mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-20 03:50:07 +00:00
59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/* Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifndef _SYS_SEM_H
|
|
#define _SYS_SEM_H 1
|
|
|
|
#include <features.h>
|
|
|
|
#include <sys/types.h>
|
|
|
|
/* Get common definition of System V style IPC. */
|
|
#include <sys/ipc.h>
|
|
|
|
/* Get system dependent definition of `struct semid_ds' and more. */
|
|
#include <bits/sem.h>
|
|
|
|
/* The following System V style IPC functions implement a semaphore
|
|
handling. The definition is found in XPG2. */
|
|
|
|
/* Structure used for argument to `semop' to describe operations. */
|
|
struct sembuf
|
|
{
|
|
short int sem_num; /* semaphore number */
|
|
short int sem_op; /* semaphore operation */
|
|
short int sem_flg; /* operation flag */
|
|
};
|
|
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/* Semaphore control operation. */
|
|
extern int semctl __P ((int __semid, int __semnum, int __cmd, ...));
|
|
|
|
/* Get semaphore. */
|
|
extern int semget __P ((key_t __key, int __nsems, int __semflg));
|
|
|
|
/* Operate on semaphore. */
|
|
extern int semop __P ((int __semid, struct sembuf *__sops,
|
|
unsigned int __nsops));
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* sys/sem.h */
|