void choose_action2(t_data *data, int prior1, int prior2)
{
if (prior1 == 1 && prior2 == data->i)
reflechi_other(data);
if (prior1 == 1)
reflechi_current(data);
if (prior1 == 2)
mange(data);
if (prior1 == 0)
repos(data);
}
void* philosophe ( void* arg )
{
int *id=(int *) arg;
int left = *id;
int right = (left + 1) % PHILOSOPHES;
while(true) {
printf("Philosophe [%d] pense\n",*id);
sem_wait(&baguette[left]);
printf("Philosophe [%d] possède baguette gauche [%d]\n",*id,left);
sem_wait(&baguette[right]);
printf("Philosophe [%d] possède baguette droite [%d]\n",*id,right);
mange(*id);
sem_post(&baguette[left]);
printf("Philosophe [%d] a libéré baguette gauche [%d]\n",*id,left);
sem_post(&baguette[right]);
printf("Philosophe [%d] a libéré baguette droite [%d]\n",*id,right);
}
return (NULL);
}
int main(int argc, char * argv[]) {
srand(time(NULL));
if (argc != 1) {
perror("Le programme ne prend pas d'argument !");
}
key_t clef;
int id_sem, status = 1, id_shm;
pid_t pid = 0;
char * shared;
clef = ftok(argv[0], 'A');
id_sem = semget(clef, 6, IPC_CREAT | 0600);
semctl(id_sem, 0, SETVAL, 1);
semctl(id_sem, 1, SETVAL, 1);
semctl(id_sem, 2, SETVAL, 1);
semctl(id_sem, 3, SETVAL, 1);
semctl(id_sem, 4, SETVAL, 1);
semctl(id_sem, 5, SETVAL, 1);
id_shm = shmget(clef, 5, IPC_CREAT | 0600);
shared = shmat(id_shm, NULL, 0);
strcpy(shared, "PPPPP");
pid = fork();
if (pid == -1) {
perror("fork()");
} else if (pid == 0) {
pid = fork();
if (pid == -1) {
perror("fork()");
} else if (pid == 0) {
pid = fork();
if (pid == -1) {
perror("fork()");
} else if (pid == 0) {
pid = fork();
if (pid == -1) {
perror("fork()");
} else if (pid == 0) {
srand(time(NULL));
shared = shmat(id_shm, NULL, 0);
while (1) {
pense(shared, id_sem, 4);
demande(shared, id_sem, 4);
mange(shared, id_sem, 4);
}
exit(status);
} else {
srand(time(NULL));
shared = shmat(id_shm, NULL, 0);
while (1) {
pense(shared, id_sem, 3);
demande(shared, id_sem, 3);
mange(shared, id_sem, 3);
}
pid = waitpid(pid, &status, WIFEXITED(1));
exit(status);
}
} else {
srand(time(NULL));
shared = shmat(id_shm, NULL, 0);
while (1) {
pense(shared, id_sem, 2);
demande(shared, id_sem, 2);
mange(shared, id_sem, 2);
}
pid = waitpid(pid, &status, WIFEXITED(1));
exit(status);
}
} else {
srand(time(NULL));
shared = shmat(id_shm, NULL, 0);
while (1) {
pense(shared, id_sem, 1);
demande(shared, id_sem, 1);
mange(shared, id_sem, 1);
}
pid = waitpid(pid, &status, WIFEXITED(1));
exit(status);
}
} else {
while (1) {
pense(shared, id_sem, 0);
demande(shared, id_sem, 0);
mange(shared, id_sem, 0);
}
pid = waitpid(pid, &status, WIFEXITED(1));
exit(status);
}
return 0;
}
