Remember that at some point of the child's lifetime, it was the parent. Just do something along the lines of:


#!/usr/bin/perl -w
use strict;

our $Parent_PID = $$;

# ... Many interesting lines of code ...

my $pid;

# The mini-loop below will re-attempt the fork()
# in case of errors, that are usually transient
# resource shortages. You might not want to do this
# in your scenario...

while (($pid = fork()) < 0) { sleep 5; }

if ($pid) {        # Father

  print "father: the child is $pid\n";

# ... Interesting code to wait for the children ...

}
else {             # Child

  print "child: My parent is $Parent_PID\n";
  print "child: I am $pid (or $$)\n";

}

[download]
Hope this helps you.

In reply to Re: Re: getting a child's process ID by fokat
in thread getting a child's process ID by Seshouan

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.