Re: Monitoring child processes


more useful options
	PerlMonks

Re: Monitoring child processes

by moritz (Cardinal)

on Mar 13, 2012 at 15:12 UTC ( #959376=note: print w/replies, xml )

Need Help??

in reply to Monitoring child processes

perlipc has quite some material on handling child processes; in particular it points out that you should call waitpid for the dying child processes, so that they don't become zombies/defunct. Calling waitpid is probably more idiomatic than polling all your children.

Perl 6 - second systems done right

Comment on Re: Monitoring child processes

Replies are listed 'Best First'.

Re^2: Monitoring child processes
by rovf (Priest) on Mar 13, 2012 at 15:49 UTC

waitpid

kill 0

seems

'IGNORE'

SIGCHLD

kill

waitpid

perlipc

Another interesting signal to send is signal number zero. This doesn't actually affect a child process, but instead checks whether it's alive or has changed its UID.
unless (kill 0 => $kid_pid) { warn "something wicked happened to $kid_pid"; }
[download]

--
Ronald Fischer <ynnor@mm.st>

[reply]
[d/l]
[select]

In Section Seekers of Perl Wisdom