最后，使用此前创建的ktime值启动计时器。

Finally, you start the timer using your previously created ktime value.

youdao

所有线程已启动后，将等待30秒再启动计时器。

After all of the threads are started, plus a 30 second wait, the timer is started.

youdao

更好的方法是启动计时器，并且使计时器不时地提醒事件线程去查看中间区域，以寻找更新。

A better approach is to start a timer, and have timer poke the event thread every so often to go look at the staging area for updates.

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