column
+** of an [EXPLAIN QUERY PLAN] query.
+** </dl>
+*/
+#define SQLITE_SCANSTAT_NLOOP 0
+#define SQLITE_SCANSTAT_NVISIT 1
+#define SQLITE_SCANSTAT_EST 2
+#define SQLITE_SCANSTAT_NAME 3
+#define SQLITE_SCANSTAT_EXPLAIN 4
+#define SQLITE_SCANSTAT_SELECTID 5
+
+/*
+** CAPI3REF: Prepared Statement Scan Status
+**
+** This interface returns information about the predicted and measured
+** performance for pStmt. Advanced applications can use this
+** interface to compare the predicted and the measured performance and
+** issue warnings and/or rerun [ANALYZE] if discrepancies are found.
+**
+** Since this interface is expected to be rarely used, it is only
+** available if SQLite is compiled using the [SQLITE_ENABLE_STMT_SCANSTATUS]
+** compile-time option.
+**
+** The "iScanStatusOp" parameter determines which status information to return.
+** The "iScanStatusOp" must be one of the [scanstatus options] or the behavior
+** of this interface is undefined.
+** ^The requested measurement is written into a variable pointed to by
+** the "pOut" parameter.
+** Parameter "idx" identifies the specific loop to retrieve statistics for.
+** Loops are numbered starting from zero. ^If idx is out of range - less than
+** zero or greater than or equal to the total number of loops used to implement
+** the statement - a non-zero value is returned and the variable that pOut
+** points to is unchanged.
+**
+** ^Statistics might not be available for all loops in all statements. ^In cases
+** where there exist loops with no available statistics, this function behaves
+** as if the loop did not exist - it returns non-zero and leave the variable
+** that pOut points to unchanged.
+**
+** See also: [sqlite3_stmt_scanstatus_reset()]
+*/
+SQLITE_API SQLITE_EXPERIMENTAL int SQLITE_STDCALL sqlite3_stmt_scanstatus(
+ sqlite3_stmt *pStmt, /* Prepared statement for which info desired */
+ int idx, /* Index of loop to report on */
+ int iScanStatusOp, /* Information desired. SQLITE_SCANSTAT_* */
+ void *pOut /* Result written here */
+);
+
+/*
+** CAPI3REF: Zero Scan-Status Counters
+**
+** ^Zero all [sqlite3_stmt_scanstatus()] related event counters.
+**
+** This API is only available if the library is built with pre-processor
+** symbol [SQLITE_ENABLE_STMT_SCANSTATUS] defined.
+*/
+SQLITE_API SQLITE_EXPERIMENTAL void SQLITE_STDCALL sqlite3_stmt_scanstatus_reset(sqlite3_stmt*);
/*
**
** SELECT ... FROM <rtree> WHERE <rtree col> MATCH $zGeom(... params ...)
*/
-SQLITE_API int sqlite3_rtree_geometry_callback(
+SQLITE_API int SQLITE_STDCALL sqlite3_rtree_geometry_callback(
sqlite3 *db,
const char *zGeom,
int (*xGeom)(sqlite3_rtree_geometry*, int, sqlite3_rtree_dbl*,int*),
**
** SELECT ... FROM <rtree> WHERE <rtree col> MATCH $zQueryFunc(... params ...)
*/
-SQLITE_API int sqlite3_rtree_query_callback(
+SQLITE_API int SQLITE_STDCALL sqlite3_rtree_query_callback(
sqlite3 *db,
const char *zQueryFunc,
int (*xQueryFunc)(sqlite3_rtree_query_info*),
#endif
/*
-** The maximum number of in-memory pages to use for the main database
-** table and for temporary tables. The SQLITE_DEFAULT_CACHE_SIZE
+** The suggested maximum number of in-memory pages to use for
+** the main database table and for temporary tables.
+**
+** IMPLEMENTATION-OF: R-31093-59126 The default suggested cache size
+** is 2000 pages.
+** IMPLEMENTATION-OF: R-48205-43578 The default suggested cache size can be
+** altered using the SQLITE_DEFAULT_CACHE_SIZE compile-time options.
*/
#ifndef SQLITE_DEFAULT_CACHE_SIZE
# define SQLITE_DEFAULT_CACHE_SIZE 2000
#endif
-#ifndef SQLITE_DEFAULT_TEMP_CACHE_SIZE
-# define SQLITE_DEFAULT_TEMP_CACHE_SIZE 500
-#endif
/*
** The default number of frames to accumulate in the log file before
#endif
/*
-** The SQLITE_DEFAULT_MEMSTATUS macro must be defined as either 0 or 1.
-** It determines whether or not the features related to
-** SQLITE_CONFIG_MEMSTATUS are available by default or not. This value can
-** be overridden at runtime using the sqlite3_config() API.
+** EVIDENCE-OF: R-25715-37072 Memory allocation statistics are enabled by
+** default unless SQLite is compiled with SQLITE_DEFAULT_MEMSTATUS=0 in
+** which case memory allocation statistics are disabled by default.
*/
#if !defined(SQLITE_DEFAULT_MEMSTATUS)
# define SQLITE_DEFAULT_MEMSTATUS 1
** gives a possible range of values of approximately 1.0e986 to 1e-986.
** But the allowed values are "grainy". Not every value is representable.
** For example, quantities 16 and 17 are both represented by a LogEst
-** of 40. However, since LogEst quantaties are suppose to be estimates,
+** of 40. However, since LogEst quantities are suppose to be estimates,
** not exact values, this imprecision is not a problem.
**
** "LogEst" is short for "Logarithmic Estimate".
*/
typedef INT16_TYPE LogEst;
+/*
+** Set the SQLITE_PTRSIZE macro to the number of bytes in a pointer
+*/
+#ifndef SQLITE_PTRSIZE
+# if defined(__SIZEOF_POINTER__)
+# define SQLITE_PTRSIZE __SIZEOF_POINTER__
+# elif defined(i386) || defined(__i386__) || defined(_M_IX86) || \
+ defined(_M_ARM) || defined(__arm__) || defined(__x86)
+# define SQLITE_PTRSIZE 4
+# else
+# define SQLITE_PTRSIZE 8
+# endif
+#endif
+
/*
** Macros to determine whether the machine is big or little endian,
** and whether or not that determination is run-time or compile-time.
#define SQLITE_WSD const
#define GLOBAL(t,v) (*(t*)sqlite3_wsd_find((void*)&(v), sizeof(v)))
#define sqlite3GlobalConfig GLOBAL(struct Sqlite3Config, sqlite3Config)
-SQLITE_API int sqlite3_wsd_init(int N, int J);
-SQLITE_API void *sqlite3_wsd_find(void *K, int L);
+SQLITE_API int SQLITE_STDCALL sqlite3_wsd_init(int N, int J);
+SQLITE_API void *SQLITE_STDCALL sqlite3_wsd_find(void *K, int L);
#else
#define SQLITE_WSD
#define GLOBAL(t,v) v
/* TODO: This definition is just included so other modules compile. It
** needs to be revisited.
*/
-#define SQLITE_N_BTREE_META 10
+#define SQLITE_N_BTREE_META 16
/*
** If defined as non-zero, auto-vacuum is enabled by default. Otherwise
SQLITE_PRIVATE int sqlite3BtreeMaxPageCount(Btree*,int);
SQLITE_PRIVATE u32 sqlite3BtreeLastPage(Btree*);
SQLITE_PRIVATE int sqlite3BtreeSecureDelete(Btree*,int);
-SQLITE_PRIVATE int sqlite3BtreeGetReserve(Btree*);
-#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_DEBUG)
+SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree*);
SQLITE_PRIVATE int sqlite3BtreeGetReserveNoMutex(Btree *p);
-#endif
SQLITE_PRIVATE int sqlite3BtreeSetAutoVacuum(Btree *, int);
SQLITE_PRIVATE int sqlite3BtreeGetAutoVacuum(Btree *);
SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree*,int);
SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster);
SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree*, int);
SQLITE_PRIVATE int sqlite3BtreeCommit(Btree*);
-SQLITE_PRIVATE int sqlite3BtreeRollback(Btree*,int);
+SQLITE_PRIVATE int sqlite3BtreeRollback(Btree*,int,int);
SQLITE_PRIVATE int sqlite3BtreeBeginStmt(Btree*,int);
SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree*, int*, int flags);
SQLITE_PRIVATE int sqlite3BtreeIsInTrans(Btree*);
SQLITE_PRIVATE int sqlite3BtreeDropTable(Btree*, int, int*);
SQLITE_PRIVATE int sqlite3BtreeClearTable(Btree*, int, int*);
SQLITE_PRIVATE int sqlite3BtreeClearTableOfCursor(BtCursor*);
-SQLITE_PRIVATE void sqlite3BtreeTripAllCursors(Btree*, int);
+SQLITE_PRIVATE int sqlite3BtreeTripAllCursors(Btree*, int, int);
SQLITE_PRIVATE void sqlite3BtreeGetMeta(Btree *pBtree, int idx, u32 *pValue);
SQLITE_PRIVATE int sqlite3BtreeUpdateMeta(Btree*, int idx, u32 value);
** For example, the free-page-count field is located at byte offset 36 of
** the database file header. The incr-vacuum-flag field is located at
** byte offset 64 (== 36+4*7).
+**
+** The BTREE_DATA_VERSION value is not really a value stored in the header.
+** It is a read-only number computed by the pager. But we merge it with
+** the header value access routines since its access pattern is the same.
+** Call it a "virtual meta value".
*/
#define BTREE_FREE_PAGE_COUNT 0
#define BTREE_SCHEMA_VERSION 1
#define BTREE_USER_VERSION 6
#define BTREE_INCR_VACUUM 7
#define BTREE_APPLICATION_ID 8
+#define BTREE_DATA_VERSION 15 /* A virtual meta-value */
/*
** Values that may be OR'd together to form the second argument of an
** sqlite3BtreeCursorHints() call.
+**
+** The BTREE_BULKLOAD flag is set on index cursors when the index is going
+** to be filled with content that is already in sorted order.
+**
+** The BTREE_SEEK_EQ flag is set on cursors that will get OP_SeekGE or
+** OP_SeekLE opcodes for a range search, but where the range of entries
+** selected will all have the same key. In other words, the cursor will
+** be used only for equality key searches.
+**
*/
-#define BTREE_BULKLOAD 0x00000001
+#define BTREE_BULKLOAD 0x00000001 /* Used to full index in sorted order */
+#define BTREE_SEEK_EQ 0x00000002 /* EQ seeks only - no range seeks */
SQLITE_PRIVATE int sqlite3BtreeCursor(
Btree*, /* BTree containing table to open */
SQLITE_PRIVATE void sqlite3BtreeClearCursor(BtCursor *);
SQLITE_PRIVATE int sqlite3BtreeSetVersion(Btree *pBt, int iVersion);
SQLITE_PRIVATE void sqlite3BtreeCursorHints(BtCursor *, unsigned int mask);
+#ifdef SQLITE_DEBUG
+SQLITE_PRIVATE int sqlite3BtreeCursorHasHint(BtCursor*, unsigned int mask);
+#endif
SQLITE_PRIVATE int sqlite3BtreeIsReadonly(Btree *pBt);
+SQLITE_PRIVATE int sqlite3HeaderSizeBtree(void);
#ifndef NDEBUG
SQLITE_PRIVATE int sqlite3BtreeCursorIsValid(BtCursor*);
#define OP_MemMax 136 /* synopsis: r[P1]=max(r[P1],r[P2]) */
#define OP_IfPos 137 /* synopsis: if r[P1]>0 goto P2 */
#define OP_IfNeg 138 /* synopsis: r[P1]+=P3, if r[P1]<0 goto P2 */
-#define OP_IfZero 139 /* synopsis: r[P1]+=P3, if r[P1]==0 goto P2 */
-#define OP_AggFinal 140 /* synopsis: accum=r[P1] N=P2 */
-#define OP_IncrVacuum 141
-#define OP_Expire 142
-#define OP_TableLock 143 /* synopsis: iDb=P1 root=P2 write=P3 */
-#define OP_VBegin 144
-#define OP_VCreate 145
-#define OP_VDestroy 146
-#define OP_VOpen 147
-#define OP_VColumn 148 /* synopsis: r[P3]=vcolumn(P2) */
-#define OP_VNext 149
-#define OP_VRename 150
-#define OP_Pagecount 151
-#define OP_MaxPgcnt 152
-#define OP_Init 153 /* synopsis: Start at P2 */
-#define OP_Noop 154
-#define OP_Explain 155
+#define OP_IfNotZero 139 /* synopsis: if r[P1]!=0 then r[P1]+=P3, goto P2 */
+#define OP_DecrJumpZero 140 /* synopsis: if (--r[P1])==0 goto P2 */
+#define OP_JumpZeroIncr 141 /* synopsis: if (r[P1]++)==0 ) goto P2 */
+#define OP_AggFinal 142 /* synopsis: accum=r[P1] N=P2 */
+#define OP_IncrVacuum 143
+#define OP_Expire 144
+#define OP_TableLock 145 /* synopsis: iDb=P1 root=P2 write=P3 */
+#define OP_VBegin 146
+#define OP_VCreate 147
+#define OP_VDestroy 148
+#define OP_VOpen 149
+#define OP_VColumn 150 /* synopsis: r[P3]=vcolumn(P2) */
+#define OP_VNext 151
+#define OP_VRename 152
+#define OP_Pagecount 153
+#define OP_MaxPgcnt 154
+#define OP_Init 155 /* synopsis: Start at P2 */
+#define OP_Noop 156
+#define OP_Explain 157
/* Properties such as "out2" or "jump" that are specified in
/* 112 */ 0x02, 0x01, 0x01, 0x01, 0x01, 0x02, 0x00, 0x00,\
/* 120 */ 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 128 */ 0x0c, 0x45, 0x15, 0x01, 0x02, 0x02, 0x00, 0x01,\
-/* 136 */ 0x08, 0x05, 0x05, 0x05, 0x00, 0x01, 0x00, 0x00,\
-/* 144 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02,\
-/* 152 */ 0x02, 0x01, 0x00, 0x00,}
+/* 136 */ 0x08, 0x05, 0x05, 0x05, 0x05, 0x05, 0x00, 0x01,\
+/* 144 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,\
+/* 152 */ 0x00, 0x02, 0x02, 0x01, 0x00, 0x00,}
/************** End of opcodes.h *********************************************/
/************** Continuing where we left off in vdbe.h ***********************/
# define VDBE_OFFSET_LINENO(x) 0
#endif
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+SQLITE_PRIVATE void sqlite3VdbeScanStatus(Vdbe*, int, int, int, LogEst, const char*);
+#else
+# define sqlite3VdbeScanStatus(a,b,c,d,e)
+#endif
+
#endif
/************** End of vdbe.h ************************************************/
/* Functions used to query pager state and configuration. */
SQLITE_PRIVATE u8 sqlite3PagerIsreadonly(Pager*);
+SQLITE_PRIVATE u32 sqlite3PagerDataVersion(Pager*);
SQLITE_PRIVATE int sqlite3PagerRefcount(Pager*);
SQLITE_PRIVATE int sqlite3PagerMemUsed(Pager*);
SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager*, int);
/* Functions used to truncate the database file. */
SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager*,Pgno);
+SQLITE_PRIVATE void sqlite3PagerRekey(DbPage*, Pgno, u16);
+
#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_WAL)
SQLITE_PRIVATE void *sqlite3PagerCodec(DbPage *);
#endif
SQLITE_PRIVATE void sqlite3PCacheSetDefault(void);
+/* Return the header size */
+SQLITE_PRIVATE int sqlite3HeaderSizePcache(void);
+SQLITE_PRIVATE int sqlite3HeaderSizePcache1(void);
+
#endif /* _PCACHE_H_ */
/************** End of pcache.h **********************************************/
int errCode; /* Most recent error code (SQLITE_*) */
int errMask; /* & result codes with this before returning */
u16 dbOptFlags; /* Flags to enable/disable optimizations */
+ u8 enc; /* Text encoding */
u8 autoCommit; /* The auto-commit flag. */
u8 temp_store; /* 1: file 2: memory 0: default */
u8 mallocFailed; /* True if we have seen a malloc failure */
u8 iDb; /* Which db file is being initialized */
u8 busy; /* TRUE if currently initializing */
u8 orphanTrigger; /* Last statement is orphaned TEMP trigger */
+ u8 imposterTable; /* Building an imposter table */
} init;
int nVdbeActive; /* Number of VDBEs currently running */
int nVdbeRead; /* Number of active VDBEs that read or write */
int nVdbeWrite; /* Number of active VDBEs that read and write */
int nVdbeExec; /* Number of nested calls to VdbeExec() */
+ int nVDestroy; /* Number of active OP_VDestroy operations */
int nExtension; /* Number of loaded extensions */
void **aExtension; /* Array of shared library handles */
void (*xTrace)(void*,const char*); /* Trace function */
/*
** A macro to discover the encoding of a database.
*/
-#define ENC(db) ((db)->aDb[0].pSchema->enc)
+#define SCHEMA_ENC(db) ((db)->aDb[0].pSchema->enc)
+#define ENC(db) ((db)->enc)
/*
** Possible values for the sqlite3.flags.
#define SQLITE_SubqCoroutine 0x0100 /* Evaluate subqueries as coroutines */
#define SQLITE_Transitive 0x0200 /* Transitive constraints */
#define SQLITE_OmitNoopJoin 0x0400 /* Omit unused tables in joins */
-#define SQLITE_Stat3 0x0800 /* Use the SQLITE_STAT3 table */
+#define SQLITE_Stat34 0x0800 /* Use STAT3 or STAT4 data */
#define SQLITE_AllOpts 0xffff /* All optimizations */
/*
u8 *aSortOrder; /* for each column: True==DESC, False==ASC */
char **azColl; /* Array of collation sequence names for index */
Expr *pPartIdxWhere; /* WHERE clause for partial indices */
- KeyInfo *pKeyInfo; /* A KeyInfo object suitable for this index */
int tnum; /* DB Page containing root of this index */
LogEst szIdxRow; /* Estimated average row size in bytes */
u16 nKeyCol; /* Number of columns forming the key */
unsigned uniqNotNull:1; /* True if UNIQUE and NOT NULL for all columns */
unsigned isResized:1; /* True if resizeIndexObject() has been called */
unsigned isCovering:1; /* True if this is a covering index */
+ unsigned noSkipScan:1; /* Do not try to use skip-scan if true */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
int nSample; /* Number of elements in aSample[] */
int nSampleCol; /* Size of IndexSample.anEq[] and so on */
tRowcnt *aAvgEq; /* Average nEq values for keys not in aSample */
IndexSample *aSample; /* Samples of the left-most key */
- tRowcnt *aiRowEst; /* Non-logarithmic stat1 data for this table */
+ tRowcnt *aiRowEst; /* Non-logarithmic stat1 data for this index */
+ tRowcnt nRowEst0; /* Non-logarithmic number of rows in the index */
#endif
};
int iTable; /* TK_COLUMN: cursor number of table holding column
** TK_REGISTER: register number
** TK_TRIGGER: 1 -> new, 0 -> old
- ** EP_Unlikely: 1000 times likelihood */
+ ** EP_Unlikely: 134217728 times likelihood */
ynVar iColumn; /* TK_COLUMN: column index. -1 for rowid.
** TK_VARIABLE: variable number (always >= 1). */
i16 iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
/*
** The following are the meanings of bits in the Expr.flags field.
*/
-#define EP_FromJoin 0x000001 /* Originated in ON or USING clause of a join */
+#define EP_FromJoin 0x000001 /* Originates in ON/USING clause of outer join */
#define EP_Agg 0x000002 /* Contains one or more aggregate functions */
#define EP_Resolved 0x000004 /* IDs have been resolved to COLUMNs */
#define EP_Error 0x000008 /* Expression contains one or more errors */
#define EP_MemToken 0x010000 /* Need to sqlite3DbFree() Expr.zToken */
#define EP_NoReduce 0x020000 /* Cannot EXPRDUP_REDUCE this Expr */
#define EP_Unlikely 0x040000 /* unlikely() or likelihood() function */
-#define EP_Constant 0x080000 /* Node is a constant */
+#define EP_ConstFunc 0x080000 /* Node is a SQLITE_FUNC_CONSTANT function */
+#define EP_CanBeNull 0x100000 /* Can be null despite NOT NULL constraint */
+#define EP_Subquery 0x200000 /* Tree contains a TK_SELECT operator */
+
+/*
+** Combinations of two or more EP_* flags
+*/
+#define EP_Propagate (EP_Collate|EP_Subquery) /* Propagate these bits up tree */
/*
** These macros can be used to test, set, or clear bits in the
#define WHERE_OMIT_OPEN_CLOSE 0x0010 /* Table cursors are already open */
#define WHERE_FORCE_TABLE 0x0020 /* Do not use an index-only search */
#define WHERE_ONETABLE_ONLY 0x0040 /* Only code the 1st table in pTabList */
- /* 0x0080 // not currently used */
+#define WHERE_NO_AUTOINDEX 0x0080 /* Disallow automatic indexes */
#define WHERE_GROUPBY 0x0100 /* pOrderBy is really a GROUP BY */
#define WHERE_DISTINCTBY 0x0200 /* pOrderby is really a DISTINCT clause */
#define WHERE_WANT_DISTINCT 0x0400 /* All output needs to be distinct */
#define SF_HasTypeInfo 0x0020 /* FROM subqueries have Table metadata */
#define SF_Compound 0x0040 /* Part of a compound query */
#define SF_Values 0x0080 /* Synthesized from VALUES clause */
- /* 0x0100 NOT USED */
+#define SF_AllValues 0x0100 /* All terms of compound are VALUES */
#define SF_NestedFrom 0x0200 /* Part of a parenthesized FROM clause */
#define SF_MaybeConvert 0x0400 /* Need convertCompoundSelectToSubquery() */
#define SF_Recursive 0x0800 /* The recursive part of a recursive CTE */
#define SF_MinMaxAgg 0x1000 /* Aggregate containing min() or max() */
+#define SF_Converted 0x2000 /* By convertCompoundSelectToSubquery() */
/*
#define OPFLAG_LENGTHARG 0x40 /* OP_Column only used for length() */
#define OPFLAG_TYPEOFARG 0x80 /* OP_Column only used for typeof() */
#define OPFLAG_BULKCSR 0x01 /* OP_Open** used to open bulk cursor */
-#define OPFLAG_P2ISREG 0x02 /* P2 to OP_Open** is a register number */
+#define OPFLAG_SEEKEQ 0x02 /* OP_Open** cursor uses EQ seek only */
+#define OPFLAG_P2ISREG 0x04 /* P2 to OP_Open** is a register number */
#define OPFLAG_PERMUTE 0x01 /* OP_Compare: use the permutation */
/*
int nPage; /* Number of pages in pPage[] */
int mxParserStack; /* maximum depth of the parser stack */
int sharedCacheEnabled; /* true if shared-cache mode enabled */
+ u32 szPma; /* Maximum Sorter PMA size */
/* The above might be initialized to non-zero. The following need to always
** initially be zero, however. */
int isInit; /* True after initialization has finished */
void (*xSelectCallback2)(Walker*,Select*);/* Second callback for SELECTs */
Parse *pParse; /* Parser context. */
int walkerDepth; /* Number of subqueries */
+ u8 eCode; /* A small processing code */
union { /* Extra data for callback */
NameContext *pNC; /* Naming context */
- int i; /* Integer value */
+ int n; /* A counter */
+ int iCur; /* A cursor number */
SrcList *pSrcList; /* FROM clause */
struct SrcCount *pSrcCount; /* Counting column references */
} u;
** the SQLITE_ENABLE_FTS4 macro to serve as an alias for SQLITE_ENABLE_FTS3.
*/
#if defined(SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3)
-# define SQLITE_ENABLE_FTS3
+# define SQLITE_ENABLE_FTS3 1
#endif
/*
SQLITE_PRIVATE int sqlite3MutexEnd(void);
#endif
-SQLITE_PRIVATE int sqlite3StatusValue(int);
-SQLITE_PRIVATE void sqlite3StatusAdd(int, int);
+SQLITE_PRIVATE sqlite3_int64 sqlite3StatusValue(int);
+SQLITE_PRIVATE void sqlite3StatusUp(int, int);
+SQLITE_PRIVATE void sqlite3StatusDown(int, int);
SQLITE_PRIVATE void sqlite3StatusSet(int, int);
+/* Access to mutexes used by sqlite3_status() */
+SQLITE_PRIVATE sqlite3_mutex *sqlite3Pcache1Mutex(void);
+SQLITE_PRIVATE sqlite3_mutex *sqlite3MallocMutex(void);
+
#ifndef SQLITE_OMIT_FLOATING_POINT
SQLITE_PRIVATE int sqlite3IsNaN(double);
#else
SQLITE_PRIVATE void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int);
SQLITE_PRIVATE void sqlite3ExprListSetSpan(Parse*,ExprList*,ExprSpan*);
SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3*, ExprList*);
+SQLITE_PRIVATE u32 sqlite3ExprListFlags(const ExprList*);
SQLITE_PRIVATE int sqlite3Init(sqlite3*, char**);
SQLITE_PRIVATE int sqlite3InitCallback(void*, int, char**, char**);
SQLITE_PRIVATE void sqlite3Pragma(Parse*,Token*,Token*,Token*,int);
SQLITE_PRIVATE int sqlite3ExprIsConstant(Expr*);
SQLITE_PRIVATE int sqlite3ExprIsConstantNotJoin(Expr*);
SQLITE_PRIVATE int sqlite3ExprIsConstantOrFunction(Expr*, u8);
+SQLITE_PRIVATE int sqlite3ExprIsTableConstant(Expr*,int);
SQLITE_PRIVATE int sqlite3ExprIsInteger(Expr*, int*);
SQLITE_PRIVATE int sqlite3ExprCanBeNull(const Expr*);
SQLITE_PRIVATE int sqlite3ExprNeedsNoAffinityChange(const Expr*, char);
SQLITE_PRIVATE CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int);
SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName);
SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
-SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*);
+SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int);
SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*);
SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr*);
SQLITE_PRIVATE int sqlite3CheckCollSeq(Parse *, CollSeq *);
SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, char*, int, int);
SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum*,const char*,int);
SQLITE_PRIVATE void sqlite3StrAccumAppendAll(StrAccum*,const char*);
-SQLITE_PRIVATE void sqlite3AppendSpace(StrAccum*,int);
+SQLITE_PRIVATE void sqlite3AppendChar(StrAccum*,int,char);
SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum*);
SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum*);
SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest*,int,int);
SQLITE_PRIVATE int sqlite3MemJournalSize(void);
SQLITE_PRIVATE int sqlite3IsMemJournal(sqlite3_file *);
+SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p);
#if SQLITE_MAX_EXPR_DEPTH>0
-SQLITE_PRIVATE void sqlite3ExprSetHeight(Parse *pParse, Expr *p);
SQLITE_PRIVATE int sqlite3SelectExprHeight(Select *);
SQLITE_PRIVATE int sqlite3ExprCheckHeight(Parse*, int);
#else
- #define sqlite3ExprSetHeight(x,y)
#define sqlite3SelectExprHeight(x) 0
#define sqlite3ExprCheckHeight(x,y)
#endif
#ifdef SQLITE_ENABLE_IOTRACE
# define IOTRACE(A) if( sqlite3IoTrace ){ sqlite3IoTrace A; }
SQLITE_PRIVATE void sqlite3VdbeIOTraceSql(Vdbe*);
-SQLITE_PRIVATE void (*sqlite3IoTrace)(const char*,...);
+SQLITE_API SQLITE_EXTERN void (SQLITE_CDECL *sqlite3IoTrace)(const char*,...);
#else
# define IOTRACE(A)
# define sqlite3VdbeIOTraceSql(X)
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, /* 3x */
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, /* 4x */
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, /* 5x */
- 96, 97, 66, 67, 68, 69, 70, 71, 72, 73,106,107,108,109,110,111, /* 6x */
- 112, 81, 82, 83, 84, 85, 86, 87, 88, 89,122,123,124,125,126,127, /* 7x */
+ 96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111, /* 6x */
+ 112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127, /* 7x */
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, /* 8x */
- 144,145,146,147,148,149,150,151,152,153,154,155,156,157,156,159, /* 9x */
+ 144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159, /* 9x */
160,161,162,163,164,165,166,167,168,169,170,171,140,141,142,175, /* Ax */
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191, /* Bx */
192,129,130,131,132,133,134,135,136,137,202,203,204,205,206,207, /* Cx */
208,145,146,147,148,149,150,151,152,153,218,219,220,221,222,223, /* Dx */
- 224,225,162,163,164,165,166,167,168,169,232,203,204,205,206,207, /* Ex */
- 239,240,241,242,243,244,245,246,247,248,249,219,220,221,222,255, /* Fx */
+ 224,225,162,163,164,165,166,167,168,169,234,235,236,237,238,239, /* Ex */
+ 240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255, /* Fx */
#endif
};
**
** EVIDENCE-OF: R-38799-08373 URI filenames can be enabled or disabled
** using the SQLITE_USE_URI=1 or SQLITE_USE_URI=0 compile-time options.
+**
+** EVIDENCE-OF: R-43642-56306 By default, URI handling is globally
+** disabled. The default value may be changed by compiling with the
+** SQLITE_USE_URI symbol defined.
*/
#ifndef SQLITE_USE_URI
# define SQLITE_USE_URI 0
#endif
+/* EVIDENCE-OF: R-38720-18127 The default setting is determined by the
+** SQLITE_ALLOW_COVERING_INDEX_SCAN compile-time option, or is "on" if
+** that compile-time option is omitted.
+*/
#ifndef SQLITE_ALLOW_COVERING_INDEX_SCAN
# define SQLITE_ALLOW_COVERING_INDEX_SCAN 1
#endif
+/* The minimum PMA size is set to this value multiplied by the database
+** page size in bytes.
+*/
+#ifndef SQLITE_SORTER_PMASZ
+# define SQLITE_SORTER_PMASZ 250
+#endif
+
/*
** The following singleton contains the global configuration for
** the SQLite library.
0, /* nPage */
0, /* mxParserStack */
0, /* sharedCacheEnabled */
+ SQLITE_SORTER_PMASZ, /* szPma */
/* All the rest should always be initialized to zero */
0, /* isInit */
0, /* inProgress */
**
** IMPORTANT: Changing the pending byte to any value other than
** 0x40000000 results in an incompatible database file format!
-** Changing the pending byte during operating results in undefined
-** and dileterious behavior.
+** Changing the pending byte during operation will result in undefined
+** and incorrect behavior.
*/
#ifndef SQLITE_OMIT_WSD
SQLITE_PRIVATE int sqlite3PendingByte = 0x40000000;
#define CTIMEOPT_VAL_(opt) #opt
#define CTIMEOPT_VAL(opt) CTIMEOPT_VAL_(opt)
-#ifdef SQLITE_32BIT_ROWID
+#if SQLITE_32BIT_ROWID
"32BIT_ROWID",
#endif
-#ifdef SQLITE_4_BYTE_ALIGNED_MALLOC
+#if SQLITE_4_BYTE_ALIGNED_MALLOC
"4_BYTE_ALIGNED_MALLOC",
#endif
-#ifdef SQLITE_CASE_SENSITIVE_LIKE
+#if SQLITE_CASE_SENSITIVE_LIKE
"CASE_SENSITIVE_LIKE",
#endif
-#ifdef SQLITE_CHECK_PAGES
+#if SQLITE_CHECK_PAGES
"CHECK_PAGES",
#endif
-#ifdef SQLITE_COVERAGE_TEST
+#if SQLITE_COVERAGE_TEST
"COVERAGE_TEST",
#endif
-#ifdef SQLITE_DEBUG
+#if SQLITE_DEBUG
"DEBUG",
#endif
-#ifdef SQLITE_DEFAULT_LOCKING_MODE
+#if SQLITE_DEFAULT_LOCKING_MODE
"DEFAULT_LOCKING_MODE=" CTIMEOPT_VAL(SQLITE_DEFAULT_LOCKING_MODE),
#endif
#if defined(SQLITE_DEFAULT_MMAP_SIZE) && !defined(SQLITE_DEFAULT_MMAP_SIZE_xc)
"DEFAULT_MMAP_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_MMAP_SIZE),
#endif
-#ifdef SQLITE_DISABLE_DIRSYNC
+#if SQLITE_DISABLE_DIRSYNC
"DISABLE_DIRSYNC",
#endif
-#ifdef SQLITE_DISABLE_LFS
+#if SQLITE_DISABLE_LFS
"DISABLE_LFS",
#endif
-#ifdef SQLITE_ENABLE_ATOMIC_WRITE
+#if SQLITE_ENABLE_API_ARMOR
+ "ENABLE_API_ARMOR",
+#endif
+#if SQLITE_ENABLE_ATOMIC_WRITE
"ENABLE_ATOMIC_WRITE",
#endif
-#ifdef SQLITE_ENABLE_CEROD
+#if SQLITE_ENABLE_CEROD
"ENABLE_CEROD",
#endif
-#ifdef SQLITE_ENABLE_COLUMN_METADATA
+#if SQLITE_ENABLE_COLUMN_METADATA
"ENABLE_COLUMN_METADATA",
#endif
-#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT
+#if SQLITE_ENABLE_EXPENSIVE_ASSERT
"ENABLE_EXPENSIVE_ASSERT",
#endif
-#ifdef SQLITE_ENABLE_FTS1
+#if SQLITE_ENABLE_FTS1
"ENABLE_FTS1",
#endif
-#ifdef SQLITE_ENABLE_FTS2
+#if SQLITE_ENABLE_FTS2
"ENABLE_FTS2",
#endif
-#ifdef SQLITE_ENABLE_FTS3
+#if SQLITE_ENABLE_FTS3
"ENABLE_FTS3",
#endif
-#ifdef SQLITE_ENABLE_FTS3_PARENTHESIS
+#if SQLITE_ENABLE_FTS3_PARENTHESIS
"ENABLE_FTS3_PARENTHESIS",
#endif
-#ifdef SQLITE_ENABLE_FTS4
+#if SQLITE_ENABLE_FTS4
"ENABLE_FTS4",
#endif
-#ifdef SQLITE_ENABLE_ICU
+#if SQLITE_ENABLE_ICU
"ENABLE_ICU",
#endif
-#ifdef SQLITE_ENABLE_IOTRACE
+#if SQLITE_ENABLE_IOTRACE
"ENABLE_IOTRACE",
#endif
-#ifdef SQLITE_ENABLE_LOAD_EXTENSION
+#if SQLITE_ENABLE_LOAD_EXTENSION
"ENABLE_LOAD_EXTENSION",
#endif
-#ifdef SQLITE_ENABLE_LOCKING_STYLE
+#if SQLITE_ENABLE_LOCKING_STYLE
"ENABLE_LOCKING_STYLE=" CTIMEOPT_VAL(SQLITE_ENABLE_LOCKING_STYLE),
#endif
-#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
+#if SQLITE_ENABLE_MEMORY_MANAGEMENT
"ENABLE_MEMORY_MANAGEMENT",
#endif
-#ifdef SQLITE_ENABLE_MEMSYS3
+#if SQLITE_ENABLE_MEMSYS3
"ENABLE_MEMSYS3",
#endif
-#ifdef SQLITE_ENABLE_MEMSYS5
+#if SQLITE_ENABLE_MEMSYS5
"ENABLE_MEMSYS5",
#endif
-#ifdef SQLITE_ENABLE_OVERSIZE_CELL_CHECK
+#if SQLITE_ENABLE_OVERSIZE_CELL_CHECK
"ENABLE_OVERSIZE_CELL_CHECK",
#endif
-#ifdef SQLITE_ENABLE_RTREE
+#if SQLITE_ENABLE_RTREE
"ENABLE_RTREE",
#endif
#if defined(SQLITE_ENABLE_STAT4)
#elif defined(SQLITE_ENABLE_STAT3)
"ENABLE_STAT3",
#endif
-#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY
+#if SQLITE_ENABLE_UNLOCK_NOTIFY
"ENABLE_UNLOCK_NOTIFY",
#endif
-#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT
+#if SQLITE_ENABLE_UPDATE_DELETE_LIMIT
"ENABLE_UPDATE_DELETE_LIMIT",
#endif
-#ifdef SQLITE_HAS_CODEC
+#if SQLITE_HAS_CODEC
"HAS_CODEC",
#endif
-#ifdef SQLITE_HAVE_ISNAN
+#if HAVE_ISNAN || SQLITE_HAVE_ISNAN
"HAVE_ISNAN",
#endif
-#ifdef SQLITE_HOMEGROWN_RECURSIVE_MUTEX
+#if SQLITE_HOMEGROWN_RECURSIVE_MUTEX
"HOMEGROWN_RECURSIVE_MUTEX",
#endif
-#ifdef SQLITE_IGNORE_AFP_LOCK_ERRORS
+#if SQLITE_IGNORE_AFP_LOCK_ERRORS
"IGNORE_AFP_LOCK_ERRORS",
#endif
-#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS
+#if SQLITE_IGNORE_FLOCK_LOCK_ERRORS
"IGNORE_FLOCK_LOCK_ERRORS",
#endif
#ifdef SQLITE_INT64_TYPE
"INT64_TYPE",
#endif
-#ifdef SQLITE_LOCK_TRACE
+#if SQLITE_LOCK_TRACE
"LOCK_TRACE",
#endif
#if defined(SQLITE_MAX_MMAP_SIZE) && !defined(SQLITE_MAX_MMAP_SIZE_xc)
#ifdef SQLITE_MAX_SCHEMA_RETRY
"MAX_SCHEMA_RETRY=" CTIMEOPT_VAL(SQLITE_MAX_SCHEMA_RETRY),
#endif
-#ifdef SQLITE_MEMDEBUG
+#if SQLITE_MEMDEBUG
"MEMDEBUG",
#endif
-#ifdef SQLITE_MIXED_ENDIAN_64BIT_FLOAT
+#if SQLITE_MIXED_ENDIAN_64BIT_FLOAT
"MIXED_ENDIAN_64BIT_FLOAT",
#endif
-#ifdef SQLITE_NO_SYNC
+#if SQLITE_NO_SYNC
"NO_SYNC",
#endif
-#ifdef SQLITE_OMIT_ALTERTABLE
+#if SQLITE_OMIT_ALTERTABLE
"OMIT_ALTERTABLE",
#endif
-#ifdef SQLITE_OMIT_ANALYZE
+#if SQLITE_OMIT_ANALYZE
"OMIT_ANALYZE",
#endif
-#ifdef SQLITE_OMIT_ATTACH
+#if SQLITE_OMIT_ATTACH
"OMIT_ATTACH",
#endif
-#ifdef SQLITE_OMIT_AUTHORIZATION
+#if SQLITE_OMIT_AUTHORIZATION
"OMIT_AUTHORIZATION",
#endif
-#ifdef SQLITE_OMIT_AUTOINCREMENT
+#if SQLITE_OMIT_AUTOINCREMENT
"OMIT_AUTOINCREMENT",
#endif
-#ifdef SQLITE_OMIT_AUTOINIT
+#if SQLITE_OMIT_AUTOINIT
"OMIT_AUTOINIT",
#endif
-#ifdef SQLITE_OMIT_AUTOMATIC_INDEX
+#if SQLITE_OMIT_AUTOMATIC_INDEX
"OMIT_AUTOMATIC_INDEX",
#endif
-#ifdef SQLITE_OMIT_AUTORESET
+#if SQLITE_OMIT_AUTORESET
"OMIT_AUTORESET",
#endif
-#ifdef SQLITE_OMIT_AUTOVACUUM
+#if SQLITE_OMIT_AUTOVACUUM
"OMIT_AUTOVACUUM",
#endif
-#ifdef SQLITE_OMIT_BETWEEN_OPTIMIZATION
+#if SQLITE_OMIT_BETWEEN_OPTIMIZATION
"OMIT_BETWEEN_OPTIMIZATION",
#endif
-#ifdef SQLITE_OMIT_BLOB_LITERAL
+#if SQLITE_OMIT_BLOB_LITERAL
"OMIT_BLOB_LITERAL",
#endif
-#ifdef SQLITE_OMIT_BTREECOUNT
+#if SQLITE_OMIT_BTREECOUNT
"OMIT_BTREECOUNT",
#endif
-#ifdef SQLITE_OMIT_BUILTIN_TEST
+#if SQLITE_OMIT_BUILTIN_TEST
"OMIT_BUILTIN_TEST",
#endif
-#ifdef SQLITE_OMIT_CAST
+#if SQLITE_OMIT_CAST
"OMIT_CAST",
#endif
-#ifdef SQLITE_OMIT_CHECK
+#if SQLITE_OMIT_CHECK
"OMIT_CHECK",
#endif
-#ifdef SQLITE_OMIT_COMPLETE
+#if SQLITE_OMIT_COMPLETE
"OMIT_COMPLETE",
#endif
-#ifdef SQLITE_OMIT_COMPOUND_SELECT
+#if SQLITE_OMIT_COMPOUND_SELECT
"OMIT_COMPOUND_SELECT",
#endif
-#ifdef SQLITE_OMIT_CTE
+#if SQLITE_OMIT_CTE
"OMIT_CTE",
#endif
-#ifdef SQLITE_OMIT_DATETIME_FUNCS
+#if SQLITE_OMIT_DATETIME_FUNCS
"OMIT_DATETIME_FUNCS",
#endif
-#ifdef SQLITE_OMIT_DECLTYPE
+#if SQLITE_OMIT_DECLTYPE
"OMIT_DECLTYPE",
#endif
-#ifdef SQLITE_OMIT_DEPRECATED
+#if SQLITE_OMIT_DEPRECATED
"OMIT_DEPRECATED",
#endif
-#ifdef SQLITE_OMIT_DISKIO
+#if SQLITE_OMIT_DISKIO
"OMIT_DISKIO",
#endif
-#ifdef SQLITE_OMIT_EXPLAIN
+#if SQLITE_OMIT_EXPLAIN
"OMIT_EXPLAIN",
#endif
-#ifdef SQLITE_OMIT_FLAG_PRAGMAS
+#if SQLITE_OMIT_FLAG_PRAGMAS
"OMIT_FLAG_PRAGMAS",
#endif
-#ifdef SQLITE_OMIT_FLOATING_POINT
+#if SQLITE_OMIT_FLOATING_POINT
"OMIT_FLOATING_POINT",
#endif
-#ifdef SQLITE_OMIT_FOREIGN_KEY
+#if SQLITE_OMIT_FOREIGN_KEY
"OMIT_FOREIGN_KEY",
#endif
-#ifdef SQLITE_OMIT_GET_TABLE
+#if SQLITE_OMIT_GET_TABLE
"OMIT_GET_TABLE",
#endif
-#ifdef SQLITE_OMIT_INCRBLOB
+#if SQLITE_OMIT_INCRBLOB
"OMIT_INCRBLOB",
#endif
-#ifdef SQLITE_OMIT_INTEGRITY_CHECK
+#if SQLITE_OMIT_INTEGRITY_CHECK
"OMIT_INTEGRITY_CHECK",
#endif
-#ifdef SQLITE_OMIT_LIKE_OPTIMIZATION
+#if SQLITE_OMIT_LIKE_OPTIMIZATION
"OMIT_LIKE_OPTIMIZATION",
#endif
-#ifdef SQLITE_OMIT_LOAD_EXTENSION
+#if SQLITE_OMIT_LOAD_EXTENSION
"OMIT_LOAD_EXTENSION",
#endif
-#ifdef SQLITE_OMIT_LOCALTIME
+#if SQLITE_OMIT_LOCALTIME
"OMIT_LOCALTIME",
#endif
-#ifdef SQLITE_OMIT_LOOKASIDE
+#if SQLITE_OMIT_LOOKASIDE
"OMIT_LOOKASIDE",
#endif
-#ifdef SQLITE_OMIT_MEMORYDB
+#if SQLITE_OMIT_MEMORYDB
"OMIT_MEMORYDB",
#endif
-#ifdef SQLITE_OMIT_OR_OPTIMIZATION
+#if SQLITE_OMIT_OR_OPTIMIZATION
"OMIT_OR_OPTIMIZATION",
#endif
-#ifdef SQLITE_OMIT_PAGER_PRAGMAS
+#if SQLITE_OMIT_PAGER_PRAGMAS
"OMIT_PAGER_PRAGMAS",
#endif
-#ifdef SQLITE_OMIT_PRAGMA
+#if SQLITE_OMIT_PRAGMA
"OMIT_PRAGMA",
#endif
-#ifdef SQLITE_OMIT_PROGRESS_CALLBACK
+#if SQLITE_OMIT_PROGRESS_CALLBACK
"OMIT_PROGRESS_CALLBACK",
#endif
-#ifdef SQLITE_OMIT_QUICKBALANCE
+#if SQLITE_OMIT_QUICKBALANCE
"OMIT_QUICKBALANCE",
#endif
-#ifdef SQLITE_OMIT_REINDEX
+#if SQLITE_OMIT_REINDEX
"OMIT_REINDEX",
#endif
-#ifdef SQLITE_OMIT_SCHEMA_PRAGMAS
+#if SQLITE_OMIT_SCHEMA_PRAGMAS
"OMIT_SCHEMA_PRAGMAS",
#endif
-#ifdef SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS
+#if SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS
"OMIT_SCHEMA_VERSION_PRAGMAS",
#endif
-#ifdef SQLITE_OMIT_SHARED_CACHE
+#if SQLITE_OMIT_SHARED_CACHE
"OMIT_SHARED_CACHE",
#endif
-#ifdef SQLITE_OMIT_SUBQUERY
+#if SQLITE_OMIT_SUBQUERY
"OMIT_SUBQUERY",
#endif
-#ifdef SQLITE_OMIT_TCL_VARIABLE
+#if SQLITE_OMIT_TCL_VARIABLE
"OMIT_TCL_VARIABLE",
#endif
-#ifdef SQLITE_OMIT_TEMPDB
+#if SQLITE_OMIT_TEMPDB
"OMIT_TEMPDB",
#endif
-#ifdef SQLITE_OMIT_TRACE
+#if SQLITE_OMIT_TRACE
"OMIT_TRACE",
#endif
-#ifdef SQLITE_OMIT_TRIGGER
+#if SQLITE_OMIT_TRIGGER
"OMIT_TRIGGER",
#endif
-#ifdef SQLITE_OMIT_TRUNCATE_OPTIMIZATION
+#if SQLITE_OMIT_TRUNCATE_OPTIMIZATION
"OMIT_TRUNCATE_OPTIMIZATION",
#endif
-#ifdef SQLITE_OMIT_UTF16
+#if SQLITE_OMIT_UTF16
"OMIT_UTF16",
#endif
-#ifdef SQLITE_OMIT_VACUUM
+#if SQLITE_OMIT_VACUUM
"OMIT_VACUUM",
#endif
-#ifdef SQLITE_OMIT_VIEW
+#if SQLITE_OMIT_VIEW
"OMIT_VIEW",
#endif
-#ifdef SQLITE_OMIT_VIRTUALTABLE
+#if SQLITE_OMIT_VIRTUALTABLE
"OMIT_VIRTUALTABLE",
#endif
-#ifdef SQLITE_OMIT_WAL
+#if SQLITE_OMIT_WAL
"OMIT_WAL",
#endif
-#ifdef SQLITE_OMIT_WSD
+#if SQLITE_OMIT_WSD
"OMIT_WSD",
#endif
-#ifdef SQLITE_OMIT_XFER_OPT
+#if SQLITE_OMIT_XFER_OPT
"OMIT_XFER_OPT",
#endif
-#ifdef SQLITE_PERFORMANCE_TRACE
+#if SQLITE_PERFORMANCE_TRACE
"PERFORMANCE_TRACE",
#endif
-#ifdef SQLITE_PROXY_DEBUG
+#if SQLITE_PROXY_DEBUG
"PROXY_DEBUG",
#endif
-#ifdef SQLITE_RTREE_INT_ONLY
+#if SQLITE_RTREE_INT_ONLY
"RTREE_INT_ONLY",
#endif
-#ifdef SQLITE_SECURE_DELETE
+#if SQLITE_SECURE_DELETE
"SECURE_DELETE",
#endif
-#ifdef SQLITE_SMALL_STACK
+#if SQLITE_SMALL_STACK
"SMALL_STACK",
#endif
-#ifdef SQLITE_SOUNDEX
+#if SQLITE_SOUNDEX
"SOUNDEX",
#endif
-#ifdef SQLITE_SYSTEM_MALLOC
+#if SQLITE_SYSTEM_MALLOC
"SYSTEM_MALLOC",
#endif
-#ifdef SQLITE_TCL
+#if SQLITE_TCL
"TCL",
#endif
#if defined(SQLITE_TEMP_STORE) && !defined(SQLITE_TEMP_STORE_xc)
"TEMP_STORE=" CTIMEOPT_VAL(SQLITE_TEMP_STORE),
#endif
-#ifdef SQLITE_TEST
+#if SQLITE_TEST
"TEST",
#endif
#if defined(SQLITE_THREADSAFE)
"THREADSAFE=" CTIMEOPT_VAL(SQLITE_THREADSAFE),
#endif
-#ifdef SQLITE_USE_ALLOCA
+#if SQLITE_USE_ALLOCA
"USE_ALLOCA",
#endif
-#ifdef SQLITE_USER_AUTHENTICATION
+#if SQLITE_USER_AUTHENTICATION
"USER_AUTHENTICATION",
#endif
-#ifdef SQLITE_WIN32_MALLOC
+#if SQLITE_WIN32_MALLOC
"WIN32_MALLOC",
#endif
-#ifdef SQLITE_ZERO_MALLOC
+#if SQLITE_ZERO_MALLOC
"ZERO_MALLOC"
#endif
};
** The name can optionally begin with "SQLITE_" but the "SQLITE_" prefix
** is not required for a match.
*/
-SQLITE_API int sqlite3_compileoption_used(const char *zOptName){
+SQLITE_API int SQLITE_STDCALL sqlite3_compileoption_used(const char *zOptName){
int i, n;
+
+#if SQLITE_ENABLE_API_ARMOR
+ if( zOptName==0 ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
if( sqlite3StrNICmp(zOptName, "SQLITE_", 7)==0 ) zOptName += 7;
n = sqlite3Strlen30(zOptName);
** Return the N-th compile-time option string. If N is out of range,
** return a NULL pointer.
*/
-SQLITE_API const char *sqlite3_compileoption_get(int N){
+SQLITE_API const char *SQLITE_STDCALL sqlite3_compileoption_get(int N){
if( N>=0 && N<ArraySize(azCompileOpt) ){
return azCompileOpt[N];
}
Vdbe *v; /* VM this frame belongs to */
VdbeFrame *pParent; /* Parent of this frame, or NULL if parent is main */
Op *aOp; /* Program instructions for parent frame */
+ i64 *anExec; /* Event counters from parent frame */
Mem *aMem; /* Array of memory cells for parent frame */
u8 *aOnceFlag; /* Array of OP_Once flags for parent frame */
VdbeCursor **apCsr; /* Array of Vdbe cursors for parent frame */
int nOnceFlag; /* Number of entries in aOnceFlag */
int nChildMem; /* Number of memory cells for child frame */
int nChildCsr; /* Number of cursors for child frame */
- int nChange; /* Statement changes (Vdbe.nChanges) */
+ int nChange; /* Statement changes (Vdbe.nChange) */
+ int nDbChange; /* Value of db->nChange */
};
#define VdbeFrameMem(p) ((Mem *)&((u8 *)p)[ROUND8(sizeof(VdbeFrame))])
*/
typedef unsigned bft; /* Bit Field Type */
+typedef struct ScanStatus ScanStatus;
+struct ScanStatus {
+ int addrExplain; /* OP_Explain for loop */
+ int addrLoop; /* Address of "loops" counter */
+ int addrVisit; /* Address of "rows visited" counter */
+ int iSelectID; /* The "Select-ID" for this loop */
+ LogEst nEst; /* Estimated output rows per loop */
+ char *zName; /* Name of table or index */
+};
+
/*
** An instance of the virtual machine. This structure contains the complete
** state of the virtual machine.
**
** The "sqlite3_stmt" structure pointer that is returned by sqlite3_prepare()
** is really a pointer to an instance of this structure.
-**
-** The Vdbe.inVtabMethod variable is set to non-zero for the duration of
-** any virtual table method invocations made by the vdbe program. It is
-** set to 2 for xDestroy method calls and 1 for all other methods. This
-** variable is used for two purposes: to allow xDestroy methods to execute
-** "DROP TABLE" statements and to prevent some nasty side effects of
-** malloc failure when SQLite is invoked recursively by a virtual table
-** method function.
*/
struct Vdbe {
sqlite3 *db; /* The database connection that owns this statement */
u32 cacheCtr; /* VdbeCursor row cache generation counter */
int pc; /* The program counter */
int rc; /* Value to return */
+#ifdef SQLITE_DEBUG
+ int rcApp; /* errcode set by sqlite3_result_error_code() */
+#endif
u16 nResColumn; /* Number of columns in one row of the result set */
u8 errorAction; /* Recovery action to do in case of an error */
u8 minWriteFileFormat; /* Minimum file format for writable database files */
bft explain:2; /* True if EXPLAIN present on SQL command */
- bft inVtabMethod:2; /* See comments above */
bft changeCntOn:1; /* True to update the change-counter */
bft expired:1; /* True if the VM needs to be recompiled */
bft runOnlyOnce:1; /* Automatically expire on reset */
int nOnceFlag; /* Size of array aOnceFlag[] */
u8 *aOnceFlag; /* Flags for OP_Once */
AuxData *pAuxData; /* Linked list of auxdata allocations */
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+ i64 *anExec; /* Number of times each op has been executed */
+ int nScan; /* Entries in aScan[] */
+ ScanStatus *aScan; /* Scan definitions for sqlite3_stmt_scanstatus() */
+#endif
};
/*
*/
typedef struct sqlite3StatType sqlite3StatType;
static SQLITE_WSD struct sqlite3StatType {
- int nowValue[10]; /* Current value */
- int mxValue[10]; /* Maximum value */
+#if SQLITE_PTRSIZE>4
+ sqlite3_int64 nowValue[10]; /* Current value */
+ sqlite3_int64 mxValue[10]; /* Maximum value */
+#else
+ u32 nowValue[10]; /* Current value */
+ u32 mxValue[10]; /* Maximum value */
+#endif
} sqlite3Stat = { {0,}, {0,} };
+/*
+** Elements of sqlite3Stat[] are protected by either the memory allocator
+** mutex, or by the pcache1 mutex. The following array determines which.
+*/
+static const char statMutex[] = {
+ 0, /* SQLITE_STATUS_MEMORY_USED */
+ 1, /* SQLITE_STATUS_PAGECACHE_USED */
+ 1, /* SQLITE_STATUS_PAGECACHE_OVERFLOW */
+ 0, /* SQLITE_STATUS_SCRATCH_USED */
+ 0, /* SQLITE_STATUS_SCRATCH_OVERFLOW */
+ 0, /* SQLITE_STATUS_MALLOC_SIZE */
+ 0, /* SQLITE_STATUS_PARSER_STACK */
+ 1, /* SQLITE_STATUS_PAGECACHE_SIZE */
+ 0, /* SQLITE_STATUS_SCRATCH_SIZE */
+ 0, /* SQLITE_STATUS_MALLOC_COUNT */
+};
+
/* The "wsdStat" macro will resolve to the status information
** state vector. If writable static data is unsupported on the target,
#endif
/*
-** Return the current value of a status parameter.
+** Return the current value of a status parameter. The caller must
+** be holding the appropriate mutex.
*/
-SQLITE_PRIVATE int sqlite3StatusValue(int op){
+SQLITE_PRIVATE sqlite3_int64 sqlite3StatusValue(int op){
wsdStatInit;
assert( op>=0 && op<ArraySize(wsdStat.nowValue) );
+ assert( op>=0 && op<ArraySize(statMutex) );
+ assert( sqlite3_mutex_held(statMutex[op] ? sqlite3Pcache1Mutex()
+ : sqlite3MallocMutex()) );
return wsdStat.nowValue[op];
}
/*
-** Add N to the value of a status record. It is assumed that the
-** caller holds appropriate locks.
+** Add N to the value of a status record. The caller must hold the
+** appropriate mutex. (Locking is checked by assert()).
+**
+** The StatusUp() routine can accept positive or negative values for N.
+** The value of N is added to the current status value and the high-water
+** mark is adjusted if necessary.
+**
+** The StatusDown() routine lowers the current value by N. The highwater
+** mark is unchanged. N must be non-negative for StatusDown().
*/
-SQLITE_PRIVATE void sqlite3StatusAdd(int op, int N){
+SQLITE_PRIVATE void sqlite3StatusUp(int op, int N){
wsdStatInit;
assert( op>=0 && op<ArraySize(wsdStat.nowValue) );
+ assert( op>=0 && op<ArraySize(statMutex) );
+ assert( sqlite3_mutex_held(statMutex[op] ? sqlite3Pcache1Mutex()
+ : sqlite3MallocMutex()) );
wsdStat.nowValue[op] += N;
if( wsdStat.nowValue[op]>wsdStat.mxValue[op] ){
wsdStat.mxValue[op] = wsdStat.nowValue[op];
}
}
+SQLITE_PRIVATE void sqlite3StatusDown(int op, int N){
+ wsdStatInit;
+ assert( N>=0 );
+ assert( op>=0 && op<ArraySize(statMutex) );
+ assert( sqlite3_mutex_held(statMutex[op] ? sqlite3Pcache1Mutex()
+ : sqlite3MallocMutex()) );
+ assert( op>=0 && op<ArraySize(wsdStat.nowValue) );
+ wsdStat.nowValue[op] -= N;
+}
/*
-** Set the value of a status to X.
+** Set the value of a status to X. The highwater mark is adjusted if
+** necessary. The caller must hold the appropriate mutex.
*/
SQLITE_PRIVATE void sqlite3StatusSet(int op, int X){
wsdStatInit;
assert( op>=0 && op<ArraySize(wsdStat.nowValue) );
+ assert( op>=0 && op<ArraySize(statMutex) );
+ assert( sqlite3_mutex_held(statMutex[op] ? sqlite3Pcache1Mutex()
+ : sqlite3MallocMutex()) );
wsdStat.nowValue[op] = X;
if( wsdStat.nowValue[op]>wsdStat.mxValue[op] ){
wsdStat.mxValue[op] = wsdStat.nowValue[op];
/*
** Query status information.
-**
-** This implementation assumes that reading or writing an aligned
-** 32-bit integer is an atomic operation. If that assumption is not true,
-** then this routine is not threadsafe.
*/
-SQLITE_API int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag){
+SQLITE_API int SQLITE_STDCALL sqlite3_status64(
+ int op,
+ sqlite3_int64 *pCurrent,
+ sqlite3_int64 *pHighwater,
+ int resetFlag
+){
+ sqlite3_mutex *pMutex;
wsdStatInit;
if( op<0 || op>=ArraySize(wsdStat.nowValue) ){
return SQLITE_MISUSE_BKPT;
}
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( pCurrent==0 || pHighwater==0 ) return SQLITE_MISUSE_BKPT;
+#endif
+ pMutex = statMutex[op] ? sqlite3Pcache1Mutex() : sqlite3MallocMutex();
+ sqlite3_mutex_enter(pMutex);
*pCurrent = wsdStat.nowValue[op];
*pHighwater = wsdStat.mxValue[op];
if( resetFlag ){
wsdStat.mxValue[op] = wsdStat.nowValue[op];
}
+ sqlite3_mutex_leave(pMutex);
+ (void)pMutex; /* Prevent warning when SQLITE_THREADSAFE=0 */
return SQLITE_OK;
}
+SQLITE_API int SQLITE_STDCALL sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag){
+ sqlite3_int64 iCur, iHwtr;
+ int rc;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( pCurrent==0 || pHighwater==0 ) return SQLITE_MISUSE_BKPT;
+#endif
+ rc = sqlite3_status64(op, &iCur, &iHwtr, resetFlag);
+ if( rc==0 ){
+ *pCurrent = (int)iCur;
+ *pHighwater = (int)iHwtr;
+ }
+ return rc;
+}
/*
** Query status information for a single database connection
*/
-SQLITE_API int sqlite3_db_status(
+SQLITE_API int SQLITE_STDCALL sqlite3_db_status(
sqlite3 *db, /* The database connection whose status is desired */
int op, /* Status verb */
int *pCurrent, /* Write current value here */
int resetFlag /* Reset high-water mark if true */
){
int rc = SQLITE_OK; /* Return code */
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) || pCurrent==0|| pHighwater==0 ){
+ return SQLITE_MISUSE_BKPT;
+ }
+#endif
sqlite3_mutex_enter(db->mutex);
switch( op ){
case SQLITE_DBSTATUS_LOOKASIDE_USED: {
** sqlite3RegisterDateTimeFunctions() found at the bottom of the file.
** All other code has file scope.
**
-** SQLite processes all times and dates as Julian Day numbers. The
+** SQLite processes all times and dates as julian day numbers. The
** dates and times are stored as the number of days since noon
** in Greenwich on November 24, 4714 B.C. according to the Gregorian
** calendar system.
**
** The Gregorian calendar system is used for all dates and times,
** even those that predate the Gregorian calendar. Historians usually
-** use the Julian calendar for dates prior to 1582-10-15 and for some
+** use the julian calendar for dates prior to 1582-10-15 and for some
** dates afterwards, depending on locale. Beware of this difference.
**
** The conversion algorithms are implemented based on descriptions
}
/*
-** Attempt to parse the given string into a Julian Day Number. Return
+** Attempt to parse the given string into a julian day number. Return
** the number of errors.
**
** The following are acceptable forms for the input string:
** already, check for an MSVC build environment that provides
** localtime_s().
*/
-#if !defined(HAVE_LOCALTIME_R) && !defined(HAVE_LOCALTIME_S) && \
- defined(_MSC_VER) && defined(_CRT_INSECURE_DEPRECATE)
+#if !HAVE_LOCALTIME_R && !HAVE_LOCALTIME_S \
+ && defined(_MSC_VER) && defined(_CRT_INSECURE_DEPRECATE)
+#undef HAVE_LOCALTIME_S
#define HAVE_LOCALTIME_S 1
#endif
*/
static int osLocaltime(time_t *t, struct tm *pTm){
int rc;
-#if (!defined(HAVE_LOCALTIME_R) || !HAVE_LOCALTIME_R) \
- && (!defined(HAVE_LOCALTIME_S) || !HAVE_LOCALTIME_S)
+#if !HAVE_LOCALTIME_R && !HAVE_LOCALTIME_S
struct tm *pX;
#if SQLITE_THREADSAFE>0
sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
#ifndef SQLITE_OMIT_BUILTIN_TEST
if( sqlite3GlobalConfig.bLocaltimeFault ) return 1;
#endif
-#if defined(HAVE_LOCALTIME_R) && HAVE_LOCALTIME_R
+#if HAVE_LOCALTIME_R
rc = localtime_r(t, pTm)==0;
#else
rc = localtime_s(pTm, t);
** %f ** fractional seconds SS.SSS
** %H hour 00-24
** %j day of year 000-366
-** %J ** Julian day number
+** %J ** julian day number
** %m month 01-12
** %M minute 00-59
** %s seconds since 1970-01-01
size_t i,j;
char *z;
sqlite3 *db;
- const char *zFmt = (const char*)sqlite3_value_text(argv[0]);
+ const char *zFmt;
char zBuf[100];
+ if( argc==0 ) return;
+ zFmt = (const char*)sqlite3_value_text(argv[0]);
if( zFmt==0 || isDate(context, argc-1, argv+1, &x) ) return;
db = sqlite3_context_db_handle(context);
for(i=0, n=1; zFmt[i]; i++, n++){
iT = sqlite3StmtCurrentTime(context);
if( iT<=0 ) return;
t = iT/1000 - 10000*(sqlite3_int64)21086676;
-#ifdef HAVE_GMTIME_R
+#if HAVE_GMTIME_R
pTm = gmtime_r(&t, &sNow);
#else
sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
** Locate a VFS by name. If no name is given, simply return the
** first VFS on the list.
*/
-SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfs){
+SQLITE_API sqlite3_vfs *SQLITE_STDCALL sqlite3_vfs_find(const char *zVfs){
sqlite3_vfs *pVfs = 0;
#if SQLITE_THREADSAFE
sqlite3_mutex *mutex;
** VFS multiple times. The new VFS becomes the default if makeDflt is
** true.
*/
-SQLITE_API int sqlite3_vfs_register(sqlite3_vfs *pVfs, int makeDflt){
+SQLITE_API int SQLITE_STDCALL sqlite3_vfs_register(sqlite3_vfs *pVfs, int makeDflt){
MUTEX_LOGIC(sqlite3_mutex *mutex;)
#ifndef SQLITE_OMIT_AUTOINIT
int rc = sqlite3_initialize();
if( rc ) return rc;
#endif
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( pVfs==0 ) return SQLITE_MISUSE_BKPT;
+#endif
+
MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
sqlite3_mutex_enter(mutex);
vfsUnlink(pVfs);
/*
** Unregister a VFS so that it is no longer accessible.
*/
-SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs *pVfs){
+SQLITE_API int SQLITE_STDCALL sqlite3_vfs_unregister(sqlite3_vfs *pVfs){
#if SQLITE_THREADSAFE
sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
#endif
** The malloc.h header file is needed for malloc_usable_size() function
** on some systems (e.g. Linux).
*/
-#if defined(HAVE_MALLOC_H) && defined(HAVE_MALLOC_USABLE_SIZE)
-# define SQLITE_USE_MALLOC_H
-# define SQLITE_USE_MALLOC_USABLE_SIZE
+#if HAVE_MALLOC_H && HAVE_MALLOC_USABLE_SIZE
+# define SQLITE_USE_MALLOC_H 1
+# define SQLITE_USE_MALLOC_USABLE_SIZE 1
/*
** The MSVCRT has malloc_usable_size(), but it is called _msize(). The
** use of _msize() is automatic, but can be disabled by compiling with
/*
** Retrieve a pointer to a static mutex or allocate a new dynamic one.
*/
-SQLITE_API sqlite3_mutex *sqlite3_mutex_alloc(int id){
+SQLITE_API sqlite3_mutex *SQLITE_STDCALL sqlite3_mutex_alloc(int id){
#ifndef SQLITE_OMIT_AUTOINIT
if( id<=SQLITE_MUTEX_RECURSIVE && sqlite3_initialize() ) return 0;
+ if( id>SQLITE_MUTEX_RECURSIVE && sqlite3MutexInit() ) return 0;
#endif
return sqlite3GlobalConfig.mutex.xMutexAlloc(id);
}
/*
** Free a dynamic mutex.
*/
-SQLITE_API void sqlite3_mutex_free(sqlite3_mutex *p){
+SQLITE_API void SQLITE_STDCALL sqlite3_mutex_free(sqlite3_mutex *p){
if( p ){
sqlite3GlobalConfig.mutex.xMutexFree(p);
}
** Obtain the mutex p. If some other thread already has the mutex, block
** until it can be obtained.
*/
-SQLITE_API void sqlite3_mutex_enter(sqlite3_mutex *p){
+SQLITE_API void SQLITE_STDCALL sqlite3_mutex_enter(sqlite3_mutex *p){
if( p ){
sqlite3GlobalConfig.mutex.xMutexEnter(p);
}
** Obtain the mutex p. If successful, return SQLITE_OK. Otherwise, if another
** thread holds the mutex and it cannot be obtained, return SQLITE_BUSY.
*/
-SQLITE_API int sqlite3_mutex_try(sqlite3_mutex *p){
+SQLITE_API int SQLITE_STDCALL sqlite3_mutex_try(sqlite3_mutex *p){
int rc = SQLITE_OK;
if( p ){
return sqlite3GlobalConfig.mutex.xMutexTry(p);
** is not currently entered. If a NULL pointer is passed as an argument
** this function is a no-op.
*/
-SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex *p){
+SQLITE_API void SQLITE_STDCALL sqlite3_mutex_leave(sqlite3_mutex *p){
if( p ){
sqlite3GlobalConfig.mutex.xMutexLeave(p);
}
** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are
** intended for use inside assert() statements.
*/
-SQLITE_API int sqlite3_mutex_held(sqlite3_mutex *p){
+SQLITE_API int SQLITE_STDCALL sqlite3_mutex_held(sqlite3_mutex *p){
return p==0 || sqlite3GlobalConfig.mutex.xMutexHeld(p);
}
-SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex *p){
+SQLITE_API int SQLITE_STDCALL sqlite3_mutex_notheld(sqlite3_mutex *p){
return p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld(p);
}
#endif
break;
}
default: {
- assert( id-2 >= 0 );
- assert( id-2 < (int)(sizeof(aStatic)/sizeof(aStatic[0])) );
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( id-2<0 || id-2>=ArraySize(aStatic) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
pNew = &aStatic[id-2];
pNew->id = id;
break;
static void debugMutexFree(sqlite3_mutex *pX){
sqlite3_debug_mutex *p = (sqlite3_debug_mutex*)pX;
assert( p->cnt==0 );
- assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE );
- sqlite3_free(p);
+ if( p->id==SQLITE_MUTEX_RECURSIVE || p->id==SQLITE_MUTEX_FAST ){
+ sqlite3_free(p);
+ }else{
+#ifdef SQLITE_ENABLE_API_ARMOR
+ (void)SQLITE_MISUSE_BKPT;
+#endif
+ }
}
/*
*/
struct sqlite3_mutex {
pthread_mutex_t mutex; /* Mutex controlling the lock */
-#if SQLITE_MUTEX_NREF
+#if SQLITE_MUTEX_NREF || defined(SQLITE_ENABLE_API_ARMOR)
int id; /* Mutex type */
+#endif
+#if SQLITE_MUTEX_NREF
volatile int nRef; /* Number of entrances */
volatile pthread_t owner; /* Thread that is within this mutex */
int trace; /* True to trace changes */
pthread_mutexattr_settype(&recursiveAttr, PTHREAD_MUTEX_RECURSIVE);
pthread_mutex_init(&p->mutex, &recursiveAttr);
pthread_mutexattr_destroy(&recursiveAttr);
-#endif
-#if SQLITE_MUTEX_NREF
- p->id = iType;
#endif
}
break;
case SQLITE_MUTEX_FAST: {
p = sqlite3MallocZero( sizeof(*p) );
if( p ){
-#if SQLITE_MUTEX_NREF
- p->id = iType;
-#endif
pthread_mutex_init(&p->mutex, 0);
}
break;
}
default: {
- assert( iType-2 >= 0 );
- assert( iType-2 < ArraySize(staticMutexes) );
- p = &staticMutexes[iType-2];
-#if SQLITE_MUTEX_NREF
- p->id = iType;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( iType-2<0 || iType-2>=ArraySize(staticMutexes) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
#endif
+ p = &staticMutexes[iType-2];
break;
}
}
+#if SQLITE_MUTEX_NREF || defined(SQLITE_ENABLE_API_ARMOR)
+ if( p ) p->id = iType;
+#endif
return p;
}
*/
static void pthreadMutexFree(sqlite3_mutex *p){
assert( p->nRef==0 );
- assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE );
- pthread_mutex_destroy(&p->mutex);
- sqlite3_free(p);
+#if SQLITE_ENABLE_API_ARMOR
+ if( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE )
+#endif
+ {
+ pthread_mutex_destroy(&p->mutex);
+ sqlite3_free(p);
+ }
+#ifdef SQLITE_ENABLE_API_ARMOR
+ else{
+ (void)SQLITE_MISUSE_BKPT;
+ }
+#endif
}
/*
# define SQLITE_WIN32_VOLATILE volatile
#endif
+/*
+** For some Windows sub-platforms, the _beginthreadex() / _endthreadex()
+** functions are not available (e.g. those not using MSVC, Cygwin, etc).
+*/
+#if SQLITE_OS_WIN && !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && \
+ SQLITE_THREADSAFE>0 && !defined(__CYGWIN__)
+# define SQLITE_OS_WIN_THREADS 1
+#else
+# define SQLITE_OS_WIN_THREADS 0
+#endif
+
#endif /* _OS_WIN_H_ */
/************** End of os_win.h **********************************************/
*/
static LONG SQLITE_WIN32_VOLATILE winMutex_lock = 0;
-SQLITE_API int sqlite3_win32_is_nt(void); /* os_win.c */
-SQLITE_API void sqlite3_win32_sleep(DWORD milliseconds); /* os_win.c */
+SQLITE_API int SQLITE_STDCALL sqlite3_win32_is_nt(void); /* os_win.c */
+SQLITE_API void SQLITE_STDCALL sqlite3_win32_sleep(DWORD milliseconds); /* os_win.c */
static int winMutexInit(void){
/* The first to increment to 1 does actual initialization */
case SQLITE_MUTEX_RECURSIVE: {
p = sqlite3MallocZero( sizeof(*p) );
if( p ){
-#ifdef SQLITE_DEBUG
p->id = iType;
+#ifdef SQLITE_DEBUG
#ifdef SQLITE_WIN32_MUTEX_TRACE_DYNAMIC
p->trace = 1;
#endif
break;
}
default: {
- assert( iType-2 >= 0 );
- assert( iType-2 < ArraySize(winMutex_staticMutexes) );
- assert( winMutex_isInit==1 );
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( iType-2<0 || iType-2>=ArraySize(winMutex_staticMutexes) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
p = &winMutex_staticMutexes[iType-2];
-#ifdef SQLITE_DEBUG
p->id = iType;
+#ifdef SQLITE_DEBUG
#ifdef SQLITE_WIN32_MUTEX_TRACE_STATIC
p->trace = 1;
#endif
*/
static void winMutexFree(sqlite3_mutex *p){
assert( p );
-#ifdef SQLITE_DEBUG
assert( p->nRef==0 && p->owner==0 );
- assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE );
+ if( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE ){
+ DeleteCriticalSection(&p->mutex);
+ sqlite3_free(p);
+ }else{
+#ifdef SQLITE_ENABLE_API_ARMOR
+ (void)SQLITE_MISUSE_BKPT;
#endif
- assert( winMutex_isInit==1 );
- DeleteCriticalSection(&p->mutex);
- sqlite3_free(p);
+ }
}
/*
** held by SQLite. An example of non-essential memory is memory used to
** cache database pages that are not currently in use.
*/
-SQLITE_API int sqlite3_release_memory(int n){
+SQLITE_API int SQLITE_STDCALL sqlite3_release_memory(int n){
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
return sqlite3PcacheReleaseMemory(n);
#else
#define mem0 GLOBAL(struct Mem0Global, mem0)
+/*
+** Return the memory allocator mutex. sqlite3_status() needs it.
+*/
+SQLITE_PRIVATE sqlite3_mutex *sqlite3MallocMutex(void){
+ return mem0.mutex;
+}
+
/*
** This routine runs when the memory allocator sees that the
** total memory allocation is about to exceed the soft heap
void *pArg,
sqlite3_int64 iThreshold
){
- int nUsed;
+ sqlite3_int64 nUsed;
sqlite3_mutex_enter(mem0.mutex);
mem0.alarmCallback = xCallback;
mem0.alarmArg = pArg;
** Deprecated external interface. Internal/core SQLite code
** should call sqlite3MemoryAlarm.
*/
-SQLITE_API int sqlite3_memory_alarm(
+SQLITE_API int SQLITE_STDCALL sqlite3_memory_alarm(
void(*xCallback)(void *pArg, sqlite3_int64 used,int N),
void *pArg,
sqlite3_int64 iThreshold
** Set the soft heap-size limit for the library. Passing a zero or
** negative value indicates no limit.
*/
-SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 n){
+SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_soft_heap_limit64(sqlite3_int64 n){
sqlite3_int64 priorLimit;
sqlite3_int64 excess;
#ifndef SQLITE_OMIT_AUTOINIT
if( excess>0 ) sqlite3_release_memory((int)(excess & 0x7fffffff));
return priorLimit;
}
-SQLITE_API void sqlite3_soft_heap_limit(int n){
+SQLITE_API void SQLITE_STDCALL sqlite3_soft_heap_limit(int n){
if( n<0 ) n = 0;
sqlite3_soft_heap_limit64(n);
}
** Initialize the memory allocation subsystem.
*/
SQLITE_PRIVATE int sqlite3MallocInit(void){
+ int rc;
if( sqlite3GlobalConfig.m.xMalloc==0 ){
sqlite3MemSetDefault();
}
sqlite3GlobalConfig.szPage = 0;
sqlite3GlobalConfig.nPage = 0;
}
- return sqlite3GlobalConfig.m.xInit(sqlite3GlobalConfig.m.pAppData);
+ rc = sqlite3GlobalConfig.m.xInit(sqlite3GlobalConfig.m.pAppData);
+ if( rc!=SQLITE_OK ) memset(&mem0, 0, sizeof(mem0));
+ return rc;
}
/*
/*
** Return the amount of memory currently checked out.
*/
-SQLITE_API sqlite3_int64 sqlite3_memory_used(void){
+SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_memory_used(void){
int n, mx;
sqlite3_int64 res;
sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, 0);
** checked out since either the beginning of this process
** or since the most recent reset.
*/
-SQLITE_API sqlite3_int64 sqlite3_memory_highwater(int resetFlag){
+SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_memory_highwater(int resetFlag){
int n, mx;
sqlite3_int64 res;
sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, resetFlag);
nFull = sqlite3GlobalConfig.m.xRoundup(n);
sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, n);
if( mem0.alarmCallback!=0 ){
- int nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
+ sqlite3_int64 nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
if( nUsed >= mem0.alarmThreshold - nFull ){
mem0.nearlyFull = 1;
sqlite3MallocAlarm(nFull);
#endif
if( p ){
nFull = sqlite3MallocSize(p);
- sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, nFull);
- sqlite3StatusAdd(SQLITE_STATUS_MALLOC_COUNT, 1);
+ sqlite3StatusUp(SQLITE_STATUS_MEMORY_USED, nFull);
+ sqlite3StatusUp(SQLITE_STATUS_MALLOC_COUNT, 1);
}
*pp = p;
return nFull;
** First make sure the memory subsystem is initialized, then do the
** allocation.
*/
-SQLITE_API void *sqlite3_malloc(int n){
+SQLITE_API void *SQLITE_STDCALL sqlite3_malloc(int n){
#ifndef SQLITE_OMIT_AUTOINIT
if( sqlite3_initialize() ) return 0;
#endif
return n<=0 ? 0 : sqlite3Malloc(n);
}
-SQLITE_API void *sqlite3_malloc64(sqlite3_uint64 n){
+SQLITE_API void *SQLITE_STDCALL sqlite3_malloc64(sqlite3_uint64 n){
#ifndef SQLITE_OMIT_AUTOINIT
if( sqlite3_initialize() ) return 0;
#endif
p = mem0.pScratchFree;
mem0.pScratchFree = mem0.pScratchFree->pNext;
mem0.nScratchFree--;
- sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_USED, 1);
+ sqlite3StatusUp(SQLITE_STATUS_SCRATCH_USED, 1);
sqlite3_mutex_leave(mem0.mutex);
}else{
sqlite3_mutex_leave(mem0.mutex);
p = sqlite3Malloc(n);
if( sqlite3GlobalConfig.bMemstat && p ){
sqlite3_mutex_enter(mem0.mutex);
- sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_OVERFLOW, sqlite3MallocSize(p));
+ sqlite3StatusUp(SQLITE_STATUS_SCRATCH_OVERFLOW, sqlite3MallocSize(p));
sqlite3_mutex_leave(mem0.mutex);
}
sqlite3MemdebugSetType(p, MEMTYPE_SCRATCH);
#if SQLITE_THREADSAFE==0 && !defined(NDEBUG)
- /* Verify that no more than two scratch allocations per thread
- ** are outstanding at one time. (This is only checked in the
- ** single-threaded case since checking in the multi-threaded case
- ** would be much more complicated.) */
- assert( scratchAllocOut<=1 );
+ /* EVIDENCE-OF: R-12970-05880 SQLite will not use more than one scratch
+ ** buffers per thread.
+ **
+ ** This can only be checked in single-threaded mode.
+ */
+ assert( scratchAllocOut==0 );
if( p ) scratchAllocOut++;
#endif
mem0.pScratchFree = pSlot;
mem0.nScratchFree++;
assert( mem0.nScratchFree <= (u32)sqlite3GlobalConfig.nScratch );
- sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_USED, -1);
+ sqlite3StatusDown(SQLITE_STATUS_SCRATCH_USED, 1);
sqlite3_mutex_leave(mem0.mutex);
}else{
/* Release memory back to the heap */
assert( sqlite3MemdebugHasType(p, MEMTYPE_SCRATCH) );
- assert( sqlite3MemdebugNoType(p, ~MEMTYPE_SCRATCH) );
+ assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_SCRATCH) );
sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
if( sqlite3GlobalConfig.bMemstat ){
int iSize = sqlite3MallocSize(p);
sqlite3_mutex_enter(mem0.mutex);
- sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_OVERFLOW, -iSize);
- sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, -iSize);
- sqlite3StatusAdd(SQLITE_STATUS_MALLOC_COUNT, -1);
+ sqlite3StatusDown(SQLITE_STATUS_SCRATCH_OVERFLOW, iSize);
+ sqlite3StatusDown(SQLITE_STATUS_MEMORY_USED, iSize);
+ sqlite3StatusDown(SQLITE_STATUS_MALLOC_COUNT, 1);
sqlite3GlobalConfig.m.xFree(p);
sqlite3_mutex_leave(mem0.mutex);
}else{
}
SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3 *db, void *p){
if( db==0 ){
- assert( sqlite3MemdebugNoType(p, ~MEMTYPE_HEAP) );
+ assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) );
assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
return sqlite3MallocSize(p);
}else{
return db->lookaside.sz;
}else{
assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
- assert( sqlite3MemdebugNoType(p, ~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
+ assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
return sqlite3GlobalConfig.m.xSize(p);
}
}
}
-SQLITE_API sqlite3_uint64 sqlite3_msize(void *p){
- assert( sqlite3MemdebugNoType(p, ~MEMTYPE_HEAP) );
+SQLITE_API sqlite3_uint64 SQLITE_STDCALL sqlite3_msize(void *p){
+ assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) );
assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
return (sqlite3_uint64)sqlite3GlobalConfig.m.xSize(p);
}
/*
** Free memory previously obtained from sqlite3Malloc().
*/
-SQLITE_API void sqlite3_free(void *p){
+SQLITE_API void SQLITE_STDCALL sqlite3_free(void *p){
if( p==0 ) return; /* IMP: R-49053-54554 */
assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
- assert( sqlite3MemdebugNoType(p, ~MEMTYPE_HEAP) );
+ assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) );
if( sqlite3GlobalConfig.bMemstat ){
sqlite3_mutex_enter(mem0.mutex);
- sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, -sqlite3MallocSize(p));
- sqlite3StatusAdd(SQLITE_STATUS_MALLOC_COUNT, -1);
+ sqlite3StatusDown(SQLITE_STATUS_MEMORY_USED, sqlite3MallocSize(p));
+ sqlite3StatusDown(SQLITE_STATUS_MALLOC_COUNT, 1);
sqlite3GlobalConfig.m.xFree(p);
sqlite3_mutex_leave(mem0.mutex);
}else{
}
}
assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
- assert( sqlite3MemdebugNoType(p, ~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
+ assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
assert( db!=0 || sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) );
sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
sqlite3_free(p);
int nOld, nNew, nDiff;
void *pNew;
assert( sqlite3MemdebugHasType(pOld, MEMTYPE_HEAP) );
- assert( sqlite3MemdebugNoType(pOld, ~MEMTYPE_HEAP) );
+ assert( sqlite3MemdebugNoType(pOld, (u8)~MEMTYPE_HEAP) );
if( pOld==0 ){
return sqlite3Malloc(nBytes); /* IMP: R-04300-56712 */
}
}
if( pNew ){
nNew = sqlite3MallocSize(pNew);
- sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, nNew-nOld);
+ sqlite3StatusUp(SQLITE_STATUS_MEMORY_USED, nNew-nOld);
}
sqlite3_mutex_leave(mem0.mutex);
}else{
** The public interface to sqlite3Realloc. Make sure that the memory
** subsystem is initialized prior to invoking sqliteRealloc.
*/
-SQLITE_API void *sqlite3_realloc(void *pOld, int n){
+SQLITE_API void *SQLITE_STDCALL sqlite3_realloc(void *pOld, int n){
#ifndef SQLITE_OMIT_AUTOINIT
if( sqlite3_initialize() ) return 0;
#endif
if( n<0 ) n = 0; /* IMP: R-26507-47431 */
return sqlite3Realloc(pOld, n);
}
-SQLITE_API void *sqlite3_realloc64(void *pOld, sqlite3_uint64 n){
+SQLITE_API void *SQLITE_STDCALL sqlite3_realloc64(void *pOld, sqlite3_uint64 n){
#ifndef SQLITE_OMIT_AUTOINIT
if( sqlite3_initialize() ) return 0;
#endif
}
}else{
assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
- assert( sqlite3MemdebugNoType(p, ~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
+ assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
pNew = sqlite3_realloc64(p, n);
if( !pNew ){
** SQLlite.
*/
-/*
-** If the strchrnul() library function is available, then set
-** HAVE_STRCHRNUL. If that routine is not available, this module
-** will supply its own. The built-in version is slower than
-** the glibc version so the glibc version is definitely preferred.
-*/
-#if !defined(HAVE_STRCHRNUL)
-# if defined(linux)
-# define HAVE_STRCHRNUL 1
-# else
-# define HAVE_STRCHRNUL 0
-# endif
-#endif
-
-
/*
** Conversion types fall into various categories as defined by the
** following enumeration.
const et_info *infop; /* Pointer to the appropriate info structure */
char *zOut; /* Rendering buffer */
int nOut; /* Size of the rendering buffer */
- char *zExtra; /* Malloced memory used by some conversion */
+ char *zExtra = 0; /* Malloced memory used by some conversion */
#ifndef SQLITE_OMIT_FLOATING_POINT
int exp, e2; /* exponent of real numbers */
int nsd; /* Number of significant digits returned */
}
if( width<0 ){
flag_leftjustify = 1;
- width = -width;
+ width = width >= -2147483647 ? -width : 0;
}
c = *++fmt;
}else{
+ unsigned wx = 0;
while( c>='0' && c<='9' ){
- width = width*10 + c - '0';
+ wx = wx*10 + c - '0';
c = *++fmt;
}
+ testcase( wx>0x7fffffff );
+ width = wx & 0x7fffffff;
}
+
/* Get the precision */
if( c=='.' ){
precision = 0;
}else{
precision = va_arg(ap,int);
}
- if( precision<0 ) precision = -precision;
c = *++fmt;
+ if( precision<0 ){
+ precision = precision >= -2147483647 ? -precision : -1;
+ }
}else{
+ unsigned px = 0;
while( c>='0' && c<='9' ){
- precision = precision*10 + c - '0';
+ px = px*10 + c - '0';
c = *++fmt;
}
+ testcase( px>0x7fffffff );
+ precision = px & 0x7fffffff;
}
}else{
precision = -1;
break;
}
}
- zExtra = 0;
/*
** At this point, variables are initialized as follows:
else prefix = 0;
}
if( xtype==etGENERIC && precision>0 ) precision--;
- for(idx=precision, rounder=0.5; idx>0; idx--, rounder*=0.1){}
+ testcase( precision>0xfff );
+ for(idx=precision&0xfff, rounder=0.5; idx>0; idx--, rounder*=0.1){}
if( xtype==etFLOAT ) realvalue += rounder;
/* Normalize realvalue to within 10.0 > realvalue >= 1.0 */
exp = 0;
}else{
e2 = exp;
}
- if( MAX(e2,0)+precision+width > etBUFSIZE - 15 ){
- bufpt = zExtra = sqlite3Malloc( MAX(e2,0)+precision+width+15 );
+ if( MAX(e2,0)+(i64)precision+(i64)width > etBUFSIZE - 15 ){
+ bufpt = zExtra
+ = sqlite3Malloc( MAX(e2,0)+(i64)precision+(i64)width+15 );
if( bufpt==0 ){
setStrAccumError(pAccum, STRACCUM_NOMEM);
return;
}else{
c = va_arg(ap,int);
}
- buf[0] = (char)c;
- if( precision>=0 ){
- for(idx=1; idx<precision; idx++) buf[idx] = (char)c;
- length = precision;
- }else{
- length =1;
+ if( precision>1 ){
+ width -= precision-1;
+ if( width>1 && !flag_leftjustify ){
+ sqlite3AppendChar(pAccum, width-1, ' ');
+ width = 0;
+ }
+ sqlite3AppendChar(pAccum, precision-1, c);
}
+ length = 1;
+ buf[0] = c;
bufpt = buf;
break;
case etSTRING:
** the output.
*/
width -= length;
- if( width>0 && !flag_leftjustify ) sqlite3AppendSpace(pAccum, width);
+ if( width>0 && !flag_leftjustify ) sqlite3AppendChar(pAccum, width, ' ');
sqlite3StrAccumAppend(pAccum, bufpt, length);
- if( width>0 && flag_leftjustify ) sqlite3AppendSpace(pAccum, width);
+ if( width>0 && flag_leftjustify ) sqlite3AppendChar(pAccum, width, ' ');
- if( zExtra ) sqlite3_free(zExtra);
+ if( zExtra ){
+ sqlite3_free(zExtra);
+ zExtra = 0;
+ }
}/* End for loop over the format string */
} /* End of function */
*/
static int sqlite3StrAccumEnlarge(StrAccum *p, int N){
char *zNew;
- assert( p->nChar+N >= p->nAlloc ); /* Only called if really needed */
+ assert( p->nChar+(i64)N >= p->nAlloc ); /* Only called if really needed */
if( p->accError ){
testcase(p->accError==STRACCUM_TOOBIG);
testcase(p->accError==STRACCUM_NOMEM);
char *zOld = (p->zText==p->zBase ? 0 : p->zText);
i64 szNew = p->nChar;
szNew += N + 1;
+ if( szNew+p->nChar<=p->mxAlloc ){
+ /* Force exponential buffer size growth as long as it does not overflow,
+ ** to avoid having to call this routine too often */
+ szNew += p->nChar;
+ }
if( szNew > p->mxAlloc ){
sqlite3StrAccumReset(p);
setStrAccumError(p, STRACCUM_TOOBIG);
assert( p->zText!=0 || p->nChar==0 );
if( zOld==0 && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar);
p->zText = zNew;
+ p->nAlloc = sqlite3DbMallocSize(p->db, zNew);
}else{
sqlite3StrAccumReset(p);
setStrAccumError(p, STRACCUM_NOMEM);
}
/*
-** Append N space characters to the given string buffer.
+** Append N copies of character c to the given string buffer.
*/
-SQLITE_PRIVATE void sqlite3AppendSpace(StrAccum *p, int N){
- if( p->nChar+N >= p->nAlloc && (N = sqlite3StrAccumEnlarge(p, N))<=0 ) return;
- while( (N--)>0 ) p->zText[p->nChar++] = ' ';
+SQLITE_PRIVATE void sqlite3AppendChar(StrAccum *p, int N, char c){
+ testcase( p->nChar + (i64)N > 0x7fffffff );
+ if( p->nChar+(i64)N >= p->nAlloc && (N = sqlite3StrAccumEnlarge(p, N))<=0 ){
+ return;
+ }
+ while( (N--)>0 ) p->zText[p->nChar++] = c;
}
/*
** Print into memory obtained from sqlite3_malloc(). Omit the internal
** %-conversion extensions.
*/
-SQLITE_API char *sqlite3_vmprintf(const char *zFormat, va_list ap){
+SQLITE_API char *SQLITE_STDCALL sqlite3_vmprintf(const char *zFormat, va_list ap){
char *z;
char zBase[SQLITE_PRINT_BUF_SIZE];
StrAccum acc;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( zFormat==0 ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
#ifndef SQLITE_OMIT_AUTOINIT
if( sqlite3_initialize() ) return 0;
#endif
** Print into memory obtained from sqlite3_malloc()(). Omit the internal
** %-conversion extensions.
*/
-SQLITE_API char *sqlite3_mprintf(const char *zFormat, ...){
+SQLITE_API char *SQLITE_CDECL sqlite3_mprintf(const char *zFormat, ...){
va_list ap;
char *z;
#ifndef SQLITE_OMIT_AUTOINIT
**
** sqlite3_vsnprintf() is the varargs version.
*/
-SQLITE_API char *sqlite3_vsnprintf(int n, char *zBuf, const char *zFormat, va_list ap){
+SQLITE_API char *SQLITE_STDCALL sqlite3_vsnprintf(int n, char *zBuf, const char *zFormat, va_list ap){
StrAccum acc;
if( n<=0 ) return zBuf;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( zBuf==0 || zFormat==0 ) {
+ (void)SQLITE_MISUSE_BKPT;
+ if( zBuf ) zBuf[0] = 0;
+ return zBuf;
+ }
+#endif
sqlite3StrAccumInit(&acc, zBuf, n, 0);
acc.useMalloc = 0;
sqlite3VXPrintf(&acc, 0, zFormat, ap);
return sqlite3StrAccumFinish(&acc);
}
-SQLITE_API char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){
+SQLITE_API char *SQLITE_CDECL sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){
char *z;
va_list ap;
va_start(ap,zFormat);
/*
** Format and write a message to the log if logging is enabled.
*/
-SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...){
+SQLITE_API void SQLITE_CDECL sqlite3_log(int iErrCode, const char *zFormat, ...){
va_list ap; /* Vararg list */
if( sqlite3GlobalConfig.xLog ){
va_start(ap, zFormat);
/*
** Return N random bytes.
*/
-SQLITE_API void sqlite3_randomness(int N, void *pBuf){
+SQLITE_API void SQLITE_STDCALL sqlite3_randomness(int N, void *pBuf){
unsigned char t;
unsigned char *zBuf = pBuf;
#endif
#if SQLITE_THREADSAFE
- sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_PRNG);
- sqlite3_mutex_enter(mutex);
+ sqlite3_mutex *mutex;
+#endif
+
+#ifndef SQLITE_OMIT_AUTOINIT
+ if( sqlite3_initialize() ) return;
#endif
- if( N<=0 ){
+#if SQLITE_THREADSAFE
+ mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_PRNG);
+#endif
+
+ sqlite3_mutex_enter(mutex);
+ if( N<=0 || pBuf==0 ){
wsdPrng.isInit = 0;
sqlite3_mutex_leave(mutex);
return;
** of multiple cores can do so, while also allowing applications to stay
** single-threaded if desired.
*/
+#if SQLITE_OS_WIN
+#endif
#if SQLITE_MAX_WORKER_THREADS>0
/********************************* Win32 Threads ****************************/
-#if SQLITE_OS_WIN && !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_THREADSAFE>0
+#if SQLITE_OS_WIN_THREADS
#define SQLITE_THREADS_IMPLEMENTED 1 /* Prevent the single-thread code below */
#include <process.h>
return (rc==WAIT_OBJECT_0) ? SQLITE_OK : SQLITE_ERROR;
}
-#endif /* SQLITE_OS_WIN && !SQLITE_OS_WINCE && !SQLITE_OS_WINRT */
+#endif /* SQLITE_OS_WIN_THREADS */
/******************************** End Win32 Threads *************************/
**
*/
/* #include <stdarg.h> */
-#ifdef SQLITE_HAVE_ISNAN
+#if HAVE_ISNAN || SQLITE_HAVE_ISNAN
# include <math.h>
#endif
*/
SQLITE_PRIVATE int sqlite3IsNaN(double x){
int rc; /* The value return */
-#if !defined(SQLITE_HAVE_ISNAN)
+#if !SQLITE_HAVE_ISNAN && !HAVE_ISNAN
/*
** Systems that support the isnan() library function should probably
** make use of it by compiling with -DSQLITE_HAVE_ISNAN. But we have
volatile double y = x;
volatile double z = y;
rc = (y!=z);
-#else /* if defined(SQLITE_HAVE_ISNAN) */
+#else /* if HAVE_ISNAN */
rc = isnan(x);
-#endif /* SQLITE_HAVE_ISNAN */
+#endif /* HAVE_ISNAN */
testcase( rc );
return rc;
}
** case-independent fashion, using the same definition of "case
** independence" that SQLite uses internally when comparing identifiers.
*/
-SQLITE_API int sqlite3_stricmp(const char *zLeft, const char *zRight){
+SQLITE_API int SQLITE_STDCALL sqlite3_stricmp(const char *zLeft, const char *zRight){
register unsigned char *a, *b;
+ if( zLeft==0 ){
+ return zRight ? -1 : 0;
+ }else if( zRight==0 ){
+ return 1;
+ }
a = (unsigned char *)zLeft;
b = (unsigned char *)zRight;
while( *a!=0 && UpperToLower[*a]==UpperToLower[*b]){ a++; b++; }
return UpperToLower[*a] - UpperToLower[*b];
}
-SQLITE_API int sqlite3_strnicmp(const char *zLeft, const char *zRight, int N){
+SQLITE_API int SQLITE_STDCALL sqlite3_strnicmp(const char *zLeft, const char *zRight, int N){
register unsigned char *a, *b;
+ if( zLeft==0 ){
+ return zRight ? -1 : 0;
+ }else if( zRight==0 ){
+ return 1;
+ }
a = (unsigned char *)zLeft;
b = (unsigned char *)zRight;
while( N-- > 0 && *a!=0 && UpperToLower[*a]==UpperToLower[*b]){ a++; b++; }
/* 136 */ "MemMax" OpHelp("r[P1]=max(r[P1],r[P2])"),
/* 137 */ "IfPos" OpHelp("if r[P1]>0 goto P2"),
/* 138 */ "IfNeg" OpHelp("r[P1]+=P3, if r[P1]<0 goto P2"),
- /* 139 */ "IfZero" OpHelp("r[P1]+=P3, if r[P1]==0 goto P2"),
- /* 140 */ "AggFinal" OpHelp("accum=r[P1] N=P2"),
- /* 141 */ "IncrVacuum" OpHelp(""),
- /* 142 */ "Expire" OpHelp(""),
- /* 143 */ "TableLock" OpHelp("iDb=P1 root=P2 write=P3"),
- /* 144 */ "VBegin" OpHelp(""),
- /* 145 */ "VCreate" OpHelp(""),
- /* 146 */ "VDestroy" OpHelp(""),
- /* 147 */ "VOpen" OpHelp(""),
- /* 148 */ "VColumn" OpHelp("r[P3]=vcolumn(P2)"),
- /* 149 */ "VNext" OpHelp(""),
- /* 150 */ "VRename" OpHelp(""),
- /* 151 */ "Pagecount" OpHelp(""),
- /* 152 */ "MaxPgcnt" OpHelp(""),
- /* 153 */ "Init" OpHelp("Start at P2"),
- /* 154 */ "Noop" OpHelp(""),
- /* 155 */ "Explain" OpHelp(""),
+ /* 139 */ "IfNotZero" OpHelp("if r[P1]!=0 then r[P1]+=P3, goto P2"),
+ /* 140 */ "DecrJumpZero" OpHelp("if (--r[P1])==0 goto P2"),
+ /* 141 */ "JumpZeroIncr" OpHelp("if (r[P1]++)==0 ) goto P2"),
+ /* 142 */ "AggFinal" OpHelp("accum=r[P1] N=P2"),
+ /* 143 */ "IncrVacuum" OpHelp(""),
+ /* 144 */ "Expire" OpHelp(""),
+ /* 145 */ "TableLock" OpHelp("iDb=P1 root=P2 write=P3"),
+ /* 146 */ "VBegin" OpHelp(""),
+ /* 147 */ "VCreate" OpHelp(""),
+ /* 148 */ "VDestroy" OpHelp(""),
+ /* 149 */ "VOpen" OpHelp(""),
+ /* 150 */ "VColumn" OpHelp("r[P3]=vcolumn(P2)"),
+ /* 151 */ "VNext" OpHelp(""),
+ /* 152 */ "VRename" OpHelp(""),
+ /* 153 */ "Pagecount" OpHelp(""),
+ /* 154 */ "MaxPgcnt" OpHelp(""),
+ /* 155 */ "Init" OpHelp("Start at P2"),
+ /* 156 */ "Noop" OpHelp(""),
+ /* 157 */ "Explain" OpHelp(""),
};
return azName[i];
}
# endif
#endif
-/*
-** Define the OS_VXWORKS pre-processor macro to 1 if building on
-** vxworks, or 0 otherwise.
-*/
-#ifndef OS_VXWORKS
-# if defined(__RTP__) || defined(_WRS_KERNEL)
-# define OS_VXWORKS 1
-# else
-# define OS_VXWORKS 0
-# endif
-#endif
-
/*
** standard include files.
*/
# include <sys/mman.h>
#endif
-#if SQLITE_ENABLE_LOCKING_STYLE || OS_VXWORKS
+#if SQLITE_ENABLE_LOCKING_STYLE
# include <sys/ioctl.h>
-# if OS_VXWORKS
-# include <semaphore.h>
-# include <limits.h>
-# else
-# include <sys/file.h>
-# include <sys/param.h>
-# endif
+# include <sys/file.h>
+# include <sys/param.h>
#endif /* SQLITE_ENABLE_LOCKING_STYLE */
-#if defined(__APPLE__) || (SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS)
+#if OS_VXWORKS
+/* # include <sys/ioctl.h> */
+# include <semaphore.h>
+# include <limits.h>
+#endif /* OS_VXWORKS */
+
+#if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE
# include <sys/mount.h>
#endif
*/
#define MAX_PATHNAME 512
+/* Always cast the getpid() return type for compatibility with
+** kernel modules in VxWorks. */
+#define osGetpid(X) (pid_t)getpid()
+
/*
** Only set the lastErrno if the error code is a real error and not
** a normal expected return code of SQLITE_BUSY or SQLITE_OK
** method was called. If xOpen() is called from a different process id,
** indicating that a fork() has occurred, the PRNG will be reset.
*/
-static int randomnessPid = 0;
+static pid_t randomnessPid = 0;
/*
** Allowed values for the unixFile.ctrlFlags bitmask:
#define UNIXFILE_DELETE 0x20 /* Delete on close */
#define UNIXFILE_URI 0x40 /* Filename might have query parameters */
#define UNIXFILE_NOLOCK 0x80 /* Do no file locking */
-#define UNIXFILE_WARNED 0x0100 /* verifyDbFile() warnings have been issued */
+#define UNIXFILE_WARNED 0x0100 /* verifyDbFile() warnings issued */
+#define UNIXFILE_BLOCK 0x0200 /* Next SHM lock might block */
/*
** Include code that is common to all os_*.c files
{ "read", (sqlite3_syscall_ptr)read, 0 },
#define osRead ((ssize_t(*)(int,void*,size_t))aSyscall[8].pCurrent)
-#if defined(USE_PREAD) || (SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS)
+#if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE
{ "pread", (sqlite3_syscall_ptr)pread, 0 },
#else
{ "pread", (sqlite3_syscall_ptr)0, 0 },
{ "write", (sqlite3_syscall_ptr)write, 0 },
#define osWrite ((ssize_t(*)(int,const void*,size_t))aSyscall[11].pCurrent)
-#if defined(USE_PREAD) || (SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS)
+#if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE
{ "pwrite", (sqlite3_syscall_ptr)pwrite, 0 },
#else
{ "pwrite", (sqlite3_syscall_ptr)0, 0 },
/*
** Retry ftruncate() calls that fail due to EINTR
**
-** All calls to ftruncate() within this file should be made through this wrapper.
-** On the Android platform, bypassing the logic below could lead to a corrupt
-** database.
+** All calls to ftruncate() within this file should be made through
+** this wrapper. On the Android platform, bypassing the logic below
+** could lead to a corrupt database.
*/
static int robust_ftruncate(int h, sqlite3_int64 sz){
int rc;
}
}
+/*
+** Set the pFile->lastErrno. Do this in a subroutine as that provides
+** a convenient place to set a breakpoint.
+*/
+static void storeLastErrno(unixFile *pFile, int error){
+ pFile->lastErrno = error;
+}
+
/*
** Close all file descriptors accumuated in the unixInodeInfo->pUnused list.
*/
fd = pFile->h;
rc = osFstat(fd, &statbuf);
if( rc!=0 ){
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
#ifdef EOVERFLOW
if( pFile->lastErrno==EOVERFLOW ) return SQLITE_NOLFS;
#endif
if( statbuf.st_size==0 && (pFile->fsFlags & SQLITE_FSFLAGS_IS_MSDOS)!=0 ){
do{ rc = osWrite(fd, "S", 1); }while( rc<0 && errno==EINTR );
if( rc!=1 ){
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
return SQLITE_IOERR;
}
rc = osFstat(fd, &statbuf);
if( rc!=0 ){
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
return SQLITE_IOERR;
}
}
lock.l_type = F_WRLCK;
if( osFcntl(pFile->h, F_GETLK, &lock) ){
rc = SQLITE_IOERR_CHECKRESERVEDLOCK;
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
} else if( lock.l_type!=F_UNLCK ){
reserved = 1;
}
assert( pFile );
OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h,
azFileLock(eFileLock), azFileLock(pFile->eFileLock),
- azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared , getpid()));
+ azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared,
+ osGetpid(0)));
/* If there is already a lock of this type or more restrictive on the
** unixFile, do nothing. Don't use the end_lock: exit path, as
tErrno = errno;
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
if( rc!=SQLITE_BUSY ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
}
goto end_lock;
}
if( rc ){
if( rc!=SQLITE_BUSY ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
}
goto end_lock;
}else{
tErrno = errno;
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
if( rc!=SQLITE_BUSY ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
}
}
}
assert( pFile );
OSTRACE(("UNLOCK %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock,
pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared,
- getpid()));
+ osGetpid(0)));
assert( eFileLock<=SHARED_LOCK );
if( pFile->eFileLock<=eFileLock ){
** 4: [RRRR.]
*/
if( eFileLock==SHARED_LOCK ){
-
#if !defined(__APPLE__) || !SQLITE_ENABLE_LOCKING_STYLE
(void)handleNFSUnlock;
assert( handleNFSUnlock==0 );
tErrno = errno;
rc = SQLITE_IOERR_UNLOCK;
if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
}
goto end_unlock;
}
tErrno = errno;
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_RDLOCK);
if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
}
goto end_unlock;
}
tErrno = errno;
rc = SQLITE_IOERR_UNLOCK;
if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
}
goto end_unlock;
}
** SQLITE_BUSY would confuse the upper layer (in practice it causes
** an assert to fail). */
rc = SQLITE_IOERR_RDLOCK;
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
goto end_unlock;
}
}
pInode->eFileLock = SHARED_LOCK;
}else{
rc = SQLITE_IOERR_UNLOCK;
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
goto end_unlock;
}
}
pInode->eFileLock = NO_LOCK;
}else{
rc = SQLITE_IOERR_UNLOCK;
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
pInode->eFileLock = NO_LOCK;
pFile->eFileLock = NO_LOCK;
}
} else {
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
}
}
return rc;
assert( pFile );
OSTRACE(("UNLOCK %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock,
- pFile->eFileLock, getpid()));
+ pFile->eFileLock, osGetpid(0)));
assert( eFileLock<=SHARED_LOCK );
/* no-op if possible */
rc = SQLITE_IOERR_UNLOCK;
}
if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
}
return rc;
}
** still works when you do this, but concurrency is reduced since
** only a single process can be reading the database at a time.
**
-** Omit this section if SQLITE_ENABLE_LOCKING_STYLE is turned off or if
-** compiling for VXWORKS.
+** Omit this section if SQLITE_ENABLE_LOCKING_STYLE is turned off
*/
-#if SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS
+#if SQLITE_ENABLE_LOCKING_STYLE
/*
** Retry flock() calls that fail with EINTR
/* unlock failed with an error */
lrc = SQLITE_IOERR_UNLOCK;
if( IS_LOCK_ERROR(lrc) ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
rc = lrc;
}
}
/* someone else might have it reserved */
lrc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
if( IS_LOCK_ERROR(lrc) ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
rc = lrc;
}
}
/* didn't get, must be busy */
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
}
} else {
/* got it, set the type and return ok */
assert( pFile );
OSTRACE(("UNLOCK %d %d was %d pid=%d (flock)\n", pFile->h, eFileLock,
- pFile->eFileLock, getpid()));
+ pFile->eFileLock, osGetpid(0)));
assert( eFileLock<=SHARED_LOCK );
/* no-op if possible */
** to a non-zero value otherwise *pResOut is set to zero. The return value
** is set to SQLITE_OK unless an I/O error occurs during lock checking.
*/
-static int semCheckReservedLock(sqlite3_file *id, int *pResOut) {
+static int semXCheckReservedLock(sqlite3_file *id, int *pResOut) {
int rc = SQLITE_OK;
int reserved = 0;
unixFile *pFile = (unixFile*)id;
int tErrno = errno;
if( EAGAIN != tErrno ){
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_CHECKRESERVEDLOCK);
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
} else {
/* someone else has the lock when we are in NO_LOCK */
reserved = (pFile->eFileLock < SHARED_LOCK);
** This routine will only increase a lock. Use the sqlite3OsUnlock()
** routine to lower a locking level.
*/
-static int semLock(sqlite3_file *id, int eFileLock) {
+static int semXLock(sqlite3_file *id, int eFileLock) {
unixFile *pFile = (unixFile*)id;
sem_t *pSem = pFile->pInode->pSem;
int rc = SQLITE_OK;
** If the locking level of the file descriptor is already at or below
** the requested locking level, this routine is a no-op.
*/
-static int semUnlock(sqlite3_file *id, int eFileLock) {
+static int semXUnlock(sqlite3_file *id, int eFileLock) {
unixFile *pFile = (unixFile*)id;
sem_t *pSem = pFile->pInode->pSem;
assert( pFile );
assert( pSem );
OSTRACE(("UNLOCK %d %d was %d pid=%d (sem)\n", pFile->h, eFileLock,
- pFile->eFileLock, getpid()));
+ pFile->eFileLock, osGetpid(0)));
assert( eFileLock<=SHARED_LOCK );
/* no-op if possible */
int rc, tErrno = errno;
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
}
return rc;
}
/*
** Close a file.
*/
-static int semClose(sqlite3_file *id) {
+static int semXClose(sqlite3_file *id) {
if( id ){
unixFile *pFile = (unixFile*)id;
- semUnlock(id, NO_LOCK);
+ semXUnlock(id, NO_LOCK);
assert( pFile );
unixEnterMutex();
releaseInodeInfo(pFile);
setLockFlag ? SQLITE_IOERR_LOCK : SQLITE_IOERR_UNLOCK);
#endif /* SQLITE_IGNORE_AFP_LOCK_ERRORS */
if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
+ storeLastErrno(pFile, tErrno);
}
return rc;
} else {
assert( pFile );
OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (afp)\n", pFile->h,
azFileLock(eFileLock), azFileLock(pFile->eFileLock),
- azFileLock(pInode->eFileLock), pInode->nShared , getpid()));
+ azFileLock(pInode->eFileLock), pInode->nShared , osGetpid(0)));
/* If there is already a lock of this type or more restrictive on the
** unixFile, do nothing. Don't use the afp_end_lock: exit path, as
lrc2 = afpSetLock(context->dbPath, pFile, PENDING_BYTE, 1, 0);
if( IS_LOCK_ERROR(lrc1) ) {
- pFile->lastErrno = lrc1Errno;
+ storeLastErrno(pFile, lrc1Errno);
rc = lrc1;
goto afp_end_lock;
} else if( IS_LOCK_ERROR(lrc2) ){
assert( pFile );
OSTRACE(("UNLOCK %d %d was %d(%d,%d) pid=%d (afp)\n", pFile->h, eFileLock,
pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared,
- getpid()));
+ osGetpid(0)));
assert( eFileLock<=SHARED_LOCK );
if( pFile->eFileLock<=eFileLock ){
SimulateIOError( newOffset-- );
if( newOffset!=offset ){
if( newOffset == -1 ){
- ((unixFile*)id)->lastErrno = errno;
+ storeLastErrno((unixFile*)id, errno);
}else{
- ((unixFile*)id)->lastErrno = 0;
+ storeLastErrno((unixFile*)id, 0);
}
return -1;
}
if( got<0 ){
if( errno==EINTR ){ got = 1; continue; }
prior = 0;
- ((unixFile*)id)->lastErrno = errno;
+ storeLastErrno((unixFile*)id, errno);
break;
}else if( got>0 ){
cnt -= got;
/* lastErrno set by seekAndRead */
return SQLITE_IOERR_READ;
}else{
- pFile->lastErrno = 0; /* not a system error */
+ storeLastErrno(pFile, 0); /* not a system error */
/* Unread parts of the buffer must be zero-filled */
memset(&((char*)pBuf)[got], 0, amt-got);
return SQLITE_IOERR_SHORT_READ;
TIMER_START;
#if defined(USE_PREAD)
- do{ rc = osPwrite(fd, pBuf, nBuf, iOff); }while( rc<0 && errno==EINTR );
+ do{ rc = (int)osPwrite(fd, pBuf, nBuf, iOff); }while( rc<0 && errno==EINTR );
#elif defined(USE_PREAD64)
- do{ rc = osPwrite64(fd, pBuf, nBuf, iOff);}while( rc<0 && errno==EINTR);
+ do{ rc = (int)osPwrite64(fd, pBuf, nBuf, iOff);}while( rc<0 && errno==EINTR);
#else
do{
i64 iSeek = lseek(fd, iOff, SEEK_SET);
/* lastErrno set by seekAndWrite */
return SQLITE_IOERR_WRITE;
}else{
- pFile->lastErrno = 0; /* not a system error */
+ storeLastErrno(pFile, 0); /* not a system error */
return SQLITE_FULL;
}
}
** We do not trust systems to provide a working fdatasync(). Some do.
** Others do no. To be safe, we will stick with the (slightly slower)
** fsync(). If you know that your system does support fdatasync() correctly,
-** then simply compile with -Dfdatasync=fdatasync
+** then simply compile with -Dfdatasync=fdatasync or -DHAVE_FDATASYNC
*/
-#if !defined(fdatasync)
+#if !defined(fdatasync) && !HAVE_FDATASYNC
# define fdatasync fsync
#endif
rc = full_fsync(pFile->h, isFullsync, isDataOnly);
SimulateIOError( rc=1 );
if( rc ){
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
return unixLogError(SQLITE_IOERR_FSYNC, "full_fsync", pFile->zPath);
}
rc = robust_ftruncate(pFile->h, nByte);
if( rc ){
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath);
}else{
#ifdef SQLITE_DEBUG
rc = osFstat(((unixFile*)id)->h, &buf);
SimulateIOError( rc=1 );
if( rc!=0 ){
- ((unixFile*)id)->lastErrno = errno;
+ storeLastErrno((unixFile*)id, errno);
return SQLITE_IOERR_FSTAT;
}
*pSize = buf.st_size;
i64 nSize; /* Required file size */
struct stat buf; /* Used to hold return values of fstat() */
- if( osFstat(pFile->h, &buf) ) return SQLITE_IOERR_FSTAT;
+ if( osFstat(pFile->h, &buf) ){
+ return SQLITE_IOERR_FSTAT;
+ }
nSize = ((nByte+pFile->szChunk-1) / pFile->szChunk) * pFile->szChunk;
if( nSize>(i64)buf.st_size ){
}while( err==EINTR );
if( err ) return SQLITE_IOERR_WRITE;
#else
- /* If the OS does not have posix_fallocate(), fake it. First use
- ** ftruncate() to set the file size, then write a single byte to
- ** the last byte in each block within the extended region. This
- ** is the same technique used by glibc to implement posix_fallocate()
- ** on systems that do not have a real fallocate() system call.
+ /* If the OS does not have posix_fallocate(), fake it. Write a
+ ** single byte to the last byte in each block that falls entirely
+ ** within the extended region. Then, if required, a single byte
+ ** at offset (nSize-1), to set the size of the file correctly.
+ ** This is a similar technique to that used by glibc on systems
+ ** that do not have a real fallocate() call.
*/
int nBlk = buf.st_blksize; /* File-system block size */
+ int nWrite = 0; /* Number of bytes written by seekAndWrite */
i64 iWrite; /* Next offset to write to */
- if( robust_ftruncate(pFile->h, nSize) ){
- pFile->lastErrno = errno;
- return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath);
- }
iWrite = ((buf.st_size + 2*nBlk - 1)/nBlk)*nBlk-1;
- while( iWrite<nSize ){
- int nWrite = seekAndWrite(pFile, iWrite, "", 1);
+ assert( iWrite>=buf.st_size );
+ assert( (iWrite/nBlk)==((buf.st_size+nBlk-1)/nBlk) );
+ assert( ((iWrite+1)%nBlk)==0 );
+ for(/*no-op*/; iWrite<nSize; iWrite+=nBlk ){
+ nWrite = seekAndWrite(pFile, iWrite, "", 1);
+ if( nWrite!=1 ) return SQLITE_IOERR_WRITE;
+ }
+ if( nWrite==0 || (nSize%nBlk) ){
+ nWrite = seekAndWrite(pFile, nSize-1, "", 1);
if( nWrite!=1 ) return SQLITE_IOERR_WRITE;
- iWrite += nBlk;
}
#endif
}
int rc;
if( pFile->szChunk<=0 ){
if( robust_ftruncate(pFile->h, nByte) ){
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath);
}
}
static int unixFileControl(sqlite3_file *id, int op, void *pArg){
unixFile *pFile = (unixFile*)id;
switch( op ){
+ case SQLITE_FCNTL_WAL_BLOCK: {
+ /* pFile->ctrlFlags |= UNIXFILE_BLOCK; // Deferred feature */
+ return SQLITE_OK;
+ }
case SQLITE_FCNTL_LOCKSTATE: {
*(int*)pArg = pFile->eFileLock;
return SQLITE_OK;
}
- case SQLITE_LAST_ERRNO: {
+ case SQLITE_FCNTL_LAST_ERRNO: {
*(int*)pArg = pFile->lastErrno;
return SQLITE_OK;
}
}
#endif
#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__)
- case SQLITE_SET_LOCKPROXYFILE:
- case SQLITE_GET_LOCKPROXYFILE: {
+ case SQLITE_FCNTL_SET_LOCKPROXYFILE:
+ case SQLITE_FCNTL_GET_LOCKPROXYFILE: {
return proxyFileControl(id,op,pArg);
}
#endif /* SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) */
** Instead, it should be called via macro osGetpagesize().
*/
static int unixGetpagesize(void){
-#if defined(_BSD_SOURCE)
+#if OS_VXWORKS
+ return 1024;
+#elif defined(_BSD_SOURCE)
return getpagesize();
#else
return (int)sysconf(_SC_PAGESIZE);
** otherwise.
*/
static int unixShmSystemLock(
- unixShmNode *pShmNode, /* Apply locks to this open shared-memory segment */
+ unixFile *pFile, /* Open connection to the WAL file */
int lockType, /* F_UNLCK, F_RDLCK, or F_WRLCK */
int ofst, /* First byte of the locking range */
int n /* Number of bytes to lock */
){
- struct flock f; /* The posix advisory locking structure */
- int rc = SQLITE_OK; /* Result code form fcntl() */
+ unixShmNode *pShmNode; /* Apply locks to this open shared-memory segment */
+ struct flock f; /* The posix advisory locking structure */
+ int rc = SQLITE_OK; /* Result code form fcntl() */
/* Access to the unixShmNode object is serialized by the caller */
+ pShmNode = pFile->pInode->pShmNode;
assert( sqlite3_mutex_held(pShmNode->mutex) || pShmNode->nRef==0 );
/* Shared locks never span more than one byte */
assert( n>=1 && n<SQLITE_SHM_NLOCK );
if( pShmNode->h>=0 ){
+ int lkType;
/* Initialize the locking parameters */
memset(&f, 0, sizeof(f));
f.l_type = lockType;
f.l_start = ofst;
f.l_len = n;
- rc = osFcntl(pShmNode->h, F_SETLK, &f);
+ lkType = (pFile->ctrlFlags & UNIXFILE_BLOCK)!=0 ? F_SETLKW : F_SETLK;
+ rc = osFcntl(pShmNode->h, lkType, &f);
rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;
+ pFile->ctrlFlags &= ~UNIXFILE_BLOCK;
}
/* Update the global lock state and do debug tracing */
pShmNode = pInode->pShmNode;
if( pShmNode==0 ){
struct stat sStat; /* fstat() info for database file */
+#ifndef SQLITE_SHM_DIRECTORY
+ const char *zBasePath = pDbFd->zPath;
+#endif
/* Call fstat() to figure out the permissions on the database file. If
** a new *-shm file is created, an attempt will be made to create it
#ifdef SQLITE_SHM_DIRECTORY
nShmFilename = sizeof(SQLITE_SHM_DIRECTORY) + 31;
#else
- nShmFilename = 6 + (int)strlen(pDbFd->zPath);
+ nShmFilename = 6 + (int)strlen(zBasePath);
#endif
pShmNode = sqlite3_malloc( sizeof(*pShmNode) + nShmFilename );
if( pShmNode==0 ){
SQLITE_SHM_DIRECTORY "/sqlite-shm-%x-%x",
(u32)sStat.st_ino, (u32)sStat.st_dev);
#else
- sqlite3_snprintf(nShmFilename, zShmFilename, "%s-shm", pDbFd->zPath);
+ sqlite3_snprintf(nShmFilename, zShmFilename, "%s-shm", zBasePath);
sqlite3FileSuffix3(pDbFd->zPath, zShmFilename);
#endif
pShmNode->h = -1;
** If not, truncate the file to zero length.
*/
rc = SQLITE_OK;
- if( unixShmSystemLock(pShmNode, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){
+ if( unixShmSystemLock(pDbFd, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){
if( robust_ftruncate(pShmNode->h, 0) ){
rc = unixLogError(SQLITE_IOERR_SHMOPEN, "ftruncate", zShmFilename);
}
}
if( rc==SQLITE_OK ){
- rc = unixShmSystemLock(pShmNode, F_RDLCK, UNIX_SHM_DMS, 1);
+ rc = unixShmSystemLock(pDbFd, F_RDLCK, UNIX_SHM_DMS, 1);
}
if( rc ) goto shm_open_err;
}
/* Unlock the system-level locks */
if( (mask & allMask)==0 ){
- rc = unixShmSystemLock(pShmNode, F_UNLCK, ofst+UNIX_SHM_BASE, n);
+ rc = unixShmSystemLock(pDbFd, F_UNLCK, ofst+UNIX_SHM_BASE, n);
}else{
rc = SQLITE_OK;
}
/* Get shared locks at the system level, if necessary */
if( rc==SQLITE_OK ){
if( (allShared & mask)==0 ){
- rc = unixShmSystemLock(pShmNode, F_RDLCK, ofst+UNIX_SHM_BASE, n);
+ rc = unixShmSystemLock(pDbFd, F_RDLCK, ofst+UNIX_SHM_BASE, n);
}else{
rc = SQLITE_OK;
}
** also mark the local connection as being locked.
*/
if( rc==SQLITE_OK ){
- rc = unixShmSystemLock(pShmNode, F_WRLCK, ofst+UNIX_SHM_BASE, n);
+ rc = unixShmSystemLock(pDbFd, F_WRLCK, ofst+UNIX_SHM_BASE, n);
if( rc==SQLITE_OK ){
assert( (p->sharedMask & mask)==0 );
p->exclMask |= mask;
}
sqlite3_mutex_leave(pShmNode->mutex);
OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x\n",
- p->id, getpid(), p->sharedMask, p->exclMask));
+ p->id, osGetpid(0), p->sharedMask, p->exclMask));
return rc;
}
assert( pShmNode->nRef>0 );
pShmNode->nRef--;
if( pShmNode->nRef==0 ){
- if( deleteFlag && pShmNode->h>=0 ) osUnlink(pShmNode->zFilename);
+ if( deleteFlag && pShmNode->h>=0 ){
+ osUnlink(pShmNode->zFilename);
+ }
unixShmPurge(pDbFd);
}
unixLeaveMutex();
** * An I/O method finder function called FINDER that returns a pointer
** to the METHOD object in the previous bullet.
*/
-#define IOMETHODS(FINDER, METHOD, VERSION, CLOSE, LOCK, UNLOCK, CKLOCK, SHMMAP) \
+#define IOMETHODS(FINDER,METHOD,VERSION,CLOSE,LOCK,UNLOCK,CKLOCK,SHMMAP) \
static const sqlite3_io_methods METHOD = { \
VERSION, /* iVersion */ \
CLOSE, /* xClose */ \
0 /* xShmMap method */
)
-#if SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS
+#if SQLITE_ENABLE_LOCKING_STYLE
IOMETHODS(
flockIoFinder, /* Finder function name */
flockIoMethods, /* sqlite3_io_methods object name */
semIoFinder, /* Finder function name */
semIoMethods, /* sqlite3_io_methods object name */
1, /* shared memory is disabled */
- semClose, /* xClose method */
- semLock, /* xLock method */
- semUnlock, /* xUnlock method */
- semCheckReservedLock, /* xCheckReservedLock method */
+ semXClose, /* xClose method */
+ semXLock, /* xLock method */
+ semXUnlock, /* xUnlock method */
+ semXCheckReservedLock, /* xCheckReservedLock method */
0 /* xShmMap method */
)
#endif
#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */
-#if OS_VXWORKS && SQLITE_ENABLE_LOCKING_STYLE
-/*
-** This "finder" function attempts to determine the best locking strategy
-** for the database file "filePath". It then returns the sqlite3_io_methods
-** object that implements that strategy.
-**
-** This is for VXWorks only.
+#if OS_VXWORKS
+/*
+** This "finder" function for VxWorks checks to see if posix advisory
+** locking works. If it does, then that is what is used. If it does not
+** work, then fallback to named semaphore locking.
*/
-static const sqlite3_io_methods *autolockIoFinderImpl(
+static const sqlite3_io_methods *vxworksIoFinderImpl(
const char *filePath, /* name of the database file */
unixFile *pNew /* the open file object */
){
}
}
static const sqlite3_io_methods
- *(*const autolockIoFinder)(const char*,unixFile*) = autolockIoFinderImpl;
+ *(*const vxworksIoFinder)(const char*,unixFile*) = vxworksIoFinderImpl;
-#endif /* OS_VXWORKS && SQLITE_ENABLE_LOCKING_STYLE */
+#endif /* OS_VXWORKS */
/*
** An abstract type for a pointer to an IO method finder function:
}
#endif
- pNew->lastErrno = 0;
+ storeLastErrno(pNew, 0);
#if OS_VXWORKS
if( rc!=SQLITE_OK ){
if( h>=0 ) robust_close(pNew, h, __LINE__);
** the same instant might all reset the PRNG. But multiple resets
** are harmless.
*/
- if( randomnessPid!=getpid() ){
- randomnessPid = getpid();
+ if( randomnessPid!=osGetpid(0) ){
+ randomnessPid = osGetpid(0);
sqlite3_randomness(0,0);
}
#if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE
if( fstatfs(fd, &fsInfo) == -1 ){
- ((unixFile*)pFile)->lastErrno = errno;
+ storeLastErrno(p, errno);
robust_close(p, fd, __LINE__);
return SQLITE_IOERR_ACCESS;
}
if (0 == strncmp("msdos", fsInfo.f_fstypename, 5)) {
((unixFile*)pFile)->fsFlags |= SQLITE_FSFLAGS_IS_MSDOS;
}
+ if (0 == strncmp("exfat", fsInfo.f_fstypename, 5)) {
+ ((unixFile*)pFile)->fsFlags |= SQLITE_FSFLAGS_IS_MSDOS;
+ }
#endif
/* Set up appropriate ctrlFlags */
if( envforce!=NULL ){
useProxy = atoi(envforce)>0;
}else{
- if( statfs(zPath, &fsInfo) == -1 ){
- /* In theory, the close(fd) call is sub-optimal. If the file opened
- ** with fd is a database file, and there are other connections open
- ** on that file that are currently holding advisory locks on it,
- ** then the call to close() will cancel those locks. In practice,
- ** we're assuming that statfs() doesn't fail very often. At least
- ** not while other file descriptors opened by the same process on
- ** the same file are working. */
- p->lastErrno = errno;
- robust_close(p, fd, __LINE__);
- rc = SQLITE_IOERR_ACCESS;
- goto open_finished;
- }
useProxy = !(fsInfo.f_flags&MNT_LOCAL);
}
if( useProxy ){
** tests repeatable.
*/
memset(zBuf, 0, nBuf);
- randomnessPid = getpid();
+ randomnessPid = osGetpid(0);
#if !defined(SQLITE_TEST)
{
int fd, got;
**
** C APIs
**
-** sqlite3_file_control(db, dbname, SQLITE_SET_LOCKPROXYFILE,
+** sqlite3_file_control(db, dbname, SQLITE_FCNTL_SET_LOCKPROXYFILE,
** <proxy_path> | ":auto:");
-** sqlite3_file_control(db, dbname, SQLITE_GET_LOCKPROXYFILE, &<proxy_path>);
+** sqlite3_file_control(db, dbname, SQLITE_FCNTL_GET_LOCKPROXYFILE,
+** &<proxy_path>);
**
**
** SQL pragmas
** setting the environment variable SQLITE_FORCE_PROXY_LOCKING to 1 will
** force proxy locking to be used for every database file opened, and 0
** will force automatic proxy locking to be disabled for all database
-** files (explicitly calling the SQLITE_SET_LOCKPROXYFILE pragma or
+** files (explicitly calling the SQLITE_FCNTL_SET_LOCKPROXYFILE pragma or
** sqlite_file_control API is not affected by SQLITE_FORCE_PROXY_LOCKING).
*/
char *lockProxyPath; /* Name of the proxy lock file */
char *dbPath; /* Name of the open file */
int conchHeld; /* 1 if the conch is held, -1 if lockless */
+ int nFails; /* Number of conch taking failures */
void *oldLockingContext; /* Original lockingcontext to restore on close */
sqlite3_io_methods const *pOldMethod; /* Original I/O methods for close */
};
{
if( !confstr(_CS_DARWIN_USER_TEMP_DIR, lPath, maxLen) ){
OSTRACE(("GETLOCKPATH failed %s errno=%d pid=%d\n",
- lPath, errno, getpid()));
+ lPath, errno, osGetpid(0)));
return SQLITE_IOERR_LOCK;
}
len = strlcat(lPath, "sqliteplocks", maxLen);
}
lPath[i+len]='\0';
strlcat(lPath, ":auto:", maxLen);
- OSTRACE(("GETLOCKPATH proxy lock path=%s pid=%d\n", lPath, getpid()));
+ OSTRACE(("GETLOCKPATH proxy lock path=%s pid=%d\n", lPath, osGetpid(0)));
return SQLITE_OK;
}
if( err!=EEXIST ) {
OSTRACE(("CREATELOCKPATH FAILED creating %s, "
"'%s' proxy lock path=%s pid=%d\n",
- buf, strerror(err), lockPath, getpid()));
+ buf, strerror(err), lockPath, osGetpid(0)));
return err;
}
}
}
buf[i] = lockPath[i];
}
- OSTRACE(("CREATELOCKPATH proxy lock path=%s pid=%d\n", lockPath, getpid()));
+ OSTRACE(("CREATELOCKPATH proxy lock path=%s pid=%d\n", lockPath, osGetpid(0)));
return 0;
}
static int proxyGetHostID(unsigned char *pHostID, int *pError){
assert(PROXY_HOSTIDLEN == sizeof(uuid_t));
memset(pHostID, 0, PROXY_HOSTIDLEN);
-#if defined(__MAX_OS_X_VERSION_MIN_REQUIRED)\
- && __MAC_OS_X_VERSION_MIN_REQUIRED<1050
+# if defined(__APPLE__) && ((__MAC_OS_X_VERSION_MIN_REQUIRED > 1050) || \
+ (__IPHONE_OS_VERSION_MIN_REQUIRED > 2000))
{
- static const struct timespec timeout = {1, 0}; /* 1 sec timeout */
+ struct timespec timeout = {1, 0}; /* 1 sec timeout */
if( gethostuuid(pHostID, &timeout) ){
int err = errno;
if( pError ){
*/
struct stat buf;
if( osFstat(conchFile->h, &buf) ){
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
return SQLITE_IOERR_LOCK;
}
char tBuf[PROXY_MAXCONCHLEN];
int len = osPread(conchFile->h, tBuf, PROXY_MAXCONCHLEN, 0);
if( len<0 ){
- pFile->lastErrno = errno;
+ storeLastErrno(pFile, errno);
return SQLITE_IOERR_LOCK;
}
if( len>PROXY_PATHINDEX && tBuf[0]==(char)PROXY_CONCHVERSION){
if( 0==proxyBreakConchLock(pFile, myHostID) ){
rc = SQLITE_OK;
if( lockType==EXCLUSIVE_LOCK ){
- rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, SHARED_LOCK);
+ rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, SHARED_LOCK);
}
if( !rc ){
rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, lockType);
int forceNewLockPath = 0;
OSTRACE(("TAKECONCH %d for %s pid=%d\n", conchFile->h,
- (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), getpid()));
+ (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"),
+ osGetpid(0)));
rc = proxyGetHostID(myHostID, &pError);
if( (rc&0xff)==SQLITE_IOERR ){
- pFile->lastErrno = pError;
+ storeLastErrno(pFile, pError);
goto end_takeconch;
}
rc = proxyConchLock(pFile, myHostID, SHARED_LOCK);
readLen = seekAndRead((unixFile*)conchFile, 0, readBuf, PROXY_MAXCONCHLEN);
if( readLen<0 ){
/* I/O error: lastErrno set by seekAndRead */
- pFile->lastErrno = conchFile->lastErrno;
+ storeLastErrno(pFile, conchFile->lastErrno);
rc = SQLITE_IOERR_READ;
goto end_takeconch;
}else if( readLen<=(PROXY_HEADERLEN+PROXY_HOSTIDLEN) ||
rc = proxyConchLock(pFile, myHostID, EXCLUSIVE_LOCK);
}
}else{
- rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, EXCLUSIVE_LOCK);
+ rc = proxyConchLock(pFile, myHostID, EXCLUSIVE_LOCK);
}
if( rc==SQLITE_OK ){
char writeBuffer[PROXY_MAXCONCHLEN];
writeBuffer[0] = (char)PROXY_CONCHVERSION;
memcpy(&writeBuffer[PROXY_HEADERLEN], myHostID, PROXY_HOSTIDLEN);
if( pCtx->lockProxyPath!=NULL ){
- strlcpy(&writeBuffer[PROXY_PATHINDEX], pCtx->lockProxyPath, MAXPATHLEN);
+ strlcpy(&writeBuffer[PROXY_PATHINDEX], pCtx->lockProxyPath,
+ MAXPATHLEN);
}else{
strlcpy(&writeBuffer[PROXY_PATHINDEX], tempLockPath, MAXPATHLEN);
}
conchFile = pCtx->conchFile;
OSTRACE(("RELEASECONCH %d for %s pid=%d\n", conchFile->h,
(pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"),
- getpid()));
+ osGetpid(0)));
if( pCtx->conchHeld>0 ){
rc = conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK);
}
/* afp style keeps a reference to the db path in the filePath field
** of the struct */
assert( (int)strlen((char*)pFile->lockingContext)<=MAXPATHLEN );
- strlcpy(dbPath, ((afpLockingContext *)pFile->lockingContext)->dbPath, MAXPATHLEN);
+ strlcpy(dbPath, ((afpLockingContext *)pFile->lockingContext)->dbPath,
+ MAXPATHLEN);
} else
#endif
if( pFile->pMethod == &dotlockIoMethods ){
}
OSTRACE(("TRANSPROXY %d for %s pid=%d\n", pFile->h,
- (lockPath ? lockPath : ":auto:"), getpid()));
+ (lockPath ? lockPath : ":auto:"), osGetpid(0)));
pCtx = sqlite3_malloc( sizeof(*pCtx) );
if( pCtx==0 ){
*/
static int proxyFileControl(sqlite3_file *id, int op, void *pArg){
switch( op ){
- case SQLITE_GET_LOCKPROXYFILE: {
+ case SQLITE_FCNTL_GET_LOCKPROXYFILE: {
unixFile *pFile = (unixFile*)id;
if( pFile->pMethod == &proxyIoMethods ){
proxyLockingContext *pCtx = (proxyLockingContext*)pFile->lockingContext;
}
return SQLITE_OK;
}
- case SQLITE_SET_LOCKPROXYFILE: {
+ case SQLITE_FCNTL_SET_LOCKPROXYFILE: {
unixFile *pFile = (unixFile*)id;
int rc = SQLITE_OK;
int isProxyStyle = (pFile->pMethod == &proxyIoMethods);
if( pArg==NULL || (const char *)pArg==0 ){
if( isProxyStyle ){
- /* turn off proxy locking - not supported */
+ /* turn off proxy locking - not supported. If support is added for
+ ** switching proxy locking mode off then it will need to fail if
+ ** the journal mode is WAL mode.
+ */
rc = SQLITE_ERROR /*SQLITE_PROTOCOL? SQLITE_MISUSE?*/;
}else{
/* turn off proxy locking - already off - NOOP */
** necessarily been initialized when this routine is called, and so they
** should not be used.
*/
-SQLITE_API int sqlite3_os_init(void){
+SQLITE_API int SQLITE_STDCALL sqlite3_os_init(void){
/*
** The following macro defines an initializer for an sqlite3_vfs object.
** The name of the VFS is NAME. The pAppData is a pointer to a pointer
** array cannot be const.
*/
static sqlite3_vfs aVfs[] = {
-#if SQLITE_ENABLE_LOCKING_STYLE && (OS_VXWORKS || defined(__APPLE__))
+#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__)
UNIXVFS("unix", autolockIoFinder ),
+#elif OS_VXWORKS
+ UNIXVFS("unix", vxworksIoFinder ),
#else
UNIXVFS("unix", posixIoFinder ),
#endif
#if OS_VXWORKS
UNIXVFS("unix-namedsem", semIoFinder ),
#endif
-#if SQLITE_ENABLE_LOCKING_STYLE
+#if SQLITE_ENABLE_LOCKING_STYLE || OS_VXWORKS
UNIXVFS("unix-posix", posixIoFinder ),
-#if !OS_VXWORKS
- UNIXVFS("unix-flock", flockIoFinder ),
#endif
+#if SQLITE_ENABLE_LOCKING_STYLE
+ UNIXVFS("unix-flock", flockIoFinder ),
#endif
#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__)
UNIXVFS("unix-afp", afpIoFinder ),
** to release dynamically allocated objects. But not on unix.
** This routine is a no-op for unix.
*/
-SQLITE_API int sqlite3_os_end(void){
+SQLITE_API int SQLITE_STDCALL sqlite3_os_end(void){
return SQLITE_OK;
}
with SQLITE_OMIT_WAL."
#endif
+#if !SQLITE_OS_WINNT && SQLITE_MAX_MMAP_SIZE>0
+# error "Memory mapped files require support from the Windows NT kernel,\
+ compile with SQLITE_MAX_MMAP_SIZE=0."
+#endif
+
/*
** Are most of the Win32 ANSI APIs available (i.e. with certain exceptions
** based on the sub-platform)?
/*
** Do we need to manually define the Win32 file mapping APIs for use with WAL
-** mode (e.g. these APIs are available in the Windows CE SDK; however, they
-** are not present in the header file)?
+** mode or memory mapped files (e.g. these APIs are available in the Windows
+** CE SDK; however, they are not present in the header file)?
*/
-#if SQLITE_WIN32_FILEMAPPING_API && !defined(SQLITE_OMIT_WAL)
+#if SQLITE_WIN32_FILEMAPPING_API && \
+ (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0)
/*
** Two of the file mapping APIs are different under WinRT. Figure out which
** set we need.
#endif /* SQLITE_OS_WINRT */
/*
-** This file mapping API is common to both Win32 and WinRT.
+** These file mapping APIs are common to both Win32 and WinRT.
*/
+
+WINBASEAPI BOOL WINAPI FlushViewOfFile(LPCVOID, SIZE_T);
WINBASEAPI BOOL WINAPI UnmapViewOfFile(LPCVOID);
-#endif /* SQLITE_WIN32_FILEMAPPING_API && !defined(SQLITE_OMIT_WAL) */
+#endif /* SQLITE_WIN32_FILEMAPPING_API */
/*
** Some Microsoft compilers lack this definition.
LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE))aSyscall[5].pCurrent)
#if (!SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_ANSI) && \
- !defined(SQLITE_OMIT_WAL))
+ (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0))
{ "CreateFileMappingA", (SYSCALL)CreateFileMappingA, 0 },
#else
{ "CreateFileMappingA", (SYSCALL)0, 0 },
DWORD,DWORD,DWORD,LPCSTR))aSyscall[6].pCurrent)
#if SQLITE_OS_WINCE || (!SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE) && \
- !defined(SQLITE_OMIT_WAL))
+ (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0))
{ "CreateFileMappingW", (SYSCALL)CreateFileMappingW, 0 },
#else
{ "CreateFileMappingW", (SYSCALL)0, 0 },
LPOVERLAPPED))aSyscall[48].pCurrent)
#endif
-#if SQLITE_OS_WINCE || (!SQLITE_OS_WINRT && !defined(SQLITE_OMIT_WAL))
+#if SQLITE_OS_WINCE || (!SQLITE_OS_WINRT && \
+ (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0))
{ "MapViewOfFile", (SYSCALL)MapViewOfFile, 0 },
#else
{ "MapViewOfFile", (SYSCALL)0, 0 },
#define osUnlockFileEx ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
LPOVERLAPPED))aSyscall[58].pCurrent)
-#if SQLITE_OS_WINCE || !defined(SQLITE_OMIT_WAL)
+#if SQLITE_OS_WINCE || !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0
{ "UnmapViewOfFile", (SYSCALL)UnmapViewOfFile, 0 },
#else
{ "UnmapViewOfFile", (SYSCALL)0, 0 },
#define osGetFileInformationByHandleEx ((BOOL(WINAPI*)(HANDLE, \
FILE_INFO_BY_HANDLE_CLASS,LPVOID,DWORD))aSyscall[66].pCurrent)
-#if SQLITE_OS_WINRT && !defined(SQLITE_OMIT_WAL)
+#if SQLITE_OS_WINRT && (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0)
{ "MapViewOfFileFromApp", (SYSCALL)MapViewOfFileFromApp, 0 },
#else
{ "MapViewOfFileFromApp", (SYSCALL)0, 0 },
#define osGetProcessHeap ((HANDLE(WINAPI*)(VOID))aSyscall[74].pCurrent)
-#if SQLITE_OS_WINRT && !defined(SQLITE_OMIT_WAL)
+#if SQLITE_OS_WINRT && (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0)
{ "CreateFileMappingFromApp", (SYSCALL)CreateFileMappingFromApp, 0 },
#else
{ "CreateFileMappingFromApp", (SYSCALL)0, 0 },
SQLITE_WIN32_VOLATILE*, LONG,LONG))aSyscall[76].pCurrent)
#endif /* defined(InterlockedCompareExchange) */
+#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID
+ { "UuidCreate", (SYSCALL)UuidCreate, 0 },
+#else
+ { "UuidCreate", (SYSCALL)0, 0 },
+#endif
+
+#define osUuidCreate ((RPC_STATUS(RPC_ENTRY*)(UUID*))aSyscall[77].pCurrent)
+
+#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID
+ { "UuidCreateSequential", (SYSCALL)UuidCreateSequential, 0 },
+#else
+ { "UuidCreateSequential", (SYSCALL)0, 0 },
+#endif
+
+#define osUuidCreateSequential \
+ ((RPC_STATUS(RPC_ENTRY*)(UUID*))aSyscall[78].pCurrent)
+
+#if !defined(SQLITE_NO_SYNC) && SQLITE_MAX_MMAP_SIZE>0
+ { "FlushViewOfFile", (SYSCALL)FlushViewOfFile, 0 },
+#else
+ { "FlushViewOfFile", (SYSCALL)0, 0 },
+#endif
+
+#define osFlushViewOfFile \
+ ((BOOL(WINAPI*)(LPCVOID,SIZE_T))aSyscall[79].pCurrent)
+
}; /* End of the overrideable system calls */
/*
** "pnLargest" argument, if non-zero, will be used to return the size of the
** largest committed free block in the heap, in bytes.
*/
-SQLITE_API int sqlite3_win32_compact_heap(LPUINT pnLargest){
+SQLITE_API int SQLITE_STDCALL sqlite3_win32_compact_heap(LPUINT pnLargest){
int rc = SQLITE_OK;
UINT nLargest = 0;
HANDLE hHeap;
** the sqlite3_memory_used() function does not return zero, SQLITE_BUSY will
** be returned and no changes will be made to the Win32 native heap.
*/
-SQLITE_API int sqlite3_win32_reset_heap(){
+SQLITE_API int SQLITE_STDCALL sqlite3_win32_reset_heap(){
int rc;
MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */
MUTEX_LOGIC( sqlite3_mutex *pMem; ) /* The memsys static mutex */
- MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
- MUTEX_LOGIC( pMem = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); )
+ MUTEX_LOGIC( pMaster = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MASTER); )
+ MUTEX_LOGIC( pMem = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MEM); )
sqlite3_mutex_enter(pMaster);
sqlite3_mutex_enter(pMem);
winMemAssertMagic();
** (if available).
*/
-SQLITE_API void sqlite3_win32_write_debug(const char *zBuf, int nBuf){
+SQLITE_API void SQLITE_STDCALL sqlite3_win32_write_debug(const char *zBuf, int nBuf){
char zDbgBuf[SQLITE_WIN32_DBG_BUF_SIZE];
int nMin = MIN(nBuf, (SQLITE_WIN32_DBG_BUF_SIZE - 1)); /* may be negative. */
if( nMin<-1 ) nMin = -1; /* all negative values become -1. */
static HANDLE sleepObj = NULL;
#endif
-SQLITE_API void sqlite3_win32_sleep(DWORD milliseconds){
+SQLITE_API void SQLITE_STDCALL sqlite3_win32_sleep(DWORD milliseconds){
#if SQLITE_OS_WINRT
if ( sleepObj==NULL ){
sleepObj = osCreateEventExW(NULL, NULL, CREATE_EVENT_MANUAL_RESET,
** This function determines if the machine is running a version of Windows
** based on the NT kernel.
*/
-SQLITE_API int sqlite3_win32_is_nt(void){
+SQLITE_API int SQLITE_STDCALL sqlite3_win32_is_nt(void){
#if SQLITE_OS_WINRT
/*
** NOTE: The WinRT sub-platform is always assumed to be based on the NT
** Convert multibyte character string to UTF-8. Space to hold the
** returned string is obtained from sqlite3_malloc().
*/
-SQLITE_API char *sqlite3_win32_mbcs_to_utf8(const char *zFilename){
+SQLITE_API char *SQLITE_STDCALL sqlite3_win32_mbcs_to_utf8(const char *zFilename){
char *zFilenameUtf8;
LPWSTR zTmpWide;
** Convert UTF-8 to multibyte character string. Space to hold the
** returned string is obtained from sqlite3_malloc().
*/
-SQLITE_API char *sqlite3_win32_utf8_to_mbcs(const char *zFilename){
+SQLITE_API char *SQLITE_STDCALL sqlite3_win32_utf8_to_mbcs(const char *zFilename){
char *zFilenameMbcs;
LPWSTR zTmpWide;
** argument is the name of the directory to use. The return value will be
** SQLITE_OK if successful.
*/
-SQLITE_API int sqlite3_win32_set_directory(DWORD type, LPCWSTR zValue){
+SQLITE_API int SQLITE_STDCALL sqlite3_win32_set_directory(DWORD type, LPCWSTR zValue){
char **ppDirectory = 0;
#ifndef SQLITE_OMIT_AUTOINIT
int rc = sqlite3_initialize();
/*
** Log a I/O error retry episode.
*/
-static void winLogIoerr(int nRetry){
+static void winLogIoerr(int nRetry, int lineno){
if( nRetry ){
- sqlite3_log(SQLITE_IOERR,
- "delayed %dms for lock/sharing conflict",
- winIoerrRetryDelay*nRetry*(nRetry+1)/2
+ sqlite3_log(SQLITE_NOTICE,
+ "delayed %dms for lock/sharing conflict at line %d",
+ winIoerrRetryDelay*nRetry*(nRetry+1)/2, lineno
);
}
}
assert( pFile->pShm==0 );
#endif
assert( pFile->h!=NULL && pFile->h!=INVALID_HANDLE_VALUE );
- OSTRACE(("CLOSE file=%p\n", pFile->h));
+ OSTRACE(("CLOSE pid=%lu, pFile=%p, file=%p\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
#if SQLITE_MAX_MMAP_SIZE>0
winUnmapfile(pFile);
pFile->h = NULL;
}
OpenCounter(-1);
- OSTRACE(("CLOSE file=%p, rc=%s\n", pFile->h, rc ? "ok" : "failed"));
+ OSTRACE(("CLOSE pid=%lu, pFile=%p, file=%p, rc=%s\n",
+ osGetCurrentProcessId(), pFile, pFile->h, rc ? "ok" : "failed"));
return rc ? SQLITE_OK
: winLogError(SQLITE_IOERR_CLOSE, osGetLastError(),
"winClose", pFile->zPath);
int amt, /* Number of bytes to read */
sqlite3_int64 offset /* Begin reading at this offset */
){
-#if !SQLITE_OS_WINCE
+#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
OVERLAPPED overlapped; /* The offset for ReadFile. */
#endif
winFile *pFile = (winFile*)id; /* file handle */
assert( amt>0 );
assert( offset>=0 );
SimulateIOError(return SQLITE_IOERR_READ);
- OSTRACE(("READ file=%p, buffer=%p, amount=%d, offset=%lld, lock=%d\n",
+ OSTRACE(("READ pid=%lu, pFile=%p, file=%p, buffer=%p, amount=%d, "
+ "offset=%lld, lock=%d\n", osGetCurrentProcessId(), pFile,
pFile->h, pBuf, amt, offset, pFile->locktype));
#if SQLITE_MAX_MMAP_SIZE>0
if( offset<pFile->mmapSize ){
if( offset+amt <= pFile->mmapSize ){
memcpy(pBuf, &((u8 *)(pFile->pMapRegion))[offset], amt);
- OSTRACE(("READ-MMAP file=%p, rc=SQLITE_OK\n", pFile->h));
+ OSTRACE(("READ-MMAP pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return SQLITE_OK;
}else{
int nCopy = (int)(pFile->mmapSize - offset);
}
#endif
-#if SQLITE_OS_WINCE
+#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED)
if( winSeekFile(pFile, offset) ){
- OSTRACE(("READ file=%p, rc=SQLITE_FULL\n", pFile->h));
+ OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_FULL\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return SQLITE_FULL;
}
while( !osReadFile(pFile->h, pBuf, amt, &nRead, 0) ){
DWORD lastErrno;
if( winRetryIoerr(&nRetry, &lastErrno) ) continue;
pFile->lastErrno = lastErrno;
- OSTRACE(("READ file=%p, rc=SQLITE_IOERR_READ\n", pFile->h));
+ OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_READ\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return winLogError(SQLITE_IOERR_READ, pFile->lastErrno,
"winRead", pFile->zPath);
}
- winLogIoerr(nRetry);
+ winLogIoerr(nRetry, __LINE__);
if( nRead<(DWORD)amt ){
/* Unread parts of the buffer must be zero-filled */
memset(&((char*)pBuf)[nRead], 0, amt-nRead);
- OSTRACE(("READ file=%p, rc=SQLITE_IOERR_SHORT_READ\n", pFile->h));
+ OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_SHORT_READ\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return SQLITE_IOERR_SHORT_READ;
}
- OSTRACE(("READ file=%p, rc=SQLITE_OK\n", pFile->h));
+ OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return SQLITE_OK;
}
SimulateIOError(return SQLITE_IOERR_WRITE);
SimulateDiskfullError(return SQLITE_FULL);
- OSTRACE(("WRITE file=%p, buffer=%p, amount=%d, offset=%lld, lock=%d\n",
+ OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, buffer=%p, amount=%d, "
+ "offset=%lld, lock=%d\n", osGetCurrentProcessId(), pFile,
pFile->h, pBuf, amt, offset, pFile->locktype));
#if SQLITE_MAX_MMAP_SIZE>0
if( offset<pFile->mmapSize ){
if( offset+amt <= pFile->mmapSize ){
memcpy(&((u8 *)(pFile->pMapRegion))[offset], pBuf, amt);
- OSTRACE(("WRITE-MMAP file=%p, rc=SQLITE_OK\n", pFile->h));
+ OSTRACE(("WRITE-MMAP pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return SQLITE_OK;
}else{
int nCopy = (int)(pFile->mmapSize - offset);
}
#endif
-#if SQLITE_OS_WINCE
+#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED)
rc = winSeekFile(pFile, offset);
if( rc==0 ){
#else
{
#endif
-#if !SQLITE_OS_WINCE
+#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
OVERLAPPED overlapped; /* The offset for WriteFile. */
#endif
u8 *aRem = (u8 *)pBuf; /* Data yet to be written */
DWORD nWrite; /* Bytes written by each WriteFile() call */
DWORD lastErrno = NO_ERROR; /* Value returned by GetLastError() */
-#if !SQLITE_OS_WINCE
+#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
memset(&overlapped, 0, sizeof(OVERLAPPED));
overlapped.Offset = (LONG)(offset & 0xffffffff);
overlapped.OffsetHigh = (LONG)((offset>>32) & 0x7fffffff);
#endif
while( nRem>0 ){
-#if SQLITE_OS_WINCE
+#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED)
if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, 0) ){
#else
if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, &overlapped) ){
lastErrno = osGetLastError();
break;
}
-#if !SQLITE_OS_WINCE
+#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
offset += nWrite;
overlapped.Offset = (LONG)(offset & 0xffffffff);
overlapped.OffsetHigh = (LONG)((offset>>32) & 0x7fffffff);
if( rc ){
if( ( pFile->lastErrno==ERROR_HANDLE_DISK_FULL )
|| ( pFile->lastErrno==ERROR_DISK_FULL )){
- OSTRACE(("WRITE file=%p, rc=SQLITE_FULL\n", pFile->h));
+ OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, rc=SQLITE_FULL\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return winLogError(SQLITE_FULL, pFile->lastErrno,
"winWrite1", pFile->zPath);
}
- OSTRACE(("WRITE file=%p, rc=SQLITE_IOERR_WRITE\n", pFile->h));
+ OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_WRITE\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return winLogError(SQLITE_IOERR_WRITE, pFile->lastErrno,
"winWrite2", pFile->zPath);
}else{
- winLogIoerr(nRetry);
+ winLogIoerr(nRetry, __LINE__);
}
- OSTRACE(("WRITE file=%p, rc=SQLITE_OK\n", pFile->h));
+ OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return SQLITE_OK;
}
assert( pFile );
SimulateIOError(return SQLITE_IOERR_TRUNCATE);
- OSTRACE(("TRUNCATE file=%p, size=%lld, lock=%d\n",
- pFile->h, nByte, pFile->locktype));
+ OSTRACE(("TRUNCATE pid=%lu, pFile=%p, file=%p, size=%lld, lock=%d\n",
+ osGetCurrentProcessId(), pFile, pFile->h, nByte, pFile->locktype));
/* If the user has configured a chunk-size for this file, truncate the
** file so that it consists of an integer number of chunks (i.e. the
}
#endif
- OSTRACE(("TRUNCATE file=%p, rc=%s\n", pFile->h, sqlite3ErrName(rc)));
+ OSTRACE(("TRUNCATE pid=%lu, pFile=%p, file=%p, rc=%s\n",
+ osGetCurrentProcessId(), pFile, pFile->h, sqlite3ErrName(rc)));
return rc;
}
*/
SimulateDiskfullError( return SQLITE_FULL );
- OSTRACE(("SYNC file=%p, flags=%x, lock=%d\n",
- pFile->h, flags, pFile->locktype));
+ OSTRACE(("SYNC pid=%lu, pFile=%p, file=%p, flags=%x, lock=%d\n",
+ osGetCurrentProcessId(), pFile, pFile->h, flags,
+ pFile->locktype));
#ifndef SQLITE_TEST
UNUSED_PARAMETER(flags);
** no-op
*/
#ifdef SQLITE_NO_SYNC
- OSTRACE(("SYNC-NOP file=%p, rc=SQLITE_OK\n", pFile->h));
+ OSTRACE(("SYNC-NOP pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return SQLITE_OK;
#else
+#if SQLITE_MAX_MMAP_SIZE>0
+ if( pFile->pMapRegion ){
+ if( osFlushViewOfFile(pFile->pMapRegion, 0) ){
+ OSTRACE(("SYNC-MMAP pid=%lu, pFile=%p, pMapRegion=%p, "
+ "rc=SQLITE_OK\n", osGetCurrentProcessId(),
+ pFile, pFile->pMapRegion));
+ }else{
+ pFile->lastErrno = osGetLastError();
+ OSTRACE(("SYNC-MMAP pid=%lu, pFile=%p, pMapRegion=%p, "
+ "rc=SQLITE_IOERR_MMAP\n", osGetCurrentProcessId(),
+ pFile, pFile->pMapRegion));
+ return winLogError(SQLITE_IOERR_MMAP, pFile->lastErrno,
+ "winSync1", pFile->zPath);
+ }
+ }
+#endif
rc = osFlushFileBuffers(pFile->h);
SimulateIOError( rc=FALSE );
if( rc ){
- OSTRACE(("SYNC file=%p, rc=SQLITE_OK\n", pFile->h));
+ OSTRACE(("SYNC pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return SQLITE_OK;
}else{
pFile->lastErrno = osGetLastError();
- OSTRACE(("SYNC file=%p, rc=SQLITE_IOERR_FSYNC\n", pFile->h));
+ OSTRACE(("SYNC pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_FSYNC\n",
+ osGetCurrentProcessId(), pFile, pFile->h));
return winLogError(SQLITE_IOERR_FSYNC, pFile->lastErrno,
- "winSync", pFile->zPath);
+ "winSync2", pFile->zPath);
}
#endif
}
void volatile **pp /* OUT: Mapped memory */
){
winFile *pDbFd = (winFile*)fd;
- winShm *p = pDbFd->pShm;
+ winShm *pShm = pDbFd->pShm;
winShmNode *pShmNode;
int rc = SQLITE_OK;
- if( !p ){
+ if( !pShm ){
rc = winOpenSharedMemory(pDbFd);
if( rc!=SQLITE_OK ) return rc;
- p = pDbFd->pShm;
+ pShm = pDbFd->pShm;
}
- pShmNode = p->pShmNode;
+ pShmNode = pShm->pShmNode;
sqlite3_mutex_enter(pShmNode->mutex);
assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 );
}
}
#endif
- winLogIoerr(cnt);
+ winLogIoerr(cnt, __LINE__);
OSTRACE(("OPEN file=%p, name=%s, access=%lx, rc=%s\n", h, zUtf8Name,
dwDesiredAccess, (h==INVALID_HANDLE_VALUE) ? "failed" : "ok"));
if( rc && rc!=SQLITE_IOERR_DELETE_NOENT ){
rc = winLogError(SQLITE_IOERR_DELETE, lastErrno, "winDelete", zFilename);
}else{
- winLogIoerr(cnt);
+ winLogIoerr(cnt, __LINE__);
}
sqlite3_free(zConverted);
OSTRACE(("DELETE name=%s, rc=%s\n", zFilename, sqlite3ErrName(rc)));
attr = sAttrData.dwFileAttributes;
}
}else{
- winLogIoerr(cnt);
+ winLogIoerr(cnt, __LINE__);
if( lastErrno!=ERROR_FILE_NOT_FOUND && lastErrno!=ERROR_PATH_NOT_FOUND ){
sqlite3_free(zConverted);
return winLogError(SQLITE_IOERR_ACCESS, lastErrno, "winAccess",
memcpy(&zBuf[n], &i, sizeof(i));
n += sizeof(i);
}
+#endif
+#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID
+ if( sizeof(UUID)<=nBuf-n ){
+ UUID id;
+ memset(&id, 0, sizeof(UUID));
+ osUuidCreate(&id);
+ memcpy(zBuf, &id, sizeof(UUID));
+ n += sizeof(UUID);
+ }
+ if( sizeof(UUID)<=nBuf-n ){
+ UUID id;
+ memset(&id, 0, sizeof(UUID));
+ osUuidCreateSequential(&id);
+ memcpy(zBuf, &id, sizeof(UUID));
+ n += sizeof(UUID);
+ }
#endif
return n;
}
/*
** Initialize and deinitialize the operating system interface.
*/
-SQLITE_API int sqlite3_os_init(void){
+SQLITE_API int SQLITE_STDCALL sqlite3_os_init(void){
static sqlite3_vfs winVfs = {
3, /* iVersion */
sizeof(winFile), /* szOsFile */
/* Double-check that the aSyscall[] array has been constructed
** correctly. See ticket [bb3a86e890c8e96ab] */
- assert( ArraySize(aSyscall)==77 );
+ assert( ArraySize(aSyscall)==80 );
/* get memory map allocation granularity */
memset(&winSysInfo, 0, sizeof(SYSTEM_INFO));
return SQLITE_OK;
}
-SQLITE_API int sqlite3_os_end(void){
+SQLITE_API int SQLITE_STDCALL sqlite3_os_end(void){
#if SQLITE_OS_WINRT
if( sleepObj!=NULL ){
osCloseHandle(sleepObj);
PgHdr *pPage1; /* Reference to page 1 */
};
-/*
-** Some of the assert() macros in this code are too expensive to run
-** even during normal debugging. Use them only rarely on long-running
-** tests. Enable the expensive asserts using the
-** -DSQLITE_ENABLE_EXPENSIVE_ASSERT=1 compile-time option.
-*/
-#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT
-# define expensive_assert(X) assert(X)
-#else
-# define expensive_assert(X)
-#endif
-
/********************************** Linked List Management ********************/
/* Allowed values for second argument to pcacheManageDirtyList() */
}
/*
-** Compute the number of pages of cache requested.
+** Compute the number of pages of cache requested. p->szCache is the
+** cache size requested by the "PRAGMA cache_size" statement.
+**
+**
*/
static int numberOfCachePages(PCache *p){
if( p->szCache>=0 ){
+ /* IMPLEMENTATION-OF: R-42059-47211 If the argument N is positive then the
+ ** suggested cache size is set to N. */
return p->szCache;
}else{
+ /* IMPLEMENTATION-OF: R-61436-13639 If the argument N is negative, then
+ ** the number of cache pages is adjusted to use approximately abs(N*1024)
+ ** bytes of memory. */
return (int)((-1024*(i64)p->szCache)/(p->szPage+p->szExtra));
}
}
if( pCache->szPage ){
sqlite3_pcache *pNew;
pNew = sqlite3GlobalConfig.pcache2.xCreate(
- szPage, pCache->szExtra + sizeof(PgHdr), pCache->bPurgeable
+ szPage, pCache->szExtra + ROUND8(sizeof(PgHdr)),
+ pCache->bPurgeable
);
if( pNew==0 ) return SQLITE_NOMEM;
sqlite3GlobalConfig.pcache2.xCachesize(pNew, numberOfCachePages(pCache));
sqlite3GlobalConfig.pcache2.xShrink(pCache->pCache);
}
+/*
+** Return the size of the header added by this middleware layer
+** in the page-cache hierarchy.
+*/
+SQLITE_PRIVATE int sqlite3HeaderSizePcache(void){ return ROUND8(sizeof(PgHdr)); }
+
+
#if defined(SQLITE_CHECK_PAGES) || defined(SQLITE_DEBUG)
/*
** For all dirty pages currently in the cache, invoke the specified
static void *pcache1Alloc(int nByte){
void *p = 0;
assert( sqlite3_mutex_notheld(pcache1.grp.mutex) );
- sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte);
if( nByte<=pcache1.szSlot ){
sqlite3_mutex_enter(pcache1.mutex);
p = (PgHdr1 *)pcache1.pFree;
pcache1.nFreeSlot--;
pcache1.bUnderPressure = pcache1.nFreeSlot<pcache1.nReserve;
assert( pcache1.nFreeSlot>=0 );
- sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1);
+ sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte);
+ sqlite3StatusUp(SQLITE_STATUS_PAGECACHE_USED, 1);
}
sqlite3_mutex_leave(pcache1.mutex);
}
if( p ){
int sz = sqlite3MallocSize(p);
sqlite3_mutex_enter(pcache1.mutex);
- sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, sz);
+ sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte);
+ sqlite3StatusUp(SQLITE_STATUS_PAGECACHE_OVERFLOW, sz);
sqlite3_mutex_leave(pcache1.mutex);
}
#endif
if( p>=pcache1.pStart && p<pcache1.pEnd ){
PgFreeslot *pSlot;
sqlite3_mutex_enter(pcache1.mutex);
- sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, -1);
+ sqlite3StatusDown(SQLITE_STATUS_PAGECACHE_USED, 1);
pSlot = (PgFreeslot*)p;
pSlot->pNext = pcache1.pFree;
pcache1.pFree = pSlot;
nFreed = sqlite3MallocSize(p);
#ifndef SQLITE_DISABLE_PAGECACHE_OVERFLOW_STATS
sqlite3_mutex_enter(pcache1.mutex);
- sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, -nFreed);
+ sqlite3StatusDown(SQLITE_STATUS_PAGECACHE_OVERFLOW, nFreed);
sqlite3_mutex_leave(pcache1.mutex);
#endif
sqlite3_free(p);
pPg = 0;
}
#else
- pPg = pcache1Alloc(sizeof(PgHdr1) + pCache->szPage + pCache->szExtra);
+ pPg = pcache1Alloc(ROUND8(sizeof(PgHdr1)) + pCache->szPage + pCache->szExtra);
p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage];
#endif
pcache1EnterMutex(pCache->pGroup);
sqlite3_config(SQLITE_CONFIG_PCACHE2, &defaultMethods);
}
+/*
+** Return the size of the header on each page of this PCACHE implementation.
+*/
+SQLITE_PRIVATE int sqlite3HeaderSizePcache1(void){ return ROUND8(sizeof(PgHdr1)); }
+
+/*
+** Return the global mutex used by this PCACHE implementation. The
+** sqlite3_status() routine needs access to this mutex.
+*/
+SQLITE_PRIVATE sqlite3_mutex *sqlite3Pcache1Mutex(void){
+ return pcache1.mutex;
+}
+
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
/*
** This function is called to free superfluous dynamically allocated memory
u8 setMaster; /* True if a m-j name has been written to jrnl */
u8 doNotSpill; /* Do not spill the cache when non-zero */
u8 subjInMemory; /* True to use in-memory sub-journals */
+ u8 bUseFetch; /* True to use xFetch() */
+ u8 hasBeenUsed; /* True if any content previously read from this pager*/
Pgno dbSize; /* Number of pages in the database */
Pgno dbOrigSize; /* dbSize before the current transaction */
Pgno dbFileSize; /* Number of pages in the database file */
sqlite3_backup *pBackup; /* Pointer to list of ongoing backup processes */
PagerSavepoint *aSavepoint; /* Array of active savepoints */
int nSavepoint; /* Number of elements in aSavepoint[] */
+ u32 iDataVersion; /* Changes whenever database content changes */
char dbFileVers[16]; /* Changes whenever database file changes */
- u8 bUseFetch; /* True to use xFetch() */
int nMmapOut; /* Number of mmap pages currently outstanding */
sqlite3_int64 szMmap; /* Desired maximum mmap size */
PgHdr *pMmapFreelist; /* List of free mmap page headers (pDirty) */
** Discard the entire contents of the in-memory page-cache.
*/
static void pager_reset(Pager *pPager){
+ pPager->iDataVersion++;
sqlite3BackupRestart(pPager->pBackup);
sqlite3PcacheClear(pPager->pPCache);
}
+/*
+** Return the pPager->iDataVersion value
+*/
+SQLITE_PRIVATE u32 sqlite3PagerDataVersion(Pager *pPager){
+ assert( pPager->eState>PAGER_OPEN );
+ return pPager->iDataVersion;
+}
+
/*
** Free all structures in the Pager.aSavepoint[] array and set both
** Pager.aSavepoint and Pager.nSavepoint to zero. Close the sub-journal
rc = SQLITE_OK;
}else{
rc = sqlite3OsTruncate(pPager->jfd, 0);
+ if( rc==SQLITE_OK && pPager->fullSync ){
+ /* Make sure the new file size is written into the inode right away.
+ ** Otherwise the journal might resurrect following a power loss and
+ ** cause the last transaction to roll back. See
+ ** https://bugzilla.mozilla.org/show_bug.cgi?id=1072773
+ */
+ rc = sqlite3OsSync(pPager->jfd, pPager->syncFlags);
+ }
}
pPager->journalOff = 0;
}else if( pPager->journalMode==PAGER_JOURNALMODE_PERSIST
**
** For an encrypted database, the situation is more complex: bytes
** 24..39 of the database are white noise. But the probability of
- ** white noising equaling 16 bytes of 0xff is vanishingly small so
+ ** white noise equaling 16 bytes of 0xff is vanishingly small so
** we should still be ok.
*/
memset(pPager->dbFileVers, 0xff, sizeof(pPager->dbFileVers));
PgHdr **ppPage /* OUT: Acquired page object */
){
PgHdr *p; /* Memory mapped page to return */
-
+
if( pPager->pMmapFreelist ){
*ppPage = p = pPager->pMmapFreelist;
pPager->pMmapFreelist = p->pDirty;
);
}
- if( !pPager->tempFile && (
- pPager->pBackup
- || sqlite3PcachePagecount(pPager->pPCache)>0
- || USEFETCH(pPager)
- )){
- /* The shared-lock has just been acquired on the database file
- ** and there are already pages in the cache (from a previous
- ** read or write transaction). Check to see if the database
- ** has been modified. If the database has changed, flush the
- ** cache.
+ if( !pPager->tempFile && pPager->hasBeenUsed ){
+ /* The shared-lock has just been acquired then check to
+ ** see if the database has been modified. If the database has changed,
+ ** flush the cache. The pPager->hasBeenUsed flag prevents this from
+ ** occurring on the very first access to a file, in order to save a
+ ** single unnecessary sqlite3OsRead() call at the start-up.
**
** Database changes is detected by looking at 15 bytes beginning
** at offset 24 into the file. The first 4 of these 16 bytes are
if( pgno==0 ){
return SQLITE_CORRUPT_BKPT;
}
+ pPager->hasBeenUsed = 1;
/* If the pager is in the error state, return an error immediately.
** Otherwise, request the page from the PCache layer. */
assert( pgno!=0 );
assert( pPager->pPCache!=0 );
pPage = sqlite3PcacheFetch(pPager->pPCache, pgno, 0);
+ assert( pPage==0 || pPager->hasBeenUsed );
return sqlite3PcacheFetchFinish(pPager->pPCache, pgno, pPage);
}
}
PAGERTRACE(("COMMIT %d\n", PAGERID(pPager)));
+ pPager->iDataVersion++;
rc = pager_end_transaction(pPager, pPager->setMaster, 1);
return pager_error(pPager, rc);
}
}
#endif
+/*
+** The page handle passed as the first argument refers to a dirty page
+** with a page number other than iNew. This function changes the page's
+** page number to iNew and sets the value of the PgHdr.flags field to
+** the value passed as the third parameter.
+*/
+SQLITE_PRIVATE void sqlite3PagerRekey(DbPage *pPg, Pgno iNew, u16 flags){
+ assert( pPg->pgno!=iNew );
+ pPg->flags = flags;
+ sqlite3PcacheMove(pPg, iNew);
+}
+
/*
** Return a pointer to the data for the specified page.
*/
int rc = SQLITE_OK;
if( pPager->pWal ){
rc = sqlite3WalCheckpoint(pPager->pWal, eMode,
- pPager->xBusyHandler, pPager->pBusyHandlerArg,
+ (eMode==SQLITE_CHECKPOINT_PASSIVE ? 0 : pPager->xBusyHandler),
+ pPager->pBusyHandlerArg,
pPager->ckptSyncFlags, pPager->pageSize, (u8 *)pPager->pTmpSpace,
pnLog, pnCkpt
);
}
#endif
+
#endif /* SQLITE_OMIT_DISKIO */
/************** End of pager.c ***********************************************/
SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED);
WALTRACE(("WAL%p: release SHARED-%s\n", pWal, walLockName(lockIdx)));
}
-static int walLockExclusive(Wal *pWal, int lockIdx, int n){
+static int walLockExclusive(Wal *pWal, int lockIdx, int n, int fBlock){
int rc;
if( pWal->exclusiveMode ) return SQLITE_OK;
+ if( fBlock ) sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_WAL_BLOCK, 0);
rc = sqlite3OsShmLock(pWal->pDbFd, lockIdx, n,
SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE);
WALTRACE(("WAL%p: acquire EXCLUSIVE-%s cnt=%d %s\n", pWal,
assert( pWal->writeLock );
iLock = WAL_ALL_BUT_WRITE + pWal->ckptLock;
nLock = SQLITE_SHM_NLOCK - iLock;
- rc = walLockExclusive(pWal, iLock, nLock);
+ rc = walLockExclusive(pWal, iLock, nLock, 0);
if( rc ){
return rc;
}
** Free an iterator allocated by walIteratorInit().
*/
static void walIteratorFree(WalIterator *p){
- sqlite3ScratchFree(p);
+ sqlite3_free(p);
}
/*
nByte = sizeof(WalIterator)
+ (nSegment-1)*sizeof(struct WalSegment)
+ iLast*sizeof(ht_slot);
- p = (WalIterator *)sqlite3ScratchMalloc(nByte);
+ p = (WalIterator *)sqlite3_malloc(nByte);
if( !p ){
return SQLITE_NOMEM;
}
/* Allocate temporary space used by the merge-sort routine. This block
** of memory will be freed before this function returns.
*/
- aTmp = (ht_slot *)sqlite3ScratchMalloc(
+ aTmp = (ht_slot *)sqlite3_malloc(
sizeof(ht_slot) * (iLast>HASHTABLE_NPAGE?HASHTABLE_NPAGE:iLast)
);
if( !aTmp ){
p->aSegment[i].aPgno = (u32 *)aPgno;
}
}
- sqlite3ScratchFree(aTmp);
+ sqlite3_free(aTmp);
if( rc!=SQLITE_OK ){
walIteratorFree(p);
){
int rc;
do {
- rc = walLockExclusive(pWal, lockIdx, n);
+ rc = walLockExclusive(pWal, lockIdx, n, 0);
}while( xBusy && rc==SQLITE_BUSY && xBusy(pBusyArg) );
return rc;
}
return (pWal->hdr.szPage&0xfe00) + ((pWal->hdr.szPage&0x0001)<<16);
}
+/*
+** The following is guaranteed when this function is called:
+**
+** a) the WRITER lock is held,
+** b) the entire log file has been checkpointed, and
+** c) any existing readers are reading exclusively from the database
+** file - there are no readers that may attempt to read a frame from
+** the log file.
+**
+** This function updates the shared-memory structures so that the next
+** client to write to the database (which may be this one) does so by
+** writing frames into the start of the log file.
+**
+** The value of parameter salt1 is used as the aSalt[1] value in the
+** new wal-index header. It should be passed a pseudo-random value (i.e.
+** one obtained from sqlite3_randomness()).
+*/
+static void walRestartHdr(Wal *pWal, u32 salt1){
+ volatile WalCkptInfo *pInfo = walCkptInfo(pWal);
+ int i; /* Loop counter */
+ u32 *aSalt = pWal->hdr.aSalt; /* Big-endian salt values */
+ pWal->nCkpt++;
+ pWal->hdr.mxFrame = 0;
+ sqlite3Put4byte((u8*)&aSalt[0], 1 + sqlite3Get4byte((u8*)&aSalt[0]));
+ memcpy(&pWal->hdr.aSalt[1], &salt1, 4);
+ walIndexWriteHdr(pWal);
+ pInfo->nBackfill = 0;
+ pInfo->aReadMark[1] = 0;
+ for(i=2; i<WAL_NREADER; i++) pInfo->aReadMark[i] = READMARK_NOT_USED;
+ assert( pInfo->aReadMark[0]==0 );
+}
+
/*
** Copy as much content as we can from the WAL back into the database file
** in response to an sqlite3_wal_checkpoint() request or the equivalent.
static int walCheckpoint(
Wal *pWal, /* Wal connection */
int eMode, /* One of PASSIVE, FULL or RESTART */
- int (*xBusyCall)(void*), /* Function to call when busy */
+ int (*xBusy)(void*), /* Function to call when busy */
void *pBusyArg, /* Context argument for xBusyHandler */
int sync_flags, /* Flags for OsSync() (or 0) */
u8 *zBuf /* Temporary buffer to use */
){
- int rc; /* Return code */
+ int rc = SQLITE_OK; /* Return code */
int szPage; /* Database page-size */
WalIterator *pIter = 0; /* Wal iterator context */
u32 iDbpage = 0; /* Next database page to write */
u32 mxPage; /* Max database page to write */
int i; /* Loop counter */
volatile WalCkptInfo *pInfo; /* The checkpoint status information */
- int (*xBusy)(void*) = 0; /* Function to call when waiting for locks */
szPage = walPagesize(pWal);
testcase( szPage<=32768 );
testcase( szPage>=65536 );
pInfo = walCkptInfo(pWal);
- if( pInfo->nBackfill>=pWal->hdr.mxFrame ) return SQLITE_OK;
+ if( pInfo->nBackfill<pWal->hdr.mxFrame ){
- /* Allocate the iterator */
- rc = walIteratorInit(pWal, &pIter);
- if( rc!=SQLITE_OK ){
- return rc;
- }
- assert( pIter );
+ /* Allocate the iterator */
+ rc = walIteratorInit(pWal, &pIter);
+ if( rc!=SQLITE_OK ){
+ return rc;
+ }
+ assert( pIter );
- if( eMode!=SQLITE_CHECKPOINT_PASSIVE ) xBusy = xBusyCall;
+ /* EVIDENCE-OF: R-62920-47450 The busy-handler callback is never invoked
+ ** in the SQLITE_CHECKPOINT_PASSIVE mode. */
+ assert( eMode!=SQLITE_CHECKPOINT_PASSIVE || xBusy==0 );
- /* Compute in mxSafeFrame the index of the last frame of the WAL that is
- ** safe to write into the database. Frames beyond mxSafeFrame might
- ** overwrite database pages that are in use by active readers and thus
- ** cannot be backfilled from the WAL.
- */
- mxSafeFrame = pWal->hdr.mxFrame;
- mxPage = pWal->hdr.nPage;
- for(i=1; i<WAL_NREADER; i++){
- u32 y = pInfo->aReadMark[i];
- if( mxSafeFrame>y ){
- assert( y<=pWal->hdr.mxFrame );
- rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(i), 1);
- if( rc==SQLITE_OK ){
- pInfo->aReadMark[i] = (i==1 ? mxSafeFrame : READMARK_NOT_USED);
- walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
- }else if( rc==SQLITE_BUSY ){
- mxSafeFrame = y;
- xBusy = 0;
- }else{
- goto walcheckpoint_out;
+ /* Compute in mxSafeFrame the index of the last frame of the WAL that is
+ ** safe to write into the database. Frames beyond mxSafeFrame might
+ ** overwrite database pages that are in use by active readers and thus
+ ** cannot be backfilled from the WAL.
+ */
+ mxSafeFrame = pWal->hdr.mxFrame;
+ mxPage = pWal->hdr.nPage;
+ for(i=1; i<WAL_NREADER; i++){
+ u32 y = pInfo->aReadMark[i];
+ if( mxSafeFrame>y ){
+ assert( y<=pWal->hdr.mxFrame );
+ rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(i), 1);
+ if( rc==SQLITE_OK ){
+ pInfo->aReadMark[i] = (i==1 ? mxSafeFrame : READMARK_NOT_USED);
+ walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
+ }else if( rc==SQLITE_BUSY ){
+ mxSafeFrame = y;
+ xBusy = 0;
+ }else{
+ goto walcheckpoint_out;
+ }
}
}
- }
- if( pInfo->nBackfill<mxSafeFrame
- && (rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(0), 1))==SQLITE_OK
- ){
- i64 nSize; /* Current size of database file */
- u32 nBackfill = pInfo->nBackfill;
-
- /* Sync the WAL to disk */
- if( sync_flags ){
- rc = sqlite3OsSync(pWal->pWalFd, sync_flags);
- }
+ if( pInfo->nBackfill<mxSafeFrame
+ && (rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(0),1))==SQLITE_OK
+ ){
+ i64 nSize; /* Current size of database file */
+ u32 nBackfill = pInfo->nBackfill;
- /* If the database may grow as a result of this checkpoint, hint
- ** about the eventual size of the db file to the VFS layer.
- */
- if( rc==SQLITE_OK ){
- i64 nReq = ((i64)mxPage * szPage);
- rc = sqlite3OsFileSize(pWal->pDbFd, &nSize);
- if( rc==SQLITE_OK && nSize<nReq ){
- sqlite3OsFileControlHint(pWal->pDbFd, SQLITE_FCNTL_SIZE_HINT, &nReq);
+ /* Sync the WAL to disk */
+ if( sync_flags ){
+ rc = sqlite3OsSync(pWal->pWalFd, sync_flags);
}
- }
+ /* If the database may grow as a result of this checkpoint, hint
+ ** about the eventual size of the db file to the VFS layer.
+ */
+ if( rc==SQLITE_OK ){
+ i64 nReq = ((i64)mxPage * szPage);
+ rc = sqlite3OsFileSize(pWal->pDbFd, &nSize);
+ if( rc==SQLITE_OK && nSize<nReq ){
+ sqlite3OsFileControlHint(pWal->pDbFd, SQLITE_FCNTL_SIZE_HINT, &nReq);
+ }
+ }
- /* Iterate through the contents of the WAL, copying data to the db file. */
- while( rc==SQLITE_OK && 0==walIteratorNext(pIter, &iDbpage, &iFrame) ){
- i64 iOffset;
- assert( walFramePgno(pWal, iFrame)==iDbpage );
- if( iFrame<=nBackfill || iFrame>mxSafeFrame || iDbpage>mxPage ) continue;
- iOffset = walFrameOffset(iFrame, szPage) + WAL_FRAME_HDRSIZE;
- /* testcase( IS_BIG_INT(iOffset) ); // requires a 4GiB WAL file */
- rc = sqlite3OsRead(pWal->pWalFd, zBuf, szPage, iOffset);
- if( rc!=SQLITE_OK ) break;
- iOffset = (iDbpage-1)*(i64)szPage;
- testcase( IS_BIG_INT(iOffset) );
- rc = sqlite3OsWrite(pWal->pDbFd, zBuf, szPage, iOffset);
- if( rc!=SQLITE_OK ) break;
- }
- /* If work was actually accomplished... */
- if( rc==SQLITE_OK ){
- if( mxSafeFrame==walIndexHdr(pWal)->mxFrame ){
- i64 szDb = pWal->hdr.nPage*(i64)szPage;
- testcase( IS_BIG_INT(szDb) );
- rc = sqlite3OsTruncate(pWal->pDbFd, szDb);
- if( rc==SQLITE_OK && sync_flags ){
- rc = sqlite3OsSync(pWal->pDbFd, sync_flags);
+ /* Iterate through the contents of the WAL, copying data to the db file */
+ while( rc==SQLITE_OK && 0==walIteratorNext(pIter, &iDbpage, &iFrame) ){
+ i64 iOffset;
+ assert( walFramePgno(pWal, iFrame)==iDbpage );
+ if( iFrame<=nBackfill || iFrame>mxSafeFrame || iDbpage>mxPage ){
+ continue;
}
+ iOffset = walFrameOffset(iFrame, szPage) + WAL_FRAME_HDRSIZE;
+ /* testcase( IS_BIG_INT(iOffset) ); // requires a 4GiB WAL file */
+ rc = sqlite3OsRead(pWal->pWalFd, zBuf, szPage, iOffset);
+ if( rc!=SQLITE_OK ) break;
+ iOffset = (iDbpage-1)*(i64)szPage;
+ testcase( IS_BIG_INT(iOffset) );
+ rc = sqlite3OsWrite(pWal->pDbFd, zBuf, szPage, iOffset);
+ if( rc!=SQLITE_OK ) break;
}
+
+ /* If work was actually accomplished... */
if( rc==SQLITE_OK ){
- pInfo->nBackfill = mxSafeFrame;
+ if( mxSafeFrame==walIndexHdr(pWal)->mxFrame ){
+ i64 szDb = pWal->hdr.nPage*(i64)szPage;
+ testcase( IS_BIG_INT(szDb) );
+ rc = sqlite3OsTruncate(pWal->pDbFd, szDb);
+ if( rc==SQLITE_OK && sync_flags ){
+ rc = sqlite3OsSync(pWal->pDbFd, sync_flags);
+ }
+ }
+ if( rc==SQLITE_OK ){
+ pInfo->nBackfill = mxSafeFrame;
+ }
}
- }
- /* Release the reader lock held while backfilling */
- walUnlockExclusive(pWal, WAL_READ_LOCK(0), 1);
- }
+ /* Release the reader lock held while backfilling */
+ walUnlockExclusive(pWal, WAL_READ_LOCK(0), 1);
+ }
- if( rc==SQLITE_BUSY ){
- /* Reset the return code so as not to report a checkpoint failure
- ** just because there are active readers. */
- rc = SQLITE_OK;
+ if( rc==SQLITE_BUSY ){
+ /* Reset the return code so as not to report a checkpoint failure
+ ** just because there are active readers. */
+ rc = SQLITE_OK;
+ }
}
- /* If this is an SQLITE_CHECKPOINT_RESTART operation, and the entire wal
- ** file has been copied into the database file, then block until all
- ** readers have finished using the wal file. This ensures that the next
- ** process to write to the database restarts the wal file.
+ /* If this is an SQLITE_CHECKPOINT_RESTART or TRUNCATE operation, and the
+ ** entire wal file has been copied into the database file, then block
+ ** until all readers have finished using the wal file. This ensures that
+ ** the next process to write to the database restarts the wal file.
*/
if( rc==SQLITE_OK && eMode!=SQLITE_CHECKPOINT_PASSIVE ){
assert( pWal->writeLock );
if( pInfo->nBackfill<pWal->hdr.mxFrame ){
rc = SQLITE_BUSY;
- }else if( eMode==SQLITE_CHECKPOINT_RESTART ){
- assert( mxSafeFrame==pWal->hdr.mxFrame );
+ }else if( eMode>=SQLITE_CHECKPOINT_RESTART ){
+ u32 salt1;
+ sqlite3_randomness(4, &salt1);
+ assert( pInfo->nBackfill==pWal->hdr.mxFrame );
rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(1), WAL_NREADER-1);
if( rc==SQLITE_OK ){
+ if( eMode==SQLITE_CHECKPOINT_TRUNCATE ){
+ /* IMPLEMENTATION-OF: R-44699-57140 This mode works the same way as
+ ** SQLITE_CHECKPOINT_RESTART with the addition that it also
+ ** truncates the log file to zero bytes just prior to a
+ ** successful return.
+ **
+ ** In theory, it might be safe to do this without updating the
+ ** wal-index header in shared memory, as all subsequent reader or
+ ** writer clients should see that the entire log file has been
+ ** checkpointed and behave accordingly. This seems unsafe though,
+ ** as it would leave the system in a state where the contents of
+ ** the wal-index header do not match the contents of the
+ ** file-system. To avoid this, update the wal-index header to
+ ** indicate that the log file contains zero valid frames. */
+ walRestartHdr(pWal, salt1);
+ rc = sqlite3OsTruncate(pWal->pWalFd, 0);
+ }
walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
}
}
walUnlockShared(pWal, WAL_WRITE_LOCK);
rc = SQLITE_READONLY_RECOVERY;
}
- }else if( SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1)) ){
+ }else if( SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1, 1)) ){
pWal->writeLock = 1;
if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
badHdr = walIndexTryHdr(pWal, pChanged);
&& (mxReadMark<pWal->hdr.mxFrame || mxI==0)
){
for(i=1; i<WAL_NREADER; i++){
- rc = walLockExclusive(pWal, WAL_READ_LOCK(i), 1);
+ rc = walLockExclusive(pWal, WAL_READ_LOCK(i), 1, 0);
if( rc==SQLITE_OK ){
mxReadMark = pInfo->aReadMark[i] = pWal->hdr.mxFrame;
mxI = i;
for(iKey=walHash(pgno); aHash[iKey]; iKey=walNextHash(iKey)){
u32 iFrame = aHash[iKey] + iZero;
if( iFrame<=iLast && aPgno[aHash[iKey]]==pgno ){
- /* assert( iFrame>iRead ); -- not true if there is corruption */
+ assert( iFrame>iRead || CORRUPT_DB );
iRead = iFrame;
}
if( (nCollide--)==0 ){
/* Only one writer allowed at a time. Get the write lock. Return
** SQLITE_BUSY if unable.
*/
- rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1);
+ rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1, 0);
if( rc ){
return rc;
}
}
if( iMax!=pWal->hdr.mxFrame ) walCleanupHash(pWal);
}
- assert( rc==SQLITE_OK );
return rc;
}
return rc;
}
-
/*
** This function is called just before writing a set of frames to the log
** file (see sqlite3WalFrames()). It checks to see if, instead of appending
if( pInfo->nBackfill>0 ){
u32 salt1;
sqlite3_randomness(4, &salt1);
- rc = walLockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
+ rc = walLockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1, 0);
if( rc==SQLITE_OK ){
/* If all readers are using WAL_READ_LOCK(0) (in other words if no
** readers are currently using the WAL), then the transactions
** In theory it would be Ok to update the cache of the header only
** at this point. But updating the actual wal-index header is also
** safe and means there is no special case for sqlite3WalUndo()
- ** to handle if this transaction is rolled back.
- */
- int i; /* Loop counter */
- u32 *aSalt = pWal->hdr.aSalt; /* Big-endian salt values */
-
- pWal->nCkpt++;
- pWal->hdr.mxFrame = 0;
- sqlite3Put4byte((u8*)&aSalt[0], 1 + sqlite3Get4byte((u8*)&aSalt[0]));
- aSalt[1] = salt1;
- walIndexWriteHdr(pWal);
- pInfo->nBackfill = 0;
- pInfo->aReadMark[1] = 0;
- for(i=2; i<WAL_NREADER; i++) pInfo->aReadMark[i] = READMARK_NOT_USED;
- assert( pInfo->aReadMark[0]==0 );
+ ** to handle if this transaction is rolled back. */
+ walRestartHdr(pWal, salt1);
walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
}else if( rc!=SQLITE_BUSY ){
return rc;
*/
SQLITE_PRIVATE int sqlite3WalCheckpoint(
Wal *pWal, /* Wal connection */
- int eMode, /* PASSIVE, FULL or RESTART */
+ int eMode, /* PASSIVE, FULL, RESTART, or TRUNCATE */
int (*xBusy)(void*), /* Function to call when busy */
void *pBusyArg, /* Context argument for xBusyHandler */
int sync_flags, /* Flags to sync db file with (or 0) */
int rc; /* Return code */
int isChanged = 0; /* True if a new wal-index header is loaded */
int eMode2 = eMode; /* Mode to pass to walCheckpoint() */
+ int (*xBusy2)(void*) = xBusy; /* Busy handler for eMode2 */
assert( pWal->ckptLock==0 );
assert( pWal->writeLock==0 );
+ /* EVIDENCE-OF: R-62920-47450 The busy-handler callback is never invoked
+ ** in the SQLITE_CHECKPOINT_PASSIVE mode. */
+ assert( eMode!=SQLITE_CHECKPOINT_PASSIVE || xBusy==0 );
+
if( pWal->readOnly ) return SQLITE_READONLY;
WALTRACE(("WAL%p: checkpoint begins\n", pWal));
- rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1);
+
+ /* IMPLEMENTATION-OF: R-62028-47212 All calls obtain an exclusive
+ ** "checkpoint" lock on the database file. */
+ rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1, 0);
if( rc ){
- /* Usually this is SQLITE_BUSY meaning that another thread or process
- ** is already running a checkpoint, or maybe a recovery. But it might
- ** also be SQLITE_IOERR. */
+ /* EVIDENCE-OF: R-10421-19736 If any other process is running a
+ ** checkpoint operation at the same time, the lock cannot be obtained and
+ ** SQLITE_BUSY is returned.
+ ** EVIDENCE-OF: R-53820-33897 Even if there is a busy-handler configured,
+ ** it will not be invoked in this case.
+ */
+ testcase( rc==SQLITE_BUSY );
+ testcase( xBusy!=0 );
return rc;
}
pWal->ckptLock = 1;
- /* If this is a blocking-checkpoint, then obtain the write-lock as well
- ** to prevent any writers from running while the checkpoint is underway.
- ** This has to be done before the call to walIndexReadHdr() below.
+ /* IMPLEMENTATION-OF: R-59782-36818 The SQLITE_CHECKPOINT_FULL, RESTART and
+ ** TRUNCATE modes also obtain the exclusive "writer" lock on the database
+ ** file.
**
- ** If the writer lock cannot be obtained, then a passive checkpoint is
- ** run instead. Since the checkpointer is not holding the writer lock,
- ** there is no point in blocking waiting for any readers. Assuming no
- ** other error occurs, this function will return SQLITE_BUSY to the caller.
+ ** EVIDENCE-OF: R-60642-04082 If the writer lock cannot be obtained
+ ** immediately, and a busy-handler is configured, it is invoked and the
+ ** writer lock retried until either the busy-handler returns 0 or the
+ ** lock is successfully obtained.
*/
if( eMode!=SQLITE_CHECKPOINT_PASSIVE ){
rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_WRITE_LOCK, 1);
pWal->writeLock = 1;
}else if( rc==SQLITE_BUSY ){
eMode2 = SQLITE_CHECKPOINT_PASSIVE;
+ xBusy2 = 0;
rc = SQLITE_OK;
}
}
if( pWal->hdr.mxFrame && walPagesize(pWal)!=nBuf ){
rc = SQLITE_CORRUPT_BKPT;
}else{
- rc = walCheckpoint(pWal, eMode2, xBusy, pBusyArg, sync_flags, zBuf);
+ rc = walCheckpoint(pWal, eMode2, xBusy2, pBusyArg, sync_flags, zBuf);
}
/* If no error occurred, set the output variables. */
u8 hdrOffset; /* 100 for page 1. 0 otherwise */
u8 childPtrSize; /* 0 if leaf==1. 4 if leaf==0 */
u8 max1bytePayload; /* min(maxLocal,127) */
+ u8 bBusy; /* Prevent endless loops on corrupt database files */
u16 maxLocal; /* Copy of BtShared.maxLocal or BtShared.maxLeaf */
u16 minLocal; /* Copy of BtShared.minLocal or BtShared.minLeaf */
u16 cellOffset; /* Index in aData of first cell pointer */
u8 locked; /* True if db currently has pBt locked */
int wantToLock; /* Number of nested calls to sqlite3BtreeEnter() */
int nBackup; /* Number of backup operations reading this btree */
+ u32 iDataVersion; /* Combines with pBt->pPager->iDataVersion */
Btree *pNext; /* List of other sharable Btrees from the same db */
Btree *pPrev; /* Back pointer of the same list */
#ifndef SQLITE_OMIT_SHARED_CACHE
#endif
u8 inTransaction; /* Transaction state */
u8 max1bytePayload; /* Maximum first byte of cell for a 1-byte payload */
+#ifdef SQLITE_HAS_CODEC
+ u8 optimalReserve; /* Desired amount of reserved space per page */
+#endif
u16 btsFlags; /* Boolean parameters. See BTS_* macros below */
u16 maxLocal; /* Maximum local payload in non-LEAFDATA tables */
u16 minLocal; /* Minimum local payload in non-LEAFDATA tables */
**
** Fields in this structure are accessed under the BtShared.mutex
** found at self->pBt->mutex.
+**
+** skipNext meaning:
+** eState==SKIPNEXT && skipNext>0: Next sqlite3BtreeNext() is no-op.
+** eState==SKIPNEXT && skipNext<0: Next sqlite3BtreePrevious() is no-op.
+** eState==FAULT: Cursor fault with skipNext as error code.
*/
struct BtCursor {
Btree *pBtree; /* The Btree to which this cursor belongs */
void *pKey; /* Saved key that was cursor last known position */
Pgno pgnoRoot; /* The root page of this tree */
int nOvflAlloc; /* Allocated size of aOverflow[] array */
- int skipNext; /* Prev() is noop if negative. Next() is noop if positive */
+ int skipNext; /* Prev() is noop if negative. Next() is noop if positive.
+ ** Error code if eState==CURSOR_FAULT */
u8 curFlags; /* zero or more BTCF_* flags defined below */
u8 eState; /* One of the CURSOR_XXX constants (see below) */
u8 hints; /* As configured by CursorSetHints() */
** on a different connection that shares the BtShared cache with this
** cursor. The error has left the cache in an inconsistent state.
** Do nothing else with this cursor. Any attempt to use the cursor
-** should return the error code stored in BtCursor.skip
+** should return the error code stored in BtCursor.skipNext
*/
#define CURSOR_INVALID 0
#define CURSOR_VALID 1
** Exit the recursive mutex on a Btree.
*/
SQLITE_PRIVATE void sqlite3BtreeLeave(Btree *p){
+ assert( sqlite3_mutex_held(p->db->mutex) );
if( p->sharable ){
assert( p->wantToLock>0 );
p->wantToLock--;
** The shared cache setting effects only future calls to
** sqlite3_open(), sqlite3_open16(), or sqlite3_open_v2().
*/
-SQLITE_API int sqlite3_enable_shared_cache(int enable){
+SQLITE_API int SQLITE_STDCALL sqlite3_enable_shared_cache(int enable){
sqlite3GlobalConfig.sharedCacheEnabled = enable;
return SQLITE_OK;
}
for(p=sqliteHashFirst(&pSchema->idxHash); p; p=sqliteHashNext(p)){
Index *pIdx = (Index *)sqliteHashData(p);
if( pIdx->tnum==(int)iRoot ){
+ if( iTab ){
+ /* Two or more indexes share the same root page. There must
+ ** be imposter tables. So just return true. The assert is not
+ ** useful in that case. */
+ return 1;
+ }
iTab = pIdx->pTable->tnum;
}
}
static int saveCursorPosition(BtCursor *pCur){
int rc;
- assert( CURSOR_VALID==pCur->eState );
+ assert( CURSOR_VALID==pCur->eState || CURSOR_SKIPNEXT==pCur->eState );
assert( 0==pCur->pKey );
assert( cursorHoldsMutex(pCur) );
+ if( pCur->eState==CURSOR_SKIPNEXT ){
+ pCur->eState = CURSOR_VALID;
+ }else{
+ pCur->skipNext = 0;
+ }
rc = sqlite3BtreeKeySize(pCur, &pCur->nKey);
assert( rc==SQLITE_OK ); /* KeySize() cannot fail */
){
do{
if( p!=pExcept && (0==iRoot || p->pgnoRoot==iRoot) ){
- if( p->eState==CURSOR_VALID ){
+ if( p->eState==CURSOR_VALID || p->eState==CURSOR_SKIPNEXT ){
int rc = saveCursorPosition(p);
if( SQLITE_OK!=rc ){
return rc;
*/
static int btreeRestoreCursorPosition(BtCursor *pCur){
int rc;
+ int skipNext;
assert( cursorHoldsMutex(pCur) );
assert( pCur->eState>=CURSOR_REQUIRESEEK );
if( pCur->eState==CURSOR_FAULT ){
return pCur->skipNext;
}
pCur->eState = CURSOR_INVALID;
- rc = btreeMoveto(pCur, pCur->pKey, pCur->nKey, 0, &pCur->skipNext);
+ rc = btreeMoveto(pCur, pCur->pKey, pCur->nKey, 0, &skipNext);
if( rc==SQLITE_OK ){
sqlite3_free(pCur->pKey);
pCur->pKey = 0;
assert( pCur->eState==CURSOR_VALID || pCur->eState==CURSOR_INVALID );
+ pCur->skipNext |= skipNext;
if( pCur->skipNext && pCur->eState==CURSOR_VALID ){
pCur->eState = CURSOR_SKIPNEXT;
}
*pDifferentRow = 1;
return rc;
}
- if( pCur->eState!=CURSOR_VALID || NEVER(pCur->skipNext!=0) ){
+ if( pCur->eState!=CURSOR_VALID ){
*pDifferentRow = 1;
}else{
+ assert( pCur->skipNext==0 );
*pDifferentRow = 0;
}
return SQLITE_OK;
** end of the page and all free space is collected into one
** big FreeBlk that occurs in between the header and cell
** pointer array and the cell content area.
+**
+** EVIDENCE-OF: R-44582-60138 SQLite may from time to time reorganize a
+** b-tree page so that there are no freeblocks or fragment bytes, all
+** unused bytes are contained in the unallocated space region, and all
+** cells are packed tightly at the end of the page.
*/
static int defragmentPage(MemPage *pPage){
int i; /* Loop counter */
int nCell; /* Number of cells on the page */
unsigned char *data; /* The page data */
unsigned char *temp; /* Temp area for cell content */
+ unsigned char *src; /* Source of content */
int iCellFirst; /* First allowable cell index */
int iCellLast; /* Last possible cell index */
assert( pPage->pBt->usableSize <= SQLITE_MAX_PAGE_SIZE );
assert( pPage->nOverflow==0 );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
- temp = sqlite3PagerTempSpace(pPage->pBt->pPager);
- data = pPage->aData;
+ temp = 0;
+ src = data = pPage->aData;
hdr = pPage->hdrOffset;
cellOffset = pPage->cellOffset;
nCell = pPage->nCell;
assert( nCell==get2byte(&data[hdr+3]) );
usableSize = pPage->pBt->usableSize;
- cbrk = get2byte(&data[hdr+5]);
- memcpy(&temp[cbrk], &data[cbrk], usableSize - cbrk);
cbrk = usableSize;
iCellFirst = cellOffset + 2*nCell;
iCellLast = usableSize - 4;
}
#endif
assert( pc>=iCellFirst && pc<=iCellLast );
- size = cellSizePtr(pPage, &temp[pc]);
+ size = cellSizePtr(pPage, &src[pc]);
cbrk -= size;
#if defined(SQLITE_ENABLE_OVERSIZE_CELL_CHECK)
if( cbrk<iCellFirst ){
assert( cbrk+size<=usableSize && cbrk>=iCellFirst );
testcase( cbrk+size==usableSize );
testcase( pc+size==usableSize );
- memcpy(&data[cbrk], &temp[pc], size);
put2byte(pAddr, cbrk);
+ if( temp==0 ){
+ int x;
+ if( cbrk==pc ) continue;
+ temp = sqlite3PagerTempSpace(pPage->pBt->pPager);
+ x = get2byte(&data[hdr+5]);
+ memcpy(&temp[x], &data[x], (cbrk+size) - x);
+ src = temp;
+ }
+ memcpy(&data[cbrk], &src[pc], size);
}
assert( cbrk>=iCellFirst );
put2byte(&data[hdr+5], cbrk);
return SQLITE_OK;
}
+/*
+** Search the free-list on page pPg for space to store a cell nByte bytes in
+** size. If one can be found, return a pointer to the space and remove it
+** from the free-list.
+**
+** If no suitable space can be found on the free-list, return NULL.
+**
+** This function may detect corruption within pPg. If corruption is
+** detected then *pRc is set to SQLITE_CORRUPT and NULL is returned.
+**
+** If a slot of at least nByte bytes is found but cannot be used because
+** there are already at least 60 fragmented bytes on the page, return NULL.
+** In this case, if pbDefrag parameter is not NULL, set *pbDefrag to true.
+*/
+static u8 *pageFindSlot(MemPage *pPg, int nByte, int *pRc, int *pbDefrag){
+ const int hdr = pPg->hdrOffset;
+ u8 * const aData = pPg->aData;
+ int iAddr;
+ int pc;
+ int usableSize = pPg->pBt->usableSize;
+
+ for(iAddr=hdr+1; (pc = get2byte(&aData[iAddr]))>0; iAddr=pc){
+ int size; /* Size of the free slot */
+ /* EVIDENCE-OF: R-06866-39125 Freeblocks are always connected in order of
+ ** increasing offset. */
+ if( pc>usableSize-4 || pc<iAddr+4 ){
+ *pRc = SQLITE_CORRUPT_BKPT;
+ return 0;
+ }
+ /* EVIDENCE-OF: R-22710-53328 The third and fourth bytes of each
+ ** freeblock form a big-endian integer which is the size of the freeblock
+ ** in bytes, including the 4-byte header. */
+ size = get2byte(&aData[pc+2]);
+ if( size>=nByte ){
+ int x = size - nByte;
+ testcase( x==4 );
+ testcase( x==3 );
+ if( x<4 ){
+ /* EVIDENCE-OF: R-11498-58022 In a well-formed b-tree page, the total
+ ** number of bytes in fragments may not exceed 60. */
+ if( aData[hdr+7]>=60 ){
+ if( pbDefrag ) *pbDefrag = 1;
+ return 0;
+ }
+ /* Remove the slot from the free-list. Update the number of
+ ** fragmented bytes within the page. */
+ memcpy(&aData[iAddr], &aData[pc], 2);
+ aData[hdr+7] += (u8)x;
+ }else if( size+pc > usableSize ){
+ *pRc = SQLITE_CORRUPT_BKPT;
+ return 0;
+ }else{
+ /* The slot remains on the free-list. Reduce its size to account
+ ** for the portion used by the new allocation. */
+ put2byte(&aData[pc+2], x);
+ }
+ return &aData[pc + x];
+ }
+ }
+
+ return 0;
+}
+
/*
** Allocate nByte bytes of space from within the B-Tree page passed
** as the first argument. Write into *pIdx the index into pPage->aData[]
const int hdr = pPage->hdrOffset; /* Local cache of pPage->hdrOffset */
u8 * const data = pPage->aData; /* Local cache of pPage->aData */
int top; /* First byte of cell content area */
+ int rc = SQLITE_OK; /* Integer return code */
int gap; /* First byte of gap between cell pointers and cell content */
- int rc; /* Integer return code */
- int usableSize; /* Usable size of the page */
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( pPage->pBt );
assert( nByte>=0 ); /* Minimum cell size is 4 */
assert( pPage->nFree>=nByte );
assert( pPage->nOverflow==0 );
- usableSize = pPage->pBt->usableSize;
- assert( nByte < usableSize-8 );
+ assert( nByte < (int)(pPage->pBt->usableSize-8) );
assert( pPage->cellOffset == hdr + 12 - 4*pPage->leaf );
gap = pPage->cellOffset + 2*pPage->nCell;
assert( gap<=65536 );
- top = get2byte(&data[hdr+5]);
- if( gap>top ){
- if( top==0 ){
- top = 65536;
- }else{
- return SQLITE_CORRUPT_BKPT;
- }
- }
+ /* EVIDENCE-OF: R-29356-02391 If the database uses a 65536-byte page size
+ ** and the reserved space is zero (the usual value for reserved space)
+ ** then the cell content offset of an empty page wants to be 65536.
+ ** However, that integer is too large to be stored in a 2-byte unsigned
+ ** integer, so a value of 0 is used in its place. */
+ top = get2byteNotZero(&data[hdr+5]);
+ if( gap>top ) return SQLITE_CORRUPT_BKPT;
/* If there is enough space between gap and top for one more cell pointer
** array entry offset, and if the freelist is not empty, then search the
testcase( gap+1==top );
testcase( gap==top );
if( gap+2<=top && (data[hdr+1] || data[hdr+2]) ){
- int pc, addr;
- for(addr=hdr+1; (pc = get2byte(&data[addr]))>0; addr=pc){
- int size; /* Size of the free slot */
- if( pc>usableSize-4 || pc<addr+4 ){
- return SQLITE_CORRUPT_BKPT;
- }
- size = get2byte(&data[pc+2]);
- if( size>=nByte ){
- int x = size - nByte;
- testcase( x==4 );
- testcase( x==3 );
- if( x<4 ){
- if( data[hdr+7]>=60 ) goto defragment_page;
- /* Remove the slot from the free-list. Update the number of
- ** fragmented bytes within the page. */
- memcpy(&data[addr], &data[pc], 2);
- data[hdr+7] += (u8)x;
- }else if( size+pc > usableSize ){
- return SQLITE_CORRUPT_BKPT;
- }else{
- /* The slot remains on the free-list. Reduce its size to account
- ** for the portion used by the new allocation. */
- put2byte(&data[pc+2], x);
- }
- *pIdx = pc + x;
- return SQLITE_OK;
- }
+ int bDefrag = 0;
+ u8 *pSpace = pageFindSlot(pPage, nByte, &rc, &bDefrag);
+ if( rc ) return rc;
+ if( bDefrag ) goto defragment_page;
+ if( pSpace ){
+ assert( pSpace>=data && (pSpace - data)<65536 );
+ *pIdx = (int)(pSpace - data);
+ return SQLITE_OK;
}
}
*/
testcase( gap+2+nByte==top );
if( gap+2+nByte>top ){
-defragment_page:
- testcase( pPage->nCell==0 );
+ defragment_page:
+ assert( pPage->nCell>0 || CORRUPT_DB );
rc = defragmentPage(pPage);
if( rc ) return rc;
top = get2byteNotZero(&data[hdr+5]);
assert( pPage->pBt!=0 );
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( iStart>=pPage->hdrOffset+6+pPage->childPtrSize );
- assert( iEnd <= pPage->pBt->usableSize );
+ assert( CORRUPT_DB || iEnd <= pPage->pBt->usableSize );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
assert( iSize>=4 ); /* Minimum cell size is 4 */
assert( iStart<=iLast );
pPage->childPtrSize = 4-4*pPage->leaf;
pBt = pPage->pBt;
if( flagByte==(PTF_LEAFDATA | PTF_INTKEY) ){
+ /* EVIDENCE-OF: R-03640-13415 A value of 5 means the page is an interior
+ ** table b-tree page. */
+ assert( (PTF_LEAFDATA|PTF_INTKEY)==5 );
+ /* EVIDENCE-OF: R-20501-61796 A value of 13 means the page is a leaf
+ ** table b-tree page. */
+ assert( (PTF_LEAFDATA|PTF_INTKEY|PTF_LEAF)==13 );
pPage->intKey = 1;
pPage->intKeyLeaf = pPage->leaf;
pPage->noPayload = !pPage->leaf;
pPage->maxLocal = pBt->maxLeaf;
pPage->minLocal = pBt->minLeaf;
}else if( flagByte==PTF_ZERODATA ){
+ /* EVIDENCE-OF: R-27225-53936 A value of 2 means the page is an interior
+ ** index b-tree page. */
+ assert( (PTF_ZERODATA)==2 );
+ /* EVIDENCE-OF: R-16571-11615 A value of 10 means the page is a leaf
+ ** index b-tree page. */
+ assert( (PTF_ZERODATA|PTF_LEAF)==10 );
pPage->intKey = 0;
pPage->intKeyLeaf = 0;
pPage->noPayload = 0;
pPage->maxLocal = pBt->maxLocal;
pPage->minLocal = pBt->minLocal;
}else{
+ /* EVIDENCE-OF: R-47608-56469 Any other value for the b-tree page type is
+ ** an error. */
return SQLITE_CORRUPT_BKPT;
}
pPage->max1bytePayload = pBt->max1bytePayload;
hdr = pPage->hdrOffset;
data = pPage->aData;
+ /* EVIDENCE-OF: R-28594-02890 The one-byte flag at offset 0 indicating
+ ** the b-tree page type. */
if( decodeFlags(pPage, data[hdr]) ) return SQLITE_CORRUPT_BKPT;
assert( pBt->pageSize>=512 && pBt->pageSize<=65536 );
pPage->maskPage = (u16)(pBt->pageSize - 1);
pPage->nOverflow = 0;
usableSize = pBt->usableSize;
- pPage->cellOffset = cellOffset = hdr + 12 - 4*pPage->leaf;
+ pPage->cellOffset = cellOffset = hdr + 8 + pPage->childPtrSize;
pPage->aDataEnd = &data[usableSize];
pPage->aCellIdx = &data[cellOffset];
+ /* EVIDENCE-OF: R-58015-48175 The two-byte integer at offset 5 designates
+ ** the start of the cell content area. A zero value for this integer is
+ ** interpreted as 65536. */
top = get2byteNotZero(&data[hdr+5]);
+ /* EVIDENCE-OF: R-37002-32774 The two-byte integer at offset 3 gives the
+ ** number of cells on the page. */
pPage->nCell = get2byte(&data[hdr+3]);
if( pPage->nCell>MX_CELL(pBt) ){
/* To many cells for a single page. The page must be corrupt */
return SQLITE_CORRUPT_BKPT;
}
testcase( pPage->nCell==MX_CELL(pBt) );
+ /* EVIDENCE-OF: R-24089-57979 If a page contains no cells (which is only
+ ** possible for a root page of a table that contains no rows) then the
+ ** offset to the cell content area will equal the page size minus the
+ ** bytes of reserved space. */
+ assert( pPage->nCell>0 || top==usableSize || CORRUPT_DB );
/* A malformed database page might cause us to read past the end
** of page when parsing a cell.
}
#endif
- /* Compute the total free space on the page */
+ /* Compute the total free space on the page
+ ** EVIDENCE-OF: R-23588-34450 The two-byte integer at offset 1 gives the
+ ** start of the first freeblock on the page, or is zero if there are no
+ ** freeblocks. */
pc = get2byte(&data[hdr+1]);
- nFree = data[hdr+7] + top;
+ nFree = data[hdr+7] + top; /* Init nFree to non-freeblock free space */
while( pc>0 ){
u16 next, size;
if( pc<iCellFirst || pc>iCellLast ){
- /* Start of free block is off the page */
+ /* EVIDENCE-OF: R-55530-52930 In a well-formed b-tree page, there will
+ ** always be at least one cell before the first freeblock.
+ **
+ ** Or, the freeblock is off the end of the page
+ */
return SQLITE_CORRUPT_BKPT;
}
next = get2byte(&data[pc]);
*/
if( isTempDb==0 && (isMemdb==0 || (vfsFlags&SQLITE_OPEN_URI)!=0) ){
if( vfsFlags & SQLITE_OPEN_SHAREDCACHE ){
+ int nFilename = sqlite3Strlen30(zFilename)+1;
int nFullPathname = pVfs->mxPathname+1;
- char *zFullPathname = sqlite3Malloc(nFullPathname);
+ char *zFullPathname = sqlite3Malloc(MAX(nFullPathname,nFilename));
MUTEX_LOGIC( sqlite3_mutex *mutexShared; )
+
p->sharable = 1;
if( !zFullPathname ){
sqlite3_free(p);
return SQLITE_NOMEM;
}
if( isMemdb ){
- memcpy(zFullPathname, zFilename, sqlite3Strlen30(zFilename)+1);
+ memcpy(zFullPathname, zFilename, nFilename);
}else{
rc = sqlite3OsFullPathname(pVfs, zFilename,
nFullPathname, zFullPathname);
** the right size. This is to guard against size changes that result
** when compiling on a different architecture.
*/
- assert( sizeof(i64)==8 || sizeof(i64)==4 );
- assert( sizeof(u64)==8 || sizeof(u64)==4 );
+ assert( sizeof(i64)==8 );
+ assert( sizeof(u64)==8 );
assert( sizeof(u32)==4 );
assert( sizeof(u16)==2 );
assert( sizeof(Pgno)==4 );
#ifdef SQLITE_SECURE_DELETE
pBt->btsFlags |= BTS_SECURE_DELETE;
#endif
+ /* EVIDENCE-OF: R-51873-39618 The page size for a database file is
+ ** determined by the 2-byte integer located at an offset of 16 bytes from
+ ** the beginning of the database file. */
pBt->pageSize = (zDbHeader[16]<<8) | (zDbHeader[17]<<16);
if( pBt->pageSize<512 || pBt->pageSize>SQLITE_MAX_PAGE_SIZE
|| ((pBt->pageSize-1)&pBt->pageSize)!=0 ){
#endif
nReserve = 0;
}else{
+ /* EVIDENCE-OF: R-37497-42412 The size of the reserved region is
+ ** determined by the one-byte unsigned integer found at an offset of 20
+ ** into the database file header. */
nReserve = zDbHeader[20];
pBt->btsFlags |= BTS_PAGESIZE_FIXED;
#ifndef SQLITE_OMIT_AUTOVACUUM
** The call to sqlite3BtreeRollback() drops any table-locks held by
** this handle.
*/
- sqlite3BtreeRollback(p, SQLITE_OK);
+ sqlite3BtreeRollback(p, SQLITE_OK, 0);
sqlite3BtreeLeave(p);
/* If there are still other outstanding references to the shared-btree
BtShared *pBt = p->pBt;
assert( nReserve>=-1 && nReserve<=255 );
sqlite3BtreeEnter(p);
+#if SQLITE_HAS_CODEC
+ if( nReserve>pBt->optimalReserve ) pBt->optimalReserve = (u8)nReserve;
+#endif
if( pBt->btsFlags & BTS_PAGESIZE_FIXED ){
sqlite3BtreeLeave(p);
return SQLITE_READONLY;
return p->pBt->pageSize;
}
-#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_DEBUG)
/*
** This function is similar to sqlite3BtreeGetReserve(), except that it
** may only be called if it is guaranteed that the b-tree mutex is already
** database handle that owns *p, causing undefined behavior.
*/
SQLITE_PRIVATE int sqlite3BtreeGetReserveNoMutex(Btree *p){
+ int n;
assert( sqlite3_mutex_held(p->pBt->mutex) );
- return p->pBt->pageSize - p->pBt->usableSize;
+ n = p->pBt->pageSize - p->pBt->usableSize;
+ return n;
}
-#endif /* SQLITE_HAS_CODEC || SQLITE_DEBUG */
-#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM)
/*
** Return the number of bytes of space at the end of every page that
** are intentually left unused. This is the "reserved" space that is
** sometimes used by extensions.
+**
+** If SQLITE_HAS_MUTEX is defined then the number returned is the
+** greater of the current reserved space and the maximum requested
+** reserve space.
*/
-SQLITE_PRIVATE int sqlite3BtreeGetReserve(Btree *p){
+SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree *p){
int n;
sqlite3BtreeEnter(p);
- n = p->pBt->pageSize - p->pBt->usableSize;
+ n = sqlite3BtreeGetReserveNoMutex(p);
+#ifdef SQLITE_HAS_CODEC
+ if( n<p->pBt->optimalReserve ) n = p->pBt->optimalReserve;
+#endif
sqlite3BtreeLeave(p);
return n;
}
+
/*
** Set the maximum page count for a database if mxPage is positive.
** No changes are made if mxPage is 0 or negative.
sqlite3BtreeLeave(p);
return b;
}
-#endif /* !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM) */
/*
** Change the 'auto-vacuum' property of the database. If the 'autoVacuum'
u32 usableSize;
u8 *page1 = pPage1->aData;
rc = SQLITE_NOTADB;
+ /* EVIDENCE-OF: R-43737-39999 Every valid SQLite database file begins
+ ** with the following 16 bytes (in hex): 53 51 4c 69 74 65 20 66 6f 72 6d
+ ** 61 74 20 33 00. */
if( memcmp(page1, zMagicHeader, 16)!=0 ){
goto page1_init_failed;
}
}
#endif
- /* The maximum embedded fraction must be exactly 25%. And the minimum
- ** embedded fraction must be 12.5% for both leaf-data and non-leaf-data.
+ /* EVIDENCE-OF: R-15465-20813 The maximum and minimum embedded payload
+ ** fractions and the leaf payload fraction values must be 64, 32, and 32.
+ **
** The original design allowed these amounts to vary, but as of
** version 3.6.0, we require them to be fixed.
*/
if( memcmp(&page1[21], "\100\040\040",3)!=0 ){
goto page1_init_failed;
}
+ /* EVIDENCE-OF: R-51873-39618 The page size for a database file is
+ ** determined by the 2-byte integer located at an offset of 16 bytes from
+ ** the beginning of the database file. */
pageSize = (page1[16]<<8) | (page1[17]<<16);
+ /* EVIDENCE-OF: R-25008-21688 The size of a page is a power of two
+ ** between 512 and 65536 inclusive. */
if( ((pageSize-1)&pageSize)!=0
|| pageSize>SQLITE_MAX_PAGE_SIZE
|| pageSize<=256
goto page1_init_failed;
}
assert( (pageSize & 7)==0 );
+ /* EVIDENCE-OF: R-59310-51205 The "reserved space" size in the 1-byte
+ ** integer at offset 20 is the number of bytes of space at the end of
+ ** each page to reserve for extensions.
+ **
+ ** EVIDENCE-OF: R-37497-42412 The size of the reserved region is
+ ** determined by the one-byte unsigned integer found at an offset of 20
+ ** into the database file header. */
usableSize = pageSize - page1[20];
if( (u32)pageSize!=pBt->pageSize ){
/* After reading the first page of the database assuming a page size
rc = SQLITE_CORRUPT_BKPT;
goto page1_init_failed;
}
+ /* EVIDENCE-OF: R-28312-64704 However, the usable size is not allowed to
+ ** be less than 480. In other words, if the page size is 512, then the
+ ** reserved space size cannot exceed 32. */
if( usableSize<480 ){
goto page1_init_failed;
}
sqlite3BtreeLeave(p);
return rc;
}
+ p->iDataVersion--; /* Compensate for pPager->iDataVersion++; */
pBt->inTransaction = TRANS_READ;
btreeClearHasContent(pBt);
}
/*
** This routine sets the state to CURSOR_FAULT and the error
-** code to errCode for every cursor on BtShared that pBtree
-** references.
-**
-** Every cursor is tripped, including cursors that belong
-** to other database connections that happen to be sharing
-** the cache with pBtree.
-**
-** This routine gets called when a rollback occurs.
-** All cursors using the same cache must be tripped
-** to prevent them from trying to use the btree after
-** the rollback. The rollback may have deleted tables
-** or moved root pages, so it is not sufficient to
-** save the state of the cursor. The cursor must be
-** invalidated.
-*/
-SQLITE_PRIVATE void sqlite3BtreeTripAllCursors(Btree *pBtree, int errCode){
+** code to errCode for every cursor on any BtShared that pBtree
+** references. Or if the writeOnly flag is set to 1, then only
+** trip write cursors and leave read cursors unchanged.
+**
+** Every cursor is a candidate to be tripped, including cursors
+** that belong to other database connections that happen to be
+** sharing the cache with pBtree.
+**
+** This routine gets called when a rollback occurs. If the writeOnly
+** flag is true, then only write-cursors need be tripped - read-only
+** cursors save their current positions so that they may continue
+** following the rollback. Or, if writeOnly is false, all cursors are
+** tripped. In general, writeOnly is false if the transaction being
+** rolled back modified the database schema. In this case b-tree root
+** pages may be moved or deleted from the database altogether, making
+** it unsafe for read cursors to continue.
+**
+** If the writeOnly flag is true and an error is encountered while
+** saving the current position of a read-only cursor, all cursors,
+** including all read-cursors are tripped.
+**
+** SQLITE_OK is returned if successful, or if an error occurs while
+** saving a cursor position, an SQLite error code.
+*/
+SQLITE_PRIVATE int sqlite3BtreeTripAllCursors(Btree *pBtree, int errCode, int writeOnly){
BtCursor *p;
- if( pBtree==0 ) return;
- sqlite3BtreeEnter(pBtree);
- for(p=pBtree->pBt->pCursor; p; p=p->pNext){
- int i;
- sqlite3BtreeClearCursor(p);
- p->eState = CURSOR_FAULT;
- p->skipNext = errCode;
- for(i=0; i<=p->iPage; i++){
- releasePage(p->apPage[i]);
- p->apPage[i] = 0;
+ int rc = SQLITE_OK;
+
+ assert( (writeOnly==0 || writeOnly==1) && BTCF_WriteFlag==1 );
+ if( pBtree ){
+ sqlite3BtreeEnter(pBtree);
+ for(p=pBtree->pBt->pCursor; p; p=p->pNext){
+ int i;
+ if( writeOnly && (p->curFlags & BTCF_WriteFlag)==0 ){
+ if( p->eState==CURSOR_VALID || p->eState==CURSOR_SKIPNEXT ){
+ rc = saveCursorPosition(p);
+ if( rc!=SQLITE_OK ){
+ (void)sqlite3BtreeTripAllCursors(pBtree, rc, 0);
+ break;
+ }
+ }
+ }else{
+ sqlite3BtreeClearCursor(p);
+ p->eState = CURSOR_FAULT;
+ p->skipNext = errCode;
+ }
+ for(i=0; i<=p->iPage; i++){
+ releasePage(p->apPage[i]);
+ p->apPage[i] = 0;
+ }
}
+ sqlite3BtreeLeave(pBtree);
}
- sqlite3BtreeLeave(pBtree);
+ return rc;
}
/*
-** Rollback the transaction in progress. All cursors will be
-** invalided by this operation. Any attempt to use a cursor
-** that was open at the beginning of this operation will result
-** in an error.
+** Rollback the transaction in progress.
+**
+** If tripCode is not SQLITE_OK then cursors will be invalidated (tripped).
+** Only write cursors are tripped if writeOnly is true but all cursors are
+** tripped if writeOnly is false. Any attempt to use
+** a tripped cursor will result in an error.
**
** This will release the write lock on the database file. If there
** are no active cursors, it also releases the read lock.
*/
-SQLITE_PRIVATE int sqlite3BtreeRollback(Btree *p, int tripCode){
+SQLITE_PRIVATE int sqlite3BtreeRollback(Btree *p, int tripCode, int writeOnly){
int rc;
BtShared *pBt = p->pBt;
MemPage *pPage1;
+ assert( writeOnly==1 || writeOnly==0 );
+ assert( tripCode==SQLITE_ABORT_ROLLBACK || tripCode==SQLITE_OK );
sqlite3BtreeEnter(p);
if( tripCode==SQLITE_OK ){
rc = tripCode = saveAllCursors(pBt, 0, 0);
+ if( rc ) writeOnly = 0;
}else{
rc = SQLITE_OK;
}
if( tripCode ){
- sqlite3BtreeTripAllCursors(p, tripCode);
+ int rc2 = sqlite3BtreeTripAllCursors(p, tripCode, writeOnly);
+ assert( rc==SQLITE_OK || (writeOnly==0 && rc2==SQLITE_OK) );
+ if( rc2!=SQLITE_OK ) rc = rc2;
}
btreeIntegrity(p);
releasePage(pCur->apPage[i]);
}
unlockBtreeIfUnused(pBt);
- sqlite3DbFree(pBtree->db, pCur->aOverflow);
+ sqlite3_free(pCur->aOverflow);
/* sqlite3_free(pCur); */
sqlite3BtreeLeave(pBtree);
}
*/
SQLITE_PRIVATE int sqlite3BtreeKeySize(BtCursor *pCur, i64 *pSize){
assert( cursorHoldsMutex(pCur) );
- assert( pCur->eState==CURSOR_INVALID || pCur->eState==CURSOR_VALID );
- if( pCur->eState!=CURSOR_VALID ){
- *pSize = 0;
- }else{
- getCellInfo(pCur);
- *pSize = pCur->info.nKey;
- }
+ assert( pCur->eState==CURSOR_VALID );
+ getCellInfo(pCur);
+ *pSize = pCur->info.nKey;
return SQLITE_OK;
}
SQLITE_PRIVATE int sqlite3BtreeDataSize(BtCursor *pCur, u32 *pSize){
assert( cursorHoldsMutex(pCur) );
assert( pCur->eState==CURSOR_VALID );
+ assert( pCur->iPage>=0 );
+ assert( pCur->iPage<BTCURSOR_MAX_DEPTH );
assert( pCur->apPage[pCur->iPage]->intKeyLeaf==1 );
getCellInfo(pCur);
*pSize = pCur->info.nPayload;
offset -= pCur->info.nLocal;
}
+
if( rc==SQLITE_OK && amt>0 ){
const u32 ovflSize = pBt->usableSize - 4; /* Bytes content per ovfl page */
Pgno nextPage;
if( eOp!=2 && (pCur->curFlags & BTCF_ValidOvfl)==0 ){
int nOvfl = (pCur->info.nPayload-pCur->info.nLocal+ovflSize-1)/ovflSize;
if( nOvfl>pCur->nOvflAlloc ){
- Pgno *aNew = (Pgno*)sqlite3DbRealloc(
- pCur->pBtree->db, pCur->aOverflow, nOvfl*2*sizeof(Pgno)
+ Pgno *aNew = (Pgno*)sqlite3Realloc(
+ pCur->aOverflow, nOvfl*2*sizeof(Pgno)
);
if( aNew==0 ){
rc = SQLITE_NOMEM;
*/
assert( eOp!=2 );
assert( pCur->curFlags & BTCF_ValidOvfl );
+ assert( pCur->pBtree->db==pBt->db );
if( pCur->aOverflow[iIdx+1] ){
nextPage = pCur->aOverflow[iIdx+1];
}else{
return SQLITE_OK;
}
-#if 0
+#if SQLITE_DEBUG
/*
** Page pParent is an internal (non-leaf) tree page. This function
** asserts that page number iChild is the left-child if the iIdx'th
** the page.
*/
static void assertParentIndex(MemPage *pParent, int iIdx, Pgno iChild){
+ if( CORRUPT_DB ) return; /* The conditions tested below might not be true
+ ** in a corrupt database */
assert( iIdx<=pParent->nCell );
if( iIdx==pParent->nCell ){
assert( get4byte(&pParent->aData[pParent->hdrOffset+8])==iChild );
assert( pCur->eState==CURSOR_VALID );
assert( pCur->iPage>0 );
assert( pCur->apPage[pCur->iPage] );
-
- /* UPDATE: It is actually possible for the condition tested by the assert
- ** below to be untrue if the database file is corrupt. This can occur if
- ** one cursor has modified page pParent while a reference to it is held
- ** by a second cursor. Which can only happen if a single page is linked
- ** into more than one b-tree structure in a corrupt database. */
-#if 0
assertParentIndex(
pCur->apPage[pCur->iPage-1],
pCur->aiIdx[pCur->iPage-1],
pCur->apPage[pCur->iPage]->pgno
);
-#endif
testcase( pCur->aiIdx[pCur->iPage-1] > pCur->apPage[pCur->iPage-1]->nCell );
releasePage(pCur->apPage[pCur->iPage]);
assert( eMode==BTALLOC_ANY || (nearby>0 && IfNotOmitAV(pBt->autoVacuum)) );
pPage1 = pBt->pPage1;
mxPage = btreePagecount(pBt);
+ /* EVIDENCE-OF: R-05119-02637 The 4-byte big-endian integer at offset 36
+ ** stores stores the total number of pages on the freelist. */
n = get4byte(&pPage1->aData[36]);
testcase( n==mxPage-1 );
if( n>=mxPage ){
do {
pPrevTrunk = pTrunk;
if( pPrevTrunk ){
+ /* EVIDENCE-OF: R-01506-11053 The first integer on a freelist trunk page
+ ** is the page number of the next freelist trunk page in the list or
+ ** zero if this is the last freelist trunk page. */
iTrunk = get4byte(&pPrevTrunk->aData[0]);
}else{
+ /* EVIDENCE-OF: R-59841-13798 The 4-byte big-endian integer at offset 32
+ ** stores the page number of the first page of the freelist, or zero if
+ ** the freelist is empty. */
iTrunk = get4byte(&pPage1->aData[32]);
}
testcase( iTrunk==mxPage );
}
assert( pTrunk!=0 );
assert( pTrunk->aData!=0 );
-
- k = get4byte(&pTrunk->aData[4]); /* # of leaves on this trunk page */
+ /* EVIDENCE-OF: R-13523-04394 The second integer on a freelist trunk page
+ ** is the number of leaf page pointers to follow. */
+ k = get4byte(&pTrunk->aData[4]);
if( k==0 && !searchList ){
/* The trunk has no leaves and the list is not being searched.
** So extract the trunk page itself and use it as the newly
** for now. At some point in the future (once everyone has upgraded
** to 3.6.0 or later) we should consider fixing the conditional above
** to read "usableSize/4-2" instead of "usableSize/4-8".
+ **
+ ** EVIDENCE-OF: R-19920-11576 However, newer versions of SQLite still
+ ** avoid using the last six entries in the freelist trunk page array in
+ ** order that database files created by newer versions of SQLite can be
+ ** read by older versions of SQLite.
*/
rc = sqlite3PagerWrite(pTrunk->pDbPage);
if( rc==SQLITE_OK ){
return;
}
pPage->nCell--;
- memmove(ptr, ptr+2, 2*(pPage->nCell - idx));
- put2byte(&data[hdr+3], pPage->nCell);
- pPage->nFree += 2;
+ if( pPage->nCell==0 ){
+ memset(&data[hdr+1], 0, 4);
+ data[hdr+7] = 0;
+ put2byte(&data[hdr+5], pPage->pBt->usableSize);
+ pPage->nFree = pPage->pBt->usableSize - pPage->hdrOffset
+ - pPage->childPtrSize - 8;
+ }else{
+ memmove(ptr, ptr+2, 2*(pPage->nCell - idx));
+ put2byte(&data[hdr+3], pPage->nCell);
+ pPage->nFree += 2;
+ }
}
/*
}
/*
-** Add a list of cells to a page. The page should be initially empty.
-** The cells are guaranteed to fit on the page.
+** Array apCell[] contains pointers to nCell b-tree page cells. The
+** szCell[] array contains the size in bytes of each cell. This function
+** replaces the current contents of page pPg with the contents of the cell
+** array.
+**
+** Some of the cells in apCell[] may currently be stored in pPg. This
+** function works around problems caused by this by making a copy of any
+** such cells before overwriting the page data.
+**
+** The MemPage.nFree field is invalidated by this function. It is the
+** responsibility of the caller to set it correctly.
*/
-static void assemblePage(
- MemPage *pPage, /* The page to be assembled */
- int nCell, /* The number of cells to add to this page */
- u8 **apCell, /* Pointers to cell bodies */
- u16 *aSize /* Sizes of the cells */
+static void rebuildPage(
+ MemPage *pPg, /* Edit this page */
+ int nCell, /* Final number of cells on page */
+ u8 **apCell, /* Array of cells */
+ u16 *szCell /* Array of cell sizes */
){
- int i; /* Loop counter */
- u8 *pCellptr; /* Address of next cell pointer */
- int cellbody; /* Address of next cell body */
- u8 * const data = pPage->aData; /* Pointer to data for pPage */
- const int hdr = pPage->hdrOffset; /* Offset of header on pPage */
- const int nUsable = pPage->pBt->usableSize; /* Usable size of page */
+ const int hdr = pPg->hdrOffset; /* Offset of header on pPg */
+ u8 * const aData = pPg->aData; /* Pointer to data for pPg */
+ const int usableSize = pPg->pBt->usableSize;
+ u8 * const pEnd = &aData[usableSize];
+ int i;
+ u8 *pCellptr = pPg->aCellIdx;
+ u8 *pTmp = sqlite3PagerTempSpace(pPg->pBt->pPager);
+ u8 *pData;
- assert( pPage->nOverflow==0 );
- assert( sqlite3_mutex_held(pPage->pBt->mutex) );
- assert( nCell>=0 && nCell<=(int)MX_CELL(pPage->pBt)
- && (int)MX_CELL(pPage->pBt)<=10921);
- assert( sqlite3PagerIswriteable(pPage->pDbPage) );
+ i = get2byte(&aData[hdr+5]);
+ memcpy(&pTmp[i], &aData[i], usableSize - i);
- /* Check that the page has just been zeroed by zeroPage() */
- assert( pPage->nCell==0 );
- assert( get2byteNotZero(&data[hdr+5])==nUsable );
+ pData = pEnd;
+ for(i=0; i<nCell; i++){
+ u8 *pCell = apCell[i];
+ if( pCell>aData && pCell<pEnd ){
+ pCell = &pTmp[pCell - aData];
+ }
+ pData -= szCell[i];
+ memcpy(pData, pCell, szCell[i]);
+ put2byte(pCellptr, (pData - aData));
+ pCellptr += 2;
+ assert( szCell[i]==cellSizePtr(pPg, pCell) );
+ }
- pCellptr = &pPage->aCellIdx[nCell*2];
- cellbody = nUsable;
- for(i=nCell-1; i>=0; i--){
- u16 sz = aSize[i];
- pCellptr -= 2;
- cellbody -= sz;
- put2byte(pCellptr, cellbody);
- memcpy(&data[cellbody], apCell[i], sz);
+ /* The pPg->nFree field is now set incorrectly. The caller will fix it. */
+ pPg->nCell = nCell;
+ pPg->nOverflow = 0;
+
+ put2byte(&aData[hdr+1], 0);
+ put2byte(&aData[hdr+3], pPg->nCell);
+ put2byte(&aData[hdr+5], pData - aData);
+ aData[hdr+7] = 0x00;
+}
+
+/*
+** Array apCell[] contains nCell pointers to b-tree cells. Array szCell
+** contains the size in bytes of each such cell. This function attempts to
+** add the cells stored in the array to page pPg. If it cannot (because
+** the page needs to be defragmented before the cells will fit), non-zero
+** is returned. Otherwise, if the cells are added successfully, zero is
+** returned.
+**
+** Argument pCellptr points to the first entry in the cell-pointer array
+** (part of page pPg) to populate. After cell apCell[0] is written to the
+** page body, a 16-bit offset is written to pCellptr. And so on, for each
+** cell in the array. It is the responsibility of the caller to ensure
+** that it is safe to overwrite this part of the cell-pointer array.
+**
+** When this function is called, *ppData points to the start of the
+** content area on page pPg. If the size of the content area is extended,
+** *ppData is updated to point to the new start of the content area
+** before returning.
+**
+** Finally, argument pBegin points to the byte immediately following the
+** end of the space required by this page for the cell-pointer area (for
+** all cells - not just those inserted by the current call). If the content
+** area must be extended to before this point in order to accomodate all
+** cells in apCell[], then the cells do not fit and non-zero is returned.
+*/
+static int pageInsertArray(
+ MemPage *pPg, /* Page to add cells to */
+ u8 *pBegin, /* End of cell-pointer array */
+ u8 **ppData, /* IN/OUT: Page content -area pointer */
+ u8 *pCellptr, /* Pointer to cell-pointer area */
+ int nCell, /* Number of cells to add to pPg */
+ u8 **apCell, /* Array of cells */
+ u16 *szCell /* Array of cell sizes */
+){
+ int i;
+ u8 *aData = pPg->aData;
+ u8 *pData = *ppData;
+ const int bFreelist = aData[1] || aData[2];
+ assert( CORRUPT_DB || pPg->hdrOffset==0 ); /* Never called on page 1 */
+ for(i=0; i<nCell; i++){
+ int sz = szCell[i];
+ int rc;
+ u8 *pSlot;
+ if( bFreelist==0 || (pSlot = pageFindSlot(pPg, sz, &rc, 0))==0 ){
+ pData -= sz;
+ if( pData<pBegin ) return 1;
+ pSlot = pData;
+ }
+ memcpy(pSlot, apCell[i], sz);
+ put2byte(pCellptr, (pSlot - aData));
+ pCellptr += 2;
}
- put2byte(&data[hdr+3], nCell);
- put2byte(&data[hdr+5], cellbody);
- pPage->nFree -= (nCell*2 + nUsable - cellbody);
- pPage->nCell = (u16)nCell;
+ *ppData = pData;
+ return 0;
+}
+
+/*
+** Array apCell[] contains nCell pointers to b-tree cells. Array szCell
+** contains the size in bytes of each such cell. This function adds the
+** space associated with each cell in the array that is currently stored
+** within the body of pPg to the pPg free-list. The cell-pointers and other
+** fields of the page are not updated.
+**
+** This function returns the total number of cells added to the free-list.
+*/
+static int pageFreeArray(
+ MemPage *pPg, /* Page to edit */
+ int nCell, /* Cells to delete */
+ u8 **apCell, /* Array of cells */
+ u16 *szCell /* Array of cell sizes */
+){
+ u8 * const aData = pPg->aData;
+ u8 * const pEnd = &aData[pPg->pBt->usableSize];
+ u8 * const pStart = &aData[pPg->hdrOffset + 8 + pPg->childPtrSize];
+ int nRet = 0;
+ int i;
+ u8 *pFree = 0;
+ int szFree = 0;
+
+ for(i=0; i<nCell; i++){
+ u8 *pCell = apCell[i];
+ if( pCell>=pStart && pCell<pEnd ){
+ int sz = szCell[i];
+ if( pFree!=(pCell + sz) ){
+ if( pFree ){
+ assert( pFree>aData && (pFree - aData)<65536 );
+ freeSpace(pPg, (u16)(pFree - aData), szFree);
+ }
+ pFree = pCell;
+ szFree = sz;
+ if( pFree+sz>pEnd ) return 0;
+ }else{
+ pFree = pCell;
+ szFree += sz;
+ }
+ nRet++;
+ }
+ }
+ if( pFree ){
+ assert( pFree>aData && (pFree - aData)<65536 );
+ freeSpace(pPg, (u16)(pFree - aData), szFree);
+ }
+ return nRet;
+}
+
+/*
+** apCell[] and szCell[] contains pointers to and sizes of all cells in the
+** pages being balanced. The current page, pPg, has pPg->nCell cells starting
+** with apCell[iOld]. After balancing, this page should hold nNew cells
+** starting at apCell[iNew].
+**
+** This routine makes the necessary adjustments to pPg so that it contains
+** the correct cells after being balanced.
+**
+** The pPg->nFree field is invalid when this function returns. It is the
+** responsibility of the caller to set it correctly.
+*/
+static void editPage(
+ MemPage *pPg, /* Edit this page */
+ int iOld, /* Index of first cell currently on page */
+ int iNew, /* Index of new first cell on page */
+ int nNew, /* Final number of cells on page */
+ u8 **apCell, /* Array of cells */
+ u16 *szCell /* Array of cell sizes */
+){
+ u8 * const aData = pPg->aData;
+ const int hdr = pPg->hdrOffset;
+ u8 *pBegin = &pPg->aCellIdx[nNew * 2];
+ int nCell = pPg->nCell; /* Cells stored on pPg */
+ u8 *pData;
+ u8 *pCellptr;
+ int i;
+ int iOldEnd = iOld + pPg->nCell + pPg->nOverflow;
+ int iNewEnd = iNew + nNew;
+
+#ifdef SQLITE_DEBUG
+ u8 *pTmp = sqlite3PagerTempSpace(pPg->pBt->pPager);
+ memcpy(pTmp, aData, pPg->pBt->usableSize);
+#endif
+
+ /* Remove cells from the start and end of the page */
+ if( iOld<iNew ){
+ int nShift = pageFreeArray(
+ pPg, iNew-iOld, &apCell[iOld], &szCell[iOld]
+ );
+ memmove(pPg->aCellIdx, &pPg->aCellIdx[nShift*2], nCell*2);
+ nCell -= nShift;
+ }
+ if( iNewEnd < iOldEnd ){
+ nCell -= pageFreeArray(
+ pPg, iOldEnd-iNewEnd, &apCell[iNewEnd], &szCell[iNewEnd]
+ );
+ }
+
+ pData = &aData[get2byteNotZero(&aData[hdr+5])];
+ if( pData<pBegin ) goto editpage_fail;
+
+ /* Add cells to the start of the page */
+ if( iNew<iOld ){
+ int nAdd = MIN(nNew,iOld-iNew);
+ assert( (iOld-iNew)<nNew || nCell==0 || CORRUPT_DB );
+ pCellptr = pPg->aCellIdx;
+ memmove(&pCellptr[nAdd*2], pCellptr, nCell*2);
+ if( pageInsertArray(
+ pPg, pBegin, &pData, pCellptr,
+ nAdd, &apCell[iNew], &szCell[iNew]
+ ) ) goto editpage_fail;
+ nCell += nAdd;
+ }
+
+ /* Add any overflow cells */
+ for(i=0; i<pPg->nOverflow; i++){
+ int iCell = (iOld + pPg->aiOvfl[i]) - iNew;
+ if( iCell>=0 && iCell<nNew ){
+ pCellptr = &pPg->aCellIdx[iCell * 2];
+ memmove(&pCellptr[2], pCellptr, (nCell - iCell) * 2);
+ nCell++;
+ if( pageInsertArray(
+ pPg, pBegin, &pData, pCellptr,
+ 1, &apCell[iCell + iNew], &szCell[iCell + iNew]
+ ) ) goto editpage_fail;
+ }
+ }
+
+ /* Append cells to the end of the page */
+ pCellptr = &pPg->aCellIdx[nCell*2];
+ if( pageInsertArray(
+ pPg, pBegin, &pData, pCellptr,
+ nNew-nCell, &apCell[iNew+nCell], &szCell[iNew+nCell]
+ ) ) goto editpage_fail;
+
+ pPg->nCell = nNew;
+ pPg->nOverflow = 0;
+
+ put2byte(&aData[hdr+3], pPg->nCell);
+ put2byte(&aData[hdr+5], pData - aData);
+
+#ifdef SQLITE_DEBUG
+ for(i=0; i<nNew && !CORRUPT_DB; i++){
+ u8 *pCell = apCell[i+iNew];
+ int iOff = get2byte(&pPg->aCellIdx[i*2]);
+ if( pCell>=aData && pCell<&aData[pPg->pBt->usableSize] ){
+ pCell = &pTmp[pCell - aData];
+ }
+ assert( 0==memcmp(pCell, &aData[iOff], szCell[i+iNew]) );
+ }
+#endif
+
+ return;
+ editpage_fail:
+ /* Unable to edit this page. Rebuild it from scratch instead. */
+ rebuildPage(pPg, nNew, &apCell[iNew], &szCell[iNew]);
}
/*
assert( pPage->nOverflow==1 );
/* This error condition is now caught prior to reaching this function */
- if( pPage->nCell==0 ) return SQLITE_CORRUPT_BKPT;
+ if( NEVER(pPage->nCell==0) ) return SQLITE_CORRUPT_BKPT;
/* Allocate a new page. This page will become the right-sibling of
** pPage. Make the parent page writable, so that the new divider cell
assert( sqlite3PagerIswriteable(pNew->pDbPage) );
assert( pPage->aData[0]==(PTF_INTKEY|PTF_LEAFDATA|PTF_LEAF) );
zeroPage(pNew, PTF_INTKEY|PTF_LEAFDATA|PTF_LEAF);
- assemblePage(pNew, 1, &pCell, &szCell);
+ rebuildPage(pNew, 1, &pCell, &szCell);
+ pNew->nFree = pBt->usableSize - pNew->cellOffset - 2 - szCell;
/* If this is an auto-vacuum database, update the pointer map
** with entries for the new page, and any pointer from the
int iOvflSpace = 0; /* First unused byte of aOvflSpace[] */
int szScratch; /* Size of scratch memory requested */
MemPage *apOld[NB]; /* pPage and up to two siblings */
- MemPage *apCopy[NB]; /* Private copies of apOld[] pages */
MemPage *apNew[NB+2]; /* pPage and up to NB siblings after balancing */
u8 *pRight; /* Location in parent of right-sibling pointer */
u8 *apDiv[NB-1]; /* Divider cells in pParent */
int cntNew[NB+2]; /* Index in aCell[] of cell after i-th page */
- int szNew[NB+2]; /* Combined size of cells place on i-th page */
+ int cntOld[NB+2]; /* Old index in aCell[] after i-th page */
+ int szNew[NB+2]; /* Combined size of cells placed on i-th page */
u8 **apCell = 0; /* All cells begin balanced */
u16 *szCell; /* Local size of all cells in apCell[] */
u8 *aSpace1; /* Space for copies of dividers cells */
Pgno pgno; /* Temp var to store a page number in */
+ u8 abDone[NB+2]; /* True after i'th new page is populated */
+ Pgno aPgno[NB+2]; /* Page numbers of new pages before shuffling */
+ Pgno aPgOrder[NB+2]; /* Copy of aPgno[] used for sorting pages */
+ u16 aPgFlags[NB+2]; /* flags field of new pages before shuffling */
+ memset(abDone, 0, sizeof(abDone));
pBt = pParent->pBt;
assert( sqlite3_mutex_held(pBt->mutex) );
assert( sqlite3PagerIswriteable(pParent->pDbPage) );
/*
** Allocate space for memory structures
*/
- k = pBt->pageSize + ROUND8(sizeof(MemPage));
szScratch =
nMaxCells*sizeof(u8*) /* apCell */
+ nMaxCells*sizeof(u16) /* szCell */
- + pBt->pageSize /* aSpace1 */
- + k*nOld; /* Page copies (apCopy) */
+ + pBt->pageSize; /* aSpace1 */
+
+ /* EVIDENCE-OF: R-28375-38319 SQLite will never request a scratch buffer
+ ** that is more than 6 times the database page size. */
+ assert( szScratch<=6*(int)pBt->pageSize );
apCell = sqlite3ScratchMalloc( szScratch );
if( apCell==0 ){
rc = SQLITE_NOMEM;
/*
** Load pointers to all cells on sibling pages and the divider cells
** into the local apCell[] array. Make copies of the divider cells
- ** into space obtained from aSpace1[] and remove the divider cells
- ** from pParent.
+ ** into space obtained from aSpace1[]. The divider cells have already
+ ** been removed from pParent.
**
** If the siblings are on leaf pages, then the child pointers of the
** divider cells are stripped from the cells before they are copied
leafData = apOld[0]->intKeyLeaf;
for(i=0; i<nOld; i++){
int limit;
-
- /* Before doing anything else, take a copy of the i'th original sibling
- ** The rest of this function will use data from the copies rather
- ** that the original pages since the original pages will be in the
- ** process of being overwritten. */
- MemPage *pOld = apCopy[i] = (MemPage*)&aSpace1[pBt->pageSize + k*i];
- memcpy(pOld, apOld[i], sizeof(MemPage));
- pOld->aData = (void*)&pOld[1];
- memcpy(pOld->aData, apOld[i]->aData, pBt->pageSize);
+ MemPage *pOld = apOld[i];
limit = pOld->nCell+pOld->nOverflow;
if( pOld->nOverflow>0 ){
nCell++;
}
}
+ cntOld[i] = nCell;
if( i<nOld-1 && !leafData){
u16 sz = (u16)szNew[i];
u8 *pTemp;
}else{
assert( leafCorrection==4 );
if( szCell[nCell]<4 ){
- /* Do not allow any cells smaller than 4 bytes. */
+ /* Do not allow any cells smaller than 4 bytes. If a smaller cell
+ ** does exist, pad it with 0x00 bytes. */
+ assert( szCell[nCell]==3 );
+ assert( apCell[nCell]==&aSpace1[iSpace1-3] );
+ aSpace1[iSpace1++] = 0x00;
szCell[nCell] = 4;
}
}
assert( i<nMaxCells );
subtotal += szCell[i] + 2;
if( subtotal > usableSpace ){
- szNew[k] = subtotal - szCell[i];
+ szNew[k] = subtotal - szCell[i] - 2;
cntNew[k] = i;
if( leafData ){ i--; }
subtotal = 0;
/*
** The packing computed by the previous block is biased toward the siblings
- ** on the left side. The left siblings are always nearly full, while the
- ** right-most sibling might be nearly empty. This block of code attempts
- ** to adjust the packing of siblings to get a better balance.
+ ** on the left side (siblings with smaller keys). The left siblings are
+ ** always nearly full, while the right-most sibling might be nearly empty.
+ ** The next block of code attempts to adjust the packing of siblings to
+ ** get a better balance.
**
** This adjustment is more than an optimization. The packing above might
** be so out of balance as to be illegal. For example, the right-most
szNew[i-1] = szLeft;
}
- /* Either we found one or more cells (cntnew[0])>0) or pPage is
- ** a virtual root page. A virtual root page is when the real root
- ** page is page 1 and we are the only child of that page.
- **
- ** UPDATE: The assert() below is not necessarily true if the database
- ** file is corrupt. The corruption will be detected and reported later
- ** in this procedure so there is no need to act upon it now.
+ /* Sanity check: For a non-corrupt database file one of the follwing
+ ** must be true:
+ ** (1) We found one or more cells (cntNew[0])>0), or
+ ** (2) pPage is a virtual root page. A virtual root page is when
+ ** the real root page is page 1 and we are the only child of
+ ** that page.
*/
-#if 0
- assert( cntNew[0]>0 || (pParent->pgno==1 && pParent->nCell==0) );
-#endif
-
- TRACE(("BALANCE: old: %d %d %d ",
- apOld[0]->pgno,
- nOld>=2 ? apOld[1]->pgno : 0,
- nOld>=3 ? apOld[2]->pgno : 0
+ assert( cntNew[0]>0 || (pParent->pgno==1 && pParent->nCell==0) || CORRUPT_DB);
+ TRACE(("BALANCE: old: %d(nc=%d) %d(nc=%d) %d(nc=%d)\n",
+ apOld[0]->pgno, apOld[0]->nCell,
+ nOld>=2 ? apOld[1]->pgno : 0, nOld>=2 ? apOld[1]->nCell : 0,
+ nOld>=3 ? apOld[2]->pgno : 0, nOld>=3 ? apOld[2]->nCell : 0
));
/*
assert( i>0 );
rc = allocateBtreePage(pBt, &pNew, &pgno, (bBulk ? 1 : pgno), 0);
if( rc ) goto balance_cleanup;
+ zeroPage(pNew, pageFlags);
apNew[i] = pNew;
nNew++;
+ cntOld[i] = nCell;
/* Set the pointer-map entry for the new sibling page. */
if( ISAUTOVACUUM ){
}
}
- /* Free any old pages that were not reused as new pages.
- */
- while( i<nOld ){
- freePage(apOld[i], &rc);
- if( rc ) goto balance_cleanup;
- releasePage(apOld[i]);
- apOld[i] = 0;
- i++;
- }
-
/*
- ** Put the new pages in ascending order. This helps to
- ** keep entries in the disk file in order so that a scan
- ** of the table is a linear scan through the file. That
- ** in turn helps the operating system to deliver pages
- ** from the disk more rapidly.
+ ** Reassign page numbers so that the new pages are in ascending order.
+ ** This helps to keep entries in the disk file in order so that a scan
+ ** of the table is closer to a linear scan through the file. That in turn
+ ** helps the operating system to deliver pages from the disk more rapidly.
**
- ** An O(n^2) insertion sort algorithm is used, but since
- ** n is never more than NB (a small constant), that should
- ** not be a problem.
+ ** An O(n^2) insertion sort algorithm is used, but since n is never more
+ ** than (NB+2) (a small constant), that should not be a problem.
**
- ** When NB==3, this one optimization makes the database
- ** about 25% faster for large insertions and deletions.
+ ** When NB==3, this one optimization makes the database about 25% faster
+ ** for large insertions and deletions.
*/
- for(i=0; i<k-1; i++){
- int minV = apNew[i]->pgno;
- int minI = i;
- for(j=i+1; j<k; j++){
- if( apNew[j]->pgno<(unsigned)minV ){
- minI = j;
- minV = apNew[j]->pgno;
+ for(i=0; i<nNew; i++){
+ aPgOrder[i] = aPgno[i] = apNew[i]->pgno;
+ aPgFlags[i] = apNew[i]->pDbPage->flags;
+ for(j=0; j<i; j++){
+ if( aPgno[j]==aPgno[i] ){
+ /* This branch is taken if the set of sibling pages somehow contains
+ ** duplicate entries. This can happen if the database is corrupt.
+ ** It would be simpler to detect this as part of the loop below, but
+ ** we do the detection here in order to avoid populating the pager
+ ** cache with two separate objects associated with the same
+ ** page number. */
+ assert( CORRUPT_DB );
+ rc = SQLITE_CORRUPT_BKPT;
+ goto balance_cleanup;
}
}
- if( minI>i ){
- MemPage *pT;
- pT = apNew[i];
- apNew[i] = apNew[minI];
- apNew[minI] = pT;
+ }
+ for(i=0; i<nNew; i++){
+ int iBest = 0; /* aPgno[] index of page number to use */
+ for(j=1; j<nNew; j++){
+ if( aPgOrder[j]<aPgOrder[iBest] ) iBest = j;
+ }
+ pgno = aPgOrder[iBest];
+ aPgOrder[iBest] = 0xffffffff;
+ if( iBest!=i ){
+ if( iBest>i ){
+ sqlite3PagerRekey(apNew[iBest]->pDbPage, pBt->nPage+iBest+1, 0);
+ }
+ sqlite3PagerRekey(apNew[i]->pDbPage, pgno, aPgFlags[iBest]);
+ apNew[i]->pgno = pgno;
}
}
- TRACE(("new: %d(%d) %d(%d) %d(%d) %d(%d) %d(%d)\n",
- apNew[0]->pgno, szNew[0],
+
+ TRACE(("BALANCE: new: %d(%d nc=%d) %d(%d nc=%d) %d(%d nc=%d) "
+ "%d(%d nc=%d) %d(%d nc=%d)\n",
+ apNew[0]->pgno, szNew[0], cntNew[0],
nNew>=2 ? apNew[1]->pgno : 0, nNew>=2 ? szNew[1] : 0,
+ nNew>=2 ? cntNew[1] - cntNew[0] - !leafData : 0,
nNew>=3 ? apNew[2]->pgno : 0, nNew>=3 ? szNew[2] : 0,
+ nNew>=3 ? cntNew[2] - cntNew[1] - !leafData : 0,
nNew>=4 ? apNew[3]->pgno : 0, nNew>=4 ? szNew[3] : 0,
- nNew>=5 ? apNew[4]->pgno : 0, nNew>=5 ? szNew[4] : 0));
+ nNew>=4 ? cntNew[3] - cntNew[2] - !leafData : 0,
+ nNew>=5 ? apNew[4]->pgno : 0, nNew>=5 ? szNew[4] : 0,
+ nNew>=5 ? cntNew[4] - cntNew[3] - !leafData : 0
+ ));
assert( sqlite3PagerIswriteable(pParent->pDbPage) );
put4byte(pRight, apNew[nNew-1]->pgno);
- /*
- ** Evenly distribute the data in apCell[] across the new pages.
- ** Insert divider cells into pParent as necessary.
+ /* If the sibling pages are not leaves, ensure that the right-child pointer
+ ** of the right-most new sibling page is set to the value that was
+ ** originally in the same field of the right-most old sibling page. */
+ if( (pageFlags & PTF_LEAF)==0 && nOld!=nNew ){
+ MemPage *pOld = (nNew>nOld ? apNew : apOld)[nOld-1];
+ memcpy(&apNew[nNew-1]->aData[8], &pOld->aData[8], 4);
+ }
+
+ /* Make any required updates to pointer map entries associated with
+ ** cells stored on sibling pages following the balance operation. Pointer
+ ** map entries associated with divider cells are set by the insertCell()
+ ** routine. The associated pointer map entries are:
+ **
+ ** a) if the cell contains a reference to an overflow chain, the
+ ** entry associated with the first page in the overflow chain, and
+ **
+ ** b) if the sibling pages are not leaves, the child page associated
+ ** with the cell.
+ **
+ ** If the sibling pages are not leaves, then the pointer map entry
+ ** associated with the right-child of each sibling may also need to be
+ ** updated. This happens below, after the sibling pages have been
+ ** populated, not here.
*/
- j = 0;
- for(i=0; i<nNew; i++){
- /* Assemble the new sibling page. */
+ if( ISAUTOVACUUM ){
+ MemPage *pNew = apNew[0];
+ u8 *aOld = pNew->aData;
+ int cntOldNext = pNew->nCell + pNew->nOverflow;
+ int usableSize = pBt->usableSize;
+ int iNew = 0;
+ int iOld = 0;
+
+ for(i=0; i<nCell; i++){
+ u8 *pCell = apCell[i];
+ if( i==cntOldNext ){
+ MemPage *pOld = (++iOld)<nNew ? apNew[iOld] : apOld[iOld];
+ cntOldNext += pOld->nCell + pOld->nOverflow + !leafData;
+ aOld = pOld->aData;
+ }
+ if( i==cntNew[iNew] ){
+ pNew = apNew[++iNew];
+ if( !leafData ) continue;
+ }
+
+ /* Cell pCell is destined for new sibling page pNew. Originally, it
+ ** was either part of sibling page iOld (possibly an overflow cell),
+ ** or else the divider cell to the left of sibling page iOld. So,
+ ** if sibling page iOld had the same page number as pNew, and if
+ ** pCell really was a part of sibling page iOld (not a divider or
+ ** overflow cell), we can skip updating the pointer map entries. */
+ if( iOld>=nNew
+ || pNew->pgno!=aPgno[iOld]
+ || pCell<aOld
+ || pCell>=&aOld[usableSize]
+ ){
+ if( !leafCorrection ){
+ ptrmapPut(pBt, get4byte(pCell), PTRMAP_BTREE, pNew->pgno, &rc);
+ }
+ if( szCell[i]>pNew->minLocal ){
+ ptrmapPutOvflPtr(pNew, pCell, &rc);
+ }
+ }
+ }
+ }
+
+ /* Insert new divider cells into pParent. */
+ for(i=0; i<nNew-1; i++){
+ u8 *pCell;
+ u8 *pTemp;
+ int sz;
MemPage *pNew = apNew[i];
+ j = cntNew[i];
+
assert( j<nMaxCells );
- zeroPage(pNew, pageFlags);
- assemblePage(pNew, cntNew[i]-j, &apCell[j], &szCell[j]);
- assert( pNew->nCell>0 || (nNew==1 && cntNew[0]==0) );
- assert( pNew->nOverflow==0 );
+ pCell = apCell[j];
+ sz = szCell[j] + leafCorrection;
+ pTemp = &aOvflSpace[iOvflSpace];
+ if( !pNew->leaf ){
+ memcpy(&pNew->aData[8], pCell, 4);
+ }else if( leafData ){
+ /* If the tree is a leaf-data tree, and the siblings are leaves,
+ ** then there is no divider cell in apCell[]. Instead, the divider
+ ** cell consists of the integer key for the right-most cell of
+ ** the sibling-page assembled above only.
+ */
+ CellInfo info;
+ j--;
+ btreeParseCellPtr(pNew, apCell[j], &info);
+ pCell = pTemp;
+ sz = 4 + putVarint(&pCell[4], info.nKey);
+ pTemp = 0;
+ }else{
+ pCell -= 4;
+ /* Obscure case for non-leaf-data trees: If the cell at pCell was
+ ** previously stored on a leaf node, and its reported size was 4
+ ** bytes, then it may actually be smaller than this
+ ** (see btreeParseCellPtr(), 4 bytes is the minimum size of
+ ** any cell). But it is important to pass the correct size to
+ ** insertCell(), so reparse the cell now.
+ **
+ ** Note that this can never happen in an SQLite data file, as all
+ ** cells are at least 4 bytes. It only happens in b-trees used
+ ** to evaluate "IN (SELECT ...)" and similar clauses.
+ */
+ if( szCell[j]==4 ){
+ assert(leafCorrection==4);
+ sz = cellSizePtr(pParent, pCell);
+ }
+ }
+ iOvflSpace += sz;
+ assert( sz<=pBt->maxLocal+23 );
+ assert( iOvflSpace <= (int)pBt->pageSize );
+ insertCell(pParent, nxDiv+i, pCell, sz, pTemp, pNew->pgno, &rc);
+ if( rc!=SQLITE_OK ) goto balance_cleanup;
+ assert( sqlite3PagerIswriteable(pParent->pDbPage) );
+ }
- j = cntNew[i];
+ /* Now update the actual sibling pages. The order in which they are updated
+ ** is important, as this code needs to avoid disrupting any page from which
+ ** cells may still to be read. In practice, this means:
+ **
+ ** (1) If cells are moving left (from apNew[iPg] to apNew[iPg-1])
+ ** then it is not safe to update page apNew[iPg] until after
+ ** the left-hand sibling apNew[iPg-1] has been updated.
+ **
+ ** (2) If cells are moving right (from apNew[iPg] to apNew[iPg+1])
+ ** then it is not safe to update page apNew[iPg] until after
+ ** the right-hand sibling apNew[iPg+1] has been updated.
+ **
+ ** If neither of the above apply, the page is safe to update.
+ **
+ ** The iPg value in the following loop starts at nNew-1 goes down
+ ** to 0, then back up to nNew-1 again, thus making two passes over
+ ** the pages. On the initial downward pass, only condition (1) above
+ ** needs to be tested because (2) will always be true from the previous
+ ** step. On the upward pass, both conditions are always true, so the
+ ** upwards pass simply processes pages that were missed on the downward
+ ** pass.
+ */
+ for(i=1-nNew; i<nNew; i++){
+ int iPg = i<0 ? -i : i;
+ assert( iPg>=0 && iPg<nNew );
+ if( abDone[iPg] ) continue; /* Skip pages already processed */
+ if( i>=0 /* On the upwards pass, or... */
+ || cntOld[iPg-1]>=cntNew[iPg-1] /* Condition (1) is true */
+ ){
+ int iNew;
+ int iOld;
+ int nNewCell;
- /* If the sibling page assembled above was not the right-most sibling,
- ** insert a divider cell into the parent page.
- */
- assert( i<nNew-1 || j==nCell );
- if( j<nCell ){
- u8 *pCell;
- u8 *pTemp;
- int sz;
+ /* Verify condition (1): If cells are moving left, update iPg
+ ** only after iPg-1 has already been updated. */
+ assert( iPg==0 || cntOld[iPg-1]>=cntNew[iPg-1] || abDone[iPg-1] );
- assert( j<nMaxCells );
- pCell = apCell[j];
- sz = szCell[j] + leafCorrection;
- pTemp = &aOvflSpace[iOvflSpace];
- if( !pNew->leaf ){
- memcpy(&pNew->aData[8], pCell, 4);
- }else if( leafData ){
- /* If the tree is a leaf-data tree, and the siblings are leaves,
- ** then there is no divider cell in apCell[]. Instead, the divider
- ** cell consists of the integer key for the right-most cell of
- ** the sibling-page assembled above only.
- */
- CellInfo info;
- j--;
- btreeParseCellPtr(pNew, apCell[j], &info);
- pCell = pTemp;
- sz = 4 + putVarint(&pCell[4], info.nKey);
- pTemp = 0;
+ /* Verify condition (2): If cells are moving right, update iPg
+ ** only after iPg+1 has already been updated. */
+ assert( cntNew[iPg]>=cntOld[iPg] || abDone[iPg+1] );
+
+ if( iPg==0 ){
+ iNew = iOld = 0;
+ nNewCell = cntNew[0];
}else{
- pCell -= 4;
- /* Obscure case for non-leaf-data trees: If the cell at pCell was
- ** previously stored on a leaf node, and its reported size was 4
- ** bytes, then it may actually be smaller than this
- ** (see btreeParseCellPtr(), 4 bytes is the minimum size of
- ** any cell). But it is important to pass the correct size to
- ** insertCell(), so reparse the cell now.
- **
- ** Note that this can never happen in an SQLite data file, as all
- ** cells are at least 4 bytes. It only happens in b-trees used
- ** to evaluate "IN (SELECT ...)" and similar clauses.
- */
- if( szCell[j]==4 ){
- assert(leafCorrection==4);
- sz = cellSizePtr(pParent, pCell);
- }
+ iOld = iPg<nOld ? (cntOld[iPg-1] + !leafData) : nCell;
+ iNew = cntNew[iPg-1] + !leafData;
+ nNewCell = cntNew[iPg] - iNew;
}
- iOvflSpace += sz;
- assert( sz<=pBt->maxLocal+23 );
- assert( iOvflSpace <= (int)pBt->pageSize );
- insertCell(pParent, nxDiv, pCell, sz, pTemp, pNew->pgno, &rc);
- if( rc!=SQLITE_OK ) goto balance_cleanup;
- assert( sqlite3PagerIswriteable(pParent->pDbPage) );
- j++;
- nxDiv++;
+ editPage(apNew[iPg], iOld, iNew, nNewCell, apCell, szCell);
+ abDone[iPg]++;
+ apNew[iPg]->nFree = usableSpace-szNew[iPg];
+ assert( apNew[iPg]->nOverflow==0 );
+ assert( apNew[iPg]->nCell==nNewCell );
}
}
- assert( j==nCell );
+
+ /* All pages have been processed exactly once */
+ assert( memcmp(abDone, "\01\01\01\01\01", nNew)==0 );
+
assert( nOld>0 );
assert( nNew>0 );
- if( (pageFlags & PTF_LEAF)==0 ){
- u8 *zChild = &apCopy[nOld-1]->aData[8];
- memcpy(&apNew[nNew-1]->aData[8], zChild, 4);
- }
if( isRoot && pParent->nCell==0 && pParent->hdrOffset<=apNew[0]->nFree ){
/* The root page of the b-tree now contains no cells. The only sibling
** sets all pointer-map entries corresponding to database image pages
** for which the pointer is stored within the content being copied.
**
- ** The second assert below verifies that the child page is defragmented
- ** (it must be, as it was just reconstructed using assemblePage()). This
- ** is important if the parent page happens to be page 1 of the database
- ** image. */
+ ** It is critical that the child page be defragmented before being
+ ** copied into the parent, because if the parent is page 1 then it will
+ ** by smaller than the child due to the database header, and so all the
+ ** free space needs to be up front.
+ */
assert( nNew==1 );
+ rc = defragmentPage(apNew[0]);
+ testcase( rc!=SQLITE_OK );
assert( apNew[0]->nFree ==
- (get2byte(&apNew[0]->aData[5])-apNew[0]->cellOffset-apNew[0]->nCell*2)
+ (get2byte(&apNew[0]->aData[5])-apNew[0]->cellOffset-apNew[0]->nCell*2)
+ || rc!=SQLITE_OK
);
copyNodeContent(apNew[0], pParent, &rc);
freePage(apNew[0], &rc);
- }else if( ISAUTOVACUUM ){
- /* Fix the pointer-map entries for all the cells that were shifted around.
- ** There are several different types of pointer-map entries that need to
- ** be dealt with by this routine. Some of these have been set already, but
- ** many have not. The following is a summary:
- **
- ** 1) The entries associated with new sibling pages that were not
- ** siblings when this function was called. These have already
- ** been set. We don't need to worry about old siblings that were
- ** moved to the free-list - the freePage() code has taken care
- ** of those.
- **
- ** 2) The pointer-map entries associated with the first overflow
- ** page in any overflow chains used by new divider cells. These
- ** have also already been taken care of by the insertCell() code.
- **
- ** 3) If the sibling pages are not leaves, then the child pages of
- ** cells stored on the sibling pages may need to be updated.
- **
- ** 4) If the sibling pages are not internal intkey nodes, then any
- ** overflow pages used by these cells may need to be updated
- ** (internal intkey nodes never contain pointers to overflow pages).
- **
- ** 5) If the sibling pages are not leaves, then the pointer-map
- ** entries for the right-child pages of each sibling may need
- ** to be updated.
- **
- ** Cases 1 and 2 are dealt with above by other code. The next
- ** block deals with cases 3 and 4 and the one after that, case 5. Since
- ** setting a pointer map entry is a relatively expensive operation, this
- ** code only sets pointer map entries for child or overflow pages that have
- ** actually moved between pages. */
- MemPage *pNew = apNew[0];
- MemPage *pOld = apCopy[0];
- int nOverflow = pOld->nOverflow;
- int iNextOld = pOld->nCell + nOverflow;
- int iOverflow = (nOverflow ? pOld->aiOvfl[0] : -1);
- j = 0; /* Current 'old' sibling page */
- k = 0; /* Current 'new' sibling page */
- for(i=0; i<nCell; i++){
- int isDivider = 0;
- while( i==iNextOld ){
- /* Cell i is the cell immediately following the last cell on old
- ** sibling page j. If the siblings are not leaf pages of an
- ** intkey b-tree, then cell i was a divider cell. */
- assert( j+1 < ArraySize(apCopy) );
- assert( j+1 < nOld );
- pOld = apCopy[++j];
- iNextOld = i + !leafData + pOld->nCell + pOld->nOverflow;
- if( pOld->nOverflow ){
- nOverflow = pOld->nOverflow;
- iOverflow = i + !leafData + pOld->aiOvfl[0];
- }
- isDivider = !leafData;
- }
-
- assert(nOverflow>0 || iOverflow<i );
- assert(nOverflow<2 || pOld->aiOvfl[0]==pOld->aiOvfl[1]-1);
- assert(nOverflow<3 || pOld->aiOvfl[1]==pOld->aiOvfl[2]-1);
- if( i==iOverflow ){
- isDivider = 1;
- if( (--nOverflow)>0 ){
- iOverflow++;
- }
- }
-
- if( i==cntNew[k] ){
- /* Cell i is the cell immediately following the last cell on new
- ** sibling page k. If the siblings are not leaf pages of an
- ** intkey b-tree, then cell i is a divider cell. */
- pNew = apNew[++k];
- if( !leafData ) continue;
- }
- assert( j<nOld );
- assert( k<nNew );
-
- /* If the cell was originally divider cell (and is not now) or
- ** an overflow cell, or if the cell was located on a different sibling
- ** page before the balancing, then the pointer map entries associated
- ** with any child or overflow pages need to be updated. */
- if( isDivider || pOld->pgno!=pNew->pgno ){
- if( !leafCorrection ){
- ptrmapPut(pBt, get4byte(apCell[i]), PTRMAP_BTREE, pNew->pgno, &rc);
- }
- if( szCell[i]>pNew->minLocal ){
- ptrmapPutOvflPtr(pNew, apCell[i], &rc);
- }
- }
+ }else if( ISAUTOVACUUM && !leafCorrection ){
+ /* Fix the pointer map entries associated with the right-child of each
+ ** sibling page. All other pointer map entries have already been taken
+ ** care of. */
+ for(i=0; i<nNew; i++){
+ u32 key = get4byte(&apNew[i]->aData[8]);
+ ptrmapPut(pBt, key, PTRMAP_BTREE, apNew[i]->pgno, &rc);
}
+ }
- if( !leafCorrection ){
- for(i=0; i<nNew; i++){
- u32 key = get4byte(&apNew[i]->aData[8]);
- ptrmapPut(pBt, key, PTRMAP_BTREE, apNew[i]->pgno, &rc);
- }
- }
+ assert( pParent->isInit );
+ TRACE(("BALANCE: finished: old=%d new=%d cells=%d\n",
+ nOld, nNew, nCell));
+
+ /* Free any old pages that were not reused as new pages.
+ */
+ for(i=nNew; i<nOld; i++){
+ freePage(apOld[i], &rc);
+ }
#if 0
+ if( ISAUTOVACUUM && rc==SQLITE_OK && apNew[0]->isInit ){
/* The ptrmapCheckPages() contains assert() statements that verify that
** all pointer map pages are set correctly. This is helpful while
** debugging. This is usually disabled because a corrupt database may
** cause an assert() statement to fail. */
ptrmapCheckPages(apNew, nNew);
ptrmapCheckPages(&pParent, 1);
-#endif
}
-
- assert( pParent->isInit );
- TRACE(("BALANCE: finished: old=%d new=%d cells=%d\n",
- nOld, nNew, nCell));
+#endif
/*
** Cleanup before returning.
** pSpace buffer passed to the latter call to balance_nonroot().
*/
u8 *pSpace = sqlite3PageMalloc(pCur->pBt->pageSize);
- rc = balance_nonroot(pParent, iIdx, pSpace, iPage==1, pCur->hints);
+ rc = balance_nonroot(pParent, iIdx, pSpace, iPage==1,
+ pCur->hints&BTREE_BULKLOAD);
if( pFree ){
/* If pFree is not NULL, it points to the pSpace buffer used
** by a previous call to balance_nonroot(). Its contents are
/* The next iteration of the do-loop balances the parent page. */
releasePage(pPage);
pCur->iPage--;
+ assert( pCur->iPage>=0 );
}
}while( rc==SQLITE_OK );
if( pgno>btreePagecount(pBt) ){
return SQLITE_CORRUPT_BKPT;
}
-
rc = getAndInitPage(pBt, pgno, &pPage, 0);
if( rc ) return rc;
+ if( pPage->bBusy ){
+ rc = SQLITE_CORRUPT_BKPT;
+ goto cleardatabasepage_out;
+ }
+ pPage->bBusy = 1;
hdr = pPage->hdrOffset;
for(i=0; i<pPage->nCell; i++){
pCell = findCell(pPage, i);
}
cleardatabasepage_out:
+ pPage->bBusy = 0;
releasePage(pPage);
return rc;
}
** The schema layer numbers meta values differently. At the schema
** layer (and the SetCookie and ReadCookie opcodes) the number of
** free pages is not visible. So Cookie[0] is the same as Meta[1].
+**
+** This routine treats Meta[BTREE_DATA_VERSION] as a special case. Instead
+** of reading the value out of the header, it instead loads the "DataVersion"
+** from the pager. The BTREE_DATA_VERSION value is not actually stored in the
+** database file. It is a number computed by the pager. But its access
+** pattern is the same as header meta values, and so it is convenient to
+** read it from this routine.
*/
SQLITE_PRIVATE void sqlite3BtreeGetMeta(Btree *p, int idx, u32 *pMeta){
BtShared *pBt = p->pBt;
assert( pBt->pPage1 );
assert( idx>=0 && idx<=15 );
- *pMeta = get4byte(&pBt->pPage1->aData[36 + idx*4]);
+ if( idx==BTREE_DATA_VERSION ){
+ *pMeta = sqlite3PagerDataVersion(pBt->pPager) + p->iDataVersion;
+ }else{
+ *pMeta = get4byte(&pBt->pPage1->aData[36 + idx*4]);
+ }
/* If auto-vacuum is disabled in this build and this is an auto-vacuum
** database, mark the database as read-only. */
if( pCur->iPage==0 ){
/* All pages of the b-tree have been visited. Return successfully. */
*pnEntry = nEntry;
- return SQLITE_OK;
+ return moveToRoot(pCur);
}
moveToParent(pCur);
}while ( pCur->aiIdx[pCur->iPage]>=pCur->apPage[pCur->iPage]->nCell );
assert( contentOffset<=usableSize ); /* Enforced by btreeInitPage() */
memset(hit+contentOffset, 0, usableSize-contentOffset);
memset(hit, 1, contentOffset);
+ /* EVIDENCE-OF: R-37002-32774 The two-byte integer at offset 3 gives the
+ ** number of cells on the page. */
nCell = get2byte(&data[hdr+3]);
+ /* EVIDENCE-OF: R-23882-45353 The cell pointer array of a b-tree page
+ ** immediately follows the b-tree page header. */
cellStart = hdr + 12 - 4*pPage->leaf;
+ /* EVIDENCE-OF: R-02776-14802 The cell pointer array consists of K 2-byte
+ ** integer offsets to the cell contents. */
for(i=0; i<nCell; i++){
int pc = get2byte(&data[cellStart+i*2]);
u32 size = 65536;
for(j=pc+size-1; j>=pc; j--) hit[j]++;
}
}
+ /* EVIDENCE-OF: R-20690-50594 The second field of the b-tree page header
+ ** is the offset of the first freeblock, or zero if there are no
+ ** freeblocks on the page. */
i = get2byte(&data[hdr+1]);
while( i>0 ){
int size, j;
size = get2byte(&data[i+2]);
assert( i+size<=usableSize ); /* Enforced by btreeInitPage() */
for(j=i+size-1; j>=i; j--) hit[j]++;
+ /* EVIDENCE-OF: R-58208-19414 The first 2 bytes of a freeblock are a
+ ** big-endian integer which is the offset in the b-tree page of the next
+ ** freeblock in the chain, or zero if the freeblock is the last on the
+ ** chain. */
j = get2byte(&data[i]);
+ /* EVIDENCE-OF: R-06866-39125 Freeblocks are always connected in order of
+ ** increasing offset. */
assert( j==0 || j>i+size ); /* Enforced by btreeInitPage() */
assert( j<=usableSize-4 ); /* Enforced by btreeInitPage() */
i = j;
break;
}
}
+ /* EVIDENCE-OF: R-43263-13491 The total number of bytes in all fragments
+ ** is stored in the fifth field of the b-tree page header.
+ ** EVIDENCE-OF: R-07161-27322 The one-byte integer at offset 7 gives the
+ ** number of fragmented free bytes within the cell content area.
+ */
if( cnt!=data[hdr+7] ){
checkAppendMsg(pCheck,
"Fragmentation of %d bytes reported as %d on page %d",
}
/*
-** set the mask of hint flags for cursor pCsr. Currently the only valid
-** values are 0 and BTREE_BULKLOAD.
+** set the mask of hint flags for cursor pCsr.
*/
SQLITE_PRIVATE void sqlite3BtreeCursorHints(BtCursor *pCsr, unsigned int mask){
- assert( mask==BTREE_BULKLOAD || mask==0 );
+ assert( mask==BTREE_BULKLOAD || mask==BTREE_SEEK_EQ || mask==0 );
pCsr->hints = mask;
}
+#ifdef SQLITE_DEBUG
+/*
+** Return true if the cursor has a hint specified. This routine is
+** only used from within assert() statements
+*/
+SQLITE_PRIVATE int sqlite3BtreeCursorHasHint(BtCursor *pCsr, unsigned int mask){
+ return (pCsr->hints & mask)!=0;
+}
+#endif
+
/*
** Return true if the given Btree is read-only.
*/
return (p->pBt->btsFlags & BTS_READ_ONLY)!=0;
}
+/*
+** Return the size of the header added to each page by this module.
+*/
+SQLITE_PRIVATE int sqlite3HeaderSizeBtree(void){ return ROUND8(sizeof(MemPage)); }
+
/************** End of btree.c ***********************************************/
/************** Begin file backup.c ******************************************/
/*
return rc;
}
+/*
+** Check that there is no open read-transaction on the b-tree passed as the
+** second argument. If there is not, return SQLITE_OK. Otherwise, if there
+** is an open read-transaction, return SQLITE_ERROR and leave an error
+** message in database handle db.
+*/
+static int checkReadTransaction(sqlite3 *db, Btree *p){
+ if( sqlite3BtreeIsInReadTrans(p) ){
+ sqlite3ErrorWithMsg(db, SQLITE_ERROR, "destination database is in use");
+ return SQLITE_ERROR;
+ }
+ return SQLITE_OK;
+}
+
/*
** Create an sqlite3_backup process to copy the contents of zSrcDb from
** connection handle pSrcDb to zDestDb in pDestDb. If successful, return
** If an error occurs, NULL is returned and an error code and error message
** stored in database handle pDestDb.
*/
-SQLITE_API sqlite3_backup *sqlite3_backup_init(
+SQLITE_API sqlite3_backup *SQLITE_STDCALL sqlite3_backup_init(
sqlite3* pDestDb, /* Database to write to */
const char *zDestDb, /* Name of database within pDestDb */
sqlite3* pSrcDb, /* Database connection to read from */
){
sqlite3_backup *p; /* Value to return */
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(pSrcDb)||!sqlite3SafetyCheckOk(pDestDb) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
+
/* Lock the source database handle. The destination database
** handle is not locked in this routine, but it is locked in
** sqlite3_backup_step(). The user is required to ensure that no
p->iNext = 1;
p->isAttached = 0;
- if( 0==p->pSrc || 0==p->pDest || setDestPgsz(p)==SQLITE_NOMEM ){
+ if( 0==p->pSrc || 0==p->pDest
+ || setDestPgsz(p)==SQLITE_NOMEM
+ || checkReadTransaction(pDestDb, p->pDest)!=SQLITE_OK
+ ){
/* One (or both) of the named databases did not exist or an OOM
- ** error was hit. The error has already been written into the
- ** pDestDb handle. All that is left to do here is free the
- ** sqlite3_backup structure.
- */
+ ** error was hit. Or there is a transaction open on the destination
+ ** database. The error has already been written into the pDestDb
+ ** handle. All that is left to do here is free the sqlite3_backup
+ ** structure. */
sqlite3_free(p);
p = 0;
}
** guaranteed that the shared-mutex is held by this thread, handle
** p->pSrc may not actually be the owner. */
int nSrcReserve = sqlite3BtreeGetReserveNoMutex(p->pSrc);
- int nDestReserve = sqlite3BtreeGetReserve(p->pDest);
+ int nDestReserve = sqlite3BtreeGetOptimalReserve(p->pDest);
#endif
int rc = SQLITE_OK;
i64 iOff;
/*
** Copy nPage pages from the source b-tree to the destination.
*/
-SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){
+SQLITE_API int SQLITE_STDCALL sqlite3_backup_step(sqlite3_backup *p, int nPage){
int rc;
int destMode; /* Destination journal mode */
int pgszSrc = 0; /* Source page size */
int pgszDest = 0; /* Destination page size */
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( p==0 ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(p->pSrcDb->mutex);
sqlite3BtreeEnter(p->pSrc);
if( p->pDestDb ){
/*
** Release all resources associated with an sqlite3_backup* handle.
*/
-SQLITE_API int sqlite3_backup_finish(sqlite3_backup *p){
+SQLITE_API int SQLITE_STDCALL sqlite3_backup_finish(sqlite3_backup *p){
sqlite3_backup **pp; /* Ptr to head of pagers backup list */
sqlite3 *pSrcDb; /* Source database connection */
int rc; /* Value to return */
}
/* If a transaction is still open on the Btree, roll it back. */
- sqlite3BtreeRollback(p->pDest, SQLITE_OK);
+ sqlite3BtreeRollback(p->pDest, SQLITE_OK, 0);
/* Set the error code of the destination database handle. */
rc = (p->rc==SQLITE_DONE) ? SQLITE_OK : p->rc;
** Return the number of pages still to be backed up as of the most recent
** call to sqlite3_backup_step().
*/
-SQLITE_API int sqlite3_backup_remaining(sqlite3_backup *p){
+SQLITE_API int SQLITE_STDCALL sqlite3_backup_remaining(sqlite3_backup *p){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( p==0 ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
return p->nRemaining;
}
** Return the total number of pages in the source database as of the most
** recent call to sqlite3_backup_step().
*/
-SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p){
+SQLITE_API int SQLITE_STDCALL sqlite3_backup_pagecount(sqlite3_backup *p){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( p==0 ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
return p->nPagecount;
}
** Otherwise, if the second argument is non-zero, then this function is
** being called indirectly by sqlite3Stat4ProbeSetValue(). If it has not
** already been allocated, allocate the UnpackedRecord structure that
-** that function will return to its caller here. Then return a pointer
+** that function will return to its caller here. Then return a pointer to
** an sqlite3_value within the UnpackedRecord.a[] array.
*/
static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){
return sqlite3ValueNew(db);
}
+/*
+** The expression object indicated by the second argument is guaranteed
+** to be a scalar SQL function. If
+**
+** * all function arguments are SQL literals,
+** * the SQLITE_FUNC_CONSTANT function flag is set, and
+** * the SQLITE_FUNC_NEEDCOLL function flag is not set,
+**
+** then this routine attempts to invoke the SQL function. Assuming no
+** error occurs, output parameter (*ppVal) is set to point to a value
+** object containing the result before returning SQLITE_OK.
+**
+** Affinity aff is applied to the result of the function before returning.
+** If the result is a text value, the sqlite3_value object uses encoding
+** enc.
+**
+** If the conditions above are not met, this function returns SQLITE_OK
+** and sets (*ppVal) to NULL. Or, if an error occurs, (*ppVal) is set to
+** NULL and an SQLite error code returned.
+*/
+#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
+static int valueFromFunction(
+ sqlite3 *db, /* The database connection */
+ Expr *p, /* The expression to evaluate */
+ u8 enc, /* Encoding to use */
+ u8 aff, /* Affinity to use */
+ sqlite3_value **ppVal, /* Write the new value here */
+ struct ValueNewStat4Ctx *pCtx /* Second argument for valueNew() */
+){
+ sqlite3_context ctx; /* Context object for function invocation */
+ sqlite3_value **apVal = 0; /* Function arguments */
+ int nVal = 0; /* Size of apVal[] array */
+ FuncDef *pFunc = 0; /* Function definition */
+ sqlite3_value *pVal = 0; /* New value */
+ int rc = SQLITE_OK; /* Return code */
+ int nName; /* Size of function name in bytes */
+ ExprList *pList = 0; /* Function arguments */
+ int i; /* Iterator variable */
+
+ assert( pCtx!=0 );
+ assert( (p->flags & EP_TokenOnly)==0 );
+ pList = p->x.pList;
+ if( pList ) nVal = pList->nExpr;
+ nName = sqlite3Strlen30(p->u.zToken);
+ pFunc = sqlite3FindFunction(db, p->u.zToken, nName, nVal, enc, 0);
+ assert( pFunc );
+ if( (pFunc->funcFlags & SQLITE_FUNC_CONSTANT)==0
+ || (pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL)
+ ){
+ return SQLITE_OK;
+ }
+
+ if( pList ){
+ apVal = (sqlite3_value**)sqlite3DbMallocZero(db, sizeof(apVal[0]) * nVal);
+ if( apVal==0 ){
+ rc = SQLITE_NOMEM;
+ goto value_from_function_out;
+ }
+ for(i=0; i<nVal; i++){
+ rc = sqlite3ValueFromExpr(db, pList->a[i].pExpr, enc, aff, &apVal[i]);
+ if( apVal[i]==0 || rc!=SQLITE_OK ) goto value_from_function_out;
+ }
+ }
+
+ pVal = valueNew(db, pCtx);
+ if( pVal==0 ){
+ rc = SQLITE_NOMEM;
+ goto value_from_function_out;
+ }
+
+ assert( pCtx->pParse->rc==SQLITE_OK );
+ memset(&ctx, 0, sizeof(ctx));
+ ctx.pOut = pVal;
+ ctx.pFunc = pFunc;
+ pFunc->xFunc(&ctx, nVal, apVal);
+ if( ctx.isError ){
+ rc = ctx.isError;
+ sqlite3ErrorMsg(pCtx->pParse, "%s", sqlite3_value_text(pVal));
+ }else{
+ sqlite3ValueApplyAffinity(pVal, aff, SQLITE_UTF8);
+ assert( rc==SQLITE_OK );
+ rc = sqlite3VdbeChangeEncoding(pVal, enc);
+ if( rc==SQLITE_OK && sqlite3VdbeMemTooBig(pVal) ){
+ rc = SQLITE_TOOBIG;
+ pCtx->pParse->nErr++;
+ }
+ }
+ pCtx->pParse->rc = rc;
+
+ value_from_function_out:
+ if( rc!=SQLITE_OK ){
+ pVal = 0;
+ }
+ if( apVal ){
+ for(i=0; i<nVal; i++){
+ sqlite3ValueFree(apVal[i]);
+ }
+ sqlite3DbFree(db, apVal);
+ }
+
+ *ppVal = pVal;
+ return rc;
+}
+#else
+# define valueFromFunction(a,b,c,d,e,f) SQLITE_OK
+#endif /* defined(SQLITE_ENABLE_STAT3_OR_STAT4) */
+
/*
** Extract a value from the supplied expression in the manner described
** above sqlite3ValueFromExpr(). Allocate the sqlite3_value object
while( (op = pExpr->op)==TK_UPLUS ) pExpr = pExpr->pLeft;
if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;
+ /* Compressed expressions only appear when parsing the DEFAULT clause
+ ** on a table column definition, and hence only when pCtx==0. This
+ ** check ensures that an EP_TokenOnly expression is never passed down
+ ** into valueFromFunction(). */
+ assert( (pExpr->flags & EP_TokenOnly)==0 || pCtx==0 );
+
if( op==TK_CAST ){
u8 aff = sqlite3AffinityType(pExpr->u.zToken,0);
rc = valueFromExpr(db, pExpr->pLeft, enc, aff, ppVal, pCtx);
}
#endif
+#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
+ else if( op==TK_FUNCTION && pCtx!=0 ){
+ rc = valueFromFunction(db, pExpr, enc, affinity, &pVal, pCtx);
+ }
+#endif
+
*ppVal = pVal;
return rc;
/*
** Return the SQL associated with a prepared statement
*/
-SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt){
+SQLITE_API const char *SQLITE_STDCALL sqlite3_sql(sqlite3_stmt *pStmt){
Vdbe *p = (Vdbe *)pStmt;
return (p && p->isPrepareV2) ? p->zSql : 0;
}
*/
SQLITE_PRIVATE int sqlite3VdbeAssertMayAbort(Vdbe *v, int mayAbort){
int hasAbort = 0;
+ int hasFkCounter = 0;
Op *pOp;
VdbeOpIter sIter;
memset(&sIter, 0, sizeof(sIter));
while( (pOp = opIterNext(&sIter))!=0 ){
int opcode = pOp->opcode;
if( opcode==OP_Destroy || opcode==OP_VUpdate || opcode==OP_VRename
-#ifndef SQLITE_OMIT_FOREIGN_KEY
- || (opcode==OP_FkCounter && pOp->p1==0 && pOp->p2==1)
-#endif
|| ((opcode==OP_Halt || opcode==OP_HaltIfNull)
&& ((pOp->p1&0xff)==SQLITE_CONSTRAINT && pOp->p2==OE_Abort))
){
hasAbort = 1;
break;
}
+#ifndef SQLITE_OMIT_FOREIGN_KEY
+ if( opcode==OP_FkCounter && pOp->p1==0 && pOp->p2==1 ){
+ hasFkCounter = 1;
+ }
+#endif
}
sqlite3DbFree(v->db, sIter.apSub);
** through all opcodes and hasAbort may be set incorrectly. Return
** true for this case to prevent the assert() in the callers frame
** from failing. */
- return ( v->db->mallocFailed || hasAbort==mayAbort );
+ return ( v->db->mallocFailed || hasAbort==mayAbort || hasFkCounter );
}
#endif /* SQLITE_DEBUG - the sqlite3AssertMayAbort() function */
return addr;
}
+#if defined(SQLITE_ENABLE_STMT_SCANSTATUS)
+/*
+** Add an entry to the array of counters managed by sqlite3_stmt_scanstatus().
+*/
+SQLITE_PRIVATE void sqlite3VdbeScanStatus(
+ Vdbe *p, /* VM to add scanstatus() to */
+ int addrExplain, /* Address of OP_Explain (or 0) */
+ int addrLoop, /* Address of loop counter */
+ int addrVisit, /* Address of rows visited counter */
+ LogEst nEst, /* Estimated number of output rows */
+ const char *zName /* Name of table or index being scanned */
+){
+ int nByte = (p->nScan+1) * sizeof(ScanStatus);
+ ScanStatus *aNew;
+ aNew = (ScanStatus*)sqlite3DbRealloc(p->db, p->aScan, nByte);
+ if( aNew ){
+ ScanStatus *pNew = &aNew[p->nScan++];
+ pNew->addrExplain = addrExplain;
+ pNew->addrLoop = addrLoop;
+ pNew->addrVisit = addrVisit;
+ pNew->nEst = nEst;
+ pNew->zName = sqlite3DbStrDup(p->db, zName);
+ p->aScan = aNew;
+ }
+}
+#endif
+
+
/*
** Change the value of the P1 operand for a specific instruction.
** This routine is useful when a large program is loaded from a
#ifndef SQLITE_OMIT_VIRTUALTABLE
case P4_VTAB: {
sqlite3_vtab *pVtab = pOp->p4.pVtab->pVtab;
- sqlite3_snprintf(nTemp, zTemp, "vtab:%p:%p", pVtab, pVtab->pModule);
+ sqlite3_snprintf(nTemp, zTemp, "vtab:%p", pVtab);
break;
}
#endif
p->apCsr = allocSpace(p->apCsr, nCursor*sizeof(VdbeCursor*),
&zCsr, zEnd, &nByte);
p->aOnceFlag = allocSpace(p->aOnceFlag, nOnce, &zCsr, zEnd, &nByte);
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+ p->anExec = allocSpace(p->anExec, p->nOp*sizeof(i64), &zCsr, zEnd, &nByte);
+#endif
if( nByte ){
p->pFree = sqlite3DbMallocZero(db, nByte);
}
p->aVar[n].db = db;
}
}
- if( p->azVar ){
+ if( p->azVar && pParse->nzVar>0 ){
p->nzVar = pParse->nzVar;
memcpy(p->azVar, pParse->azVar, p->nzVar*sizeof(p->azVar[0]));
memset(pParse->azVar, 0, pParse->nzVar*sizeof(pParse->azVar[0]));
else if( pCx->pVtabCursor ){
sqlite3_vtab_cursor *pVtabCursor = pCx->pVtabCursor;
const sqlite3_module *pModule = pVtabCursor->pVtab->pModule;
- p->inVtabMethod = 1;
+ assert( pVtabCursor->pVtab->nRef>0 );
+ pVtabCursor->pVtab->nRef--;
pModule->xClose(pVtabCursor);
- p->inVtabMethod = 0;
}
#endif
}
*/
SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *pFrame){
Vdbe *v = pFrame->v;
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+ v->anExec = pFrame->anExec;
+#endif
v->aOnceFlag = pFrame->aOnceFlag;
v->nOnceFlag = pFrame->nOnceFlag;
v->aOp = pFrame->aOp;
v->nCursor = pFrame->nCursor;
v->db->lastRowid = pFrame->lastRowid;
v->nChange = pFrame->nChange;
+ v->db->nChange = pFrame->nDbChange;
return pFrame->pc;
}
** doing this the directory is synced again before any individual
** transaction files are deleted.
*/
- rc = sqlite3OsDelete(pVfs, zMaster, 1);
+ rc = sqlite3OsDelete(pVfs, zMaster, needSync);
sqlite3DbFree(db, zMaster);
zMaster = 0;
if( rc ){
sqlite3RollbackAll(db, SQLITE_ABORT_ROLLBACK);
sqlite3CloseSavepoints(db);
db->autoCommit = 1;
+ p->nChange = 0;
}
}
}
}else if( rc!=SQLITE_OK ){
p->rc = rc;
sqlite3RollbackAll(db, SQLITE_OK);
+ p->nChange = 0;
}else{
db->nDeferredCons = 0;
db->nDeferredImmCons = 0;
}
}else{
sqlite3RollbackAll(db, SQLITE_OK);
+ p->nChange = 0;
}
db->nStatement = 0;
}else if( eStatementOp==0 ){
sqlite3RollbackAll(db, SQLITE_ABORT_ROLLBACK);
sqlite3CloseSavepoints(db);
db->autoCommit = 1;
+ p->nChange = 0;
}
}
sqlite3RollbackAll(db, SQLITE_ABORT_ROLLBACK);
sqlite3CloseSavepoints(db);
db->autoCommit = 1;
+ p->nChange = 0;
}
}
sqlite3DbFree(db, p->aColName);
sqlite3DbFree(db, p->zSql);
sqlite3DbFree(db, p->pFree);
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+ for(i=0; i<p->nScan; i++){
+ sqlite3DbFree(db, p->aScan[i].zName);
+ }
+ sqlite3DbFree(db, p->aScan);
+#endif
}
/*
i64 i = pMem->u.i;
u64 u;
if( i<0 ){
- if( i<(-MAX_6BYTE) ) return 6;
- /* Previous test prevents: u = -(-9223372036854775808) */
- u = -i;
+ u = ~i;
}else{
u = i;
}
u32 y = FOUR_BYTE_UINT(buf+4);
x = (x<<32) + y;
if( serial_type==6 ){
+ /* EVIDENCE-OF: R-29851-52272 Value is a big-endian 64-bit
+ ** twos-complement integer. */
pMem->u.i = *(i64*)&x;
pMem->flags = MEM_Int;
testcase( pMem->u.i<0 );
}else{
+ /* EVIDENCE-OF: R-57343-49114 Value is a big-endian IEEE 754-2008 64-bit
+ ** floating point number. */
#if !defined(NDEBUG) && !defined(SQLITE_OMIT_FLOATING_POINT)
/* Verify that integers and floating point values use the same
** byte order. Or, that if SQLITE_MIXED_ENDIAN_64BIT_FLOAT is
switch( serial_type ){
case 10: /* Reserved for future use */
case 11: /* Reserved for future use */
- case 0: { /* NULL */
+ case 0: { /* Null */
+ /* EVIDENCE-OF: R-24078-09375 Value is a NULL. */
pMem->flags = MEM_Null;
break;
}
- case 1: { /* 1-byte signed integer */
+ case 1: {
+ /* EVIDENCE-OF: R-44885-25196 Value is an 8-bit twos-complement
+ ** integer. */
pMem->u.i = ONE_BYTE_INT(buf);
pMem->flags = MEM_Int;
testcase( pMem->u.i<0 );
return 1;
}
case 2: { /* 2-byte signed integer */
+ /* EVIDENCE-OF: R-49794-35026 Value is a big-endian 16-bit
+ ** twos-complement integer. */
pMem->u.i = TWO_BYTE_INT(buf);
pMem->flags = MEM_Int;
testcase( pMem->u.i<0 );
return 2;
}
case 3: { /* 3-byte signed integer */
+ /* EVIDENCE-OF: R-37839-54301 Value is a big-endian 24-bit
+ ** twos-complement integer. */
pMem->u.i = THREE_BYTE_INT(buf);
pMem->flags = MEM_Int;
testcase( pMem->u.i<0 );
return 3;
}
case 4: { /* 4-byte signed integer */
+ /* EVIDENCE-OF: R-01849-26079 Value is a big-endian 32-bit
+ ** twos-complement integer. */
pMem->u.i = FOUR_BYTE_INT(buf);
pMem->flags = MEM_Int;
testcase( pMem->u.i<0 );
return 4;
}
case 5: { /* 6-byte signed integer */
+ /* EVIDENCE-OF: R-50385-09674 Value is a big-endian 48-bit
+ ** twos-complement integer. */
pMem->u.i = FOUR_BYTE_UINT(buf+2) + (((i64)1)<<32)*TWO_BYTE_INT(buf);
pMem->flags = MEM_Int;
testcase( pMem->u.i<0 );
}
case 8: /* Integer 0 */
case 9: { /* Integer 1 */
+ /* EVIDENCE-OF: R-12976-22893 Value is the integer 0. */
+ /* EVIDENCE-OF: R-18143-12121 Value is the integer 1. */
pMem->u.i = serial_type-8;
pMem->flags = MEM_Int;
return 0;
}
default: {
+ /* EVIDENCE-OF: R-14606-31564 Value is a BLOB that is (N-12)/2 bytes in
+ ** length.
+ ** EVIDENCE-OF: R-28401-00140 Value is a string in the text encoding and
+ ** (N-13)/2 bytes in length. */
static const u16 aFlag[] = { MEM_Blob|MEM_Ephem, MEM_Str|MEM_Ephem };
pMem->z = (char *)buf;
pMem->n = (serial_type-12)/2;
}
#endif
+#if SQLITE_DEBUG
+/*
+** Count the number of fields (a.k.a. columns) in the record given by
+** pKey,nKey. The verify that this count is less than or equal to the
+** limit given by pKeyInfo->nField + pKeyInfo->nXField.
+**
+** If this constraint is not satisfied, it means that the high-speed
+** vdbeRecordCompareInt() and vdbeRecordCompareString() routines will
+** not work correctly. If this assert() ever fires, it probably means
+** that the KeyInfo.nField or KeyInfo.nXField values were computed
+** incorrectly.
+*/
+static void vdbeAssertFieldCountWithinLimits(
+ int nKey, const void *pKey, /* The record to verify */
+ const KeyInfo *pKeyInfo /* Compare size with this KeyInfo */
+){
+ int nField = 0;
+ u32 szHdr;
+ u32 idx;
+ u32 notUsed;
+ const unsigned char *aKey = (const unsigned char*)pKey;
+
+ if( CORRUPT_DB ) return;
+ idx = getVarint32(aKey, szHdr);
+ assert( nKey>=0 );
+ assert( szHdr<=(u32)nKey );
+ while( idx<szHdr ){
+ idx += getVarint32(aKey+idx, notUsed);
+ nField++;
+ }
+ assert( nField <= pKeyInfo->nField+pKeyInfo->nXField );
+}
+#else
+# define vdbeAssertFieldCountWithinLimits(A,B,C)
+#endif
+
/*
** Both *pMem1 and *pMem2 contain string values. Compare the two values
** using the collation sequence pColl. As usual, return a negative , zero
i64 v = pPKey2->aMem[0].u.i;
i64 lhs;
+ vdbeAssertFieldCountWithinLimits(nKey1, pKey1, pPKey2->pKeyInfo);
assert( (*(u8*)pKey1)<=0x3F || CORRUPT_DB );
switch( serial_type ){
case 1: { /* 1-byte signed integer */
int serial_type;
int res;
+ vdbeAssertFieldCountWithinLimits(nKey1, pKey1, pPKey2->pKeyInfo);
getVarint32(&aKey1[1], serial_type);
if( serial_type<12 ){
res = pPKey2->r1; /* (pKey1/nKey1) is a number or a null */
** collating sequences are registered or if an authorizer function is
** added or changed.
*/
-SQLITE_API int sqlite3_expired(sqlite3_stmt *pStmt){
+SQLITE_API int SQLITE_STDCALL sqlite3_expired(sqlite3_stmt *pStmt){
Vdbe *p = (Vdbe*)pStmt;
return p==0 || p->expired;
}
** This routine sets the error code and string returned by
** sqlite3_errcode(), sqlite3_errmsg() and sqlite3_errmsg16().
*/
-SQLITE_API int sqlite3_finalize(sqlite3_stmt *pStmt){
+SQLITE_API int SQLITE_STDCALL sqlite3_finalize(sqlite3_stmt *pStmt){
int rc;
if( pStmt==0 ){
/* IMPLEMENTATION-OF: R-57228-12904 Invoking sqlite3_finalize() on a NULL
** This routine sets the error code and string returned by
** sqlite3_errcode(), sqlite3_errmsg() and sqlite3_errmsg16().
*/
-SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt){
+SQLITE_API int SQLITE_STDCALL sqlite3_reset(sqlite3_stmt *pStmt){
int rc;
if( pStmt==0 ){
rc = SQLITE_OK;
/*
** Set all the parameters in the compiled SQL statement to NULL.
*/
-SQLITE_API int sqlite3_clear_bindings(sqlite3_stmt *pStmt){
+SQLITE_API int SQLITE_STDCALL sqlite3_clear_bindings(sqlite3_stmt *pStmt){
int i;
int rc = SQLITE_OK;
Vdbe *p = (Vdbe*)pStmt;
** The following routines extract information from a Mem or sqlite3_value
** structure.
*/
-SQLITE_API const void *sqlite3_value_blob(sqlite3_value *pVal){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_value_blob(sqlite3_value *pVal){
Mem *p = (Mem*)pVal;
if( p->flags & (MEM_Blob|MEM_Str) ){
sqlite3VdbeMemExpandBlob(p);
return sqlite3_value_text(pVal);
}
}
-SQLITE_API int sqlite3_value_bytes(sqlite3_value *pVal){
+SQLITE_API int SQLITE_STDCALL sqlite3_value_bytes(sqlite3_value *pVal){
return sqlite3ValueBytes(pVal, SQLITE_UTF8);
}
-SQLITE_API int sqlite3_value_bytes16(sqlite3_value *pVal){
+SQLITE_API int SQLITE_STDCALL sqlite3_value_bytes16(sqlite3_value *pVal){
return sqlite3ValueBytes(pVal, SQLITE_UTF16NATIVE);
}
-SQLITE_API double sqlite3_value_double(sqlite3_value *pVal){
+SQLITE_API double SQLITE_STDCALL sqlite3_value_double(sqlite3_value *pVal){
return sqlite3VdbeRealValue((Mem*)pVal);
}
-SQLITE_API int sqlite3_value_int(sqlite3_value *pVal){
+SQLITE_API int SQLITE_STDCALL sqlite3_value_int(sqlite3_value *pVal){
return (int)sqlite3VdbeIntValue((Mem*)pVal);
}
-SQLITE_API sqlite_int64 sqlite3_value_int64(sqlite3_value *pVal){
+SQLITE_API sqlite_int64 SQLITE_STDCALL sqlite3_value_int64(sqlite3_value *pVal){
return sqlite3VdbeIntValue((Mem*)pVal);
}
-SQLITE_API const unsigned char *sqlite3_value_text(sqlite3_value *pVal){
+SQLITE_API const unsigned char *SQLITE_STDCALL sqlite3_value_text(sqlite3_value *pVal){
return (const unsigned char *)sqlite3ValueText(pVal, SQLITE_UTF8);
}
#ifndef SQLITE_OMIT_UTF16
-SQLITE_API const void *sqlite3_value_text16(sqlite3_value* pVal){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_value_text16(sqlite3_value* pVal){
return sqlite3ValueText(pVal, SQLITE_UTF16NATIVE);
}
-SQLITE_API const void *sqlite3_value_text16be(sqlite3_value *pVal){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_value_text16be(sqlite3_value *pVal){
return sqlite3ValueText(pVal, SQLITE_UTF16BE);
}
-SQLITE_API const void *sqlite3_value_text16le(sqlite3_value *pVal){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_value_text16le(sqlite3_value *pVal){
return sqlite3ValueText(pVal, SQLITE_UTF16LE);
}
#endif /* SQLITE_OMIT_UTF16 */
-SQLITE_API int sqlite3_value_type(sqlite3_value* pVal){
+/* EVIDENCE-OF: R-12793-43283 Every value in SQLite has one of five
+** fundamental datatypes: 64-bit signed integer 64-bit IEEE floating
+** point number string BLOB NULL
+*/
+SQLITE_API int SQLITE_STDCALL sqlite3_value_type(sqlite3_value* pVal){
static const u8 aType[] = {
SQLITE_BLOB, /* 0x00 */
SQLITE_NULL, /* 0x01 */
if( pCtx ) sqlite3_result_error_toobig(pCtx);
return SQLITE_TOOBIG;
}
-SQLITE_API void sqlite3_result_blob(
+SQLITE_API void SQLITE_STDCALL sqlite3_result_blob(
sqlite3_context *pCtx,
const void *z,
int n,
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
setResultStrOrError(pCtx, z, n, 0, xDel);
}
-SQLITE_API void sqlite3_result_blob64(
+SQLITE_API void SQLITE_STDCALL sqlite3_result_blob64(
sqlite3_context *pCtx,
const void *z,
sqlite3_uint64 n,
setResultStrOrError(pCtx, z, (int)n, 0, xDel);
}
}
-SQLITE_API void sqlite3_result_double(sqlite3_context *pCtx, double rVal){
+SQLITE_API void SQLITE_STDCALL sqlite3_result_double(sqlite3_context *pCtx, double rVal){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
sqlite3VdbeMemSetDouble(pCtx->pOut, rVal);
}
-SQLITE_API void sqlite3_result_error(sqlite3_context *pCtx, const char *z, int n){
+SQLITE_API void SQLITE_STDCALL sqlite3_result_error(sqlite3_context *pCtx, const char *z, int n){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
pCtx->isError = SQLITE_ERROR;
pCtx->fErrorOrAux = 1;
sqlite3VdbeMemSetStr(pCtx->pOut, z, n, SQLITE_UTF8, SQLITE_TRANSIENT);
}
#ifndef SQLITE_OMIT_UTF16
-SQLITE_API void sqlite3_result_error16(sqlite3_context *pCtx, const void *z, int n){
+SQLITE_API void SQLITE_STDCALL sqlite3_result_error16(sqlite3_context *pCtx, const void *z, int n){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
pCtx->isError = SQLITE_ERROR;
pCtx->fErrorOrAux = 1;
sqlite3VdbeMemSetStr(pCtx->pOut, z, n, SQLITE_UTF16NATIVE, SQLITE_TRANSIENT);
}
#endif
-SQLITE_API void sqlite3_result_int(sqlite3_context *pCtx, int iVal){
+SQLITE_API void SQLITE_STDCALL sqlite3_result_int(sqlite3_context *pCtx, int iVal){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
sqlite3VdbeMemSetInt64(pCtx->pOut, (i64)iVal);
}
-SQLITE_API void sqlite3_result_int64(sqlite3_context *pCtx, i64 iVal){
+SQLITE_API void SQLITE_STDCALL sqlite3_result_int64(sqlite3_context *pCtx, i64 iVal){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
sqlite3VdbeMemSetInt64(pCtx->pOut, iVal);
}
-SQLITE_API void sqlite3_result_null(sqlite3_context *pCtx){
+SQLITE_API void SQLITE_STDCALL sqlite3_result_null(sqlite3_context *pCtx){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
sqlite3VdbeMemSetNull(pCtx->pOut);
}
-SQLITE_API void sqlite3_result_text(
+SQLITE_API void SQLITE_STDCALL sqlite3_result_text(
sqlite3_context *pCtx,
const char *z,
int n,
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
setResultStrOrError(pCtx, z, n, SQLITE_UTF8, xDel);
}
-SQLITE_API void sqlite3_result_text64(
+SQLITE_API void SQLITE_STDCALL sqlite3_result_text64(
sqlite3_context *pCtx,
const char *z,
sqlite3_uint64 n,
}
}
#ifndef SQLITE_OMIT_UTF16
-SQLITE_API void sqlite3_result_text16(
+SQLITE_API void SQLITE_STDCALL sqlite3_result_text16(
sqlite3_context *pCtx,
const void *z,
int n,
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
setResultStrOrError(pCtx, z, n, SQLITE_UTF16NATIVE, xDel);
}
-SQLITE_API void sqlite3_result_text16be(
+SQLITE_API void SQLITE_STDCALL sqlite3_result_text16be(
sqlite3_context *pCtx,
const void *z,
int n,
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
setResultStrOrError(pCtx, z, n, SQLITE_UTF16BE, xDel);
}
-SQLITE_API void sqlite3_result_text16le(
+SQLITE_API void SQLITE_STDCALL sqlite3_result_text16le(
sqlite3_context *pCtx,
const void *z,
int n,
setResultStrOrError(pCtx, z, n, SQLITE_UTF16LE, xDel);
}
#endif /* SQLITE_OMIT_UTF16 */
-SQLITE_API void sqlite3_result_value(sqlite3_context *pCtx, sqlite3_value *pValue){
+SQLITE_API void SQLITE_STDCALL sqlite3_result_value(sqlite3_context *pCtx, sqlite3_value *pValue){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
sqlite3VdbeMemCopy(pCtx->pOut, pValue);
}
-SQLITE_API void sqlite3_result_zeroblob(sqlite3_context *pCtx, int n){
+SQLITE_API void SQLITE_STDCALL sqlite3_result_zeroblob(sqlite3_context *pCtx, int n){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
sqlite3VdbeMemSetZeroBlob(pCtx->pOut, n);
}
-SQLITE_API void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){
+SQLITE_API void SQLITE_STDCALL sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){
pCtx->isError = errCode;
pCtx->fErrorOrAux = 1;
+#ifdef SQLITE_DEBUG
+ if( pCtx->pVdbe ) pCtx->pVdbe->rcApp = errCode;
+#endif
if( pCtx->pOut->flags & MEM_Null ){
sqlite3VdbeMemSetStr(pCtx->pOut, sqlite3ErrStr(errCode), -1,
SQLITE_UTF8, SQLITE_STATIC);
}
/* Force an SQLITE_TOOBIG error. */
-SQLITE_API void sqlite3_result_error_toobig(sqlite3_context *pCtx){
+SQLITE_API void SQLITE_STDCALL sqlite3_result_error_toobig(sqlite3_context *pCtx){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
pCtx->isError = SQLITE_TOOBIG;
pCtx->fErrorOrAux = 1;
}
/* An SQLITE_NOMEM error. */
-SQLITE_API void sqlite3_result_error_nomem(sqlite3_context *pCtx){
+SQLITE_API void SQLITE_STDCALL sqlite3_result_error_nomem(sqlite3_context *pCtx){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
sqlite3VdbeMemSetNull(pCtx->pOut);
pCtx->isError = SQLITE_NOMEM;
for(i=0; i<db->nDb; i++){
Btree *pBt = db->aDb[i].pBt;
if( pBt ){
- int nEntry = sqlite3PagerWalCallback(sqlite3BtreePager(pBt));
+ int nEntry;
+ sqlite3BtreeEnter(pBt);
+ nEntry = sqlite3PagerWalCallback(sqlite3BtreePager(pBt));
+ sqlite3BtreeLeave(pBt);
if( db->xWalCallback && nEntry>0 && rc==SQLITE_OK ){
rc = db->xWalCallback(db->pWalArg, db, db->aDb[i].zName, nEntry);
}
** or SQLITE_BUSY error.
*/
#ifdef SQLITE_OMIT_AUTORESET
- if( p->rc==SQLITE_BUSY || p->rc==SQLITE_LOCKED ){
+ if( (rc = p->rc&0xff)==SQLITE_BUSY || rc==SQLITE_LOCKED ){
sqlite3_reset((sqlite3_stmt*)p);
}else{
return SQLITE_MISUSE_BKPT;
if( p->bIsReader ) db->nVdbeRead++;
p->pc = 0;
}
+#ifdef SQLITE_DEBUG
+ p->rcApp = SQLITE_OK;
+#endif
#ifndef SQLITE_OMIT_EXPLAIN
if( p->explain ){
rc = sqlite3VdbeList(p);
assert( rc==SQLITE_ROW || rc==SQLITE_DONE || rc==SQLITE_ERROR
|| rc==SQLITE_BUSY || rc==SQLITE_MISUSE
);
- assert( p->rc!=SQLITE_ROW && p->rc!=SQLITE_DONE );
+ assert( (p->rc!=SQLITE_ROW && p->rc!=SQLITE_DONE) || p->rc==p->rcApp );
if( p->isPrepareV2 && rc!=SQLITE_ROW && rc!=SQLITE_DONE ){
/* If this statement was prepared using sqlite3_prepare_v2(), and an
** error has occurred, then return the error code in p->rc to the
** sqlite3Step() to do most of the work. If a schema error occurs,
** call sqlite3Reprepare() and try again.
*/
-SQLITE_API int sqlite3_step(sqlite3_stmt *pStmt){
+SQLITE_API int SQLITE_STDCALL sqlite3_step(sqlite3_stmt *pStmt){
int rc = SQLITE_OK; /* Result from sqlite3Step() */
int rc2 = SQLITE_OK; /* Result from sqlite3Reprepare() */
Vdbe *v = (Vdbe*)pStmt; /* the prepared statement */
** sqlite3_errmsg() and sqlite3_errcode().
*/
const char *zErr = (const char *)sqlite3_value_text(db->pErr);
- assert( zErr!=0 || db->mallocFailed );
sqlite3DbFree(db, v->zErrMsg);
if( !db->mallocFailed ){
v->zErrMsg = sqlite3DbStrDup(db, zErr);
** Extract the user data from a sqlite3_context structure and return a
** pointer to it.
*/
-SQLITE_API void *sqlite3_user_data(sqlite3_context *p){
+SQLITE_API void *SQLITE_STDCALL sqlite3_user_data(sqlite3_context *p){
assert( p && p->pFunc );
return p->pFunc->pUserData;
}
** sqlite3_create_function16() routines that originally registered the
** application defined function.
*/
-SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context *p){
+SQLITE_API sqlite3 *SQLITE_STDCALL sqlite3_context_db_handle(sqlite3_context *p){
assert( p && p->pFunc );
return p->pOut->db;
}
/*
-** Return the current time for a statement
+** Return the current time for a statement. If the current time
+** is requested more than once within the same run of a single prepared
+** statement, the exact same time is returned for each invocation regardless
+** of the amount of time that elapses between invocations. In other words,
+** the time returned is always the time of the first call.
*/
SQLITE_PRIVATE sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context *p){
- Vdbe *v = p->pVdbe;
int rc;
- if( v->iCurrentTime==0 ){
- rc = sqlite3OsCurrentTimeInt64(p->pOut->db->pVfs, &v->iCurrentTime);
- if( rc ) v->iCurrentTime = 0;
+#ifndef SQLITE_ENABLE_STAT3_OR_STAT4
+ sqlite3_int64 *piTime = &p->pVdbe->iCurrentTime;
+ assert( p->pVdbe!=0 );
+#else
+ sqlite3_int64 iTime = 0;
+ sqlite3_int64 *piTime = p->pVdbe!=0 ? &p->pVdbe->iCurrentTime : &iTime;
+#endif
+ if( *piTime==0 ){
+ rc = sqlite3OsCurrentTimeInt64(p->pOut->db->pVfs, piTime);
+ if( rc ) *piTime = 0;
}
- return v->iCurrentTime;
+ return *piTime;
}
/*
** context is allocated on the first call. Subsequent calls return the
** same context that was returned on prior calls.
*/
-SQLITE_API void *sqlite3_aggregate_context(sqlite3_context *p, int nByte){
+SQLITE_API void *SQLITE_STDCALL sqlite3_aggregate_context(sqlite3_context *p, int nByte){
assert( p && p->pFunc && p->pFunc->xStep );
assert( sqlite3_mutex_held(p->pOut->db->mutex) );
testcase( nByte<0 );
** Return the auxiliary data pointer, if any, for the iArg'th argument to
** the user-function defined by pCtx.
*/
-SQLITE_API void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){
+SQLITE_API void *SQLITE_STDCALL sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){
AuxData *pAuxData;
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
+#if SQLITE_ENABLE_STAT3_OR_STAT4
+ if( pCtx->pVdbe==0 ) return 0;
+#else
+ assert( pCtx->pVdbe!=0 );
+#endif
for(pAuxData=pCtx->pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){
if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break;
}
** argument to the user-function defined by pCtx. Any previous value is
** deleted by calling the delete function specified when it was set.
*/
-SQLITE_API void sqlite3_set_auxdata(
+SQLITE_API void SQLITE_STDCALL sqlite3_set_auxdata(
sqlite3_context *pCtx,
int iArg,
void *pAux,
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
if( iArg<0 ) goto failed;
+#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
+ if( pVdbe==0 ) goto failed;
+#else
+ assert( pVdbe!=0 );
+#endif
for(pAuxData=pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){
if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break;
** implementations should keep their own counts within their aggregate
** context.
*/
-SQLITE_API int sqlite3_aggregate_count(sqlite3_context *p){
+SQLITE_API int SQLITE_STDCALL sqlite3_aggregate_count(sqlite3_context *p){
assert( p && p->pMem && p->pFunc && p->pFunc->xStep );
return p->pMem->n;
}
/*
** Return the number of columns in the result set for the statement pStmt.
*/
-SQLITE_API int sqlite3_column_count(sqlite3_stmt *pStmt){
+SQLITE_API int SQLITE_STDCALL sqlite3_column_count(sqlite3_stmt *pStmt){
Vdbe *pVm = (Vdbe *)pStmt;
return pVm ? pVm->nResColumn : 0;
}
** Return the number of values available from the current row of the
** currently executing statement pStmt.
*/
-SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt){
+SQLITE_API int SQLITE_STDCALL sqlite3_data_count(sqlite3_stmt *pStmt){
Vdbe *pVm = (Vdbe *)pStmt;
if( pVm==0 || pVm->pResultSet==0 ) return 0;
return pVm->nResColumn;
** The following routines are used to access elements of the current row
** in the result set.
*/
-SQLITE_API const void *sqlite3_column_blob(sqlite3_stmt *pStmt, int i){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_blob(sqlite3_stmt *pStmt, int i){
const void *val;
val = sqlite3_value_blob( columnMem(pStmt,i) );
/* Even though there is no encoding conversion, value_blob() might
columnMallocFailure(pStmt);
return val;
}
-SQLITE_API int sqlite3_column_bytes(sqlite3_stmt *pStmt, int i){
+SQLITE_API int SQLITE_STDCALL sqlite3_column_bytes(sqlite3_stmt *pStmt, int i){
int val = sqlite3_value_bytes( columnMem(pStmt,i) );
columnMallocFailure(pStmt);
return val;
}
-SQLITE_API int sqlite3_column_bytes16(sqlite3_stmt *pStmt, int i){
+SQLITE_API int SQLITE_STDCALL sqlite3_column_bytes16(sqlite3_stmt *pStmt, int i){
int val = sqlite3_value_bytes16( columnMem(pStmt,i) );
columnMallocFailure(pStmt);
return val;
}
-SQLITE_API double sqlite3_column_double(sqlite3_stmt *pStmt, int i){
+SQLITE_API double SQLITE_STDCALL sqlite3_column_double(sqlite3_stmt *pStmt, int i){
double val = sqlite3_value_double( columnMem(pStmt,i) );
columnMallocFailure(pStmt);
return val;
}
-SQLITE_API int sqlite3_column_int(sqlite3_stmt *pStmt, int i){
+SQLITE_API int SQLITE_STDCALL sqlite3_column_int(sqlite3_stmt *pStmt, int i){
int val = sqlite3_value_int( columnMem(pStmt,i) );
columnMallocFailure(pStmt);
return val;
}
-SQLITE_API sqlite_int64 sqlite3_column_int64(sqlite3_stmt *pStmt, int i){
+SQLITE_API sqlite_int64 SQLITE_STDCALL sqlite3_column_int64(sqlite3_stmt *pStmt, int i){
sqlite_int64 val = sqlite3_value_int64( columnMem(pStmt,i) );
columnMallocFailure(pStmt);
return val;
}
-SQLITE_API const unsigned char *sqlite3_column_text(sqlite3_stmt *pStmt, int i){
+SQLITE_API const unsigned char *SQLITE_STDCALL sqlite3_column_text(sqlite3_stmt *pStmt, int i){
const unsigned char *val = sqlite3_value_text( columnMem(pStmt,i) );
columnMallocFailure(pStmt);
return val;
}
-SQLITE_API sqlite3_value *sqlite3_column_value(sqlite3_stmt *pStmt, int i){
+SQLITE_API sqlite3_value *SQLITE_STDCALL sqlite3_column_value(sqlite3_stmt *pStmt, int i){
Mem *pOut = columnMem(pStmt, i);
if( pOut->flags&MEM_Static ){
pOut->flags &= ~MEM_Static;
return (sqlite3_value *)pOut;
}
#ifndef SQLITE_OMIT_UTF16
-SQLITE_API const void *sqlite3_column_text16(sqlite3_stmt *pStmt, int i){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_text16(sqlite3_stmt *pStmt, int i){
const void *val = sqlite3_value_text16( columnMem(pStmt,i) );
columnMallocFailure(pStmt);
return val;
}
#endif /* SQLITE_OMIT_UTF16 */
-SQLITE_API int sqlite3_column_type(sqlite3_stmt *pStmt, int i){
+SQLITE_API int SQLITE_STDCALL sqlite3_column_type(sqlite3_stmt *pStmt, int i){
int iType = sqlite3_value_type( columnMem(pStmt,i) );
columnMallocFailure(pStmt);
return iType;
const void *(*xFunc)(Mem*),
int useType
){
- const void *ret = 0;
- Vdbe *p = (Vdbe *)pStmt;
+ const void *ret;
+ Vdbe *p;
int n;
- sqlite3 *db = p->db;
-
+ sqlite3 *db;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( pStmt==0 ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
+ ret = 0;
+ p = (Vdbe *)pStmt;
+ db = p->db;
assert( db!=0 );
n = sqlite3_column_count(pStmt);
if( N<n && N>=0 ){
** Return the name of the Nth column of the result set returned by SQL
** statement pStmt.
*/
-SQLITE_API const char *sqlite3_column_name(sqlite3_stmt *pStmt, int N){
+SQLITE_API const char *SQLITE_STDCALL sqlite3_column_name(sqlite3_stmt *pStmt, int N){
return columnName(
pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, COLNAME_NAME);
}
#ifndef SQLITE_OMIT_UTF16
-SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt *pStmt, int N){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_name16(sqlite3_stmt *pStmt, int N){
return columnName(
pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, COLNAME_NAME);
}
** Return the column declaration type (if applicable) of the 'i'th column
** of the result set of SQL statement pStmt.
*/
-SQLITE_API const char *sqlite3_column_decltype(sqlite3_stmt *pStmt, int N){
+SQLITE_API const char *SQLITE_STDCALL sqlite3_column_decltype(sqlite3_stmt *pStmt, int N){
return columnName(
pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, COLNAME_DECLTYPE);
}
#ifndef SQLITE_OMIT_UTF16
-SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt *pStmt, int N){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_decltype16(sqlite3_stmt *pStmt, int N){
return columnName(
pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, COLNAME_DECLTYPE);
}
** NULL is returned if the result column is an expression or constant or
** anything else which is not an unambiguous reference to a database column.
*/
-SQLITE_API const char *sqlite3_column_database_name(sqlite3_stmt *pStmt, int N){
+SQLITE_API const char *SQLITE_STDCALL sqlite3_column_database_name(sqlite3_stmt *pStmt, int N){
return columnName(
pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, COLNAME_DATABASE);
}
#ifndef SQLITE_OMIT_UTF16
-SQLITE_API const void *sqlite3_column_database_name16(sqlite3_stmt *pStmt, int N){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_database_name16(sqlite3_stmt *pStmt, int N){
return columnName(
pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, COLNAME_DATABASE);
}
** NULL is returned if the result column is an expression or constant or
** anything else which is not an unambiguous reference to a database column.
*/
-SQLITE_API const char *sqlite3_column_table_name(sqlite3_stmt *pStmt, int N){
+SQLITE_API const char *SQLITE_STDCALL sqlite3_column_table_name(sqlite3_stmt *pStmt, int N){
return columnName(
pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, COLNAME_TABLE);
}
#ifndef SQLITE_OMIT_UTF16
-SQLITE_API const void *sqlite3_column_table_name16(sqlite3_stmt *pStmt, int N){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_table_name16(sqlite3_stmt *pStmt, int N){
return columnName(
pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, COLNAME_TABLE);
}
** NULL is returned if the result column is an expression or constant or
** anything else which is not an unambiguous reference to a database column.
*/
-SQLITE_API const char *sqlite3_column_origin_name(sqlite3_stmt *pStmt, int N){
+SQLITE_API const char *SQLITE_STDCALL sqlite3_column_origin_name(sqlite3_stmt *pStmt, int N){
return columnName(
pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, COLNAME_COLUMN);
}
#ifndef SQLITE_OMIT_UTF16
-SQLITE_API const void *sqlite3_column_origin_name16(sqlite3_stmt *pStmt, int N){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_column_origin_name16(sqlite3_stmt *pStmt, int N){
return columnName(
pStmt, N, (const void*(*)(Mem*))sqlite3_value_text16, COLNAME_COLUMN);
}
/*
** Bind a blob value to an SQL statement variable.
*/
-SQLITE_API int sqlite3_bind_blob(
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_blob(
sqlite3_stmt *pStmt,
int i,
const void *zData,
){
return bindText(pStmt, i, zData, nData, xDel, 0);
}
-SQLITE_API int sqlite3_bind_blob64(
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_blob64(
sqlite3_stmt *pStmt,
int i,
const void *zData,
return bindText(pStmt, i, zData, (int)nData, xDel, 0);
}
}
-SQLITE_API int sqlite3_bind_double(sqlite3_stmt *pStmt, int i, double rValue){
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_double(sqlite3_stmt *pStmt, int i, double rValue){
int rc;
Vdbe *p = (Vdbe *)pStmt;
rc = vdbeUnbind(p, i);
}
return rc;
}
-SQLITE_API int sqlite3_bind_int(sqlite3_stmt *p, int i, int iValue){
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_int(sqlite3_stmt *p, int i, int iValue){
return sqlite3_bind_int64(p, i, (i64)iValue);
}
-SQLITE_API int sqlite3_bind_int64(sqlite3_stmt *pStmt, int i, sqlite_int64 iValue){
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_int64(sqlite3_stmt *pStmt, int i, sqlite_int64 iValue){
int rc;
Vdbe *p = (Vdbe *)pStmt;
rc = vdbeUnbind(p, i);
}
return rc;
}
-SQLITE_API int sqlite3_bind_null(sqlite3_stmt *pStmt, int i){
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_null(sqlite3_stmt *pStmt, int i){
int rc;
Vdbe *p = (Vdbe*)pStmt;
rc = vdbeUnbind(p, i);
}
return rc;
}
-SQLITE_API int sqlite3_bind_text(
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_text(
sqlite3_stmt *pStmt,
int i,
const char *zData,
){
return bindText(pStmt, i, zData, nData, xDel, SQLITE_UTF8);
}
-SQLITE_API int sqlite3_bind_text64(
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_text64(
sqlite3_stmt *pStmt,
int i,
const char *zData,
}
}
#ifndef SQLITE_OMIT_UTF16
-SQLITE_API int sqlite3_bind_text16(
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_text16(
sqlite3_stmt *pStmt,
int i,
const void *zData,
return bindText(pStmt, i, zData, nData, xDel, SQLITE_UTF16NATIVE);
}
#endif /* SQLITE_OMIT_UTF16 */
-SQLITE_API int sqlite3_bind_value(sqlite3_stmt *pStmt, int i, const sqlite3_value *pValue){
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_value(sqlite3_stmt *pStmt, int i, const sqlite3_value *pValue){
int rc;
switch( sqlite3_value_type((sqlite3_value*)pValue) ){
case SQLITE_INTEGER: {
}
return rc;
}
-SQLITE_API int sqlite3_bind_zeroblob(sqlite3_stmt *pStmt, int i, int n){
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_zeroblob(sqlite3_stmt *pStmt, int i, int n){
int rc;
Vdbe *p = (Vdbe *)pStmt;
rc = vdbeUnbind(p, i);
** Return the number of wildcards that can be potentially bound to.
** This routine is added to support DBD::SQLite.
*/
-SQLITE_API int sqlite3_bind_parameter_count(sqlite3_stmt *pStmt){
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_parameter_count(sqlite3_stmt *pStmt){
Vdbe *p = (Vdbe*)pStmt;
return p ? p->nVar : 0;
}
**
** The result is always UTF-8.
*/
-SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt *pStmt, int i){
+SQLITE_API const char *SQLITE_STDCALL sqlite3_bind_parameter_name(sqlite3_stmt *pStmt, int i){
Vdbe *p = (Vdbe*)pStmt;
if( p==0 || i<1 || i>p->nzVar ){
return 0;
}
return 0;
}
-SQLITE_API int sqlite3_bind_parameter_index(sqlite3_stmt *pStmt, const char *zName){
+SQLITE_API int SQLITE_STDCALL sqlite3_bind_parameter_index(sqlite3_stmt *pStmt, const char *zName){
return sqlite3VdbeParameterIndex((Vdbe*)pStmt, zName, sqlite3Strlen30(zName));
}
** an SQLITE_ERROR is returned. Nothing else can go wrong, so otherwise
** SQLITE_OK is returned.
*/
-SQLITE_API int sqlite3_transfer_bindings(sqlite3_stmt *pFromStmt, sqlite3_stmt *pToStmt){
+SQLITE_API int SQLITE_STDCALL sqlite3_transfer_bindings(sqlite3_stmt *pFromStmt, sqlite3_stmt *pToStmt){
Vdbe *pFrom = (Vdbe*)pFromStmt;
Vdbe *pTo = (Vdbe*)pToStmt;
if( pFrom->nVar!=pTo->nVar ){
** the first argument to the sqlite3_prepare() that was used to create
** the statement in the first place.
*/
-SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt *pStmt){
+SQLITE_API sqlite3 *SQLITE_STDCALL sqlite3_db_handle(sqlite3_stmt *pStmt){
return pStmt ? ((Vdbe*)pStmt)->db : 0;
}
** Return true if the prepared statement is guaranteed to not modify the
** database.
*/
-SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt){
+SQLITE_API int SQLITE_STDCALL sqlite3_stmt_readonly(sqlite3_stmt *pStmt){
return pStmt ? ((Vdbe*)pStmt)->readOnly : 1;
}
/*
** Return true if the prepared statement is in need of being reset.
*/
-SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt *pStmt){
+SQLITE_API int SQLITE_STDCALL sqlite3_stmt_busy(sqlite3_stmt *pStmt){
Vdbe *v = (Vdbe*)pStmt;
return v!=0 && v->pc>=0 && v->magic==VDBE_MAGIC_RUN;
}
** prepared statement for the database connection. Return NULL if there
** are no more.
*/
-SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt){
+SQLITE_API sqlite3_stmt *SQLITE_STDCALL sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt){
sqlite3_stmt *pNext;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(pDb) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
sqlite3_mutex_enter(pDb->mutex);
if( pStmt==0 ){
pNext = (sqlite3_stmt*)pDb->pVdbe;
/*
** Return the value of a status counter for a prepared statement
*/
-SQLITE_API int sqlite3_stmt_status(sqlite3_stmt *pStmt, int op, int resetFlag){
+SQLITE_API int SQLITE_STDCALL sqlite3_stmt_status(sqlite3_stmt *pStmt, int op, int resetFlag){
Vdbe *pVdbe = (Vdbe*)pStmt;
- u32 v = pVdbe->aCounter[op];
+ u32 v;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !pStmt ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
+ v = pVdbe->aCounter[op];
if( resetFlag ) pVdbe->aCounter[op] = 0;
return (int)v;
}
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+/*
+** Return status data for a single loop within query pStmt.
+*/
+SQLITE_API int SQLITE_STDCALL sqlite3_stmt_scanstatus(
+ sqlite3_stmt *pStmt, /* Prepared statement being queried */
+ int idx, /* Index of loop to report on */
+ int iScanStatusOp, /* Which metric to return */
+ void *pOut /* OUT: Write the answer here */
+){
+ Vdbe *p = (Vdbe*)pStmt;
+ ScanStatus *pScan;
+ if( idx<0 || idx>=p->nScan ) return 1;
+ pScan = &p->aScan[idx];
+ switch( iScanStatusOp ){
+ case SQLITE_SCANSTAT_NLOOP: {
+ *(sqlite3_int64*)pOut = p->anExec[pScan->addrLoop];
+ break;
+ }
+ case SQLITE_SCANSTAT_NVISIT: {
+ *(sqlite3_int64*)pOut = p->anExec[pScan->addrVisit];
+ break;
+ }
+ case SQLITE_SCANSTAT_EST: {
+ double r = 1.0;
+ LogEst x = pScan->nEst;
+ while( x<100 ){
+ x += 10;
+ r *= 0.5;
+ }
+ *(double*)pOut = r*sqlite3LogEstToInt(x);
+ break;
+ }
+ case SQLITE_SCANSTAT_NAME: {
+ *(const char**)pOut = pScan->zName;
+ break;
+ }
+ case SQLITE_SCANSTAT_EXPLAIN: {
+ if( pScan->addrExplain ){
+ *(const char**)pOut = p->aOp[ pScan->addrExplain ].p4.z;
+ }else{
+ *(const char**)pOut = 0;
+ }
+ break;
+ }
+ case SQLITE_SCANSTAT_SELECTID: {
+ if( pScan->addrExplain ){
+ *(int*)pOut = p->aOp[ pScan->addrExplain ].p1;
+ }else{
+ *(int*)pOut = -1;
+ }
+ break;
+ }
+ default: {
+ return 1;
+ }
+ }
+ return 0;
+}
+
+/*
+** Zero all counters associated with the sqlite3_stmt_scanstatus() data.
+*/
+SQLITE_API void SQLITE_STDCALL sqlite3_stmt_scanstatus_reset(sqlite3_stmt *pStmt){
+ Vdbe *p = (Vdbe*)pStmt;
+ memset(p->anExec, 0, p->nOp * sizeof(i64));
+}
+#endif /* SQLITE_ENABLE_STMT_SCANSTATUS */
+
/************** End of vdbeapi.c *********************************************/
/************** Begin file vdbetrace.c ***************************************/
/*
** is appropriate. But only do the conversion if it is possible without
** loss of information and return the revised type of the argument.
*/
-SQLITE_API int sqlite3_value_numeric_type(sqlite3_value *pVal){
+SQLITE_API int SQLITE_STDCALL sqlite3_value_numeric_type(sqlite3_value *pVal){
int eType = sqlite3_value_type(pVal);
if( eType==SQLITE_TEXT ){
Mem *pMem = (Mem*)pVal;
#endif
nVmStep++;
pOp = &aOp[pc];
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+ if( p->anExec ) p->anExec[pc]++;
+#endif
/* Only allow tracing if SQLITE_DEBUG is defined.
*/
** Synopsis: r[P2]='P4'
**
** P4 points to a nul terminated UTF-8 string. This opcode is transformed
-** into a String before it is executed for the first time. During
+** into a String opcode before it is executed for the first time. During
** this transformation, the length of string P4 is computed and stored
** as the P1 parameter.
*/
/* Fall through to the next case, OP_String */
}
-/* Opcode: String P1 P2 * P4 *
+/* Opcode: String P1 P2 P3 P4 P5
** Synopsis: r[P2]='P4' (len=P1)
**
** The string value P4 of length P1 (bytes) is stored in register P2.
+**
+** If P5!=0 and the content of register P3 is greater than zero, then
+** the datatype of the register P2 is converted to BLOB. The content is
+** the same sequence of bytes, it is merely interpreted as a BLOB instead
+** of a string, as if it had been CAST.
*/
case OP_String: { /* out2-prerelease */
assert( pOp->p4.z!=0 );
pOut->n = pOp->p1;
pOut->enc = encoding;
UPDATE_MAX_BLOBSIZE(pOut);
+ if( pOp->p5 ){
+ assert( pOp->p3>0 );
+ assert( pOp->p3<=(p->nMem-p->nCursor) );
+ pIn3 = &aMem[pOp->p3];
+ assert( pIn3->flags & MEM_Int );
+ if( pIn3->u.i ) pOut->flags = MEM_Blob|MEM_Static|MEM_Term;
+ }
break;
}
**
** The interface used by the implementation of the aforementioned functions
** to retrieve the collation sequence set by this opcode is not available
-** publicly, only to user functions defined in func.c.
+** publicly. Only built-in functions have access to this feature.
*/
case OP_CollSeq: {
assert( pOp->p4type==P4_COLLSEQ );
testcase( pIn1->flags & MEM_Int );
testcase( pIn1->flags & MEM_Real );
sqlite3VdbeMemStringify(pIn1, encoding, 1);
+ testcase( (flags1&MEM_Dyn) != (pIn1->flags&MEM_Dyn) );
+ flags1 = (pIn1->flags & ~MEM_TypeMask) | (flags1 & MEM_TypeMask);
}
if( (pIn3->flags & MEM_Str)==0 && (pIn3->flags & (MEM_Int|MEM_Real))!=0 ){
testcase( pIn3->flags & MEM_Int );
testcase( pIn3->flags & MEM_Real );
sqlite3VdbeMemStringify(pIn3, encoding, 1);
+ testcase( (flags3&MEM_Dyn) != (pIn3->flags&MEM_Dyn) );
+ flags3 = (pIn3->flags & ~MEM_TypeMask) | (flags3 & MEM_TypeMask);
}
}
assert( pOp->p4type==P4_COLLSEQ || pOp->p4.pColl==0 );
}
}
/* Undo any changes made by applyAffinity() to the input registers. */
+ assert( (pIn1->flags & MEM_Dyn) == (flags1 & MEM_Dyn) );
pIn1->flags = flags1;
+ assert( (pIn3->flags & MEM_Dyn) == (flags3 & MEM_Dyn) );
pIn3->flags = flags3;
break;
}
pC->payloadSize = pC->szRow = avail = pReg->n;
pC->aRow = (u8*)pReg->z;
}else{
- MemSetTypeFlag(pDest, MEM_Null);
+ sqlite3VdbeMemSetNull(pDest);
goto op_column_out;
}
}else{
if( pOp->p4type==P4_MEM ){
sqlite3VdbeMemShallowCopy(pDest, pOp->p4.pMem, MEM_Static);
}else{
- MemSetTypeFlag(pDest, MEM_Null);
+ sqlite3VdbeMemSetNull(pDest);
}
goto op_column_out;
}
nHdr += serial_type<=127 ? 1 : sqlite3VarintLen(serial_type);
}while( (--pRec)>=pData0 );
- /* Add the initial header varint and total the size */
+ /* EVIDENCE-OF: R-22564-11647 The header begins with a single varint
+ ** which determines the total number of bytes in the header. The varint
+ ** value is the size of the header in bytes including the size varint
+ ** itself. */
testcase( nHdr==126 );
testcase( nHdr==127 );
if( nHdr<=126 ){
pRec = pData0;
do{
serial_type = pRec->uTemp;
+ /* EVIDENCE-OF: R-06529-47362 Following the size varint are one or more
+ ** additional varints, one per column. */
i += putVarint32(&zNewRecord[i], serial_type); /* serial type */
+ /* EVIDENCE-OF: R-64536-51728 The values for each column in the record
+ ** immediately follow the header. */
j += sqlite3VdbeSerialPut(&zNewRecord[j], pRec, serial_type); /* content */
}while( (++pRec)<=pLast );
assert( i==nHdr );
db->isTransactionSavepoint = 0;
rc = p->rc;
}else{
+ int isSchemaChange;
iSavepoint = db->nSavepoint - iSavepoint - 1;
if( p1==SAVEPOINT_ROLLBACK ){
+ isSchemaChange = (db->flags & SQLITE_InternChanges)!=0;
for(ii=0; ii<db->nDb; ii++){
- sqlite3BtreeTripAllCursors(db->aDb[ii].pBt, SQLITE_ABORT);
+ rc = sqlite3BtreeTripAllCursors(db->aDb[ii].pBt,
+ SQLITE_ABORT_ROLLBACK,
+ isSchemaChange==0);
+ if( rc!=SQLITE_OK ) goto abort_due_to_error;
}
+ }else{
+ isSchemaChange = 0;
}
for(ii=0; ii<db->nDb; ii++){
rc = sqlite3BtreeSavepoint(db->aDb[ii].pBt, p1, iSavepoint);
goto abort_due_to_error;
}
}
- if( p1==SAVEPOINT_ROLLBACK && (db->flags&SQLITE_InternChanges)!=0 ){
+ if( isSchemaChange ){
sqlite3ExpirePreparedStatements(db);
sqlite3ResetAllSchemasOfConnection(db);
db->flags = (db->flags | SQLITE_InternChanges);
p->nStmtDefImmCons = db->nDeferredImmCons;
}
- /* Gather the schema version number for checking */
+ /* Gather the schema version number for checking:
+ ** IMPLEMENTATION-OF: R-32195-19465 The schema version is used by SQLite
+ ** each time a query is executed to ensure that the internal cache of the
+ ** schema used when compiling the SQL query matches the schema of the
+ ** database against which the compiled query is actually executed.
+ */
sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&iMeta);
iGen = db->aDb[pOp->p1].pSchema->iGeneration;
}else{
** See also OpenRead.
*/
case OP_ReopenIdx: {
+ int nField;
+ KeyInfo *pKeyInfo;
+ int p2;
+ int iDb;
+ int wrFlag;
+ Btree *pX;
VdbeCursor *pCur;
+ Db *pDb;
- assert( pOp->p5==0 );
+ assert( pOp->p5==0 || pOp->p5==OPFLAG_SEEKEQ );
assert( pOp->p4type==P4_KEYINFO );
pCur = p->apCsr[pOp->p1];
if( pCur && pCur->pgnoRoot==(u32)pOp->p2 ){
assert( pCur->iDb==pOp->p3 ); /* Guaranteed by the code generator */
- break;
+ goto open_cursor_set_hints;
}
/* If the cursor is not currently open or is open on a different
** index, then fall through into OP_OpenRead to force a reopen */
-}
case OP_OpenRead:
-case OP_OpenWrite: {
- int nField;
- KeyInfo *pKeyInfo;
- int p2;
- int iDb;
- int wrFlag;
- Btree *pX;
- VdbeCursor *pCur;
- Db *pDb;
+case OP_OpenWrite:
- assert( (pOp->p5&(OPFLAG_P2ISREG|OPFLAG_BULKCSR))==pOp->p5 );
- assert( pOp->opcode==OP_OpenWrite || pOp->p5==0 );
+ assert( (pOp->p5&(OPFLAG_P2ISREG|OPFLAG_BULKCSR|OPFLAG_SEEKEQ))==pOp->p5 );
+ assert( pOp->opcode==OP_OpenWrite || pOp->p5==0 || pOp->p5==OPFLAG_SEEKEQ );
assert( p->bIsReader );
assert( pOp->opcode==OP_OpenRead || pOp->opcode==OP_ReopenIdx
|| p->readOnly==0 );
if( p->expired ){
- rc = SQLITE_ABORT;
+ rc = SQLITE_ABORT_ROLLBACK;
break;
}
pCur->pgnoRoot = p2;
rc = sqlite3BtreeCursor(pX, p2, wrFlag, pKeyInfo, pCur->pCursor);
pCur->pKeyInfo = pKeyInfo;
- assert( OPFLAG_BULKCSR==BTREE_BULKLOAD );
- sqlite3BtreeCursorHints(pCur->pCursor, (pOp->p5 & OPFLAG_BULKCSR));
-
/* Set the VdbeCursor.isTable variable. Previous versions of
** SQLite used to check if the root-page flags were sane at this point
** and report database corruption if they were not, but this check has
** since moved into the btree layer. */
pCur->isTable = pOp->p4type!=P4_KEYINFO;
+
+open_cursor_set_hints:
+ assert( OPFLAG_BULKCSR==BTREE_BULKLOAD );
+ assert( OPFLAG_SEEKEQ==BTREE_SEEK_EQ );
+ sqlite3BtreeCursorHints(pCur->pCursor,
+ (pOp->p5 & (OPFLAG_BULKCSR|OPFLAG_SEEKEQ)));
break;
}
#ifdef SQLITE_DEBUG
pC->seekOp = pOp->opcode;
#endif
+
+ /* For a cursor with the BTREE_SEEK_EQ hint, only the OP_SeekGE and
+ ** OP_SeekLE opcodes are allowed, and these must be immediately followed
+ ** by an OP_IdxGT or OP_IdxLT opcode, respectively, with the same key.
+ */
+#ifdef SQLITE_DEBUG
+ if( sqlite3BtreeCursorHasHint(pC->pCursor, BTREE_SEEK_EQ) ){
+ assert( pOp->opcode==OP_SeekGE || pOp->opcode==OP_SeekLE );
+ assert( pOp[1].opcode==OP_IdxLT || pOp[1].opcode==OP_IdxGT );
+ assert( pOp[1].p1==pOp[0].p1 );
+ assert( pOp[1].p2==pOp[0].p2 );
+ assert( pOp[1].p3==pOp[0].p3 );
+ assert( pOp[1].p4.i==pOp[0].p4.i );
+ }
+#endif
+
if( pC->isTable ){
/* The input value in P3 might be of any type: integer, real, string,
** blob, or NULL. But it needs to be an integer before we can do
}else{
pIdxKey = sqlite3VdbeAllocUnpackedRecord(
pC->pKeyInfo, aTempRec, sizeof(aTempRec), &pFree
- );
+ );
if( pIdxKey==0 ) goto no_mem;
assert( pIn3->flags & MEM_Blob );
- assert( (pIn3->flags & MEM_Zero)==0 ); /* zeroblobs already expanded */
+ ExpandBlob(pIn3);
sqlite3VdbeRecordUnpack(pC->pKeyInfo, pIn3->n, pIn3->z, pIdxKey);
}
pIdxKey->default_rc = 0;
/* For the OP_NoConflict opcode, take the jump if any of the
** input fields are NULL, since any key with a NULL will not
** conflict */
- for(ii=0; ii<r.nField; ii++){
- if( r.aMem[ii].flags & MEM_Null ){
+ for(ii=0; ii<pIdxKey->nField; ii++){
+ if( pIdxKey->aMem[ii].flags & MEM_Null ){
pc = pOp->p2 - 1; VdbeBranchTaken(1,2);
break;
}
assert( pC->pCursor!=0 );
rc = sqlite3VdbeCursorRestore(pC);
if( rc ) goto abort_due_to_error;
+ if( pC->nullRow ){
+ pOut->flags = MEM_Null;
+ break;
+ }
rc = sqlite3BtreeKeySize(pC->pCursor, &v);
assert( rc==SQLITE_OK ); /* Always so because of CursorRestore() above */
}
**
** The next use of the Rowid or Column or Next instruction for P1
** will refer to the first entry in the database table or index.
-** If the table or index is empty and P2>0, then jump immediately to P2.
-** If P2 is 0 or if the table or index is not empty, fall through
-** to the following instruction.
+** If the table or index is empty, jump immediately to P2.
+** If the table or index is not empty, fall through to the following
+** instruction.
**
** This opcode leaves the cursor configured to move in forward order,
** from the beginning toward the end. In other words, the cursor is
*/
case OP_Destroy: { /* out2-prerelease */
int iMoved;
- int iCnt;
- Vdbe *pVdbe;
int iDb;
assert( p->readOnly==0 );
-#ifndef SQLITE_OMIT_VIRTUALTABLE
- iCnt = 0;
- for(pVdbe=db->pVdbe; pVdbe; pVdbe = pVdbe->pNext){
- if( pVdbe->magic==VDBE_MAGIC_RUN && pVdbe->bIsReader
- && pVdbe->inVtabMethod<2 && pVdbe->pc>=0
- ){
- iCnt++;
- }
- }
-#else
- iCnt = db->nVdbeRead;
-#endif
pOut->flags = MEM_Null;
- if( iCnt>1 ){
+ if( db->nVdbeRead > db->nVDestroy+1 ){
rc = SQLITE_LOCKED;
p->errorAction = OE_Abort;
}else{
iDb = pOp->p3;
- assert( iCnt==1 );
assert( DbMaskTest(p->btreeMask, iDb) );
iMoved = 0; /* Not needed. Only to silence a warning. */
rc = sqlite3BtreeDropTable(db->aDb[iDb].pBt, pOp->p1, &iMoved);
pFrame->token = pProgram->token;
pFrame->aOnceFlag = p->aOnceFlag;
pFrame->nOnceFlag = p->nOnceFlag;
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+ pFrame->anExec = p->anExec;
+#endif
pEnd = &VdbeFrameMem(pFrame)[pFrame->nChildMem];
for(pMem=VdbeFrameMem(pFrame); pMem!=pEnd; pMem++){
pFrame->pParent = p->pFrame;
pFrame->lastRowid = lastRowid;
pFrame->nChange = p->nChange;
+ pFrame->nDbChange = p->db->nChange;
p->nChange = 0;
p->pFrame = pFrame;
p->aMem = aMem = &VdbeFrameMem(pFrame)[-1];
p->nOp = pProgram->nOp;
p->aOnceFlag = (u8 *)&p->apCsr[p->nCursor];
p->nOnceFlag = pProgram->nOnce;
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+ p->anExec = 0;
+#endif
pc = -1;
memset(p->aOnceFlag, 0, p->nOnceFlag);
/* Opcode: IfPos P1 P2 * * *
** Synopsis: if r[P1]>0 goto P2
**
-** If the value of register P1 is 1 or greater, jump to P2.
+** Register P1 must contain an integer.
+** If the value of register P1 is 1 or greater, jump to P2 and
+** add the literal value P3 to register P1.
**
-** It is illegal to use this instruction on a register that does
-** not contain an integer. An assertion fault will result if you try.
+** If the initial value of register P1 is less than 1, then the
+** value is unchanged and control passes through to the next instruction.
*/
case OP_IfPos: { /* jump, in1 */
pIn1 = &aMem[pOp->p1];
break;
}
-/* Opcode: IfZero P1 P2 P3 * *
-** Synopsis: r[P1]+=P3, if r[P1]==0 goto P2
+/* Opcode: IfNotZero P1 P2 P3 * *
+** Synopsis: if r[P1]!=0 then r[P1]+=P3, goto P2
**
-** The register P1 must contain an integer. Add literal P3 to the
-** value in register P1. If the result is exactly 0, jump to P2.
+** Register P1 must contain an integer. If the content of register P1 is
+** initially nonzero, then add P3 to P1 and jump to P2. If register P1 is
+** initially zero, leave it unchanged and fall through.
*/
-case OP_IfZero: { /* jump, in1 */
+case OP_IfNotZero: { /* jump, in1 */
pIn1 = &aMem[pOp->p1];
assert( pIn1->flags&MEM_Int );
- pIn1->u.i += pOp->p3;
+ VdbeBranchTaken(pIn1->u.i<0, 2);
+ if( pIn1->u.i ){
+ pIn1->u.i += pOp->p3;
+ pc = pOp->p2 - 1;
+ }
+ break;
+}
+
+/* Opcode: DecrJumpZero P1 P2 * * *
+** Synopsis: if (--r[P1])==0 goto P2
+**
+** Register P1 must hold an integer. Decrement the value in register P1
+** then jump to P2 if the new value is exactly zero.
+*/
+case OP_DecrJumpZero: { /* jump, in1 */
+ pIn1 = &aMem[pOp->p1];
+ assert( pIn1->flags&MEM_Int );
+ pIn1->u.i--;
VdbeBranchTaken(pIn1->u.i==0, 2);
if( pIn1->u.i==0 ){
pc = pOp->p2 - 1;
break;
}
+
+/* Opcode: JumpZeroIncr P1 P2 * * *
+** Synopsis: if (r[P1]++)==0 ) goto P2
+**
+** The register P1 must contain an integer. If register P1 is initially
+** zero, then jump to P2. Increment register P1 regardless of whether or
+** not the jump is taken.
+*/
+case OP_JumpZeroIncr: { /* jump, in1 */
+ pIn1 = &aMem[pOp->p1];
+ assert( pIn1->flags&MEM_Int );
+ VdbeBranchTaken(pIn1->u.i==0, 2);
+ if( (pIn1->u.i++)==0 ){
+ pc = pOp->p2 - 1;
+ }
+ break;
+}
+
/* Opcode: AggStep * P2 P3 P4 P5
** Synopsis: accum=r[P3] step(r[P2@P5])
**
/* Opcode: Checkpoint P1 P2 P3 * *
**
** Checkpoint database P1. This is a no-op if P1 is not currently in
-** WAL mode. Parameter P2 is one of SQLITE_CHECKPOINT_PASSIVE, FULL
-** or RESTART. Write 1 or 0 into mem[P3] if the checkpoint returns
+** WAL mode. Parameter P2 is one of SQLITE_CHECKPOINT_PASSIVE, FULL,
+** RESTART, or TRUNCATE. Write 1 or 0 into mem[P3] if the checkpoint returns
** SQLITE_BUSY or not, respectively. Write the number of pages in the
** WAL after the checkpoint into mem[P3+1] and the number of pages
** in the WAL that have been checkpointed after the checkpoint
assert( pOp->p2==SQLITE_CHECKPOINT_PASSIVE
|| pOp->p2==SQLITE_CHECKPOINT_FULL
|| pOp->p2==SQLITE_CHECKPOINT_RESTART
+ || pOp->p2==SQLITE_CHECKPOINT_TRUNCATE
);
rc = sqlite3Checkpoint(db, pOp->p1, pOp->p2, &aRes[1], &aRes[2]);
if( rc==SQLITE_BUSY ){
#endif /* SQLITE_OMIT_VIRTUALTABLE */
#ifndef SQLITE_OMIT_VIRTUALTABLE
-/* Opcode: VCreate P1 * * P4 *
+/* Opcode: VCreate P1 P2 * * *
**
-** P4 is the name of a virtual table in database P1. Call the xCreate method
-** for that table.
+** P2 is a register that holds the name of a virtual table in database
+** P1. Call the xCreate method for that table.
*/
case OP_VCreate: {
- rc = sqlite3VtabCallCreate(db, pOp->p1, pOp->p4.z, &p->zErrMsg);
+ Mem sMem; /* For storing the record being decoded */
+ const char *zTab; /* Name of the virtual table */
+
+ memset(&sMem, 0, sizeof(sMem));
+ sMem.db = db;
+ /* Because P2 is always a static string, it is impossible for the
+ ** sqlite3VdbeMemCopy() to fail */
+ assert( (aMem[pOp->p2].flags & MEM_Str)!=0 );
+ assert( (aMem[pOp->p2].flags & MEM_Static)!=0 );
+ rc = sqlite3VdbeMemCopy(&sMem, &aMem[pOp->p2]);
+ assert( rc==SQLITE_OK );
+ zTab = (const char*)sqlite3_value_text(&sMem);
+ assert( zTab || db->mallocFailed );
+ if( zTab ){
+ rc = sqlite3VtabCallCreate(db, pOp->p1, zTab, &p->zErrMsg);
+ }
+ sqlite3VdbeMemRelease(&sMem);
break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */
** of that table.
*/
case OP_VDestroy: {
- p->inVtabMethod = 2;
+ db->nVDestroy++;
rc = sqlite3VtabCallDestroy(db, pOp->p1, pOp->p4.z);
- p->inVtabMethod = 0;
+ db->nVDestroy--;
break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */
VdbeCursor *pCur;
sqlite3_vtab_cursor *pVtabCursor;
sqlite3_vtab *pVtab;
- sqlite3_module *pModule;
+ const sqlite3_module *pModule;
assert( p->bIsReader );
pCur = 0;
pVtabCursor = 0;
pVtab = pOp->p4.pVtab->pVtab;
- pModule = (sqlite3_module *)pVtab->pModule;
- assert(pVtab && pModule);
+ if( pVtab==0 || NEVER(pVtab->pModule==0) ){
+ rc = SQLITE_LOCKED;
+ break;
+ }
+ pModule = pVtab->pModule;
rc = pModule->xOpen(pVtab, &pVtabCursor);
sqlite3VtabImportErrmsg(p, pVtab);
if( SQLITE_OK==rc ){
pCur = allocateCursor(p, pOp->p1, 0, -1, 0);
if( pCur ){
pCur->pVtabCursor = pVtabCursor;
+ pVtab->nRef++;
}else{
db->mallocFailed = 1;
pModule->xClose(pVtabCursor);
apArg[i] = &pArgc[i+1];
}
- p->inVtabMethod = 1;
rc = pModule->xFilter(pVtabCursor, iQuery, pOp->p4.z, nArg, apArg);
- p->inVtabMethod = 0;
sqlite3VtabImportErrmsg(p, pVtab);
if( rc==SQLITE_OK ){
res = pModule->xEof(pVtabCursor);
** data is available) and the error code returned when xColumn or
** some other method is next invoked on the save virtual table cursor.
*/
- p->inVtabMethod = 1;
rc = pModule->xNext(pCur->pVtabCursor);
- p->inVtabMethod = 0;
sqlite3VtabImportErrmsg(p, pVtab);
if( rc==SQLITE_OK ){
res = pModule->xEof(pCur->pVtabCursor);
*/
case OP_VUpdate: {
sqlite3_vtab *pVtab;
- sqlite3_module *pModule;
+ const sqlite3_module *pModule;
int nArg;
int i;
sqlite_int64 rowid;
);
assert( p->readOnly==0 );
pVtab = pOp->p4.pVtab->pVtab;
- pModule = (sqlite3_module *)pVtab->pModule;
+ if( pVtab==0 || NEVER(pVtab->pModule==0) ){
+ rc = SQLITE_LOCKED;
+ break;
+ }
+ pModule = pVtab->pModule;
nArg = pOp->p2;
assert( pOp->p4type==P4_VTAB );
if( ALWAYS(pModule->xUpdate) ){
/*
** Open a blob handle.
*/
-SQLITE_API int sqlite3_blob_open(
+SQLITE_API int SQLITE_STDCALL sqlite3_blob_open(
sqlite3* db, /* The database connection */
const char *zDb, /* The attached database containing the blob */
const char *zTable, /* The table containing the blob */
Parse *pParse = 0;
Incrblob *pBlob = 0;
- flags = !!flags; /* flags = (flags ? 1 : 0); */
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( ppBlob==0 ){
+ return SQLITE_MISUSE_BKPT;
+ }
+#endif
*ppBlob = 0;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) || zTable==0 ){
+ return SQLITE_MISUSE_BKPT;
+ }
+#endif
+ flags = !!flags; /* flags = (flags ? 1 : 0); */
sqlite3_mutex_enter(db->mutex);
** Close a blob handle that was previously created using
** sqlite3_blob_open().
*/
-SQLITE_API int sqlite3_blob_close(sqlite3_blob *pBlob){
+SQLITE_API int SQLITE_STDCALL sqlite3_blob_close(sqlite3_blob *pBlob){
Incrblob *p = (Incrblob *)pBlob;
int rc;
sqlite3 *db;
sqlite3_mutex_enter(db->mutex);
v = (Vdbe*)p->pStmt;
- if( n<0 || iOffset<0 || (iOffset+n)>p->nByte ){
+ if( n<0 || iOffset<0 || ((sqlite3_int64)iOffset+n)>p->nByte ){
/* Request is out of range. Return a transient error. */
rc = SQLITE_ERROR;
- sqlite3Error(db, SQLITE_ERROR);
}else if( v==0 ){
/* If there is no statement handle, then the blob-handle has
** already been invalidated. Return SQLITE_ABORT in this case.
sqlite3VdbeFinalize(v);
p->pStmt = 0;
}else{
- db->errCode = rc;
v->rc = rc;
}
}
+ sqlite3Error(db, rc);
rc = sqlite3ApiExit(db, rc);
sqlite3_mutex_leave(db->mutex);
return rc;
/*
** Read data from a blob handle.
*/
-SQLITE_API int sqlite3_blob_read(sqlite3_blob *pBlob, void *z, int n, int iOffset){
+SQLITE_API int SQLITE_STDCALL sqlite3_blob_read(sqlite3_blob *pBlob, void *z, int n, int iOffset){
return blobReadWrite(pBlob, z, n, iOffset, sqlite3BtreeData);
}
/*
** Write data to a blob handle.
*/
-SQLITE_API int sqlite3_blob_write(sqlite3_blob *pBlob, const void *z, int n, int iOffset){
+SQLITE_API int SQLITE_STDCALL sqlite3_blob_write(sqlite3_blob *pBlob, const void *z, int n, int iOffset){
return blobReadWrite(pBlob, (void *)z, n, iOffset, sqlite3BtreePutData);
}
** The Incrblob.nByte field is fixed for the lifetime of the Incrblob
** so no mutex is required for access.
*/
-SQLITE_API int sqlite3_blob_bytes(sqlite3_blob *pBlob){
+SQLITE_API int SQLITE_STDCALL sqlite3_blob_bytes(sqlite3_blob *pBlob){
Incrblob *p = (Incrblob *)pBlob;
return (p && p->pStmt) ? p->nByte : 0;
}
** subsequent calls to sqlite3_blob_xxx() functions (except blob_close())
** immediately return SQLITE_ABORT.
*/
-SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){
+SQLITE_API int SQLITE_STDCALL sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){
int rc;
Incrblob *p = (Incrblob *)pBlob;
sqlite3 *db;
** The sorter is running in multi-threaded mode if (a) the library was built
** with pre-processor symbol SQLITE_MAX_WORKER_THREADS set to a value greater
** than zero, and (b) worker threads have been enabled at runtime by calling
-** sqlite3_config(SQLITE_CONFIG_WORKER_THREADS, ...).
+** "PRAGMA threads=N" with some value of N greater than 0.
**
** When Rewind() is called, any data remaining in memory is flushed to a
** final PMA. So at this point the data is stored in some number of sorted
# define SQLITE_DEBUG_SORTER_THREADS 1
#endif
+/*
+** Hard-coded maximum amount of data to accumulate in memory before flushing
+** to a level 0 PMA. The purpose of this limit is to prevent various integer
+** overflows. 512MiB.
+*/
+#define SQLITE_MAX_PMASZ (1<<29)
+
/*
** Private objects used by the sorter
*/
*/
#define SRVAL(p) ((void*)((SorterRecord*)(p) + 1))
-/* The minimum PMA size is set to this value multiplied by the database
-** page size in bytes. */
-#define SORTER_MIN_WORKING 10
/* Maximum number of PMAs that a single MergeEngine can merge */
#define SORTER_MAX_MERGE_COUNT 16
}
if( !sqlite3TempInMemory(db) ){
- pSorter->mnPmaSize = SORTER_MIN_WORKING * pgsz;
+ u32 szPma = sqlite3GlobalConfig.szPma;
+ pSorter->mnPmaSize = szPma * pgsz;
mxCache = db->aDb[0].pSchema->cache_size;
- if( mxCache<SORTER_MIN_WORKING ) mxCache = SORTER_MIN_WORKING;
- pSorter->mxPmaSize = mxCache * pgsz;
-
- /* If the application has not configure scratch memory using
- ** SQLITE_CONFIG_SCRATCH then we assume it is OK to do large memory
- ** allocations. If scratch memory has been configured, then assume
- ** large memory allocations should be avoided to prevent heap
- ** fragmentation.
+ if( mxCache<(int)szPma ) mxCache = (int)szPma;
+ pSorter->mxPmaSize = MIN((i64)mxCache*pgsz, SQLITE_MAX_PMASZ);
+
+ /* EVIDENCE-OF: R-26747-61719 When the application provides any amount of
+ ** scratch memory using SQLITE_CONFIG_SCRATCH, SQLite avoids unnecessary
+ ** large heap allocations.
*/
if( sqlite3GlobalConfig.pScratch==0 ){
assert( pSorter->iMemory==0 );
*/
static void vdbeSorterExtendFile(sqlite3 *db, sqlite3_file *pFd, i64 nByte){
if( nByte<=(i64)(db->nMaxSorterMmap) && pFd->pMethods->iVersion>=3 ){
- int rc = sqlite3OsTruncate(pFd, nByte);
- if( rc==SQLITE_OK ){
- void *p = 0;
- sqlite3OsFetch(pFd, 0, (int)nByte, &p);
- sqlite3OsUnfetch(pFd, 0, p);
- }
+ void *p = 0;
+ int chunksize = 4*1024;
+ sqlite3OsFileControlHint(pFd, SQLITE_FCNTL_CHUNK_SIZE, &chunksize);
+ sqlite3OsFileControlHint(pFd, SQLITE_FCNTL_SIZE_HINT, &nByte);
+ sqlite3OsFetch(pFd, 0, (int)nByte, &p);
+ sqlite3OsUnfetch(pFd, 0, p);
}
}
#else
sqlite3_file **ppFd
){
int rc;
+ if( sqlite3FaultSim(202) ) return SQLITE_IOERR_ACCESS;
rc = sqlite3OsOpenMalloc(db->pVfs, 0, ppFd,
SQLITE_OPEN_TEMP_JOURNAL |
SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE |
}else
#endif
/*if( !pSorter->bUseThreads )*/ {
+ assert( pSorter->pMerger!=0 );
assert( pSorter->pMerger->pTask==(&pSorter->aTask[0]) );
rc = vdbeMergeEngineStep(pSorter->pMerger, pbEof);
}
** is a helper function - a callback for the tree walker.
*/
static int incrAggDepth(Walker *pWalker, Expr *pExpr){
- if( pExpr->op==TK_AGG_FUNCTION ) pExpr->op2 += pWalker->u.i;
+ if( pExpr->op==TK_AGG_FUNCTION ) pExpr->op2 += pWalker->u.n;
return WRC_Continue;
}
static void incrAggFunctionDepth(Expr *pExpr, int N){
Walker w;
memset(&w, 0, sizeof(w));
w.xExprCallback = incrAggDepth;
- w.u.i = N;
+ w.u.n = N;
sqlite3WalkExpr(&w, pExpr);
}
}
testcase( pNC->ncFlags & NC_PartIdx );
testcase( pNC->ncFlags & NC_IsCheck );
if( (pNC->ncFlags & (NC_PartIdx|NC_IsCheck))!=0 ){
- /* Silently ignore database qualifiers inside CHECK constraints and partial
- ** indices. Do not raise errors because that might break legacy and
- ** because it does not hurt anything to just ignore the database name. */
+ /* Silently ignore database qualifiers inside CHECK constraints and
+ ** partial indices. Do not raise errors because that might break
+ ** legacy and because it does not hurt anything to just ignore the
+ ** database name. */
zDb = 0;
}else{
for(i=0; i<db->nDb; i++){
if( pMatch ){
pExpr->iTable = pMatch->iCursor;
pExpr->pTab = pMatch->pTab;
+ /* RIGHT JOIN not (yet) supported */
+ assert( (pMatch->jointype & JT_RIGHT)==0 );
+ if( (pMatch->jointype & JT_LEFT)!=0 ){
+ ExprSetProperty(pExpr, EP_CanBeNull);
+ }
pSchema = pExpr->pTab->pSchema;
}
} /* if( pSrcList ) */
sqlite3AtoF(p->u.zToken, &r, sqlite3Strlen30(p->u.zToken), SQLITE_UTF8);
assert( r>=0.0 );
if( r>1.0 ) return -1;
- return (int)(r*1000.0);
+ return (int)(r*134217728.0);
}
/*
pExpr->affinity = SQLITE_AFF_INTEGER;
break;
}
-#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY) */
+#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT)
+ && !defined(SQLITE_OMIT_SUBQUERY) */
/* A lone identifier is the name of a column.
*/
if( n==2 ){
pExpr->iTable = exprProbability(pList->a[1].pExpr);
if( pExpr->iTable<0 ){
- sqlite3ErrorMsg(pParse, "second argument to likelihood() must be a "
- "constant between 0.0 and 1.0");
+ sqlite3ErrorMsg(pParse,
+ "second argument to likelihood() must be a "
+ "constant between 0.0 and 1.0");
pNC->nErr++;
}
}else{
- /* EVIDENCE-OF: R-61304-29449 The unlikely(X) function is equivalent to
- ** likelihood(X, 0.0625).
- ** EVIDENCE-OF: R-01283-11636 The unlikely(X) function is short-hand for
- ** likelihood(X,0.0625).
- ** EVIDENCE-OF: R-36850-34127 The likely(X) function is short-hand for
- ** likelihood(X,0.9375).
- ** EVIDENCE-OF: R-53436-40973 The likely(X) function is equivalent to
- ** likelihood(X,0.9375). */
+ /* EVIDENCE-OF: R-61304-29449 The unlikely(X) function is
+ ** equivalent to likelihood(X, 0.0625).
+ ** EVIDENCE-OF: R-01283-11636 The unlikely(X) function is
+ ** short-hand for likelihood(X,0.0625).
+ ** EVIDENCE-OF: R-36850-34127 The likely(X) function is short-hand
+ ** for likelihood(X,0.9375).
+ ** EVIDENCE-OF: R-53436-40973 The likely(X) function is equivalent
+ ** to likelihood(X,0.9375). */
/* TUNING: unlikely() probability is 0.0625. likely() is 0.9375 */
- pExpr->iTable = pDef->zName[0]=='u' ? 62 : 938;
+ pExpr->iTable = pDef->zName[0]=='u' ? 8388608 : 125829120;
}
}
#ifndef SQLITE_OMIT_AUTHORIZATION
return WRC_Prune;
}
#endif
- if( pDef->funcFlags & SQLITE_FUNC_CONSTANT ) ExprSetProperty(pExpr,EP_Constant);
+ if( pDef->funcFlags & SQLITE_FUNC_CONSTANT ){
+ ExprSetProperty(pExpr,EP_ConstFunc);
+ }
}
if( is_agg && (pNC->ncFlags & NC_AllowAgg)==0 ){
sqlite3ErrorMsg(pParse, "misuse of aggregate function %.*s()", nId,zId);
resolveOutOfRangeError(pParse, zType, i+1, pEList->nExpr);
return 1;
}
- resolveAlias(pParse, pEList, pItem->u.x.iOrderByCol-1, pItem->pExpr, zType,0);
+ resolveAlias(pParse, pEList, pItem->u.x.iOrderByCol-1, pItem->pExpr,
+ zType,0);
}
}
return 0;
sqlite3ResolveExprNames(&sNC, p->pOffset) ){
return WRC_Abort;
}
+
+ /* If the SF_Converted flags is set, then this Select object was
+ ** was created by the convertCompoundSelectToSubquery() function.
+ ** In this case the ORDER BY clause (p->pOrderBy) should be resolved
+ ** as if it were part of the sub-query, not the parent. This block
+ ** moves the pOrderBy down to the sub-query. It will be moved back
+ ** after the names have been resolved. */
+ if( p->selFlags & SF_Converted ){
+ Select *pSub = p->pSrc->a[0].pSelect;
+ assert( p->pSrc->nSrc==1 && isCompound==0 && p->pOrderBy );
+ assert( pSub->pPrior && pSub->pOrderBy==0 );
+ pSub->pOrderBy = p->pOrderBy;
+ p->pOrderBy = 0;
+ }
/* Recursively resolve names in all subqueries
*/
sNC.pNext = 0;
sNC.ncFlags |= NC_AllowAgg;
+ /* If this is a converted compound query, move the ORDER BY clause from
+ ** the sub-query back to the parent query. At this point each term
+ ** within the ORDER BY clause has been transformed to an integer value.
+ ** These integers will be replaced by copies of the corresponding result
+ ** set expressions by the call to resolveOrderGroupBy() below. */
+ if( p->selFlags & SF_Converted ){
+ Select *pSub = p->pSrc->a[0].pSelect;
+ p->pOrderBy = pSub->pOrderBy;
+ pSub->pOrderBy = 0;
+ }
+
/* Process the ORDER BY clause for singleton SELECT statements.
** The ORDER BY clause for compounds SELECT statements is handled
** below, after all of the result-sets for all of the elements of
SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(
Parse *pParse, /* Parsing context */
Expr *pExpr, /* Add the "COLLATE" clause to this expression */
- const Token *pCollName /* Name of collating sequence */
+ const Token *pCollName, /* Name of collating sequence */
+ int dequote /* True to dequote pCollName */
){
if( pCollName->n>0 ){
- Expr *pNew = sqlite3ExprAlloc(pParse->db, TK_COLLATE, pCollName, 1);
+ Expr *pNew = sqlite3ExprAlloc(pParse->db, TK_COLLATE, pCollName, dequote);
if( pNew ){
pNew->pLeft = pExpr;
pNew->flags |= EP_Collate|EP_Skip;
assert( zC!=0 );
s.z = zC;
s.n = sqlite3Strlen30(s.z);
- return sqlite3ExprAddCollateToken(pParse, pExpr, &s);
+ return sqlite3ExprAddCollateToken(pParse, pExpr, &s, 0);
}
/*
pColl = sqlite3GetCollSeq(pParse, ENC(db), 0, p->u.zToken);
break;
}
- if( p->pTab!=0
- && (op==TK_AGG_COLUMN || op==TK_COLUMN
+ if( (op==TK_AGG_COLUMN || op==TK_COLUMN
|| op==TK_REGISTER || op==TK_TRIGGER)
+ && p->pTab!=0
){
/* op==TK_REGISTER && p->pTab!=0 happens when pExpr was originally
** a TK_COLUMN but was previously evaluated and cached in a register */
break;
}
if( p->flags & EP_Collate ){
- if( ALWAYS(p->pLeft) && (p->pLeft->flags & EP_Collate)!=0 ){
+ if( p->pLeft && (p->pLeft->flags & EP_Collate)!=0 ){
p = p->pLeft;
}else{
- p = p->pRight;
+ Expr *pNext = p->pRight;
+ /* The Expr.x union is never used at the same time as Expr.pRight */
+ assert( p->x.pList==0 || p->pRight==0 );
+ /* p->flags holds EP_Collate and p->pLeft->flags does not. And
+ ** p->x.pSelect cannot. So if p->x.pLeft exists, it must hold at
+ ** least one EP_Collate. Thus the following two ALWAYS. */
+ if( p->x.pList!=0 && ALWAYS(!ExprHasProperty(p, EP_xIsSelect)) ){
+ int i;
+ for(i=0; ALWAYS(i<p->x.pList->nExpr); i++){
+ if( ExprHasProperty(p->x.pList->a[i].pExpr, EP_Collate) ){
+ pNext = p->x.pList->a[i].pExpr;
+ break;
+ }
+ }
+ }
+ p = pNext;
}
}else{
break;
** Expr.pSelect member has a height of 1. Any other expression
** has a height equal to the maximum height of any other
** referenced Expr plus one.
+**
+** Also propagate EP_Propagate flags up from Expr.x.pList to Expr.flags,
+** if appropriate.
*/
static void exprSetHeight(Expr *p){
int nHeight = 0;
heightOfExpr(p->pRight, &nHeight);
if( ExprHasProperty(p, EP_xIsSelect) ){
heightOfSelect(p->x.pSelect, &nHeight);
- }else{
+ }else if( p->x.pList ){
heightOfExprList(p->x.pList, &nHeight);
+ p->flags |= EP_Propagate & sqlite3ExprListFlags(p->x.pList);
}
p->nHeight = nHeight + 1;
}
** Set the Expr.nHeight variable using the exprSetHeight() function. If
** the height is greater than the maximum allowed expression depth,
** leave an error in pParse.
+**
+** Also propagate all EP_Propagate flags from the Expr.x.pList into
+** Expr.flags.
*/
-SQLITE_PRIVATE void sqlite3ExprSetHeight(Parse *pParse, Expr *p){
+SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p){
+ if( pParse->nErr ) return;
exprSetHeight(p);
sqlite3ExprCheckHeight(pParse, p->nHeight);
}
heightOfSelect(p, &nHeight);
return nHeight;
}
-#else
- #define exprSetHeight(y)
+#else /* ABOVE: Height enforcement enabled. BELOW: Height enforcement off */
+/*
+** Propagate all EP_Propagate flags from the Expr.x.pList into
+** Expr.flags.
+*/
+SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p){
+ if( p && p->x.pList && !ExprHasProperty(p, EP_xIsSelect) ){
+ p->flags |= EP_Propagate & sqlite3ExprListFlags(p->x.pList);
+ }
+}
+#define exprSetHeight(y)
#endif /* SQLITE_MAX_EXPR_DEPTH>0 */
/*
}else{
if( pRight ){
pRoot->pRight = pRight;
- pRoot->flags |= EP_Collate & pRight->flags;
+ pRoot->flags |= EP_Propagate & pRight->flags;
}
if( pLeft ){
pRoot->pLeft = pLeft;
- pRoot->flags |= EP_Collate & pLeft->flags;
+ pRoot->flags |= EP_Propagate & pLeft->flags;
}
exprSetHeight(pRoot);
}
const Token *pToken /* Argument token */
){
Expr *p;
- if( op==TK_AND && pLeft && pRight ){
+ if( op==TK_AND && pLeft && pRight && pParse->nErr==0 ){
/* Take advantage of short-circuit false optimization for AND */
p = sqlite3ExprAnd(pParse->db, pLeft, pRight);
}else{
}
pNew->x.pList = pList;
assert( !ExprHasProperty(pNew, EP_xIsSelect) );
- sqlite3ExprSetHeight(pParse, pNew);
+ sqlite3ExprSetHeightAndFlags(pParse, pNew);
return pNew;
}
}
/*
-** These routines are Walker callbacks. Walker.u.pi is a pointer
-** to an integer. These routines are checking an expression to see
-** if it is a constant. Set *Walker.u.i to 0 if the expression is
-** not constant.
+** Return the bitwise-OR of all Expr.flags fields in the given
+** ExprList.
+*/
+SQLITE_PRIVATE u32 sqlite3ExprListFlags(const ExprList *pList){
+ int i;
+ u32 m = 0;
+ if( pList ){
+ for(i=0; i<pList->nExpr; i++){
+ m |= pList->a[i].pExpr->flags;
+ }
+ }
+ return m;
+}
+
+/*
+** These routines are Walker callbacks used to check expressions to
+** see if they are "constant" for some definition of constant. The
+** Walker.eCode value determines the type of "constant" we are looking
+** for.
**
** These callback routines are used to implement the following:
**
-** sqlite3ExprIsConstant() pWalker->u.i==1
-** sqlite3ExprIsConstantNotJoin() pWalker->u.i==2
-** sqlite3ExprIsConstantOrFunction() pWalker->u.i==3 or 4
+** sqlite3ExprIsConstant() pWalker->eCode==1
+** sqlite3ExprIsConstantNotJoin() pWalker->eCode==2
+** sqlite3ExprRefOneTableOnly() pWalker->eCode==3
+** sqlite3ExprIsConstantOrFunction() pWalker->eCode==4 or 5
+**
+** In all cases, the callbacks set Walker.eCode=0 and abort if the expression
+** is found to not be a constant.
**
** The sqlite3ExprIsConstantOrFunction() is used for evaluating expressions
-** in a CREATE TABLE statement. The Walker.u.i value is 4 when parsing
-** an existing schema and 3 when processing a new statement. A bound
+** in a CREATE TABLE statement. The Walker.eCode value is 5 when parsing
+** an existing schema and 4 when processing a new statement. A bound
** parameter raises an error for new statements, but is silently converted
** to NULL for existing schemas. This allows sqlite_master tables that
** contain a bound parameter because they were generated by older versions
*/
static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
- /* If pWalker->u.i is 2 then any term of the expression that comes from
- ** the ON or USING clauses of a join disqualifies the expression
+ /* If pWalker->eCode is 2 then any term of the expression that comes from
+ ** the ON or USING clauses of a left join disqualifies the expression
** from being considered constant. */
- if( pWalker->u.i==2 && ExprHasProperty(pExpr, EP_FromJoin) ){
- pWalker->u.i = 0;
+ if( pWalker->eCode==2 && ExprHasProperty(pExpr, EP_FromJoin) ){
+ pWalker->eCode = 0;
return WRC_Abort;
}
switch( pExpr->op ){
/* Consider functions to be constant if all their arguments are constant
- ** and either pWalker->u.i==3 or 4 or the function as the SQLITE_FUNC_CONST
- ** flag. */
+ ** and either pWalker->eCode==4 or 5 or the function has the
+ ** SQLITE_FUNC_CONST flag. */
case TK_FUNCTION:
- if( pWalker->u.i>=3 || ExprHasProperty(pExpr,EP_Constant) ){
+ if( pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc) ){
return WRC_Continue;
+ }else{
+ pWalker->eCode = 0;
+ return WRC_Abort;
}
- /* Fall through */
case TK_ID:
case TK_COLUMN:
case TK_AGG_FUNCTION:
testcase( pExpr->op==TK_COLUMN );
testcase( pExpr->op==TK_AGG_FUNCTION );
testcase( pExpr->op==TK_AGG_COLUMN );
- pWalker->u.i = 0;
- return WRC_Abort;
+ if( pWalker->eCode==3 && pExpr->iTable==pWalker->u.iCur ){
+ return WRC_Continue;
+ }else{
+ pWalker->eCode = 0;
+ return WRC_Abort;
+ }
case TK_VARIABLE:
- if( pWalker->u.i==4 ){
+ if( pWalker->eCode==5 ){
/* Silently convert bound parameters that appear inside of CREATE
** statements into a NULL when parsing the CREATE statement text out
** of the sqlite_master table */
pExpr->op = TK_NULL;
- }else if( pWalker->u.i==3 ){
+ }else if( pWalker->eCode==4 ){
/* A bound parameter in a CREATE statement that originates from
** sqlite3_prepare() causes an error */
- pWalker->u.i = 0;
+ pWalker->eCode = 0;
return WRC_Abort;
}
/* Fall through */
}
static int selectNodeIsConstant(Walker *pWalker, Select *NotUsed){
UNUSED_PARAMETER(NotUsed);
- pWalker->u.i = 0;
+ pWalker->eCode = 0;
return WRC_Abort;
}
-static int exprIsConst(Expr *p, int initFlag){
+static int exprIsConst(Expr *p, int initFlag, int iCur){
Walker w;
memset(&w, 0, sizeof(w));
- w.u.i = initFlag;
+ w.eCode = initFlag;
w.xExprCallback = exprNodeIsConstant;
w.xSelectCallback = selectNodeIsConstant;
+ w.u.iCur = iCur;
sqlite3WalkExpr(&w, p);
- return w.u.i;
+ return w.eCode;
}
/*
-** Walk an expression tree. Return 1 if the expression is constant
+** Walk an expression tree. Return non-zero if the expression is constant
** and 0 if it involves variables or function calls.
**
** For the purposes of this function, a double-quoted string (ex: "abc")
** a constant.
*/
SQLITE_PRIVATE int sqlite3ExprIsConstant(Expr *p){
- return exprIsConst(p, 1);
+ return exprIsConst(p, 1, 0);
}
/*
-** Walk an expression tree. Return 1 if the expression is constant
+** Walk an expression tree. Return non-zero if the expression is constant
** that does no originate from the ON or USING clauses of a join.
** Return 0 if it involves variables or function calls or terms from
** an ON or USING clause.
*/
SQLITE_PRIVATE int sqlite3ExprIsConstantNotJoin(Expr *p){
- return exprIsConst(p, 2);
+ return exprIsConst(p, 2, 0);
+}
+
+/*
+** Walk an expression tree. Return non-zero if the expression constant
+** for any single row of the table with cursor iCur. In other words, the
+** expression must not refer to any non-deterministic function nor any
+** table other than iCur.
+*/
+SQLITE_PRIVATE int sqlite3ExprIsTableConstant(Expr *p, int iCur){
+ return exprIsConst(p, 3, iCur);
}
/*
-** Walk an expression tree. Return 1 if the expression is constant
+** Walk an expression tree. Return non-zero if the expression is constant
** or a function call with constant arguments. Return and 0 if there
** are any variables.
**
*/
SQLITE_PRIVATE int sqlite3ExprIsConstantOrFunction(Expr *p, u8 isInit){
assert( isInit==0 || isInit==1 );
- return exprIsConst(p, 3+isInit);
+ return exprIsConst(p, 4+isInit, 0);
}
/*
return 0;
case TK_COLUMN:
assert( p->pTab!=0 );
- return p->iColumn>=0 && p->pTab->aCol[p->iColumn].notNull==0;
+ return ExprHasProperty(p, EP_CanBeNull) ||
+ (p->iColumn>=0 && p->pTab->aCol[p->iColumn].notNull==0);
default:
return 1;
}
assert( (pExpr->iTable&0x0000FFFF)==pExpr->iTable );
pSelect->iLimit = 0;
testcase( pSelect->selFlags & SF_Distinct );
- pSelect->selFlags &= ~SF_Distinct;
testcase( pKeyInfo==0 ); /* Caused by OOM in sqlite3KeyInfoAlloc() */
if( sqlite3Select(pParse, pSelect, &dest) ){
sqlite3KeyInfoUnref(pKeyInfo);
int idxLru;
struct yColCache *p;
- assert( iReg>0 ); /* Register numbers are always positive */
+ /* Unless an error has occurred, register numbers are always positive. */
+ assert( iReg>0 || pParse->nErr || pParse->db->mallocFailed );
assert( iCol>=-1 && iCol<32768 ); /* Finite column numbers */
/* The SQLITE_ColumnCache flag disables the column cache. This is used
#ifndef SQLITE_OMIT_FLOATING_POINT
/* If the column has REAL affinity, it may currently be stored as an
- ** integer. Use OP_RealAffinity to make sure it is really real. */
+ ** integer. Use OP_RealAffinity to make sure it is really real.
+ **
+ ** EVIDENCE-OF: R-60985-57662 SQLite will convert the value back to
+ ** floating point when extracting it from the record. */
if( pExpr->iColumn>=0
&& pTab->aCol[pExpr->iColumn].affinity==SQLITE_AFF_REAL
){
int i;
struct SrcCount *p = pWalker->u.pSrcCount;
SrcList *pSrc = p->pSrc;
- for(i=0; i<pSrc->nSrc; i++){
+ int nSrc = pSrc ? pSrc->nSrc : 0;
+ for(i=0; i<nSrc; i++){
if( pExpr->iTable==pSrc->a[i].iCursor ) break;
}
- if( i<pSrc->nSrc ){
+ if( i<nSrc ){
p->nThis++;
}else{
p->nOther++;
*/
if( pDflt ){
sqlite3_value *pVal = 0;
- if( sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_NONE, &pVal) ){
+ int rc;
+ rc = sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_NONE, &pVal);
+ assert( rc==SQLITE_OK || rc==SQLITE_NOMEM );
+ if( rc!=SQLITE_OK ){
db->mallocFailed = 1;
return;
}
p->mxSample = mxSample;
p->nPSample = (tRowcnt)(sqlite3_value_int64(argv[2])/(mxSample/3+1) + 1);
p->current.anLt = &p->current.anEq[nColUp];
- p->iPrn = nCol*0x689e962d ^ sqlite3_value_int(argv[2])*0xd0944565;
+ p->iPrn = 0x689e962d*(u32)nCol ^ 0xd0944565*(u32)sqlite3_value_int(argv[2]);
/* Set up the Stat4Accum.a[] and aBest[] arrays */
p->a = (struct Stat4Sample*)&p->current.anLt[nColUp];
if( *z==' ' ) z++;
}
#ifndef SQLITE_ENABLE_STAT3_OR_STAT4
- assert( pIndex!=0 );
+ assert( pIndex!=0 ); {
#else
- if( pIndex )
+ if( pIndex ){
#endif
- while( z[0] ){
- if( sqlite3_strglob("unordered*", z)==0 ){
- pIndex->bUnordered = 1;
- }else if( sqlite3_strglob("sz=[0-9]*", z)==0 ){
- pIndex->szIdxRow = sqlite3LogEst(sqlite3Atoi(z+3));
- }
+ pIndex->bUnordered = 0;
+ pIndex->noSkipScan = 0;
+ while( z[0] ){
+ if( sqlite3_strglob("unordered*", z)==0 ){
+ pIndex->bUnordered = 1;
+ }else if( sqlite3_strglob("sz=[0-9]*", z)==0 ){
+ pIndex->szIdxRow = sqlite3LogEst(sqlite3Atoi(z+3));
+ }else if( sqlite3_strglob("noskipscan*", z)==0 ){
+ pIndex->noSkipScan = 1;
+ }
#ifdef SQLITE_ENABLE_COSTMULT
- else if( sqlite3_strglob("costmult=[0-9]*",z)==0 ){
- pIndex->pTable->costMult = sqlite3LogEst(sqlite3Atoi(z+9));
- }
+ else if( sqlite3_strglob("costmult=[0-9]*",z)==0 ){
+ pIndex->pTable->costMult = sqlite3LogEst(sqlite3Atoi(z+9));
+ }
#endif
- while( z[0]!=0 && z[0]!=' ' ) z++;
- while( z[0]==' ' ) z++;
+ while( z[0]!=0 && z[0]!=' ' ) z++;
+ while( z[0]==' ' ) z++;
+ }
}
}
i64 nSum100 = 0; /* Number of terms contributing to sumEq */
i64 nDist100; /* Number of distinct values in index */
- if( pIdx->aiRowEst==0 || pIdx->aiRowEst[iCol+1]==0 ){
+ if( !pIdx->aiRowEst || iCol>=pIdx->nKeyCol || pIdx->aiRowEst[iCol+1]==0 ){
nRow = pFinal->anLt[iCol];
nDist100 = (i64)100 * pFinal->anDLt[iCol];
nSample--;
nRow = pIdx->aiRowEst[0];
nDist100 = ((i64)100 * pIdx->aiRowEst[0]) / pIdx->aiRowEst[iCol+1];
}
+ pIdx->nRowEst0 = nRow;
/* Set nSum to the number of distinct (iCol+1) field prefixes that
** occur in the stat4 table for this index. Set sumEq to the sum of
/* Load the statistics from the sqlite_stat4 table. */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
- if( rc==SQLITE_OK ){
+ if( rc==SQLITE_OK && OptimizationEnabled(db, SQLITE_Stat34) ){
int lookasideEnabled = db->lookaside.bEnabled;
db->lookaside.bEnabled = 0;
rc = loadStat4(db, sInfo.zDatabase);
"attached databases must use the same text encoding as main database");
rc = SQLITE_ERROR;
}
+ sqlite3BtreeEnter(aNew->pBt);
pPager = sqlite3BtreePager(aNew->pBt);
sqlite3PagerLockingMode(pPager, db->dfltLockMode);
sqlite3BtreeSecureDelete(aNew->pBt,
#ifndef SQLITE_OMIT_PAGER_PRAGMAS
sqlite3BtreeSetPagerFlags(aNew->pBt, 3 | (db->flags & PAGER_FLAGS_MASK));
#endif
+ sqlite3BtreeLeave(aNew->pBt);
}
aNew->safety_level = 3;
aNew->zName = sqlite3DbStrDup(db, zName);
case SQLITE_NULL:
/* No key specified. Use the key from the main database */
sqlite3CodecGetKey(db, 0, (void**)&zKey, &nKey);
- if( nKey>0 || sqlite3BtreeGetReserve(db->aDb[0].pBt)>0 ){
+ if( nKey>0 || sqlite3BtreeGetOptimalReserve(db->aDb[0].pBt)>0 ){
rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey);
}
break;
** Setting the auth function to NULL disables this hook. The default
** setting of the auth function is NULL.
*/
-SQLITE_API int sqlite3_set_authorizer(
+SQLITE_API int SQLITE_STDCALL sqlite3_set_authorizer(
sqlite3 *db,
int (*xAuth)(void*,int,const char*,const char*,const char*,const char*),
void *pArg
){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(db->mutex);
db->xAuth = (sqlite3_xauth)xAuth;
db->pAuthArg = pArg;
SQLITE_PRIVATE Table *sqlite3FindTable(sqlite3 *db, const char *zName, const char *zDatabase){
Table *p = 0;
int i;
- assert( zName!=0 );
+
/* All mutexes are required for schema access. Make sure we hold them. */
assert( zDatabase!=0 || sqlite3BtreeHoldsAllMutexes(db) );
#if SQLITE_USER_AUTHENTICATION
#ifndef SQLITE_OMIT_ANALYZE
sqlite3DeleteIndexSamples(db, p);
#endif
- if( db==0 || db->pnBytesFreed==0 ) sqlite3KeyInfoUnref(p->pKeyInfo);
sqlite3ExprDelete(db, p->pPartIdxWhere);
sqlite3DbFree(db, p->zColAff);
if( p->isResized ) sqlite3DbFree(db, p->azColl);
pTab->iPKey = -1;
}else{
pPk = sqlite3PrimaryKeyIndex(pTab);
+ /*
+ ** Remove all redundant columns from the PRIMARY KEY. For example, change
+ ** "PRIMARY KEY(a,b,a,b,c,b,c,d)" into just "PRIMARY KEY(a,b,c,d)". Later
+ ** code assumes the PRIMARY KEY contains no repeated columns.
+ */
+ for(i=j=1; i<pPk->nKeyCol; i++){
+ if( hasColumn(pPk->aiColumn, j, pPk->aiColumn[i]) ){
+ pPk->nColumn--;
+ }else{
+ pPk->aiColumn[j++] = pPk->aiColumn[i];
+ }
+ }
+ pPk->nKeyCol = j;
}
pPk->isCovering = 1;
assert( pPk!=0 );
nPk = pPk->nKeyCol;
- /* Make sure every column of the PRIMARY KEY is NOT NULL */
- for(i=0; i<nPk; i++){
- pTab->aCol[pPk->aiColumn[i]].notNull = 1;
+ /* Make sure every column of the PRIMARY KEY is NOT NULL. (Except,
+ ** do not enforce this for imposter tables.) */
+ if( !db->init.imposterTable ){
+ for(i=0; i<nPk; i++){
+ pTab->aCol[pPk->aiColumn[i]].notNull = 1;
+ }
+ pPk->uniqNotNull = 1;
}
- pPk->uniqNotNull = 1;
/* The root page of the PRIMARY KEY is the table root page */
pPk->tnum = pTab->tnum;
pIdx->onError = pIndex->onError;
}
}
+ pRet = pIdx;
goto exit_create_index;
}
}
** when it has finished using it.
*/
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoOfIndex(Parse *pParse, Index *pIdx){
+ int i;
+ int nCol = pIdx->nColumn;
+ int nKey = pIdx->nKeyCol;
+ KeyInfo *pKey;
if( pParse->nErr ) return 0;
-#ifndef SQLITE_OMIT_SHARED_CACHE
- if( pIdx->pKeyInfo && pIdx->pKeyInfo->db!=pParse->db ){
- sqlite3KeyInfoUnref(pIdx->pKeyInfo);
- pIdx->pKeyInfo = 0;
+ if( pIdx->uniqNotNull ){
+ pKey = sqlite3KeyInfoAlloc(pParse->db, nKey, nCol-nKey);
+ }else{
+ pKey = sqlite3KeyInfoAlloc(pParse->db, nCol, 0);
}
-#endif
- if( pIdx->pKeyInfo==0 ){
- int i;
- int nCol = pIdx->nColumn;
- int nKey = pIdx->nKeyCol;
- KeyInfo *pKey;
- if( pIdx->uniqNotNull ){
- pKey = sqlite3KeyInfoAlloc(pParse->db, nKey, nCol-nKey);
- }else{
- pKey = sqlite3KeyInfoAlloc(pParse->db, nCol, 0);
+ if( pKey ){
+ assert( sqlite3KeyInfoIsWriteable(pKey) );
+ for(i=0; i<nCol; i++){
+ char *zColl = pIdx->azColl[i];
+ assert( zColl!=0 );
+ pKey->aColl[i] = strcmp(zColl,"BINARY")==0 ? 0 :
+ sqlite3LocateCollSeq(pParse, zColl);
+ pKey->aSortOrder[i] = pIdx->aSortOrder[i];
}
- if( pKey ){
- assert( sqlite3KeyInfoIsWriteable(pKey) );
- for(i=0; i<nCol; i++){
- char *zColl = pIdx->azColl[i];
- assert( zColl!=0 );
- pKey->aColl[i] = strcmp(zColl,"BINARY")==0 ? 0 :
- sqlite3LocateCollSeq(pParse, zColl);
- pKey->aSortOrder[i] = pIdx->aSortOrder[i];
- }
- if( pParse->nErr ){
- sqlite3KeyInfoUnref(pKey);
- }else{
- pIdx->pKeyInfo = pKey;
- }
+ if( pParse->nErr ){
+ sqlite3KeyInfoUnref(pKey);
+ pKey = 0;
}
}
- return sqlite3KeyInfoRef(pIdx->pKeyInfo);
+ return pKey;
}
#ifndef SQLITE_OMIT_CTE
pInClause->x.pSelect = pSelect;
pInClause->flags |= EP_xIsSelect;
- sqlite3ExprSetHeight(pParse, pInClause);
+ sqlite3ExprSetHeightAndFlags(pParse, pInClause);
return pInClause;
/* something went wrong. clean up anything allocated. */
WhereInfo *pWInfo; /* Information about the WHERE clause */
Index *pIdx; /* For looping over indices of the table */
int iTabCur; /* Cursor number for the table */
- int iDataCur; /* VDBE cursor for the canonical data source */
- int iIdxCur; /* Cursor number of the first index */
+ int iDataCur = 0; /* VDBE cursor for the canonical data source */
+ int iIdxCur = 0; /* Cursor number of the first index */
int nIdx; /* Number of indices */
sqlite3 *db; /* Main database structure */
AuthContext sContext; /* Authorization context */
assert( nKey==nPk ); /* OP_Found will use an unpacked key */
assert( !IsVirtual(pTab) );
if( aToOpen[iDataCur-iTabCur] ){
- assert( pPk!=0 );
+ assert( pPk!=0 || pTab->pSelect!=0 );
sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, addrBypass, iKey, nKey);
VdbeCoverage(v);
}
** Return the collating function associated with a function.
*/
static CollSeq *sqlite3GetFuncCollSeq(sqlite3_context *context){
- VdbeOp *pOp = &context->pVdbe->aOp[context->iOp-1];
+ VdbeOp *pOp;
+ assert( context->pVdbe!=0 );
+ pOp = &context->pVdbe->aOp[context->iOp-1];
assert( pOp->opcode==OP_CollSeq );
assert( pOp->p4type==P4_COLLSEQ );
return pOp->p4.pColl;
default: {
/* Because sqlite3_value_double() returns 0.0 if the argument is not
** something that can be converted into a number, we have:
- ** IMP: R-57326-31541 Abs(X) return 0.0 if X is a string or blob that
- ** cannot be converted to a numeric value.
+ ** IMP: R-01992-00519 Abs(X) returns 0.0 if X is a string or blob
+ ** that cannot be converted to a numeric value.
*/
double rVal = sqlite3_value_double(argv[0]);
if( rVal<0 ) rVal = -rVal;
}
}
}
+#ifdef SQLITE_SUBSTR_COMPATIBILITY
+ /* If SUBSTR_COMPATIBILITY is defined then substr(X,0,N) work the same as
+ ** as substr(X,1,N) - it returns the first N characters of X. This
+ ** is essentially a back-out of the bug-fix in check-in [5fc125d362df4b8]
+ ** from 2009-02-02 for compatibility of applications that exploited the
+ ** old buggy behavior. */
+ if( p1==0 ) p1 = 1; /* <rdar://problem/6778339> */
+#endif
if( argc==3 ){
p2 = sqlite3_value_int(argv[2]);
if( p2<0 ){
/*
** The sqlite3_strglob() interface.
*/
-SQLITE_API int sqlite3_strglob(const char *zGlobPattern, const char *zString){
+SQLITE_API int SQLITE_STDCALL sqlite3_strglob(const char *zGlobPattern, const char *zString){
return patternCompare((u8*)zGlobPattern, (u8*)zString, &globInfo, 0)==0;
}
** then set aWc[0] through aWc[2] to the wildcard characters and
** return TRUE. If the function is not a LIKE-style function then
** return FALSE.
+**
+** *pIsNocase is set to true if uppercase and lowercase are equivalent for
+** the function (default for LIKE). If the function makes the distinction
+** between uppercase and lowercase (as does GLOB) then *pIsNocase is set to
+** false.
*/
SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocase, char *aWc){
FuncDef *pDef;
OE_Abort, 0, P4_STATIC, P5_ConstraintFK);
}else{
if( nIncr>0 && pFKey->isDeferred==0 ){
- sqlite3ParseToplevel(pParse)->mayAbort = 1;
+ sqlite3MayAbort(pParse);
}
sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, nIncr);
}
** code for an SQL UPDATE operation, this function may be called twice -
** once to "delete" the old row and once to "insert" the new row.
**
+** Parameter nIncr is passed -1 when inserting a row (as this may decrease
+** the number of FK violations in the db) or +1 when deleting one (as this
+** may increase the number of FK constraint problems).
+**
** The code generated by this function scans through the rows in the child
** table that correspond to the parent table row being deleted or inserted.
** For each child row found, one of the following actions is taken:
sqlite3ResolveExprNames(&sNameContext, pWhere);
/* Create VDBE to loop through the entries in pSrc that match the WHERE
- ** clause. If the constraint is not deferred, throw an exception for
- ** each row found. Otherwise, for deferred constraints, increment the
- ** deferred constraint counter by nIncr for each row selected. */
+ ** clause. For each row found, increment either the deferred or immediate
+ ** foreign key constraint counter. */
pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0, 0, 0, 0);
- if( nIncr>0 && pFKey->isDeferred==0 ){
- sqlite3ParseToplevel(pParse)->mayAbort = 1;
- }
sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, nIncr);
if( pWInfo ){
sqlite3WhereEnd(pWInfo);
return 0;
}
+/*
+** Return true if the parser passed as the first argument is being
+** used to code a trigger that is really a "SET NULL" action belonging
+** to trigger pFKey.
+*/
+static int isSetNullAction(Parse *pParse, FKey *pFKey){
+ Parse *pTop = sqlite3ParseToplevel(pParse);
+ if( pTop->pTriggerPrg ){
+ Trigger *p = pTop->pTriggerPrg->pTrigger;
+ if( (p==pFKey->apTrigger[0] && pFKey->aAction[0]==OE_SetNull)
+ || (p==pFKey->apTrigger[1] && pFKey->aAction[1]==OE_SetNull)
+ ){
+ return 1;
+ }
+ }
+ return 0;
+}
+
/*
** This function is called when inserting, deleting or updating a row of
** table pTab to generate VDBE code to perform foreign key constraint
int *aiCol;
int iCol;
int i;
- int isIgnore = 0;
+ int bIgnore = 0;
if( aChange
&& sqlite3_stricmp(pTab->zName, pFKey->zTo)!=0
int rcauth;
char *zCol = pTo->aCol[pIdx ? pIdx->aiColumn[i] : pTo->iPKey].zName;
rcauth = sqlite3AuthReadCol(pParse, pTo->zName, zCol, iDb);
- isIgnore = (rcauth==SQLITE_IGNORE);
+ bIgnore = (rcauth==SQLITE_IGNORE);
}
#endif
}
/* A row is being removed from the child table. Search for the parent.
** If the parent does not exist, removing the child row resolves an
** outstanding foreign key constraint violation. */
- fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regOld, -1,isIgnore);
+ fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regOld, -1, bIgnore);
}
- if( regNew!=0 ){
+ if( regNew!=0 && !isSetNullAction(pParse, pFKey) ){
/* A row is being added to the child table. If a parent row cannot
- ** be found, adding the child row has violated the FK constraint. */
- fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regNew, +1,isIgnore);
+ ** be found, adding the child row has violated the FK constraint.
+ **
+ ** If this operation is being performed as part of a trigger program
+ ** that is actually a "SET NULL" action belonging to this very
+ ** foreign key, then omit this scan altogether. As all child key
+ ** values are guaranteed to be NULL, it is not possible for adding
+ ** this row to cause an FK violation. */
+ fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regNew, +1, bIgnore);
}
sqlite3DbFree(db, aiFree);
&& !pParse->pToplevel && !pParse->isMultiWrite
){
assert( regOld==0 && regNew!=0 );
- /* Inserting a single row into a parent table cannot cause an immediate
- ** foreign key violation. So do nothing in this case. */
+ /* Inserting a single row into a parent table cannot cause (or fix)
+ ** an immediate foreign key violation. So do nothing in this case. */
continue;
}
fkScanChildren(pParse, pSrc, pTab, pIdx, pFKey, aiCol, regNew, -1);
}
if( regOld!=0 ){
- /* If there is a RESTRICT action configured for the current operation
- ** on the parent table of this FK, then throw an exception
- ** immediately if the FK constraint is violated, even if this is a
- ** deferred trigger. That's what RESTRICT means. To defer checking
- ** the constraint, the FK should specify NO ACTION (represented
- ** using OE_None). NO ACTION is the default. */
+ int eAction = pFKey->aAction[aChange!=0];
fkScanChildren(pParse, pSrc, pTab, pIdx, pFKey, aiCol, regOld, 1);
+ /* If this is a deferred FK constraint, or a CASCADE or SET NULL
+ ** action applies, then any foreign key violations caused by
+ ** removing the parent key will be rectified by the action trigger.
+ ** So do not set the "may-abort" flag in this case.
+ **
+ ** Note 1: If the FK is declared "ON UPDATE CASCADE", then the
+ ** may-abort flag will eventually be set on this statement anyway
+ ** (when this function is called as part of processing the UPDATE
+ ** within the action trigger).
+ **
+ ** Note 2: At first glance it may seem like SQLite could simply omit
+ ** all OP_FkCounter related scans when either CASCADE or SET NULL
+ ** applies. The trouble starts if the CASCADE or SET NULL action
+ ** trigger causes other triggers or action rules attached to the
+ ** child table to fire. In these cases the fk constraint counters
+ ** might be set incorrectly if any OP_FkCounter related scans are
+ ** omitted. */
+ if( !pFKey->isDeferred && eAction!=OE_Cascade && eAction!=OE_SetNull ){
+ sqlite3MayAbort(pParse);
+ }
}
pItem->zName = 0;
sqlite3SrcListDelete(db, pSrc);
** argument to xCallback(). If xCallback=NULL then no callback
** is invoked, even for queries.
*/
-SQLITE_API int sqlite3_exec(
+SQLITE_API int SQLITE_STDCALL sqlite3_exec(
sqlite3 *db, /* The database on which the SQL executes */
const char *zSql, /* The SQL to be executed */
sqlite3_callback xCallback, /* Invoke this callback routine */
# define sqlite3_column_table_name16 0
# define sqlite3_column_origin_name 0
# define sqlite3_column_origin_name16 0
-# define sqlite3_table_column_metadata 0
#endif
#ifdef SQLITE_OMIT_AUTHORIZATION
db->aExtension[db->nExtension++] = handle;
return SQLITE_OK;
}
-SQLITE_API int sqlite3_load_extension(
+SQLITE_API int SQLITE_STDCALL sqlite3_load_extension(
sqlite3 *db, /* Load the extension into this database connection */
const char *zFile, /* Name of the shared library containing extension */
const char *zProc, /* Entry point. Use "sqlite3_extension_init" if 0 */
** Enable or disable extension loading. Extension loading is disabled by
** default so as not to open security holes in older applications.
*/
-SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff){
+SQLITE_API int SQLITE_STDCALL sqlite3_enable_load_extension(sqlite3 *db, int onoff){
sqlite3_mutex_enter(db->mutex);
if( onoff ){
db->flags |= SQLITE_LoadExtension;
** Register a statically linked extension that is automatically
** loaded by every new database connection.
*/
-SQLITE_API int sqlite3_auto_extension(void (*xInit)(void)){
+SQLITE_API int SQLITE_STDCALL sqlite3_auto_extension(void (*xInit)(void)){
int rc = SQLITE_OK;
#ifndef SQLITE_OMIT_AUTOINIT
rc = sqlite3_initialize();
** Return 1 if xInit was found on the list and removed. Return 0 if xInit
** was not on the list.
*/
-SQLITE_API int sqlite3_cancel_auto_extension(void (*xInit)(void)){
+SQLITE_API int SQLITE_STDCALL sqlite3_cancel_auto_extension(void (*xInit)(void)){
#if SQLITE_THREADSAFE
sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
#endif
/*
** Reset the automatic extension loading mechanism.
*/
-SQLITE_API void sqlite3_reset_auto_extension(void){
+SQLITE_API void SQLITE_STDCALL sqlite3_reset_auto_extension(void){
#ifndef SQLITE_OMIT_AUTOINIT
if( sqlite3_initialize()==SQLITE_OK )
#endif
#endif
/***************************************************************************
-** The next block of code, including the PragTyp_XXXX macro definitions and
-** the aPragmaName[] object is composed of generated code. DO NOT EDIT.
-**
-** To add new pragmas, edit the code in ../tool/mkpragmatab.tcl and rerun
-** that script. Then copy/paste the output in place of the following:
+** The "pragma.h" include file is an automatically generated file that
+** that includes the PragType_XXXX macro definitions and the aPragmaName[]
+** object. This ensures that the aPragmaName[] table is arranged in
+** lexicographical order to facility a binary search of the pragma name.
+** Do not edit pragma.h directly. Edit and rerun the script in at
+** ../tool/mkpragmatab.tcl. */
+/************** Include pragma.h in the middle of pragma.c *******************/
+/************** Begin file pragma.h ******************************************/
+/* DO NOT EDIT!
+** This file is automatically generated by the script at
+** ../tool/mkpragmatab.tcl. To update the set of pragmas, edit
+** that script and rerun it.
*/
#define PragTyp_HEADER_VALUE 0
#define PragTyp_AUTO_VACUUM 1
#define PragTyp_LOCK_STATUS 40
#define PragTyp_PARSER_TRACE 41
#define PragFlag_NeedSchema 0x01
+#define PragFlag_ReadOnly 0x02
static const struct sPragmaNames {
const char *const zName; /* Name of pragma */
u8 ePragTyp; /* PragTyp_XXX value */
{ /* zName: */ "application_id",
/* ePragTyp: */ PragTyp_HEADER_VALUE,
/* ePragFlag: */ 0,
- /* iArg: */ 0 },
+ /* iArg: */ BTREE_APPLICATION_ID },
#endif
#if !defined(SQLITE_OMIT_AUTOVACUUM)
{ /* zName: */ "auto_vacuum",
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
+#if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)
+ { /* zName: */ "data_version",
+ /* ePragTyp: */ PragTyp_HEADER_VALUE,
+ /* ePragFlag: */ PragFlag_ReadOnly,
+ /* iArg: */ BTREE_DATA_VERSION },
+#endif
#if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS)
{ /* zName: */ "database_list",
/* ePragTyp: */ PragTyp_DATABASE_LIST,
#if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)
{ /* zName: */ "freelist_count",
/* ePragTyp: */ PragTyp_HEADER_VALUE,
- /* ePragFlag: */ 0,
- /* iArg: */ 0 },
+ /* ePragFlag: */ PragFlag_ReadOnly,
+ /* iArg: */ BTREE_FREE_PAGE_COUNT },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "full_column_names",
/* ePragTyp: */ PragTyp_INDEX_LIST,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
+ { /* zName: */ "index_xinfo",
+ /* ePragTyp: */ PragTyp_INDEX_INFO,
+ /* ePragFlag: */ PragFlag_NeedSchema,
+ /* iArg: */ 1 },
#endif
#if !defined(SQLITE_OMIT_INTEGRITY_CHECK)
{ /* zName: */ "integrity_check",
{ /* zName: */ "schema_version",
/* ePragTyp: */ PragTyp_HEADER_VALUE,
/* ePragFlag: */ 0,
- /* iArg: */ 0 },
+ /* iArg: */ BTREE_SCHEMA_VERSION },
#endif
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
{ /* zName: */ "secure_delete",
{ /* zName: */ "user_version",
/* ePragTyp: */ PragTyp_HEADER_VALUE,
/* ePragFlag: */ 0,
- /* iArg: */ 0 },
+ /* iArg: */ BTREE_USER_VERSION },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
#if defined(SQLITE_DEBUG)
/* iArg: */ SQLITE_WriteSchema|SQLITE_RecoveryMode },
#endif
};
-/* Number of pragmas: 57 on by default, 70 total. */
-/* End of the automatically generated pragma table.
-***************************************************************************/
+/* Number of pragmas: 59 on by default, 72 total. */
+
+/************** End of pragma.h **********************************************/
+/************** Continuing where we left off in pragma.c *********************/
/*
** Interpret the given string as a safety level. Return 0 for OFF,
Token *pId; /* Pointer to <id> token */
char *aFcntl[4]; /* Argument to SQLITE_FCNTL_PRAGMA */
int iDb; /* Database index for <database> */
- int lwr, upr, mid; /* Binary search bounds */
+ int lwr, upr, mid = 0; /* Binary search bounds */
int rc; /* return value form SQLITE_FCNTL_PRAGMA */
sqlite3 *db = pParse->db; /* The database connection */
Db *pDb; /* The specific database being pragmaed */
Vdbe *v = sqlite3GetVdbe(pParse); /* Prepared statement */
+ const struct sPragmaNames *pPragma;
if( v==0 ) return;
sqlite3VdbeRunOnlyOnce(v);
/* Send an SQLITE_FCNTL_PRAGMA file-control to the underlying VFS
** connection. If it returns SQLITE_OK, then assume that the VFS
** handled the pragma and generate a no-op prepared statement.
+ **
+ ** IMPLEMENTATION-OF: R-12238-55120 Whenever a PRAGMA statement is parsed,
+ ** an SQLITE_FCNTL_PRAGMA file control is sent to the open sqlite3_file
+ ** object corresponding to the database file to which the pragma
+ ** statement refers.
+ **
+ ** IMPLEMENTATION-OF: R-29875-31678 The argument to the SQLITE_FCNTL_PRAGMA
+ ** file control is an array of pointers to strings (char**) in which the
+ ** second element of the array is the name of the pragma and the third
+ ** element is the argument to the pragma or NULL if the pragma has no
+ ** argument.
*/
aFcntl[0] = 0;
aFcntl[1] = zLeft;
}
}
if( lwr>upr ) goto pragma_out;
+ pPragma = &aPragmaNames[mid];
/* Make sure the database schema is loaded if the pragma requires that */
- if( (aPragmaNames[mid].mPragFlag & PragFlag_NeedSchema)!=0 ){
+ if( (pPragma->mPragFlag & PragFlag_NeedSchema)!=0 ){
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
}
/* Jump to the appropriate pragma handler */
- switch( aPragmaNames[mid].ePragTyp ){
+ switch( pPragma->ePragTyp ){
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && !defined(SQLITE_OMIT_DEPRECATED)
/*
#ifndef SQLITE_OMIT_FLAG_PRAGMAS
case PragTyp_FLAG: {
if( zRight==0 ){
- returnSingleInt(pParse, aPragmaNames[mid].zName,
- (db->flags & aPragmaNames[mid].iArg)!=0 );
+ returnSingleInt(pParse, pPragma->zName, (db->flags & pPragma->iArg)!=0 );
}else{
- int mask = aPragmaNames[mid].iArg; /* Mask of bits to set or clear. */
+ int mask = pPragma->iArg; /* Mask of bits to set or clear. */
if( db->autoCommit==0 ){
/* Foreign key support may not be enabled or disabled while not
** in auto-commit mode. */
pIdx = sqlite3FindIndex(db, zRight, zDb);
if( pIdx ){
int i;
+ int mx;
+ if( pPragma->iArg ){
+ /* PRAGMA index_xinfo (newer version with more rows and columns) */
+ mx = pIdx->nColumn;
+ pParse->nMem = 6;
+ }else{
+ /* PRAGMA index_info (legacy version) */
+ mx = pIdx->nKeyCol;
+ pParse->nMem = 3;
+ }
pTab = pIdx->pTable;
- sqlite3VdbeSetNumCols(v, 3);
- pParse->nMem = 3;
+ sqlite3VdbeSetNumCols(v, pParse->nMem);
sqlite3CodeVerifySchema(pParse, iDb);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seqno", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "cid", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "name", SQLITE_STATIC);
- for(i=0; i<pIdx->nKeyCol; i++){
+ if( pPragma->iArg ){
+ sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "desc", SQLITE_STATIC);
+ sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "coll", SQLITE_STATIC);
+ sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "key", SQLITE_STATIC);
+ }
+ for(i=0; i<mx; i++){
i16 cnum = pIdx->aiColumn[i];
sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
sqlite3VdbeAddOp2(v, OP_Integer, cnum, 2);
- assert( pTab->nCol>cnum );
- sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pTab->aCol[cnum].zName, 0);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
+ if( cnum<0 ){
+ sqlite3VdbeAddOp2(v, OP_Null, 0, 3);
+ }else{
+ sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pTab->aCol[cnum].zName, 0);
+ }
+ if( pPragma->iArg ){
+ sqlite3VdbeAddOp2(v, OP_Integer, pIdx->aSortOrder[i], 4);
+ sqlite3VdbeAddOp4(v, OP_String8, 0, 5, 0, pIdx->azColl[i], 0);
+ sqlite3VdbeAddOp2(v, OP_Integer, i<pIdx->nKeyCol, 6);
+ }
+ sqlite3VdbeAddOp2(v, OP_ResultRow, 1, pParse->nMem);
}
}
}
pTab = sqlite3FindTable(db, zRight, zDb);
if( pTab ){
v = sqlite3GetVdbe(pParse);
- sqlite3VdbeSetNumCols(v, 3);
- pParse->nMem = 3;
+ sqlite3VdbeSetNumCols(v, 5);
+ pParse->nMem = 5;
sqlite3CodeVerifySchema(pParse, iDb);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "unique", SQLITE_STATIC);
+ sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "origin", SQLITE_STATIC);
+ sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "partial", SQLITE_STATIC);
for(pIdx=pTab->pIndex, i=0; pIdx; pIdx=pIdx->pNext, i++){
+ const char *azOrigin[] = { "c", "u", "pk" };
sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pIdx->zName, 0);
sqlite3VdbeAddOp2(v, OP_Integer, IsUniqueIndex(pIdx), 3);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
+ sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0, azOrigin[pIdx->idxType], 0);
+ sqlite3VdbeAddOp2(v, OP_Integer, pIdx->pPartIdxWhere!=0, 5);
+ sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 5);
}
}
}
){
for(pEnc=&encnames[0]; pEnc->zName; pEnc++){
if( 0==sqlite3StrICmp(zRight, pEnc->zName) ){
- ENC(pParse->db) = pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE;
+ SCHEMA_ENC(db) = ENC(db) =
+ pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE;
break;
}
}
** applications for any purpose.
*/
case PragTyp_HEADER_VALUE: {
- int iCookie; /* Cookie index. 1 for schema-cookie, 6 for user-cookie. */
+ int iCookie = pPragma->iArg; /* Which cookie to read or write */
sqlite3VdbeUsesBtree(v, iDb);
- switch( zLeft[0] ){
- case 'a': case 'A':
- iCookie = BTREE_APPLICATION_ID;
- break;
- case 'f': case 'F':
- iCookie = BTREE_FREE_PAGE_COUNT;
- break;
- case 's': case 'S':
- iCookie = BTREE_SCHEMA_VERSION;
- break;
- default:
- iCookie = BTREE_USER_VERSION;
- break;
- }
-
- if( zRight && iCookie!=BTREE_FREE_PAGE_COUNT ){
+ if( zRight && (pPragma->mPragFlag & PragFlag_ReadOnly)==0 ){
/* Write the specified cookie value */
static const VdbeOpList setCookie[] = {
{ OP_Transaction, 0, 1, 0}, /* 0 */
#ifndef SQLITE_OMIT_WAL
/*
- ** PRAGMA [database.]wal_checkpoint = passive|full|restart
+ ** PRAGMA [database.]wal_checkpoint = passive|full|restart|truncate
**
** Checkpoint the database.
*/
eMode = SQLITE_CHECKPOINT_FULL;
}else if( sqlite3StrICmp(zRight, "restart")==0 ){
eMode = SQLITE_CHECKPOINT_RESTART;
+ }else if( sqlite3StrICmp(zRight, "truncate")==0 ){
+ eMode = SQLITE_CHECKPOINT_TRUNCATE;
}
}
sqlite3VdbeSetNumCols(v, 3);
/*
** PRAGMA shrink_memory
**
- ** This pragma attempts to free as much memory as possible from the
- ** current database connection.
+ ** IMPLEMENTATION-OF: R-23445-46109 This pragma causes the database
+ ** connection on which it is invoked to free up as much memory as it
+ ** can, by calling sqlite3_db_release_memory().
*/
case PragTyp_SHRINK_MEMORY: {
sqlite3_db_release_memory(db);
** disables the timeout.
*/
/*case PragTyp_BUSY_TIMEOUT*/ default: {
- assert( aPragmaNames[mid].ePragTyp==PragTyp_BUSY_TIMEOUT );
+ assert( pPragma->ePragTyp==PragTyp_BUSY_TIMEOUT );
if( zRight ){
sqlite3_busy_timeout(db, sqlite3Atoi(zRight));
}
** PRAGMA soft_heap_limit
** PRAGMA soft_heap_limit = N
**
- ** Call sqlite3_soft_heap_limit64(N). Return the result. If N is omitted,
- ** use -1.
+ ** IMPLEMENTATION-OF: R-26343-45930 This pragma invokes the
+ ** sqlite3_soft_heap_limit64() interface with the argument N, if N is
+ ** specified and is a non-negative integer.
+ ** IMPLEMENTATION-OF: R-64451-07163 The soft_heap_limit pragma always
+ ** returns the same integer that would be returned by the
+ ** sqlite3_soft_heap_limit64(-1) C-language function.
*/
case PragTyp_SOFT_HEAP_LIMIT: {
sqlite3_int64 N;
int commit_internal = !(db->flags&SQLITE_InternChanges);
assert( sqlite3_mutex_held(db->mutex) );
+ assert( sqlite3BtreeHoldsMutex(db->aDb[0].pBt) );
assert( db->init.busy==0 );
rc = SQLITE_OK;
db->init.busy = 1;
+ ENC(db) = SCHEMA_ENC(db);
for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
if( DbHasProperty(db, i, DB_SchemaLoaded) || i==1 ) continue;
rc = sqlite3InitOne(db, i, pzErrMsg);
const char **pzTail /* OUT: End of parsed string */
){
int rc;
- assert( ppStmt!=0 );
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( ppStmt==0 ) return SQLITE_MISUSE_BKPT;
+#endif
*ppStmt = 0;
- if( !sqlite3SafetyCheckOk(db) ){
+ if( !sqlite3SafetyCheckOk(db)||zSql==0 ){
return SQLITE_MISUSE_BKPT;
}
sqlite3_mutex_enter(db->mutex);
** and the statement is automatically recompiled if an schema change
** occurs.
*/
-SQLITE_API int sqlite3_prepare(
+SQLITE_API int SQLITE_STDCALL sqlite3_prepare(
sqlite3 *db, /* Database handle. */
const char *zSql, /* UTF-8 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
assert( rc==SQLITE_OK || ppStmt==0 || *ppStmt==0 ); /* VERIFY: F13021 */
return rc;
}
-SQLITE_API int sqlite3_prepare_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_prepare_v2(
sqlite3 *db, /* Database handle. */
const char *zSql, /* UTF-8 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
const char *zTail8 = 0;
int rc = SQLITE_OK;
- assert( ppStmt );
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( ppStmt==0 ) return SQLITE_MISUSE_BKPT;
+#endif
*ppStmt = 0;
- if( !sqlite3SafetyCheckOk(db) ){
+ if( !sqlite3SafetyCheckOk(db)||zSql==0 ){
return SQLITE_MISUSE_BKPT;
}
if( nBytes>=0 ){
** and the statement is automatically recompiled if an schema change
** occurs.
*/
-SQLITE_API int sqlite3_prepare16(
+SQLITE_API int SQLITE_STDCALL sqlite3_prepare16(
sqlite3 *db, /* Database handle. */
const void *zSql, /* UTF-16 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
assert( rc==SQLITE_OK || ppStmt==0 || *ppStmt==0 ); /* VERIFY: F13021 */
return rc;
}
-SQLITE_API int sqlite3_prepare16_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_prepare16_v2(
sqlite3 *db, /* Database handle. */
const void *zSql, /* UTF-16 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
#define SORTFLAG_UseSorter 0x01 /* Use SorterOpen instead of OpenEphemeral */
/*
-** Delete all the content of a Select structure but do not deallocate
-** the select structure itself.
+** Delete all the content of a Select structure. Deallocate the structure
+** itself only if bFree is true.
*/
-static void clearSelect(sqlite3 *db, Select *p){
- sqlite3ExprListDelete(db, p->pEList);
- sqlite3SrcListDelete(db, p->pSrc);
- sqlite3ExprDelete(db, p->pWhere);
- sqlite3ExprListDelete(db, p->pGroupBy);
- sqlite3ExprDelete(db, p->pHaving);
- sqlite3ExprListDelete(db, p->pOrderBy);
- sqlite3SelectDelete(db, p->pPrior);
- sqlite3ExprDelete(db, p->pLimit);
- sqlite3ExprDelete(db, p->pOffset);
- sqlite3WithDelete(db, p->pWith);
+static void clearSelect(sqlite3 *db, Select *p, int bFree){
+ while( p ){
+ Select *pPrior = p->pPrior;
+ sqlite3ExprListDelete(db, p->pEList);
+ sqlite3SrcListDelete(db, p->pSrc);
+ sqlite3ExprDelete(db, p->pWhere);
+ sqlite3ExprListDelete(db, p->pGroupBy);
+ sqlite3ExprDelete(db, p->pHaving);
+ sqlite3ExprListDelete(db, p->pOrderBy);
+ sqlite3ExprDelete(db, p->pLimit);
+ sqlite3ExprDelete(db, p->pOffset);
+ sqlite3WithDelete(db, p->pWith);
+ if( bFree ) sqlite3DbFree(db, p);
+ p = pPrior;
+ bFree = 1;
+ }
}
/*
pNew->addrOpenEphm[0] = -1;
pNew->addrOpenEphm[1] = -1;
if( db->mallocFailed ) {
- clearSelect(db, pNew);
- if( pNew!=&standin ) sqlite3DbFree(db, pNew);
+ clearSelect(db, pNew, pNew!=&standin);
pNew = 0;
}else{
assert( pNew->pSrc!=0 || pParse->nErr>0 );
** Delete the given Select structure and all of its substructures.
*/
SQLITE_PRIVATE void sqlite3SelectDelete(sqlite3 *db, Select *p){
- if( p ){
- clearSelect(db, p);
- sqlite3DbFree(db, p);
- }
+ clearSelect(db, p, 1);
}
/*
pKI = pOp->p4.pKeyInfo;
memset(pKI->aSortOrder, 0, pKI->nField); /* Makes OP_Jump below testable */
sqlite3VdbeChangeP4(v, -1, (char*)pKI, P4_KEYINFO);
- pOp->p4.pKeyInfo = keyInfoFromExprList(pParse, pSort->pOrderBy, nOBSat, 1);
+ testcase( pKI->nXField>2 );
+ pOp->p4.pKeyInfo = keyInfoFromExprList(pParse, pSort->pOrderBy, nOBSat,
+ pKI->nXField-1);
addrJmp = sqlite3VdbeCurrentAddr(v);
sqlite3VdbeAddOp3(v, OP_Jump, addrJmp+1, 0, addrJmp+1); VdbeCoverage(v);
pSort->labelBkOut = sqlite3VdbeMakeLabel(v);
}
sqlite3VdbeAddOp2(v, op, pSort->iECursor, regRecord);
if( pSelect->iLimit ){
- int addr1, addr2;
+ int addr;
int iLimit;
if( pSelect->iOffset ){
iLimit = pSelect->iOffset+1;
}else{
iLimit = pSelect->iLimit;
}
- addr1 = sqlite3VdbeAddOp1(v, OP_IfZero, iLimit); VdbeCoverage(v);
- sqlite3VdbeAddOp2(v, OP_AddImm, iLimit, -1);
- addr2 = sqlite3VdbeAddOp0(v, OP_Goto);
- sqlite3VdbeJumpHere(v, addr1);
+ addr = sqlite3VdbeAddOp3(v, OP_IfNotZero, iLimit, 0, -1); VdbeCoverage(v);
sqlite3VdbeAddOp1(v, OP_Last, pSort->iECursor);
sqlite3VdbeAddOp1(v, OP_Delete, pSort->iECursor);
- sqlite3VdbeJumpHere(v, addr2);
+ sqlite3VdbeJumpHere(v, addr);
}
}
** the output for us.
*/
if( pSort==0 && p->iLimit ){
- sqlite3VdbeAddOp3(v, OP_IfZero, p->iLimit, iBreak, -1); VdbeCoverage(v);
+ sqlite3VdbeAddOp2(v, OP_DecrJumpZero, p->iLimit, iBreak); VdbeCoverage(v);
}
}
int i;
nExpr = pList->nExpr;
- pInfo = sqlite3KeyInfoAlloc(db, nExpr+nExtra-iStart, 1);
+ pInfo = sqlite3KeyInfoAlloc(db, nExpr-iStart, nExtra+1);
if( pInfo ){
assert( sqlite3KeyInfoIsWriteable(pInfo) );
for(i=iStart, pItem=pList->a+iStart; i<nExpr; i++, pItem++){
sqlite3ExprCode(pParse, p->pLimit, iLimit);
sqlite3VdbeAddOp1(v, OP_MustBeInt, iLimit); VdbeCoverage(v);
VdbeComment((v, "LIMIT counter"));
- sqlite3VdbeAddOp2(v, OP_IfZero, iLimit, iBreak); VdbeCoverage(v);
+ sqlite3VdbeAddOp2(v, OP_IfNot, iLimit, iBreak); VdbeCoverage(v);
}
if( p->pOffset ){
p->iOffset = iOffset = ++pParse->nMem;
selectInnerLoop(pParse, p, p->pEList, iCurrent,
0, 0, pDest, addrCont, addrBreak);
if( regLimit ){
- sqlite3VdbeAddOp3(v, OP_IfZero, regLimit, addrBreak, -1);
+ sqlite3VdbeAddOp2(v, OP_DecrJumpZero, regLimit, addrBreak);
VdbeCoverage(v);
}
sqlite3VdbeResolveLabel(v, addrCont);
SelectDest *pDest /* What to do with query results */
);
+/*
+** Error message for when two or more terms of a compound select have different
+** size result sets.
+*/
+static void selectWrongNumTermsError(Parse *pParse, Select *p){
+ if( p->selFlags & SF_Values ){
+ sqlite3ErrorMsg(pParse, "all VALUES must have the same number of terms");
+ }else{
+ sqlite3ErrorMsg(pParse, "SELECTs to the left and right of %s"
+ " do not have the same number of result columns", selectOpName(p->op));
+ }
+}
+
+/*
+** Handle the special case of a compound-select that originates from a
+** VALUES clause. By handling this as a special case, we avoid deep
+** recursion, and thus do not need to enforce the SQLITE_LIMIT_COMPOUND_SELECT
+** on a VALUES clause.
+**
+** Because the Select object originates from a VALUES clause:
+** (1) It has no LIMIT or OFFSET
+** (2) All terms are UNION ALL
+** (3) There is no ORDER BY clause
+*/
+static int multiSelectValues(
+ Parse *pParse, /* Parsing context */
+ Select *p, /* The right-most of SELECTs to be coded */
+ SelectDest *pDest /* What to do with query results */
+){
+ Select *pPrior;
+ int nExpr = p->pEList->nExpr;
+ int nRow = 1;
+ int rc = 0;
+ assert( p->pNext==0 );
+ assert( p->selFlags & SF_AllValues );
+ do{
+ assert( p->selFlags & SF_Values );
+ assert( p->op==TK_ALL || (p->op==TK_SELECT && p->pPrior==0) );
+ assert( p->pLimit==0 );
+ assert( p->pOffset==0 );
+ if( p->pEList->nExpr!=nExpr ){
+ selectWrongNumTermsError(pParse, p);
+ return 1;
+ }
+ if( p->pPrior==0 ) break;
+ assert( p->pPrior->pNext==p );
+ p = p->pPrior;
+ nRow++;
+ }while(1);
+ while( p ){
+ pPrior = p->pPrior;
+ p->pPrior = 0;
+ rc = sqlite3Select(pParse, p, pDest);
+ p->pPrior = pPrior;
+ if( rc ) break;
+ p->nSelectRow = nRow;
+ p = p->pNext;
+ }
+ return rc;
+}
/*
** This routine is called to process a compound query form from
dest.eDest = SRT_Table;
}
+ /* Special handling for a compound-select that originates as a VALUES clause.
+ */
+ if( p->selFlags & SF_AllValues ){
+ rc = multiSelectValues(pParse, p, &dest);
+ goto multi_select_end;
+ }
+
/* Make sure all SELECTs in the statement have the same number of elements
** in their result sets.
*/
assert( p->pEList && pPrior->pEList );
if( p->pEList->nExpr!=pPrior->pEList->nExpr ){
- if( p->selFlags & SF_Values ){
- sqlite3ErrorMsg(pParse, "all VALUES must have the same number of terms");
- }else{
- sqlite3ErrorMsg(pParse, "SELECTs to the left and right of %s"
- " do not have the same number of result columns", selectOpName(p->op));
- }
+ selectWrongNumTermsError(pParse, p);
rc = 1;
goto multi_select_end;
}
p->iLimit = pPrior->iLimit;
p->iOffset = pPrior->iOffset;
if( p->iLimit ){
- addr = sqlite3VdbeAddOp1(v, OP_IfZero, p->iLimit); VdbeCoverage(v);
+ addr = sqlite3VdbeAddOp1(v, OP_IfNot, p->iLimit); VdbeCoverage(v);
VdbeComment((v, "Jump ahead if LIMIT reached"));
}
explainSetInteger(iSub2, pParse->iNextSelectId);
/* Jump to the end of the loop if the LIMIT is reached.
*/
if( p->iLimit ){
- sqlite3VdbeAddOp3(v, OP_IfZero, p->iLimit, iBreak, -1); VdbeCoverage(v);
+ sqlite3VdbeAddOp2(v, OP_DecrJumpZero, p->iLimit, iBreak); VdbeCoverage(v);
}
/* Generate the subroutine return
**
** (1) The subquery and the outer query do not both use aggregates.
**
-** (2) The subquery is not an aggregate or the outer query is not a join.
+** (2) The subquery is not an aggregate or (2a) the outer query is not a join
+** and (2b) the outer query does not use subqueries other than the one
+** FROM-clause subquery that is a candidate for flattening. (2b is
+** due to ticket [2f7170d73bf9abf80] from 2015-02-09.)
**
** (3) The subquery is not the right operand of a left outer join
** (Originally ticket #306. Strengthened by ticket #3300)
iParent = pSubitem->iCursor;
pSub = pSubitem->pSelect;
assert( pSub!=0 );
- if( isAgg && subqueryIsAgg ) return 0; /* Restriction (1) */
- if( subqueryIsAgg && pSrc->nSrc>1 ) return 0; /* Restriction (2) */
+ if( subqueryIsAgg ){
+ if( isAgg ) return 0; /* Restriction (1) */
+ if( pSrc->nSrc>1 ) return 0; /* Restriction (2a) */
+ if( (p->pWhere && ExprHasProperty(p->pWhere,EP_Subquery))
+ || (sqlite3ExprListFlags(p->pEList) & EP_Subquery)!=0
+ || (sqlite3ExprListFlags(p->pOrderBy) & EP_Subquery)!=0
+ ){
+ return 0; /* Restriction (2b) */
+ }
+ }
+
pSubSrc = pSub->pSrc;
assert( pSubSrc );
/* Prior to version 3.1.2, when LIMIT and OFFSET had to be simple constants,
p->pPrior = 0;
p->pNext = 0;
p->selFlags &= ~SF_Compound;
+ assert( (p->selFlags & SF_Converted)==0 );
+ p->selFlags |= SF_Converted;
assert( pNew->pPrior!=0 );
pNew->pPrior->pNext = pNew;
pNew->pLimit = 0;
for(pLeft=pSel; pLeft->pPrior; pLeft=pLeft->pPrior);
pEList = pLeft->pEList;
if( pCte->pCols ){
- if( pEList->nExpr!=pCte->pCols->nExpr ){
+ if( pEList && pEList->nExpr!=pCte->pCols->nExpr ){
sqlite3ErrorMsg(pParse, "table %s has %d values for %d columns",
pCte->zName, pEList->nExpr, pCte->pCols->nExpr
);
}
pTabList = p->pSrc;
pEList = p->pEList;
- sqlite3WithPush(pParse, findRightmost(p)->pWith, 0);
+ if( pWalker->xSelectCallback2==selectPopWith ){
+ sqlite3WithPush(pParse, findRightmost(p)->pWith, 0);
+ }
/* Make sure cursor numbers have been assigned to all entries in
** the FROM clause of the SELECT statement.
/* A sub-query in the FROM clause of a SELECT */
assert( pSel!=0 );
assert( pFrom->pTab==0 );
- sqlite3WalkSelect(pWalker, pSel);
+ if( sqlite3WalkSelect(pWalker, pSel) ) return WRC_Abort;
pFrom->pTab = pTab = sqlite3DbMallocZero(db, sizeof(Table));
if( pTab==0 ) return WRC_Abort;
pTab->nRef = 1;
sqlite3WalkSelect(&w, pSelect);
}
w.xSelectCallback = selectExpander;
- w.xSelectCallback2 = selectPopWith;
+ if( (pSelect->selFlags & SF_AllValues)==0 ){
+ w.xSelectCallback2 = selectPopWith;
+ }
sqlite3WalkSelect(&w, pSelect);
}
}
isAgg = (p->selFlags & SF_Aggregate)!=0;
assert( pEList!=0 );
+#if SELECTTRACE_ENABLED
+ if( sqlite3SelectTrace & 0x100 ){
+ SELECTTRACE(0x100,pParse,p, ("after name resolution:\n"));
+ sqlite3TreeViewSelect(0, p, 0);
+ }
+#endif
+
/* Begin generating code.
*/
**
** is transformed to:
**
- ** SELECT xyz FROM ... GROUP BY xyz
+ ** SELECT xyz FROM ... GROUP BY xyz ORDER BY xyz
**
** The second form is preferred as a single index (or temp-table) may be
** used for both the ORDER BY and DISTINCT processing. As originally
p->selFlags &= ~SF_Distinct;
p->pGroupBy = sqlite3ExprListDup(db, p->pEList, 0);
pGroupBy = p->pGroupBy;
- sSort.pOrderBy = 0;
/* Notice that even thought SF_Distinct has been cleared from p->selFlags,
** the sDistinct.isTnct is still set. Hence, isTnct represents the
** original setting of the SF_Distinct flag, not the current setting */
*/
if( sSort.pOrderBy ){
KeyInfo *pKeyInfo;
- pKeyInfo = keyInfoFromExprList(pParse, sSort.pOrderBy, 0, 0);
+ pKeyInfo = keyInfoFromExprList(pParse, sSort.pOrderBy, 0, pEList->nExpr);
sSort.iECursor = pParse->nTab++;
sSort.addrSortIndex =
sqlite3VdbeAddOp4(v, OP_OpenEphemeral,
** will be converted into a Noop.
*/
sAggInfo.sortingIdx = pParse->nTab++;
- pKeyInfo = keyInfoFromExprList(pParse, pGroupBy, 0, 0);
+ pKeyInfo = keyInfoFromExprList(pParse, pGroupBy, 0, sAggInfo.nColumn);
addrSortingIdx = sqlite3VdbeAddOp4(v, OP_SorterOpen,
sAggInfo.sortingIdx, sAggInfo.nSortingColumn,
0, (char*)pKeyInfo, P4_KEYINFO);
SQLITE_PRIVATE void sqlite3TreeViewSelect(TreeView *pView, const Select *p, u8 moreToFollow){
int n = 0;
pView = sqlite3TreeViewPush(pView, moreToFollow);
- sqlite3TreeViewLine(pView, "SELECT%s%s",
+ sqlite3TreeViewLine(pView, "SELECT%s%s (0x%p)",
((p->selFlags & SF_Distinct) ? " DISTINCT" : ""),
- ((p->selFlags & SF_Aggregate) ? " agg_flag" : "")
+ ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""), p
);
if( p->pSrc && p->pSrc->nSrc ) n++;
if( p->pWhere ) n++;
** Instead, the entire table should be passed to sqlite3_free_table() when
** the calling procedure is finished using it.
*/
-SQLITE_API int sqlite3_get_table(
+SQLITE_API int SQLITE_STDCALL sqlite3_get_table(
sqlite3 *db, /* The database on which the SQL executes */
const char *zSql, /* The SQL to be executed */
char ***pazResult, /* Write the result table here */
int rc;
TabResult res;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) || pazResult==0 ) return SQLITE_MISUSE_BKPT;
+#endif
*pazResult = 0;
if( pnColumn ) *pnColumn = 0;
if( pnRow ) *pnRow = 0;
/*
** This routine frees the space the sqlite3_get_table() malloced.
*/
-SQLITE_API void sqlite3_free_table(
+SQLITE_API void SQLITE_STDCALL sqlite3_free_table(
char **azResult /* Result returned from sqlite3_get_table() */
){
if( azResult ){
/* Top of the update loop */
if( okOnePass ){
- if( aToOpen[iDataCur-iBaseCur] ){
- assert( pPk!=0 );
+ if( aToOpen[iDataCur-iBaseCur] && !isView ){
+ assert( pPk );
sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, labelBreak, regKey, nKey);
VdbeCoverageNeverTaken(v);
}
** overwriting the database with the vacuumed content.
**
** Only 1x temporary space and only 1x writes would be required if
-** the copy of step (3) were replace by deleting the original database
+** the copy of step (3) were replaced by deleting the original database
** and renaming the transient database as the original. But that will
** not work if other processes are attached to the original database.
** And a power loss in between deleting the original and renaming the
** cause problems for the call to BtreeSetPageSize() below. */
sqlite3BtreeCommit(pTemp);
- nRes = sqlite3BtreeGetReserve(pMain);
+ nRes = sqlite3BtreeGetOptimalReserve(pMain);
/* A VACUUM cannot change the pagesize of an encrypted database. */
#ifdef SQLITE_HAS_CODEC
/*
** External API function used to create a new virtual-table module.
*/
-SQLITE_API int sqlite3_create_module(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_module(
sqlite3 *db, /* Database in which module is registered */
const char *zName, /* Name assigned to this module */
const sqlite3_module *pModule, /* The definition of the module */
void *pAux /* Context pointer for xCreate/xConnect */
){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT;
+#endif
return createModule(db, zName, pModule, pAux, 0);
}
/*
** External API function used to create a new virtual-table module.
*/
-SQLITE_API int sqlite3_create_module_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_module_v2(
sqlite3 *db, /* Database in which module is registered */
const char *zName, /* Name assigned to this module */
const sqlite3_module *pModule, /* The definition of the module */
void *pAux, /* Context pointer for xCreate/xConnect */
void (*xDestroy)(void *) /* Module destructor function */
){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT;
+#endif
return createModule(db, zName, pModule, pAux, xDestroy);
}
addModuleArgument(db, pTable, sqlite3NameFromToken(db, pModuleName));
addModuleArgument(db, pTable, 0);
addModuleArgument(db, pTable, sqlite3DbStrDup(db, pTable->zName));
- pParse->sNameToken.n = (int)(&pModuleName->z[pModuleName->n] - pName1->z);
+ assert( (pParse->sNameToken.z==pName2->z && pName2->z!=0)
+ || (pParse->sNameToken.z==pName1->z && pName2->z==0)
+ );
+ pParse->sNameToken.n = (int)(
+ &pModuleName->z[pModuleName->n] - pParse->sNameToken.z
+ );
#ifndef SQLITE_OMIT_AUTHORIZATION
/* Creating a virtual table invokes the authorization callback twice.
char *zStmt;
char *zWhere;
int iDb;
+ int iReg;
Vdbe *v;
/* Compute the complete text of the CREATE VIRTUAL TABLE statement */
sqlite3VdbeAddOp2(v, OP_Expire, 0, 0);
zWhere = sqlite3MPrintf(db, "name='%q' AND type='table'", pTab->zName);
sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere);
- sqlite3VdbeAddOp4(v, OP_VCreate, iDb, 0, 0,
- pTab->zName, sqlite3Strlen30(pTab->zName) + 1);
+
+ iReg = ++pParse->nMem;
+ sqlite3VdbeAddOp4(v, OP_String8, 0, iReg, 0, pTab->zName, 0);
+ sqlite3VdbeAddOp2(v, OP_VCreate, iDb, iReg);
}
/* If we are rereading the sqlite_master table create the in-memory
** valid to call this function from within the xCreate() or xConnect() of a
** virtual table module.
*/
-SQLITE_API int sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){
+SQLITE_API int SQLITE_STDCALL sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){
Parse *pParse;
int rc = SQLITE_OK;
Table *pTab;
char *zErr = 0;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) || zCreateTable==0 ){
+ return SQLITE_MISUSE_BKPT;
+ }
+#endif
sqlite3_mutex_enter(db->mutex);
if( !db->pVtabCtx || !(pTab = db->pVtabCtx->pTab) ){
sqlite3Error(db, SQLITE_MISUSE);
pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zName);
if( ALWAYS(pTab!=0 && pTab->pVTable!=0) ){
- VTable *p = vtabDisconnectAll(db, pTab);
-
- assert( rc==SQLITE_OK );
+ VTable *p;
+ for(p=pTab->pVTable; p; p=p->pNext){
+ assert( p->pVtab );
+ if( p->pVtab->nRef>0 ){
+ return SQLITE_LOCKED;
+ }
+ }
+ p = vtabDisconnectAll(db, pTab);
rc = p->pMod->pModule->xDestroy(p->pVtab);
-
/* Remove the sqlite3_vtab* from the aVTrans[] array, if applicable */
if( rc==SQLITE_OK ){
assert( pTab->pVTable==p && p->pNext==0 );
** The results of this routine are undefined unless it is called from
** within an xUpdate method.
*/
-SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *db){
+SQLITE_API int SQLITE_STDCALL sqlite3_vtab_on_conflict(sqlite3 *db){
static const unsigned char aMap[] = {
SQLITE_ROLLBACK, SQLITE_ABORT, SQLITE_FAIL, SQLITE_IGNORE, SQLITE_REPLACE
};
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
assert( OE_Rollback==1 && OE_Abort==2 && OE_Fail==3 );
assert( OE_Ignore==4 && OE_Replace==5 );
assert( db->vtabOnConflict>=1 && db->vtabOnConflict<=5 );
** the SQLite core with additional information about the behavior
** of the virtual table being implemented.
*/
-SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...){
+SQLITE_API int SQLITE_CDECL sqlite3_vtab_config(sqlite3 *db, int op, ...){
va_list ap;
int rc = SQLITE_OK;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(db->mutex);
-
va_start(ap, op);
switch( op ){
case SQLITE_VTAB_CONSTRAINT_SUPPORT: {
int addrCont; /* Jump here to continue with the next loop cycle */
int addrFirst; /* First instruction of interior of the loop */
int addrBody; /* Beginning of the body of this loop */
+ int iLikeRepCntr; /* LIKE range processing counter register */
+ int addrLikeRep; /* LIKE range processing address */
u8 iFrom; /* Which entry in the FROM clause */
u8 op, p3, p5; /* Opcode, P3 & P5 of the opcode that ends the loop */
int p1, p2; /* Operands of the opcode used to ends the loop */
} u;
struct WhereLoop *pWLoop; /* The selected WhereLoop object */
Bitmask notReady; /* FROM entries not usable at this level */
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+ int addrVisit; /* Address at which row is visited */
+#endif
};
/*
union {
struct { /* Information for internal btree tables */
u16 nEq; /* Number of equality constraints */
- u16 nSkip; /* Number of initial index columns to skip */
Index *pIndex; /* Index used, or NULL */
} btree;
struct { /* Information for virtual tables */
} u;
u32 wsFlags; /* WHERE_* flags describing the plan */
u16 nLTerm; /* Number of entries in aLTerm[] */
+ u16 nSkip; /* Number of NULL aLTerm[] entries */
/**** whereLoopXfer() copies fields above ***********************/
# define WHERE_LOOP_XFER_SZ offsetof(WhereLoop,nLSlot)
u16 nLSlot; /* Number of slots allocated for aLTerm[] */
WhereTerm **aLTerm; /* WhereTerms used */
WhereLoop *pNextLoop; /* Next WhereLoop object in the WhereClause */
- WhereTerm *aLTermSpace[4]; /* Initial aLTerm[] space */
+ WhereTerm *aLTermSpace[3]; /* Initial aLTerm[] space */
};
/* This object holds the prerequisites and the cost of running a
} u;
LogEst truthProb; /* Probability of truth for this expression */
u16 eOperator; /* A WO_xx value describing <op> */
- u8 wtFlags; /* TERM_xxx bit flags. See below */
+ u16 wtFlags; /* TERM_xxx bit flags. See below */
u8 nChild; /* Number of children that must disable us */
WhereClause *pWC; /* The clause this term is part of */
Bitmask prereqRight; /* Bitmask of tables used by pExpr->pRight */
#else
# define TERM_VNULL 0x00 /* Disabled if not using stat3 */
#endif
+#define TERM_LIKEOPT 0x100 /* Virtual terms from the LIKE optimization */
+#define TERM_LIKECOND 0x200 /* Conditionally this LIKE operator term */
+#define TERM_LIKE 0x400 /* The original LIKE operator */
/*
** An instance of the WhereScan object is used as an iterator for locating
#define WHERE_AUTO_INDEX 0x00004000 /* Uses an ephemeral index */
#define WHERE_SKIPSCAN 0x00008000 /* Uses the skip-scan algorithm */
#define WHERE_UNQ_WANTED 0x00010000 /* WHERE_ONEROW would have been helpful*/
+#define WHERE_PARTIALIDX 0x00020000 /* The automatic index is partial */
/************** End of whereInt.h ********************************************/
/************** Continuing where we left off in where.c **********************/
** calling this routine. Such pointers may be reinitialized by referencing
** the pWC->a[] array.
*/
-static int whereClauseInsert(WhereClause *pWC, Expr *p, u8 wtFlags){
+static int whereClauseInsert(WhereClause *pWC, Expr *p, u16 wtFlags){
WhereTerm *pTerm;
int idx;
testcase( wtFlags & TERM_VIRTUAL );
sqlite3DbFree(db, pOld);
}
pWC->nSlot = sqlite3DbMallocSize(db, pWC->a)/sizeof(pWC->a[0]);
+ memset(&pWC->a[pWC->nTerm], 0, sizeof(pWC->a[0])*(pWC->nSlot-pWC->nTerm));
}
pTerm = &pWC->a[idx = pWC->nTerm++];
if( p && ExprHasProperty(p, EP_Unlikely) ){
- pTerm->truthProb = sqlite3LogEst(p->iTable) - 99;
+ pTerm->truthProb = sqlite3LogEst(p->iTable) - 270;
}else{
pTerm->truthProb = 1;
}
** so and false if not.
**
** In order for the operator to be optimizible, the RHS must be a string
-** literal that does not begin with a wildcard.
+** literal that does not begin with a wildcard. The LHS must be a column
+** that may only be NULL, a string, or a BLOB, never a number. (This means
+** that virtual tables cannot participate in the LIKE optimization.) If the
+** collating sequence for the column on the LHS must be appropriate for
+** the operator.
*/
static int isLikeOrGlob(
Parse *pParse, /* Parsing and code generating context */
pLeft = pList->a[1].pExpr;
if( pLeft->op!=TK_COLUMN
|| sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT
- || IsVirtual(pLeft->pTab)
+ || IsVirtual(pLeft->pTab) /* Value might be numeric */
){
/* IMP: R-02065-49465 The left-hand side of the LIKE or GLOB operator must
** be the name of an indexed column with TEXT affinity. */
}
}
+/*
+** Mark term iChild as being a child of term iParent
+*/
+static void markTermAsChild(WhereClause *pWC, int iChild, int iParent){
+ pWC->a[iChild].iParent = iParent;
+ pWC->a[iChild].truthProb = pWC->a[iParent].truthProb;
+ pWC->a[iParent].nChild++;
+}
+
+/*
+** Return the N-th AND-connected subterm of pTerm. Or if pTerm is not
+** a conjunction, then return just pTerm when N==0. If N is exceeds
+** the number of available subterms, return NULL.
+*/
+static WhereTerm *whereNthSubterm(WhereTerm *pTerm, int N){
+ if( pTerm->eOperator!=WO_AND ){
+ return N==0 ? pTerm : 0;
+ }
+ if( N<pTerm->u.pAndInfo->wc.nTerm ){
+ return &pTerm->u.pAndInfo->wc.a[N];
+ }
+ return 0;
+}
+
+/*
+** Subterms pOne and pTwo are contained within WHERE clause pWC. The
+** two subterms are in disjunction - they are OR-ed together.
+**
+** If these two terms are both of the form: "A op B" with the same
+** A and B values but different operators and if the operators are
+** compatible (if one is = and the other is <, for example) then
+** add a new virtual AND term to pWC that is the combination of the
+** two.
+**
+** Some examples:
+**
+** x<y OR x=y --> x<=y
+** x=y OR x=y --> x=y
+** x<=y OR x<y --> x<=y
+**
+** The following is NOT generated:
+**
+** x<y OR x>y --> x!=y
+*/
+static void whereCombineDisjuncts(
+ SrcList *pSrc, /* the FROM clause */
+ WhereClause *pWC, /* The complete WHERE clause */
+ WhereTerm *pOne, /* First disjunct */
+ WhereTerm *pTwo /* Second disjunct */
+){
+ u16 eOp = pOne->eOperator | pTwo->eOperator;
+ sqlite3 *db; /* Database connection (for malloc) */
+ Expr *pNew; /* New virtual expression */
+ int op; /* Operator for the combined expression */
+ int idxNew; /* Index in pWC of the next virtual term */
+
+ if( (pOne->eOperator & (WO_EQ|WO_LT|WO_LE|WO_GT|WO_GE))==0 ) return;
+ if( (pTwo->eOperator & (WO_EQ|WO_LT|WO_LE|WO_GT|WO_GE))==0 ) return;
+ if( (eOp & (WO_EQ|WO_LT|WO_LE))!=eOp
+ && (eOp & (WO_EQ|WO_GT|WO_GE))!=eOp ) return;
+ assert( pOne->pExpr->pLeft!=0 && pOne->pExpr->pRight!=0 );
+ assert( pTwo->pExpr->pLeft!=0 && pTwo->pExpr->pRight!=0 );
+ if( sqlite3ExprCompare(pOne->pExpr->pLeft, pTwo->pExpr->pLeft, -1) ) return;
+ if( sqlite3ExprCompare(pOne->pExpr->pRight, pTwo->pExpr->pRight, -1) )return;
+ /* If we reach this point, it means the two subterms can be combined */
+ if( (eOp & (eOp-1))!=0 ){
+ if( eOp & (WO_LT|WO_LE) ){
+ eOp = WO_LE;
+ }else{
+ assert( eOp & (WO_GT|WO_GE) );
+ eOp = WO_GE;
+ }
+ }
+ db = pWC->pWInfo->pParse->db;
+ pNew = sqlite3ExprDup(db, pOne->pExpr, 0);
+ if( pNew==0 ) return;
+ for(op=TK_EQ; eOp!=(WO_EQ<<(op-TK_EQ)); op++){ assert( op<TK_GE ); }
+ pNew->op = op;
+ idxNew = whereClauseInsert(pWC, pNew, TERM_VIRTUAL|TERM_DYNAMIC);
+ exprAnalyze(pSrc, pWC, idxNew);
+}
+
#if !defined(SQLITE_OMIT_OR_OPTIMIZATION) && !defined(SQLITE_OMIT_SUBQUERY)
/*
** Analyze a term that consists of two or more OR-connected
** (C) t1.x=t2.y OR (t1.x=t2.z AND t1.y=15)
** (D) x=expr1 OR (y>11 AND y<22 AND z LIKE '*hello*')
** (E) (p.a=1 AND q.b=2 AND r.c=3) OR (p.x=4 AND q.y=5 AND r.z=6)
+** (F) x>A OR (x=A AND y>=B)
**
** CASE 1:
**
**
** CASE 2:
**
+** If there are exactly two disjuncts one side has x>A and the other side
+** has x=A (for the same x and A) then add a new virtual conjunct term to the
+** WHERE clause of the form "x>=A". Example:
+**
+** x>A OR (x=A AND y>B) adds: x>=A
+**
+** The added conjunct can sometimes be helpful in query planning.
+**
+** CASE 3:
+**
** If all subterms are indexable by a single table T, then set
**
** WhereTerm.eOperator = WO_OR
}
/*
- ** Record the set of tables that satisfy case 2. The set might be
+ ** Record the set of tables that satisfy case 3. The set might be
** empty.
*/
pOrInfo->indexable = indexable;
pTerm->eOperator = indexable==0 ? 0 : WO_OR;
+ /* For a two-way OR, attempt to implementation case 2.
+ */
+ if( indexable && pOrWc->nTerm==2 ){
+ int iOne = 0;
+ WhereTerm *pOne;
+ while( (pOne = whereNthSubterm(&pOrWc->a[0],iOne++))!=0 ){
+ int iTwo = 0;
+ WhereTerm *pTwo;
+ while( (pTwo = whereNthSubterm(&pOrWc->a[1],iTwo++))!=0 ){
+ whereCombineDisjuncts(pSrc, pWC, pOne, pTwo);
+ }
+ }
+ }
+
/*
** chngToIN holds a set of tables that *might* satisfy case 1. But
** we have to do some additional checking to see if case 1 really
testcase( idxNew==0 );
exprAnalyze(pSrc, pWC, idxNew);
pTerm = &pWC->a[idxTerm];
- pWC->a[idxNew].iParent = idxTerm;
- pTerm->nChild = 1;
+ markTermAsChild(pWC, idxNew, idxTerm);
}else{
sqlite3ExprListDelete(db, pList);
}
- pTerm->eOperator = WO_NOOP; /* case 1 trumps case 2 */
+ pTerm->eOperator = WO_NOOP; /* case 1 trumps case 3 */
}
}
}
Bitmask extraRight = 0; /* Extra dependencies on LEFT JOIN */
Expr *pStr1 = 0; /* RHS of LIKE/GLOB operator */
int isComplete = 0; /* RHS of LIKE/GLOB ends with wildcard */
- int noCase = 0; /* LIKE/GLOB distinguishes case */
+ int noCase = 0; /* uppercase equivalent to lowercase */
int op; /* Top-level operator. pExpr->op */
Parse *pParse = pWInfo->pParse; /* Parsing context */
sqlite3 *db = pParse->db; /* Database connection */
idxNew = whereClauseInsert(pWC, pDup, TERM_VIRTUAL|TERM_DYNAMIC);
if( idxNew==0 ) return;
pNew = &pWC->a[idxNew];
- pNew->iParent = idxTerm;
+ markTermAsChild(pWC, idxNew, idxTerm);
pTerm = &pWC->a[idxTerm];
- pTerm->nChild = 1;
pTerm->wtFlags |= TERM_COPIED;
if( pExpr->op==TK_EQ
&& !ExprHasProperty(pExpr, EP_FromJoin)
testcase( idxNew==0 );
exprAnalyze(pSrc, pWC, idxNew);
pTerm = &pWC->a[idxTerm];
- pWC->a[idxNew].iParent = idxTerm;
+ markTermAsChild(pWC, idxNew, idxTerm);
}
- pTerm->nChild = 2;
}
#endif /* SQLITE_OMIT_BETWEEN_OPTIMIZATION */
/* Add constraints to reduce the search space on a LIKE or GLOB
** operator.
**
- ** A like pattern of the form "x LIKE 'abc%'" is changed into constraints
+ ** A like pattern of the form "x LIKE 'aBc%'" is changed into constraints
**
- ** x>='abc' AND x<'abd' AND x LIKE 'abc%'
+ ** x>='ABC' AND x<'abd' AND x LIKE 'aBc%'
**
** The last character of the prefix "abc" is incremented to form the
- ** termination condition "abd".
+ ** termination condition "abd". If case is not significant (the default
+ ** for LIKE) then the lower-bound is made all uppercase and the upper-
+ ** bound is made all lowercase so that the bounds also work when comparing
+ ** BLOBs.
*/
if( pWC->op==TK_AND
&& isLikeOrGlob(pParse, pExpr, &pStr1, &isComplete, &noCase)
Expr *pNewExpr2;
int idxNew1;
int idxNew2;
- Token sCollSeqName; /* Name of collating sequence */
+ const char *zCollSeqName; /* Name of collating sequence */
+ const u16 wtFlags = TERM_LIKEOPT | TERM_VIRTUAL | TERM_DYNAMIC;
pLeft = pExpr->x.pList->a[1].pExpr;
pStr2 = sqlite3ExprDup(db, pStr1, 0);
+
+ /* Convert the lower bound to upper-case and the upper bound to
+ ** lower-case (upper-case is less than lower-case in ASCII) so that
+ ** the range constraints also work for BLOBs
+ */
+ if( noCase && !pParse->db->mallocFailed ){
+ int i;
+ char c;
+ pTerm->wtFlags |= TERM_LIKE;
+ for(i=0; (c = pStr1->u.zToken[i])!=0; i++){
+ pStr1->u.zToken[i] = sqlite3Toupper(c);
+ pStr2->u.zToken[i] = sqlite3Tolower(c);
+ }
+ }
+
if( !db->mallocFailed ){
u8 c, *pC; /* Last character before the first wildcard */
pC = (u8*)&pStr2->u.zToken[sqlite3Strlen30(pStr2->u.zToken)-1];
}
*pC = c + 1;
}
- sCollSeqName.z = noCase ? "NOCASE" : "BINARY";
- sCollSeqName.n = 6;
+ zCollSeqName = noCase ? "NOCASE" : "BINARY";
pNewExpr1 = sqlite3ExprDup(db, pLeft, 0);
- pNewExpr1 = sqlite3PExpr(pParse, TK_GE,
- sqlite3ExprAddCollateToken(pParse,pNewExpr1,&sCollSeqName),
+ pNewExpr1 = sqlite3PExpr(pParse, TK_GE,
+ sqlite3ExprAddCollateString(pParse,pNewExpr1,zCollSeqName),
pStr1, 0);
transferJoinMarkings(pNewExpr1, pExpr);
- idxNew1 = whereClauseInsert(pWC, pNewExpr1, TERM_VIRTUAL|TERM_DYNAMIC);
+ idxNew1 = whereClauseInsert(pWC, pNewExpr1, wtFlags);
testcase( idxNew1==0 );
exprAnalyze(pSrc, pWC, idxNew1);
pNewExpr2 = sqlite3ExprDup(db, pLeft, 0);
pNewExpr2 = sqlite3PExpr(pParse, TK_LT,
- sqlite3ExprAddCollateToken(pParse,pNewExpr2,&sCollSeqName),
+ sqlite3ExprAddCollateString(pParse,pNewExpr2,zCollSeqName),
pStr2, 0);
transferJoinMarkings(pNewExpr2, pExpr);
- idxNew2 = whereClauseInsert(pWC, pNewExpr2, TERM_VIRTUAL|TERM_DYNAMIC);
+ idxNew2 = whereClauseInsert(pWC, pNewExpr2, wtFlags);
testcase( idxNew2==0 );
exprAnalyze(pSrc, pWC, idxNew2);
pTerm = &pWC->a[idxTerm];
if( isComplete ){
- pWC->a[idxNew1].iParent = idxTerm;
- pWC->a[idxNew2].iParent = idxTerm;
- pTerm->nChild = 2;
+ markTermAsChild(pWC, idxNew1, idxTerm);
+ markTermAsChild(pWC, idxNew2, idxTerm);
}
}
#endif /* SQLITE_OMIT_LIKE_OPTIMIZATION */
pNewTerm->leftCursor = pLeft->iTable;
pNewTerm->u.leftColumn = pLeft->iColumn;
pNewTerm->eOperator = WO_MATCH;
- pNewTerm->iParent = idxTerm;
+ markTermAsChild(pWC, idxNew, idxTerm);
pTerm = &pWC->a[idxTerm];
- pTerm->nChild = 1;
pTerm->wtFlags |= TERM_COPIED;
pNewTerm->prereqAll = pTerm->prereqAll;
}
if( pExpr->op==TK_NOTNULL
&& pExpr->pLeft->op==TK_COLUMN
&& pExpr->pLeft->iColumn>=0
- && OptimizationEnabled(db, SQLITE_Stat3)
+ && OptimizationEnabled(db, SQLITE_Stat34)
){
Expr *pNewExpr;
Expr *pLeft = pExpr->pLeft;
pNewTerm->leftCursor = pLeft->iTable;
pNewTerm->u.leftColumn = pLeft->iColumn;
pNewTerm->eOperator = WO_GT;
- pNewTerm->iParent = idxTerm;
+ markTermAsChild(pWC, idxNew, idxTerm);
pTerm = &pWC->a[idxTerm];
- pTerm->nChild = 1;
pTerm->wtFlags |= TERM_COPIED;
pNewTerm->prereqAll = pTerm->prereqAll;
}
Bitmask idxCols; /* Bitmap of columns used for indexing */
Bitmask extraCols; /* Bitmap of additional columns */
u8 sentWarning = 0; /* True if a warnning has been issued */
+ Expr *pPartial = 0; /* Partial Index Expression */
+ int iContinue = 0; /* Jump here to skip excluded rows */
/* Generate code to skip over the creation and initialization of the
** transient index on 2nd and subsequent iterations of the loop. */
pLoop = pLevel->pWLoop;
idxCols = 0;
for(pTerm=pWC->a; pTerm<pWCEnd; pTerm++){
+ Expr *pExpr = pTerm->pExpr;
+ assert( !ExprHasProperty(pExpr, EP_FromJoin) /* prereq always non-zero */
+ || pExpr->iRightJoinTable!=pSrc->iCursor /* for the right-hand */
+ || pLoop->prereq!=0 ); /* table of a LEFT JOIN */
+ if( pLoop->prereq==0
+ && (pTerm->wtFlags & TERM_VIRTUAL)==0
+ && !ExprHasProperty(pExpr, EP_FromJoin)
+ && sqlite3ExprIsTableConstant(pExpr, pSrc->iCursor) ){
+ pPartial = sqlite3ExprAnd(pParse->db, pPartial,
+ sqlite3ExprDup(pParse->db, pExpr, 0));
+ }
if( termCanDriveIndex(pTerm, pSrc, notReady) ){
int iCol = pTerm->u.leftColumn;
Bitmask cMask = iCol>=BMS ? MASKBIT(BMS-1) : MASKBIT(iCol);
sentWarning = 1;
}
if( (idxCols & cMask)==0 ){
- if( whereLoopResize(pParse->db, pLoop, nKeyCol+1) ) return;
+ if( whereLoopResize(pParse->db, pLoop, nKeyCol+1) ){
+ goto end_auto_index_create;
+ }
pLoop->aLTerm[nKeyCol++] = pTerm;
idxCols |= cMask;
}
** if they go out of sync.
*/
extraCols = pSrc->colUsed & (~idxCols | MASKBIT(BMS-1));
- mxBitCol = (pTable->nCol >= BMS-1) ? BMS-1 : pTable->nCol;
+ mxBitCol = MIN(BMS-1,pTable->nCol);
testcase( pTable->nCol==BMS-1 );
testcase( pTable->nCol==BMS-2 );
for(i=0; i<mxBitCol; i++){
if( pSrc->colUsed & MASKBIT(BMS-1) ){
nKeyCol += pTable->nCol - BMS + 1;
}
- pLoop->wsFlags |= WHERE_COLUMN_EQ | WHERE_IDX_ONLY;
/* Construct the Index object to describe this index */
pIdx = sqlite3AllocateIndexObject(pParse->db, nKeyCol+1, 0, &zNotUsed);
- if( pIdx==0 ) return;
+ if( pIdx==0 ) goto end_auto_index_create;
pLoop->u.btree.pIndex = pIdx;
pIdx->zName = "auto-index";
pIdx->pTable = pTable;
VdbeComment((v, "for %s", pTable->zName));
/* Fill the automatic index with content */
+ sqlite3ExprCachePush(pParse);
addrTop = sqlite3VdbeAddOp1(v, OP_Rewind, pLevel->iTabCur); VdbeCoverage(v);
+ if( pPartial ){
+ iContinue = sqlite3VdbeMakeLabel(v);
+ sqlite3ExprIfFalse(pParse, pPartial, iContinue, SQLITE_JUMPIFNULL);
+ pLoop->wsFlags |= WHERE_PARTIALIDX;
+ }
regRecord = sqlite3GetTempReg(pParse);
sqlite3GenerateIndexKey(pParse, pIdx, pLevel->iTabCur, regRecord, 0, 0, 0, 0);
sqlite3VdbeAddOp2(v, OP_IdxInsert, pLevel->iIdxCur, regRecord);
sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT);
+ if( pPartial ) sqlite3VdbeResolveLabel(v, iContinue);
sqlite3VdbeAddOp2(v, OP_Next, pLevel->iTabCur, addrTop+1); VdbeCoverage(v);
sqlite3VdbeChangeP5(v, SQLITE_STMTSTATUS_AUTOINDEX);
sqlite3VdbeJumpHere(v, addrTop);
sqlite3ReleaseTempReg(pParse, regRecord);
+ sqlite3ExprCachePop(pParse);
/* Jump here when skipping the initialization */
sqlite3VdbeJumpHere(v, addrInit);
+
+end_auto_index_create:
+ sqlite3ExprDelete(pParse->db, pPartial);
}
#endif /* SQLITE_OMIT_AUTOMATIC_INDEX */
}
#endif /* !defined(SQLITE_OMIT_VIRTUALTABLE) */
-
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
/*
** Estimate the location of a particular key among all keys in an
** index. Store the results in aStat as follows:
**
-** aStat[0] Est. number of rows less than pVal
-** aStat[1] Est. number of rows equal to pVal
+** aStat[0] Est. number of rows less than pRec
+** aStat[1] Est. number of rows equal to pRec
**
-** Return SQLITE_OK on success.
+** Return the index of the sample that is the smallest sample that
+** is greater than or equal to pRec. Note that this index is not an index
+** into the aSample[] array - it is an index into a virtual set of samples
+** based on the contents of aSample[] and the number of fields in record
+** pRec.
*/
-static void whereKeyStats(
+static int whereKeyStats(
Parse *pParse, /* Database connection */
Index *pIdx, /* Index to consider domain of */
UnpackedRecord *pRec, /* Vector of values to consider */
){
IndexSample *aSample = pIdx->aSample;
int iCol; /* Index of required stats in anEq[] etc. */
+ int i; /* Index of first sample >= pRec */
+ int iSample; /* Smallest sample larger than or equal to pRec */
int iMin = 0; /* Smallest sample not yet tested */
- int i = pIdx->nSample; /* Smallest sample larger than or equal to pRec */
int iTest; /* Next sample to test */
int res; /* Result of comparison operation */
+ int nField; /* Number of fields in pRec */
+ tRowcnt iLower = 0; /* anLt[] + anEq[] of largest sample pRec is > */
#ifndef SQLITE_DEBUG
UNUSED_PARAMETER( pParse );
#endif
assert( pRec!=0 );
- iCol = pRec->nField - 1;
assert( pIdx->nSample>0 );
- assert( pRec->nField>0 && iCol<pIdx->nSampleCol );
+ assert( pRec->nField>0 && pRec->nField<=pIdx->nSampleCol );
+
+ /* Do a binary search to find the first sample greater than or equal
+ ** to pRec. If pRec contains a single field, the set of samples to search
+ ** is simply the aSample[] array. If the samples in aSample[] contain more
+ ** than one fields, all fields following the first are ignored.
+ **
+ ** If pRec contains N fields, where N is more than one, then as well as the
+ ** samples in aSample[] (truncated to N fields), the search also has to
+ ** consider prefixes of those samples. For example, if the set of samples
+ ** in aSample is:
+ **
+ ** aSample[0] = (a, 5)
+ ** aSample[1] = (a, 10)
+ ** aSample[2] = (b, 5)
+ ** aSample[3] = (c, 100)
+ ** aSample[4] = (c, 105)
+ **
+ ** Then the search space should ideally be the samples above and the
+ ** unique prefixes [a], [b] and [c]. But since that is hard to organize,
+ ** the code actually searches this set:
+ **
+ ** 0: (a)
+ ** 1: (a, 5)
+ ** 2: (a, 10)
+ ** 3: (a, 10)
+ ** 4: (b)
+ ** 5: (b, 5)
+ ** 6: (c)
+ ** 7: (c, 100)
+ ** 8: (c, 105)
+ ** 9: (c, 105)
+ **
+ ** For each sample in the aSample[] array, N samples are present in the
+ ** effective sample array. In the above, samples 0 and 1 are based on
+ ** sample aSample[0]. Samples 2 and 3 on aSample[1] etc.
+ **
+ ** Often, sample i of each block of N effective samples has (i+1) fields.
+ ** Except, each sample may be extended to ensure that it is greater than or
+ ** equal to the previous sample in the array. For example, in the above,
+ ** sample 2 is the first sample of a block of N samples, so at first it
+ ** appears that it should be 1 field in size. However, that would make it
+ ** smaller than sample 1, so the binary search would not work. As a result,
+ ** it is extended to two fields. The duplicates that this creates do not
+ ** cause any problems.
+ */
+ nField = pRec->nField;
+ iCol = 0;
+ iSample = pIdx->nSample * nField;
do{
- iTest = (iMin+i)/2;
- res = sqlite3VdbeRecordCompare(aSample[iTest].n, aSample[iTest].p, pRec);
+ int iSamp; /* Index in aSample[] of test sample */
+ int n; /* Number of fields in test sample */
+
+ iTest = (iMin+iSample)/2;
+ iSamp = iTest / nField;
+ if( iSamp>0 ){
+ /* The proposed effective sample is a prefix of sample aSample[iSamp].
+ ** Specifically, the shortest prefix of at least (1 + iTest%nField)
+ ** fields that is greater than the previous effective sample. */
+ for(n=(iTest % nField) + 1; n<nField; n++){
+ if( aSample[iSamp-1].anLt[n-1]!=aSample[iSamp].anLt[n-1] ) break;
+ }
+ }else{
+ n = iTest + 1;
+ }
+
+ pRec->nField = n;
+ res = sqlite3VdbeRecordCompare(aSample[iSamp].n, aSample[iSamp].p, pRec);
if( res<0 ){
+ iLower = aSample[iSamp].anLt[n-1] + aSample[iSamp].anEq[n-1];
+ iMin = iTest+1;
+ }else if( res==0 && n<nField ){
+ iLower = aSample[iSamp].anLt[n-1];
iMin = iTest+1;
+ res = -1;
}else{
- i = iTest;
+ iSample = iTest;
+ iCol = n-1;
}
- }while( res && iMin<i );
+ }while( res && iMin<iSample );
+ i = iSample / nField;
#ifdef SQLITE_DEBUG
/* The following assert statements check that the binary search code
** above found the right answer. This block serves no purpose other
** than to invoke the asserts. */
- if( res==0 ){
- /* If (res==0) is true, then sample $i must be equal to pRec */
- assert( i<pIdx->nSample );
- assert( 0==sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)
- || pParse->db->mallocFailed );
- }else{
- /* Otherwise, pRec must be smaller than sample $i and larger than
- ** sample ($i-1). */
- assert( i==pIdx->nSample
- || sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)>0
- || pParse->db->mallocFailed );
- assert( i==0
- || sqlite3VdbeRecordCompare(aSample[i-1].n, aSample[i-1].p, pRec)<0
- || pParse->db->mallocFailed );
+ if( pParse->db->mallocFailed==0 ){
+ if( res==0 ){
+ /* If (res==0) is true, then pRec must be equal to sample i. */
+ assert( i<pIdx->nSample );
+ assert( iCol==nField-1 );
+ pRec->nField = nField;
+ assert( 0==sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)
+ || pParse->db->mallocFailed
+ );
+ }else{
+ /* Unless i==pIdx->nSample, indicating that pRec is larger than
+ ** all samples in the aSample[] array, pRec must be smaller than the
+ ** (iCol+1) field prefix of sample i. */
+ assert( i<=pIdx->nSample && i>=0 );
+ pRec->nField = iCol+1;
+ assert( i==pIdx->nSample
+ || sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)>0
+ || pParse->db->mallocFailed );
+
+ /* if i==0 and iCol==0, then record pRec is smaller than all samples
+ ** in the aSample[] array. Otherwise, if (iCol>0) then pRec must
+ ** be greater than or equal to the (iCol) field prefix of sample i.
+ ** If (i>0), then pRec must also be greater than sample (i-1). */
+ if( iCol>0 ){
+ pRec->nField = iCol;
+ assert( sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)<=0
+ || pParse->db->mallocFailed );
+ }
+ if( i>0 ){
+ pRec->nField = nField;
+ assert( sqlite3VdbeRecordCompare(aSample[i-1].n, aSample[i-1].p, pRec)<0
+ || pParse->db->mallocFailed );
+ }
+ }
}
#endif /* ifdef SQLITE_DEBUG */
- /* At this point, aSample[i] is the first sample that is greater than
- ** or equal to pVal. Or if i==pIdx->nSample, then all samples are less
- ** than pVal. If aSample[i]==pVal, then res==0.
- */
if( res==0 ){
+ /* Record pRec is equal to sample i */
+ assert( iCol==nField-1 );
aStat[0] = aSample[i].anLt[iCol];
aStat[1] = aSample[i].anEq[iCol];
}else{
- tRowcnt iLower, iUpper, iGap;
- if( i==0 ){
- iLower = 0;
- iUpper = aSample[0].anLt[iCol];
+ /* At this point, the (iCol+1) field prefix of aSample[i] is the first
+ ** sample that is greater than pRec. Or, if i==pIdx->nSample then pRec
+ ** is larger than all samples in the array. */
+ tRowcnt iUpper, iGap;
+ if( i>=pIdx->nSample ){
+ iUpper = sqlite3LogEstToInt(pIdx->aiRowLogEst[0]);
}else{
- i64 nRow0 = sqlite3LogEstToInt(pIdx->aiRowLogEst[0]);
- iUpper = i>=pIdx->nSample ? nRow0 : aSample[i].anLt[iCol];
- iLower = aSample[i-1].anEq[iCol] + aSample[i-1].anLt[iCol];
+ iUpper = aSample[i].anLt[iCol];
}
- aStat[1] = pIdx->aAvgEq[iCol];
+
if( iLower>=iUpper ){
iGap = 0;
}else{
iGap = iGap/3;
}
aStat[0] = iLower + iGap;
+ aStat[1] = pIdx->aAvgEq[iCol];
}
+
+ /* Restore the pRec->nField value before returning. */
+ pRec->nField = nField;
+ return i;
}
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */
** If either of the upper or lower bound is not present, then NULL is passed in
** place of the corresponding WhereTerm.
**
-** The value in (pBuilder->pNew->u.btree.nEq) is the index of the index
+** The value in (pBuilder->pNew->u.btree.nEq) is the number of the index
** column subject to the range constraint. Or, equivalently, the number of
** equality constraints optimized by the proposed index scan. For example,
** assuming index p is on t1(a, b), and the SQL query is:
**
** When this function is called, *pnOut is set to the sqlite3LogEst() of the
** number of rows that the index scan is expected to visit without
-** considering the range constraints. If nEq is 0, this is the number of
+** considering the range constraints. If nEq is 0, then *pnOut is the number of
** rows in the index. Assuming no error occurs, *pnOut is adjusted (reduced)
** to account for the range constraints pLower and pUpper.
**
Index *p = pLoop->u.btree.pIndex;
int nEq = pLoop->u.btree.nEq;
- if( p->nSample>0
- && nEq<p->nSampleCol
- && OptimizationEnabled(pParse->db, SQLITE_Stat3)
- ){
+ if( p->nSample>0 && nEq<p->nSampleCol ){
if( nEq==pBuilder->nRecValid ){
UnpackedRecord *pRec = pBuilder->pRec;
tRowcnt a[2];
** is not a simple variable or literal value), the lower bound of the
** range is $P. Due to a quirk in the way whereKeyStats() works, even
** if $L is available, whereKeyStats() is called for both ($P) and
- ** ($P:$L) and the larger of the two returned values used.
+ ** ($P:$L) and the larger of the two returned values is used.
**
** Similarly, iUpper is to be set to the estimate of the number of rows
** less than the upper bound of the range query. Where the upper bound
** is either ($P) or ($P:$U). Again, even if $U is available, both values
** of iUpper are requested of whereKeyStats() and the smaller used.
+ **
+ ** The number of rows between the two bounds is then just iUpper-iLower.
*/
- tRowcnt iLower;
- tRowcnt iUpper;
+ tRowcnt iLower; /* Rows less than the lower bound */
+ tRowcnt iUpper; /* Rows less than the upper bound */
+ int iLwrIdx = -2; /* aSample[] for the lower bound */
+ int iUprIdx = -1; /* aSample[] for the upper bound */
if( pRec ){
testcase( pRec->nField!=pBuilder->nRecValid );
/* Determine iLower and iUpper using ($P) only. */
if( nEq==0 ){
iLower = 0;
- iUpper = sqlite3LogEstToInt(p->aiRowLogEst[0]);
+ iUpper = p->nRowEst0;
}else{
/* Note: this call could be optimized away - since the same values must
** have been requested when testing key $P in whereEqualScanEst(). */
rc = sqlite3Stat4ProbeSetValue(pParse, p, &pRec, pExpr, aff, nEq, &bOk);
if( rc==SQLITE_OK && bOk ){
tRowcnt iNew;
- whereKeyStats(pParse, p, pRec, 0, a);
+ iLwrIdx = whereKeyStats(pParse, p, pRec, 0, a);
iNew = a[0] + ((pLower->eOperator & (WO_GT|WO_LE)) ? a[1] : 0);
if( iNew>iLower ) iLower = iNew;
nOut--;
rc = sqlite3Stat4ProbeSetValue(pParse, p, &pRec, pExpr, aff, nEq, &bOk);
if( rc==SQLITE_OK && bOk ){
tRowcnt iNew;
- whereKeyStats(pParse, p, pRec, 1, a);
+ iUprIdx = whereKeyStats(pParse, p, pRec, 1, a);
iNew = a[0] + ((pUpper->eOperator & (WO_GT|WO_LE)) ? a[1] : 0);
if( iNew<iUpper ) iUpper = iNew;
nOut--;
if( rc==SQLITE_OK ){
if( iUpper>iLower ){
nNew = sqlite3LogEst(iUpper - iLower);
+ /* TUNING: If both iUpper and iLower are derived from the same
+ ** sample, then assume they are 4x more selective. This brings
+ ** the estimated selectivity more in line with what it would be
+ ** if estimated without the use of STAT3/4 tables. */
+ if( iLwrIdx==iUprIdx ) nNew -= 20; assert( 20==sqlite3LogEst(4) );
}else{
nNew = 10; assert( 10==sqlite3LogEst(2) );
}
nNew = whereRangeAdjust(pLower, nOut);
nNew = whereRangeAdjust(pUpper, nNew);
- /* TUNING: If there is both an upper and lower limit, assume the range is
+ /* TUNING: If there is both an upper and lower limit and neither limit
+ ** has an application-defined likelihood(), assume the range is
** reduced by an additional 75%. This means that, by default, an open-ended
** range query (e.g. col > ?) is assumed to match 1/4 of the rows in the
** index. While a closed range (e.g. col BETWEEN ? AND ?) is estimated to
** match 1/64 of the index. */
- if( pLower && pUpper ) nNew -= 20;
+ if( pLower && pLower->truthProb>0 && pUpper && pUpper->truthProb>0 ){
+ nNew -= 20;
+ }
nOut -= (pLower!=0) + (pUpper!=0);
if( nNew<10 ) nNew = 10;
** but joins might run a little slower. The trick is to disable as much
** as we can without disabling too much. If we disabled in (1), we'd get
** the wrong answer. See ticket #813.
+**
+** If all the children of a term are disabled, then that term is also
+** automatically disabled. In this way, terms get disabled if derived
+** virtual terms are tested first. For example:
+**
+** x GLOB 'abc*' AND x>='abc' AND x<'acd'
+** \___________/ \______/ \_____/
+** parent child1 child2
+**
+** Only the parent term was in the original WHERE clause. The child1
+** and child2 terms were added by the LIKE optimization. If both of
+** the virtual child terms are valid, then testing of the parent can be
+** skipped.
+**
+** Usually the parent term is marked as TERM_CODED. But if the parent
+** term was originally TERM_LIKE, then the parent gets TERM_LIKECOND instead.
+** The TERM_LIKECOND marking indicates that the term should be coded inside
+** a conditional such that is only evaluated on the second pass of a
+** LIKE-optimization loop, when scanning BLOBs instead of strings.
*/
static void disableTerm(WhereLevel *pLevel, WhereTerm *pTerm){
- if( pTerm
+ int nLoop = 0;
+ while( pTerm
&& (pTerm->wtFlags & TERM_CODED)==0
&& (pLevel->iLeftJoin==0 || ExprHasProperty(pTerm->pExpr, EP_FromJoin))
&& (pLevel->notReady & pTerm->prereqAll)==0
){
- pTerm->wtFlags |= TERM_CODED;
- if( pTerm->iParent>=0 ){
- WhereTerm *pOther = &pTerm->pWC->a[pTerm->iParent];
- if( (--pOther->nChild)==0 ){
- disableTerm(pLevel, pOther);
- }
+ if( nLoop && (pTerm->wtFlags & TERM_LIKE)!=0 ){
+ pTerm->wtFlags |= TERM_LIKECOND;
+ }else{
+ pTerm->wtFlags |= TERM_CODED;
}
+ if( pTerm->iParent<0 ) break;
+ pTerm = &pTerm->pWC->a[pTerm->iParent];
+ pTerm->nChild--;
+ if( pTerm->nChild!=0 ) break;
+ nLoop++;
}
}
pLoop = pLevel->pWLoop;
assert( (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 );
nEq = pLoop->u.btree.nEq;
- nSkip = pLoop->u.btree.nSkip;
+ nSkip = pLoop->nSkip;
pIdx = pLoop->u.btree.pIndex;
assert( pIdx!=0 );
static void explainIndexRange(StrAccum *pStr, WhereLoop *pLoop, Table *pTab){
Index *pIndex = pLoop->u.btree.pIndex;
u16 nEq = pLoop->u.btree.nEq;
- u16 nSkip = pLoop->u.btree.nSkip;
+ u16 nSkip = pLoop->nSkip;
int i, j;
Column *aCol = pTab->aCol;
i16 *aiColumn = pIndex->aiColumn;
/*
** This function is a no-op unless currently processing an EXPLAIN QUERY PLAN
-** command. If the query being compiled is an EXPLAIN QUERY PLAN, a single
-** record is added to the output to describe the table scan strategy in
-** pLevel.
+** command, or if either SQLITE_DEBUG or SQLITE_ENABLE_STMT_SCANSTATUS was
+** defined at compile-time. If it is not a no-op, a single OP_Explain opcode
+** is added to the output to describe the table scan strategy in pLevel.
+**
+** If an OP_Explain opcode is added to the VM, its address is returned.
+** Otherwise, if no OP_Explain is coded, zero is returned.
*/
-static void explainOneScan(
+static int explainOneScan(
Parse *pParse, /* Parse context */
SrcList *pTabList, /* Table list this loop refers to */
WhereLevel *pLevel, /* Scan to write OP_Explain opcode for */
int iFrom, /* Value for "from" column of output */
u16 wctrlFlags /* Flags passed to sqlite3WhereBegin() */
){
-#ifndef SQLITE_DEBUG
+ int ret = 0;
+#if !defined(SQLITE_DEBUG) && !defined(SQLITE_ENABLE_STMT_SCANSTATUS)
if( pParse->explain==2 )
#endif
{
pLoop = pLevel->pWLoop;
flags = pLoop->wsFlags;
- if( (flags&WHERE_MULTI_OR) || (wctrlFlags&WHERE_ONETABLE_ONLY) ) return;
+ if( (flags&WHERE_MULTI_OR) || (wctrlFlags&WHERE_ONETABLE_ONLY) ) return 0;
isSearch = (flags&(WHERE_BTM_LIMIT|WHERE_TOP_LIMIT))!=0
|| ((flags&WHERE_VIRTUALTABLE)==0 && (pLoop->u.btree.nEq>0))
if( isSearch ){
zFmt = "PRIMARY KEY";
}
+ }else if( flags & WHERE_PARTIALIDX ){
+ zFmt = "AUTOMATIC PARTIAL COVERING INDEX";
}else if( flags & WHERE_AUTO_INDEX ){
zFmt = "AUTOMATIC COVERING INDEX";
}else if( flags & WHERE_IDX_ONLY ){
}
#endif
zMsg = sqlite3StrAccumFinish(&str);
- sqlite3VdbeAddOp4(v, OP_Explain, iId, iLevel, iFrom, zMsg, P4_DYNAMIC);
+ ret = sqlite3VdbeAddOp4(v, OP_Explain, iId, iLevel, iFrom, zMsg,P4_DYNAMIC);
}
+ return ret;
}
#else
-# define explainOneScan(u,v,w,x,y,z)
+# define explainOneScan(u,v,w,x,y,z) 0
#endif /* SQLITE_OMIT_EXPLAIN */
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+/*
+** Configure the VM passed as the first argument with an
+** sqlite3_stmt_scanstatus() entry corresponding to the scan used to
+** implement level pLvl. Argument pSrclist is a pointer to the FROM
+** clause that the scan reads data from.
+**
+** If argument addrExplain is not 0, it must be the address of an
+** OP_Explain instruction that describes the same loop.
+*/
+static void addScanStatus(
+ Vdbe *v, /* Vdbe to add scanstatus entry to */
+ SrcList *pSrclist, /* FROM clause pLvl reads data from */
+ WhereLevel *pLvl, /* Level to add scanstatus() entry for */
+ int addrExplain /* Address of OP_Explain (or 0) */
+){
+ const char *zObj = 0;
+ WhereLoop *pLoop = pLvl->pWLoop;
+ if( (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 && pLoop->u.btree.pIndex!=0 ){
+ zObj = pLoop->u.btree.pIndex->zName;
+ }else{
+ zObj = pSrclist->a[pLvl->iFrom].zName;
+ }
+ sqlite3VdbeScanStatus(
+ v, addrExplain, pLvl->addrBody, pLvl->addrVisit, pLoop->nOut, zObj
+ );
+}
+#else
+# define addScanStatus(a, b, c, d) ((void)d)
+#endif
+
+/*
+** If the most recently coded instruction is a constant range contraint
+** that originated from the LIKE optimization, then change the P3 to be
+** pLoop->iLikeRepCntr and set P5.
+**
+** The LIKE optimization trys to evaluate "x LIKE 'abc%'" as a range
+** expression: "x>='ABC' AND x<'abd'". But this requires that the range
+** scan loop run twice, once for strings and a second time for BLOBs.
+** The OP_String opcodes on the second pass convert the upper and lower
+** bound string contants to blobs. This routine makes the necessary changes
+** to the OP_String opcodes for that to happen.
+*/
+static void whereLikeOptimizationStringFixup(
+ Vdbe *v, /* prepared statement under construction */
+ WhereLevel *pLevel, /* The loop that contains the LIKE operator */
+ WhereTerm *pTerm /* The upper or lower bound just coded */
+){
+ if( pTerm->wtFlags & TERM_LIKEOPT ){
+ VdbeOp *pOp;
+ assert( pLevel->iLikeRepCntr>0 );
+ pOp = sqlite3VdbeGetOp(v, -1);
+ assert( pOp!=0 );
+ assert( pOp->opcode==OP_String8
+ || pTerm->pWC->pWInfo->pParse->db->mallocFailed );
+ pOp->p3 = pLevel->iLikeRepCntr;
+ pOp->p5 = 1;
+ }
+}
/*
** Generate code for the start of the iLevel-th loop in the WHERE clause
pIdx = pLoop->u.btree.pIndex;
iIdxCur = pLevel->iIdxCur;
- assert( nEq>=pLoop->u.btree.nSkip );
+ assert( nEq>=pLoop->nSkip );
/* If this loop satisfies a sort order (pOrderBy) request that
** was passed to this function to implement a "SELECT min(x) ..."
&& pWInfo->nOBSat>0
&& (pIdx->nKeyCol>nEq)
){
- assert( pLoop->u.btree.nSkip==0 );
+ assert( pLoop->nSkip==0 );
bSeekPastNull = 1;
nExtraReg = 1;
}
if( pLoop->wsFlags & WHERE_BTM_LIMIT ){
pRangeStart = pLoop->aLTerm[j++];
nExtraReg = 1;
+ /* Like optimization range constraints always occur in pairs */
+ assert( (pRangeStart->wtFlags & TERM_LIKEOPT)==0 ||
+ (pLoop->wsFlags & WHERE_TOP_LIMIT)!=0 );
}
if( pLoop->wsFlags & WHERE_TOP_LIMIT ){
pRangeEnd = pLoop->aLTerm[j++];
nExtraReg = 1;
+ if( (pRangeEnd->wtFlags & TERM_LIKEOPT)!=0 ){
+ assert( pRangeStart!=0 ); /* LIKE opt constraints */
+ assert( pRangeStart->wtFlags & TERM_LIKEOPT ); /* occur in pairs */
+ pLevel->iLikeRepCntr = ++pParse->nMem;
+ testcase( bRev );
+ testcase( pIdx->aSortOrder[nEq]==SQLITE_SO_DESC );
+ sqlite3VdbeAddOp2(v, OP_Integer,
+ bRev ^ (pIdx->aSortOrder[nEq]==SQLITE_SO_DESC),
+ pLevel->iLikeRepCntr);
+ VdbeComment((v, "LIKE loop counter"));
+ pLevel->addrLikeRep = sqlite3VdbeCurrentAddr(v);
+ }
if( pRangeStart==0
&& (j = pIdx->aiColumn[nEq])>=0
&& pIdx->pTable->aCol[j].notNull==0
if( pRangeStart ){
Expr *pRight = pRangeStart->pExpr->pRight;
sqlite3ExprCode(pParse, pRight, regBase+nEq);
+ whereLikeOptimizationStringFixup(v, pLevel, pRangeStart);
if( (pRangeStart->wtFlags & TERM_VNULL)==0
&& sqlite3ExprCanBeNull(pRight)
){
Expr *pRight = pRangeEnd->pExpr->pRight;
sqlite3ExprCacheRemove(pParse, regBase+nEq, 1);
sqlite3ExprCode(pParse, pRight, regBase+nEq);
+ whereLikeOptimizationStringFixup(v, pLevel, pRangeEnd);
if( (pRangeEnd->wtFlags & TERM_VNULL)==0
&& sqlite3ExprCanBeNull(pRight)
){
Expr *pExpr = pWC->a[iTerm].pExpr;
if( &pWC->a[iTerm] == pTerm ) continue;
if( ExprHasProperty(pExpr, EP_FromJoin) ) continue;
- testcase( pWC->a[iTerm].wtFlags & TERM_ORINFO );
- testcase( pWC->a[iTerm].wtFlags & TERM_VIRTUAL );
- if( pWC->a[iTerm].wtFlags & (TERM_ORINFO|TERM_VIRTUAL) ) continue;
+ if( (pWC->a[iTerm].wtFlags & TERM_VIRTUAL)!=0 ) continue;
if( (pWC->a[iTerm].eOperator & WO_ALL)==0 ) continue;
+ testcase( pWC->a[iTerm].wtFlags & TERM_ORINFO );
pExpr = sqlite3ExprDup(db, pExpr, 0);
pAndExpr = sqlite3ExprAnd(db, pAndExpr, pExpr);
}
*/
wctrlFlags = WHERE_OMIT_OPEN_CLOSE
| WHERE_FORCE_TABLE
- | WHERE_ONETABLE_ONLY;
+ | WHERE_ONETABLE_ONLY
+ | WHERE_NO_AUTOINDEX;
for(ii=0; ii<pOrWc->nTerm; ii++){
WhereTerm *pOrTerm = &pOrWc->a[ii];
if( pOrTerm->leftCursor==iCur || (pOrTerm->eOperator & WO_AND)!=0 ){
assert( pSubWInfo || pParse->nErr || db->mallocFailed );
if( pSubWInfo ){
WhereLoop *pSubLoop;
- explainOneScan(
+ int addrExplain = explainOneScan(
pParse, pOrTab, &pSubWInfo->a[0], iLevel, pLevel->iFrom, 0
);
+ addScanStatus(v, pOrTab, &pSubWInfo->a[0], addrExplain);
+
/* This is the sub-WHERE clause body. First skip over
** duplicate rows from prior sub-WHERE clauses, and record the
** rowid (or PRIMARY KEY) for the current row so that the same
}
}
+#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
+ pLevel->addrVisit = sqlite3VdbeCurrentAddr(v);
+#endif
+
/* Insert code to test every subexpression that can be completely
** computed using the current set of tables.
*/
for(pTerm=pWC->a, j=pWC->nTerm; j>0; j--, pTerm++){
Expr *pE;
+ int skipLikeAddr = 0;
testcase( pTerm->wtFlags & TERM_VIRTUAL );
testcase( pTerm->wtFlags & TERM_CODED );
if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue;
if( pLevel->iLeftJoin && !ExprHasProperty(pE, EP_FromJoin) ){
continue;
}
+ if( pTerm->wtFlags & TERM_LIKECOND ){
+ assert( pLevel->iLikeRepCntr>0 );
+ skipLikeAddr = sqlite3VdbeAddOp1(v, OP_IfNot, pLevel->iLikeRepCntr);
+ VdbeCoverage(v);
+ }
sqlite3ExprIfFalse(pParse, pE, addrCont, SQLITE_JUMPIFNULL);
+ if( skipLikeAddr ) sqlite3VdbeJumpHere(v, skipLikeAddr);
pTerm->wtFlags |= TERM_CODED;
}
sqlite3_free(z);
}
if( p->wsFlags & WHERE_SKIPSCAN ){
- sqlite3DebugPrintf(" f %05x %d-%d", p->wsFlags, p->nLTerm,p->u.btree.nSkip);
+ sqlite3DebugPrintf(" f %05x %d-%d", p->wsFlags, p->nLTerm,p->nSkip);
}else{
sqlite3DebugPrintf(" f %05x N %d", p->wsFlags, p->nLTerm);
}
p->u.vtab.idxStr = 0;
}else if( (p->wsFlags & WHERE_AUTO_INDEX)!=0 && p->u.btree.pIndex!=0 ){
sqlite3DbFree(db, p->u.btree.pIndex->zColAff);
- sqlite3KeyInfoUnref(p->u.btree.pIndex->pKeyInfo);
sqlite3DbFree(db, p->u.btree.pIndex);
p->u.btree.pIndex = 0;
}
}
/*
-** Return TRUE if both of the following are true:
+** Return TRUE if all of the following are true:
**
** (1) X has the same or lower cost that Y
** (2) X is a proper subset of Y
+** (3) X skips at least as many columns as Y
**
** By "proper subset" we mean that X uses fewer WHERE clause terms
** than Y and that every WHERE clause term used by X is also used
**
** If X is a proper subset of Y then Y is a better choice and ought
** to have a lower cost. This routine returns TRUE when that cost
-** relationship is inverted and needs to be adjusted.
+** relationship is inverted and needs to be adjusted. The third rule
+** was added because if X uses skip-scan less than Y it still might
+** deserve a lower cost even if it is a proper subset of Y.
*/
static int whereLoopCheaperProperSubset(
const WhereLoop *pX, /* First WhereLoop to compare */
const WhereLoop *pY /* Compare against this WhereLoop */
){
int i, j;
- if( pX->nLTerm >= pY->nLTerm ) return 0; /* X is not a subset of Y */
+ if( pX->nLTerm-pX->nSkip >= pY->nLTerm-pY->nSkip ){
+ return 0; /* X is not a subset of Y */
+ }
+ if( pY->nSkip > pX->nSkip ) return 0;
if( pX->rRun >= pY->rRun ){
if( pX->rRun > pY->rRun ) return 0; /* X costs more than Y */
if( pX->nOut > pY->nOut ) return 0; /* X costs more than Y */
}
for(i=pX->nLTerm-1; i>=0; i--){
+ if( pX->aLTerm[i]==0 ) continue;
for(j=pY->nLTerm-1; j>=0; j--){
if( pY->aLTerm[j]==pX->aLTerm[i] ) break;
}
** To say "WhereLoop X is a proper subset of Y" means that X uses fewer
** WHERE clause terms than Y and that every WHERE clause term used by X is
** also used by Y.
-**
-** This adjustment is omitted for SKIPSCAN loops. In a SKIPSCAN loop, the
-** WhereLoop.nLTerm field is not an accurate measure of the number of WHERE
-** clause terms covered, since some of the first nLTerm entries in aLTerm[]
-** will be NULL (because they are skipped). That makes it more difficult
-** to compare the loops. We could add extra code to do the comparison, and
-** perhaps we will someday. But SKIPSCAN is sufficiently uncommon, and this
-** adjustment is sufficient minor, that it is very difficult to construct
-** a test case where the extra code would improve the query plan. Better
-** to avoid the added complexity and just omit cost adjustments to SKIPSCAN
-** loops.
*/
static void whereLoopAdjustCost(const WhereLoop *p, WhereLoop *pTemplate){
if( (pTemplate->wsFlags & WHERE_INDEXED)==0 ) return;
- if( (pTemplate->wsFlags & WHERE_SKIPSCAN)!=0 ) return;
for(; p; p=p->pNextLoop){
if( p->iTab!=pTemplate->iTab ) continue;
if( (p->wsFlags & WHERE_INDEXED)==0 ) continue;
- if( (p->wsFlags & WHERE_SKIPSCAN)!=0 ) continue;
if( whereLoopCheaperProperSubset(p, pTemplate) ){
/* Adjust pTemplate cost downward so that it is cheaper than its
- ** subset p */
+ ** subset p. */
+ WHERETRACE(0x80,("subset cost adjustment %d,%d to %d,%d\n",
+ pTemplate->rRun, pTemplate->nOut, p->rRun, p->nOut-1));
pTemplate->rRun = p->rRun;
pTemplate->nOut = p->nOut - 1;
}else if( whereLoopCheaperProperSubset(pTemplate, p) ){
/* Adjust pTemplate cost upward so that it is costlier than p since
** pTemplate is a proper subset of p */
+ WHERETRACE(0x80,("subset cost adjustment %d,%d to %d,%d\n",
+ pTemplate->rRun, pTemplate->nOut, p->rRun, p->nOut+1));
pTemplate->rRun = p->rRun;
pTemplate->nOut = p->nOut + 1;
}
/* Any loop using an appliation-defined index (or PRIMARY KEY or
** UNIQUE constraint) with one or more == constraints is better
- ** than an automatic index. */
+ ** than an automatic index. Unless it is a skip-scan. */
if( (p->wsFlags & WHERE_AUTO_INDEX)!=0
+ && (pTemplate->nSkip)==0
&& (pTemplate->wsFlags & WHERE_INDEXED)!=0
&& (pTemplate->wsFlags & WHERE_COLUMN_EQ)!=0
&& (p->prereq & pTemplate->prereq)==pTemplate->prereq
** Adjust the WhereLoop.nOut value downward to account for terms of the
** WHERE clause that reference the loop but which are not used by an
** index.
-**
-** In the current implementation, the first extra WHERE clause term reduces
-** the number of output rows by a factor of 10 and each additional term
-** reduces the number of output rows by sqrt(2).
+*
+** For every WHERE clause term that is not used by the index
+** and which has a truth probability assigned by one of the likelihood(),
+** likely(), or unlikely() SQL functions, reduce the estimated number
+** of output rows by the probability specified.
+**
+** TUNING: For every WHERE clause term that is not used by the index
+** and which does not have an assigned truth probability, heuristics
+** described below are used to try to estimate the truth probability.
+** TODO --> Perhaps this is something that could be improved by better
+** table statistics.
+**
+** Heuristic 1: Estimate the truth probability as 93.75%. The 93.75%
+** value corresponds to -1 in LogEst notation, so this means decrement
+** the WhereLoop.nOut field for every such WHERE clause term.
+**
+** Heuristic 2: If there exists one or more WHERE clause terms of the
+** form "x==EXPR" and EXPR is not a constant 0 or 1, then make sure the
+** final output row estimate is no greater than 1/4 of the total number
+** of rows in the table. In other words, assume that x==EXPR will filter
+** out at least 3 out of 4 rows. If EXPR is -1 or 0 or 1, then maybe the
+** "x" column is boolean or else -1 or 0 or 1 is a common default value
+** on the "x" column and so in that case only cap the output row estimate
+** at 1/2 instead of 1/4.
*/
static void whereLoopOutputAdjust(
WhereClause *pWC, /* The WHERE clause */
){
WhereTerm *pTerm, *pX;
Bitmask notAllowed = ~(pLoop->prereq|pLoop->maskSelf);
- int i, j;
- int nEq = 0; /* Number of = constraints not within likely()/unlikely() */
+ int i, j, k;
+ LogEst iReduce = 0; /* pLoop->nOut should not exceed nRow-iReduce */
+ assert( (pLoop->wsFlags & WHERE_AUTO_INDEX)==0 );
for(i=pWC->nTerm, pTerm=pWC->a; i>0; i--, pTerm++){
if( (pTerm->wtFlags & TERM_VIRTUAL)!=0 ) break;
if( (pTerm->prereqAll & pLoop->maskSelf)==0 ) continue;
}
if( j<0 ){
if( pTerm->truthProb<=0 ){
+ /* If a truth probability is specified using the likelihood() hints,
+ ** then use the probability provided by the application. */
pLoop->nOut += pTerm->truthProb;
}else{
+ /* In the absence of explicit truth probabilities, use heuristics to
+ ** guess a reasonable truth probability. */
pLoop->nOut--;
- if( pTerm->eOperator&WO_EQ ) nEq++;
+ if( pTerm->eOperator&WO_EQ ){
+ Expr *pRight = pTerm->pExpr->pRight;
+ if( sqlite3ExprIsInteger(pRight, &k) && k>=(-1) && k<=1 ){
+ k = 10;
+ }else{
+ k = 20;
+ }
+ if( iReduce<k ) iReduce = k;
+ }
}
}
}
- /* TUNING: If there is at least one equality constraint in the WHERE
- ** clause that does not have a likelihood() explicitly assigned to it
- ** then do not let the estimated number of output rows exceed half
- ** the number of rows in the table. */
- if( nEq && pLoop->nOut>nRow-10 ){
- pLoop->nOut = nRow - 10;
- }
+ if( pLoop->nOut > nRow-iReduce ) pLoop->nOut = nRow - iReduce;
}
/*
Bitmask saved_prereq; /* Original value of pNew->prereq */
u16 saved_nLTerm; /* Original value of pNew->nLTerm */
u16 saved_nEq; /* Original value of pNew->u.btree.nEq */
- u16 saved_nSkip; /* Original value of pNew->u.btree.nSkip */
+ u16 saved_nSkip; /* Original value of pNew->nSkip */
u32 saved_wsFlags; /* Original value of pNew->wsFlags */
LogEst saved_nOut; /* Original value of pNew->nOut */
int iCol; /* Index of the column in the table */
pTerm = whereScanInit(&scan, pBuilder->pWC, pSrc->iCursor, iCol,
opMask, pProbe);
saved_nEq = pNew->u.btree.nEq;
- saved_nSkip = pNew->u.btree.nSkip;
+ saved_nSkip = pNew->nSkip;
saved_nLTerm = pNew->nLTerm;
saved_wsFlags = pNew->wsFlags;
saved_prereq = pNew->prereq;
pNew->rSetup = 0;
rSize = pProbe->aiRowLogEst[0];
rLogSize = estLog(rSize);
-
- /* Consider using a skip-scan if there are no WHERE clause constraints
- ** available for the left-most terms of the index, and if the average
- ** number of repeats in the left-most terms is at least 18.
- **
- ** The magic number 18 is selected on the basis that scanning 17 rows
- ** is almost always quicker than an index seek (even though if the index
- ** contains fewer than 2^17 rows we assume otherwise in other parts of
- ** the code). And, even if it is not, it should not be too much slower.
- ** On the other hand, the extra seeks could end up being significantly
- ** more expensive. */
- assert( 42==sqlite3LogEst(18) );
- if( saved_nEq==saved_nSkip
- && saved_nEq+1<pProbe->nKeyCol
- && pProbe->aiRowLogEst[saved_nEq+1]>=42 /* TUNING: Minimum for skip-scan */
- && (rc = whereLoopResize(db, pNew, pNew->nLTerm+1))==SQLITE_OK
- ){
- LogEst nIter;
- pNew->u.btree.nEq++;
- pNew->u.btree.nSkip++;
- pNew->aLTerm[pNew->nLTerm++] = 0;
- pNew->wsFlags |= WHERE_SKIPSCAN;
- nIter = pProbe->aiRowLogEst[saved_nEq] - pProbe->aiRowLogEst[saved_nEq+1];
- if( pTerm ){
- /* TUNING: When estimating skip-scan for a term that is also indexable,
- ** multiply the cost of the skip-scan by 2.0, to make it a little less
- ** desirable than the regular index lookup. */
- nIter += 10; assert( 10==sqlite3LogEst(2) );
- }
- pNew->nOut -= nIter;
- /* TUNING: Because uncertainties in the estimates for skip-scan queries,
- ** add a 1.375 fudge factor to make skip-scan slightly less likely. */
- nIter += 5;
- whereLoopAddBtreeIndex(pBuilder, pSrc, pProbe, nIter + nInMul);
- pNew->nOut = saved_nOut;
- pNew->u.btree.nEq = saved_nEq;
- pNew->u.btree.nSkip = saved_nSkip;
- }
for(; rc==SQLITE_OK && pTerm!=0; pTerm = whereScanNext(&scan)){
u16 eOp = pTerm->eOperator; /* Shorthand for pTerm->eOperator */
LogEst rCostIdx;
}
if( pTerm->prereqRight & pNew->maskSelf ) continue;
+ /* Do not allow the upper bound of a LIKE optimization range constraint
+ ** to mix with a lower range bound from some other source */
+ if( pTerm->wtFlags & TERM_LIKEOPT && pTerm->eOperator==WO_LT ) continue;
+
pNew->wsFlags = saved_wsFlags;
pNew->u.btree.nEq = saved_nEq;
pNew->nLTerm = saved_nLTerm;
pNew->wsFlags |= WHERE_COLUMN_RANGE|WHERE_BTM_LIMIT;
pBtm = pTerm;
pTop = 0;
+ if( pTerm->wtFlags & TERM_LIKEOPT ){
+ /* Range contraints that come from the LIKE optimization are
+ ** always used in pairs. */
+ pTop = &pTerm[1];
+ assert( (pTop-(pTerm->pWC->a))<pTerm->pWC->nTerm );
+ assert( pTop->wtFlags & TERM_LIKEOPT );
+ assert( pTop->eOperator==WO_LT );
+ if( whereLoopResize(db, pNew, pNew->nLTerm+1) ) break; /* OOM */
+ pNew->aLTerm[pNew->nLTerm++] = pTop;
+ pNew->wsFlags |= WHERE_TOP_LIMIT;
+ }
}else{
assert( eOp & (WO_LT|WO_LE) );
testcase( eOp & WO_LT );
if( nInMul==0
&& pProbe->nSample
&& pNew->u.btree.nEq<=pProbe->nSampleCol
- && OptimizationEnabled(db, SQLITE_Stat3)
&& ((eOp & WO_IN)==0 || !ExprHasProperty(pTerm->pExpr, EP_xIsSelect))
){
Expr *pExpr = pTerm->pExpr;
}
pNew->prereq = saved_prereq;
pNew->u.btree.nEq = saved_nEq;
- pNew->u.btree.nSkip = saved_nSkip;
+ pNew->nSkip = saved_nSkip;
pNew->wsFlags = saved_wsFlags;
pNew->nOut = saved_nOut;
pNew->nLTerm = saved_nLTerm;
+
+ /* Consider using a skip-scan if there are no WHERE clause constraints
+ ** available for the left-most terms of the index, and if the average
+ ** number of repeats in the left-most terms is at least 18.
+ **
+ ** The magic number 18 is selected on the basis that scanning 17 rows
+ ** is almost always quicker than an index seek (even though if the index
+ ** contains fewer than 2^17 rows we assume otherwise in other parts of
+ ** the code). And, even if it is not, it should not be too much slower.
+ ** On the other hand, the extra seeks could end up being significantly
+ ** more expensive. */
+ assert( 42==sqlite3LogEst(18) );
+ if( saved_nEq==saved_nSkip
+ && saved_nEq+1<pProbe->nKeyCol
+ && pProbe->noSkipScan==0
+ && pProbe->aiRowLogEst[saved_nEq+1]>=42 /* TUNING: Minimum for skip-scan */
+ && (rc = whereLoopResize(db, pNew, pNew->nLTerm+1))==SQLITE_OK
+ ){
+ LogEst nIter;
+ pNew->u.btree.nEq++;
+ pNew->nSkip++;
+ pNew->aLTerm[pNew->nLTerm++] = 0;
+ pNew->wsFlags |= WHERE_SKIPSCAN;
+ nIter = pProbe->aiRowLogEst[saved_nEq] - pProbe->aiRowLogEst[saved_nEq+1];
+ pNew->nOut -= nIter;
+ /* TUNING: Because uncertainties in the estimates for skip-scan queries,
+ ** add a 1.375 fudge factor to make skip-scan slightly less likely. */
+ nIter += 5;
+ whereLoopAddBtreeIndex(pBuilder, pSrc, pProbe, nIter + nInMul);
+ pNew->nOut = saved_nOut;
+ pNew->u.btree.nEq = saved_nEq;
+ pNew->nSkip = saved_nSkip;
+ pNew->wsFlags = saved_wsFlags;
+ }
+
return rc;
}
int i;
WhereTerm *pTerm;
for(i=0, pTerm=pWC->a; i<pWC->nTerm; i++, pTerm++){
- if( sqlite3ExprImpliesExpr(pTerm->pExpr, pWhere, iTab) ) return 1;
+ Expr *pExpr = pTerm->pExpr;
+ if( sqlite3ExprImpliesExpr(pExpr, pWhere, iTab)
+ && (!ExprHasProperty(pExpr, EP_FromJoin) || pExpr->iRightJoinTable==iTab)
+ ){
+ return 1;
+ }
}
return 0;
}
#ifndef SQLITE_OMIT_AUTOMATIC_INDEX
/* Automatic indexes */
if( !pBuilder->pOrSet
+ && (pWInfo->wctrlFlags & WHERE_NO_AUTOINDEX)==0
&& (pWInfo->pParse->db->flags & SQLITE_AutoIndex)!=0
&& pSrc->pIndex==0
&& !pSrc->viaCoroutine
if( pTerm->prereqRight & pNew->maskSelf ) continue;
if( termCanDriveIndex(pTerm, pSrc, 0) ){
pNew->u.btree.nEq = 1;
- pNew->u.btree.nSkip = 0;
+ pNew->nSkip = 0;
pNew->u.btree.pIndex = 0;
pNew->nLTerm = 1;
pNew->aLTerm[0] = pTerm;
}
rSize = pProbe->aiRowLogEst[0];
pNew->u.btree.nEq = 0;
- pNew->u.btree.nSkip = 0;
+ pNew->nSkip = 0;
pNew->nLTerm = 0;
pNew->iSortIdx = 0;
pNew->rSetup = 0;
/* Skip over == and IS NULL terms */
if( j<pLoop->u.btree.nEq
- && pLoop->u.btree.nSkip==0
+ && pLoop->nSkip==0
&& ((i = pLoop->aLTerm[j]->eOperator) & (WO_EQ|WO_ISNULL))!=0
){
if( i & WO_ISNULL ){
/* Seed the search with a single WherePath containing zero WhereLoops.
**
- ** TUNING: Do not let the number of iterations go above 25. If the cost
- ** of computing an automatic index is not paid back within the first 25
+ ** TUNING: Do not let the number of iterations go above 28. If the cost
+ ** of computing an automatic index is not paid back within the first 28
** rows, then do not use the automatic index. */
- aFrom[0].nRow = MIN(pParse->nQueryLoop, 46); assert( 46==sqlite3LogEst(25) );
+ aFrom[0].nRow = MIN(pParse->nQueryLoop, 48); assert( 48==sqlite3LogEst(28) );
nFrom = 1;
assert( aFrom[0].isOrdered==0 );
if( nOrderBy ){
}
#ifdef WHERETRACE_ENABLED /* >=2 */
- if( sqlite3WhereTrace>=2 ){
+ if( sqlite3WhereTrace & 0x02 ){
sqlite3DebugPrintf("---- after round %d ----\n", iLoop);
for(ii=0, pTo=aTo; ii<nTo; ii++, pTo++){
sqlite3DebugPrintf(" %s cost=%-3d nrow=%-3d order=%c",
pWC = &pWInfo->sWC;
pLoop = pBuilder->pNew;
pLoop->wsFlags = 0;
- pLoop->u.btree.nSkip = 0;
+ pLoop->nSkip = 0;
pTerm = findTerm(pWC, iCur, -1, 0, WO_EQ, 0);
if( pTerm ){
pLoop->wsFlags = WHERE_COLUMN_EQ|WHERE_IPK|WHERE_ONEROW;
}else{
for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
assert( pLoop->aLTermSpace==pLoop->aLTerm );
- assert( ArraySize(pLoop->aLTermSpace)==4 );
if( !IsUniqueIndex(pIdx)
|| pIdx->pPartIdxWhere!=0
|| pIdx->nKeyCol>ArraySize(pLoop->aLTermSpace)
if( op ){
sqlite3VdbeAddOp3(v, op, iIndexCur, pIx->tnum, iDb);
sqlite3VdbeSetP4KeyInfo(pParse, pIx);
+ if( (pLoop->wsFlags & WHERE_CONSTRAINT)!=0
+ && (pLoop->wsFlags & (WHERE_COLUMN_RANGE|WHERE_SKIPSCAN))==0
+ && (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)==0
+ ){
+ sqlite3VdbeChangeP5(v, OPFLAG_SEEKEQ); /* Hint to COMDB2 */
+ }
VdbeComment((v, "%s", pIx->zName));
}
}
*/
notReady = ~(Bitmask)0;
for(ii=0; ii<nTabList; ii++){
+ int addrExplain;
+ int wsFlags;
pLevel = &pWInfo->a[ii];
+ wsFlags = pLevel->pWLoop->wsFlags;
#ifndef SQLITE_OMIT_AUTOMATIC_INDEX
if( (pLevel->pWLoop->wsFlags & WHERE_AUTO_INDEX)!=0 ){
constructAutomaticIndex(pParse, &pWInfo->sWC,
if( db->mallocFailed ) goto whereBeginError;
}
#endif
- explainOneScan(pParse, pTabList, pLevel, ii, pLevel->iFrom, wctrlFlags);
+ addrExplain = explainOneScan(
+ pParse, pTabList, pLevel, ii, pLevel->iFrom, wctrlFlags
+ );
pLevel->addrBody = sqlite3VdbeCurrentAddr(v);
notReady = codeOneLoopStart(pWInfo, ii, notReady);
pWInfo->iContinue = pLevel->addrCont;
+ if( (wsFlags&WHERE_MULTI_OR)==0 && (wctrlFlags&WHERE_ONETABLE_ONLY)==0 ){
+ addScanStatus(v, pTabList, pLevel, addrExplain);
+ }
}
/* Done. */
sqlite3VdbeJumpHere(v, pLevel->addrSkip);
sqlite3VdbeJumpHere(v, pLevel->addrSkip-2);
}
+ if( pLevel->addrLikeRep ){
+ int op;
+ if( sqlite3VdbeGetOp(v, pLevel->addrLikeRep-1)->p1 ){
+ op = OP_DecrJumpZero;
+ }else{
+ op = OP_JumpZeroIncr;
+ }
+ sqlite3VdbeAddOp2(v, op, pLevel->iLikeRepCntr, pLevel->addrLikeRep);
+ VdbeCoverage(v);
+ }
if( pLevel->iLeftJoin ){
addr = sqlite3VdbeAddOp1(v, OP_IfPos, pLevel->iLeftJoin); VdbeCoverage(v);
assert( (pLoop->wsFlags & WHERE_IDX_ONLY)==0
int cnt = 0, mxSelect;
p->pWith = yymsp[-1].minor.yy59;
if( p->pPrior ){
+ u16 allValues = SF_Values;
pNext = 0;
for(pLoop=p; pLoop; pNext=pLoop, pLoop=pLoop->pPrior, cnt++){
pLoop->pNext = pNext;
pLoop->selFlags |= SF_Compound;
+ allValues &= pLoop->selFlags;
}
- mxSelect = pParse->db->aLimit[SQLITE_LIMIT_COMPOUND_SELECT];
- if( mxSelect && cnt>mxSelect ){
+ if( allValues ){
+ p->selFlags |= SF_AllValues;
+ }else if(
+ (mxSelect = pParse->db->aLimit[SQLITE_LIMIT_COMPOUND_SELECT])>0
+ && cnt>mxSelect
+ ){
sqlite3ErrorMsg(pParse, "too many terms in compound SELECT");
}
}
break;
case 193: /* expr ::= expr COLLATE ID|STRING */
{
- yygotominor.yy346.pExpr = sqlite3ExprAddCollateToken(pParse, yymsp[-2].minor.yy346.pExpr, &yymsp[0].minor.yy0);
+ yygotominor.yy346.pExpr = sqlite3ExprAddCollateToken(pParse, yymsp[-2].minor.yy346.pExpr, &yymsp[0].minor.yy0, 1);
yygotominor.yy346.zStart = yymsp[-2].minor.yy346.zStart;
yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n];
}
yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy346.pExpr, 0, 0);
if( yygotominor.yy346.pExpr ){
yygotominor.yy346.pExpr->x.pList = yymsp[-1].minor.yy14;
- sqlite3ExprSetHeight(pParse, yygotominor.yy346.pExpr);
+ sqlite3ExprSetHeightAndFlags(pParse, yygotominor.yy346.pExpr);
}else{
sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy14);
}
yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_SELECT, 0, 0, 0);
if( yygotominor.yy346.pExpr ){
yygotominor.yy346.pExpr->x.pSelect = yymsp[-1].minor.yy3;
- ExprSetProperty(yygotominor.yy346.pExpr, EP_xIsSelect);
- sqlite3ExprSetHeight(pParse, yygotominor.yy346.pExpr);
+ ExprSetProperty(yygotominor.yy346.pExpr, EP_xIsSelect|EP_Subquery);
+ sqlite3ExprSetHeightAndFlags(pParse, yygotominor.yy346.pExpr);
}else{
sqlite3SelectDelete(pParse->db, yymsp[-1].minor.yy3);
}
yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy346.pExpr, 0, 0);
if( yygotominor.yy346.pExpr ){
yygotominor.yy346.pExpr->x.pSelect = yymsp[-1].minor.yy3;
- ExprSetProperty(yygotominor.yy346.pExpr, EP_xIsSelect);
- sqlite3ExprSetHeight(pParse, yygotominor.yy346.pExpr);
+ ExprSetProperty(yygotominor.yy346.pExpr, EP_xIsSelect|EP_Subquery);
+ sqlite3ExprSetHeightAndFlags(pParse, yygotominor.yy346.pExpr);
}else{
sqlite3SelectDelete(pParse->db, yymsp[-1].minor.yy3);
}
yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-3].minor.yy346.pExpr, 0, 0);
if( yygotominor.yy346.pExpr ){
yygotominor.yy346.pExpr->x.pSelect = sqlite3SelectNew(pParse, 0,pSrc,0,0,0,0,0,0,0);
- ExprSetProperty(yygotominor.yy346.pExpr, EP_xIsSelect);
- sqlite3ExprSetHeight(pParse, yygotominor.yy346.pExpr);
+ ExprSetProperty(yygotominor.yy346.pExpr, EP_xIsSelect|EP_Subquery);
+ sqlite3ExprSetHeightAndFlags(pParse, yygotominor.yy346.pExpr);
}else{
sqlite3SrcListDelete(pParse->db, pSrc);
}
Expr *p = yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_EXISTS, 0, 0, 0);
if( p ){
p->x.pSelect = yymsp[-1].minor.yy3;
- ExprSetProperty(p, EP_xIsSelect);
- sqlite3ExprSetHeight(pParse, p);
+ ExprSetProperty(p, EP_xIsSelect|EP_Subquery);
+ sqlite3ExprSetHeightAndFlags(pParse, p);
}else{
sqlite3SelectDelete(pParse->db, yymsp[-1].minor.yy3);
}
yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_CASE, yymsp[-3].minor.yy132, 0, 0);
if( yygotominor.yy346.pExpr ){
yygotominor.yy346.pExpr->x.pList = yymsp[-1].minor.yy132 ? sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy14,yymsp[-1].minor.yy132) : yymsp[-2].minor.yy14;
- sqlite3ExprSetHeight(pParse, yygotominor.yy346.pExpr);
+ sqlite3ExprSetHeightAndFlags(pParse, yygotominor.yy346.pExpr);
}else{
sqlite3ExprListDelete(pParse->db, yymsp[-2].minor.yy14);
sqlite3ExprDelete(pParse->db, yymsp[-1].minor.yy132);
break;
case 244: /* idxlist ::= idxlist COMMA nm collate sortorder */
{
- Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &yymsp[-1].minor.yy0);
+ Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &yymsp[-1].minor.yy0, 1);
yygotominor.yy14 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy14, p);
sqlite3ExprListSetName(pParse,yygotominor.yy14,&yymsp[-2].minor.yy0,1);
sqlite3ExprListCheckLength(pParse, yygotominor.yy14, "index");
break;
case 245: /* idxlist ::= nm collate sortorder */
{
- Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &yymsp[-1].minor.yy0);
+ Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &yymsp[-1].minor.yy0, 1);
yygotominor.yy14 = sqlite3ExprListAppend(pParse,0, p);
sqlite3ExprListSetName(pParse, yygotominor.yy14, &yymsp[-2].minor.yy0, 1);
sqlite3ExprListCheckLength(pParse, yygotominor.yy14, "index");
sqlite3 *db = pParse->db; /* The database connection */
int mxSqlLen; /* Max length of an SQL string */
-
+ assert( zSql!=0 );
mxSqlLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH];
if( db->nVdbeActive==0 ){
db->u1.isInterrupted = 0;
sqlite3Parser(pEngine, 0, pParse->sLastToken, pParse);
}
#ifdef YYTRACKMAXSTACKDEPTH
+ sqlite3_mutex_enter(sqlite3MallocMutex());
sqlite3StatusSet(SQLITE_STATUS_PARSER_STACK,
sqlite3ParserStackPeak(pEngine)
);
+ sqlite3_mutex_leave(sqlite3MallocMutex());
#endif /* YYDEBUG */
sqlite3ParserFree(pEngine, sqlite3_free);
db->lookaside.bEnabled = enableLookaside;
** to recognize the end of a trigger can be omitted. All we have to do
** is look for a semicolon that is not part of an string or comment.
*/
-SQLITE_API int sqlite3_complete(const char *zSql){
+SQLITE_API int SQLITE_STDCALL sqlite3_complete(const char *zSql){
u8 state = 0; /* Current state, using numbers defined in header comment */
u8 token; /* Value of the next token */
};
#endif /* SQLITE_OMIT_TRIGGER */
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( zSql==0 ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
+
while( *zSql ){
switch( *zSql ){
case ';': { /* A semicolon */
** above, except that the parameter is required to be UTF-16 encoded, not
** UTF-8.
*/
-SQLITE_API int sqlite3_complete16(const void *zSql){
+SQLITE_API int SQLITE_STDCALL sqlite3_complete16(const void *zSql){
sqlite3_value *pVal;
char const *zSql8;
int rc = SQLITE_NOMEM;
/* IMPLEMENTATION-OF: R-53536-42575 The sqlite3_libversion() function returns
** a pointer to the to the sqlite3_version[] string constant.
*/
-SQLITE_API const char *sqlite3_libversion(void){ return sqlite3_version; }
+SQLITE_API const char *SQLITE_STDCALL sqlite3_libversion(void){ return sqlite3_version; }
/* IMPLEMENTATION-OF: R-63124-39300 The sqlite3_sourceid() function returns a
** pointer to a string constant whose value is the same as the
** SQLITE_SOURCE_ID C preprocessor macro.
*/
-SQLITE_API const char *sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; }
+SQLITE_API const char *SQLITE_STDCALL sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; }
/* IMPLEMENTATION-OF: R-35210-63508 The sqlite3_libversion_number() function
** returns an integer equal to SQLITE_VERSION_NUMBER.
*/
-SQLITE_API int sqlite3_libversion_number(void){ return SQLITE_VERSION_NUMBER; }
+SQLITE_API int SQLITE_STDCALL sqlite3_libversion_number(void){ return SQLITE_VERSION_NUMBER; }
/* IMPLEMENTATION-OF: R-20790-14025 The sqlite3_threadsafe() function returns
** zero if and only if SQLite was compiled with mutexing code omitted due to
** the SQLITE_THREADSAFE compile-time option being set to 0.
*/
-SQLITE_API int sqlite3_threadsafe(void){ return SQLITE_THREADSAFE; }
+SQLITE_API int SQLITE_STDCALL sqlite3_threadsafe(void){ return SQLITE_THREADSAFE; }
#if !defined(SQLITE_OMIT_TRACE) && defined(SQLITE_ENABLE_IOTRACE)
/*
** I/O active are written using this function. These messages
** are intended for debugging activity only.
*/
-SQLITE_PRIVATE void (*sqlite3IoTrace)(const char*, ...) = 0;
+SQLITE_API void (SQLITE_CDECL *sqlite3IoTrace)(const char*, ...) = 0;
#endif
/*
** * Recursive calls to this routine from thread X return immediately
** without blocking.
*/
-SQLITE_API int sqlite3_initialize(void){
+SQLITE_API int SQLITE_STDCALL sqlite3_initialize(void){
MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */
int rc; /* Result code */
#ifdef SQLITE_EXTRA_INIT
}
#endif
+ /* If the following assert() fails on some obscure processor/compiler
+ ** combination, the work-around is to set the correct pointer
+ ** size at compile-time using -DSQLITE_PTRSIZE=n compile-time option */
+ assert( SQLITE_PTRSIZE==sizeof(char*) );
+
/* If SQLite is already completely initialized, then this call
** to sqlite3_initialize() should be a no-op. But the initialization
** must be complete. So isInit must not be set until the very end
** on when SQLite is already shut down. If SQLite is already shut down
** when this routine is invoked, then this routine is a harmless no-op.
*/
-SQLITE_API int sqlite3_shutdown(void){
+SQLITE_API int SQLITE_STDCALL sqlite3_shutdown(void){
+#ifdef SQLITE_OMIT_WSD
+ int rc = sqlite3_wsd_init(4096, 24);
+ if( rc!=SQLITE_OK ){
+ return rc;
+ }
+#endif
+
if( sqlite3GlobalConfig.isInit ){
#ifdef SQLITE_EXTRA_SHUTDOWN
void SQLITE_EXTRA_SHUTDOWN(void);
** threadsafe. Failure to heed these warnings can lead to unpredictable
** behavior.
*/
-SQLITE_API int sqlite3_config(int op, ...){
+SQLITE_API int SQLITE_CDECL sqlite3_config(int op, ...){
va_list ap;
int rc = SQLITE_OK;
switch( op ){
/* Mutex configuration options are only available in a threadsafe
- ** compile.
+ ** compile.
*/
-#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0
+#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-54466-46756 */
case SQLITE_CONFIG_SINGLETHREAD: {
- /* Disable all mutexing */
- sqlite3GlobalConfig.bCoreMutex = 0;
- sqlite3GlobalConfig.bFullMutex = 0;
+ /* EVIDENCE-OF: R-02748-19096 This option sets the threading mode to
+ ** Single-thread. */
+ sqlite3GlobalConfig.bCoreMutex = 0; /* Disable mutex on core */
+ sqlite3GlobalConfig.bFullMutex = 0; /* Disable mutex on connections */
break;
}
+#endif
+#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-20520-54086 */
case SQLITE_CONFIG_MULTITHREAD: {
- /* Disable mutexing of database connections */
- /* Enable mutexing of core data structures */
- sqlite3GlobalConfig.bCoreMutex = 1;
- sqlite3GlobalConfig.bFullMutex = 0;
+ /* EVIDENCE-OF: R-14374-42468 This option sets the threading mode to
+ ** Multi-thread. */
+ sqlite3GlobalConfig.bCoreMutex = 1; /* Enable mutex on core */
+ sqlite3GlobalConfig.bFullMutex = 0; /* Disable mutex on connections */
break;
}
+#endif
+#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-59593-21810 */
case SQLITE_CONFIG_SERIALIZED: {
- /* Enable all mutexing */
- sqlite3GlobalConfig.bCoreMutex = 1;
- sqlite3GlobalConfig.bFullMutex = 1;
+ /* EVIDENCE-OF: R-41220-51800 This option sets the threading mode to
+ ** Serialized. */
+ sqlite3GlobalConfig.bCoreMutex = 1; /* Enable mutex on core */
+ sqlite3GlobalConfig.bFullMutex = 1; /* Enable mutex on connections */
break;
}
+#endif
+#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-63666-48755 */
case SQLITE_CONFIG_MUTEX: {
/* Specify an alternative mutex implementation */
sqlite3GlobalConfig.mutex = *va_arg(ap, sqlite3_mutex_methods*);
break;
}
+#endif
+#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-14450-37597 */
case SQLITE_CONFIG_GETMUTEX: {
/* Retrieve the current mutex implementation */
*va_arg(ap, sqlite3_mutex_methods*) = sqlite3GlobalConfig.mutex;
}
#endif
-
case SQLITE_CONFIG_MALLOC: {
- /* Specify an alternative malloc implementation */
+ /* EVIDENCE-OF: R-55594-21030 The SQLITE_CONFIG_MALLOC option takes a
+ ** single argument which is a pointer to an instance of the
+ ** sqlite3_mem_methods structure. The argument specifies alternative
+ ** low-level memory allocation routines to be used in place of the memory
+ ** allocation routines built into SQLite. */
sqlite3GlobalConfig.m = *va_arg(ap, sqlite3_mem_methods*);
break;
}
case SQLITE_CONFIG_GETMALLOC: {
- /* Retrieve the current malloc() implementation */
+ /* EVIDENCE-OF: R-51213-46414 The SQLITE_CONFIG_GETMALLOC option takes a
+ ** single argument which is a pointer to an instance of the
+ ** sqlite3_mem_methods structure. The sqlite3_mem_methods structure is
+ ** filled with the currently defined memory allocation routines. */
if( sqlite3GlobalConfig.m.xMalloc==0 ) sqlite3MemSetDefault();
*va_arg(ap, sqlite3_mem_methods*) = sqlite3GlobalConfig.m;
break;
}
case SQLITE_CONFIG_MEMSTATUS: {
- /* Enable or disable the malloc status collection */
+ /* EVIDENCE-OF: R-61275-35157 The SQLITE_CONFIG_MEMSTATUS option takes
+ ** single argument of type int, interpreted as a boolean, which enables
+ ** or disables the collection of memory allocation statistics. */
sqlite3GlobalConfig.bMemstat = va_arg(ap, int);
break;
}
case SQLITE_CONFIG_SCRATCH: {
- /* Designate a buffer for scratch memory space */
+ /* EVIDENCE-OF: R-08404-60887 There are three arguments to
+ ** SQLITE_CONFIG_SCRATCH: A pointer an 8-byte aligned memory buffer from
+ ** which the scratch allocations will be drawn, the size of each scratch
+ ** allocation (sz), and the maximum number of scratch allocations (N). */
sqlite3GlobalConfig.pScratch = va_arg(ap, void*);
sqlite3GlobalConfig.szScratch = va_arg(ap, int);
sqlite3GlobalConfig.nScratch = va_arg(ap, int);
break;
}
case SQLITE_CONFIG_PAGECACHE: {
- /* Designate a buffer for page cache memory space */
+ /* EVIDENCE-OF: R-31408-40510 There are three arguments to
+ ** SQLITE_CONFIG_PAGECACHE: A pointer to 8-byte aligned memory, the size
+ ** of each page buffer (sz), and the number of pages (N). */
sqlite3GlobalConfig.pPage = va_arg(ap, void*);
sqlite3GlobalConfig.szPage = va_arg(ap, int);
sqlite3GlobalConfig.nPage = va_arg(ap, int);
break;
}
+ case SQLITE_CONFIG_PCACHE_HDRSZ: {
+ /* EVIDENCE-OF: R-39100-27317 The SQLITE_CONFIG_PCACHE_HDRSZ option takes
+ ** a single parameter which is a pointer to an integer and writes into
+ ** that integer the number of extra bytes per page required for each page
+ ** in SQLITE_CONFIG_PAGECACHE. */
+ *va_arg(ap, int*) =
+ sqlite3HeaderSizeBtree() +
+ sqlite3HeaderSizePcache() +
+ sqlite3HeaderSizePcache1();
+ break;
+ }
case SQLITE_CONFIG_PCACHE: {
/* no-op */
}
case SQLITE_CONFIG_PCACHE2: {
- /* Specify an alternative page cache implementation */
+ /* EVIDENCE-OF: R-63325-48378 The SQLITE_CONFIG_PCACHE2 option takes a
+ ** single argument which is a pointer to an sqlite3_pcache_methods2
+ ** object. This object specifies the interface to a custom page cache
+ ** implementation. */
sqlite3GlobalConfig.pcache2 = *va_arg(ap, sqlite3_pcache_methods2*);
break;
}
case SQLITE_CONFIG_GETPCACHE2: {
+ /* EVIDENCE-OF: R-22035-46182 The SQLITE_CONFIG_GETPCACHE2 option takes a
+ ** single argument which is a pointer to an sqlite3_pcache_methods2
+ ** object. SQLite copies of the current page cache implementation into
+ ** that object. */
if( sqlite3GlobalConfig.pcache2.xInit==0 ){
sqlite3PCacheSetDefault();
}
break;
}
+/* EVIDENCE-OF: R-06626-12911 The SQLITE_CONFIG_HEAP option is only
+** available if SQLite is compiled with either SQLITE_ENABLE_MEMSYS3 or
+** SQLITE_ENABLE_MEMSYS5 and returns SQLITE_ERROR if invoked otherwise. */
#if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5)
case SQLITE_CONFIG_HEAP: {
- /* Designate a buffer for heap memory space */
+ /* EVIDENCE-OF: R-19854-42126 There are three arguments to
+ ** SQLITE_CONFIG_HEAP: An 8-byte aligned pointer to the memory, the
+ ** number of bytes in the memory buffer, and the minimum allocation size.
+ */
sqlite3GlobalConfig.pHeap = va_arg(ap, void*);
sqlite3GlobalConfig.nHeap = va_arg(ap, int);
sqlite3GlobalConfig.mnReq = va_arg(ap, int);
}
if( sqlite3GlobalConfig.pHeap==0 ){
- /* If the heap pointer is NULL, then restore the malloc implementation
- ** back to NULL pointers too. This will cause the malloc to go
- ** back to its default implementation when sqlite3_initialize() is
- ** run.
+ /* EVIDENCE-OF: R-49920-60189 If the first pointer (the memory pointer)
+ ** is NULL, then SQLite reverts to using its default memory allocator
+ ** (the system malloc() implementation), undoing any prior invocation of
+ ** SQLITE_CONFIG_MALLOC.
+ **
+ ** Setting sqlite3GlobalConfig.m to all zeros will cause malloc to
+ ** revert to its default implementation when sqlite3_initialize() is run
*/
memset(&sqlite3GlobalConfig.m, 0, sizeof(sqlite3GlobalConfig.m));
}else{
- /* The heap pointer is not NULL, then install one of the
- ** mem5.c/mem3.c methods. The enclosing #if guarantees at
- ** least one of these methods is currently enabled.
- */
+ /* EVIDENCE-OF: R-61006-08918 If the memory pointer is not NULL then the
+ ** alternative memory allocator is engaged to handle all of SQLites
+ ** memory allocation needs. */
#ifdef SQLITE_ENABLE_MEMSYS3
sqlite3GlobalConfig.m = *sqlite3MemGetMemsys3();
#endif
** sqlite3_config(SQLITE_CONFIG_URI,0) configuration calls.
*/
case SQLITE_CONFIG_URI: {
+ /* EVIDENCE-OF: R-25451-61125 The SQLITE_CONFIG_URI option takes a single
+ ** argument of type int. If non-zero, then URI handling is globally
+ ** enabled. If the parameter is zero, then URI handling is globally
+ ** disabled. */
sqlite3GlobalConfig.bOpenUri = va_arg(ap, int);
break;
}
case SQLITE_CONFIG_COVERING_INDEX_SCAN: {
+ /* EVIDENCE-OF: R-36592-02772 The SQLITE_CONFIG_COVERING_INDEX_SCAN
+ ** option takes a single integer argument which is interpreted as a
+ ** boolean in order to enable or disable the use of covering indices for
+ ** full table scans in the query optimizer. */
sqlite3GlobalConfig.bUseCis = va_arg(ap, int);
break;
}
#endif
case SQLITE_CONFIG_MMAP_SIZE: {
+ /* EVIDENCE-OF: R-58063-38258 SQLITE_CONFIG_MMAP_SIZE takes two 64-bit
+ ** integer (sqlite3_int64) values that are the default mmap size limit
+ ** (the default setting for PRAGMA mmap_size) and the maximum allowed
+ ** mmap size limit. */
sqlite3_int64 szMmap = va_arg(ap, sqlite3_int64);
sqlite3_int64 mxMmap = va_arg(ap, sqlite3_int64);
+ /* EVIDENCE-OF: R-53367-43190 If either argument to this option is
+ ** negative, then that argument is changed to its compile-time default.
+ **
+ ** EVIDENCE-OF: R-34993-45031 The maximum allowed mmap size will be
+ ** silently truncated if necessary so that it does not exceed the
+ ** compile-time maximum mmap size set by the SQLITE_MAX_MMAP_SIZE
+ ** compile-time option.
+ */
if( mxMmap<0 || mxMmap>SQLITE_MAX_MMAP_SIZE ){
mxMmap = SQLITE_MAX_MMAP_SIZE;
}
- sqlite3GlobalConfig.mxMmap = mxMmap;
if( szMmap<0 ) szMmap = SQLITE_DEFAULT_MMAP_SIZE;
if( szMmap>mxMmap) szMmap = mxMmap;
+ sqlite3GlobalConfig.mxMmap = mxMmap;
sqlite3GlobalConfig.szMmap = szMmap;
break;
}
-#if SQLITE_OS_WIN && defined(SQLITE_WIN32_MALLOC)
+#if SQLITE_OS_WIN && defined(SQLITE_WIN32_MALLOC) /* IMP: R-04780-55815 */
case SQLITE_CONFIG_WIN32_HEAPSIZE: {
+ /* EVIDENCE-OF: R-34926-03360 SQLITE_CONFIG_WIN32_HEAPSIZE takes a 32-bit
+ ** unsigned integer value that specifies the maximum size of the created
+ ** heap. */
sqlite3GlobalConfig.nHeap = va_arg(ap, int);
break;
}
#endif
+ case SQLITE_CONFIG_PMASZ: {
+ sqlite3GlobalConfig.szPma = va_arg(ap, unsigned int);
+ break;
+ }
+
default: {
rc = SQLITE_ERROR;
break;
/*
** Return the mutex associated with a database connection.
*/
-SQLITE_API sqlite3_mutex *sqlite3_db_mutex(sqlite3 *db){
+SQLITE_API sqlite3_mutex *SQLITE_STDCALL sqlite3_db_mutex(sqlite3 *db){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
return db->mutex;
}
** Free up as much memory as we can from the given database
** connection.
*/
-SQLITE_API int sqlite3_db_release_memory(sqlite3 *db){
+SQLITE_API int SQLITE_STDCALL sqlite3_db_release_memory(sqlite3 *db){
int i;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(db->mutex);
sqlite3BtreeEnterAll(db);
for(i=0; i<db->nDb; i++){
/*
** Configuration settings for an individual database connection
*/
-SQLITE_API int sqlite3_db_config(sqlite3 *db, int op, ...){
+SQLITE_API int SQLITE_CDECL sqlite3_db_config(sqlite3 *db, int op, ...){
va_list ap;
int rc;
va_start(ap, op);
){
int rc, n;
n = nKey1<nKey2 ? nKey1 : nKey2;
+ /* EVIDENCE-OF: R-65033-28449 The built-in BINARY collation compares
+ ** strings byte by byte using the memcmp() function from the standard C
+ ** library. */
rc = memcmp(pKey1, pKey2, n);
if( rc==0 ){
if( padFlag
&& allSpaces(((char*)pKey1)+n, nKey1-n)
&& allSpaces(((char*)pKey2)+n, nKey2-n)
){
- /* Leave rc unchanged at 0 */
+ /* EVIDENCE-OF: R-31624-24737 RTRIM is like BINARY except that extra
+ ** spaces at the end of either string do not change the result. In other
+ ** words, strings will compare equal to one another as long as they
+ ** differ only in the number of spaces at the end.
+ */
}else{
rc = nKey1 - nKey2;
}
/*
** Return the ROWID of the most recent insert
*/
-SQLITE_API sqlite_int64 sqlite3_last_insert_rowid(sqlite3 *db){
+SQLITE_API sqlite_int64 SQLITE_STDCALL sqlite3_last_insert_rowid(sqlite3 *db){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
return db->lastRowid;
}
/*
** Return the number of changes in the most recent call to sqlite3_exec().
*/
-SQLITE_API int sqlite3_changes(sqlite3 *db){
+SQLITE_API int SQLITE_STDCALL sqlite3_changes(sqlite3 *db){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
return db->nChange;
}
/*
** Return the number of changes since the database handle was opened.
*/
-SQLITE_API int sqlite3_total_changes(sqlite3 *db){
+SQLITE_API int SQLITE_STDCALL sqlite3_total_changes(sqlite3 *db){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
return db->nTotalChange;
}
** unclosed resources, and arranges for deallocation when the last
** prepare statement or sqlite3_backup closes.
*/
-SQLITE_API int sqlite3_close(sqlite3 *db){ return sqlite3Close(db,0); }
-SQLITE_API int sqlite3_close_v2(sqlite3 *db){ return sqlite3Close(db,1); }
+SQLITE_API int SQLITE_STDCALL sqlite3_close(sqlite3 *db){ return sqlite3Close(db,0); }
+SQLITE_API int SQLITE_STDCALL sqlite3_close_v2(sqlite3 *db){ return sqlite3Close(db,1); }
/*
/*
** Rollback all database files. If tripCode is not SQLITE_OK, then
-** any open cursors are invalidated ("tripped" - as in "tripping a circuit
+** any write cursors are invalidated ("tripped" - as in "tripping a circuit
** breaker") and made to return tripCode if there are any further
-** attempts to use that cursor.
+** attempts to use that cursor. Read cursors remain open and valid
+** but are "saved" in case the table pages are moved around.
*/
SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3 *db, int tripCode){
int i;
int inTrans = 0;
+ int schemaChange;
assert( sqlite3_mutex_held(db->mutex) );
sqlite3BeginBenignMalloc();
** the database rollback and schema reset, which can cause false
** corruption reports in some cases. */
sqlite3BtreeEnterAll(db);
+ schemaChange = (db->flags & SQLITE_InternChanges)!=0 && db->init.busy==0;
for(i=0; i<db->nDb; i++){
Btree *p = db->aDb[i].pBt;
if( sqlite3BtreeIsInTrans(p) ){
inTrans = 1;
}
- sqlite3BtreeRollback(p, tripCode);
+ sqlite3BtreeRollback(p, tripCode, !schemaChange);
}
}
sqlite3VtabRollback(db);
void *ptr, /* Database connection */
int count /* Number of times table has been busy */
){
-#if SQLITE_OS_WIN || (defined(HAVE_USLEEP) && HAVE_USLEEP)
+#if SQLITE_OS_WIN || HAVE_USLEEP
static const u8 delays[] =
{ 1, 2, 5, 10, 15, 20, 25, 25, 25, 50, 50, 100 };
static const u8 totals[] =
** This routine sets the busy callback for an Sqlite database to the
** given callback function with the given argument.
*/
-SQLITE_API int sqlite3_busy_handler(
+SQLITE_API int SQLITE_STDCALL sqlite3_busy_handler(
sqlite3 *db,
int (*xBusy)(void*,int),
void *pArg
){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(db->mutex);
db->busyHandler.xFunc = xBusy;
db->busyHandler.pArg = pArg;
** given callback function with the given argument. The progress callback will
** be invoked every nOps opcodes.
*/
-SQLITE_API void sqlite3_progress_handler(
+SQLITE_API void SQLITE_STDCALL sqlite3_progress_handler(
sqlite3 *db,
int nOps,
int (*xProgress)(void*),
void *pArg
){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return;
+ }
+#endif
sqlite3_mutex_enter(db->mutex);
if( nOps>0 ){
db->xProgress = xProgress;
** This routine installs a default busy handler that waits for the
** specified number of milliseconds before returning 0.
*/
-SQLITE_API int sqlite3_busy_timeout(sqlite3 *db, int ms){
+SQLITE_API int SQLITE_STDCALL sqlite3_busy_timeout(sqlite3 *db, int ms){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
if( ms>0 ){
sqlite3_busy_handler(db, sqliteDefaultBusyCallback, (void*)db);
db->busyTimeout = ms;
/*
** Cause any pending operation to stop at its earliest opportunity.
*/
-SQLITE_API void sqlite3_interrupt(sqlite3 *db){
+SQLITE_API void SQLITE_STDCALL sqlite3_interrupt(sqlite3 *db){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return;
+ }
+#endif
db->u1.isInterrupted = 1;
}
/*
** Create new user functions.
*/
-SQLITE_API int sqlite3_create_function(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_function(
sqlite3 *db,
const char *zFunc,
int nArg,
xFinal, 0);
}
-SQLITE_API int sqlite3_create_function_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_function_v2(
sqlite3 *db,
const char *zFunc,
int nArg,
){
int rc = SQLITE_ERROR;
FuncDestructor *pArg = 0;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ return SQLITE_MISUSE_BKPT;
+ }
+#endif
sqlite3_mutex_enter(db->mutex);
if( xDestroy ){
pArg = (FuncDestructor *)sqlite3DbMallocZero(db, sizeof(FuncDestructor));
}
#ifndef SQLITE_OMIT_UTF16
-SQLITE_API int sqlite3_create_function16(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_function16(
sqlite3 *db,
const void *zFunctionName,
int nArg,
){
int rc;
char *zFunc8;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) || zFunctionName==0 ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(db->mutex);
assert( !db->mallocFailed );
zFunc8 = sqlite3Utf16to8(db, zFunctionName, -1, SQLITE_UTF16NATIVE);
** A global function must exist in order for name resolution to work
** properly.
*/
-SQLITE_API int sqlite3_overload_function(
+SQLITE_API int SQLITE_STDCALL sqlite3_overload_function(
sqlite3 *db,
const char *zName,
int nArg
){
int nName = sqlite3Strlen30(zName);
int rc = SQLITE_OK;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) || zName==0 || nArg<-2 ){
+ return SQLITE_MISUSE_BKPT;
+ }
+#endif
sqlite3_mutex_enter(db->mutex);
if( sqlite3FindFunction(db, zName, nName, nArg, SQLITE_UTF8, 0)==0 ){
rc = sqlite3CreateFunc(db, zName, nArg, SQLITE_UTF8,
** trace is a pointer to a function that is invoked at the start of each
** SQL statement.
*/
-SQLITE_API void *sqlite3_trace(sqlite3 *db, void (*xTrace)(void*,const char*), void *pArg){
+SQLITE_API void *SQLITE_STDCALL sqlite3_trace(sqlite3 *db, void (*xTrace)(void*,const char*), void *pArg){
void *pOld;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
sqlite3_mutex_enter(db->mutex);
pOld = db->pTraceArg;
db->xTrace = xTrace;
** profile is a pointer to a function that is invoked at the conclusion of
** each SQL statement that is run.
*/
-SQLITE_API void *sqlite3_profile(
+SQLITE_API void *SQLITE_STDCALL sqlite3_profile(
sqlite3 *db,
void (*xProfile)(void*,const char*,sqlite_uint64),
void *pArg
){
void *pOld;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
sqlite3_mutex_enter(db->mutex);
pOld = db->pProfileArg;
db->xProfile = xProfile;
** If the invoked function returns non-zero, then the commit becomes a
** rollback.
*/
-SQLITE_API void *sqlite3_commit_hook(
+SQLITE_API void *SQLITE_STDCALL sqlite3_commit_hook(
sqlite3 *db, /* Attach the hook to this database */
int (*xCallback)(void*), /* Function to invoke on each commit */
void *pArg /* Argument to the function */
){
void *pOld;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
sqlite3_mutex_enter(db->mutex);
pOld = db->pCommitArg;
db->xCommitCallback = xCallback;
** Register a callback to be invoked each time a row is updated,
** inserted or deleted using this database connection.
*/
-SQLITE_API void *sqlite3_update_hook(
+SQLITE_API void *SQLITE_STDCALL sqlite3_update_hook(
sqlite3 *db, /* Attach the hook to this database */
void (*xCallback)(void*,int,char const *,char const *,sqlite_int64),
void *pArg /* Argument to the function */
){
void *pRet;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
sqlite3_mutex_enter(db->mutex);
pRet = db->pUpdateArg;
db->xUpdateCallback = xCallback;
** Register a callback to be invoked each time a transaction is rolled
** back by this database connection.
*/
-SQLITE_API void *sqlite3_rollback_hook(
+SQLITE_API void *SQLITE_STDCALL sqlite3_rollback_hook(
sqlite3 *db, /* Attach the hook to this database */
void (*xCallback)(void*), /* Callback function */
void *pArg /* Argument to the function */
){
void *pRet;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
sqlite3_mutex_enter(db->mutex);
pRet = db->pRollbackArg;
db->xRollbackCallback = xCallback;
** using sqlite3_wal_hook() disables the automatic checkpoint mechanism
** configured by this function.
*/
-SQLITE_API int sqlite3_wal_autocheckpoint(sqlite3 *db, int nFrame){
+SQLITE_API int SQLITE_STDCALL sqlite3_wal_autocheckpoint(sqlite3 *db, int nFrame){
#ifdef SQLITE_OMIT_WAL
UNUSED_PARAMETER(db);
UNUSED_PARAMETER(nFrame);
#else
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
if( nFrame>0 ){
sqlite3_wal_hook(db, sqlite3WalDefaultHook, SQLITE_INT_TO_PTR(nFrame));
}else{
** Register a callback to be invoked each time a transaction is written
** into the write-ahead-log by this database connection.
*/
-SQLITE_API void *sqlite3_wal_hook(
+SQLITE_API void *SQLITE_STDCALL sqlite3_wal_hook(
sqlite3 *db, /* Attach the hook to this db handle */
int(*xCallback)(void *, sqlite3*, const char*, int),
void *pArg /* First argument passed to xCallback() */
){
#ifndef SQLITE_OMIT_WAL
void *pRet;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
sqlite3_mutex_enter(db->mutex);
pRet = db->pWalArg;
db->xWalCallback = xCallback;
/*
** Checkpoint database zDb.
*/
-SQLITE_API int sqlite3_wal_checkpoint_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_wal_checkpoint_v2(
sqlite3 *db, /* Database handle */
const char *zDb, /* Name of attached database (or NULL) */
int eMode, /* SQLITE_CHECKPOINT_* value */
int rc; /* Return code */
int iDb = SQLITE_MAX_ATTACHED; /* sqlite3.aDb[] index of db to checkpoint */
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
+
/* Initialize the output variables to -1 in case an error occurs. */
if( pnLog ) *pnLog = -1;
if( pnCkpt ) *pnCkpt = -1;
- assert( SQLITE_CHECKPOINT_FULL>SQLITE_CHECKPOINT_PASSIVE );
- assert( SQLITE_CHECKPOINT_FULL<SQLITE_CHECKPOINT_RESTART );
- assert( SQLITE_CHECKPOINT_PASSIVE+2==SQLITE_CHECKPOINT_RESTART );
- if( eMode<SQLITE_CHECKPOINT_PASSIVE || eMode>SQLITE_CHECKPOINT_RESTART ){
+ assert( SQLITE_CHECKPOINT_PASSIVE==0 );
+ assert( SQLITE_CHECKPOINT_FULL==1 );
+ assert( SQLITE_CHECKPOINT_RESTART==2 );
+ assert( SQLITE_CHECKPOINT_TRUNCATE==3 );
+ if( eMode<SQLITE_CHECKPOINT_PASSIVE || eMode>SQLITE_CHECKPOINT_TRUNCATE ){
+ /* EVIDENCE-OF: R-03996-12088 The M parameter must be a valid checkpoint
+ ** mode: */
return SQLITE_MISUSE;
}
rc = SQLITE_ERROR;
sqlite3ErrorWithMsg(db, SQLITE_ERROR, "unknown database: %s", zDb);
}else{
+ db->busyHandler.nBusy = 0;
rc = sqlite3Checkpoint(db, iDb, eMode, pnLog, pnCkpt);
sqlite3Error(db, rc);
}
** to contains a zero-length string, all attached databases are
** checkpointed.
*/
-SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb){
- return sqlite3_wal_checkpoint_v2(db, zDb, SQLITE_CHECKPOINT_PASSIVE, 0, 0);
+SQLITE_API int SQLITE_STDCALL sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb){
+ /* EVIDENCE-OF: R-41613-20553 The sqlite3_wal_checkpoint(D,X) is equivalent to
+ ** sqlite3_wal_checkpoint_v2(D,X,SQLITE_CHECKPOINT_PASSIVE,0,0). */
+ return sqlite3_wal_checkpoint_v2(db,zDb,SQLITE_CHECKPOINT_PASSIVE,0,0);
}
#ifndef SQLITE_OMIT_WAL
** Return UTF-8 encoded English language explanation of the most recent
** error.
*/
-SQLITE_API const char *sqlite3_errmsg(sqlite3 *db){
+SQLITE_API const char *SQLITE_STDCALL sqlite3_errmsg(sqlite3 *db){
const char *z;
if( !db ){
return sqlite3ErrStr(SQLITE_NOMEM);
** Return UTF-16 encoded English language explanation of the most recent
** error.
*/
-SQLITE_API const void *sqlite3_errmsg16(sqlite3 *db){
+SQLITE_API const void *SQLITE_STDCALL sqlite3_errmsg16(sqlite3 *db){
static const u16 outOfMem[] = {
'o', 'u', 't', ' ', 'o', 'f', ' ', 'm', 'e', 'm', 'o', 'r', 'y', 0
};
** Return the most recent error code generated by an SQLite routine. If NULL is
** passed to this function, we assume a malloc() failed during sqlite3_open().
*/
-SQLITE_API int sqlite3_errcode(sqlite3 *db){
+SQLITE_API int SQLITE_STDCALL sqlite3_errcode(sqlite3 *db){
if( db && !sqlite3SafetyCheckSickOrOk(db) ){
return SQLITE_MISUSE_BKPT;
}
}
return db->errCode & db->errMask;
}
-SQLITE_API int sqlite3_extended_errcode(sqlite3 *db){
+SQLITE_API int SQLITE_STDCALL sqlite3_extended_errcode(sqlite3 *db){
if( db && !sqlite3SafetyCheckSickOrOk(db) ){
return SQLITE_MISUSE_BKPT;
}
** argument. For now, this simply calls the internal sqlite3ErrStr()
** function.
*/
-SQLITE_API const char *sqlite3_errstr(int rc){
+SQLITE_API const char *SQLITE_STDCALL sqlite3_errstr(int rc){
return sqlite3ErrStr(rc);
}
-/*
-** Invalidate all cached KeyInfo objects for database connection "db"
-*/
-static void invalidateCachedKeyInfo(sqlite3 *db){
- Db *pDb; /* A single database */
- int iDb; /* The database index number */
- HashElem *k; /* For looping over tables in pDb */
- Table *pTab; /* A table in the database */
- Index *pIdx; /* Each index */
-
- for(iDb=0, pDb=db->aDb; iDb<db->nDb; iDb++, pDb++){
- if( pDb->pBt==0 ) continue;
- sqlite3BtreeEnter(pDb->pBt);
- for(k=sqliteHashFirst(&pDb->pSchema->tblHash); k; k=sqliteHashNext(k)){
- pTab = (Table*)sqliteHashData(k);
- for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
- if( pIdx->pKeyInfo && pIdx->pKeyInfo->db==db ){
- sqlite3KeyInfoUnref(pIdx->pKeyInfo);
- pIdx->pKeyInfo = 0;
- }
- }
- }
- sqlite3BtreeLeave(pDb->pBt);
- }
-}
-
/*
** Create a new collating function for database "db". The name is zName
** and the encoding is enc.
return SQLITE_BUSY;
}
sqlite3ExpirePreparedStatements(db);
- invalidateCachedKeyInfo(db);
/* If collation sequence pColl was created directly by a call to
** sqlite3_create_collation, and not generated by synthCollSeq(),
** It merely prevents new constructs that exceed the limit
** from forming.
*/
-SQLITE_API int sqlite3_limit(sqlite3 *db, int limitId, int newLimit){
+SQLITE_API int SQLITE_STDCALL sqlite3_limit(sqlite3 *db, int limitId, int newLimit){
int oldLimit;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return -1;
+ }
+#endif
/* EVIDENCE-OF: R-30189-54097 For each limit category SQLITE_LIMIT_NAME
** there is a hard upper bound set at compile-time by a C preprocessor
assert( *pzErrMsg==0 );
- if( ((flags & SQLITE_OPEN_URI) || sqlite3GlobalConfig.bOpenUri)
+ if( ((flags & SQLITE_OPEN_URI) /* IMP: R-48725-32206 */
+ || sqlite3GlobalConfig.bOpenUri) /* IMP: R-51689-46548 */
&& nUri>=5 && memcmp(zUri, "file:", 5)==0 /* IMP: R-57884-37496 */
){
char *zOpt;
if( !zFile ) return SQLITE_NOMEM;
iIn = 5;
-#ifndef SQLITE_ALLOW_URI_AUTHORITY
+#ifdef SQLITE_ALLOW_URI_AUTHORITY
+ if( strncmp(zUri+5, "///", 3)==0 ){
+ iIn = 7;
+ /* The following condition causes URIs with five leading / characters
+ ** like file://///host/path to be converted into UNCs like //host/path.
+ ** The correct URI for that UNC has only two or four leading / characters
+ ** file://host/path or file:////host/path. But 5 leading slashes is a
+ ** common error, we are told, so we handle it as a special case. */
+ if( strncmp(zUri+7, "///", 3)==0 ){ iIn++; }
+ }else if( strncmp(zUri+5, "//localhost/", 12)==0 ){
+ iIn = 16;
+ }
+#else
/* Discard the scheme and authority segments of the URI. */
if( zUri[5]=='/' && zUri[6]=='/' ){
iIn = 7;
char *zOpen = 0; /* Filename argument to pass to BtreeOpen() */
char *zErrMsg = 0; /* Error message from sqlite3ParseUri() */
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( ppDb==0 ) return SQLITE_MISUSE_BKPT;
+#endif
*ppDb = 0;
#ifndef SQLITE_OMIT_AUTOINIT
rc = sqlite3_initialize();
#if !defined(SQLITE_DEFAULT_AUTOMATIC_INDEX) || SQLITE_DEFAULT_AUTOMATIC_INDEX
| SQLITE_AutoIndex
#endif
+#if SQLITE_DEFAULT_CKPTFULLFSYNC
+ | SQLITE_CkptFullFSync
+#endif
#if SQLITE_DEFAULT_FILE_FORMAT<4
| SQLITE_LegacyFileFmt
#endif
#endif
#if defined(SQLITE_DEFAULT_FOREIGN_KEYS) && SQLITE_DEFAULT_FOREIGN_KEYS
| SQLITE_ForeignKeys
+#endif
+#if defined(SQLITE_REVERSE_UNORDERED_SELECTS)
+ | SQLITE_ReverseOrder
#endif
;
sqlite3HashInit(&db->aCollSeq);
/* Add the default collation sequence BINARY. BINARY works for both UTF-8
** and UTF-16, so add a version for each to avoid any unnecessary
** conversions. The only error that can occur here is a malloc() failure.
+ **
+ ** EVIDENCE-OF: R-52786-44878 SQLite defines three built-in collating
+ ** functions:
*/
createCollation(db, "BINARY", SQLITE_UTF8, 0, binCollFunc, 0);
createCollation(db, "BINARY", SQLITE_UTF16BE, 0, binCollFunc, 0);
createCollation(db, "BINARY", SQLITE_UTF16LE, 0, binCollFunc, 0);
+ createCollation(db, "NOCASE", SQLITE_UTF8, 0, nocaseCollatingFunc, 0);
createCollation(db, "RTRIM", SQLITE_UTF8, (void*)1, binCollFunc, 0);
if( db->mallocFailed ){
goto opendb_out;
}
+ /* EVIDENCE-OF: R-08308-17224 The default collating function for all
+ ** strings is BINARY.
+ */
db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, "BINARY", 0);
assert( db->pDfltColl!=0 );
- /* Also add a UTF-8 case-insensitive collation sequence. */
- createCollation(db, "NOCASE", SQLITE_UTF8, 0, nocaseCollatingFunc, 0);
-
/* Parse the filename/URI argument. */
db->openFlags = flags;
rc = sqlite3ParseUri(zVfs, zFilename, &flags, &db->pVfs, &zOpen, &zErrMsg);
sqlite3Error(db, rc);
goto opendb_out;
}
+ sqlite3BtreeEnter(db->aDb[0].pBt);
db->aDb[0].pSchema = sqlite3SchemaGet(db, db->aDb[0].pBt);
+ if( !db->mallocFailed ) ENC(db) = SCHEMA_ENC(db);
+ sqlite3BtreeLeave(db->aDb[0].pBt);
db->aDb[1].pSchema = sqlite3SchemaGet(db, 0);
/* The default safety_level for the main database is 'full'; for the temp
opendb_out:
sqlite3_free(zOpen);
if( db ){
- assert( db->mutex!=0 || isThreadsafe==0 || sqlite3GlobalConfig.bFullMutex==0 );
+ assert( db->mutex!=0 || isThreadsafe==0
+ || sqlite3GlobalConfig.bFullMutex==0 );
sqlite3_mutex_leave(db->mutex);
}
rc = sqlite3_errcode(db);
/*
** Open a new database handle.
*/
-SQLITE_API int sqlite3_open(
+SQLITE_API int SQLITE_STDCALL sqlite3_open(
const char *zFilename,
sqlite3 **ppDb
){
return openDatabase(zFilename, ppDb,
SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, 0);
}
-SQLITE_API int sqlite3_open_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_open_v2(
const char *filename, /* Database filename (UTF-8) */
sqlite3 **ppDb, /* OUT: SQLite db handle */
int flags, /* Flags */
/*
** Open a new database handle.
*/
-SQLITE_API int sqlite3_open16(
+SQLITE_API int SQLITE_STDCALL sqlite3_open16(
const void *zFilename,
sqlite3 **ppDb
){
sqlite3_value *pVal;
int rc;
- assert( zFilename );
- assert( ppDb );
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( ppDb==0 ) return SQLITE_MISUSE_BKPT;
+#endif
*ppDb = 0;
#ifndef SQLITE_OMIT_AUTOINIT
rc = sqlite3_initialize();
if( rc ) return rc;
#endif
+ if( zFilename==0 ) zFilename = "\000\000";
pVal = sqlite3ValueNew(0);
sqlite3ValueSetStr(pVal, -1, zFilename, SQLITE_UTF16NATIVE, SQLITE_STATIC);
zFilename8 = sqlite3ValueText(pVal, SQLITE_UTF8);
SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, 0);
assert( *ppDb || rc==SQLITE_NOMEM );
if( rc==SQLITE_OK && !DbHasProperty(*ppDb, 0, DB_SchemaLoaded) ){
- ENC(*ppDb) = SQLITE_UTF16NATIVE;
+ SCHEMA_ENC(*ppDb) = ENC(*ppDb) = SQLITE_UTF16NATIVE;
}
}else{
rc = SQLITE_NOMEM;
/*
** Register a new collation sequence with the database handle db.
*/
-SQLITE_API int sqlite3_create_collation(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_collation(
sqlite3* db,
const char *zName,
int enc,
void* pCtx,
int(*xCompare)(void*,int,const void*,int,const void*)
){
- int rc;
- sqlite3_mutex_enter(db->mutex);
- assert( !db->mallocFailed );
- rc = createCollation(db, zName, (u8)enc, pCtx, xCompare, 0);
- rc = sqlite3ApiExit(db, rc);
- sqlite3_mutex_leave(db->mutex);
- return rc;
+ return sqlite3_create_collation_v2(db, zName, enc, pCtx, xCompare, 0);
}
/*
** Register a new collation sequence with the database handle db.
*/
-SQLITE_API int sqlite3_create_collation_v2(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_collation_v2(
sqlite3* db,
const char *zName,
int enc,
void(*xDel)(void*)
){
int rc;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(db->mutex);
assert( !db->mallocFailed );
rc = createCollation(db, zName, (u8)enc, pCtx, xCompare, xDel);
/*
** Register a new collation sequence with the database handle db.
*/
-SQLITE_API int sqlite3_create_collation16(
+SQLITE_API int SQLITE_STDCALL sqlite3_create_collation16(
sqlite3* db,
const void *zName,
int enc,
){
int rc = SQLITE_OK;
char *zName8;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(db->mutex);
assert( !db->mallocFailed );
zName8 = sqlite3Utf16to8(db, zName, -1, SQLITE_UTF16NATIVE);
** Register a collation sequence factory callback with the database handle
** db. Replace any previously installed collation sequence factory.
*/
-SQLITE_API int sqlite3_collation_needed(
+SQLITE_API int SQLITE_STDCALL sqlite3_collation_needed(
sqlite3 *db,
void *pCollNeededArg,
void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*)
){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(db->mutex);
db->xCollNeeded = xCollNeeded;
db->xCollNeeded16 = 0;
** Register a collation sequence factory callback with the database handle
** db. Replace any previously installed collation sequence factory.
*/
-SQLITE_API int sqlite3_collation_needed16(
+SQLITE_API int SQLITE_STDCALL sqlite3_collation_needed16(
sqlite3 *db,
void *pCollNeededArg,
void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*)
){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(db->mutex);
db->xCollNeeded = 0;
db->xCollNeeded16 = xCollNeeded16;
** This function is now an anachronism. It used to be used to recover from a
** malloc() failure, but SQLite now does this automatically.
*/
-SQLITE_API int sqlite3_global_recover(void){
+SQLITE_API int SQLITE_STDCALL sqlite3_global_recover(void){
return SQLITE_OK;
}
#endif
** by default. Autocommit is disabled by a BEGIN statement and reenabled
** by the next COMMIT or ROLLBACK.
*/
-SQLITE_API int sqlite3_get_autocommit(sqlite3 *db){
+SQLITE_API int SQLITE_STDCALL sqlite3_get_autocommit(sqlite3 *db){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
return db->autoCommit;
}
** SQLite no longer uses thread-specific data so this routine is now a
** no-op. It is retained for historical compatibility.
*/
-SQLITE_API void sqlite3_thread_cleanup(void){
+SQLITE_API void SQLITE_STDCALL sqlite3_thread_cleanup(void){
}
#endif
** Return meta information about a specific column of a database table.
** See comment in sqlite3.h (sqlite.h.in) for details.
*/
-#ifdef SQLITE_ENABLE_COLUMN_METADATA
-SQLITE_API int sqlite3_table_column_metadata(
+SQLITE_API int SQLITE_STDCALL sqlite3_table_column_metadata(
sqlite3 *db, /* Connection handle */
const char *zDbName, /* Database name or NULL */
const char *zTableName, /* Table name */
char *zErrMsg = 0;
Table *pTab = 0;
Column *pCol = 0;
- int iCol;
-
+ int iCol = 0;
char const *zDataType = 0;
char const *zCollSeq = 0;
int notnull = 0;
int primarykey = 0;
int autoinc = 0;
+
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) || zTableName==0 ){
+ return SQLITE_MISUSE_BKPT;
+ }
+#endif
+
/* Ensure the database schema has been loaded */
sqlite3_mutex_enter(db->mutex);
sqlite3BtreeEnterAll(db);
}
/* Find the column for which info is requested */
- if( sqlite3IsRowid(zColumnName) ){
- iCol = pTab->iPKey;
- if( iCol>=0 ){
- pCol = &pTab->aCol[iCol];
- }
+ if( zColumnName==0 ){
+ /* Query for existance of table only */
}else{
for(iCol=0; iCol<pTab->nCol; iCol++){
pCol = &pTab->aCol[iCol];
}
}
if( iCol==pTab->nCol ){
- pTab = 0;
- goto error_out;
+ if( HasRowid(pTab) && sqlite3IsRowid(zColumnName) ){
+ iCol = pTab->iPKey;
+ pCol = iCol>=0 ? &pTab->aCol[iCol] : 0;
+ }else{
+ pTab = 0;
+ goto error_out;
+ }
}
}
sqlite3_mutex_leave(db->mutex);
return rc;
}
-#endif
/*
** Sleep for a little while. Return the amount of time slept.
*/
-SQLITE_API int sqlite3_sleep(int ms){
+SQLITE_API int SQLITE_STDCALL sqlite3_sleep(int ms){
sqlite3_vfs *pVfs;
int rc;
pVfs = sqlite3_vfs_find(0);
/*
** Enable or disable the extended result codes.
*/
-SQLITE_API int sqlite3_extended_result_codes(sqlite3 *db, int onoff){
+SQLITE_API int SQLITE_STDCALL sqlite3_extended_result_codes(sqlite3 *db, int onoff){
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(db->mutex);
db->errMask = onoff ? 0xffffffff : 0xff;
sqlite3_mutex_leave(db->mutex);
/*
** Invoke the xFileControl method on a particular database.
*/
-SQLITE_API int sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, void *pArg){
+SQLITE_API int SQLITE_STDCALL sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, void *pArg){
int rc = SQLITE_ERROR;
Btree *pBtree;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
+#endif
sqlite3_mutex_enter(db->mutex);
pBtree = sqlite3DbNameToBtree(db, zDbName);
if( pBtree ){
sqlite3BtreeLeave(pBtree);
}
sqlite3_mutex_leave(db->mutex);
- return rc;
+ return rc;
}
/*
** Interface to the testing logic.
*/
-SQLITE_API int sqlite3_test_control(int op, ...){
+SQLITE_API int SQLITE_CDECL sqlite3_test_control(int op, ...){
int rc = 0;
#ifndef SQLITE_OMIT_BUILTIN_TEST
va_list ap;
if( sqlite3GlobalConfig.isInit==0 ) rc = SQLITE_ERROR;
break;
}
+
+ /* sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, db, dbName, onOff, tnum);
+ **
+ ** This test control is used to create imposter tables. "db" is a pointer
+ ** to the database connection. dbName is the database name (ex: "main" or
+ ** "temp") which will receive the imposter. "onOff" turns imposter mode on
+ ** or off. "tnum" is the root page of the b-tree to which the imposter
+ ** table should connect.
+ **
+ ** Enable imposter mode only when the schema has already been parsed. Then
+ ** run a single CREATE TABLE statement to construct the imposter table in
+ ** the parsed schema. Then turn imposter mode back off again.
+ **
+ ** If onOff==0 and tnum>0 then reset the schema for all databases, causing
+ ** the schema to be reparsed the next time it is needed. This has the
+ ** effect of erasing all imposter tables.
+ */
+ case SQLITE_TESTCTRL_IMPOSTER: {
+ sqlite3 *db = va_arg(ap, sqlite3*);
+ sqlite3_mutex_enter(db->mutex);
+ db->init.iDb = sqlite3FindDbName(db, va_arg(ap,const char*));
+ db->init.busy = db->init.imposterTable = va_arg(ap,int);
+ db->init.newTnum = va_arg(ap,int);
+ if( db->init.busy==0 && db->init.newTnum>0 ){
+ sqlite3ResetAllSchemasOfConnection(db);
+ }
+ sqlite3_mutex_leave(db->mutex);
+ break;
+ }
}
va_end(ap);
#endif /* SQLITE_OMIT_BUILTIN_TEST */
** parameter if it exists. If the parameter does not exist, this routine
** returns a NULL pointer.
*/
-SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam){
- if( zFilename==0 ) return 0;
+SQLITE_API const char *SQLITE_STDCALL sqlite3_uri_parameter(const char *zFilename, const char *zParam){
+ if( zFilename==0 || zParam==0 ) return 0;
zFilename += sqlite3Strlen30(zFilename) + 1;
while( zFilename[0] ){
int x = strcmp(zFilename, zParam);
/*
** Return a boolean value for a query parameter.
*/
-SQLITE_API int sqlite3_uri_boolean(const char *zFilename, const char *zParam, int bDflt){
+SQLITE_API int SQLITE_STDCALL sqlite3_uri_boolean(const char *zFilename, const char *zParam, int bDflt){
const char *z = sqlite3_uri_parameter(zFilename, zParam);
bDflt = bDflt!=0;
return z ? sqlite3GetBoolean(z, bDflt) : bDflt;
/*
** Return a 64-bit integer value for a query parameter.
*/
-SQLITE_API sqlite3_int64 sqlite3_uri_int64(
+SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_uri_int64(
const char *zFilename, /* Filename as passed to xOpen */
const char *zParam, /* URI parameter sought */
sqlite3_int64 bDflt /* return if parameter is missing */
** Return the filename of the database associated with a database
** connection.
*/
-SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName){
- Btree *pBt = sqlite3DbNameToBtree(db, zDbName);
+SQLITE_API const char *SQLITE_STDCALL sqlite3_db_filename(sqlite3 *db, const char *zDbName){
+ Btree *pBt;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return 0;
+ }
+#endif
+ pBt = sqlite3DbNameToBtree(db, zDbName);
return pBt ? sqlite3BtreeGetFilename(pBt) : 0;
}
** Return 1 if database is read-only or 0 if read/write. Return -1 if
** no such database exists.
*/
-SQLITE_API int sqlite3_db_readonly(sqlite3 *db, const char *zDbName){
- Btree *pBt = sqlite3DbNameToBtree(db, zDbName);
+SQLITE_API int SQLITE_STDCALL sqlite3_db_readonly(sqlite3 *db, const char *zDbName){
+ Btree *pBt;
+#ifdef SQLITE_ENABLE_API_ARMOR
+ if( !sqlite3SafetyCheckOk(db) ){
+ (void)SQLITE_MISUSE_BKPT;
+ return -1;
+ }
+#endif
+ pBt = sqlite3DbNameToBtree(db, zDbName);
return pBt ? sqlite3BtreeIsReadonly(pBt) : -1;
}
** on the same "db". If xNotify==0 then any prior callbacks are immediately
** cancelled.
*/
-SQLITE_API int sqlite3_unlock_notify(
+SQLITE_API int SQLITE_STDCALL sqlite3_unlock_notify(
sqlite3 *db,
void (*xNotify)(void **, int),
void *pArg
int bIncr; /* True if doclist is loaded incrementally */
int iDoclistToken;
+ /* Used by sqlite3Fts3EvalPhrasePoslist() if this is a descendent of an
+ ** OR condition. */
+ char *pOrPoslist;
+ i64 iOrDocid;
+
/* Variables below this point are populated by fts3_expr.c when parsing
** a MATCH expression. Everything above is part of the evaluation phase.
*/
** This function is used when parsing the "prefix=" FTS4 parameter.
*/
static int fts3GobbleInt(const char **pp, int *pnOut){
+ const int MAX_NPREFIX = 10000000;
const char *p; /* Iterator pointer */
int nInt = 0; /* Output value */
for(p=*pp; p[0]>='0' && p[0]<='9'; p++){
nInt = nInt * 10 + (p[0] - '0');
+ if( nInt>MAX_NPREFIX ){
+ nInt = 0;
+ break;
+ }
}
if( p==*pp ) return SQLITE_ERROR;
*pnOut = nInt;
aIndex = sqlite3_malloc(sizeof(struct Fts3Index) * nIndex);
*apIndex = aIndex;
- *pnIndex = nIndex;
if( !aIndex ){
return SQLITE_NOMEM;
}
const char *p = zParam;
int i;
for(i=1; i<nIndex; i++){
- int nPrefix;
+ int nPrefix = 0;
if( fts3GobbleInt(&p, &nPrefix) ) return SQLITE_ERROR;
- aIndex[i].nPrefix = nPrefix;
+ assert( nPrefix>=0 );
+ if( nPrefix==0 ){
+ nIndex--;
+ i--;
+ }else{
+ aIndex[i].nPrefix = nPrefix;
+ }
p++;
}
}
+ *pnIndex = nIndex;
return SQLITE_OK;
}
const char **aCol; /* Array of column names */
sqlite3_tokenizer *pTokenizer = 0; /* Tokenizer for this table */
- int nIndex; /* Size of aIndex[] array */
+ int nIndex = 0; /* Size of aIndex[] array */
struct Fts3Index *aIndex = 0; /* Array of indexes for this table */
/* The results of parsing supported FTS4 key=value options: */
sqlite3_int64 *piLeaf, /* Selected leaf node */
sqlite3_int64 *piLeaf2 /* Selected leaf node */
){
- int rc; /* Return code */
+ int rc = SQLITE_OK; /* Return code */
int iHeight; /* Height of this node in tree */
assert( piLeaf || piLeaf2 );
if( rc==SQLITE_OK && iHeight>1 ){
char *zBlob = 0; /* Blob read from %_segments table */
- int nBlob; /* Size of zBlob in bytes */
+ int nBlob = 0; /* Size of zBlob in bytes */
if( piLeaf && piLeaf2 && (*piLeaf!=*piLeaf2) ){
rc = sqlite3Fts3ReadBlock(p, *piLeaf, &zBlob, &nBlob, 0);
**
** The right-hand input doclist is overwritten by this function.
*/
-static void fts3DoclistPhraseMerge(
+static int fts3DoclistPhraseMerge(
int bDescDoclist, /* True if arguments are desc */
int nDist, /* Distance from left to right (1=adjacent) */
char *aLeft, int nLeft, /* Left doclist */
- char *aRight, int *pnRight /* IN/OUT: Right/output doclist */
+ char **paRight, int *pnRight /* IN/OUT: Right/output doclist */
){
sqlite3_int64 i1 = 0;
sqlite3_int64 i2 = 0;
sqlite3_int64 iPrev = 0;
+ char *aRight = *paRight;
char *pEnd1 = &aLeft[nLeft];
char *pEnd2 = &aRight[*pnRight];
char *p1 = aLeft;
char *p2 = aRight;
char *p;
int bFirstOut = 0;
- char *aOut = aRight;
+ char *aOut;
assert( nDist>0 );
-
+ if( bDescDoclist ){
+ aOut = sqlite3_malloc(*pnRight + FTS3_VARINT_MAX);
+ if( aOut==0 ) return SQLITE_NOMEM;
+ }else{
+ aOut = aRight;
+ }
p = aOut;
+
fts3GetDeltaVarint3(&p1, pEnd1, 0, &i1);
fts3GetDeltaVarint3(&p2, pEnd2, 0, &i2);
}
*pnRight = (int)(p - aOut);
+ if( bDescDoclist ){
+ sqlite3_free(aRight);
+ *paRight = aOut;
+ }
+
+ return SQLITE_OK;
}
/*
){
if( pTS->aaOutput[0]==0 ){
/* If this is the first term selected, copy the doclist to the output
- ** buffer using memcpy(). */
- pTS->aaOutput[0] = sqlite3_malloc(nDoclist);
+ ** buffer using memcpy().
+ **
+ ** Add FTS3_VARINT_MAX bytes of unused space to the end of the
+ ** allocation. This is so as to ensure that the buffer is big enough
+ ** to hold the current doclist AND'd with any other doclist. If the
+ ** doclists are stored in order=ASC order, this padding would not be
+ ** required (since the size of [doclistA AND doclistB] is always less
+ ** than or equal to the size of [doclistA] in that case). But this is
+ ** not true for order=DESC. For example, a doclist containing (1, -1)
+ ** may be smaller than (-1), as in the first example the -1 may be stored
+ ** as a single-byte delta, whereas in the second it must be stored as a
+ ** FTS3_VARINT_MAX byte varint.
+ **
+ ** Similar padding is added in the fts3DoclistOrMerge() function.
+ */
+ pTS->aaOutput[0] = sqlite3_malloc(nDoclist + FTS3_VARINT_MAX + 1);
pTS->anOutput[0] = nDoclist;
if( pTS->aaOutput[0] ){
memcpy(pTS->aaOutput[0], aDoclist, nDoclist);
int nVal, /* Number of elements in apVal */
sqlite3_value **apVal /* Arguments for the indexing scheme */
){
- int rc;
+ int rc = SQLITE_OK;
char *zSql; /* SQL statement used to access %_content */
int eSearch;
Fts3Table *p = (Fts3Table *)pCursor->pVtab;
** row by docid.
*/
if( eSearch==FTS3_FULLSCAN_SEARCH ){
- zSql = sqlite3_mprintf(
- "SELECT %s ORDER BY rowid %s",
- p->zReadExprlist, (pCsr->bDesc ? "DESC" : "ASC")
- );
+ if( pDocidGe || pDocidLe ){
+ zSql = sqlite3_mprintf(
+ "SELECT %s WHERE rowid BETWEEN %lld AND %lld ORDER BY rowid %s",
+ p->zReadExprlist, pCsr->iMinDocid, pCsr->iMaxDocid,
+ (pCsr->bDesc ? "DESC" : "ASC")
+ );
+ }else{
+ zSql = sqlite3_mprintf("SELECT %s ORDER BY rowid %s",
+ p->zReadExprlist, (pCsr->bDesc ? "DESC" : "ASC")
+ );
+ }
if( zSql ){
rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0);
sqlite3_free(zSql);
** This function assumes that pList points to a buffer allocated using
** sqlite3_malloc(). This function takes responsibility for eventually
** freeing the buffer.
+**
+** SQLITE_OK is returned if successful, or SQLITE_NOMEM if an error occurs.
*/
-static void fts3EvalPhraseMergeToken(
+static int fts3EvalPhraseMergeToken(
Fts3Table *pTab, /* FTS Table pointer */
Fts3Phrase *p, /* Phrase to merge pList/nList into */
int iToken, /* Token pList/nList corresponds to */
char *pList, /* Pointer to doclist */
int nList /* Number of bytes in pList */
){
+ int rc = SQLITE_OK;
assert( iToken!=p->iDoclistToken );
if( pList==0 ){
nDiff = p->iDoclistToken - iToken;
}
- fts3DoclistPhraseMerge(pTab->bDescIdx, nDiff, pLeft, nLeft, pRight,&nRight);
+ rc = fts3DoclistPhraseMerge(
+ pTab->bDescIdx, nDiff, pLeft, nLeft, &pRight, &nRight
+ );
sqlite3_free(pLeft);
p->doclist.aAll = pRight;
p->doclist.nAll = nRight;
}
if( iToken>p->iDoclistToken ) p->iDoclistToken = iToken;
+ return rc;
}
/*
char *pThis = 0;
rc = fts3TermSelect(pTab, pToken, p->iColumn, &nThis, &pThis);
if( rc==SQLITE_OK ){
- fts3EvalPhraseMergeToken(pTab, p, iToken, pThis, nThis);
+ rc = fts3EvalPhraseMergeToken(pTab, p, iToken, pThis, nThis);
}
}
assert( pToken->pSegcsr==0 );
char *pList = 0;
rc = fts3TermSelect(pTab, pToken, pTC->iCol, &nList, &pList);
assert( rc==SQLITE_OK || pList==0 );
+ if( rc==SQLITE_OK ){
+ rc = fts3EvalPhraseMergeToken(
+ pTab, pTC->pPhrase, pTC->iToken,pList,nList
+ );
+ }
if( rc==SQLITE_OK ){
int nCount;
- fts3EvalPhraseMergeToken(pTab, pTC->pPhrase, pTC->iToken,pList,nList);
nCount = fts3DoclistCountDocids(
pTC->pPhrase->doclist.aAll, pTC->pPhrase->doclist.nAll
);
}
pExpr->iDocid = pLeft->iDocid;
pExpr->bEof = (pLeft->bEof || pRight->bEof);
+ if( pExpr->eType==FTSQUERY_NEAR && pExpr->bEof ){
+ if( pRight->pPhrase && pRight->pPhrase->doclist.aAll ){
+ Fts3Doclist *pDl = &pRight->pPhrase->doclist;
+ while( *pRc==SQLITE_OK && pRight->bEof==0 ){
+ memset(pDl->pList, 0, pDl->nList);
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ }
+ }
+ if( pLeft->pPhrase && pLeft->pPhrase->doclist.aAll ){
+ Fts3Doclist *pDl = &pLeft->pPhrase->doclist;
+ while( *pRc==SQLITE_OK && pLeft->bEof==0 ){
+ memset(pDl->pList, 0, pDl->nList);
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ }
+ }
+ }
}
break;
}
}
pPhrase->doclist.pNextDocid = 0;
pPhrase->doclist.iDocid = 0;
+ pPhrase->pOrPoslist = 0;
}
pExpr->iDocid = 0;
iDocid = pExpr->iDocid;
pIter = pPhrase->doclist.pList;
if( iDocid!=pCsr->iPrevId || pExpr->bEof ){
+ int rc = SQLITE_OK;
int bDescDoclist = pTab->bDescIdx; /* For DOCID_CMP macro */
- int iMul; /* +1 if csr dir matches index dir, else -1 */
int bOr = 0;
u8 bEof = 0;
u8 bTreeEof = 0;
** an incremental phrase. Load the entire doclist for the phrase
** into memory in this case. */
if( pPhrase->bIncr ){
- int rc = SQLITE_OK;
- int bEofSave = pExpr->bEof;
- fts3EvalRestart(pCsr, pExpr, &rc);
- while( rc==SQLITE_OK && !pExpr->bEof ){
- fts3EvalNextRow(pCsr, pExpr, &rc);
- if( bEofSave==0 && pExpr->iDocid==iDocid ) break;
+ int bEofSave = pNear->bEof;
+ fts3EvalRestart(pCsr, pNear, &rc);
+ while( rc==SQLITE_OK && !pNear->bEof ){
+ fts3EvalNextRow(pCsr, pNear, &rc);
+ if( bEofSave==0 && pNear->iDocid==iDocid ) break;
}
- pIter = pPhrase->doclist.pList;
assert( rc!=SQLITE_OK || pPhrase->bIncr==0 );
- if( rc!=SQLITE_OK ) return rc;
}
-
- iMul = ((pCsr->bDesc==bDescDoclist) ? 1 : -1);
- while( bTreeEof==1
- && pNear->bEof==0
- && (DOCID_CMP(pNear->iDocid, pCsr->iPrevId) * iMul)<0
- ){
- int rc = SQLITE_OK;
- fts3EvalNextRow(pCsr, pExpr, &rc);
- if( rc!=SQLITE_OK ) return rc;
- iDocid = pExpr->iDocid;
- pIter = pPhrase->doclist.pList;
+ if( bTreeEof ){
+ while( rc==SQLITE_OK && !pNear->bEof ){
+ fts3EvalNextRow(pCsr, pNear, &rc);
+ }
}
+ if( rc!=SQLITE_OK ) return rc;
- bEof = (pPhrase->doclist.nAll==0);
- assert( bDescDoclist==0 || bDescDoclist==1 );
- assert( pCsr->bDesc==0 || pCsr->bDesc==1 );
-
- if( bEof==0 ){
- if( pCsr->bDesc==bDescDoclist ){
+ pIter = pPhrase->pOrPoslist;
+ iDocid = pPhrase->iOrDocid;
+ if( pCsr->bDesc==bDescDoclist ){
+ bEof = (pIter >= (pPhrase->doclist.aAll + pPhrase->doclist.nAll));
+ while( (pIter==0 || DOCID_CMP(iDocid, pCsr->iPrevId)<0 ) && bEof==0 ){
+ sqlite3Fts3DoclistNext(
+ bDescDoclist, pPhrase->doclist.aAll, pPhrase->doclist.nAll,
+ &pIter, &iDocid, &bEof
+ );
+ }
+ }else{
+ bEof = !pPhrase->doclist.nAll || (pIter && pIter<=pPhrase->doclist.aAll);
+ while( (pIter==0 || DOCID_CMP(iDocid, pCsr->iPrevId)>0 ) && bEof==0 ){
int dummy;
- if( pNear->bEof ){
- /* This expression is already at EOF. So position it to point to the
- ** last entry in the doclist at pPhrase->doclist.aAll[]. Variable
- ** iDocid is already set for this entry, so all that is required is
- ** to set pIter to point to the first byte of the last position-list
- ** in the doclist.
- **
- ** It would also be correct to set pIter and iDocid to zero. In
- ** this case, the first call to sqltie3Fts4DoclistPrev() below
- ** would also move the iterator to point to the last entry in the
- ** doclist. However, this is expensive, as to do so it has to
- ** iterate through the entire doclist from start to finish (since
- ** it does not know the docid for the last entry). */
- pIter = &pPhrase->doclist.aAll[pPhrase->doclist.nAll-1];
- fts3ReversePoslist(pPhrase->doclist.aAll, &pIter);
- }
- while( (pIter==0 || DOCID_CMP(iDocid, pCsr->iPrevId)>0 ) && bEof==0 ){
- sqlite3Fts3DoclistPrev(
- bDescDoclist, pPhrase->doclist.aAll, pPhrase->doclist.nAll,
- &pIter, &iDocid, &dummy, &bEof
- );
- }
- }else{
- if( pNear->bEof ){
- pIter = 0;
- iDocid = 0;
- }
- while( (pIter==0 || DOCID_CMP(iDocid, pCsr->iPrevId)<0 ) && bEof==0 ){
- sqlite3Fts3DoclistNext(
- bDescDoclist, pPhrase->doclist.aAll, pPhrase->doclist.nAll,
- &pIter, &iDocid, &bEof
- );
- }
+ sqlite3Fts3DoclistPrev(
+ bDescDoclist, pPhrase->doclist.aAll, pPhrase->doclist.nAll,
+ &pIter, &iDocid, &dummy, &bEof
+ );
}
}
+ pPhrase->pOrPoslist = pIter;
+ pPhrase->iOrDocid = iDocid;
if( bEof || iDocid!=pCsr->iPrevId ) pIter = 0;
}
}
while( iThis<iCol ){
fts3ColumnlistCopy(0, &pIter);
- if( *pIter==0x00 ) return 0;
+ if( *pIter==0x00 ) return SQLITE_OK;
pIter++;
pIter += fts3GetVarint32(pIter, &iThis);
}
+ if( *pIter==0x00 ){
+ pIter = 0;
+ }
*ppOut = ((iCol==iThis)?pIter:0);
return SQLITE_OK;
#ifdef _WIN32
__declspec(dllexport)
#endif
-SQLITE_API int sqlite3_fts3_init(
+SQLITE_API int SQLITE_STDCALL sqlite3_fts3_init(
sqlite3 *db,
char **pzErrMsg,
const sqlite3_api_routines *pApi
** by a consonant.
**
** In this routine z[] is in reverse order. So we are really looking
-** for an instance of of a consonant followed by a vowel.
+** for an instance of a consonant followed by a vowel.
*/
static int m_gt_0(const char *z){
while( isVowel(z) ){ z++; }
if( argc==2 ){
void *pOld;
int n = sqlite3_value_bytes(argv[1]);
- if( n!=sizeof(pPtr) ){
+ if( zName==0 || n!=sizeof(pPtr) ){
sqlite3_result_error(context, "argument type mismatch", -1);
return;
}
return;
}
}else{
- pPtr = sqlite3Fts3HashFind(pHash, zName, nName);
+ if( zName ){
+ pPtr = sqlite3Fts3HashFind(pHash, zName, nName);
+ }
if( !pPtr ){
char *zErr = sqlite3_mprintf("unknown tokenizer: %s", zName);
sqlite3_result_error(context, zErr, -1);
zEnd = &zCopy[strlen(zCopy)];
z = (char *)sqlite3Fts3NextToken(zCopy, &n);
+ if( z==0 ){
+ assert( n==0 );
+ z = zCopy;
+ }
z[n] = '\0';
sqlite3Fts3Dequote(z);
sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */
char **pzErr /* OUT: sqlite3_malloc'd error message */
){
- Fts3tokTable *pTab;
+ Fts3tokTable *pTab = 0;
const sqlite3_tokenizer_module *pMod = 0;
sqlite3_tokenizer *pTok = 0;
int rc;
** an array of pending terms by term. This occurs as part of flushing
** the contents of the pending-terms hash table to the database.
*/
-static int fts3CompareElemByTerm(const void *lhs, const void *rhs){
+static int SQLITE_CDECL fts3CompareElemByTerm(
+ const void *lhs,
+ const void *rhs
+){
char *z1 = fts3HashKey(*(Fts3HashElem **)lhs);
char *z2 = fts3HashKey(*(Fts3HashElem **)rhs);
int n1 = fts3HashKeysize(*(Fts3HashElem **)lhs);
if( bOk ){
int iIdx = 0;
- sqlite3_stmt *pUpdate1;
- sqlite3_stmt *pUpdate2;
+ sqlite3_stmt *pUpdate1 = 0;
+ sqlite3_stmt *pUpdate2 = 0;
if( rc==SQLITE_OK ){
rc = fts3SqlStmt(p, SQL_UPDATE_LEVEL_IDX, &pUpdate1, 0);
sIter.nSnippet = nSnippet;
sIter.nPhrase = nList;
sIter.iCurrent = -1;
- (void)fts3ExprIterate(pCsr->pExpr, fts3SnippetFindPositions, (void *)&sIter);
+ rc = fts3ExprIterate(pCsr->pExpr, fts3SnippetFindPositions, (void *)&sIter);
+ if( rc==SQLITE_OK ){
- /* Set the *pmSeen output variable. */
- for(i=0; i<nList; i++){
- if( sIter.aPhrase[i].pHead ){
- *pmSeen |= (u64)1 << i;
+ /* Set the *pmSeen output variable. */
+ for(i=0; i<nList; i++){
+ if( sIter.aPhrase[i].pHead ){
+ *pmSeen |= (u64)1 << i;
+ }
}
- }
- /* Loop through all candidate snippets. Store the best snippet in
- ** *pFragment. Store its associated 'score' in iBestScore.
- */
- pFragment->iCol = iCol;
- while( !fts3SnippetNextCandidate(&sIter) ){
- int iPos;
- int iScore;
- u64 mCover;
- u64 mHighlight;
- fts3SnippetDetails(&sIter, mCovered, &iPos, &iScore, &mCover, &mHighlight);
- assert( iScore>=0 );
- if( iScore>iBestScore ){
- pFragment->iPos = iPos;
- pFragment->hlmask = mHighlight;
- pFragment->covered = mCover;
- iBestScore = iScore;
+ /* Loop through all candidate snippets. Store the best snippet in
+ ** *pFragment. Store its associated 'score' in iBestScore.
+ */
+ pFragment->iCol = iCol;
+ while( !fts3SnippetNextCandidate(&sIter) ){
+ int iPos;
+ int iScore;
+ u64 mCover;
+ u64 mHighlite;
+ fts3SnippetDetails(&sIter, mCovered, &iPos, &iScore, &mCover,&mHighlite);
+ assert( iScore>=0 );
+ if( iScore>iBestScore ){
+ pFragment->iPos = iPos;
+ pFragment->hlmask = mHighlite;
+ pFragment->covered = mCover;
+ iBestScore = iScore;
+ }
}
- }
+ *piScore = iBestScore;
+ }
sqlite3_free(sIter.aPhrase);
- *piScore = iBestScore;
- return SQLITE_OK;
+ return rc;
}
** required. They are required if (a) this is not the first fragment,
** or (b) this fragment does not begin at position 0 of its column.
*/
- if( rc==SQLITE_OK && (iPos>0 || iFragment>0) ){
- rc = fts3StringAppend(pOut, zEllipsis, -1);
+ if( rc==SQLITE_OK ){
+ if( iPos>0 || iFragment>0 ){
+ rc = fts3StringAppend(pOut, zEllipsis, -1);
+ }else if( iBegin ){
+ rc = fts3StringAppend(pOut, zDoc, iBegin);
+ }
}
if( rc!=SQLITE_OK || iCurrent<iPos ) continue;
}
*/
for(iRead=0; iRead<pTab->nColumn; iRead++){
SnippetFragment sF = {0, 0, 0, 0};
- int iS;
+ int iS = 0;
if( iCol>=0 && iRead!=iCol ) continue;
/* Find the best snippet of nFToken tokens in column iRead. */
return (p[0]<<8) + p[1];
}
static void readCoord(u8 *p, RtreeCoord *pCoord){
- u32 i = (
+ pCoord->u = (
(((u32)p[0]) << 24) +
(((u32)p[1]) << 16) +
(((u32)p[2]) << 8) +
(((u32)p[3]) << 0)
);
- *(u32 *)pCoord = i;
}
static i64 readInt64(u8 *p){
return (
u32 i;
assert( sizeof(RtreeCoord)==4 );
assert( sizeof(u32)==4 );
- i = *(u32 *)pCoord;
+ i = pCoord->u;
p[0] = (i>>24)&0xFF;
p[1] = (i>>16)&0xFF;
p[2] = (i>> 8)&0xFF;
RtreeCell *pCell /* OUT: Write the cell contents here */
){
u8 *pData;
- u8 *pEnd;
RtreeCoord *pCoord;
+ int ii;
pCell->iRowid = nodeGetRowid(pRtree, pNode, iCell);
pData = pNode->zData + (12 + pRtree->nBytesPerCell*iCell);
- pEnd = pData + pRtree->nDim*8;
pCoord = pCell->aCoord;
- for(; pData<pEnd; pData+=4, pCoord++){
- readCoord(pData, pCoord);
+ for(ii=0; ii<pRtree->nDim*2; ii++){
+ readCoord(&pData[ii*4], &pCoord[ii]);
}
}
pNew = pCur->aPoint + i;
pNew->rScore = rScore;
pNew->iLevel = iLevel;
- assert( iLevel>=0 && iLevel<=RTREE_MAX_DEPTH );
+ assert( iLevel<=RTREE_MAX_DEPTH );
while( i>0 ){
RtreeSearchPoint *pParent;
j = (i-1)/2;
rtreeReference(pRtree);
assert(nData>=1);
+ cell.iRowid = 0; /* Used only to suppress a compiler warning */
+
/* Constraint handling. A write operation on an r-tree table may return
** SQLITE_CONSTRAINT for two reasons:
**
/*
** Register a new geometry function for use with the r-tree MATCH operator.
*/
-SQLITE_API int sqlite3_rtree_geometry_callback(
+SQLITE_API int SQLITE_STDCALL sqlite3_rtree_geometry_callback(
sqlite3 *db, /* Register SQL function on this connection */
const char *zGeom, /* Name of the new SQL function */
int (*xGeom)(sqlite3_rtree_geometry*,int,RtreeDValue*,int*), /* Callback */
** Register a new 2nd-generation geometry function for use with the
** r-tree MATCH operator.
*/
-SQLITE_API int sqlite3_rtree_query_callback(
+SQLITE_API int SQLITE_STDCALL sqlite3_rtree_query_callback(
sqlite3 *db, /* Register SQL function on this connection */
const char *zQueryFunc, /* Name of new SQL function */
int (*xQueryFunc)(sqlite3_rtree_query_info*), /* Callback */
#ifdef _WIN32
__declspec(dllexport)
#endif
-SQLITE_API int sqlite3_rtree_init(
+SQLITE_API int SQLITE_STDCALL sqlite3_rtree_init(
sqlite3 *db,
char **pzErrMsg,
const sqlite3_api_routines *pApi
#ifdef _WIN32
__declspec(dllexport)
#endif
-SQLITE_API int sqlite3_icu_init(
+SQLITE_API int SQLITE_STDCALL sqlite3_icu_init(
sqlite3 *db,
char **pzErrMsg,
const sqlite3_api_routines *pApi
projects / sqlite3-cmake.git / commitdiff