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| 1 /* | |
| 2 * Copyright (C) 2006, 2007, 2009, 2010, 2012 Apple Inc. All rights reserved. | |
| 3 * | |
| 4 * This library is free software; you can redistribute it and/or | |
| 5 * modify it under the terms of the GNU Library General Public | |
| 6 * License as published by the Free Software Foundation; either | |
| 7 * version 2 of the License, or (at your option) any later version. | |
| 8 * | |
| 9 * This library is distributed in the hope that it will be useful, | |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 * Library General Public License for more details. | |
| 13 * | |
| 14 * You should have received a copy of the GNU Library General Public License | |
| 15 * along with this library; see the file COPYING.LIB. If not, write to | |
| 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 17 * Boston, MA 02110-1301, USA. | |
| 18 * | |
| 19 */ | |
| 20 | |
| 21 #ifndef TreeShared_h | |
| 22 #define TreeShared_h | |
| 23 | |
| 24 #include "wtf/Assertions.h" | |
| 25 #include "wtf/MainThread.h" | |
| 26 #include "wtf/Noncopyable.h" | |
| 27 | |
| 28 namespace WebCore { | |
| 29 | |
| 30 #ifndef NDEBUG | |
| 31 template<typename NodeType> class TreeShared; | |
| 32 template<typename NodeType> void adopted(TreeShared<NodeType>*); | |
| 33 #endif | |
| 34 | |
| 35 template<typename NodeType> class TreeShared { | |
| 36 WTF_MAKE_NONCOPYABLE(TreeShared); | |
| 37 protected: | |
| 38 TreeShared() | |
| 39 : m_refCount(1) | |
| 40 #ifndef NDEBUG | |
| 41 , m_deletionHasBegun(false) | |
| 42 , m_inRemovedLastRefFunction(false) | |
| 43 , m_adoptionIsRequired(true) | |
| 44 #endif | |
| 45 { | |
| 46 ASSERT(isMainThread()); | |
| 47 } | |
| 48 | |
| 49 ~TreeShared() | |
| 50 { | |
| 51 ASSERT(isMainThread()); | |
| 52 ASSERT(!m_refCount); | |
| 53 ASSERT(m_deletionHasBegun); | |
| 54 ASSERT(!m_adoptionIsRequired); | |
| 55 } | |
| 56 | |
| 57 public: | |
| 58 void ref() | |
| 59 { | |
| 60 ASSERT(isMainThread()); | |
| 61 ASSERT(!m_deletionHasBegun); | |
| 62 ASSERT(!m_inRemovedLastRefFunction); | |
| 63 ASSERT(!m_adoptionIsRequired); | |
| 64 ++m_refCount; | |
| 65 } | |
| 66 | |
| 67 void deref() | |
| 68 { | |
| 69 ASSERT(isMainThread()); | |
| 70 ASSERT(m_refCount >= 0); | |
| 71 ASSERT(!m_deletionHasBegun); | |
| 72 ASSERT(!m_inRemovedLastRefFunction); | |
| 73 ASSERT(!m_adoptionIsRequired); | |
| 74 NodeType* thisNode = static_cast<NodeType*>(this); | |
| 75 if (--m_refCount <= 0 && !thisNode->hasTreeSharedParent()) { | |
| 76 #ifndef NDEBUG | |
| 77 m_inRemovedLastRefFunction = true; | |
| 78 #endif | |
| 79 thisNode->removedLastRef(); | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 bool hasOneRef() const | |
| 84 { | |
| 85 ASSERT(!m_deletionHasBegun); | |
| 86 ASSERT(!m_inRemovedLastRefFunction); | |
| 87 return m_refCount == 1; | |
| 88 } | |
| 89 | |
| 90 int refCount() const | |
| 91 { | |
| 92 return m_refCount; | |
| 93 } | |
| 94 | |
| 95 private: | |
| 96 int m_refCount; | |
| 97 | |
| 98 #ifndef NDEBUG | |
| 99 public: | |
| 100 bool m_deletionHasBegun; | |
| 101 bool m_inRemovedLastRefFunction; | |
| 102 private: | |
| 103 friend void adopted<>(TreeShared<NodeType>*); | |
| 104 bool m_adoptionIsRequired; | |
| 105 #endif | |
| 106 }; | |
| 107 | |
| 108 #ifndef NDEBUG | |
| 109 | |
| 110 template<typename NodeType> inline void adopted(TreeShared<NodeType>* object) | |
| 111 { | |
| 112 if (!object) | |
| 113 return; | |
| 114 ASSERT(!object->m_deletionHasBegun); | |
| 115 ASSERT(!object->m_inRemovedLastRefFunction); | |
| 116 object->m_adoptionIsRequired = false; | |
| 117 } | |
| 118 | |
| 119 #endif | |
| 120 | |
| 121 } | |
| 122 | |
| 123 #endif // TreeShared.h | |
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Chromium Code Reviews
Issue 26113002:
Move core/platform/text/Locale* to platform/text (Closed)
Base URL: svn://svn.chromium.org/blink/trunk