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/*
* Copyright (C) 2013 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 "GCIncomingRefCountedSet.h"
#include "VM.h"
namespace JSC {
template<typename T>
GCIncomingRefCountedSet<T>::GCIncomingRefCountedSet()
: m_bytes(0)
{
}
template<typename T>
void GCIncomingRefCountedSet<T>::lastChanceToFinalize()
{
for (size_t i = m_vector.size(); i--;)
m_vector[i]->filterIncomingReferences([] (JSCell*) { return false; });
}
template<typename T>
bool GCIncomingRefCountedSet<T>::addReference(JSCell* cell, T* object)
{
if (!object->addIncomingReference(cell)) {
ASSERT(object->isDeferred());
ASSERT(object->numberOfIncomingReferences());
return false;
}
m_vector.append(object);
m_bytes += object->gcSizeEstimateInBytes();
ASSERT(object->isDeferred());
ASSERT(object->numberOfIncomingReferences());
return true;
}
template<typename T>
void GCIncomingRefCountedSet<T>::sweep(VM& vm, CollectionScope collectionScope)
{
size_t preciseBytes = 0;
m_vector.removeAllMatching([&](T* object) {
size_t size = object->gcSizeEstimateInBytes();
ASSERT(object->isDeferred());
ASSERT(object->numberOfIncomingReferences());
if (!object->filterIncomingReferences([&] (JSCell* cell) { return vm.heap.isMarked(cell); })) {
preciseBytes += size;
return false;
}
return true;
});
// Update m_bytes to the precise value when Full-GC happens since Eden-GC only expects that Eden region is collected.
if (collectionScope == CollectionScope::Full)
m_bytes = preciseBytes;
}
} // namespace JSC
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