从Ruby杀死进程组会杀死我的整个计算机 [英] Killing process group from Ruby kills my whole computer

问题描述

我有一个脚本 (script.sh)，它产生了很多子进程.如果我通过./script.sh从外壳运行脚本，则可以通过

I have a script (script.sh) that spawns a whole lot of child processes. If I run the script from the shell via ./script.sh, I can kill the whole process tree via

kill -- -<PID> 

其中PID是script.sh进程的进程ID(显然等于组ID).

where PID is the process ID of the script.sh process (this apparently equals the group ID).

但是，如果我通过

pid = Process.spawn(script.sh) 

我无法杀死进程树.

Process.kill(9,pid) 

仅杀死父进程.甚至更糟的是，以下

only kills the parent process. And even worst, the following

Process.kill(9,-Process.getpgid(pid))  ### Don't try this line at home

终止我的计算机.尝试通过

terminates my computer. Trying to kill the processes via

system("kill -- -#{pid}") 

也失败.我应该如何从Ruby中杀死该进程树?

also fails. How am I supposed to kill this process tree from Ruby?

推荐答案

我想我已经找到了解决方案.将进程生成为

I think I have found the solution. Spawning the process as

pid = Process.spawn(script.sh, :pgroup => true)

使我能够通过

Process.kill(9,-Process.getpgid(pid))

默认情况下，bash group看起来好像正在处理，而Spawn默认情况下未启用.

It looks like bash groups processes by default, while Spawn doesn't enable this by default.

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