code: func (cli *DaemonCli) setupConfigReloadTrap() {
  	go func() {
  		sa := windows.SecurityAttributes{
  			Length: 0,
  		}
  		event := "Global\\docker-daemon-config-" + fmt.Sprint(os.Getpid())
  		ev, _ := windows.UTF16PtrFromString(event)
  		if h, _ := windows.CreateEvent(&sa, 0, 0, ev); h != 0 {
  			logrus.Debugf("Config reload - waiting signal at %s", event)
  			for {
  				windows.WaitForSingleObject(h, windows.INFINITE)
  				cli.reloadConfig()
  			}
  		}
  	}()
  }
docs: // setupConfigReloadTrap configures a Win32 event to reload the configuration.