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Re: parallel reading

by ashokpj (Hermit)
on May 09, 2006 at 13:07 UTC ( #548197=note: print w/replies, xml ) Need Help??

in reply to parallel reading

Try this

#!/usr/local/bin/perl open (INFILE1, "/home/ashokpj/merge1.txt") || die ("Cannot open input file merge1\n"); open (INFILE2, "/home/ashokpj/merge2.txt") || die ("Cannot open input file merge2\n"); open (INFILE3, "/home/ashokpj/merge3.txt") || die ("Cannot open input file merge2\n"); chomp($line1 = <INFILE1>); chomp($line2 = <INFILE2>); chomp($line3 = <INFILE3>); while ($line1 ne "" || $line2 ne "" || $line3 ne "" ) { print $line1.$line2.$line3."\n"; if ($line1 ne "") { chomp($line1 = <INFILE1>); } if ($line2 ne "") { chomp($line2 = <INFILE2>); } if ($line3 ne "") { chomp($line3 = <INFILE3>); } } close(INFILE1); close(INFILE2); close(INFILE3);

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[ambrus]: you just need an io watcher, created by &AnyEvent::Impl:: Whatever::io(...)
[Corion]: So after talking it through with you even while I'm still not entirely clear on where AE ends and my implementation begins, I think I understand that I only need to implement some smaller parts for each functionality I want to support.
[Corion]: Yeah... and you might even be able to mix and match additional functionality if you have additional async suppliers, like from a separate thread
[ambrus]: You hvae to be careful with the timer, because apparently Prima::Timer insists on being periodic, wheras AnyEvent::Impl:: Whatever::timer should give a one-shot timer watcher
[ambrus]: I think the minimal implementation here is just a timer and io function, plus pushing to the @REGISTRY.

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