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how to avoid a <defunct> process?

by TKSpitty (Initiate)
on Oct 14, 2004 at 12:26 UTC ( #399176=perlquestion: print w/replies, xml ) Need Help??
TKSpitty has asked for the wisdom of the Perl Monks concerning the following question:

Monks, In a certain script I am starting a process in the background using fork and I catch the pid. The process I started also starts new child processes itself. When I try to kill this process (I use kill 2, then kill 9), it changes into a <defunct> process and the weird thing is, when I check whether it's alive with kill 0, it returns true... I don't know much about process management in Perl. Can anyone tell me how I can avoid getting a defunct process when I kill a forked process? Any help is appreciated, Martijn

Replies are listed 'Best First'.
Re: how to avoid a <defunct> process?
by Fletch (Chancellor) on Oct 14, 2004 at 12:45 UTC
Re: how to avoid a <defunct> process?
by tstock (Curate) on Oct 14, 2004 at 13:52 UTC
    perlipc should give you all the help you need; and if you want to disregard the forked children signal then set
    $SIG{CHLD} = 'IGNORE';

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