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| 1 | /* Copyright (C) 2010-2024 Free Software Foundation, Inc. |
|---|---|
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library. If not, see |
| 16 | <https://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #ifndef _SEMAPHORE_H |
| 19 | # error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead." |
| 20 | #endif |
| 21 | |
| 22 | |
| 23 | #define __SIZEOF_SEM_T 16 |
| 24 | |
| 25 | |
| 26 | /* Value returned if `sem_open' failed. */ |
| 27 | #define SEM_FAILED ((sem_t *) 0) |
| 28 | |
| 29 | |
| 30 | typedef union |
| 31 | { |
| 32 | char __size[__SIZEOF_SEM_T]; |
| 33 | long int __align __attribute__ ((__aligned__ (4))); |
| 34 | } sem_t; |
| 35 |
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