CFServer.listener2.cmdThread C# (CSharp) Method

        private void cmdThread()
        {
            while (true)
            {
                mutpac.WaitOne();
                if (packetQ.Count == 0)
                {
                    mutpac.ReleaseMutex();
                    Thread.Sleep(10);
                    continue;
                }
                else
                {
                    packet data = packetQ.Dequeue();
                    mutpac.ReleaseMutex();
                    if (data.Cmd == null)
                    {
                        continue;
                    }
                    switch (data.Cmd)
                    {
                        case "l":
                            userlogin(data);
                            Thread thr = new Thread(new ParameterizedThreadStart(listenthread));
                            thr.Start(data.Name);
                            break;
                        case "q":
                            userlogout(data, true);
                            break;
                        case "q!":
                            userlogout(data, false);
                            break;
                        default:
                            defaultcmd(data);
                            break;
                    }
                }
            }
        }