1/*
2 * Copyright (C) 2008 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 COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 */
26
27#include "config.h"
28#include "ThreadGlobalData.h"
29
30#include "EventNames.h"
31#include "StringImpl.h"
32#include "ThreadTimers.h"
33#include <wtf/UnusedParam.h>
34
35#if USE(ICU_UNICODE)
36#include "TextCodecICU.h"
37#endif
38
39#if PLATFORM(MAC)
40#include "TextCodecMac.h"
41#endif
42
43#if ENABLE(WORKERS)
44#include <wtf/Threading.h>
45#include <wtf/ThreadSpecific.h>
46using namespace WTF;
47#endif
48
49namespace WebCore {
50
51#if ENABLE(WORKERS)
52ThreadSpecific<ThreadGlobalData>* ThreadGlobalData::staticData;
53#else
54ThreadGlobalData* ThreadGlobalData::staticData;
55#endif
56
57ThreadGlobalData::ThreadGlobalData()
58    : m_emptyString(new StringImpl)
59    , m_atomicStringTable(new HashSet<StringImpl*>)
60    , m_eventNames(new EventNames)
61    , m_threadTimers(new ThreadTimers)
62#ifndef NDEBUG
63    , m_isMainThread(isMainThread())
64#endif
65#if USE(ICU_UNICODE)
66    , m_cachedConverterICU(new ICUConverterWrapper)
67#endif
68#if PLATFORM(MAC)
69    , m_cachedConverterTEC(new TECConverterWrapper)
70#endif
71{
72}
73
74ThreadGlobalData::~ThreadGlobalData()
75{
76#if PLATFORM(MAC)
77    delete m_cachedConverterTEC;
78#endif
79#if USE(ICU_UNICODE)
80    delete m_cachedConverterICU;
81#endif
82    delete m_eventNames;
83    delete m_atomicStringTable;
84    delete m_threadTimers;
85
86    // Using member variable m_isMainThread instead of calling WTF::isMainThread() directly
87    // to avoid issues described in https://bugs.webkit.org/show_bug.cgi?id=25973.
88    // In short, some pthread-based platforms and ports can not use WTF::CurrentThread() and WTF::isMainThread()
89    // in destructors of thread-specific data.
90    ASSERT(m_isMainThread || m_emptyString->hasOneRef()); // We intentionally don't clean up static data on application quit, so there will be many strings remaining on the main thread.
91
92    delete m_emptyString;
93}
94
95} // namespace WebCore
96