//有關(guān)生產(chǎn)消費(fèi)的泛型類
    public class ProducerConsumer<T>
    {
        //用來(lái)存儲(chǔ)生產(chǎn)者的隊(duì)列
        private readonly Queue<T>  queue = new Queue<T>();
        //鎖
        private readonly object queueLocker = new object();
        //消費(fèi)行為
        private readonly Action<T> consumerAction;
        //出列的時(shí)候需要檢查隊(duì)列中是否有元素，如果沒(méi)有，需要阻塞
        private readonly AutoResetEvent queueWaitHandle = new AutoResetEvent(false);
        public ProducerConsumer(Action<T> consumerAction)
        {
            if (consumerAction == null)
            {
                throw new ArgumentNullException("consumerAction");
            }
            this.consumerAction = consumerAction;
            //后臺(tái)開(kāi)啟一個(gè)線程開(kāi)始消費(fèi)生產(chǎn)者
            new Thread(this.ConsumeItems){IsBackground = true}.Start();
        }
        //進(jìn)列
        public void Enqueue(T item)
        {
            //確保同一時(shí)間只有一個(gè)生產(chǎn)者進(jìn)列
            lock (queueLocker)
            {
                queue.Enqueue(item);
                //每次進(jìn)列都要設(shè)置AutoResetEvent事件
                this.queueWaitHandle.Set();
            }
        }
        //消費(fèi)動(dòng)作
        private void ConsumeItems()
        {
            while (true)
            {
                T nextItem = default(T);
                //標(biāo)志，確認(rèn)隊(duì)列中的生產(chǎn)者是否存在
                bool doesItemExist;
                //確保同一時(shí)間只有一個(gè)生產(chǎn)者出列
                lock (this.queueLocker)
                {
                    //先確認(rèn)隊(duì)列中的生產(chǎn)者是否存在
                    doesItemExist = this.queue.Count > 0;
                    if (doesItemExist)
                    {
                        nextItem = this.queue.Dequeue();
                    }
                    
                }
                //如果生產(chǎn)者存在，才消費(fèi)生產(chǎn)者
                if (doesItemExist)
                {
                    this.consumerAction(nextItem);
                }
                else//否則的話，再等等下一個(gè)隊(duì)列中的生產(chǎn)者
                {
                    this.queueWaitHandle.WaitOne();
                }
                
            }
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            //實(shí)例化一個(gè)int類型的生產(chǎn)消費(fèi)實(shí)例
            var producerConsumer = new ProducerConsumer<int>(i => Console.WriteLine("正在消費(fèi)" + i));
            Random random = new Random();
            //開(kāi)啟進(jìn)隊(duì)列線程
            var t1 = new Thread(() =>
            {
                for (int i = 0; i < 100; i++)
                {
                    producerConsumer.Enqueue(i);
                    Thread.Sleep(random.Next(0,5));
                }
            });
            var t2 = new Thread(() =>
            {
                for (int i = 0; i > -100; i--)
                {
                    producerConsumer.Enqueue(i);
                    Thread.Sleep(random.Next(0, 5));
                }
            });
            t1.Start();
            t2.Start();
            t1.Join();
            t2.Join();
            Thread.Sleep(50);
            Console.ReadKey();
        }
    }