code: private void runSelectTask()
    {
      if (_lifecycle.isActive() || _lifecycle.isAfterStopping()) {
        log.warning(this + " cannot start because an instance is active");
        return;
      }
  
      initNative(_fd);
  
      synchronized (_thread) {
        _thread.notify();
      }
  
      if (! _lifecycle.toActive()) {
        log.warning(this + " invalid starting state");
        return;
      }
  
      runImpl();
    }
docs: Running process accepting connections.