I am new to perl and I was wondering what the following code does. Will this fork+socketpair works in perl windows environment. I need to write the same code in windows.
Is there any effective/alternative way I can do the same in windows?
May I know why it wont work in windows env?
The following is the code, Any help would be appreciated,Thanks..
if ($^O eq 'MSWin') {
    print("\nrunning directly from Windows is not supported -- Install
+ Cygwin\n\n");
        exit(1);
    }
   
    my ($IO_FLAGS, $OS_MSWIN);
    
    BEGIN {
        ($IO_FLAGS, $OS_MSWIN) = (0, FALSE);

        # set any linux default values
        my $isWindows = FALSE;
        my $ioFlags   = 0x00005421;

        if ($^O =~ m/win/i) {
        
            # change to win32 values
            $isWindows  = TRUE;
            $ioFlags    = 0x8004667e;

        }
$processes=2;

my $pid = fork(); 
for (my $i = 1; $i <= $processes; $i++)
    {

        my($child,$parent);

        socketpair($child,$parent,AF_UNIX,SOCK_STREAM,PF_UNSPEC)
            or die 'socketpair creation failure: '.$!;

        my $pid;
        if ($pid = fork) {
            close($parent);

            my @ary=(1);                       
# non-blocking IO, compare to blocking "my @ary=(0);"
            my $val=pack("L",@ary);             
                                                 
            ioctl($child, $IO_FLAGS, $val);

            
# we now have another child! we'll poll these later
            push @children, [ $child, $pid ];
            push @pids, $pid;

          } else {
            debug 'child starting';
            close($child);

            # kick off the child process
            childProcess($parent);

            close($parent);
            exit();
        }
    }

[download]

In reply to fork and socketpair by shijumic

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.