mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
/*
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* Copyright (C) 2013 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 "GCIncomingRefCountedSet.h"
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#include "VM.h"
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namespace JSC {
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template<typename T>
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GCIncomingRefCountedSet<T>::GCIncomingRefCountedSet()
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: m_bytes(0)
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{
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}
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template<typename T>
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void GCIncomingRefCountedSet<T>::lastChanceToFinalize()
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{
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for (size_t i = m_vector.size(); i--;)
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m_vector[i]->filterIncomingReferences([] (JSCell*) { return false; });
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}
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template<typename T>
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bool GCIncomingRefCountedSet<T>::addReference(JSCell* cell, T* object)
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{
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if (!object->addIncomingReference(cell)) {
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ASSERT(object->isDeferred());
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ASSERT(object->numberOfIncomingReferences());
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return false;
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}
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m_vector.append(object);
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m_bytes += object->gcSizeEstimateInBytes();
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ASSERT(object->isDeferred());
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ASSERT(object->numberOfIncomingReferences());
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return true;
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}
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template<typename T>
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void GCIncomingRefCountedSet<T>::sweep(VM& vm)
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{
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for (size_t i = 0; i < m_vector.size(); ++i) {
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T* object = m_vector[i];
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size_t size = object->gcSizeEstimateInBytes();
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ASSERT(object->isDeferred());
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ASSERT(object->numberOfIncomingReferences());
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if (!object->filterIncomingReferences([&] (JSCell* cell) { return vm.heap.isMarked(cell); }))
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continue;
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m_bytes -= size;
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m_vector[i--] = m_vector.last();
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m_vector.removeLast();
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}
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}
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} // namespace JSC
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