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//=-- lsan_allocator.h ----------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of LeakSanitizer.
// Allocator for standalone LSan.
//
//===----------------------------------------------------------------------===//
#ifndef LSAN_ALLOCATOR_H
#define LSAN_ALLOCATOR_H
#include "sanitizer_common/sanitizer_allocator.h"
#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_internal_defs.h"
#include "lsan_common.h"
namespace __lsan {
void *Allocate(const StackTrace &stack, uptr size, uptr alignment,
bool cleared);
void Deallocate(void *p);
void *Reallocate(const StackTrace &stack, void *p, uptr new_size,
uptr alignment);
uptr GetMallocUsableSize(const void *p);
template<typename Callable>
void ForEachChunk(const Callable &callback);
void GetAllocatorCacheRange(uptr *begin, uptr *end);
void AllocatorThreadFinish();
void InitializeAllocator();
const bool kAlwaysClearMemory = true;
struct ChunkMetadata {
u8 allocated : 8; // Must be first.
ChunkTag tag : 2;
#if SANITIZER_WORDSIZE == 64
uptr requested_size : 54;
#else
uptr requested_size : 32;
uptr padding : 22;
#endif
u32 stack_trace_id;
};
#if defined(__mips64) || defined(__aarch64__) || defined(__i386__) || \
defined(__arm__)
static const uptr kRegionSizeLog = 20;
static const uptr kNumRegions = SANITIZER_MMAP_RANGE_SIZE >> kRegionSizeLog;
typedef TwoLevelByteMap<(kNumRegions >> 12), 1 << 12> ByteMap;
struct AP32 {
static const uptr kSpaceBeg = 0;
static const u64 kSpaceSize = SANITIZER_MMAP_RANGE_SIZE;
static const uptr kMetadataSize = sizeof(ChunkMetadata);
typedef __sanitizer::CompactSizeClassMap SizeClassMap;
static const uptr kRegionSizeLog = __lsan::kRegionSizeLog;
typedef __lsan::ByteMap ByteMap;
typedef NoOpMapUnmapCallback MapUnmapCallback;
static const uptr kFlags = 0;
};
typedef SizeClassAllocator32<AP32> PrimaryAllocator;
#elif defined(__x86_64__) || defined(__powerpc64__)
# if defined(__powerpc64__)
const uptr kAllocatorSpace = 0xa0000000000ULL;
const uptr kAllocatorSize = 0x20000000000ULL; // 2T.
# else
const uptr kAllocatorSpace = 0x600000000000ULL;
const uptr kAllocatorSize = 0x40000000000ULL; // 4T.
# endif
struct AP64 { // Allocator64 parameters. Deliberately using a short name.
static const uptr kSpaceBeg = kAllocatorSpace;
static const uptr kSpaceSize = kAllocatorSize;
static const uptr kMetadataSize = sizeof(ChunkMetadata);
typedef DefaultSizeClassMap SizeClassMap;
typedef NoOpMapUnmapCallback MapUnmapCallback;
static const uptr kFlags = 0;
};
typedef SizeClassAllocator64<AP64> PrimaryAllocator;
#endif
typedef SizeClassAllocatorLocalCache<PrimaryAllocator> AllocatorCache;
AllocatorCache *GetAllocatorCache();
void *lsan_memalign(uptr alignment, uptr size, const StackTrace &stack);
void *lsan_malloc(uptr size, const StackTrace &stack);
void lsan_free(void *p);
void *lsan_realloc(void *p, uptr size, const StackTrace &stack);
void *lsan_calloc(uptr nmemb, uptr size, const StackTrace &stack);
void *lsan_valloc(uptr size, const StackTrace &stack);
uptr lsan_mz_size(const void *p);
} // namespace __lsan
#endif // LSAN_ALLOCATOR_H
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