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Viewing changes to Source/JavaScriptCore/bytecode/StructureStubClearingWatchpoint.cpp

  • Committer: Package Import Robot
  • Author(s): Jonathan Riddell
  • Date: 2013-02-18 14:24:18 UTC
  • Revision ID: package-import@ubuntu.com-20130218142418-eon0jmjg3nj438uy
Tags: upstream-2.3
Import upstream version 2.3

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Source/JavaScriptCore/bytecode/StructureStubClearingWatchpoint.cpp
 
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/*
 
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 * Copyright (C) 2012 Apple Inc. All rights reserved.
 
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 *
 
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 * Redistribution and use in source and binary forms, with or without
 
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 * modification, are permitted provided that the following conditions
 
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 * are met:
 
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 * 1. Redistributions of source code must retain the above copyright
 
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 *    notice, this list of conditions and the following disclaimer.
 
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 * 2. Redistributions in binary form must reproduce the above copyright
 
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 *    notice, this list of conditions and the following disclaimer in the
 
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 *    documentation and/or other materials provided with the distribution.
 
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 *
 
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 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 
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 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 
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 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 
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 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 
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 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 
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 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 
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 */
 
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#include "config.h"
 
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#include "StructureStubClearingWatchpoint.h"
 
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#if ENABLE(JIT)
 
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#include "CodeBlock.h"
 
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#include "StructureStubInfo.h"
 
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namespace JSC {
 
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StructureStubClearingWatchpoint::~StructureStubClearingWatchpoint() { }
 
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StructureStubClearingWatchpoint* StructureStubClearingWatchpoint::push(
 
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    WatchpointsOnStructureStubInfo& holder,
 
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    OwnPtr<StructureStubClearingWatchpoint>& head)
 
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{
 
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    head = adoptPtr(new StructureStubClearingWatchpoint(holder, head.release()));
 
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    return head.get();
 
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}
 
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void StructureStubClearingWatchpoint::fireInternal()
 
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{
 
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    // This will implicitly cause my own demise: stub reset removes all watchpoints.
 
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    // That works, because deleting a watchpoint removes it from the set's list, and
 
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    // the set's list traversal for firing is robust against the set changing.
 
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    m_holder.codeBlock()->resetStub(*m_holder.stubInfo());
 
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}
 
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WatchpointsOnStructureStubInfo::~WatchpointsOnStructureStubInfo()
 
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{
 
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}
 
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StructureStubClearingWatchpoint* WatchpointsOnStructureStubInfo::addWatchpoint()
 
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{
 
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    return StructureStubClearingWatchpoint::push(*this, m_head);
 
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}
 
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StructureStubClearingWatchpoint* WatchpointsOnStructureStubInfo::ensureReferenceAndAddWatchpoint(
 
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    RefPtr<WatchpointsOnStructureStubInfo>& holderRef, CodeBlock* codeBlock,
 
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    StructureStubInfo* stubInfo)
 
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{
 
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    if (!holderRef)
 
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        holderRef = adoptRef(new WatchpointsOnStructureStubInfo(codeBlock, stubInfo));
 
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    else {
 
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        ASSERT(holderRef->m_codeBlock == codeBlock);
 
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        ASSERT(holderRef->m_stubInfo == stubInfo);
 
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    }
 
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    return holderRef->addWatchpoint();
 
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}
 
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} // namespace JSC
 
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#endif // ENABLE(JIT)
 
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