forked from OSchip/llvm-project
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
//===-- sanitizer_allocator_internal.h -------------------------- C++ -----===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// 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;
|
|
#if SANITIZER_WORDSIZE == 32
|
|
static const u64 kInternalAllocatorSize = (1ULL << 32);
|
|
static const uptr kInternalAllocatorRegionSizeLog = 20;
|
|
#else
|
|
static const u64 kInternalAllocatorSize = (1ULL << 47);
|
|
static const uptr kInternalAllocatorRegionSizeLog = 24;
|
|
#endif
|
|
static const uptr kInternalAllocatorFlatByteMapSize =
|
|
kInternalAllocatorSize >> kInternalAllocatorRegionSizeLog;
|
|
typedef SizeClassAllocator32<
|
|
kInternalAllocatorSpace, kInternalAllocatorSize, 16, InternalSizeClassMap,
|
|
kInternalAllocatorRegionSizeLog,
|
|
FlatByteMap<kInternalAllocatorFlatByteMapSize> > PrimaryInternalAllocator;
|
|
|
|
typedef SizeClassAllocatorLocalCache<PrimaryInternalAllocator>
|
|
InternalAllocatorCache;
|
|
|
|
// We don't want our internal allocator to do any map/unmap operations.
|
|
struct CrashOnMapUnmap {
|
|
void OnMap(uptr p, uptr size) const {
|
|
RAW_CHECK_MSG(0, "Unexpected mmap in InternalAllocator!");
|
|
}
|
|
void OnUnmap(uptr p, uptr size) const {
|
|
RAW_CHECK_MSG(0, "Unexpected munmap in InternalAllocator!");
|
|
}
|
|
};
|
|
|
|
typedef CombinedAllocator<PrimaryInternalAllocator, InternalAllocatorCache,
|
|
LargeMmapAllocator<CrashOnMapUnmap> >
|
|
InternalAllocator;
|
|
|
|
void *InternalAlloc(uptr size, InternalAllocatorCache *cache = 0);
|
|
void InternalFree(void *p, InternalAllocatorCache *cache = 0);
|
|
InternalAllocator *internal_allocator();
|
|
|
|
} // namespace __sanitizer
|
|
|
|
#endif // SANITIZER_ALLOCATOR_INTERNAL_H
|