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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 IPC_IPC_SYNC_MESSAGE_FILTER_H_ | 5 #ifndef IPC_IPC_SYNC_MESSAGE_FILTER_H_ |
| 6 #define IPC_IPC_SYNC_MESSAGE_FILTER_H_ | 6 #define IPC_IPC_SYNC_MESSAGE_FILTER_H_ |
| 7 | 7 |
| 8 #include <set> | 8 #include <set> |
| 9 #include <vector> | 9 #include <vector> |
| 10 | 10 |
| (...skipping 15 matching lines...) Expand all Loading... |
| 26 namespace IPC { | 26 namespace IPC { |
| 27 class SyncChannel; | 27 class SyncChannel; |
| 28 | 28 |
| 29 // This MessageFilter allows sending synchronous IPC messages from a thread | 29 // This MessageFilter allows sending synchronous IPC messages from a thread |
| 30 // other than the listener thread associated with the SyncChannel. It does not | 30 // other than the listener thread associated with the SyncChannel. It does not |
| 31 // support fancy features that SyncChannel does, such as handling recursion or | 31 // support fancy features that SyncChannel does, such as handling recursion or |
| 32 // receiving messages while waiting for a response. Note that this object can | 32 // receiving messages while waiting for a response. Note that this object can |
| 33 // be used to send simultaneous synchronous messages from different threads. | 33 // be used to send simultaneous synchronous messages from different threads. |
| 34 class IPC_EXPORT SyncMessageFilter : public MessageFilter, public Sender { | 34 class IPC_EXPORT SyncMessageFilter : public MessageFilter, public Sender { |
| 35 public: | 35 public: |
| 36 // MessageSender implementation. | 36 // Sender implementation. |
| 37 bool Send(Message* message) override; | 37 bool Send(Message* message) override; |
| 38 | 38 |
| 39 // MessageFilter implementation. | 39 // MessageFilter implementation. |
| 40 void OnFilterAdded(Sender* sender) override; | 40 void OnFilterAdded(Channel* channel) override; |
| 41 void OnChannelError() override; | 41 void OnChannelError() override; |
| 42 void OnChannelClosing() override; | 42 void OnChannelClosing() override; |
| 43 bool OnMessageReceived(const Message& message) override; | 43 bool OnMessageReceived(const Message& message) override; |
| 44 | 44 |
| 45 protected: | 45 protected: |
| 46 explicit SyncMessageFilter(base::WaitableEvent* shutdown_event); | 46 explicit SyncMessageFilter(base::WaitableEvent* shutdown_event); |
| 47 ~SyncMessageFilter() override; | 47 ~SyncMessageFilter() override; |
| 48 | 48 |
| 49 private: | 49 private: |
| 50 class IOMessageLoopObserver; | 50 class IOMessageLoopObserver; |
| 51 | 51 |
| 52 friend class SyncChannel; | 52 friend class SyncChannel; |
| 53 friend class IOMessageLoopObserver; | 53 friend class IOMessageLoopObserver; |
| 54 | 54 |
| 55 void SendOnIOThread(Message* message); | 55 void SendOnIOThread(Message* message); |
| 56 // Signal all the pending sends as done, used in an error condition. | 56 // Signal all the pending sends as done, used in an error condition. |
| 57 void SignalAllEvents(); | 57 void SignalAllEvents(); |
| 58 | 58 |
| 59 void OnShutdownEventSignaled(base::WaitableEvent* event); | 59 void OnShutdownEventSignaled(base::WaitableEvent* event); |
| 60 void OnIOMessageLoopDestroyed(); | 60 void OnIOMessageLoopDestroyed(); |
| 61 | 61 |
| 62 // The channel to which this filter was added. | 62 // The channel to which this filter was added. |
| 63 Sender* sender_; | 63 Channel* channel_; |
| 64 | 64 |
| 65 // The process's main thread. | 65 // The process's main thread. |
| 66 scoped_refptr<base::SingleThreadTaskRunner> listener_task_runner_; | 66 scoped_refptr<base::SingleThreadTaskRunner> listener_task_runner_; |
| 67 | 67 |
| 68 // The message loop where the Channel lives. | 68 // The message loop where the Channel lives. |
| 69 scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_; | 69 scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_; |
| 70 | 70 |
| 71 typedef std::set<PendingSyncMsg*> PendingSyncMessages; | 71 typedef std::set<PendingSyncMsg*> PendingSyncMessages; |
| 72 PendingSyncMessages pending_sync_messages_; | 72 PendingSyncMessages pending_sync_messages_; |
| 73 | 73 |
| (...skipping 16 matching lines...) Expand all Loading... |
| 90 scoped_refptr<IOMessageLoopObserver> io_message_loop_observer_; | 90 scoped_refptr<IOMessageLoopObserver> io_message_loop_observer_; |
| 91 | 91 |
| 92 base::WeakPtrFactory<SyncMessageFilter> weak_factory_; | 92 base::WeakPtrFactory<SyncMessageFilter> weak_factory_; |
| 93 | 93 |
| 94 DISALLOW_COPY_AND_ASSIGN(SyncMessageFilter); | 94 DISALLOW_COPY_AND_ASSIGN(SyncMessageFilter); |
| 95 }; | 95 }; |
| 96 | 96 |
| 97 } // namespace IPC | 97 } // namespace IPC |
| 98 | 98 |
| 99 #endif // IPC_IPC_SYNC_MESSAGE_FILTER_H_ | 99 #endif // IPC_IPC_SYNC_MESSAGE_FILTER_H_ |
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