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[Sanitizer] Use __libc_malloc/__libc_free instead of malloc/free inside internal allocator on Linux (important for TSan)

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llvm-svn: 158261
This commit is contained in:
Alexey Samsonov 2012-06-09 09:21:44 +00:00
parent f516d39c1f
commit bb62f555f3
1 changed files with 12 additions and 3 deletions
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15
compiler-rt/lib/sanitizer_common/sanitizer_allocator.cc
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@ -15,14 +15,23 @@
// FIXME: We should probably use more low-level allocator that would
// mmap some pages and split them into chunks to fulfill requests.
#include <stdlib.h>
#ifdef __linux__
extern "C" void *__libc_malloc(__sanitizer::uptr size);
extern "C" void __libc_free(void *ptr);
# define LIBC_MALLOC __libc_malloc
# define LIBC_FREE __libc_free
#else // __linux__
# include <stdlib.h>
# define LIBC_MALLOC malloc
# define LIBC_FREE free
#endif // __linux__
namespace __sanitizer {
static const u64 kInternalAllocBlockMagic = 0x7A6CB03ABCEBC042ull;
void *InternalAlloc(uptr size) {
void *p = malloc(size + sizeof(u64));
void *p = LIBC_MALLOC(size + sizeof(u64));
((u64*)p)[0] = kInternalAllocBlockMagic;
return (char*)p + sizeof(u64);
}
@ -32,7 +41,7 @@ void InternalFree(void *addr) {
addr = (char*)addr - sizeof(u64);
CHECK_EQ(((u64*)addr)[0], kInternalAllocBlockMagic);
((u64*)addr)[0] = 0;
free(addr);
LIBC_FREE(addr);
}
} // namespace __sanitizer