1 //=-- lsan_allocator.h ----------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file is a part of LeakSanitizer.
11 // Allocator for standalone LSan.
13 //===----------------------------------------------------------------------===//
15 #ifndef LSAN_ALLOCATOR_H
16 #define LSAN_ALLOCATOR_H
18 #include "sanitizer_common/sanitizer_allocator.h"
19 #include "sanitizer_common/sanitizer_common.h"
20 #include "sanitizer_common/sanitizer_internal_defs.h"
21 #include "lsan_common.h"
25 void *Allocate(const StackTrace &stack, uptr size, uptr alignment,
27 void Deallocate(void *p);
28 void *Reallocate(const StackTrace &stack, void *p, uptr new_size,
30 uptr GetMallocUsableSize(const void *p);
32 template<typename Callable>
33 void ForEachChunk(const Callable &callback);
35 void GetAllocatorCacheRange(uptr *begin, uptr *end);
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 defined(__mips64) || defined(__aarch64__) || defined(__i386__) || \
55 static const uptr kRegionSizeLog = 20;
56 static const uptr kNumRegions = SANITIZER_MMAP_RANGE_SIZE >> kRegionSizeLog;
57 template <typename AddressSpaceView>
59 TwoLevelByteMap<(kNumRegions >> 12), 1 << 12, AddressSpaceView>;
61 template <typename AddressSpaceViewTy>
63 static const uptr kSpaceBeg = 0;
64 static const u64 kSpaceSize = SANITIZER_MMAP_RANGE_SIZE;
65 static const uptr kMetadataSize = sizeof(ChunkMetadata);
66 typedef __sanitizer::CompactSizeClassMap SizeClassMap;
67 static const uptr kRegionSizeLog = __lsan::kRegionSizeLog;
68 using AddressSpaceView = AddressSpaceViewTy;
69 using ByteMap = __lsan::ByteMapASVT<AddressSpaceView>;
70 typedef NoOpMapUnmapCallback MapUnmapCallback;
71 static const uptr kFlags = 0;
73 template <typename AddressSpaceView>
74 using PrimaryAllocatorASVT = SizeClassAllocator32<AP32<AddressSpaceView>>;
75 using PrimaryAllocator = PrimaryAllocatorASVT<LocalAddressSpaceView>;
76 #elif defined(__x86_64__) || defined(__powerpc64__)
77 # if defined(__powerpc64__)
78 const uptr kAllocatorSpace = 0xa0000000000ULL;
79 const uptr kAllocatorSize = 0x20000000000ULL; // 2T.
81 const uptr kAllocatorSpace = 0x600000000000ULL;
82 const uptr kAllocatorSize = 0x40000000000ULL; // 4T.
84 template <typename AddressSpaceViewTy>
85 struct AP64 { // Allocator64 parameters. Deliberately using a short name.
86 static const uptr kSpaceBeg = kAllocatorSpace;
87 static const uptr kSpaceSize = kAllocatorSize;
88 static const uptr kMetadataSize = sizeof(ChunkMetadata);
89 typedef DefaultSizeClassMap SizeClassMap;
90 typedef NoOpMapUnmapCallback MapUnmapCallback;
91 static const uptr kFlags = 0;
92 using AddressSpaceView = AddressSpaceViewTy;
95 template <typename AddressSpaceView>
96 using PrimaryAllocatorASVT = SizeClassAllocator64<AP64<AddressSpaceView>>;
97 using PrimaryAllocator = PrimaryAllocatorASVT<LocalAddressSpaceView>;
100 template <typename AddressSpaceView>
101 using AllocatorCacheASVT =
102 SizeClassAllocatorLocalCache<PrimaryAllocatorASVT<AddressSpaceView>>;
103 using AllocatorCache = AllocatorCacheASVT<LocalAddressSpaceView>;
105 template <typename AddressSpaceView>
106 using SecondaryAllocatorASVT =
107 LargeMmapAllocator<NoOpMapUnmapCallback, DefaultLargeMmapAllocatorPtrArray,
110 template <typename AddressSpaceView>
111 using AllocatorASVT =
112 CombinedAllocator<PrimaryAllocatorASVT<AddressSpaceView>,
113 AllocatorCacheASVT<AddressSpaceView>,
114 SecondaryAllocatorASVT<AddressSpaceView>>;
115 using Allocator = AllocatorASVT<LocalAddressSpaceView>;
117 AllocatorCache *GetAllocatorCache();
119 int lsan_posix_memalign(void **memptr, uptr alignment, uptr size,
120 const StackTrace &stack);
121 void *lsan_aligned_alloc(uptr alignment, uptr size, const StackTrace &stack);
122 void *lsan_memalign(uptr alignment, uptr size, const StackTrace &stack);
123 void *lsan_malloc(uptr size, const StackTrace &stack);
124 void lsan_free(void *p);
125 void *lsan_realloc(void *p, uptr size, const StackTrace &stack);
126 void *lsan_calloc(uptr nmemb, uptr size, const StackTrace &stack);
127 void *lsan_valloc(uptr size, const StackTrace &stack);
128 void *lsan_pvalloc(uptr size, const StackTrace &stack);
129 uptr lsan_mz_size(const void *p);
131 } // namespace __lsan
133 #endif // LSAN_ALLOCATOR_H