By "redirection within the script", do you mean perform the redirection in the worker thread or in the called utility?

Worker: I already redirect STDERR and STDOUT into buffers (local scalars) in every worker so that families of computations have their results contiguously located in the final report. I tried this as well as a bidirectional pipe (Bidirectional Communication with Yourself) but it fails to catch the error output by the child w/o the explicit command line redirect. I suppose I could implement it with IPC::Open3.

Utility: While the utility is developed by my group, I am not the programmer responsible. It's a C binary (heavy computation) and I philosophically I think it uses channels correctly. Plus the large number of issues my testing script has uncovered in the previous month has not left me as that gentleman's favorite person.

In reply to Re^4: Handling badly behaved system calls in threads by kennethk
in thread Handling badly behaved system calls in threads by kennethk

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.