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Re: the sub-process wont exit until the parent does

by mr_mischief (Monsignor)
on Mar 02, 2017 at 18:46 UTC ( #1183455=note: print w/replies, xml ) Need Help??

in reply to the sub-process wont exit until the parent does

If you're not using something like Parallel::ForkManager then you should be using wait or waitpid to wait for your child processes. You should also investigate $SIG{'CHLD'} and determine what you want for that. If you're writing from one to the other, also consider $SIG{'PIPE'}.

If you haven't, read up on perlipc (or perldoc perlipc or man perlipc) to learn some other stuff. Also, I can definitely recommend APUE and Unix Network Programming, Volume 2: Interprocess Communication. Advanced Unix Programming by Rochkind, The Unix Programming Environment by Kernighan and Pike, and lots of other material exist that could help, too.

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Re^2: the sub-process wont exit until the parent does
by sleepy_11 (Initiate) on Mar 03, 2017 at 01:47 UTC

    Thanks all your info. I think all 3 ways will fix this issue. And so far, I tried the " $SIG{'CHLD'}", and it works.

    I will go through the material as suggested

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