/* | |
* Copyright (C) 2008 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 COMPUTER, 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 COMPUTER, 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. | |
* | |
*/ | |
#ifndef ThreadGlobalData_h | |
#define ThreadGlobalData_h | |
#include "StringHash.h" | |
#include <wtf/HashMap.h> | |
#include <wtf/HashSet.h> | |
#include <wtf/Noncopyable.h> | |
#if ENABLE(WORKERS) | |
#include <wtf/ThreadSpecific.h> | |
#include <wtf/Threading.h> | |
using WTF::ThreadSpecific; | |
#endif | |
namespace WebCore { | |
class EventNames; | |
struct ICUConverterWrapper; | |
struct TECConverterWrapper; | |
class ThreadTimers; | |
class ThreadGlobalData : public Noncopyable { | |
public: | |
ThreadGlobalData(); | |
~ThreadGlobalData(); | |
EventNames& eventNames() { return *m_eventNames; } | |
HashSet<StringImpl*>& atomicStringTable() { return *m_atomicStringTable; } | |
ThreadTimers& threadTimers() { return *m_threadTimers; } | |
#if USE(ICU_UNICODE) | |
ICUConverterWrapper& cachedConverterICU() { return *m_cachedConverterICU; } | |
#endif | |
#if PLATFORM(MAC) | |
TECConverterWrapper& cachedConverterTEC() { return *m_cachedConverterTEC; } | |
#endif | |
private: | |
HashSet<StringImpl*>* m_atomicStringTable; | |
EventNames* m_eventNames; | |
ThreadTimers* m_threadTimers; | |
#ifndef NDEBUG | |
bool m_isMainThread; | |
#endif | |
#if USE(ICU_UNICODE) | |
ICUConverterWrapper* m_cachedConverterICU; | |
#endif | |
#if PLATFORM(MAC) | |
TECConverterWrapper* m_cachedConverterTEC; | |
#endif | |
#if ENABLE(WORKERS) | |
static ThreadSpecific<ThreadGlobalData>* staticData; | |
#else | |
static ThreadGlobalData* staticData; | |
#endif | |
friend ThreadGlobalData& threadGlobalData(); | |
}; | |
inline ThreadGlobalData& threadGlobalData() | |
{ | |
// FIXME: Workers are not necessarily the only feature that make per-thread global data necessary. | |
// We need to check for e.g. database objects manipulating strings on secondary threads. | |
#if ENABLE(WORKERS) | |
// ThreadGlobalData is used on main thread before it could possibly be used on secondary ones, so there is no need for synchronization here. | |
if (!ThreadGlobalData::staticData) | |
ThreadGlobalData::staticData = new ThreadSpecific<ThreadGlobalData>; | |
return **ThreadGlobalData::staticData; | |
#else | |
if (!ThreadGlobalData::staticData) { | |
ThreadGlobalData::staticData = static_cast<ThreadGlobalData*>(fastMalloc(sizeof(ThreadGlobalData))); | |
// ThreadGlobalData constructor indirectly uses staticData, so we need to set up the memory before invoking it. | |
new (ThreadGlobalData::staticData) ThreadGlobalData; | |
} | |
return *ThreadGlobalData::staticData; | |
#endif | |
} | |
} // namespace WebCore | |
#endif // ThreadGlobalData_h |