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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 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 "base/basictypes.h" | 9 #include "base/basictypes.h" |
10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
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21 | 21 |
22 namespace IPC { | 22 namespace IPC { |
23 | 23 |
24 class MessageReplyDeserializer; | 24 class MessageReplyDeserializer; |
25 | 25 |
26 // This MessageFilter allows sending synchronous IPC messages from a thread | 26 // This MessageFilter allows sending synchronous IPC messages from a thread |
27 // other than the listener thread associated with the SyncChannel. It does not | 27 // other than the listener thread associated with the SyncChannel. It does not |
28 // support fancy features that SyncChannel does, such as handling recursion or | 28 // support fancy features that SyncChannel does, such as handling recursion or |
29 // receiving messages while waiting for a response. Note that this object can | 29 // receiving messages while waiting for a response. Note that this object can |
30 // be used to send simultaneous synchronous messages from different threads. | 30 // be used to send simultaneous synchronous messages from different threads. |
31 class SyncMessageFilter : public ChannelProxy::MessageFilter, | 31 class IPC_EXPORT SyncMessageFilter : public ChannelProxy::MessageFilter, |
32 public Message::Sender { | 32 public Message::Sender { |
33 public: | 33 public: |
34 explicit SyncMessageFilter(base::WaitableEvent* shutdown_event); | 34 explicit SyncMessageFilter(base::WaitableEvent* shutdown_event); |
35 virtual ~SyncMessageFilter(); | 35 virtual ~SyncMessageFilter(); |
36 | 36 |
37 // Message::Sender implementation. | 37 // Message::Sender implementation. |
38 virtual bool Send(Message* message); | 38 virtual bool Send(Message* message); |
39 | 39 |
40 // ChannelProxy::MessageFilter implementation. | 40 // ChannelProxy::MessageFilter implementation. |
41 virtual void OnFilterAdded(Channel* channel); | 41 virtual void OnFilterAdded(Channel* channel); |
42 virtual void OnChannelError(); | 42 virtual void OnChannelError(); |
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61 base::Lock lock_; | 61 base::Lock lock_; |
62 | 62 |
63 base::WaitableEvent* shutdown_event_; | 63 base::WaitableEvent* shutdown_event_; |
64 | 64 |
65 DISALLOW_COPY_AND_ASSIGN(SyncMessageFilter); | 65 DISALLOW_COPY_AND_ASSIGN(SyncMessageFilter); |
66 }; | 66 }; |
67 | 67 |
68 } // namespace IPC | 68 } // namespace IPC |
69 | 69 |
70 #endif // IPC_IPC_SYNC_MESSAGE_FILTER_H_ | 70 #endif // IPC_IPC_SYNC_MESSAGE_FILTER_H_ |
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