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Re^2: multiple infinitive loops

by kelan (Deacon)
on Oct 06, 2004 at 20:41 UTC ( #397159=note: print w/replies, xml ) Need Help??


in reply to Re: multiple infinitive loops
in thread multiple infinitive loops

Here's a simple way to do it with POE. Keep in mind that there will be at minimum a one second delay before each check for a new event. More importantly, if the NextEvent() calls block (which I'm guessing they do from your code), you could wait longer than one second on a given check, meanwhile events from the other generator could be happening. That's the trouble with blocking calls. I didn't feel like copying 90% of your code, so you'll need to replace the ...'s with the relevant portions.

#!/usr/bin/perl use strict; use warnings; use POE; POE::Session->create( inline_states => { _start => \&init, check_creation => \&check_creation, check_deletion => \&check_deletion, }, ); $poe_kernel->run(); exit 0; sub init { my ( $kernel, $heap ) = @_[ KERNEL, HEAP ]; # make creation event logger thingie $query = ...; # the creation one ... $heap->{ creator } = $wbemsvc->ExecNotificationQuery( $query ); # make deletion event logger thingie $query = ...; # the deletion one ... $heap->{ deletor } = $wbemsvc->ExecNotificationQuery( $query ); $kernel->delay_set( check_creation => 1 ); $kernel->delay_set( check_deletion => 1 ); } sub check_creation { my ( $kernel, $heap ); my $wbeobj = $heap->{ creator }->NextEvent(); my $msg = $wbeobj->{ TargetInstance }->{ Message }; # ... do the message stuff here $kernel->delay_set( check_creation => 1 ); } sub check_deletion { my ( $kernel, $heap ); my $wbeobj = $heap->{ deletor }->NextEvent(); my $msg = $wbeobj->{ TargetInstance }->{ Message }; # ... do the message stuff here $kernel->delay_set( check_deletion => 1 ); }

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