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#ifndef WNT
#ifdef HAVE_CONFIG_H
# include <oce-config.h>
#endif
#include <errno.h>
#include <stdio.h>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_IPC_H
#include <sys/ipc.h>
#endif
#ifdef HAVE_SYS_SEM_H
# include <sys/sem.h>
#endif
#ifdef HAVE_SIGNAL_H
# include <signal.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
/* Modified by Stephan GARNAUD (ARM) 1992 for Matra Datavision */
#if (!defined (__hpux)) && (!defined (HPUX))
#define CLUSTER_NUMBER 4
#define SIGUSER SIGUSR1-1
static struct sembuf event_flag ;
static void osd_signal_(int);
int osd_getkey(char *);
#ifdef ANSI
int create_semaphore(char *);
int open_semaphore(char *);
int lock_semaphore(int *,int *);
int free_semaphore(int *,int *);
int reset_semaphore(int *,int *);
int remove_semaphore(int *,char *);
int osd_signl_(int *);
int osd_skill_(int *,int *);
int osd_alarm_(int,void (*)());
#endif
static void
osd_signal_(int i )
{
}
int
create_semaphore(char *name)
/*=======================================================
CREATE a semaphore cluster of 32 events
=========================================================*/
{
int status ;
key_t key;
key = (key_t) osd_getkey (name);
status = semget(key,CLUSTER_NUMBER,0750 + IPC_CREAT) ;
if( status < 0 ) return (0) ; /* semget failed */
return status ;
}
int
open_semaphore(char *name)
/*=========================================================
OPEN a semaphore cluster
=========================================================================*/
{
int status ;
key_t key;
key = (key_t) osd_getkey (name);
status = semget(key,0,0) ;
if( status < 0 ) return (0) ; /* semget failed */
else return status;
}
int
lock_semaphore(int *semid, int *event)
/*==================================================
WAIT & LOCK the semaphore attached to the cluster
====================================================*/
{
int status ;
event_flag.sem_num = *event ;
event_flag.sem_op = -1 ;
event_flag.sem_flg = SEM_UNDO;
do
#if defined(SEMOP_NO_REFERENCE) && !defined(DECOSF1)
status = semop(*semid,event_flag,1) ;
#else
status = semop(*semid,&event_flag,1) ;
#endif
while ( status < 0 && errno != EINTR );
if( status < 0 )
return (0) ;
else
return (1) ;
}
int
free_semaphore(int *semid, int *event)
/*==================================================
FREE the semaphore attached to the cluster
====================================================*/
{
int status ;
int zero_value = 0;
event_flag.sem_num = *event ;
event_flag.sem_op = 1 ;
event_flag.sem_flg = IPC_NOWAIT ;
#ifdef SEMCTL_NO_REFERENCE
status = semctl(*semid,*event,GETVAL,zero_value);
#else
status = semctl(*semid,*event,GETVAL,&zero_value);
#endif
if (status !=1)
#if defined(SEMOP_NO_REFERENCE) && !defined(DECOSF1)
status = semop(*semid,event_flag,1) ;
#else
status = semop(*semid,&event_flag,1) ;
#endif
else return 0;
if( status < 0 )
return (0) ;
else
return (1) ;
}
int
reset_semaphore(int *semid, int *event)
/*===================================================
RESET semaphore to initial state
======================================================*/
{
int status;
int zero_value=0;
#ifdef SEMCTL_NO_REFERENCE
status = semctl(*semid,*event,SETVAL,zero_value);
#else
status = semctl(*semid,*event,SETVAL,&zero_value);
#endif
if (status < 0) return(0);
else return(1);
}
int
set_semaphore(int *semid, int *event, int value)
/*=================================================
SET semaphore counter to a fixed value
====================================================*/
{
int status;
#ifdef SEMCTL_NO_REFERENCE
status = semctl((*semid),*event,SETVAL,value);
#else
status = semctl((*semid),*event,SETVAL,&value);
#endif
if (status < 0) return(0);
else return(1);
}
int
get_semaphore(int *semid, int *event, int *value)
/*=================================================
GET semaphore counter value
==========================================================================*/
{
int status;
#ifdef SEMCTL_NO_REFERENCE
status = semctl((*semid),*event,GETVAL,value);
#else
status = semctl((*semid),*event,GETVAL,&value);
#endif
if (status < 0) return(0);
else return(1);
}
int
remove_semaphore(int *semid, char *name)
/*======================================================
CLOSE semaphore attached to cluster
=============================================================================*/
{
int status;
/* status = semctl(*semid,IPC_RMID,NULL);*/
status = semctl(*semid,IPC_RMID,0);
if (status < 0) return 0;
else return 1;
}
int
osd_signl_(int *event)
/*====================================================
ARM the SIGNAL event (Must be 1 or 2 )
And WAIT after it was KILLED
=======================================================*/
{
signal(SIGUSER + *event , osd_signal_) ;
pause() ;
return (1) ;
}
int
osd_skill_(int *pid, int *event)
/*==================================================
SEND a SIGNAL to the PROCESS ID specified
====================================================*/
{
if( kill( *pid , SIGUSER + *event ) < 0 ) return (0) ;
return (1) ;
}
int
osd_alarm_(int sec, void (*_alarm)())
/*====================================================
ARM the SIGNAL event (Must be 1 or 2 )
And WAIT after it was KILLED
==========================================================================*/
{
signal(SIGALRM, _alarm) ;
alarm(sec) ;
return (1) ;
}
#endif /* __hpux */
#endif /* WNT */
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