Function cupsdStartSystemMonitor

scheduler/sysman.c:306–347

 */

void
cupsdStartSystemMonitor(void)
{
  int	flags;				/* fcntl flags on pipe */


  cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdStartSystemMonitor()");

  if (cupsdOpenPipe(SysEventPipes))
  {
    cupsdLogMessage(CUPSD_LOG_ERROR, "System event monitor pipe() failed - %s!",
                    strerror(errno));
    return;
  }

  cupsdAddSelect(SysEventPipes[0], (cupsd_selfunc_t)sysUpdate, NULL, NULL);

 /*
  * Set non-blocking mode on the descriptor we will be receiving notification
  * events on.
  */

  flags = fcntl(SysEventPipes[0], F_GETFL, 0);
  fcntl(SysEventPipes[0], F_SETFL, flags | O_NONBLOCK);

 /*
  * Start the thread that runs the runloop...
  */

  pthread_mutex_init(&SysEventThreadMutex, NULL);
  pthread_cond_init(&SysEventThreadCond, NULL);
  pthread_create(&SysEventThread, NULL, (void *(*)(void *))sysEventThreadEntry, NULL);

 /*
  * Monitor for power source changes via dispatch queue...
  */

  cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdStartSystemMonitor: IOPSGetTimeRemainingEstimate=%f", IOPSGetTimeRemainingEstimate());
  ACPower = IOPSGetTimeRemainingEstimate() == kIOPSTimeRemainingUnlimited;
  notify_register_dispatch(kIOPSNotifyPowerSource, &PSToken, dispatch_get_main_queue(), ^(int t) { (void)t;
      ACPower = IOPSGetTimeRemainingEstimate() == kIOPSTimeRemainingUnlimited; });
}


/*