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 * 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. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "RunLoop.h"
28
29 #include "WorkItem.h"
30 #include <wtf/StdLibExtras.h>
31
32 static RunLoop* s_mainRunLoop;
33
initializeMainRunLoop()34 void RunLoop::initializeMainRunLoop()
35 {
36 if (s_mainRunLoop)
37 return;
38 s_mainRunLoop = RunLoop::current();
39 }
40
current()41 RunLoop* RunLoop::current()
42 {
43 DEFINE_STATIC_LOCAL(WTF::ThreadSpecific<RunLoop>, runLoopData, ());
44 return &*runLoopData;
45 }
46
main()47 RunLoop* RunLoop::main()
48 {
49 ASSERT(s_mainRunLoop);
50 return s_mainRunLoop;
51 }
52
performWork()53 void RunLoop::performWork()
54 {
55 Vector<WorkItem*> workItemQueue;
56 {
57 MutexLocker locker(m_workItemQueueLock);
58 m_workItemQueue.swap(workItemQueue);
59 }
60
61 for (size_t i = 0; i < workItemQueue.size(); ++i) {
62 OwnPtr<WorkItem> item(workItemQueue[i]);
63 item->execute();
64 }
65 }
66
scheduleWork(PassOwnPtr<WorkItem> item)67 void RunLoop::scheduleWork(PassOwnPtr<WorkItem> item)
68 {
69 MutexLocker locker(m_workItemQueueLock);
70 m_workItemQueue.append(item.leakPtr());
71
72 wakeUp();
73 }
74