Terminating a job after a certain time, or after other criteria are met, usually involves having one process to run the job and another to monitor the completion criteria. In this tip you learn how to have a process manage the time while the real job runs. You also learn how to use the signal and trap facilities to terminate one of these tasks if the other finishes prematurely.
The standard Perl distribution comes with a debugger, although it's really just another Perl program, perl5db.pl. Since it is just a program, I can use it as the basis for writing my own debuggers to suit my needs, or I can use the interface perl5db.pl provides to configure its actions. That's just the beginning, though. read more...
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