Hello all,

I built a class that's main purpose is to execute various commands via backticks. I then check $? to see what happens afterwards and return it back through the method.

Anyway, I have a very strange problem. One command seems to time out all the time. But after EXACTLY 56 timeouts of this certain command, it refuses to run anymore and returns $? as -1 and blank in stdout and stderr.

The code is almost straight from the Perl Cookbook.

 $SIG{ALRM} =\&time_out;

    eval {
        alarm $time_out;

        @args = `$command 2>&1`;
        alarm (0);
    
    };
 
    if ($@) {
        $err = 100;
    }
 
    # error codes from wait are bit shifted
    # if its 100, we timed out

    $err = ($? >> 8) if ($err != 100);
 
    sub time_out{
      # Error: Timeout on process
     alarm 0;
     die;
    }
  return ({err => $err, data => \@args});

[download]

Any ideas?

Edit kudra, 2001-11-07 Added code tags

In reply to timeout process problems by shrubbery

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.