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#ifndef WTFThreadData_h 28#define WTFThreadData_h 29 30#include "wtf/HashMap.h" 31#include "wtf/HashSet.h" 32#include "wtf/Noncopyable.h" 33#include "wtf/ThreadSpecific.h" 34#include "wtf/Threading.h" 35#include "wtf/WTFExport.h" 36#include "wtf/text/StringHash.h" 37 38namespace WTF { 39 40class AtomicStringTable; 41struct ICUConverterWrapper; 42 43typedef void (*AtomicStringTableDestructor)(AtomicStringTable*); 44 45class WTF_EXPORT WTFThreadData { 46 WTF_MAKE_NONCOPYABLE(WTFThreadData); 47public: 48 WTFThreadData(); 49 ~WTFThreadData(); 50 51 AtomicStringTable* atomicStringTable() 52 { 53 return m_atomicStringTable; 54 } 55 56 ICUConverterWrapper& cachedConverterICU() { return *m_cachedConverterICU; } 57 58private: 59 AtomicStringTable* m_atomicStringTable; 60 AtomicStringTableDestructor m_atomicStringTableDestructor; 61 OwnPtr<ICUConverterWrapper> m_cachedConverterICU; 62 63 static ThreadSpecific<WTFThreadData>* staticData; 64 friend WTFThreadData& wtfThreadData(); 65 friend class AtomicStringTable; 66}; 67 68inline WTFThreadData& wtfThreadData() 69{ 70 // WRT WebCore: 71 // WTFThreadData is used on main thread before it could possibly be used 72 // on secondary ones, so there is no need for synchronization here. 73 // WRT JavaScriptCore: 74 // wtfThreadData() is initially called from initializeThreading(), ensuring 75 // this is initially called in a pthread_once locked context. 76 if (!WTFThreadData::staticData) 77 WTFThreadData::staticData = new ThreadSpecific<WTFThreadData>; 78 return **WTFThreadData::staticData; 79} 80 81} // namespace WTF 82 83using WTF::WTFThreadData; 84using WTF::wtfThreadData; 85 86#endif // WTFThreadData_h 87