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//=-- lsan_allocator.h ----------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// 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 AllocatorThreadStart();
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 !SANITIZER_CAN_USE_ALLOCATOR64
template <typename AddressSpaceViewTy>
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 = 20;
using AddressSpaceView = AddressSpaceViewTy;
typedef NoOpMapUnmapCallback MapUnmapCallback;
static const uptr kFlags = 0;
};
template <typename AddressSpaceView>
using PrimaryAllocatorASVT = SizeClassAllocator32<AP32<AddressSpaceView>>;
using PrimaryAllocator = PrimaryAllocatorASVT<LocalAddressSpaceView>;
#else
# if SANITIZER_FUCHSIA || defined(__powerpc64__)
const uptr kAllocatorSpace = ~(uptr)0;
# if SANITIZER_RISCV64
// See the comments in compiler-rt/lib/asan/asan_allocator.h for why these
// values were chosen.
const uptr kAllocatorSize = UINT64_C(1) << 33; // 8GB
using LSanSizeClassMap = SizeClassMap</*kNumBits=*/2,
/*kMinSizeLog=*/5,
/*kMidSizeLog=*/8,
/*kMaxSizeLog=*/18,
/*kNumCachedHintT=*/8,
/*kMaxBytesCachedLog=*/10>;
static_assert(LSanSizeClassMap::kNumClassesRounded <= 32,
"32 size classes is the optimal number to ensure tests run "
"effieciently on Fuchsia.");
# else
const uptr kAllocatorSize = 0x40000000000ULL; // 4T.
using LSanSizeClassMap = DefaultSizeClassMap;
# endif
# elif SANITIZER_RISCV64
const uptr kAllocatorSpace = ~(uptr)0;
const uptr kAllocatorSize = 0x2000000000ULL; // 128G.
using LSanSizeClassMap = DefaultSizeClassMap;
# elif SANITIZER_APPLE
const uptr kAllocatorSpace = 0x600000000000ULL;
const uptr kAllocatorSize = 0x40000000000ULL; // 4T.
using LSanSizeClassMap = DefaultSizeClassMap;
# else
const uptr kAllocatorSpace = 0x500000000000ULL;
const uptr kAllocatorSize = 0x40000000000ULL; // 4T.
using LSanSizeClassMap = DefaultSizeClassMap;
# endif
template <typename AddressSpaceViewTy>
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);
using SizeClassMap = LSanSizeClassMap;
typedef NoOpMapUnmapCallback MapUnmapCallback;
static const uptr kFlags = 0;
using AddressSpaceView = AddressSpaceViewTy;
};
template <typename AddressSpaceView>
using PrimaryAllocatorASVT = SizeClassAllocator64<AP64<AddressSpaceView>>;
using PrimaryAllocator = PrimaryAllocatorASVT<LocalAddressSpaceView>;
#endif
template <typename AddressSpaceView>
using AllocatorASVT = CombinedAllocator<PrimaryAllocatorASVT<AddressSpaceView>>;
using Allocator = AllocatorASVT<LocalAddressSpaceView>;
using AllocatorCache = Allocator::AllocatorCache;
Allocator::AllocatorCache *GetAllocatorCache();
int lsan_posix_memalign(void **memptr, uptr alignment, uptr size,
const StackTrace &stack);
void *lsan_aligned_alloc(uptr alignment, uptr size, const StackTrace &stack);
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_reallocarray(void *p, uptr nmemb, uptr size,
const StackTrace &stack);
void *lsan_calloc(uptr nmemb, uptr size, const StackTrace &stack);
void *lsan_valloc(uptr size, const StackTrace &stack);
void *lsan_pvalloc(uptr size, const StackTrace &stack);
uptr lsan_mz_size(const void *p);
} // namespace __lsan
#endif // LSAN_ALLOCATOR_H
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