else ifeq ($(OSTYPE_$(1)), apple-ios)
JEMALLOC_ARGS_$(1) := --disable-tls
else ifeq ($(findstring android, $(OSTYPE_$(1))), android)
- JEMALLOC_ARGS_$(1) := --disable-tls
+ # We force android to have prefixed symbols because apparently replacement of
+ # the libc allocator doesn't quite work. When this was tested (unprefixed
+ # symbols), it was found that the `realpath` function in libc would allocate
+ # with libc malloc (not jemalloc malloc), and then the standard library would
+ # free with jemalloc free, causing a segfault.
+ #
+ # If the test suite passes, however, without symbol prefixes then we should be
+ # good to go!
+ JEMALLOC_ARGS_$(1) := --disable-tls --with-jemalloc-prefix=je_
endif
ifdef CFG_ENABLE_DEBUG_JEMALLOC
$$(JEMALLOC_LOCAL_$(1)): $$(JEMALLOC_DEPS) $$(MKFILE_DEPS)
@$$(call E, make: jemalloc)
cd "$$(JEMALLOC_BUILD_DIR_$(1))"; "$(S)src/jemalloc/configure" \
- $$(JEMALLOC_ARGS_$(1)) --with-jemalloc-prefix=je_ $(CFG_JEMALLOC_FLAGS) \
+ $$(JEMALLOC_ARGS_$(1)) $(CFG_JEMALLOC_FLAGS) \
--build=$$(CFG_GNU_TRIPLE_$(CFG_BUILD)) --host=$$(CFG_GNU_TRIPLE_$(1)) \
CC="$$(CC_$(1)) $$(CFG_JEMALLOC_CFLAGS_$(1))" \
AR="$$(AR_$(1))" \
.env("AR", &ar)
.env("RANLIB", format!("{} s", ar.display()));
- if target.contains("windows-gnu") {
+ if target.contains("windows") {
// A bit of history here, this used to be --enable-lazy-lock added in
// #14006 which was filed with jemalloc in jemalloc/jemalloc#83 which
// was also reported to MinGW:
// locking, but requires passing an option due to a historical
// default with jemalloc.
cmd.arg("--disable-lazy-lock");
- } else if target.contains("ios") || target.contains("android") {
+ } else if target.contains("ios") {
+ cmd.arg("--disable-tls");
+ } else if target.contains("android") {
+ // We force android to have prefixed symbols because apparently
+ // replacement of the libc allocator doesn't quite work. When this was
+ // tested (unprefixed symbols), it was found that the `realpath`
+ // function in libc would allocate with libc malloc (not jemalloc
+ // malloc), and then the standard library would free with jemalloc free,
+ // causing a segfault.
+ //
+ // If the test suite passes, however, without symbol prefixes then we
+ // should be good to go!
+ cmd.arg("--with-jemalloc-prefix=je_");
cmd.arg("--disable-tls");
}
// Turn off broken quarantine (see jemalloc/jemalloc#161)
cmd.arg("--disable-fill");
- cmd.arg("--with-jemalloc-prefix=je_");
cmd.arg(format!("--host={}", build_helper::gnu_target(&target)));
cmd.arg(format!("--build={}", build_helper::gnu_target(&host)));
#[cfg(not(cargobuild))]
extern {}
+// Note that the symbols here are prefixed by default on OSX (we don't
+// explicitly request it), and on Android we explicitly request it as
+// unprefixing cause segfaults (mismatches in allocators).
extern {
- fn je_mallocx(size: size_t, flags: c_int) -> *mut c_void;
- fn je_rallocx(ptr: *mut c_void, size: size_t, flags: c_int) -> *mut c_void;
- fn je_xallocx(ptr: *mut c_void, size: size_t, extra: size_t, flags: c_int) -> size_t;
- fn je_sdallocx(ptr: *mut c_void, size: size_t, flags: c_int);
- fn je_nallocx(size: size_t, flags: c_int) -> size_t;
+ #[cfg_attr(any(target_os = "macos", target_os = "android"),
+ link_name = "je_mallocx")]
+ fn mallocx(size: size_t, flags: c_int) -> *mut c_void;
+ #[cfg_attr(any(target_os = "macos", target_os = "android"),
+ link_name = "je_rallocx")]
+ fn rallocx(ptr: *mut c_void, size: size_t, flags: c_int) -> *mut c_void;
+ #[cfg_attr(any(target_os = "macos", target_os = "android"),
+ link_name = "je_xallocx")]
+ fn xallocx(ptr: *mut c_void, size: size_t, extra: size_t, flags: c_int) -> size_t;
+ #[cfg_attr(any(target_os = "macos", target_os = "android"),
+ link_name = "je_sdallocx")]
+ fn sdallocx(ptr: *mut c_void, size: size_t, flags: c_int);
+ #[cfg_attr(any(target_os = "macos", target_os = "android"),
+ link_name = "je_nallocx")]
+ fn nallocx(size: size_t, flags: c_int) -> size_t;
}
// The minimum alignment guaranteed by the architecture. This value is used to
#[no_mangle]
pub extern "C" fn __rust_allocate(size: usize, align: usize) -> *mut u8 {
let flags = align_to_flags(align);
- unsafe { je_mallocx(size as size_t, flags) as *mut u8 }
+ unsafe { mallocx(size as size_t, flags) as *mut u8 }
}
#[no_mangle]
align: usize)
-> *mut u8 {
let flags = align_to_flags(align);
- unsafe { je_rallocx(ptr as *mut c_void, size as size_t, flags) as *mut u8 }
+ unsafe { rallocx(ptr as *mut c_void, size as size_t, flags) as *mut u8 }
}
#[no_mangle]
align: usize)
-> usize {
let flags = align_to_flags(align);
- unsafe { je_xallocx(ptr as *mut c_void, size as size_t, 0, flags) as usize }
+ unsafe { xallocx(ptr as *mut c_void, size as size_t, 0, flags) as usize }
}
#[no_mangle]
pub extern "C" fn __rust_deallocate(ptr: *mut u8, old_size: usize, align: usize) {
let flags = align_to_flags(align);
- unsafe { je_sdallocx(ptr as *mut c_void, old_size as size_t, flags) }
+ unsafe { sdallocx(ptr as *mut c_void, old_size as size_t, flags) }
}
#[no_mangle]
pub extern "C" fn __rust_usable_size(size: usize, align: usize) -> usize {
let flags = align_to_flags(align);
- unsafe { je_nallocx(size as size_t, flags) as usize }
+ unsafe { nallocx(size as size_t, flags) as usize }
}
// These symbols are used by jemalloc on android but the really old android