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| 1 /* | |
| 2 * Copyright (C) 2009 Jian Li <jianli@chromium.org> | |
| 3 * Copyright (C) 2012 Patrick Gansterer <paroga@paroga.com> | |
| 4 * | |
| 5 * This library is free software; you can redistribute it and/or | |
| 6 * modify it under the terms of the GNU Library General Public | |
| 7 * License as published by the Free Software Foundation; either | |
| 8 * version 2 of the License, or (at your option) any later version. | |
| 9 * | |
| 10 * This library is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 * Library General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU Library General Public License | |
| 16 * along with this library; see the file COPYING.LIB. If not, write to | |
| 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 18 * Boston, MA 02110-1301, USA. | |
| 19 * | |
| 20 */ | |
| 21 | |
| 22 #include "config.h" | |
| 23 #include "ThreadSpecific.h" | |
| 24 | |
| 25 #if OS(WINDOWS) | |
| 26 | |
| 27 #include "StdLibExtras.h" | |
| 28 #include "ThreadingPrimitives.h" | |
| 29 #include <wtf/DoublyLinkedList.h> | |
| 30 | |
| 31 #if !USE(PTHREADS) | |
| 32 | |
| 33 namespace WTF { | |
| 34 | |
| 35 static DoublyLinkedList<PlatformThreadSpecificKey>& destructorsList() | |
| 36 { | |
| 37 DEFINE_STATIC_LOCAL(DoublyLinkedList<PlatformThreadSpecificKey>, staticList,
()); | |
| 38 return staticList; | |
| 39 } | |
| 40 | |
| 41 static Mutex& destructorsMutex() | |
| 42 { | |
| 43 DEFINE_STATIC_LOCAL(Mutex, staticMutex, ()); | |
| 44 return staticMutex; | |
| 45 } | |
| 46 | |
| 47 class PlatformThreadSpecificKey : public DoublyLinkedListNode<PlatformThreadSpec
ificKey> { | |
| 48 public: | |
| 49 friend class DoublyLinkedListNode<PlatformThreadSpecificKey>; | |
| 50 | |
| 51 PlatformThreadSpecificKey(void (*destructor)(void *)) | |
| 52 : m_destructor(destructor) | |
| 53 { | |
| 54 m_tlsKey = TlsAlloc(); | |
| 55 if (m_tlsKey == TLS_OUT_OF_INDEXES) | |
| 56 CRASH(); | |
| 57 } | |
| 58 | |
| 59 ~PlatformThreadSpecificKey() | |
| 60 { | |
| 61 TlsFree(m_tlsKey); | |
| 62 } | |
| 63 | |
| 64 void setValue(void* data) { TlsSetValue(m_tlsKey, data); } | |
| 65 void* value() { return TlsGetValue(m_tlsKey); } | |
| 66 | |
| 67 void callDestructor() | |
| 68 { | |
| 69 if (void* data = value()) | |
| 70 m_destructor(data); | |
| 71 } | |
| 72 | |
| 73 private: | |
| 74 void (*m_destructor)(void *); | |
| 75 DWORD m_tlsKey; | |
| 76 PlatformThreadSpecificKey* m_prev; | |
| 77 PlatformThreadSpecificKey* m_next; | |
| 78 }; | |
| 79 | |
| 80 long& tlsKeyCount() | |
| 81 { | |
| 82 static long count; | |
| 83 return count; | |
| 84 } | |
| 85 | |
| 86 DWORD* tlsKeys() | |
| 87 { | |
| 88 static DWORD keys[kMaxTlsKeySize]; | |
| 89 return keys; | |
| 90 } | |
| 91 | |
| 92 void threadSpecificKeyCreate(ThreadSpecificKey* key, void (*destructor)(void *)) | |
| 93 { | |
| 94 *key = new PlatformThreadSpecificKey(destructor); | |
| 95 | |
| 96 MutexLocker locker(destructorsMutex()); | |
| 97 destructorsList().push(*key); | |
| 98 } | |
| 99 | |
| 100 void threadSpecificKeyDelete(ThreadSpecificKey key) | |
| 101 { | |
| 102 MutexLocker locker(destructorsMutex()); | |
| 103 destructorsList().remove(key); | |
| 104 delete key; | |
| 105 } | |
| 106 | |
| 107 void threadSpecificSet(ThreadSpecificKey key, void* data) | |
| 108 { | |
| 109 key->setValue(data); | |
| 110 } | |
| 111 | |
| 112 void* threadSpecificGet(ThreadSpecificKey key) | |
| 113 { | |
| 114 return key->value(); | |
| 115 } | |
| 116 | |
| 117 void ThreadSpecificThreadExit() | |
| 118 { | |
| 119 for (long i = 0; i < tlsKeyCount(); i++) { | |
| 120 // The layout of ThreadSpecific<T>::Data does not depend on T. So we are
safe to do the static cast to ThreadSpecific<int> in order to access its data m
ember. | |
| 121 ThreadSpecific<int>::Data* data = static_cast<ThreadSpecific<int>::Data*
>(TlsGetValue(tlsKeys()[i])); | |
| 122 if (data) | |
| 123 data->destructor(data); | |
| 124 } | |
| 125 | |
| 126 MutexLocker locker(destructorsMutex()); | |
| 127 PlatformThreadSpecificKey* key = destructorsList().head(); | |
| 128 while (key) { | |
| 129 PlatformThreadSpecificKey* nextKey = key->next(); | |
| 130 key->callDestructor(); | |
| 131 key = nextKey; | |
| 132 } | |
| 133 } | |
| 134 | |
| 135 } // namespace WTF | |
| 136 | |
| 137 #endif // !USE(PTHREADS) | |
| 138 | |
| 139 #endif // OS(WINDOWS) | |
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Chromium Code Reviews
Issue 14238015:
Move Source/WTF/wtf to Source/wtf (Closed)
Base URL: svn://svn.chromium.org/blink/trunk