int safe_signal (int n, void (*p) (int))
{
struct sigaction u, v;
u.sa_handler = p;
sigemptyset (&u.sa_mask);
u.sa_flags = 0;
return (safe_sigaction (n, &u, &v));
}
void os_init_prolog_globals(void)
{
struct sigaction action;
action.sa_handler = sigsegv_handler;
sigemptyset(&action.sa_mask);
action.sa_flags = 0;
safe_sigaction(SIGSEGV, &action, &original_sigsegv_action);
}
static void
setup_signals (void)
{
unsigned i = 0;
struct sigaction sa;
sa.sa_handler = handle_signal;
sa.sa_flags = SA_NOCLDSTOP;
sigfillset(&sa.sa_mask);
while (forward_signals[i].code!= NO_SIGNAL) {
safe_sigaction (forward_signals[i].name,
forward_signals[i].code, &sa);
i++;
}
safe_sigaction ("CHLD", SIGCHLD, &sa);
safe_sigaction ("TERM", SIGTERM, &sa);
safe_sigaction ("INT" , SIGINT , &sa);
}
