The kernel takes care of moving the process to sleeping state, waiting for the socket to be ready for writing, reading the TCP status code, and so on.
内核负责将进程转移到睡眠状态、等待套接字做好写入的准备、读取TCP状态代码，等等。
This is great if you instantly need to be on the move after a nap, and you can bounce out of your sleeping state and jump into work feeling refreshed and energised.
如果你需要在瞌睡之后马上清醒，这是很好的方法，你可以马上从睡眠中醒来精神百倍地投入工作。
Other threads might enter a sleeping state only to be awakened periodically to poll for a change or update status information.
其他线程可能进入休眠状态，只被定期唤醒以轮询更改或更新状态信息。
Other threads might enter a sleeping state only to be awakened periodically to poll for a change or update status information.
其他线程可能进入休眠状态，只被定期唤醒以轮询更改或更新状态信息。
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