2 * Copyright (C) 2010 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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.
30 #include "GCActivityCallback.h"
34 #include "JSGlobalData.h"
36 #include <wtf/RetainPtr.h>
37 #include <wtf/WTFThreadData.h>
40 #error "This file should only be used on CF platforms."
45 struct DefaultGCActivityCallbackPlatformData {
46 static void trigger(CFRunLoopTimerRef, void *info);
48 RetainPtr<CFRunLoopTimerRef> timer;
49 RetainPtr<CFRunLoopRef> runLoop;
50 CFRunLoopTimerContext context;
53 const CFTimeInterval decade = 60 * 60 * 24 * 365 * 10;
54 const CFTimeInterval triggerInterval = 2; // seconds
56 void DefaultGCActivityCallbackPlatformData::trigger(CFRunLoopTimerRef timer, void *info)
58 Heap* heap = static_cast<Heap*>(info);
59 APIEntryShim shim(heap->globalData());
60 heap->collectAllGarbage();
61 CFRunLoopTimerSetNextFireDate(timer, CFAbsoluteTimeGetCurrent() + decade);
64 DefaultGCActivityCallback::DefaultGCActivityCallback(Heap* heap)
66 commonConstructor(heap, CFRunLoopGetCurrent());
69 DefaultGCActivityCallback::DefaultGCActivityCallback(Heap* heap, CFRunLoopRef runLoop)
71 commonConstructor(heap, runLoop);
74 DefaultGCActivityCallback::~DefaultGCActivityCallback()
76 CFRunLoopRemoveTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes);
77 CFRunLoopTimerInvalidate(d->timer.get());
83 void DefaultGCActivityCallback::commonConstructor(Heap* heap, CFRunLoopRef runLoop)
85 d = adoptPtr(new DefaultGCActivityCallbackPlatformData);
87 memset(&d->context, 0, sizeof(CFRunLoopTimerContext));
88 d->context.info = heap;
90 d->timer.adoptCF(CFRunLoopTimerCreate(0, decade, decade, 0, 0, DefaultGCActivityCallbackPlatformData::trigger, &d->context));
91 CFRunLoopAddTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes);
94 void DefaultGCActivityCallback::operator()()
96 CFRunLoopTimerSetNextFireDate(d->timer.get(), CFAbsoluteTimeGetCurrent() + triggerInterval);
99 void DefaultGCActivityCallback::synchronize()
101 if (CFRunLoopGetCurrent() == d->runLoop.get())
103 CFRunLoopRemoveTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes);
104 d->runLoop = CFRunLoopGetCurrent();
105 CFRunLoopAddTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes);