1/* Copyright (C) 2002, 2004 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#include <bits/wordsize.h>
25
26#if __WORDSIZE == 64
27# define __SIZEOF_SEM_T	32
28#else
29# define __SIZEOF_SEM_T	16
30#endif
31
32
33/* Value returned if `sem_open' failed.  */
34#define SEM_FAILED      ((sem_t *) 0)
35
36
37typedef union
38{
39  char __size[__SIZEOF_SEM_T];
40  long int __align;
41} sem_t;
42