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Postings from November 2002
> -----Original Message-----
> From: david [mailto:dzhuo@looksmart.net]
> Sent: Wednesday, November 27, 2002 8:34 PM
> To: beginners@perl.org
> Subject: RE: how do i make a script run for a certain period of time?
>
>
> Nyimi Jose wrote:
>
> > If you want your loop to first finish
> > what he is doing before die, do this instead.
> > Thus,when you receive the alarm sig you exit
> > first the loop then the script.
> >
> >
> > #!/usr/bin/perl -w
> >
> >
>
> you must be a bad bad guy!!! :-) just kidding!
Sorry !
> never listen to the perldoc hua? don't ever mix sleep and
> alarm! on most platform, sleep is implemented using alarm
> call. the problem? the
> alarm call inside the sleep function will thus replace your
> alarm function
> just outside the while loop. check the perldoc -f alarm for more.
What about this ?:
use strict
my $time_to_die=0;
my $timeout=30; #in seconds
$SIG{ALRM} = sub { $time_to_die=1; };
alarm($timeout);
while(!$time_to_die){
#tasks here
}
__END__
>
> david
>
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