lsan_allocator.h revision 1.1.1.2
1//=-- lsan_allocator.h ----------------------------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file is a part of LeakSanitizer. 10// Allocator for standalone LSan. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef LSAN_ALLOCATOR_H 15#define LSAN_ALLOCATOR_H 16 17#include "sanitizer_common/sanitizer_allocator.h" 18#include "sanitizer_common/sanitizer_common.h" 19#include "sanitizer_common/sanitizer_internal_defs.h" 20#include "lsan_common.h" 21 22namespace __lsan { 23 24void *Allocate(const StackTrace &stack, uptr size, uptr alignment, 25 bool cleared); 26void Deallocate(void *p); 27void *Reallocate(const StackTrace &stack, void *p, uptr new_size, 28 uptr alignment); 29uptr GetMallocUsableSize(const void *p); 30 31template<typename Callable> 32void ForEachChunk(const Callable &callback); 33 34void GetAllocatorCacheRange(uptr *begin, uptr *end); 35void AllocatorThreadFinish(); 36void InitializeAllocator(); 37 38const bool kAlwaysClearMemory = true; 39 40struct ChunkMetadata { 41 u8 allocated : 8; // Must be first. 42 ChunkTag tag : 2; 43#if SANITIZER_WORDSIZE == 64 44 uptr requested_size : 54; 45#else 46 uptr requested_size : 32; 47 uptr padding : 22; 48#endif 49 u32 stack_trace_id; 50}; 51 52#if defined(__mips64) || defined(__aarch64__) || defined(__i386__) || \ 53 defined(__arm__) 54template <typename AddressSpaceViewTy> 55struct AP32 { 56 static const uptr kSpaceBeg = 0; 57 static const u64 kSpaceSize = SANITIZER_MMAP_RANGE_SIZE; 58 static const uptr kMetadataSize = sizeof(ChunkMetadata); 59 typedef __sanitizer::CompactSizeClassMap SizeClassMap; 60 static const uptr kRegionSizeLog = 20; 61 using AddressSpaceView = AddressSpaceViewTy; 62 typedef NoOpMapUnmapCallback MapUnmapCallback; 63 static const uptr kFlags = 0; 64}; 65template <typename AddressSpaceView> 66using PrimaryAllocatorASVT = SizeClassAllocator32<AP32<AddressSpaceView>>; 67using PrimaryAllocator = PrimaryAllocatorASVT<LocalAddressSpaceView>; 68#elif defined(__x86_64__) || defined(__powerpc64__) || defined(__s390x__) 69# if SANITIZER_FUCHSIA 70const uptr kAllocatorSpace = ~(uptr)0; 71const uptr kAllocatorSize = 0x40000000000ULL; // 4T. 72# elif defined(__powerpc64__) 73const uptr kAllocatorSpace = 0xa0000000000ULL; 74const uptr kAllocatorSize = 0x20000000000ULL; // 2T. 75#elif defined(__s390x__) 76const uptr kAllocatorSpace = 0x40000000000ULL; 77const uptr kAllocatorSize = 0x40000000000ULL; // 4T. 78# else 79const uptr kAllocatorSpace = 0x600000000000ULL; 80const uptr kAllocatorSize = 0x40000000000ULL; // 4T. 81# endif 82template <typename AddressSpaceViewTy> 83struct AP64 { // Allocator64 parameters. Deliberately using a short name. 84 static const uptr kSpaceBeg = kAllocatorSpace; 85 static const uptr kSpaceSize = kAllocatorSize; 86 static const uptr kMetadataSize = sizeof(ChunkMetadata); 87 typedef DefaultSizeClassMap SizeClassMap; 88 typedef NoOpMapUnmapCallback MapUnmapCallback; 89 static const uptr kFlags = 0; 90 using AddressSpaceView = AddressSpaceViewTy; 91}; 92 93template <typename AddressSpaceView> 94using PrimaryAllocatorASVT = SizeClassAllocator64<AP64<AddressSpaceView>>; 95using PrimaryAllocator = PrimaryAllocatorASVT<LocalAddressSpaceView>; 96#endif 97 98template <typename AddressSpaceView> 99using AllocatorASVT = CombinedAllocator<PrimaryAllocatorASVT<AddressSpaceView>>; 100using Allocator = AllocatorASVT<LocalAddressSpaceView>; 101using AllocatorCache = Allocator::AllocatorCache; 102 103Allocator::AllocatorCache *GetAllocatorCache(); 104 105int lsan_posix_memalign(void **memptr, uptr alignment, uptr size, 106 const StackTrace &stack); 107void *lsan_aligned_alloc(uptr alignment, uptr size, const StackTrace &stack); 108void *lsan_memalign(uptr alignment, uptr size, const StackTrace &stack); 109void *lsan_malloc(uptr size, const StackTrace &stack); 110void lsan_free(void *p); 111void *lsan_realloc(void *p, uptr size, const StackTrace &stack); 112void *lsan_reallocarray(void *p, uptr nmemb, uptr size, 113 const StackTrace &stack); 114void *lsan_calloc(uptr nmemb, uptr size, const StackTrace &stack); 115void *lsan_valloc(uptr size, const StackTrace &stack); 116void *lsan_pvalloc(uptr size, const StackTrace &stack); 117uptr lsan_mz_size(const void *p); 118 119} // namespace __lsan 120 121#endif // LSAN_ALLOCATOR_H 122