private bool PumpQueue(ArrayList queue,
                               SingleFeedAction sfa, MultipleFeedAction mfa)
        {
            PodcastFeedInfo feed  = null;
            ICollection     feeds = null;

            int range_upper = -1;

            lock (queue.SyncRoot)
            {
                if (queue.Count == 0)
                {
                    return(false);
                }

                int queue_count = queue.Count;
                range_upper = (queue_count >= 32) ? 31 : queue_count;

                if (queue_count == 1)
                {
                    feed = queue [0] as PodcastFeedInfo;
                }
                else if (queue_count > 1)
                {
                    feeds = queue.GetRange(0, range_upper);
                }
            }

            if (feed != null)
            {
                sfa(feed);
            }
            else if (feeds != null)
            {
                mfa(feeds);
            }

            lock (queue.SyncRoot)
            {
                queue.RemoveRange(0, range_upper);

                if (queue.Count == 0)
                {
                    return(false);
                }
                else
                {
                    return(true);
                }
            }
        }
        private bool PumpQueue(ArrayList queue,
                                SingleFeedAction sfa, MultipleFeedAction mfa)
        {
            PodcastFeedInfo feed = null;
            ICollection feeds = null;

            int range_upper = -1;

            lock (queue.SyncRoot)
            {

                if (queue.Count == 0)
                {
                    return false;
                }

                int queue_count = queue.Count;
                range_upper = (queue_count >= 32) ? 31 : queue_count;

                if (queue_count == 1)
                {
                    feed = queue [0] as PodcastFeedInfo;
                }
                else if (queue_count > 1)
                {
                    feeds = queue.GetRange (0, range_upper);
                }
            }

            if (feed != null)
            {
                sfa (feed);
            }
            else if (feeds != null)
            {
                mfa (feeds);
            }

            lock (queue.SyncRoot)
            {
                queue.RemoveRange (0, range_upper);

                if (queue.Count == 0)
                {
                    return false;
                }
                else
                {
                    return true;
                }
            }
        }