您可能想看看 Sys :: SigAction .我本人还没有使用过它，但是它有一些发光的评论.

You probably want to look at Sys::SigAction. I haven't used it myself, but it has some glowing reviews.

要注意的一件事是，可能超时的东西"是使用sleep还是alarm本身.另外，在错误处理代码中，我假设您已经为超时以外的错误做好了准备.

One thing to watch out for is if "stuff that might timeout" uses sleep or alarm itself. Also, in the error handling code, I assume you're prepared for errors other than a timeout.