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. 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 "CopyVisitor.h" 28 29#include "CopiedSpaceInlines.h" 30#include "CopyVisitorInlines.h" 31#include "CopyWorkList.h" 32#include "GCThreadSharedData.h" 33#include "JSCell.h" 34#include "JSObject.h" 35#include "JSCInlines.h" 36#include <wtf/Threading.h> 37 38namespace JSC { 39 40CopyVisitor::CopyVisitor(GCThreadSharedData& shared) 41 : m_shared(shared) 42{ 43} 44 45void CopyVisitor::copyFromShared() 46{ 47 size_t next, end; 48 m_shared.getNextBlocksToCopy(next, end); 49 while (next < end) { 50 for (; next < end; ++next) { 51 CopiedBlock* block = m_shared.m_blocksToCopy[next]; 52 if (!block->hasWorkList()) 53 continue; 54 55 CopyWorkList& workList = block->workList(); 56 for (CopyWorkList::iterator it = workList.begin(); it != workList.end(); ++it) 57 visitItem(*it); 58 59 ASSERT(!block->liveBytes()); 60 m_shared.m_copiedSpace->recycleEvacuatedBlock(block, m_shared.m_vm->heap.operationInProgress()); 61 } 62 m_shared.getNextBlocksToCopy(next, end); 63 } 64 ASSERT(next == end); 65} 66 67} // namespace JSC 68