In the child process, set up a signal handler. A standard kill sends out the TERM signal, but you can wait for any signal, and react accordingly. Here's an example:

use strict;
use warnings;

$SIG{HUP}  = \&sighup_handler;
$SIG{TERM} = \&sigterm_handler;

sleep(3600);

sub sigterm_handler {
    die "Caught TERM, will not do anything!";
}

sub sighup_handler {
    # commit changes to the database and exit
}

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- Luke

In reply to Re: How to tell Child wait till Parent kill it by blindluke
in thread How to tell Child wait till Parent kill it by gjoshi

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