1/* 2 * Copyright (C) 2013 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#ifndef DelayedReleaseScope_h 27#define DelayedReleaseScope_h 28 29#include "Heap.h" 30#include "JSLock.h" 31#include "MarkedSpace.h" 32 33namespace JSC { 34 35#if USE(CF) 36 37class DelayedReleaseScope { 38public: 39 DelayedReleaseScope(MarkedSpace& markedSpace) 40 : m_markedSpace(markedSpace) 41 { 42 ASSERT(!m_markedSpace.m_currentDelayedReleaseScope); 43 m_markedSpace.m_currentDelayedReleaseScope = this; 44 } 45 46 ~DelayedReleaseScope() 47 { 48 ASSERT(m_markedSpace.m_currentDelayedReleaseScope == this); 49 m_markedSpace.m_currentDelayedReleaseScope = nullptr; 50 51 HeapOperation operationInProgress = NoOperation; 52 std::swap(operationInProgress, m_markedSpace.m_heap->m_operationInProgress); 53 54 { 55 JSLock::DropAllLocks dropAllLocks(*m_markedSpace.m_heap->vm()); 56 m_delayedReleaseObjects.clear(); 57 } 58 59 std::swap(operationInProgress, m_markedSpace.m_heap->m_operationInProgress); 60 } 61 62 template <typename T> 63 void releaseSoon(RetainPtr<T>&& object) 64 { 65 m_delayedReleaseObjects.append(WTF::move(object)); 66 } 67 68 static bool isInEffectFor(MarkedSpace& markedSpace) 69 { 70 return markedSpace.m_currentDelayedReleaseScope; 71 } 72 73private: 74 MarkedSpace& m_markedSpace; 75 Vector<RetainPtr<CFTypeRef>> m_delayedReleaseObjects; 76}; 77 78template <typename T> 79inline void MarkedSpace::releaseSoon(RetainPtr<T>&& object) 80{ 81 ASSERT(m_currentDelayedReleaseScope); 82 m_currentDelayedReleaseScope->releaseSoon(WTF::move(object)); 83} 84 85#else // USE(CF) 86 87class DelayedReleaseScope { 88public: 89 DelayedReleaseScope(MarkedSpace&) 90 { 91 } 92 93 static bool isInEffectFor(MarkedSpace&) 94 { 95 return true; 96 } 97}; 98 99#endif // USE(CF) 100 101} // namespace JSC 102 103#endif // DelayedReleaseScope_h 104