The kill builtin will accept a negative pid as argument and signal the entire process group. That may not be portable to win32, but you can try it. Even if the negative argument trick doesn't work, you can give kill a list of pid's to signal, 

kill 'INT', keys %process;
delete $process{wait()} while %process;

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After Compline,
Zaxo

In reply to Re: Killing of ALL children made by Open3 by Zaxo
in thread Killing of ALL children made by Open3 by Anonymous Monk

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