44 lines
1.0 KiB
C
44 lines
1.0 KiB
C
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <sys/ipc.h>
|
|
#include <sys/shm.h>
|
|
#include "constantes.h"
|
|
#include "types.h"
|
|
#include "sema.h"
|
|
|
|
int main( int argc, char **argv)
|
|
{
|
|
if(argc < 2) { printf("Usage %s numIPC\n", argv[0]); exit(EXIT_FAILURE); }
|
|
MEMP *memoireP;
|
|
int mutex_data, mutex_tpa;
|
|
key_t sem_key_data;
|
|
key_t sem_key_tpa;
|
|
int shmid;
|
|
int shm_key = atoi(argv[1]);
|
|
|
|
/* création ou lien avec une memoireP partagée */
|
|
shmid = shmget(shm_key, sizeof(MEMP), 0766 | IPC_CREAT);
|
|
if (shmid == -1) { perror("shmget"); return (EXIT_FAILURE); }
|
|
|
|
if((memoireP = (MEMP *) shmat(shmid, 0 , 0766)) == (void *) -1)
|
|
{ perror("shmat"); exit(EXIT_FAILURE); }
|
|
|
|
if((mutex_data = creat_sem( sem_key_data, 1)) == -1)
|
|
{ perror("creat_sem"); exit(EXIT_FAILURE); }
|
|
|
|
if((mutex_tpa = creat_sem( sem_key_tpa, 1)) == -1)
|
|
{ perror("creat_sem"); exit(EXIT_FAILURE); }
|
|
|
|
P(mutex_data);
|
|
|
|
V(mutex_data);
|
|
|
|
/* utilisation */
|
|
// printf("memoireP[0] = %d\n", memoireP[0]++ );
|
|
|
|
return (EXIT_SUCCESS);
|
|
|
|
}
|