/**
Forks and executes the required number of processors.
*/
static void start_processors(void) {
int i, pid;
char proc_id[8], nsems[8];
if(itoa((2 * processors) + 2, nsems, 8) == -1) {
write_to_fd(2, "Failed to convert number of semaphores\n");
kill_group(SIGTERM);
}
for (i = 0; i < processors; ++i) {
pid = fork();
if (pid == -1) {
write_to_fd(2, "Failed to fork processor\n");
kill_group(SIGTERM);
}
if (pid == 0) {
if(itoa(i, proc_id, 8) != -1)
execl("processor.x", "processor.x", proc_id, nsems, (char *) NULL);
kill_group(SIGTERM);
}
}
}
void kill_groups(state *s)
{
int prisoners;
int misses = 0;
int i = 0;
while (misses < 2 && i++ < NUM_MAX_KILLS) {
if (kill_group(s)) {
misses = 0;
}
else {
make_move(s, 0, &prisoners);
misses++;
}
}
}