1/*
2 * Copyright (C) 2008, 2014 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. ``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 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 "CachedResourceRequestInitiators.h"
31#include "EventNames.h"
32#include "TextCodecICU.h"
33#include "ThreadTimers.h"
34#include <wtf/MainThread.h>
35#include <wtf/ThreadSpecific.h>
36#include <wtf/Threading.h>
37#include <wtf/WTFThreadData.h>
38#include <wtf/text/StringImpl.h>
39
40#if PLATFORM(MAC)
41#include "TextCodeCMac.h"
42#endif
43
44#if ENABLE(WEB_REPLAY)
45#include "ReplayInputTypes.h"
46#endif
47
48namespace WebCore {
49
50ThreadSpecific<ThreadGlobalData>* ThreadGlobalData::staticData;
51#if USE(WEB_THREAD)
52ThreadGlobalData* ThreadGlobalData::sharedMainThreadStaticData;
53#endif
54
55ThreadGlobalData::ThreadGlobalData()
56    : m_cachedResourceRequestInitiators(adoptPtr(new CachedResourceRequestInitiators))
57    , m_eventNames(adoptPtr(new EventNames))
58    , m_threadTimers(adoptPtr(new ThreadTimers))
59#if ENABLE(WEB_REPLAY)
60    , m_inputTypes(std::make_unique<ReplayInputTypes>())
61#endif
62#ifndef NDEBUG
63    , m_isMainThread(isMainThread())
64#endif
65    , m_cachedConverterICU(adoptPtr(new ICUConverterWrapper))
66#if PLATFORM(MAC)
67    , m_cachedConverterTEC(adoptPtr(new TECConverterWrapper))
68#endif
69{
70    // This constructor will have been called on the main thread before being called on
71    // any other thread, and is only called once per thread - this makes this a convenient
72    // point to call methods that internally perform a one-time initialization that is not
73    // threadsafe.
74    wtfThreadData();
75    StringImpl::empty();
76}
77
78ThreadGlobalData::~ThreadGlobalData()
79{
80}
81
82void ThreadGlobalData::destroy()
83{
84#if PLATFORM(MAC)
85    m_cachedConverterTEC.clear();
86#endif
87
88    m_cachedConverterICU.clear();
89
90#if ENABLE(WEB_REPLAY)
91    m_inputTypes = nullptr;
92#endif
93
94    m_eventNames.clear();
95    m_threadTimers.clear();
96}
97
98#if USE(WEB_THREAD)
99void ThreadGlobalData::setWebCoreThreadData()
100{
101    ASSERT(isWebThread());
102    ASSERT(&threadGlobalData() != ThreadGlobalData::sharedMainThreadStaticData);
103
104    // Set WebThread's ThreadGlobalData object to be the same as the main UI thread.
105    ThreadGlobalData::staticData->replace(ThreadGlobalData::sharedMainThreadStaticData);
106
107    ASSERT(&threadGlobalData() == ThreadGlobalData::sharedMainThreadStaticData);
108}
109#endif
110
111ThreadGlobalData& threadGlobalData()
112{
113#if USE(WEB_THREAD)
114    if (UNLIKELY(!ThreadGlobalData::staticData)) {
115        ThreadGlobalData::staticData = new ThreadSpecific<ThreadGlobalData>;
116        // WebThread and main UI thread need to share the same object. Save it in a static
117        // here, the WebThread will pick it up in setWebCoreThreadData().
118        if (pthread_main_np())
119            ThreadGlobalData::sharedMainThreadStaticData = *ThreadGlobalData::staticData;
120    }
121    return **ThreadGlobalData::staticData;
122#else
123    if (!ThreadGlobalData::staticData)
124        ThreadGlobalData::staticData = new ThreadSpecific<ThreadGlobalData>;
125    return **ThreadGlobalData::staticData;
126#endif
127}
128
129} // namespace WebCore
130