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1 // Copyright (c) 2006-2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2009 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 BASE_FILE_DESCRIPTOR_POSIX_H_ | 5 #ifndef BASE_FILE_DESCRIPTOR_POSIX_H_ |
6 #define BASE_FILE_DESCRIPTOR_POSIX_H_ | 6 #define BASE_FILE_DESCRIPTOR_POSIX_H_ |
7 | 7 |
8 namespace base { | 8 namespace base { |
9 | 9 |
10 // ----------------------------------------------------------------------------- | 10 // ----------------------------------------------------------------------------- |
11 // We introduct a special structure for file descriptors in order that we are | 11 // We introduct a special structure for file descriptors in order that we are |
12 // able to use template specialisation to special-case their handling. | 12 // able to use template specialisation to special-case their handling. |
13 // | 13 // |
14 // WARNING: (Chromium only) There are subtleties to consider if serialising | 14 // WARNING: (Chromium only) There are subtleties to consider if serialising |
15 // these objects over IPC. See comments in ipc/ipc_message_utils.h | 15 // these objects over IPC. See comments in ipc/ipc_message_utils.h |
16 // above the template specialisation for this structure. | 16 // above the template specialisation for this structure. |
17 // ----------------------------------------------------------------------------- | 17 // ----------------------------------------------------------------------------- |
18 struct FileDescriptor { | 18 struct FileDescriptor { |
19 FileDescriptor() | 19 FileDescriptor() |
20 : fd(-1), | 20 : fd(-1), |
21 auto_close(false) { } | 21 auto_close(false) { } |
22 | 22 |
23 FileDescriptor(int ifd, bool iauto_close) | 23 FileDescriptor(int ifd, bool iauto_close) |
24 : fd(ifd), | 24 : fd(ifd), |
25 auto_close(iauto_close) { } | 25 auto_close(iauto_close) { } |
26 | 26 |
| 27 bool operator==(const FileDescriptor& other) const { |
| 28 return (fd == other.fd && auto_close == other.auto_close); |
| 29 } |
| 30 |
| 31 // A comparison operator so that we can use these as keys in a std::map. |
| 32 bool operator<(const FileDescriptor& other) const { |
| 33 return other.fd < fd; |
| 34 } |
| 35 |
27 int fd; | 36 int fd; |
28 // If true, this file descriptor should be closed after it has been used. For | 37 // If true, this file descriptor should be closed after it has been used. For |
29 // example an IPC system might interpret this flag as indicating that the | 38 // example an IPC system might interpret this flag as indicating that the |
30 // file descriptor it has been given should be closed after use. | 39 // file descriptor it has been given should be closed after use. |
31 bool auto_close; | 40 bool auto_close; |
32 }; | 41 }; |
33 | 42 |
34 } // namespace base | 43 } // namespace base |
35 | 44 |
36 #endif // BASE_FILE_DESCRIPTOR_POSIX_H_ | 45 #endif // BASE_FILE_DESCRIPTOR_POSIX_H_ |
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