If a sleeping process catches any signal, it doesn't automatically resume sleep after the handler fires. Your process is exiting because it's done.

To sleep a specified time in spite of interrupts, you need to be prepared to resume sleep. One way in Perl, 

my $span = 5;
$span -= sleep $span while $span > 0;

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The solution I gave would be improved by doing that wherever sleep 5 appears.

After Compline,
Zaxo

In reply to Re^3: protect children from SIG{INT} by Zaxo
in thread protect children from SIG{INT} by pileofrogs

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