diff options
author | Eric Andersen <andersen@codepoet.org> | 2001-03-19 21:51:29 +0000 |
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committer | Eric Andersen <andersen@codepoet.org> | 2001-03-19 21:51:29 +0000 |
commit | 91a034c61a32ebd6601fb8b894127d43b817f5fc (patch) | |
tree | 9f8cf05b7a61fe9d51651d4476dafc9235cc1552 /include/sys/sem.h | |
parent | d777bf75160493485c76754012735e911fbde5e1 (diff) |
Add in the sysvipc patch from Michael Shmulevich
Diffstat (limited to 'include/sys/sem.h')
-rw-r--r-- | include/sys/sem.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/include/sys/sem.h b/include/sys/sem.h new file mode 100644 index 000000000..6ae76e234 --- /dev/null +++ b/include/sys/sem.h @@ -0,0 +1,58 @@ +/* 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 */ |