| 1 |
2 |
drasko |
/* Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
|
| 2 |
|
|
This file is part of the GNU C Library.
|
| 3 |
|
|
|
| 4 |
|
|
The GNU C Library is free software; you can redistribute it and/or
|
| 5 |
|
|
modify it under the terms of the GNU Lesser General Public
|
| 6 |
|
|
License as published by the Free Software Foundation; either
|
| 7 |
|
|
version 2.1 of the License, or (at your option) any later version.
|
| 8 |
|
|
|
| 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 |
|
|
Lesser General Public License for more details.
|
| 13 |
|
|
|
| 14 |
|
|
You should have received a copy of the GNU Lesser General Public
|
| 15 |
|
|
License along with the GNU C Library; if not, write to the Free
|
| 16 |
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
| 17 |
|
|
02111-1307 USA. */
|
| 18 |
|
|
|
| 19 |
|
|
#ifndef _SYS_SEM_H
|
| 20 |
|
|
# error "Never include <bits/sem.h> directly; use <sys/sem.h> instead."
|
| 21 |
|
|
#endif
|
| 22 |
|
|
|
| 23 |
|
|
#include <sys/types.h>
|
| 24 |
|
|
|
| 25 |
|
|
/* Flags for `semop'. */
|
| 26 |
|
|
#define SEM_UNDO 0x1000 /* undo the operation on exit */
|
| 27 |
|
|
|
| 28 |
|
|
/* Commands for `semctl'. */
|
| 29 |
|
|
#define GETPID 11 /* get sempid */
|
| 30 |
|
|
#define GETVAL 12 /* get semval */
|
| 31 |
|
|
#define GETALL 13 /* get all semval's */
|
| 32 |
|
|
#define GETNCNT 14 /* get semncnt */
|
| 33 |
|
|
#define GETZCNT 15 /* get semzcnt */
|
| 34 |
|
|
#define SETVAL 16 /* set semval */
|
| 35 |
|
|
#define SETALL 17 /* set all semval's */
|
| 36 |
|
|
|
| 37 |
|
|
|
| 38 |
|
|
/* Data structure describing a set of semaphores. */
|
| 39 |
|
|
struct semid_ds
|
| 40 |
|
|
{
|
| 41 |
|
|
struct ipc_perm sem_perm; /* operation permission struct */
|
| 42 |
|
|
__time_t sem_otime; /* last semop() time */
|
| 43 |
|
|
unsigned long int __unused1;
|
| 44 |
|
|
__time_t sem_ctime; /* last time changed by semctl() */
|
| 45 |
|
|
unsigned long int __unused2;
|
| 46 |
|
|
unsigned long int sem_nsems; /* number of semaphores in set */
|
| 47 |
|
|
unsigned long int __unused3;
|
| 48 |
|
|
unsigned long int __unused4;
|
| 49 |
|
|
};
|
| 50 |
|
|
|
| 51 |
|
|
/* The user should define a union like the following to use it for arguments
|
| 52 |
|
|
for `semctl'.
|
| 53 |
|
|
|
| 54 |
|
|
union semun
|
| 55 |
|
|
{
|
| 56 |
|
|
int val; <= value for SETVAL
|
| 57 |
|
|
struct semid_ds *buf; <= buffer for IPC_STAT & IPC_SET
|
| 58 |
|
|
unsigned short int *array; <= array for GETALL & SETALL
|
| 59 |
|
|
struct seminfo *__buf; <= buffer for IPC_INFO
|
| 60 |
|
|
};
|
| 61 |
|
|
|
| 62 |
|
|
Previous versions of this file used to define this union but this is
|
| 63 |
|
|
incorrect. One can test the macro _SEM_SEMUN_UNDEFINED to see whether
|
| 64 |
|
|
one must define the union or not. */
|
| 65 |
|
|
#define _SEM_SEMUN_UNDEFINED 1
|
| 66 |
|
|
|
| 67 |
|
|
#ifdef __USE_MISC
|
| 68 |
|
|
|
| 69 |
|
|
/* ipcs ctl cmds */
|
| 70 |
|
|
# define SEM_STAT 18
|
| 71 |
|
|
# define SEM_INFO 19
|
| 72 |
|
|
|
| 73 |
|
|
struct seminfo
|
| 74 |
|
|
{
|
| 75 |
|
|
int semmap;
|
| 76 |
|
|
int semmni;
|
| 77 |
|
|
int semmns;
|
| 78 |
|
|
int semmnu;
|
| 79 |
|
|
int semmsl;
|
| 80 |
|
|
int semopm;
|
| 81 |
|
|
int semume;
|
| 82 |
|
|
int semusz;
|
| 83 |
|
|
int semvmx;
|
| 84 |
|
|
int semaem;
|
| 85 |
|
|
};
|
| 86 |
|
|
|
| 87 |
|
|
#endif /* __USE_MISC */
|
