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Ingy döt Net 2023-07-01 11:58:00 -04:00
commit cb5bb5e222
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21
Task/Handle-a-signal/Perl/handle-a-signal-1.pl Normal file
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my $start = time; # seconds since epohc
my $arlm=5; # every 5 seconds show how we're doing
my $i;
$SIG{QUIT} = sub
{print " Ran for ", time - $start, " seconds.\n"; die; };
$SIG{INT} = sub
{print " Running for ", time - $start, " seconds.\n"; };
$SIG{ALRM} = sub
{print " After $arlm seconds i= $i. Executing for ", time - $start, " seconds.\n"; alarm $arlm };
alarm $arlm; # trigger ALaRM after we've run for a while
print " ^C to inerrupt, ^\\ to quit, takes a break at $arlm seconds \n";
while ( 1 ) {
for ( $w=11935000; $w--; $w>0 ){}; # spinning is bad, but hey it's only a demo
print ( ++$i," \n");
}

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Task/Handle-a-signal/Perl/handle-a-signal-2.pl Normal file
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use 5.010;
use AnyEvent;
my $start = AE::time;
my $exit = AE::cv;
my $int = AE::signal 'INT', $exit;
my $n;
my $num = AE::timer 0, 0.5, sub { say $n++ };
$exit->recv;
say " interrupted after ", AE::time - $start, " seconds";