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Postings from November 2002
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
use strict
my $time_to_die=0;
my $sleep=5; #in seconds
my $timeout=3600; #in seconds
$SIG{ALRM} = sub { $time_to_die=1; };
alarm($timeout);
while(!$time_to_die){
#tasks here
sleep($sleep);
}
__END__
José.
> -----Original Message-----
> From: david [mailto:dzhuo@looksmart.net]
> Sent: Wednesday, November 27, 2002 7:50 PM
> To: beginners@perl.org
> Subject: Re: how do i make a script run for a certain period of time?
>
>
> Nix Juban wrote:
>
> > i want to insert this script in one of my programs
> appearing like its
> > processing or doing something..since my loop is while(1), meaning
> > always true, it will run forever until i halt it. 1)How do
> I time it
> > to run for only few seconds?
> > 2) What if im really processing something like extracting
> data through
> > ftp and parsing it, how do i run this while its doing all that?
> >
>
> try the alarm function along with $SIG{ALRM}. example:
>
> #!/usr/bin/perl -w
> use strict;
>
> $SIG{ALRM} = sub { die "see ya\n" };
>
> alarm(2);
> while(1){
> print time,"\n";
> }
>
> __END__
>
> the above will end in about 2 seconds. check:
>
> perldoc -f alarm
>
> for more. HTH
>
> david
>
> --
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