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, see
17    <http://www.gnu.org/licenses/>.  */
18 
19 #ifndef _SEMAPHORE_H
20 # error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
21 #endif
22 
23 
24 #define __SIZEOF_SEM_T	16
25 
26 
27 /* Value returned if `sem_open' failed.  */
28 #define SEM_FAILED      ((sem_t *) 0)
29 
30 
31 typedef union
32 {
33   char __size[__SIZEOF_SEM_T];
34   long int __align;
35 } sem_t;
36