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[/] [or1k/] [trunk/] [linux/] [uClibc/] [include/] [sys/] [sem.h] - Blame information for rev 1771

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1 1325 phoenix
/* Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, write to the Free
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   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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   02111-1307 USA.  */
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#ifndef _SYS_SEM_H
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#define _SYS_SEM_H      1
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#include <features.h>
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#define __need_size_t
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#include <stddef.h>
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/* Get common definition of System V style IPC.  */
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#include <sys/ipc.h>
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/* Get system dependent definition of `struct semid_ds' and more.  */
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#include <bits/sem.h>
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/* The following System V style IPC functions implement a semaphore
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   handling.  The definition is found in XPG2.  */
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/* Structure used for argument to `semop' to describe operations.  */
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struct sembuf
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{
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  unsigned short int sem_num;   /* semaphore number */
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  short int sem_op;             /* semaphore operation */
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  short int sem_flg;            /* operation flag */
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};
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__BEGIN_DECLS
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/* Semaphore control operation.  */
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extern int semctl (int __semid, int __semnum, int __cmd, ...) __THROW;
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/* Get semaphore.  */
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extern int semget (key_t __key, int __nsems, int __semflg) __THROW;
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/* Operate on semaphore.  */
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extern int semop (int __semid, struct sembuf *__sops, size_t __nsops) __THROW;
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__END_DECLS
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#endif /* sys/sem.h */

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