MissionPlanner.srtm.requestRunner C# (CSharp) Method

        static void requestRunner()
        {
            requestThreadrun = true;

            while (requestThreadrun)
            {
                try
                {
                    string item = "";
                    lock (objlock)
                    {
                        if (queue.Count > 0)
                        {
                            item = queue[0];
                        }
                    }

                    if (item != "")
                    {
                        get3secfile(item);
                        lock (objlock)
                        {
                            queue.Remove(item);
                        }
                    }
                }
                catch (Exception ex)
                {
                    log.Error(ex);
                }
                Thread.Sleep(1000);
            }
        }