From: nobuyoshi nakada <nobuyoshi.nakada@...>
Date: 2005-05-24T15:37:59+09:00
Subject: Re: Killing a Process started with Kernel.system

Hi,

At Tue, 24 May 2005 14:40:17 +0900,
Martin aus Chemnitz wrote in [ruby-talk:143491]:
> Yukihiro Matsumoto writes in 
> <1052988371.738185.28868.nullmailer@picachu.netlab.jp>:
> > If you want to kill child processes when the thread is down,
> > 
> >   th = Thread.new{
> >      Thread.current[:children] = []
> >      begin
> >        ... add child processes to Thread.current[:children]
> >      ensure
> >        Process.kill("TERM", *Thread.current[:children])
> >      end
> >   } 
> but I think I can't get the PID of a system call either.

Fundamentally, since Kernel.system doesn't finish until the child
process exits, so PID can not be available.

> I would be glad if such a feature could be implemented. (Or, of course, 
> if anyone can tell me suitable solution.)

In 1.9, Kernel.spawn (or Process.spawn) does it.

-- 
Nobu Nakada