>  
# The following gives an error that is_running.al is missing.
# Tried threads-> list (threads::running) to search and compare: gave
# bareword error.

Tried the code on linux, got the same error so activeperl is off the hook. 
"list" should be:
$thr-> list()

The perldocs show no is_running method, nor a kill() method, for threads. 
I think
$thr-> kill('SIGUSR1');

is a mix of info here, you mean to send a signal to $thr but
while ($thr-> list() ) {

isn't ... er quite right?  Seems you need join/detach and to keep the 
thread ids somewhere

a

-------------------
Andy Bach
Systems Mangler
Internet: andy_bach@[...].gov
Voice: (608) 261-5738 Fax: 264-5932

"When angry, count to four; when very angry, swear."
Mark Twain

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