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| 1 /* | 1 /* |
| 2 * Copyright (C) 2006, 2007, 2009, 2010, 2012 Apple Inc. All rights reserved. | 2 * Copyright (C) 2006, 2007, 2009, 2010, 2012 Apple Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * This library is free software; you can redistribute it and/or | 4 * This library is free software; you can redistribute it and/or |
| 5 * modify it under the terms of the GNU Library General Public | 5 * modify it under the terms of the GNU Library General Public |
| 6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
| 7 * version 2 of the License, or (at your option) any later version. | 7 * version 2 of the License, or (at your option) any later version. |
| 8 * | 8 * |
| 9 * This library is distributed in the hope that it will be useful, | 9 * This library is distributed in the hope that it will be useful, |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| (...skipping 10 matching lines...) Expand all Loading... |
| 21 #ifndef TreeShared_h | 21 #ifndef TreeShared_h |
| 22 #define TreeShared_h | 22 #define TreeShared_h |
| 23 | 23 |
| 24 #include "public/platform/WebPrivatePtr.h" | 24 #include "public/platform/WebPrivatePtr.h" |
| 25 #include "wtf/Assertions.h" | 25 #include "wtf/Assertions.h" |
| 26 #include "wtf/MainThread.h" | 26 #include "wtf/MainThread.h" |
| 27 #include "wtf/Noncopyable.h" | 27 #include "wtf/Noncopyable.h" |
| 28 | 28 |
| 29 namespace WebCore { | 29 namespace WebCore { |
| 30 | 30 |
| 31 #if SECURITY_ASSERT_ENABLED | 31 #if ENABLE(SECURITY_ASSERT) |
| 32 template<typename NodeType> class TreeShared; | 32 template<typename NodeType> class TreeShared; |
| 33 template<typename NodeType> void adopted(TreeShared<NodeType>*); | 33 template<typename NodeType> void adopted(TreeShared<NodeType>*); |
| 34 #endif | 34 #endif |
| 35 | 35 |
| 36 template<typename NodeType> class TreeShared : public NoBaseWillBeGarbageCollect
edFinalized<NodeType> { | 36 template<typename NodeType> class TreeShared : public NoBaseWillBeGarbageCollect
edFinalized<NodeType> { |
| 37 WTF_MAKE_NONCOPYABLE(TreeShared); | 37 WTF_MAKE_NONCOPYABLE(TreeShared); |
| 38 protected: | 38 protected: |
| 39 TreeShared() | 39 TreeShared() |
| 40 : m_refCount(1) | 40 : m_refCount(1) |
| 41 #if SECURITY_ASSERT_ENABLED | 41 #if ENABLE(SECURITY_ASSERT) |
| 42 , m_deletionHasBegun(false) | 42 , m_deletionHasBegun(false) |
| 43 #if ASSERT_ENABLED | 43 #if ENABLE(ASSERT) |
| 44 , m_inRemovedLastRefFunction(false) | 44 , m_inRemovedLastRefFunction(false) |
| 45 , m_adoptionIsRequired(true) | 45 , m_adoptionIsRequired(true) |
| 46 #endif | 46 #endif |
| 47 #endif | 47 #endif |
| 48 { | 48 { |
| 49 ASSERT(isMainThread()); | 49 ASSERT(isMainThread()); |
| 50 } | 50 } |
| 51 | 51 |
| 52 ~TreeShared() | 52 ~TreeShared() |
| 53 { | 53 { |
| (...skipping 15 matching lines...) Expand all Loading... |
| 69 | 69 |
| 70 void deref() | 70 void deref() |
| 71 { | 71 { |
| 72 ASSERT(isMainThread()); | 72 ASSERT(isMainThread()); |
| 73 ASSERT(m_refCount > 0); | 73 ASSERT(m_refCount > 0); |
| 74 ASSERT_WITH_SECURITY_IMPLICATION(!m_deletionHasBegun); | 74 ASSERT_WITH_SECURITY_IMPLICATION(!m_deletionHasBegun); |
| 75 ASSERT(!m_inRemovedLastRefFunction); | 75 ASSERT(!m_inRemovedLastRefFunction); |
| 76 ASSERT(!m_adoptionIsRequired); | 76 ASSERT(!m_adoptionIsRequired); |
| 77 NodeType* thisNode = static_cast<NodeType*>(this); | 77 NodeType* thisNode = static_cast<NodeType*>(this); |
| 78 if (!--m_refCount && !thisNode->hasTreeSharedParent()) { | 78 if (!--m_refCount && !thisNode->hasTreeSharedParent()) { |
| 79 #if ASSERT_ENABLED | 79 #if ENABLE(ASSERT) |
| 80 m_inRemovedLastRefFunction = true; | 80 m_inRemovedLastRefFunction = true; |
| 81 #endif | 81 #endif |
| 82 thisNode->removedLastRef(); | 82 thisNode->removedLastRef(); |
| 83 } | 83 } |
| 84 } | 84 } |
| 85 | 85 |
| 86 int refCount() const { return m_refCount; } | 86 int refCount() const { return m_refCount; } |
| 87 | 87 |
| 88 private: | 88 private: |
| 89 int m_refCount; | 89 int m_refCount; |
| 90 | 90 |
| 91 #if SECURITY_ASSERT_ENABLED | 91 #if ENABLE(SECURITY_ASSERT) |
| 92 public: | 92 public: |
| 93 bool m_deletionHasBegun; | 93 bool m_deletionHasBegun; |
| 94 #if ASSERT_ENABLED | 94 #if ENABLE(ASSERT) |
| 95 bool m_inRemovedLastRefFunction; | 95 bool m_inRemovedLastRefFunction; |
| 96 | 96 |
| 97 private: | 97 private: |
| 98 friend void adopted<>(TreeShared<NodeType>*); | 98 friend void adopted<>(TreeShared<NodeType>*); |
| 99 bool m_adoptionIsRequired; | 99 bool m_adoptionIsRequired; |
| 100 #endif | 100 #endif |
| 101 #endif | 101 #endif |
| 102 }; | 102 }; |
| 103 | 103 |
| 104 #if SECURITY_ASSERT_ENABLED | 104 #if ENABLE(SECURITY_ASSERT) |
| 105 template<typename NodeType> void adopted(TreeShared<NodeType>* object) | 105 template<typename NodeType> void adopted(TreeShared<NodeType>* object) |
| 106 { | 106 { |
| 107 if (!object) | 107 if (!object) |
| 108 return; | 108 return; |
| 109 | 109 |
| 110 ASSERT_WITH_SECURITY_IMPLICATION(!object->m_deletionHasBegun); | 110 ASSERT_WITH_SECURITY_IMPLICATION(!object->m_deletionHasBegun); |
| 111 #if ASSERT_ENABLED | 111 #if ENABLE(ASSERT) |
| 112 ASSERT(!object->m_inRemovedLastRefFunction); | 112 ASSERT(!object->m_inRemovedLastRefFunction); |
| 113 object->m_adoptionIsRequired = false; | 113 object->m_adoptionIsRequired = false; |
| 114 #endif | 114 #endif |
| 115 } | 115 } |
| 116 #endif | 116 #endif |
| 117 | 117 |
| 118 } | 118 } |
| 119 | 119 |
| 120 #endif // TreeShared.h | 120 #endif // TreeShared.h |
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