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Side by Side Diff: base/mp/message_router.h

Issue 1625015: Refactor ChildProcess and related classes to create a framework outside of br... (Closed) Base URL: http://src.chromium.org/svn/trunk/src/
Patch Set: Created 10 years, 8 months ago
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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2010 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 CHROME_COMMON_MESSAGE_ROUTER_H__ 5 #ifndef BASE_MP_MESSAGE_ROUTER_H__
6 #define CHROME_COMMON_MESSAGE_ROUTER_H__ 6 #define BASE_MP_MESSAGE_ROUTER_H__
7 7
8 #include "base/id_map.h" 8 #include "base/id_map.h"
9 #include "ipc/ipc_channel.h" 9 #include "ipc/ipc_channel.h"
10 10
11 namespace base {
12
11 // The MessageRouter handles all incoming messages sent to it by routing them 13 // The MessageRouter handles all incoming messages sent to it by routing them
12 // to the correct listener. Routing is based on the Message's routing ID. 14 // to the correct listener. Routing is based on the Message's routing ID.
13 // Since routing IDs are typically assigned asynchronously by the browser 15 // Since routing IDs are typically assigned asynchronously by the browser
14 // process, the MessageRouter has the notion of pending IDs for listeners that 16 // process, the MessageRouter has the notion of pending IDs for listeners that
15 // have not yet been assigned a routing ID. 17 // have not yet been assigned a routing ID.
16 // 18 //
17 // When a message arrives, the routing ID is used to index the set of routes to 19 // When a message arrives, the routing ID is used to index the set of routes to
18 // find a listener. If a listener is found, then the message is passed to it. 20 // find a listener. If a listener is found, then the message is passed to it.
19 // Otherwise, the message is ignored if its routing ID is not equal to 21 // Otherwise, the message is ignored if its routing ID is not equal to
20 // MSG_ROUTING_CONTROL. 22 // MSG_ROUTING_CONTROL.
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52 54
53 IPC::Channel::Listener* ResolveRoute(int32 routing_id); 55 IPC::Channel::Listener* ResolveRoute(int32 routing_id);
54 56
55 private: 57 private:
56 // A list of all listeners with assigned routing IDs. 58 // A list of all listeners with assigned routing IDs.
57 IDMap<IPC::Channel::Listener> routes_; 59 IDMap<IPC::Channel::Listener> routes_;
58 60
59 DISALLOW_COPY_AND_ASSIGN(MessageRouter); 61 DISALLOW_COPY_AND_ASSIGN(MessageRouter);
60 }; 62 };
61 63
62 #endif // CHROME_COMMON_MESSAGE_ROUTER_H__ 64 } // namespace base
65
66 #endif // BASE_MP_MESSAGE_ROUTER_H__
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