Installed and tested with the Parallel ForkManager version 1.03 the code is still exiting abnormally in the same section of ForkManager.pm:

Use of uninitialized value in block exit at /lib/site_perl/5.8.9/Paral
+lel/ForkManager.pm line 599.
Use of uninitialized value in block exit at /lib/site_perl/5.8.9/Paral
+lel/ForkManager.pm line 599.
Unable to create sub named "" at /lib/site_perl/5.8.9/Parallel/ForkMan
+ager.pm line 599.

[download]
    587 sub run_on_wait {
    588   my ($s,$code, $period)=@_;
    589 
    590   $s->{on_wait}=$code;
    591   $s->{on_wait_period} = $period;
    592 }
    593 
    594 sub on_wait {
    595   my ($s)=@_;
    596 
    597   if(ref($s->{on_wait}) eq 'CODE') {
    598     $s->{on_wait}->();
    599     if (defined $s->{on_wait_period}) {
    600         local $SIG{CHLD} = sub { } if ! defined $SIG{CHLD};
    601         select undef, undef, undef, $s->{on_wait_period}
    602     };
    603   };
    604 };

[download]

In reply to Re^4: Parallel ForkManager error with run_on_wait() (in 10 year old version) by sojourn548
in thread Parallel ForkManager error with run_on_wait() by sojourn548

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.