From: Francis Cianfrocca <garbagecat10@...>
Date: 2006-06-05T10:02:30+09:00
Subject: Re: Please kill the children as you're leaving

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>>>Non with irb, but you may be able to make the parent a session leader,
which might cause SIGHUP to be delivered to its children when it exits.

If a process becomes a process group leader (setpgid(0,0) in the child
process after the fork and before it calls exec), then its parent can kill
it and all of its subprocesses by sending a signal to the negative of its
pid. Not sure that helps here though. The best idea I've heard so far is for
the child processes to periodically write a pipe that terminates in the
parent. Then if the parent goes, the children will get killed by SIGPIPE.

This stuff is pretty hard to get right, have to admit.

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