/* * Copyright (C) 2012-2017 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #include "JSRunLoopTimer.h" namespace JSC { class Heap; class BlockDirectory; class IncrementalSweeper : public JSRunLoopTimer { public: using Base = JSRunLoopTimer; JS_EXPORT_PRIVATE explicit IncrementalSweeper(Heap*); JS_EXPORT_PRIVATE void startSweeping(); void freeFastMallocMemoryAfterSweeping() { m_shouldFreeFastMallocMemoryAfterSweeping = true; } JS_EXPORT_PRIVATE void doWork() override; bool sweepNextBlock(); JS_EXPORT_PRIVATE void stopSweeping(); private: void doSweep(MonotonicTime startTime); void scheduleTimer(); BlockDirectory* m_currentDirectory; bool m_shouldFreeFastMallocMemoryAfterSweeping { false }; }; } // namespace JSC