以编程方式获取另一个进程的父pid? [英] Programmatically get parent pid of another process?

问题描述

我尝试了google，但是发现getppid()可以获取 current 进程的父pid.

I tried google, but found getppid() which gets the parent pid of the current process.

我需要类似getppid(some_other_pid)的东西，有这样的东西吗?基本上获取某个进程的pid，然后返回父进程的pid.

I need something like getppid(some_other_pid), is there such a thing? Basically takes the pid of some process and returns the parent process' pid.

推荐答案

我认为最简单的方法是打开"/proc"并解析内容.

I think the simplest thing would be to open "/proc" and parse the contents.

您会发现ppid是/proc/pid/stat的第四个参数

You'll find the ppid as the 4th parameter of /proc/pid/stat

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