If I comment out the print line in 
while ($threadCount)
{
    my $engine = $dataQueue->dequeue;
    my $content = $dataQueue->dequeue;
    #print "$engine returned: $content\n";
    $threadCount --;
}

[download]
I frequently get error (warning?) "A thread exited while two threads were running".

I am a thread newbie and don't know why this is happening, nor how "bad" this is, or if it's bad at all.

You may want to check back at What is the fastest way to download a bunch of web pages? where BrowserUK does something similar which doesn't give this warning. At least, not yet.

At any rate, thanks for giving me something to get my fingers dirty with in thread world.

In reply to Re^2: ...How to parse search engine results fast? by tphyahoo
in thread ...How to parse search engine results fast? by A200560

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.