1/* 2 * Copyright (C) 2013, 2014 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "DFGDesiredWeakReferences.h" 28 29#if ENABLE(DFG_JIT) 30 31#include "CodeBlock.h" 32#include "DFGCommonData.h" 33#include "JSCInlines.h" 34 35namespace JSC { namespace DFG { 36 37DesiredWeakReferences::DesiredWeakReferences() 38 : m_codeBlock(nullptr) 39{ 40} 41 42DesiredWeakReferences::DesiredWeakReferences(CodeBlock* codeBlock) 43 : m_codeBlock(codeBlock) 44{ 45} 46 47DesiredWeakReferences::~DesiredWeakReferences() 48{ 49} 50 51void DesiredWeakReferences::addLazily(JSCell* cell) 52{ 53 m_references.append(cell); 54} 55 56void DesiredWeakReferences::reallyAdd(VM& vm, CommonData* common) 57{ 58 for (unsigned i = 0; i < m_references.size(); i++) { 59 JSCell* target = m_references[i]; 60 common->weakReferences.append(WriteBarrier<JSCell>(vm, m_codeBlock->ownerExecutable(), target)); 61 } 62} 63 64void DesiredWeakReferences::visitChildren(SlotVisitor& visitor) 65{ 66 for (unsigned i = m_references.size(); i--;) 67 visitor.appendUnbarrieredPointer(&m_references[i]); 68} 69 70} } // namespace JSC::DFG 71 72#endif // ENABLE(DFG_JIT) 73