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Signal Handling--ref

发布时间:2021-01-25 08:01:09 所属栏目:Linux 来源:网络整理
导读:signal is a software interrupt delivered to a process. The operating system uses signals to report exceptional situations to an executing program. Some signals report errors such as references to invalid memory addresses; others report asy

A process can send a signalsignumto itself with a call likekill (getpid(),signum). Ifkillis used by a process to send a signal to itself,and the signal is not blocked,thenkilldelivers at least one signal (which might be some other pending unblocked signal instead of the signalsignum) to that process before it returns.

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