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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_CHANNEL_H_ | 5 #ifndef IPC_IPC_SYNC_CHANNEL_H_ |
6 #define IPC_IPC_SYNC_CHANNEL_H_ | 6 #define IPC_IPC_SYNC_CHANNEL_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 #include <deque> | 9 #include <deque> |
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 "base/synchronization/waitable_event_watcher.h" | 14 #include "base/synchronization/waitable_event_watcher.h" |
15 #include "ipc/ipc_channel_handle.h" | 15 #include "ipc/ipc_channel_handle.h" |
16 #include "ipc/ipc_channel_proxy.h" | 16 #include "ipc/ipc_channel_proxy.h" |
17 #include "ipc/ipc_sync_message.h" | 17 #include "ipc/ipc_sync_message.h" |
| 18 #include "ipc/ipc_sync_message_filter.h" |
18 | 19 |
19 namespace base { | 20 namespace base { |
20 class WaitableEvent; | 21 class WaitableEvent; |
21 }; | 22 }; |
22 | 23 |
23 namespace IPC { | 24 namespace IPC { |
24 | 25 |
25 class SyncMessage; | 26 class SyncMessage; |
26 class ChannelFactory; | 27 class ChannelFactory; |
27 | 28 |
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109 // some cases where such loops are not possible. This flags allows the tagging | 110 // some cases where such loops are not possible. This flags allows the tagging |
110 // of some particular channels to only re-enter in known correct cases. | 111 // of some particular channels to only re-enter in known correct cases. |
111 // | 112 // |
112 // Incoming messages on channels belonging to a group that is not | 113 // Incoming messages on channels belonging to a group that is not |
113 // kRestrictDispatchGroup_None will only be dispatched while a sync message is | 114 // kRestrictDispatchGroup_None will only be dispatched while a sync message is |
114 // being sent on a channel of the *same* group. | 115 // being sent on a channel of the *same* group. |
115 // Incoming messages belonging to the kRestrictDispatchGroup_None group (the | 116 // Incoming messages belonging to the kRestrictDispatchGroup_None group (the |
116 // default) will be dispatched in any case. | 117 // default) will be dispatched in any case. |
117 void SetRestrictDispatchChannelGroup(int group); | 118 void SetRestrictDispatchChannelGroup(int group); |
118 | 119 |
| 120 // Creates a new IPC::SyncMessageFilter and adds it to this SyncChannel. |
| 121 // This should be used instead of directly constructing a new |
| 122 // SyncMessageFilter. |
| 123 scoped_refptr<IPC::SyncMessageFilter> CreateSyncMessageFilter(); |
| 124 |
119 protected: | 125 protected: |
120 class ReceivedSyncMsgQueue; | 126 class ReceivedSyncMsgQueue; |
121 friend class ReceivedSyncMsgQueue; | 127 friend class ReceivedSyncMsgQueue; |
122 | 128 |
123 // SyncContext holds the per object data for SyncChannel, so that SyncChannel | 129 // SyncContext holds the per object data for SyncChannel, so that SyncChannel |
124 // can be deleted while it's being used in a different thread. See | 130 // can be deleted while it's being used in a different thread. See |
125 // ChannelProxy::Context for more information. | 131 // ChannelProxy::Context for more information. |
126 class SyncContext : public Context { | 132 class SyncContext : public Context { |
127 public: | 133 public: |
128 SyncContext( | 134 SyncContext( |
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230 // Used to signal events between the IPC and listener threads. | 236 // Used to signal events between the IPC and listener threads. |
231 base::WaitableEventWatcher dispatch_watcher_; | 237 base::WaitableEventWatcher dispatch_watcher_; |
232 base::WaitableEventWatcher::EventCallback dispatch_watcher_callback_; | 238 base::WaitableEventWatcher::EventCallback dispatch_watcher_callback_; |
233 | 239 |
234 DISALLOW_COPY_AND_ASSIGN(SyncChannel); | 240 DISALLOW_COPY_AND_ASSIGN(SyncChannel); |
235 }; | 241 }; |
236 | 242 |
237 } // namespace IPC | 243 } // namespace IPC |
238 | 244 |
239 #endif // IPC_IPC_SYNC_CHANNEL_H_ | 245 #endif // IPC_IPC_SYNC_CHANNEL_H_ |
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