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1 | /* Copyright (C) 2002 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. | |
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, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
19 | ||
20 | #ifndef _SEMAPHORE_H | |
21 | # error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead." | |
22 | #endif | |
23 | ||
24 | ||
25 | #define __SIZEOF_SEM_T 16 | |
26 | ||
27 | ||
28 | /* Value returned if `sem_open' failed. */ | |
29 | #define SEM_FAILED ((sem_t *) 0) | |
30 | ||
32c075e1 JJ |
31 | /* Maximum value the semaphore can have. */ |
32 | #define SEM_VALUE_MAX (2147483647) | |
33 | ||
76a50749 UD |
34 | |
35 | typedef union | |
36 | { | |
37 | char __size[__SIZEOF_SEM_T]; | |
38 | long int __align; | |
39 | } sem_t; |