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#include "config.h" 27#include "StructureStubClearingWatchpoint.h" 28 29#if ENABLE(JIT) 30 31#include "CodeBlock.h" 32#include "JSCInlines.h" 33#include "StructureStubInfo.h" 34 35namespace JSC { 36 37StructureStubClearingWatchpoint::~StructureStubClearingWatchpoint() { } 38 39StructureStubClearingWatchpoint* StructureStubClearingWatchpoint::push( 40 WatchpointsOnStructureStubInfo& holder, 41 OwnPtr<StructureStubClearingWatchpoint>& head) 42{ 43 head = adoptPtr(new StructureStubClearingWatchpoint(holder, head.release())); 44 return head.get(); 45} 46 47void StructureStubClearingWatchpoint::fireInternal() 48{ 49 // This will implicitly cause my own demise: stub reset removes all watchpoints. 50 // That works, because deleting a watchpoint removes it from the set's list, and 51 // the set's list traversal for firing is robust against the set changing. 52 m_holder.codeBlock()->resetStub(*m_holder.stubInfo()); 53} 54 55WatchpointsOnStructureStubInfo::~WatchpointsOnStructureStubInfo() 56{ 57} 58 59StructureStubClearingWatchpoint* WatchpointsOnStructureStubInfo::addWatchpoint() 60{ 61 return StructureStubClearingWatchpoint::push(*this, m_head); 62} 63 64StructureStubClearingWatchpoint* WatchpointsOnStructureStubInfo::ensureReferenceAndAddWatchpoint( 65 RefPtr<WatchpointsOnStructureStubInfo>& holderRef, CodeBlock* codeBlock, 66 StructureStubInfo* stubInfo) 67{ 68 if (!holderRef) 69 holderRef = adoptRef(new WatchpointsOnStructureStubInfo(codeBlock, stubInfo)); 70 else { 71 ASSERT(holderRef->m_codeBlock == codeBlock); 72 ASSERT(holderRef->m_stubInfo == stubInfo); 73 } 74 75 return holderRef->addWatchpoint(); 76} 77 78} // namespace JSC 79 80#endif // ENABLE(JIT) 81 82