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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 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <set> | 9 #include <set> |
10 | 10 |
11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
12 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
13 #include "base/synchronization/lock.h" | 13 #include "base/synchronization/lock.h" |
14 #include "ipc/ipc_channel_proxy.h" | 14 #include "ipc/ipc_channel_proxy.h" |
15 #include "ipc/ipc_sync_message.h" | 15 #include "ipc/ipc_sync_message.h" |
16 | 16 |
17 namespace base { | 17 namespace base { |
18 class MessageLoopProxy; | 18 class MessageLoopProxy; |
19 class WaitableEvent; | 19 class WaitableEvent; |
20 } | 20 } |
21 | 21 |
22 namespace IPC { | 22 namespace IPC { |
23 | 23 |
24 // This MessageFilter allows sending synchronous IPC messages from a thread | 24 // This MessageFilter allows sending synchronous IPC messages from a thread |
25 // 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 |
26 // support fancy features that SyncChannel does, such as handling recursion or | 26 // support fancy features that SyncChannel does, such as handling recursion or |
27 // 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 |
28 // be used to send simultaneous synchronous messages from different threads. | 28 // be used to send simultaneous synchronous messages from different threads. |
29 class IPC_EXPORT SyncMessageFilter : public ChannelProxy::MessageFilter, | 29 class IPC_EXPORT SyncMessageFilter : public ChannelProxy::MessageFilter, |
30 public Message::Sender { | 30 public Sender { |
31 public: | 31 public: |
32 explicit SyncMessageFilter(base::WaitableEvent* shutdown_event); | 32 explicit SyncMessageFilter(base::WaitableEvent* shutdown_event); |
33 | 33 |
34 // Message::Sender implementation. | 34 // MessageSender implementation. |
35 virtual bool Send(Message* message) OVERRIDE; | 35 virtual bool Send(Message* message) OVERRIDE; |
36 | 36 |
37 // ChannelProxy::MessageFilter implementation. | 37 // ChannelProxy::MessageFilter implementation. |
38 virtual void OnFilterAdded(Channel* channel) OVERRIDE; | 38 virtual void OnFilterAdded(Channel* channel) OVERRIDE; |
39 virtual void OnChannelError() OVERRIDE; | 39 virtual void OnChannelError() OVERRIDE; |
40 virtual void OnChannelClosing() OVERRIDE; | 40 virtual void OnChannelClosing() OVERRIDE; |
41 virtual bool OnMessageReceived(const Message& message) OVERRIDE; | 41 virtual bool OnMessageReceived(const Message& message) OVERRIDE; |
42 | 42 |
43 protected: | 43 protected: |
44 virtual ~SyncMessageFilter(); | 44 virtual ~SyncMessageFilter(); |
(...skipping 19 matching lines...) Expand all Loading... |
64 base::Lock lock_; | 64 base::Lock lock_; |
65 | 65 |
66 base::WaitableEvent* shutdown_event_; | 66 base::WaitableEvent* shutdown_event_; |
67 | 67 |
68 DISALLOW_COPY_AND_ASSIGN(SyncMessageFilter); | 68 DISALLOW_COPY_AND_ASSIGN(SyncMessageFilter); |
69 }; | 69 }; |
70 | 70 |
71 } // namespace IPC | 71 } // namespace IPC |
72 | 72 |
73 #endif // IPC_IPC_SYNC_MESSAGE_FILTER_H_ | 73 #endif // IPC_IPC_SYNC_MESSAGE_FILTER_H_ |
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