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I first want to clarify that there are WAY better ways to do this, but if you want to increment a global variable to detect a signal being caught this will do the trick. As Paul noted earlier you shouldn't be trying to do anything complicated in the signal handler itself.
our $sig; $sig = 1; $SIG{INT} = sub { $sig++; }; my $oldsig; while (1) { if ($sig != $oldsig) { $control->removeMonitorPID($monitor->{PID}); #Execute the code ori +ginally in the signal handler. $oldsig = $sig; } .... Run main loop, but make sure to poll the status of the global v +ariable .... }

In reply to Re^3: Signal Handling throws Core Dump by former33t
in thread Signal Handling throws Core Dump by dsb

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