示例#1
0
        /// <summary>
        /// Unschedule selected items for processing and apply an action to each unscheduled item.
        /// </summary>
        /// <param name="itemSelector">A function to test each element for removal.</param>
        /// <param name="processUnscheduled">An optional action to execute on each unscheduled item.</param>
        public void Unschedule(Func <T, bool> itemSelector, Action <T> processUnscheduled = null)
        {
            if (itemSelector == null)
            {
                throw new ArgumentNullException(nameof(itemSelector));
            }

            T[] unscheduledItems;

            lock (queueLock)
            {
                var keptItems = processingQueue.Where(x => !itemSelector(x)).ToArray();
                unscheduledItems = processingQueue.Where(itemSelector).ToArray();

                processingQueue.Clear();
                queueSet.Clear();
                foreach (var item in keptItems)
                {
                    processingQueue.Enqueue(item);
                    queueSet.Add(item);
                }
            }

            if (processUnscheduled != null)
            {
                foreach (var item in unscheduledItems)
                {
                    processUnscheduled(item);
                }
            }

            if (unscheduledItems.Length > 0)
            {
                Unscheduled?.Invoke(this, BuildEventArgs());
            }
        }
示例#2
0
 private void OnUnscheduled()
 {
     Unscheduled?.Invoke(this, EventArgs.Empty);
 }