mirror of
https://github.com/reactos/reactos.git
synced 2024-10-31 11:56:26 +00:00
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
|
/* $Id: sem.h,v 1.5 2002/10/29 04:45:21 rex Exp $
|
||
|
|
*/
|
||
|
|
/*
|
||
|
|
* sys/sem.h
|
||
|
|
*
|
||
|
|
* semaphore facility. Conforming to the Single UNIX(r) Specification
|
||
|
|
* Version 2, System Interface & Headers Issue 5
|
||
|
|
*
|
||
|
|
* This file is part of the ReactOS Operating System.
|
||
|
|
*
|
||
|
|
* Contributors:
|
||
|
|
* Created by KJK::Hyperion <noog@libero.it>
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS NOT COPYRIGHTED
|
||
|
|
*
|
||
|
|
* This source code is offered for use in the public domain. You may
|
||
|
|
* use, modify or distribute it freely.
|
||
|
|
*
|
||
|
|
* This code is distributed in the hope that it will be useful but
|
||
|
|
* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
|
||
|
|
* DISCLAMED. This includes but is not limited to warranties of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
#ifndef __SYS_SEM_H_INCLUDED__
|
||
|
|
#define __SYS_SEM_H_INCLUDED__
|
||
|
|
|
||
|
|
/* INCLUDES */
|
||
|
|
#include <sys/ipc.h>
|
||
|
|
|
||
|
|
/* OBJECTS */
|
||
|
|
|
||
|
|
/* TYPES */
|
||
|
|
struct semid_ds
|
||
|
|
{
|
||
|
|
struct ipc_perm sem_perm; /* operation permission structure */
|
||
|
|
unsigned short int sem_nsems; /* number of semaphores in set */
|
||
|
|
time_t sem_otime; /* last semop time */
|
||
|
|
time_t sem_ctime; /* last time changed by semctl() */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct sembuf
|
||
|
|
{
|
||
|
|
unsigned short int sem_num; /* semaphore number */
|
||
|
|
short int sem_op; /* semaphore operation */
|
||
|
|
short int sem_flg; /* operation flags */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* CONSTANTS */
|
||
|
|
/* Semaphore operation flags */
|
||
|
|
#define SEM_UNDO (0x00001000) /* Set up adjust on exit entry */
|
||
|
|
|
||
|
|
/* Command definitions for the function semctl() */
|
||
|
|
#define GETNCNT (1) /* Get semncnt */
|
||
|
|
#define GETPID (2) /* Get sempid */
|
||
|
|
#define GETVAL (3) /* Get semval */
|
||
|
|
#define GETALL (4) /* Get all cases of semval */
|
||
|
|
#define GETZCNT (5) /* Get semzcnt */
|
||
|
|
#define SETVAL (6) /* Set semval */
|
||
|
|
#define SETALL (7) /* Set all cases of semval */
|
||
|
|
|
||
|
|
/* PROTOTYPES */
|
||
|
|
int semctl(int, int, int, ...);
|
||
|
|
int semget(key_t, int, int);
|
||
|
|
int semop(int, struct sembuf *, size_t);
|
||
|
|
|
||
|
|
/* MACROS */
|
||
|
|
|
||
|
|
#endif /* __SYS_SEM_H_INCLUDED__ */
|
||
|
|
|
||
|
|
/* EOF */
|
||
|
|
|