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| 1 | /* Semaphore type. Generic version. |
|---|---|
| 2 | Copyright (C) 2005-2022 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <https://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef _BITS_SEMAPHORE_H |
| 20 | #define _BITS_SEMAPHORE_H 1 |
| 21 | |
| 22 | #ifndef _SEMAPHORE_H |
| 23 | # error Never include <bits/semaphore.h> directly. |
| 24 | #endif |
| 25 | |
| 26 | #include <bits/types/__pthread_spinlock_t.h> |
| 27 | #include <bits/pthread.h> |
| 28 | |
| 29 | /* User visible part of a semaphore. */ |
| 30 | |
| 31 | #define __SIZEOF_SEM_T 20 |
| 32 | |
| 33 | typedef union |
| 34 | { |
| 35 | char __size[__SIZEOF_SEM_T]; |
| 36 | long int __align; |
| 37 | } sem_t; |
| 38 | |
| 39 | #define SEM_FAILED ((void *) 0) |
| 40 | |
| 41 | #endif /* bits/semaphore.h */ |
| 42 |
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