1 //===-- sanitizer_allocator_internal.h --------------------------*- C++ -*-===//
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 allocator is used inside run-times.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef SANITIZER_ALLOCATOR_INTERNAL_H
14 #define SANITIZER_ALLOCATOR_INTERNAL_H
15 
16 #include "sanitizer_allocator.h"
17 #include "sanitizer_internal_defs.h"
18 
19 namespace __sanitizer {
20 
21 // FIXME: Check if we may use even more compact size class map for internal
22 // purposes.
23 typedef CompactSizeClassMap InternalSizeClassMap;
24 
25 struct AP32 {
26   static const uptr kSpaceBeg = 0;
27   static const u64 kSpaceSize = SANITIZER_MMAP_RANGE_SIZE;
28   static const uptr kMetadataSize = 0;
29   typedef InternalSizeClassMap SizeClassMap;
30   static const uptr kRegionSizeLog = 20;
31   using AddressSpaceView = LocalAddressSpaceView;
32   typedef NoOpMapUnmapCallback MapUnmapCallback;
33   static const uptr kFlags = 0;
34 };
35 typedef SizeClassAllocator32<AP32> PrimaryInternalAllocator;
36 
37 typedef CombinedAllocator<PrimaryInternalAllocator,
38                           LargeMmapAllocatorPtrArrayStatic>
39     InternalAllocator;
40 typedef InternalAllocator::AllocatorCache InternalAllocatorCache;
41 
42 void *InternalAlloc(uptr size, InternalAllocatorCache *cache = nullptr,
43                     uptr alignment = 0);
44 void *InternalRealloc(void *p, uptr size,
45                       InternalAllocatorCache *cache = nullptr);
46 void *InternalReallocArray(void *p, uptr count, uptr size,
47                            InternalAllocatorCache *cache = nullptr);
48 void *InternalCalloc(uptr count, uptr size,
49                      InternalAllocatorCache *cache = nullptr);
50 void InternalFree(void *p, InternalAllocatorCache *cache = nullptr);
51 void InternalAllocatorLock();
52 void InternalAllocatorUnlock();
53 InternalAllocator *internal_allocator();
54 
55 } // namespace __sanitizer
56 
57 #endif // SANITIZER_ALLOCATOR_INTERNAL_H
58