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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CHROME_COMMON_IPC_CHANNEL_HANDLE_H_ | |
6 #define CHROME_COMMON_IPC_CHANNEL_HANDLE_H_ | |
7 | |
8 #include "build/build_config.h" | |
9 | |
10 #if defined(OS_POSIX) | |
11 #include "base/file_descriptor_posix.h" | |
12 #endif | |
13 | |
14 // On Windows, any process can create an IPC channel and others can fetch | |
15 // it by name. We pass around the channel names over IPC. | |
16 // On POSIX, we instead pass around handles to channel endpoints via IPC. | |
17 // When it's time to IPC a new channel endpoint around, we send both the | |
18 // channel name as well as a base::FileDescriptor, which is itself a special | |
19 // type that knows how to copy a socket endpoint over IPC. | |
20 // | |
21 // In sum, when passing a handle to a channel over IPC, use this data structure | |
22 // to work on both Windows and POSIX. | |
23 | |
24 namespace IPC { | |
25 | |
26 struct ChannelHandle { | |
27 // Note that serialization for this object is defined in the ParamTraits | |
28 // template specialization in ipc_message_utils.h. | |
29 std::string name; | |
30 #if defined(OS_POSIX) | |
31 base::FileDescriptor socket; | |
32 #endif | |
33 | |
34 ChannelHandle() {} | |
35 #if defined(OS_POSIX) | |
36 ChannelHandle(const std::string& n, const base::FileDescriptor& s) | |
37 : name(n), socket(s) {} | |
38 #else | |
39 ChannelHandle(const std::string& n) : name(n) {} | |
40 #endif | |
41 }; | |
42 | |
43 } // namespace IPC | |
44 | |
45 #endif // CHROME_COMMON_IPC_CHANNEL_HANDLE_H_ | |
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