message: onShutdown with SWOOLE_BASE mode
diff: @@ -111,7 +111,12 @@ int swReactorProcess_start(swServer *serv)
  {
  serv->onStart(serv);
  }
  - return swReactorProcess_loop(&serv->gs->event_workers, &serv->gs->event_workers.workers[0]);
  + int retval = swReactorProcess_loop(&serv->gs->event_workers, &serv->gs->event_workers.workers[0]);
  + if (serv->onShutdown)
  + {
  + serv->onShutdown(serv);
  + }
  + return retval;
  }
  for (i = 0; i < serv->worker_num; i++)
  