1 //=-- lsan_allocator.h ----------------------------------------------------===//
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
7 //===----------------------------------------------------------------------===//
9 // This file is a part of LeakSanitizer.
10 // Allocator for standalone LSan.
12 //===----------------------------------------------------------------------===//
14 #ifndef LSAN_ALLOCATOR_H
15 #define LSAN_ALLOCATOR_H
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"
24 void *Allocate(const StackTrace &stack, uptr size, uptr alignment,
26 void Deallocate(void *p);
27 void *Reallocate(const StackTrace &stack, void *p, uptr new_size,
29 uptr GetMallocUsableSize(const void *p);
31 template<typename Callable>
32 void ForEachChunk(const Callable &callback);
34 void GetAllocatorCacheRange(uptr *begin, uptr *end);
35 void AllocatorThreadStart();
36 void AllocatorThreadFinish();
37 void InitializeAllocator();
39 const bool kAlwaysClearMemory = true;
41 struct ChunkMetadata {
42 u8 allocated : 8; // Must be first.
44 #if SANITIZER_WORDSIZE == 64
45 uptr requested_size : 54;
47 uptr requested_size : 32;
53 #if !SANITIZER_CAN_USE_ALLOCATOR64
54 template <typename AddressSpaceViewTy>
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;
65 template <typename AddressSpaceView>
66 using PrimaryAllocatorASVT = SizeClassAllocator32<AP32<AddressSpaceView>>;
67 using PrimaryAllocator = PrimaryAllocatorASVT<LocalAddressSpaceView>;
69 # if SANITIZER_FUCHSIA || defined(__powerpc64__)
70 const uptr kAllocatorSpace = ~(uptr)0;
71 const uptr kAllocatorSize = 0x40000000000ULL; // 4T.
72 # elif SANITIZER_APPLE
73 const uptr kAllocatorSpace = 0x600000000000ULL;
74 const uptr kAllocatorSize = 0x40000000000ULL; // 4T.
76 const uptr kAllocatorSpace = 0x500000000000ULL;
77 const uptr kAllocatorSize = 0x40000000000ULL; // 4T.
79 template <typename AddressSpaceViewTy>
80 struct AP64 { // Allocator64 parameters. Deliberately using a short name.
81 static const uptr kSpaceBeg = kAllocatorSpace;
82 static const uptr kSpaceSize = kAllocatorSize;
83 static const uptr kMetadataSize = sizeof(ChunkMetadata);
84 typedef DefaultSizeClassMap SizeClassMap;
85 typedef NoOpMapUnmapCallback MapUnmapCallback;
86 static const uptr kFlags = 0;
87 using AddressSpaceView = AddressSpaceViewTy;
90 template <typename AddressSpaceView>
91 using PrimaryAllocatorASVT = SizeClassAllocator64<AP64<AddressSpaceView>>;
92 using PrimaryAllocator = PrimaryAllocatorASVT<LocalAddressSpaceView>;
95 template <typename AddressSpaceView>
96 using AllocatorASVT = CombinedAllocator<PrimaryAllocatorASVT<AddressSpaceView>>;
97 using Allocator = AllocatorASVT<LocalAddressSpaceView>;
98 using AllocatorCache = Allocator::AllocatorCache;
100 Allocator::AllocatorCache *GetAllocatorCache();
102 int lsan_posix_memalign(void **memptr, uptr alignment, uptr size,
103 const StackTrace &stack);
104 void *lsan_aligned_alloc(uptr alignment, uptr size, const StackTrace &stack);
105 void *lsan_memalign(uptr alignment, uptr size, const StackTrace &stack);
106 void *lsan_malloc(uptr size, const StackTrace &stack);
107 void lsan_free(void *p);
108 void *lsan_realloc(void *p, uptr size, const StackTrace &stack);
109 void *lsan_reallocarray(void *p, uptr nmemb, uptr size,
110 const StackTrace &stack);
111 void *lsan_calloc(uptr nmemb, uptr size, const StackTrace &stack);
112 void *lsan_valloc(uptr size, const StackTrace &stack);
113 void *lsan_pvalloc(uptr size, const StackTrace &stack);
114 uptr lsan_mz_size(const void *p);
116 } // namespace __lsan
118 #endif // LSAN_ALLOCATOR_H