1/*
2 * Copyright (C) 2013 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 are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32
33#if ENABLE(THREADED_HTML_PARSER)
34
35#include "HTMLParserThread.h"
36
37namespace WebCore {
38
39HTMLParserThread::HTMLParserThread()
40 : m_threadID(0)
41{
42}
43
44HTMLParserThread::~HTMLParserThread()
45{
46 ASSERT(m_queue.killed());
47}
48
49bool HTMLParserThread::start()
50{
51 MutexLocker lock(m_threadCreationMutex);
52 if (m_threadID)
53 return true;
54 m_threadID = createThread(HTMLParserThread::threadStart, this, "WebCore: HTMLParser");
55 return m_threadID;
56}
57
58void HTMLParserThread::stop()
59{
60 m_queue.kill();
61 waitForThreadCompletion(m_threadID);
62}
63
64HTMLParserThread* HTMLParserThread::shared()
65{
66 static HTMLParserThread* thread;
67 if (!thread) {
68 thread = HTMLParserThread::create().leakPtr();
69 thread->start();
70 }
71 return thread;
72}
73
74void HTMLParserThread::postTask(const Closure& function)
75{
76 m_queue.append(adoptPtr(new Closure(function)));
77}
78
79void HTMLParserThread::threadStart(void* arg)
80{
81 HTMLParserThread* thread = static_cast<HTMLParserThread*>(arg);
82 thread->runLoop();
83}
84
85void HTMLParserThread::runLoop()
86{
87 {
88 // Wait for HTMLParserThread::start() to complete to have m_threadID
89 // established before starting the main loop.
90 MutexLocker lock(m_threadCreationMutex);
91 }
92 while (OwnPtr<Closure> function = m_queue.waitForMessage())
93 (*function)();
94
95 // stop() will wait to join the thread, so we do not detach here.
96}
97
98} // namespace WebCore
99
100#endif // ENABLE(BLOB)