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#include "core/html/parser/HTMLParserThread.h"
33
34#include "platform/Task.h"
35#include "public/platform/Platform.h"
36#include "wtf/PassOwnPtr.h"
37
38namespace blink {
39
40static HTMLParserThread* s_sharedThread = 0;
41
42HTMLParserThread::HTMLParserThread()
43{
44}
45
46HTMLParserThread::~HTMLParserThread()
47{
48}
49
50void HTMLParserThread::init()
51{
52    ASSERT(!s_sharedThread);
53    s_sharedThread = new HTMLParserThread;
54}
55
56void HTMLParserThread::setupHTMLParserThread()
57{
58    ASSERT(m_thread);
59    m_thread->attachGC();
60}
61
62void HTMLParserThread::shutdown()
63{
64    ASSERT(s_sharedThread);
65    // currentThread will always be non-null in production, but can be null in Chromium unit tests.
66    if (blink::Platform::current()->currentThread() && s_sharedThread->isRunning()) {
67        s_sharedThread->postTask(WTF::bind(&HTMLParserThread::cleanupHTMLParserThread, s_sharedThread));
68    }
69    delete s_sharedThread;
70    s_sharedThread = 0;
71}
72
73void HTMLParserThread::cleanupHTMLParserThread()
74{
75    m_thread->detachGC();
76}
77
78HTMLParserThread* HTMLParserThread::shared()
79{
80    return s_sharedThread;
81}
82
83blink::WebThread& HTMLParserThread::platformThread()
84{
85    if (!isRunning()) {
86        m_thread = WebThreadSupportingGC::create("HTMLParserThread");
87        postTask(WTF::bind(&HTMLParserThread::setupHTMLParserThread, this));
88    }
89    return m_thread->platformThread();
90}
91
92bool HTMLParserThread::isRunning()
93{
94    return !!m_thread;
95}
96
97void HTMLParserThread::postTask(const Closure& closure)
98{
99    platformThread().postTask(new Task(closure));
100}
101
102} // namespace blink
103