int main(int argc, char *argv[])
{
int i;
int tmp;
int nb_fils;
int fd;
int *sp;
tmp=0;
if(argc < 2){
printf("missing arg");
}
srand(time(NULL));
nb_fils = atoi(argv[1]);
if ((fd = shm_open("/remonte_posix_partagee.c", O_RDWR|O_CREAT,0600)) == -1) {
perror("shm_open");
exit(1);
}
if (ftruncate(fd, nb_fils*sizeof(int)) == -1) {
perror("ftruncate");
exit(1);
}
if((sp = mmap(NULL, sizeof(int), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0))== MAP_FAILED) {
perror("mmap");
exit(1);
}
remonte_ipc(nb_fils, sp);
for (i=0; i<nb_fils; i++)
tmp += *sp++;
shm_unlink("/remonte_posix_partagee.c");
printf("somme alea: %d\n", tmp);
return 0;
}
int main(int argc, char *argv[])
{
int i;
int tmp;
int nb_fils;
key_t cle;
int shm_id;
int *p_int;
int *adr_att;
int taille;
tmp=0;
if(argc < 2){
printf("missing arg");
}
srand(time(NULL));
nb_fils = atoi(argv[1]);
taille = nb_fils*sizeof(int);
cle = ftok("remonte_partagee.c" , getpid() & 0xFF);
shm_id = shmget(cle, taille, 0666 | IPC_CREAT);
adr_att = shmat(shm_id, 0, 0600);
p_int = (int *)adr_att;
remonte_ipc(nb_fils, p_int);
p_int = (int *)adr_att;
for (i=0; i<nb_fils; i++)
tmp += *p_int++;
shmdt(adr_att);
shmctl(shm_id, IPC_RMID, (struct shmid_ds *) NULL);
printf("somme alea: %d\n", tmp);
return 0;
}
int main(int argc, char **argv) {
int nb_fils, msg_id_pere;
key_t cle;
/* Nombre d'arguments invalide */
if (argc != 2) {
printf("Usage : ./remonte_ipc nb_fils\n");
return EXIT_FAILURE;
}
/* Nombre de fils invalide */
nb_fils = atoi(argv[1]);
if (!nb_fils) {
printf("nb_fils doit être un nombre strictement positif.\n");
return EXIT_FAILURE;
}
/* Création clé = (nom du programme, 8 LSB du pid) */
if ((cle = ftok(argv[0], getpid() & 0xFF)) == -1) {
perror("Erreur ftok.\n");
return EXIT_FAILURE;
}
/* Création ID de la file MQN */
if ((msg_id_pere = msgget(cle, 0666 | IPC_CREAT)) == -1) {
perror("Erreur msgget.\n");
return EXIT_FAILURE;
}
remonte_ipc(nb_fils, msg_id_pere, argv[0]);
/* On libère la file MQN */
if (msgctl(msg_id_pere, IPC_RMID, NULL) == -1) {
perror("Erreur msgctl.\n");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
