mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-23 04:09:40 +00:00
66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
/*
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* Copyright (C) 2017 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 "AlignedMemoryAllocator.h"
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#include <wtf/DebugHeap.h>
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#include <wtf/FastBitVector.h>
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#include <wtf/HashMap.h>
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#include <wtf/Vector.h>
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namespace JSC {
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class IsoAlignedMemoryAllocator final : public AlignedMemoryAllocator {
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public:
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IsoAlignedMemoryAllocator(CString);
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~IsoAlignedMemoryAllocator() final;
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void* tryAllocateAlignedMemory(size_t alignment, size_t size) final;
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void freeAlignedMemory(void*) final;
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void dump(PrintStream&) const final;
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void* tryAllocateMemory(size_t) final;
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void freeMemory(void*) final;
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void* tryReallocateMemory(void*, size_t) final;
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private:
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#if ENABLE(MALLOC_HEAP_BREAKDOWN)
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// If breakdown is enabled, we do not ensure Iso-feature. This is totally OK since breakdown is memory bloat debugging feature.
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WTF::DebugHeap m_debugHeap;
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#else
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Vector<void*> m_blocks;
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HashMap<void*, unsigned> m_blockIndices;
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FastBitVector m_committed;
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unsigned m_firstUncommitted { 0 };
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Lock m_lock;
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#endif
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};
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} // namespace JSC
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