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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 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
11 #include "base/memory/ref_counted.h" | 11 #include "base/memory/ref_counted.h" |
12 #include "base/synchronization/lock.h" | 12 #include "base/synchronization/lock.h" |
13 #include "ipc/ipc_channel_proxy.h" | 13 #include "ipc/ipc_sender.h" |
14 #include "ipc/ipc_sync_message.h" | 14 #include "ipc/ipc_sync_message.h" |
| 15 #include "ipc/message_filter.h" |
15 | 16 |
16 namespace base { | 17 namespace base { |
17 class MessageLoopProxy; | 18 class MessageLoopProxy; |
18 class WaitableEvent; | 19 class WaitableEvent; |
19 } | 20 } |
20 | 21 |
21 namespace IPC { | 22 namespace IPC { |
22 | 23 |
23 // This MessageFilter allows sending synchronous IPC messages from a thread | 24 // This MessageFilter allows sending synchronous IPC messages from a thread |
24 // other than the listener thread associated with the SyncChannel. It does not | 25 // other than the listener thread associated with the SyncChannel. It does not |
25 // support fancy features that SyncChannel does, such as handling recursion or | 26 // support fancy features that SyncChannel does, such as handling recursion or |
26 // receiving messages while waiting for a response. Note that this object can | 27 // receiving messages while waiting for a response. Note that this object can |
27 // be used to send simultaneous synchronous messages from different threads. | 28 // be used to send simultaneous synchronous messages from different threads. |
28 class IPC_EXPORT SyncMessageFilter : public ChannelProxy::MessageFilter, | 29 class IPC_EXPORT SyncMessageFilter : public MessageFilter, public Sender { |
29 public Sender { | |
30 public: | 30 public: |
31 explicit SyncMessageFilter(base::WaitableEvent* shutdown_event); | 31 explicit SyncMessageFilter(base::WaitableEvent* shutdown_event); |
32 | 32 |
33 // MessageSender implementation. | 33 // MessageSender implementation. |
34 virtual bool Send(Message* message) OVERRIDE; | 34 virtual bool Send(Message* message) OVERRIDE; |
35 | 35 |
36 // ChannelProxy::MessageFilter implementation. | 36 // MessageFilter implementation. |
37 virtual void OnFilterAdded(Channel* channel) OVERRIDE; | 37 virtual void OnFilterAdded(Channel* channel) OVERRIDE; |
38 virtual void OnChannelError() OVERRIDE; | 38 virtual void OnChannelError() OVERRIDE; |
39 virtual void OnChannelClosing() OVERRIDE; | 39 virtual void OnChannelClosing() OVERRIDE; |
40 virtual bool OnMessageReceived(const Message& message) OVERRIDE; | 40 virtual bool OnMessageReceived(const Message& message) OVERRIDE; |
41 | 41 |
42 protected: | 42 protected: |
43 virtual ~SyncMessageFilter(); | 43 virtual ~SyncMessageFilter(); |
44 | 44 |
45 private: | 45 private: |
46 void SendOnIOThread(Message* message); | 46 void SendOnIOThread(Message* message); |
(...skipping 16 matching lines...) Expand all Loading... |
63 base::Lock lock_; | 63 base::Lock lock_; |
64 | 64 |
65 base::WaitableEvent* shutdown_event_; | 65 base::WaitableEvent* shutdown_event_; |
66 | 66 |
67 DISALLOW_COPY_AND_ASSIGN(SyncMessageFilter); | 67 DISALLOW_COPY_AND_ASSIGN(SyncMessageFilter); |
68 }; | 68 }; |
69 | 69 |
70 } // namespace IPC | 70 } // namespace IPC |
71 | 71 |
72 #endif // IPC_IPC_SYNC_MESSAGE_FILTER_H_ | 72 #endif // IPC_IPC_SYNC_MESSAGE_FILTER_H_ |
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