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Side by Side Diff: ipc/ipc_channel.h

Issue 7633042: Create ipc.dll. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 4 months ago
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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_CHANNEL_H_ 5 #ifndef IPC_IPC_CHANNEL_H_
6 #define IPC_IPC_CHANNEL_H_ 6 #define IPC_IPC_CHANNEL_H_
7 #pragma once 7 #pragma once
8 8
9 #include "base/compiler_specific.h" 9 #include "base/compiler_specific.h"
10 #include "ipc/ipc_channel_handle.h" 10 #include "ipc/ipc_channel_handle.h"
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22 // On Windows we access pipes in various processes by name. 22 // On Windows we access pipes in various processes by name.
23 // On POSIX we pass file descriptors to child processes and assign names to them 23 // On POSIX we pass file descriptors to child processes and assign names to them
24 // in a lookup table. 24 // in a lookup table.
25 // In general on POSIX we do not use unix domain sockets due to security 25 // In general on POSIX we do not use unix domain sockets due to security
26 // concerns and the fact that they can leave garbage around the file system 26 // concerns and the fact that they can leave garbage around the file system
27 // (MacOS does not support abstract named unix domain sockets). 27 // (MacOS does not support abstract named unix domain sockets).
28 // You can use unix domain sockets if you like on POSIX by constructing the 28 // You can use unix domain sockets if you like on POSIX by constructing the
29 // the channel with the mode set to one of the NAMED modes. NAMED modes are 29 // the channel with the mode set to one of the NAMED modes. NAMED modes are
30 // currently used by automation and service processes. 30 // currently used by automation and service processes.
31 31
32 class Channel : public Message::Sender { 32 class IPC_EXPORT Channel : public Message::Sender {
33 // Security tests need access to the pipe handle. 33 // Security tests need access to the pipe handle.
34 friend class ChannelTest; 34 friend class ChannelTest;
35 35
36 public: 36 public:
37 // Implemented by consumers of a Channel to receive messages. 37 // Implemented by consumers of a Channel to receive messages.
38 class Listener { 38 class IPC_EXPORT Listener {
39 public: 39 public:
40 virtual ~Listener() {} 40 virtual ~Listener() {}
41 41
42 // Called when a message is received. Returns true iff the message was 42 // Called when a message is received. Returns true iff the message was
43 // handled. 43 // handled.
44 virtual bool OnMessageReceived(const Message& message) = 0; 44 virtual bool OnMessageReceived(const Message& message) = 0;
45 45
46 // Called when the channel is connected and we have received the internal 46 // Called when the channel is connected and we have received the internal
47 // Hello message from the peer. 47 // Hello message from the peer.
48 virtual void OnChannelConnected(int32 peer_pid) {} 48 virtual void OnChannelConnected(int32 peer_pid) {}
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195 HELLO_MESSAGE_TYPE = kuint16max // Maximum value of message type (uint16), 195 HELLO_MESSAGE_TYPE = kuint16max // Maximum value of message type (uint16),
196 // to avoid conflicting with normal 196 // to avoid conflicting with normal
197 // message types, which are enumeration 197 // message types, which are enumeration
198 // constants starting from 0. 198 // constants starting from 0.
199 }; 199 };
200 }; 200 };
201 201
202 } // namespace IPC 202 } // namespace IPC
203 203
204 #endif // IPC_IPC_CHANNEL_H_ 204 #endif // IPC_IPC_CHANNEL_H_
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