1/* 2 * Copyright (C) 2012 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. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef StructureStubClearingWatchpoint_h 27#define StructureStubClearingWatchpoint_h 28 29#include "Watchpoint.h" 30#include <wtf/Platform.h> 31 32#if ENABLE(JIT) 33 34#include <wtf/FastAllocBase.h> 35#include <wtf/Noncopyable.h> 36#include <wtf/OwnPtr.h> 37#include <wtf/PassOwnPtr.h> 38#include <wtf/RefCounted.h> 39#include <wtf/RefPtr.h> 40 41namespace JSC { 42 43class CodeBlock; 44class WatchpointsOnStructureStubInfo; 45struct StructureStubInfo; 46 47class StructureStubClearingWatchpoint : public Watchpoint { 48 WTF_MAKE_NONCOPYABLE(StructureStubClearingWatchpoint); 49 WTF_MAKE_FAST_ALLOCATED; 50public: 51 StructureStubClearingWatchpoint( 52 WatchpointsOnStructureStubInfo& holder) 53 : m_holder(holder) 54 { 55 } 56 57 StructureStubClearingWatchpoint( 58 WatchpointsOnStructureStubInfo& holder, 59 PassOwnPtr<StructureStubClearingWatchpoint> next) 60 : m_holder(holder) 61 , m_next(next) 62 { 63 } 64 65 virtual ~StructureStubClearingWatchpoint(); 66 67 static StructureStubClearingWatchpoint* push( 68 WatchpointsOnStructureStubInfo& holder, 69 OwnPtr<StructureStubClearingWatchpoint>& head); 70 71protected: 72 void fireInternal(); 73 74private: 75 WatchpointsOnStructureStubInfo& m_holder; 76 OwnPtr<StructureStubClearingWatchpoint> m_next; 77}; 78 79class WatchpointsOnStructureStubInfo : public RefCounted<WatchpointsOnStructureStubInfo> { 80public: 81 WatchpointsOnStructureStubInfo(CodeBlock* codeBlock, StructureStubInfo* stubInfo) 82 : m_codeBlock(codeBlock) 83 , m_stubInfo(stubInfo) 84 { 85 } 86 87 ~WatchpointsOnStructureStubInfo(); 88 89 StructureStubClearingWatchpoint* addWatchpoint(); 90 91 static StructureStubClearingWatchpoint* ensureReferenceAndAddWatchpoint( 92 RefPtr<WatchpointsOnStructureStubInfo>& holderRef, 93 CodeBlock*, StructureStubInfo*); 94 95 CodeBlock* codeBlock() const { return m_codeBlock; } 96 StructureStubInfo* stubInfo() const { return m_stubInfo; } 97 98private: 99 CodeBlock* m_codeBlock; 100 StructureStubInfo* m_stubInfo; 101 OwnPtr<StructureStubClearingWatchpoint> m_head; 102}; 103 104} // namespace JSC 105 106#endif // ENABLE(JIT) 107 108#endif // StructureStubClearingWatchpoint_h 109 110