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