我怎样才能prevent僵尸子进程？ [英] How can I prevent zombie child processes?

问题描述

我写一个使用叉（）产卵处理客户端连接的服务器。服务器并不需要知道发生了什么分叉过程 - 他们对自己的工作，他们正在做的时候，他们应该不是死成为僵尸。什么是实现这个简单的方法？

I am writing a server that uses fork() to spawn handlers for client connections. The server does not need to know about what happens to the forked processes – they work on their own, and when they're done, they should just die instead of becoming zombies. What is an easy way to accomplish this?

推荐答案

有几种方法，但使用 的sigaction 与 SA_NOCLDWAIT 在父进程可能是一个最简单的：

There are several ways, but using sigaction with SA_NOCLDWAIT in the parent process is probably the easiest one:

struct sigaction sigchld_action = {
  .sa_handler = SIG_DFL,
  .sa_flags = SA_NOCLDWAIT
};
sigaction(SIGCHLD, &sigchld_action, NULL);

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