static void signal_init(void)
{
	signal(SIGTERM, exit_handler);
	signal(SIGINT,  exit_handler);
	signal(SIGHUP,  exit_handler);
	signal(SIGQUIT, exit_handler);
}
static void signal_init(void)
{
	signal(SIGTERM, exit_handler);
	signal(SIGINT,  exit_handler);
	signal(SIGHUP,  exit_handler);
	signal(SIGQUIT, exit_handler);
}