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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef BASE_MESSAGE_LOOP_PROXY_H_ | 5 #ifndef BASE_MESSAGE_LOOP_PROXY_H_ |
| 6 #define BASE_MESSAGE_LOOP_PROXY_H_ | 6 #define BASE_MESSAGE_LOOP_PROXY_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #include "base/base_export.h" | 9 #include "base/base_export.h" |
| 10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
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| 116 // * The DataLoader object can be deleted while |task| is still running, | 116 // * The DataLoader object can be deleted while |task| is still running, |
| 117 // and the reply will cancel itself safely because it is bound to a | 117 // and the reply will cancel itself safely because it is bound to a |
| 118 // WeakPtr<>. | 118 // WeakPtr<>. |
| 119 bool PostTaskAndReply(const tracked_objects::Location& from_here, | 119 bool PostTaskAndReply(const tracked_objects::Location& from_here, |
| 120 const Closure& task, | 120 const Closure& task, |
| 121 const Closure& reply); | 121 const Closure& reply); |
| 122 | 122 |
| 123 template <class T> | 123 template <class T> |
| 124 bool DeleteSoon(const tracked_objects::Location& from_here, | 124 bool DeleteSoon(const tracked_objects::Location& from_here, |
| 125 const T* object) { | 125 const T* object) { |
| 126 return base::subtle::DeleteHelperInternal<T, bool>::DeleteOnMessageLoop( | 126 return subtle::DeleteHelperInternal<T, bool>::DeleteOnMessageLoop( |
| 127 this, from_here, object); | 127 this, from_here, object); |
| 128 } | 128 } |
| 129 template <class T> | 129 template <class T> |
| 130 bool ReleaseSoon(const tracked_objects::Location& from_here, | 130 bool ReleaseSoon(const tracked_objects::Location& from_here, |
| 131 T* object) { | 131 T* object) { |
| 132 return PostNonNestableTask(from_here, new ReleaseTask<T>(object)); | 132 return subtle::ReleaseHelperInternal<T, bool>::ReleaseOnMessageLoop( |
| 133 this, from_here, object); |
| 133 } | 134 } |
| 134 | 135 |
| 135 // Gets the MessageLoopProxy for the current message loop, creating one if | 136 // Gets the MessageLoopProxy for the current message loop, creating one if |
| 136 // needed. | 137 // needed. |
| 137 static scoped_refptr<MessageLoopProxy> current(); | 138 static scoped_refptr<MessageLoopProxy> current(); |
| 138 | 139 |
| 139 protected: | 140 protected: |
| 140 template <class T, class R> friend class subtle::DeleteHelperInternal; | |
| 141 friend class RefCountedThreadSafe<MessageLoopProxy, MessageLoopProxyTraits>; | 141 friend class RefCountedThreadSafe<MessageLoopProxy, MessageLoopProxyTraits>; |
| 142 friend struct MessageLoopProxyTraits; | 142 friend struct MessageLoopProxyTraits; |
| 143 | 143 |
| 144 MessageLoopProxy(); | 144 MessageLoopProxy(); |
| 145 virtual ~MessageLoopProxy(); | 145 virtual ~MessageLoopProxy(); |
| 146 | 146 |
| 147 // Called when the proxy is about to be deleted. Subclasses can override this | 147 // Called when the proxy is about to be deleted. Subclasses can override this |
| 148 // to provide deletion on specific threads. | 148 // to provide deletion on specific threads. |
| 149 virtual void OnDestruct() const; | 149 virtual void OnDestruct() const; |
| 150 | 150 |
| 151 private: |
| 152 template <class T, class R> friend class subtle::DeleteHelperInternal; |
| 153 template <class T, class R> friend class subtle::ReleaseHelperInternal; |
| 151 bool DeleteSoonInternal(const tracked_objects::Location& from_here, | 154 bool DeleteSoonInternal(const tracked_objects::Location& from_here, |
| 152 void(*deleter)(const void*), | 155 void(*deleter)(const void*), |
| 153 const void* object); | 156 const void* object); |
| 157 bool ReleaseSoonInternal(const tracked_objects::Location& from_here, |
| 158 void(*releaser)(const void*), |
| 159 const void* object); |
| 154 }; | 160 }; |
| 155 | 161 |
| 156 struct MessageLoopProxyTraits { | 162 struct MessageLoopProxyTraits { |
| 157 static void Destruct(const MessageLoopProxy* proxy) { | 163 static void Destruct(const MessageLoopProxy* proxy) { |
| 158 proxy->OnDestruct(); | 164 proxy->OnDestruct(); |
| 159 } | 165 } |
| 160 }; | 166 }; |
| 161 | 167 |
| 162 } // namespace base | 168 } // namespace base |
| 163 | 169 |
| 164 #endif // BASE_MESSAGE_LOOP_PROXY_H_ | 170 #endif // BASE_MESSAGE_LOOP_PROXY_H_ |
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