/* * Copyright (C) 2007 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 COMPUTER, 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 COMPUTER, 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. */ #include "config.h" #include "GCController.h" #include "JSDOMWindow.h" #include <runtime/JSGlobalData.h> #include <runtime/JSLock.h> #include <heap/Heap.h> #include <wtf/StdLibExtras.h> using namespace JSC; namespace WebCore { static void collect(void*) { JSLockHolder lock(JSDOMWindow::commonJSGlobalData()); JSDOMWindow::commonJSGlobalData()->heap.collectAllGarbage(); } GCController& gcController() { DEFINE_STATIC_LOCAL(GCController, staticGCController, ()); return staticGCController; } GCController::GCController() #if !USE(CF) : m_GCTimer(this, &GCController::gcTimerFired) #endif { } void GCController::garbageCollectSoon() { // We only use reportAbandonedObjectGraph on systems with CoreFoundation // since it uses a runloop-based timer that is currently only available on // systems with CoreFoundation. If and when the notion of a run loop is pushed // down into WTF so that more platforms can take advantage of it, we will be // able to use reportAbandonedObjectGraph on more platforms. #if USE(CF) JSLockHolder lock(JSDOMWindow::commonJSGlobalData()); JSDOMWindow::commonJSGlobalData()->heap.reportAbandonedObjectGraph(); #else if (!m_GCTimer.isActive()) m_GCTimer.startOneShot(0); #endif } #if !USE(CF) void GCController::gcTimerFired(Timer<GCController>*) { collect(0); } #endif void GCController::garbageCollectNow() { JSLockHolder lock(JSDOMWindow::commonJSGlobalData()); if (!JSDOMWindow::commonJSGlobalData()->heap.isBusy()) JSDOMWindow::commonJSGlobalData()->heap.collectAllGarbage(); } void GCController::garbageCollectOnAlternateThreadForDebugging(bool waitUntilDone) { ThreadIdentifier threadID = createThread(collect, 0, "WebCore: GCController"); if (waitUntilDone) { waitForThreadCompletion(threadID); return; } detachThread(threadID); } void GCController::discardAllCompiledCode() { JSLockHolder lock(JSDOMWindow::commonJSGlobalData()); JSDOMWindow::commonJSGlobalData()->heap.discardAllCompiledCode(); } } // namespace WebCore