fork

Basically, you call it once, it returns twice. If it's the child, it returns 0. If the parent, returns the child's PID. So, from Camel: 

if ($pid = fork)
{
    # parent here.
}
elsif (defined $pid)
{
    #child here.
}

[download]
Left out some error checking stuff. make sure you wait for your child processes, or your parent will terminate and leave the kids hangin. Read up on fork, wait, and check out $SIG{CHLD} for handling forks. It's a confusing subject at first, but you'll soon pick it up.

Enjoy!

Trinary

In reply to Re: Forks/Threads by Trinary
in thread Forks/Threads by GoatLove

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.