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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 "ThreadSpecific.h" | |
| 23 | |
| 24 #if OS(WIN) | |
| 25 | |
| 26 #include "StdLibExtras.h" | |
| 27 #include "ThreadingPrimitives.h" | |
| 28 #include "wtf/Allocator.h" | |
| 29 #include "wtf/DoublyLinkedList.h" | |
| 30 | |
| 31 namespace WTF { | |
| 32 | |
| 33 static DoublyLinkedList<PlatformThreadSpecificKey>& destructorsList() { | |
| 34 DEFINE_STATIC_LOCAL(DoublyLinkedList<PlatformThreadSpecificKey>, staticList, | |
| 35 ()); | |
| 36 return staticList; | |
| 37 } | |
| 38 | |
| 39 static Mutex& destructorsMutex() { | |
| 40 DEFINE_STATIC_LOCAL(Mutex, staticMutex, ()); | |
| 41 return staticMutex; | |
| 42 } | |
| 43 | |
| 44 class PlatformThreadSpecificKey | |
| 45 : public DoublyLinkedListNode<PlatformThreadSpecificKey> { | |
| 46 USING_FAST_MALLOC(PlatformThreadSpecificKey); | |
| 47 WTF_MAKE_NONCOPYABLE(PlatformThreadSpecificKey); | |
| 48 | |
| 49 public: | |
| 50 friend class DoublyLinkedListNode<PlatformThreadSpecificKey>; | |
| 51 | |
| 52 PlatformThreadSpecificKey(void (*destructor)(void*)) | |
| 53 : m_destructor(destructor) { | |
| 54 m_tlsKey = TlsAlloc(); | |
| 55 if (m_tlsKey == TLS_OUT_OF_INDEXES) | |
| 56 CRASH(); | |
| 57 } | |
| 58 | |
| 59 ~PlatformThreadSpecificKey() { TlsFree(m_tlsKey); } | |
| 60 | |
| 61 void setValue(void* data) { TlsSetValue(m_tlsKey, data); } | |
| 62 void* value() { return TlsGetValue(m_tlsKey); } | |
| 63 | |
| 64 void callDestructor() { | |
| 65 if (void* data = value()) | |
| 66 m_destructor(data); | |
| 67 } | |
| 68 | |
| 69 private: | |
| 70 void (*m_destructor)(void*); | |
| 71 DWORD m_tlsKey; | |
| 72 PlatformThreadSpecificKey* m_prev; | |
| 73 PlatformThreadSpecificKey* m_next; | |
| 74 }; | |
| 75 | |
| 76 long& tlsKeyCount() { | |
| 77 static long count; | |
| 78 return count; | |
| 79 } | |
| 80 | |
| 81 DWORD* tlsKeys() { | |
| 82 static DWORD keys[kMaxTlsKeySize]; | |
| 83 return keys; | |
| 84 } | |
| 85 | |
| 86 void threadSpecificKeyCreate(ThreadSpecificKey* key, | |
| 87 void (*destructor)(void*)) { | |
| 88 *key = new PlatformThreadSpecificKey(destructor); | |
| 89 | |
| 90 MutexLocker locker(destructorsMutex()); | |
| 91 destructorsList().push(*key); | |
| 92 } | |
| 93 | |
| 94 void threadSpecificKeyDelete(ThreadSpecificKey key) { | |
| 95 MutexLocker locker(destructorsMutex()); | |
| 96 destructorsList().remove(key); | |
| 97 delete key; | |
| 98 } | |
| 99 | |
| 100 void threadSpecificSet(ThreadSpecificKey key, void* data) { | |
| 101 key->setValue(data); | |
| 102 } | |
| 103 | |
| 104 void* threadSpecificGet(ThreadSpecificKey key) { | |
| 105 return key->value(); | |
| 106 } | |
| 107 | |
| 108 void ThreadSpecificThreadExit() { | |
| 109 for (long i = 0; i < tlsKeyCount(); i++) { | |
| 110 // The layout of ThreadSpecific<T>::Data does not depend on T. So we are | |
| 111 // safe to do the static cast to ThreadSpecific<int> in order to access its | |
| 112 // data member. | |
| 113 ThreadSpecific<int>::Data* data = | |
| 114 static_cast<ThreadSpecific<int>::Data*>(TlsGetValue(tlsKeys()[i])); | |
| 115 if (data) | |
| 116 data->destructor(data); | |
| 117 } | |
| 118 | |
| 119 MutexLocker locker(destructorsMutex()); | |
| 120 PlatformThreadSpecificKey* key = destructorsList().head(); | |
| 121 while (key) { | |
| 122 PlatformThreadSpecificKey* nextKey = key->next(); | |
| 123 key->callDestructor(); | |
| 124 key = nextKey; | |
| 125 } | |
| 126 } | |
| 127 | |
| 128 } // namespace WTF | |
| 129 | |
| 130 #endif // OS(WIN) | |
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Chromium Code Reviews
Issue 2767153004:
Move files in wtf/ to platform/wtf/ (Part 12). (Closed)
