1/* 2 * Copyright (C) 2010 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 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include "config.h" 30#include "GCActivityCallback.h" 31 32#include "APIShims.h" 33#include "Heap.h" 34#include "JSGlobalData.h" 35#include "JSLock.h" 36#include "JSObject.h" 37#include "ScopeChain.h" 38#include <wtf/RetainPtr.h> 39#include <wtf/WTFThreadData.h> 40 41#if !USE(CF) 42#error "This file should only be used on CF platforms." 43#endif 44 45namespace JSC { 46 47struct DefaultGCActivityCallbackPlatformData { 48 static void trigger(CFRunLoopTimerRef, void *info); 49 50 RetainPtr<CFRunLoopTimerRef> timer; 51 RetainPtr<CFRunLoopRef> runLoop; 52 CFRunLoopTimerContext context; 53}; 54 55const CFTimeInterval decade = 60 * 60 * 24 * 365 * 10; 56const CFTimeInterval triggerInterval = 2; // seconds 57 58void DefaultGCActivityCallbackPlatformData::trigger(CFRunLoopTimerRef timer, void *info) 59{ 60 Heap* heap = static_cast<Heap*>(info); 61 APIEntryShim shim(heap->globalData()); 62 heap->collectAllGarbage(); 63 CFRunLoopTimerSetNextFireDate(timer, CFAbsoluteTimeGetCurrent() + decade); 64} 65 66DefaultGCActivityCallback::DefaultGCActivityCallback(Heap* heap) 67{ 68 commonConstructor(heap, CFRunLoopGetCurrent()); 69} 70 71DefaultGCActivityCallback::DefaultGCActivityCallback(Heap* heap, CFRunLoopRef runLoop) 72{ 73 commonConstructor(heap, runLoop); 74} 75 76DefaultGCActivityCallback::~DefaultGCActivityCallback() 77{ 78 CFRunLoopRemoveTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes); 79 CFRunLoopTimerInvalidate(d->timer.get()); 80 d->context.info = 0; 81 d->runLoop = 0; 82 d->timer = 0; 83} 84 85void DefaultGCActivityCallback::commonConstructor(Heap* heap, CFRunLoopRef runLoop) 86{ 87 d = adoptPtr(new DefaultGCActivityCallbackPlatformData); 88 89 memset(&d->context, 0, sizeof(CFRunLoopTimerContext)); 90 d->context.info = heap; 91 d->runLoop = runLoop; 92 d->timer.adoptCF(CFRunLoopTimerCreate(0, decade, decade, 0, 0, DefaultGCActivityCallbackPlatformData::trigger, &d->context)); 93 CFRunLoopAddTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes); 94} 95 96void DefaultGCActivityCallback::operator()() 97{ 98 CFRunLoopTimerSetNextFireDate(d->timer.get(), CFAbsoluteTimeGetCurrent() + triggerInterval); 99} 100 101void DefaultGCActivityCallback::synchronize() 102{ 103 if (CFRunLoopGetCurrent() == d->runLoop.get()) 104 return; 105 CFRunLoopRemoveTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes); 106 d->runLoop = CFRunLoopGetCurrent(); 107 CFRunLoopAddTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes); 108} 109 110} 111