1/* 2 * Copyright (C) 2012, 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 CopiedBlockInlines_h 27#define CopiedBlockInlines_h 28 29#include "ClassInfo.h" 30#include "CopiedBlock.h" 31#include "Heap.h" 32#include "MarkedBlock.h" 33 34namespace JSC { 35 36inline bool CopiedBlock::shouldReportLiveBytes(SpinLockHolder&, JSCell* owner) 37{ 38 // We want to add to live bytes if the owner isn't part of the remembered set or 39 // if this block was allocated during the last cycle. 40 // If we always added live bytes we would double count for elements in the remembered 41 // set across collections. 42 // If we didn't always add live bytes to new blocks, we'd get too few. 43 return !Heap::isRemembered(owner) || !m_isOld; 44} 45 46inline void CopiedBlock::reportLiveBytes(SpinLockHolder&, JSCell* owner, CopyToken token, unsigned bytes) 47{ 48 checkConsistency(); 49#ifndef NDEBUG 50 m_liveObjects++; 51#endif 52 m_liveBytes += bytes; 53 checkConsistency(); 54 ASSERT(m_liveBytes <= CopiedBlock::blockSize); 55 56 if (isPinned()) 57 return; 58 59 if (!shouldEvacuate()) { 60 pin(); 61 return; 62 } 63 64 if (!m_workList) 65 m_workList = adoptPtr(new CopyWorkList(Heap::heap(owner)->blockAllocator())); 66 67 m_workList->append(CopyWorklistItem(owner, token)); 68} 69 70inline void CopiedBlock::reportLiveBytesDuringCopying(unsigned bytes) 71{ 72 checkConsistency(); 73 // This doesn't need to be locked because the thread that calls this function owns the current block. 74 m_isOld = true; 75#ifndef NDEBUG 76 m_liveObjects++; 77#endif 78 m_liveBytes += bytes; 79 checkConsistency(); 80 ASSERT(m_liveBytes <= CopiedBlock::blockSize); 81} 82 83} // namespace JSC 84 85#endif // CopiedBlockInlines_h 86