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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 // This provides a wrapper around system calls which may be interrupted by a | 5 // This provides a wrapper around system calls which may be interrupted by a |
6 // signal and return EINTR. See man 7 signal. | 6 // signal and return EINTR. See man 7 signal. |
7 // | 7 // |
8 // On Windows, this wrapper macro does nothing. | 8 // On Windows, this wrapper macro does nothing. |
9 | 9 |
10 #ifndef BASE_EINTR_WRAPPER_H_ | 10 #ifndef BASE_POSIX_EINTR_WRAPPER_H_ |
11 #define BASE_EINTR_WRAPPER_H_ | 11 #define BASE_POSIX_EINTR_WRAPPER_H_ |
12 | 12 |
13 #include "build/build_config.h" | 13 #include "build/build_config.h" |
14 | 14 |
15 #if defined(OS_POSIX) | 15 #if defined(OS_POSIX) |
16 | 16 |
17 #include <errno.h> | 17 #include <errno.h> |
18 | 18 |
19 #define HANDLE_EINTR(x) ({ \ | 19 #define HANDLE_EINTR(x) ({ \ |
20 typeof(x) __eintr_result__; \ | 20 typeof(x) __eintr_result__; \ |
21 do { \ | 21 do { \ |
22 __eintr_result__ = (x); \ | 22 __eintr_result__ = (x); \ |
23 } while (__eintr_result__ == -1 && errno == EINTR); \ | 23 } while (__eintr_result__ == -1 && errno == EINTR); \ |
24 __eintr_result__;\ | 24 __eintr_result__;\ |
25 }) | 25 }) |
26 | 26 |
27 #else | 27 #else |
28 | 28 |
29 #define HANDLE_EINTR(x) (x) | 29 #define HANDLE_EINTR(x) (x) |
30 | 30 |
31 #endif // OS_POSIX | 31 #endif // OS_POSIX |
32 | 32 |
33 #endif // BASE_EINTR_WRAPPER_H_ | 33 #endif // BASE_POSIX_EINTR_WRAPPER_H_ |
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