76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/*
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* Copyright (C) 2009-2019 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 "Heap.h"
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namespace JSC {
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class CodeBlockSet;
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class HeapCell;
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class JITStubRoutineSet;
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class ConservativeRoots {
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public:
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ConservativeRoots(Heap&);
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~ConservativeRoots();
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void add(void* begin, void* end);
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void add(void* begin, void* end, JITStubRoutineSet&, CodeBlockSet&);
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size_t size() const;
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HeapCell** roots() const;
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private:
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static constexpr size_t inlineCapacity = 2048;
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template<typename MarkHook>
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void genericAddPointer(void*, HeapVersion markingVersion, HeapVersion newlyAllocatedVersion, TinyBloomFilter, MarkHook&);
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template<typename MarkHook>
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void genericAddSpan(void*, void* end, MarkHook&);
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void grow();
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HeapCell** m_roots;
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size_t m_size;
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size_t m_capacity;
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Heap& m_heap;
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HeapCell* m_inlineRoots[inlineCapacity];
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};
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inline size_t ConservativeRoots::size() const
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{
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return m_size;
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}
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inline HeapCell** ConservativeRoots::roots() const
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{
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return m_roots;
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}
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} // namespace JSC
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