1 /* Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
27 /* Get common definition of System V style IPC. */
30 /* Get system dependent definition of `struct semid_ds' and more. */
33 /* The following System V style IPC functions implement a semaphore
34 handling. The definition is found in XPG2. */
36 /* Structure used for argument to `semop' to describe operations. */
39 unsigned short int sem_num
; /* semaphore number */
40 short int sem_op
; /* semaphore operation */
41 short int sem_flg
; /* operation flag */
47 /* Semaphore control operation. */
48 extern int semctl (int __semid
, int __semnum
, int __cmd
, ...) __THROW
;
51 extern int semget (key_t __key
, int __nsems
, int __semflg
) __THROW
;
53 /* Operate on semaphore. */
54 extern int semop (int __semid
, struct sembuf
*__sops
, size_t __nsops
) __THROW
;
58 #endif /* sys/sem.h */