/* _background_signal_hand - Process daemon-wide signals for the
* backup controller */
static void *_background_signal_hand(void *no_data)
{
int sig, rc;
sigset_t set;
/* Locks: Write configuration, job, node, and partition */
slurmctld_lock_t config_write_lock = {
WRITE_LOCK, WRITE_LOCK, WRITE_LOCK, WRITE_LOCK };
(void) pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
(void) pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
while (slurmctld_config.shutdown_time == 0) {
xsignal_sigset_create(backup_sigarray, &set);
rc = sigwait(&set, &sig);
if (rc == EINTR)
continue;
switch (sig) {
case SIGINT: /* kill -2 or <CTRL-C> */
case SIGTERM: /* kill -15 */
info("Terminate signal (SIGINT or SIGTERM) received");
slurmctld_config.shutdown_time = time(NULL);
slurmctld_shutdown();
return NULL; /* Normal termination */
break;
case SIGHUP: /* kill -1 */
info("Reconfigure signal (SIGHUP) received");
/*
* XXX - need to shut down the scheduler
* plugin, re-read the configuration, and then
* restart the (possibly new) plugin.
*/
lock_slurmctld(config_write_lock);
rc = _backup_reconfig();
if (rc)
error("_backup_reconfig: %s",
slurm_strerror(rc));
else {
/* Leave config lock set through this */
_update_cred_key();
}
unlock_slurmctld(config_write_lock);
break;
case SIGABRT: /* abort */
info("SIGABRT received");
slurmctld_config.shutdown_time = time(NULL);
slurmctld_shutdown();
dump_core = true;
return NULL; /* Normal termination */
break;
default:
error("Invalid signal (%d) received", sig);
}
}
return NULL;
}
/* _signal_handler - Process daemon-wide signals */
static void *_signal_handler(void *no_data)
{
int rc, sig;
int sig_array[] = {SIGINT, SIGTERM, SIGHUP, SIGABRT, SIGUSR2, 0};
sigset_t set;
(void) pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
(void) pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
/* Make sure no required signals are ignored (possibly inherited) */
_default_sigaction(SIGINT);
_default_sigaction(SIGTERM);
_default_sigaction(SIGHUP);
_default_sigaction(SIGABRT);
_default_sigaction(SIGUSR2);
while (1) {
xsignal_sigset_create(sig_array, &set);
rc = sigwait(&set, &sig);
if (rc == EINTR)
continue;
switch (sig) {
case SIGHUP: /* kill -1 */
info("Reconfigure signal (SIGHUP) received");
reconfig();
break;
case SIGINT: /* kill -2 or <CTRL-C> */
case SIGTERM: /* kill -15 */
info("Terminate signal (SIGINT or SIGTERM) received");
shutdown_threads();
return NULL; /* Normal termination */
case SIGABRT: /* abort */
info("SIGABRT received");
abort(); /* Should terminate here */
shutdown_threads();
return NULL;
case SIGUSR2:
info("Logrotate signal (SIGUSR2) received");
_update_logging(false);
break;
default:
error("Invalid signal (%d) received", sig);
}
}
}
