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 IncrementalSweeper_h 27#define IncrementalSweeper_h 28 29#include "HeapTimer.h" 30#include <wtf/PassOwnPtr.h> 31#include <wtf/Vector.h> 32 33namespace JSC { 34 35class Heap; 36class MarkedBlock; 37 38class IncrementalSweeper : public HeapTimer { 39public: 40 static PassOwnPtr<IncrementalSweeper> create(Heap*); 41 void startSweeping(Vector<MarkedBlock*>&); 42 JS_EXPORT_PRIVATE virtual void doWork() override; 43 void sweepNextBlock(); 44 void willFinishSweeping(); 45 46protected: 47#if USE(CF) 48 JS_EXPORT_PRIVATE IncrementalSweeper(Heap*, CFRunLoopRef); 49#else 50 IncrementalSweeper(VM*); 51#endif 52 53#if USE(CF) 54private: 55 void doSweep(double startTime); 56 void scheduleTimer(); 57 void cancelTimer(); 58 59 unsigned m_currentBlockToSweepIndex; 60 Vector<MarkedBlock*>& m_blocksToSweep; 61#endif 62}; 63 64} // namespace JSC 65 66#endif 67