blob: 705869d745138d158543e076bc85d47542aabedc [file] [log] [blame]
/*
* Copyright (C) 2008, 2014 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "config.h"
#include "ThreadGlobalData.h"
#include "CachedResourceRequestInitiators.h"
#include "EventNames.h"
#include "MIMETypeRegistry.h"
#include "QualifiedNameCache.h"
#include "TextCodecICU.h"
#include "ThreadTimers.h"
#include <wtf/MainThread.h>
#include <wtf/ThreadSpecific.h>
#include <wtf/Threading.h>
#include <wtf/text/StringImpl.h>
namespace WebCore {
ThreadGlobalData::ThreadGlobalData()
: m_cachedResourceRequestInitiators(makeUnique<CachedResourceRequestInitiators>())
, m_eventNames(EventNames::create())
, m_threadTimers(makeUnique<ThreadTimers>())
, m_qualifiedNameCache(makeUnique<QualifiedNameCache>())
#ifndef NDEBUG
, m_isMainThread(isMainThread())
#endif
, m_cachedConverterICU(makeUnique<ICUConverterWrapper>())
{
// This constructor will have been called on the main thread before being called on
// any other thread, and is only called once per thread - this makes this a convenient
// point to call methods that internally perform a one-time initialization that is not
// threadsafe.
Thread::current();
}
ThreadGlobalData::~ThreadGlobalData() = default;
void ThreadGlobalData::destroy()
{
m_cachedConverterICU = nullptr;
m_eventNames = nullptr;
m_threadTimers = nullptr;
m_qualifiedNameCache = nullptr;
}
#if USE(WEB_THREAD)
static ThreadSpecific<RefPtr<ThreadGlobalData>>* staticData { nullptr };
static ThreadGlobalData* sharedMainThreadStaticData { nullptr };
void ThreadGlobalData::setWebCoreThreadData()
{
ASSERT(isWebThread());
ASSERT(&threadGlobalData() != sharedMainThreadStaticData);
// Set WebThread's ThreadGlobalData object to be the same as the main UI thread.
**staticData = adoptRef(sharedMainThreadStaticData);
ASSERT(&threadGlobalData() == sharedMainThreadStaticData);
}
ThreadGlobalData& threadGlobalData()
{
if (UNLIKELY(!staticData)) {
staticData = new ThreadSpecific<RefPtr<ThreadGlobalData>>;
auto& result = **staticData;
ASSERT(!result);
result = adoptRef(new ThreadGlobalData);
// WebThread and main UI thread need to share the same object. Save it in a static
// here, the WebThread will pick it up in setWebCoreThreadData().
if (pthread_main_np()) {
sharedMainThreadStaticData = result.get();
result->ref();
}
return *result;
}
auto& result = **staticData;
if (!result)
result = adoptRef(new ThreadGlobalData);
return *result;
}
#else
static ThreadSpecific<ThreadGlobalData>* staticData { nullptr };
ThreadGlobalData& threadGlobalData()
{
if (UNLIKELY(!staticData))
staticData = new ThreadSpecific<ThreadGlobalData>;
return **staticData;
}
#endif
const MIMETypeRegistryThreadGlobalData& ThreadGlobalData::mimeTypeRegistryThreadGlobalData()
{
if (UNLIKELY(!m_MIMETypeRegistryThreadGlobalData))
m_MIMETypeRegistryThreadGlobalData = MIMETypeRegistry::createMIMETypeRegistryThreadGlobalData();
return *m_MIMETypeRegistryThreadGlobalData;
}
} // namespace WebCore