In exploring solutions to my problem, I have discovered / learned a few things.

1) Tk is not thread safe. Forked or threaded processes cannot interact with Tk widgets.

2) IPC::Shareable was what I needed to share variables between separate processes. However the act of making it shareable seems to alter the references in such a way that I could not use the elements of my hash within an array as -textvariables.

3) I DON"T NEED A SEPARATE PROCESS AT ALL!

It turns out I can use the

$mw->repeat(100, \&subroutine)

quite effectively to issue commands to check the status of the SCSI bus. So my program is rocking quite nicely now.

There are only 10 types of people in this world... those who understand binary, and those who don't.

In reply to Re: Need to create a SCSI monitoring child process. by LivingDust
in thread Need to create a SCSI monitoring child process. by LivingDust

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.