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/*
* Copyright (C) 2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <wtf/ExportMacros.h>
#include <wtf/Platform.h>
#if ENABLE(MALLOC_HEAP_BREAKDOWN)
#include <mutex>
#if OS(DARWIN)
#include <malloc/malloc.h>
#endif
#endif
namespace WTF {
#define DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER(Type) DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER_AND_EXPORT(Type, WTF_EXPORT_PRIVATE)
#define DECLARE_COMPACT_ALLOCATOR_WITH_HEAP_IDENTIFIER(Type) DECLARE_COMPACT_ALLOCATOR_WITH_HEAP_IDENTIFIER_AND_EXPORT(Type, WTF_EXPORT_PRIVATE)
#if ENABLE(MALLOC_HEAP_BREAKDOWN)
class DebugHeap {
public:
WTF_EXPORT_PRIVATE DebugHeap(const char* heapName);
WTF_EXPORT_PRIVATE void* malloc(size_t);
WTF_EXPORT_PRIVATE void* calloc(size_t numElements, size_t elementSize);
WTF_EXPORT_PRIVATE void* memalign(size_t alignment, size_t, bool crashOnFailure);
WTF_EXPORT_PRIVATE void* realloc(void*, size_t);
WTF_EXPORT_PRIVATE void free(void*);
private:
#if OS(DARWIN)
malloc_zone_t* m_zone;
#endif
};
#define DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER_AND_EXPORT(Type, Export) \
struct Type##Malloc { \
static Export WTF::DebugHeap& debugHeap(); \
\
static void* malloc(size_t size) { return debugHeap().malloc(size); } \
\
static void* tryMalloc(size_t size) { return debugHeap().malloc(size); } \
\
static void* zeroedMalloc(size_t size) { return debugHeap().calloc(1, size); } \
\
static void* tryZeroedMalloc(size_t size) { return debugHeap().calloc(1, size); } \
\
static void* realloc(void* p, size_t size) { return debugHeap().realloc(p, size); } \
\
static void* tryRealloc(void* p, size_t size) { return debugHeap().realloc(p, size); } \
\
static void free(void* p) { debugHeap().free(p); } \
\
static constexpr ALWAYS_INLINE size_t nextCapacity(size_t capacity) { return capacity + capacity / 4 + 1; } \
}
#define DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(Type) \
WTF::DebugHeap& Type##Malloc::debugHeap() \
{ \
static LazyNeverDestroyed<WTF::DebugHeap> heap; \
static std::once_flag onceKey; \
std::call_once(onceKey, [&] { \
heap.construct(#Type); \
}); \
return heap; \
} \
struct MakeDebugHeapMallocedImplMacroSemicolonifier##Type { }
#define DECLARE_COMPACT_ALLOCATOR_WITH_HEAP_IDENTIFIER_AND_EXPORT(Type, Export) \
DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER_AND_EXPORT(Type, Export)
#define DEFINE_COMPACT_ALLOCATOR_WITH_HEAP_IDENTIFIER(Type) \
DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(Type)
#else // ENABLE(MALLOC_HEAP_BREAKDOWN)
#define DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER_AND_EXPORT(Type, Export) \
using Type##Malloc = FastMalloc
#define DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(Type) \
struct MakeDebugHeapMallocedImplMacroSemicolonifier##Type { }
#define DECLARE_COMPACT_ALLOCATOR_WITH_HEAP_IDENTIFIER_AND_EXPORT(Type, Export) \
using Type##Malloc = FastCompactMalloc
#define DEFINE_COMPACT_ALLOCATOR_WITH_HEAP_IDENTIFIER(Type) \
struct MakeDebugHeapMallocedImplMacroSemicolonifier##Type { }
#endif
} // namespace WTF
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