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
3 // found in the LICENSE file.
5 #ifndef IPC_IPC_CHANNEL_HANDLE_H_
6 #define IPC_IPC_CHANNEL_HANDLE_H_
11 #include "build/build_config.h"
14 #include "base/file_descriptor_posix.h"
17 // On Windows, any process can create an IPC channel and others can fetch
18 // it by name. We pass around the channel names over IPC.
19 // On POSIX, we instead pass around handles to channel endpoints via IPC.
20 // When it's time to IPC a new channel endpoint around, we send both the
21 // channel name as well as a base::FileDescriptor, which is itself a special
22 // type that knows how to copy a socket endpoint over IPC.
24 // In sum, when passing a handle to a channel over IPC, use this data structure
25 // to work on both Windows and POSIX.
29 struct ChannelHandle {
30 // Note that serialization for this object is defined in the ParamTraits
31 // template specialization in ipc_message_utils.h.
33 // The name that is passed in should be an absolute path for Posix.
34 // Otherwise there may be a problem in IPC communication between
35 // processes with different working directories.
36 ChannelHandle(const std::string& n) : name(n) {}
37 ChannelHandle(const char* n) : name(n) {}
39 ChannelHandle(const std::string& n, const base::FileDescriptor& s)
40 : name(n), socket(s) {}
41 #endif // defined(OS_POSIX)
45 base::FileDescriptor socket;
46 #endif // defined(OS_POSIX)
52 #endif // IPC_IPC_CHANNEL_HANDLE_H_