Hi ptkdb, here is the full sub listing...
sub _run_ReadWrite {
    my ($invocant, $cmd, $input) = @_;

    # declare needed variables and connect to process
    local (*CHILD_IN, *CHILD_OUT, *CHILD_ERR);
    my ($childpid, @outlines, @errlines);
    $childpid = open3(*CHILD_IN, *CHILD_OUT, *CHILD_ERR, $cmd);

    # feed input to process, then close input
    print CHILD_IN $input; close (CHILD_IN);

    # save output and errors, close those channels and the process
    chomp(@outlines = <CHILD_OUT>); close (CHILD_OUT);
    chomp(@errlines = <CHILD_ERR>); close (CHILD_ERR);
    waitpid($childpid, 0);

    # return the result of the call
    return { OUTPUT => \@outlines , ERRORS => \@errlines };
}

[download]
Now like I said, calls to this sub return exactly what I expect, as long as I pass a valid $cmd and $input.

The problem is when a call to this function is made from a script that has, for some reason, closed STDOUT, the @outlines array ends out empty. The process doesn't hang or fail, in fact everything works fine, its just that the launched process' output "gets lost" somewhere. I want to be able to catch it !

Is that clearer ?

Thanks for your help

In reply to Re: Re: IPC::Open3 & closed STDOUT by Anonymous Monk
in thread IPC::Open3 & closed STDOUT by lgauthie

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.