并编写捕获标志信号程序，自定义消息。
The program for capturing sign signal was programmed and specific message was defined.
在任何瞬间，只能有一个信号处理程序处理一个活动进程的一个信号。
There can be only one signal handler per signal per process active at any instant.
清单8中的代码实现了一个处理传入的SIGCHLD信号的信号处理程序。
The code in Listing 8 implements a signal handler to deal with the incoming SIGCHLD signal.
应用推荐