sub getIP {

  while (1) {

                print "Thread ",$self->tid," waiting\n";
                {
                        lock $pool;
                        $pool++;
                        print "Pool incrementada : $pool\n";
                        cond_wait $pool; #all threads wait here for signal
                        $pool--;
                        print "Pool decrementadas : $pool \n";
                }

                # Here i get the ip address
                my $t_ip = $ip_address;

                sleep 1;

               # now let's tell main that we already have the ip address
                print "Thread ",$self->tid," retrieved data, signaling main\n";
                {
                        lock ($ip_address);
                        cond_signal ($ip_address);
                }

               #now i do the snmp session in the thread plus a snmpget
               my $sess = new SNMP::Session (DestHost => $t_ip, Community => ..., Version => '2c', UseSprintValue => '1')
or die "couldn't open a session";

               #The oid
               my $itens = new SNMP::VarList(['sometextthing', $oid]) or die "couldn't create a varlist";
               $info = $sess->get($itens) or die "couldn't get info";
...
}
}