#!/usr/bin/perl -w


use strict;

my %hash;
my $href = \%hash;
my @list = qw/1 2 3 4 5 6/;

my $pid = fork;

if ($pid)
{
    #parent
    print "$$: Parent Pid\n";
    my $new_child = fork;
    unless($new_child)
    {
        #child 1
        while (1){
          hash_check($href);
          sleep 3;
        }
        exit;
    }
}
else
{
    #child 2
    for (@list){
        pinger($href,$_);
    }
}

1 while waiter();

sub hash_check{
    my $hash = shift;
    print "~~~~~~~~~~~~~~~~~~\n";
    for (keys(%$hash)){
        print "Key is $_\n";
    }
    print "~~~~~~~~~~~~~~~~~~\n";
}

sub pinger{
    my $hash  = shift;
    my $value = shift;
    #print "$$: pinger\n";
    if ($value < 4){
        add_to_hash($hash, $value);
    }

}

sub waiter{
    my $waited_pid = wait;
    #    print $waited_pid,"\n";
}

sub add_to_hash{
    my $hash        = shift;
    my $failed_addr = shift;
    $$hash{$failed_addr} += 1;
}

sub del_from_hash{
    my $hash        = shift;
    my $pinged_ip   = shift;
    delete $$hash{$pinged_ip};
}