[Linux-disciples] perl parent vs. child vs. process group -- killing

[Adam Rosi-Kessel]

On Tue, Aug 10, 2004 at 02:15:30PM -0400, Dylan Thurston wrote:
> On Tue, Aug 10, 2004 at 10:14:53AM -0400, Adam Rosi-Kessel wrote:
> > The above code no longer works; apparently the process group is connected
> > to the parent and not the child.  killing getppid() doesn't work in this
> > case, though, because the $SIG{HUP} = 'IGNORE' doesn't apply to the
> > parent.
> Can you set the process group ID?  There's a handy system call setpgid
> which is presumably what the shell at an interactive prompt does for
> you.

This doesn't seem to do it either.

Really what would help is if there were a way to find out what children a
child has spawned so they can all be killed.  If I kill the pid of the
child and pid+1 in my perl script, that does the job, but that assumes
that the child only has one child and that the grandchild's pid is pid+1,
which I don't think is a safe assumption to make.
-- 
Adam Kessel
http://adam.rosi-kessel.org
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