blob: 613fb9b0ce215e3bad5d500243923fe2f63c76f5 [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 "FontCache.h"
#include "MIMETypeRegistry.h"
#include "QualifiedNameCache.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_threadTimers(makeUnique<ThreadTimers>())
#ifndef NDEBUG
, m_isMainThread(isMainThread())
#endif
{
}
ThreadGlobalData::~ThreadGlobalData() = default;
void ThreadGlobalData::destroy()
{
m_destroyed = true;
PAL::ThreadGlobalData::destroy();
// The ThreadGlobalData destructor is called under the TLS destruction
// callback, which is later than when the static atom table is destroyed.
// To avoid AtomStrings being destroyed after the table, we clear objects
// that have AtomStrings in them.
m_eventNames = nullptr;
m_threadTimers = nullptr;
m_qualifiedNameCache = nullptr;
m_fontCache = 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
void ThreadGlobalData::initializeCachedResourceRequestInitiators()
{
ASSERT(!m_cachedResourceRequestInitiators);
m_cachedResourceRequestInitiators = makeUnique<CachedResourceRequestInitiators>();
}
void ThreadGlobalData::initializeEventNames()
{
ASSERT(!m_eventNames);
m_eventNames = EventNames::create();
}
void ThreadGlobalData::initializeQualifiedNameCache()
{
ASSERT(!m_qualifiedNameCache);
m_qualifiedNameCache = makeUnique<QualifiedNameCache>();
}
void ThreadGlobalData::initializeMimeTypeRegistryThreadGlobalData()
{
ASSERT(!m_MIMETypeRegistryThreadGlobalData);
m_MIMETypeRegistryThreadGlobalData = MIMETypeRegistry::createMIMETypeRegistryThreadGlobalData();
}
void ThreadGlobalData::initializeFontCache()
{
ASSERT(!m_fontCache);
m_fontCache = makeUnique<FontCache>();
}
} // namespace WebCore
namespace PAL {
ThreadGlobalData& threadGlobalData()
{
return WebCore::threadGlobalData();
}
} // namespace PAL