I'd also add that sharing data between threads tends to be nicer than messing with shared memory portably, mostly because Unix shared memory never really made sense to me.
Personally, I was never impressed with it on VMS. On Unix it's an absolute dream in comparison. (At least this is what my unreliable synapses are telling me.)

Shared memory is not perfect (what is, come to that), but it allowed me on one project, years ago, to share "live, up-to-date" data between users at twelve different sites, and did so in a reliable, relatively stable way. I've not done much with threading, so my view may be prejudiced, but you would have to prove to me that threading would be a better solution on such a situation. I'd listen, but I'd listen with a cynical ear.

--
tbone1
Ain't enough 'O's in 'stoopid' to describe that guy.
- Dave "the King" Wilson

In reply to Re: Re: Why use threads over processes, or why use processes over threads? by tbone1
in thread Why use threads over processes, or why use processes over threads? by pg

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.