I'm working on a routine to sort email addresses by MX server for (hopefully) faster delivery than just sorting by domain. I'm intending to have a set of forked processes then deliver the mail to each MX server. Also, the MX lookups are done ahead of time, also using forked processes.

My sort routine works, but it's kind of clumsy. I'm using IPC::Shareable to store the sorted MX servers, but I ran into problems when trying to store references as hash keys, because it IPC::Shareable tries to tie the references also, and I don't see a way to disable that behavior. So I end up doing some splits/joins to get the job done (amateurishly).

Anyone care to give me some pointers on how I can improve this? I am posting the code as a reply to this message, since it's fairly long.

In reply to Forking and sharing variables by httptech

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.