X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Fdebug.cpp;h=3c82ed9e1c23ec62e51fb5bc3e91d0c7608efa23;hb=a701d24a0070f3f581c47e5722aa07d4f89d7b98;hp=a197913a964dfd229698ad332d63398885a9aa42;hpb=f79082a46d5b2385ae5aebf9048d4ca8b87940c3;p=minetest.git

diff --git a/src/debug.cpp b/src/debug.cpp
index a197913a9..3c82ed9e1 100644
--- a/src/debug.cpp
+++ b/src/debug.cpp
@@ -1,261 +1,197 @@
 /*
-Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
 This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
 (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+GNU Lesser General Public License for more details.
 
-You should have received a copy of the GNU General Public License along
+You should have received a copy of the GNU Lesser General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
 
+#include "porting.h"
 #include "debug.h"
-#include <stdio.h>
-#include <stdlib.h>
+#include "exceptions.h"
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <map>
+#include <sstream>
+#include <thread>
+#include "threading/mutex_auto_lock.h"
+#include "config.h"
 
-/*
-	Debug output
-*/
-
-FILE *g_debugstreams[DEBUGSTREAM_COUNT] = {stderr, NULL};
-
-void debugstreams_init(bool disable_stderr, const char *filename)
-{
-	if(disable_stderr)
-		g_debugstreams[0] = NULL;
-	else
-		g_debugstreams[0] = stderr;
-
-	if(filename)
-		g_debugstreams[1] = fopen(filename, "a");
-		
-	if(g_debugstreams[1])
-	{
-		fprintf(g_debugstreams[1], "\n\n-------------\n");
-		fprintf(g_debugstreams[1],     "  Separator  \n");
-		fprintf(g_debugstreams[1],     "-------------\n\n");
-	}
-}
-
-void debugstreams_deinit()
-{
-	if(g_debugstreams[1] != NULL)
-		fclose(g_debugstreams[1]);
-}
+#ifdef _MSC_VER
+	#include <dbghelp.h>
+	#include "version.h"
+	#include "filesys.h"
+#endif
 
-Debugbuf debugbuf(false);
-std::ostream dstream(&debugbuf);
-Debugbuf debugbuf_no_stderr(true);
-std::ostream dstream_no_stderr(&debugbuf_no_stderr);
-Nullstream dummyout;
+#if USE_CURSES
+	#include "terminal_chat_console.h"
+#endif
 
 /*
 	Assert
 */
 
-void assert_fail(const char *assertion, const char *file,
+void sanity_check_fn(const char *assertion, const char *file,
 		unsigned int line, const char *function)
 {
-	DEBUGPRINT("\nIn thread %lx:\n"
-			"%s:%d: %s: Assertion '%s' failed.\n",
-			(unsigned long)get_current_thread_id(),
-			file, line, function, assertion);
-	
-	debug_stacks_print();
+#if USE_CURSES
+	g_term_console.stopAndWaitforThread();
+#endif
 
-	if(g_debugstreams[1])
-		fclose(g_debugstreams[1]);
+	errorstream << std::endl << "In thread " << std::hex
+		<< std::this_thread::get_id() << ":" << std::endl;
+	errorstream << file << ":" << line << ": " << function
+		<< ": An engine assumption '" << assertion << "' failed." << std::endl;
 
 	abort();
 }
 
-/*
-	DebugStack
-*/
-
-DebugStack::DebugStack(threadid_t id)
+void fatal_error_fn(const char *msg, const char *file,
+		unsigned int line, const char *function)
 {
-	threadid = id;
-	stack_i = 0;
-	stack_max_i = 0;
-	memset(stack, 0, DEBUG_STACK_SIZE*DEBUG_STACK_TEXT_SIZE);
-}
+#if USE_CURSES
+	g_term_console.stopAndWaitforThread();
+#endif
 
-void DebugStack::print(FILE *file, bool everything)
-{
-	fprintf(file, "DEBUG STACK FOR THREAD %lx:\n",
-			(unsigned long)threadid);
-
-	for(int i=0; i<stack_max_i; i++)
-	{
-		if(i == stack_i && everything == false)
-			break;
-
-		if(i < stack_i)
-			fprintf(file, "#%d  %s\n", i, stack[i]);
-		else
-			fprintf(file, "(Leftover data: #%d  %s)\n", i, stack[i]);
-	}
+	errorstream << std::endl << "In thread " << std::hex
+		<< std::this_thread::get_id() << ":" << std::endl;
+	errorstream << file << ":" << line << ": " << function
+		<< ": A fatal error occurred: " << msg << std::endl;
 
-	if(stack_i == DEBUG_STACK_SIZE)
-		fprintf(file, "Probably overflown.\n");
+	abort();
 }
 
-void DebugStack::print(std::ostream &os, bool everything)
-{
-	os<<"DEBUG STACK FOR THREAD "<<(unsigned long)threadid<<": "<<std::endl;
-
-	for(int i=0; i<stack_max_i; i++)
-	{
-		if(i == stack_i && everything == false)
-			break;
+#ifdef _MSC_VER
 
-		if(i < stack_i)
-			os<<"#"<<i<<"  "<<stack[i]<<std::endl;
-		else
-			os<<"(Leftover data: #"<<i<<"  "<<stack[i]<<")"<<std::endl;
+const char *Win32ExceptionCodeToString(DWORD exception_code)
+{
+	switch (exception_code) {
+	case EXCEPTION_ACCESS_VIOLATION:
+		return "Access violation";
+	case EXCEPTION_DATATYPE_MISALIGNMENT:
+		return "Misaligned data access";
+	case EXCEPTION_BREAKPOINT:
+		return "Breakpoint reached";
+	case EXCEPTION_SINGLE_STEP:
+		return "Single debug step";
+	case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
+		return "Array access out of bounds";
+	case EXCEPTION_FLT_DENORMAL_OPERAND:
+		return "Denormal floating point operand";
+	case EXCEPTION_FLT_DIVIDE_BY_ZERO:
+		return "Floating point division by zero";
+	case EXCEPTION_FLT_INEXACT_RESULT:
+		return "Inaccurate floating point result";
+	case EXCEPTION_FLT_INVALID_OPERATION:
+		return "Invalid floating point operation";
+	case EXCEPTION_FLT_OVERFLOW:
+		return "Floating point exponent overflow";
+	case EXCEPTION_FLT_STACK_CHECK:
+		return "Floating point stack overflow or underflow";
+	case EXCEPTION_FLT_UNDERFLOW:
+		return "Floating point exponent underflow";
+	case EXCEPTION_INT_DIVIDE_BY_ZERO:
+		return "Integer division by zero";
+	case EXCEPTION_INT_OVERFLOW:
+		return "Integer overflow";
+	case EXCEPTION_PRIV_INSTRUCTION:
+		return "Privileged instruction executed";
+	case EXCEPTION_IN_PAGE_ERROR:
+		return "Could not access or load page";
+	case EXCEPTION_ILLEGAL_INSTRUCTION:
+		return "Illegal instruction encountered";
+	case EXCEPTION_NONCONTINUABLE_EXCEPTION:
+		return "Attempted to continue after fatal exception";
+	case EXCEPTION_STACK_OVERFLOW:
+		return "Stack overflow";
+	case EXCEPTION_INVALID_DISPOSITION:
+		return "Invalid disposition returned to the exception dispatcher";
+	case EXCEPTION_GUARD_PAGE:
+		return "Attempted guard page access";
+	case EXCEPTION_INVALID_HANDLE:
+		return "Invalid handle";
 	}
 
-	if(stack_i == DEBUG_STACK_SIZE)
-		os<<"Probably overflown."<<std::endl;
+	return "Unknown exception";
 }
 
-core::map<threadid_t, DebugStack*> g_debug_stacks;
-JMutex g_debug_stacks_mutex;
-
-void debug_stacks_init()
+long WINAPI Win32ExceptionHandler(struct _EXCEPTION_POINTERS *pExceptInfo)
 {
-	g_debug_stacks_mutex.Init();
-}
+	char buf[512];
+	MINIDUMP_EXCEPTION_INFORMATION mdei;
+	MINIDUMP_USER_STREAM_INFORMATION mdusi;
+	MINIDUMP_USER_STREAM mdus;
+	bool minidump_created = false;
 
-void debug_stacks_print_to(std::ostream &os)
-{
-	JMutexAutoLock lock(g_debug_stacks_mutex);
+	std::string dumpfile = porting::path_user + DIR_DELIM PROJECT_NAME ".dmp";
 
-	os<<"Debug stacks:"<<std::endl;
+	std::string version_str(PROJECT_NAME " ");
+	version_str += g_version_hash;
 
-	for(core::map<threadid_t, DebugStack*>::Iterator
-			i = g_debug_stacks.getIterator();
-			i.atEnd() == false; i++)
-	{
-		DebugStack *stack = i.getNode()->getValue();
-		stack->print(os, false);
-	}
-}
+	HANDLE hFile = CreateFileA(dumpfile.c_str(), GENERIC_WRITE,
+		FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+	if (hFile == INVALID_HANDLE_VALUE)
+		goto minidump_failed;
 
-void debug_stacks_print()
-{
-	JMutexAutoLock lock(g_debug_stacks_mutex);
+	if (SetEndOfFile(hFile) == FALSE)
+		goto minidump_failed;
 
-	DEBUGPRINT("Debug stacks:\n");
+	mdei.ClientPointers	   = NULL;
+	mdei.ExceptionPointers = pExceptInfo;
+	mdei.ThreadId		   = GetCurrentThreadId();
 
-	for(core::map<threadid_t, DebugStack*>::Iterator
-			i = g_debug_stacks.getIterator();
-			i.atEnd() == false; i++)
-	{
-		DebugStack *stack = i.getNode()->getValue();
+	mdus.Type       = CommentStreamA;
+	mdus.BufferSize = version_str.size();
+	mdus.Buffer     = (PVOID)version_str.c_str();
 
-		for(int i=0; i<DEBUGSTREAM_COUNT; i++)
-		{
-			if(g_debugstreams[i] != NULL)
-				stack->print(g_debugstreams[i], true);
-		}
-	}
-}
+	mdusi.UserStreamArray = &mdus;
+	mdusi.UserStreamCount = 1;
 
-DebugStacker::DebugStacker(const char *text)
-{
-	threadid_t threadid = get_current_thread_id();
+	if (MiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(), hFile,
+			MiniDumpNormal, &mdei, &mdusi, NULL) == FALSE)
+		goto minidump_failed;
 
-	JMutexAutoLock lock(g_debug_stacks_mutex);
+	minidump_created = true;
 
-	core::map<threadid_t, DebugStack*>::Node *n;
-	n = g_debug_stacks.find(threadid);
-	if(n != NULL)
-	{
-		m_stack = n->getValue();
-	}
-	else
-	{
-		/*DEBUGPRINT("Creating new debug stack for thread %x\n",
-				(unsigned int)threadid);*/
-		m_stack = new DebugStack(threadid);
-		g_debug_stacks.insert(threadid, m_stack);
-	}
+minidump_failed:
 
-	if(m_stack->stack_i >= DEBUG_STACK_SIZE)
-	{
-		m_overflowed = true;
-	}
+	CloseHandle(hFile);
+
+	DWORD excode = pExceptInfo->ExceptionRecord->ExceptionCode;
+	_snprintf(buf, sizeof(buf),
+		" >> === FATAL ERROR ===\n"
+		" >> %s (Exception 0x%08X) at 0x%p\n",
+		Win32ExceptionCodeToString(excode), excode,
+		pExceptInfo->ExceptionRecord->ExceptionAddress);
+	dstream << buf;
+
+	if (minidump_created)
+		dstream << " >> Saved dump to " << dumpfile << std::endl;
 	else
-	{
-		m_overflowed = false;
-
-		snprintf(m_stack->stack[m_stack->stack_i],
-				DEBUG_STACK_TEXT_SIZE, "%s", text);
-		m_stack->stack_i++;
-		if(m_stack->stack_i > m_stack->stack_max_i)
-			m_stack->stack_max_i = m_stack->stack_i;
-	}
-}
+		dstream << " >> Failed to save dump" << std::endl;
 
-DebugStacker::~DebugStacker()
-{
-	JMutexAutoLock lock(g_debug_stacks_mutex);
-	
-	if(m_overflowed == true)
-		return;
-	
-	m_stack->stack_i--;
-
-	if(m_stack->stack_i == 0)
-	{
-		threadid_t threadid = m_stack->threadid;
-		/*DEBUGPRINT("Deleting debug stack for thread %x\n",
-				(unsigned int)threadid);*/
-		delete m_stack;
-		g_debug_stacks.remove(threadid);
-	}
+	return EXCEPTION_EXECUTE_HANDLER;
 }
 
+#endif
 
-#ifdef _MSC_VER
-#if CATCH_UNHANDLED_EXCEPTIONS == 1
-void se_trans_func(unsigned int u, EXCEPTION_POINTERS* pExp)
+void debug_set_exception_handler()
 {
-	dstream<<"In trans_func.\n";
-	if(u == EXCEPTION_ACCESS_VIOLATION)
-	{
-		PEXCEPTION_RECORD r = pExp->ExceptionRecord;
-		dstream<<"Access violation at "<<r->ExceptionAddress
-				<<" write?="<<r->ExceptionInformation[0]
-				<<" address="<<r->ExceptionInformation[1]
-				<<std::endl;
-		throw FatalSystemException
-		("Access violation");
-	}
-	if(u == EXCEPTION_STACK_OVERFLOW)
-	{
-		throw FatalSystemException
-		("Stack overflow");
-	}
-	if(u == EXCEPTION_ILLEGAL_INSTRUCTION)
-	{
-		throw FatalSystemException
-		("Illegal instruction");
-	}
-}
-#endif
+#ifdef _MSC_VER
+	SetUnhandledExceptionFilter(Win32ExceptionHandler);
 #endif
-
-
+}