Retro68/gcc/libsanitizer/sanitizer_common/sanitizer_allocator_internal.h
2017-04-10 13:32:00 +02:00

62 lines
2.1 KiB
C++

//===-- sanitizer_allocator_internal.h --------------------------*- C++ -*-===//
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This allocator is used inside run-times.
//
//===----------------------------------------------------------------------===//
#ifndef SANITIZER_ALLOCATOR_INTERNAL_H
#define SANITIZER_ALLOCATOR_INTERNAL_H
#include "sanitizer_allocator.h"
#include "sanitizer_internal_defs.h"
namespace __sanitizer {
// FIXME: Check if we may use even more compact size class map for internal
// purposes.
typedef CompactSizeClassMap InternalSizeClassMap;
static const uptr kInternalAllocatorSpace = 0;
static const u64 kInternalAllocatorSize = SANITIZER_MMAP_RANGE_SIZE;
static const uptr kInternalAllocatorRegionSizeLog = 20;
#if SANITIZER_WORDSIZE == 32
static const uptr kInternalAllocatorNumRegions =
kInternalAllocatorSize >> kInternalAllocatorRegionSizeLog;
typedef FlatByteMap<kInternalAllocatorNumRegions> ByteMap;
#else
static const uptr kInternalAllocatorNumRegions =
kInternalAllocatorSize >> kInternalAllocatorRegionSizeLog;
typedef TwoLevelByteMap<(kInternalAllocatorNumRegions >> 12), 1 << 12> ByteMap;
#endif
typedef SizeClassAllocator32<
kInternalAllocatorSpace, kInternalAllocatorSize, 0, InternalSizeClassMap,
kInternalAllocatorRegionSizeLog, ByteMap> PrimaryInternalAllocator;
typedef SizeClassAllocatorLocalCache<PrimaryInternalAllocator>
InternalAllocatorCache;
typedef CombinedAllocator<PrimaryInternalAllocator, InternalAllocatorCache,
LargeMmapAllocator<> > InternalAllocator;
void *InternalAlloc(uptr size, InternalAllocatorCache *cache = nullptr);
void InternalFree(void *p, InternalAllocatorCache *cache = nullptr);
InternalAllocator *internal_allocator();
enum InternalAllocEnum {
INTERNAL_ALLOC
};
} // namespace __sanitizer
inline void *operator new(__sanitizer::operator_new_size_type size,
InternalAllocEnum) {
return InternalAlloc(size);
}
#endif // SANITIZER_ALLOCATOR_INTERNAL_H