Hello monks,

I have a couple of questions about perl threads. I have read the available tutorials online and have searched google, but my questions still remain.

a) If I use an smp system on Linux, can I expect threads to run on different processors like kernel threads? How exactly is the determination made which processor which thread runs on?

b) I have the following logic that I would like to code. Is there anyone that can help turn it into valid perl code?:

Run 30 threads that continuously check the internet to see if an event is true. If it is, another 30 threads which have already been spawned immediately take action.

c) Is there any timing issues that you can see that I will run into?

Thanks in advance for your posts, Brian

This code is so wrong :) 

#!/usr/bin/perl -w

use threads;  # threading routines
use threads::shared;
use Thread::Queue;

our $queue : shared = Thread::Queue->new;

for (1..30){
        $thr = threads->new(\&thread_sub);
}

for (1..30) {
        $thr1 = threads->new(\$thread_sub1);
}

$thr->join;
$thr1->join;

sub thread_sub {
     while ($test == 0) {
         if (certain test is true)
             {$test = 1;}
     }
#### Now here is where I am getting really god damned lost
     {my $action = $queue->enqueue;}
}

sub thread_sub1 {
      $action = $queue->dequeue; #??? totally lost here
      print "I am going to do your bidding master now that the test is
+ true\n";
}

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In reply to multi-threaded questions by btoovey

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