in reply to PERL on VMS
locks up until the perl program exits ... I just wrote a new perl program
Just a five cents - maybe I misundertood you, but if you want to prevent your program from hanging up in loop forever, you can use timer as a watchdog inside your perl program. The hanlder should exit if some global variable doesn't change, and when everything is going rigth, you explicitly change it in main program loop. This is just an example usage for the idea.
Just a five cents - maybe I misundertood you, but if you want to prevent your program from hanging up in loop forever, you can use timer as a watchdog inside your perl program. The hanlder should exit if some global variable doesn't change, and when everything is going rigth, you explicitly change it in main program loop. This is just an example usage for the idea.
#!/usr/bin/env perl use strict; use warnings; our $flag = 0; $SIG{ALRM} = \&Watchdog; sub Watchdog { print "--- Tick ".$main::flag++."---\n"; if ($main::flag >3) { print "--- Bark! Bark! ---\n"; exit 1; } alarm 1; } alarm 1; while(1) { print "main loop...\n"; while(1){}; print "done\n"; $main::flag = 0; }
|
---|
Replies are listed 'Best First'. | |
---|---|
Re^2: PERL on VMS
by choroba (Cardinal) on Jan 30, 2012 at 10:09 UTC | |
by fisher (Priest) on Jan 30, 2012 at 10:26 UTC |
In Section
Seekers of Perl Wisdom