1 /*
2 * Copyright (C) 2011 Google 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'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25 #include "config.h"
26
27 #include "CCThread.h"
28
29 #include "LayerRendererChromium.h"
30 #include <wtf/CurrentTime.h>
31 #include <wtf/PassOwnPtr.h>
32 #include <wtf/ThreadingPrimitives.h>
33
34 namespace WebCore {
35
36 using namespace WTF;
37
CCThread()38 CCThread::CCThread()
39 {
40 MutexLocker lock(m_threadCreationMutex);
41 m_threadID = createThread(CCThread::compositorThreadStart, this, "Chromium Compositor");
42 }
43
~CCThread()44 CCThread::~CCThread()
45 {
46 m_queue.kill();
47
48 // Stop thread.
49 void* exitCode;
50 waitForThreadCompletion(m_threadID, &exitCode);
51 m_threadID = 0;
52 }
53
postTask(PassOwnPtr<Task> task)54 void CCThread::postTask(PassOwnPtr<Task> task)
55 {
56 m_queue.append(task);
57 }
58
compositorThreadStart(void * userdata)59 void* CCThread::compositorThreadStart(void* userdata)
60 {
61 CCThread* ccThread = static_cast<CCThread*>(userdata);
62 return ccThread->runLoop();
63 }
64
runLoop()65 void* CCThread::runLoop()
66 {
67 {
68 // Wait for CCThread::start() to complete to have m_threadID
69 // established before starting the main loop.
70 MutexLocker lock(m_threadCreationMutex);
71 }
72
73 while (OwnPtr<Task> task = m_queue.waitForMessage())
74 task->performTask();
75
76 return 0;
77 }
78
79 }
80