单件模式 多线程

2010-8-19，做了个多线程的案例。有单件模式的多线程（方法：InstanceSingleTon）和计数的多线程（方法：Count）。

代码比较简单，主要是code单件模式，多线程同步，异步的概念。

贴代码如下：

 class Program
    {
        static void Main(string[] args)
        {

 

            Thread[] threads = new Thread[10];

 

            for (int i = 0; i < 10; i++)
            {
                threads[i] = new Thread(new ThreadStart(SingleTon.Count));
            }

 

            foreach (Thread t in threads)
            {
                t.Start();
            }

 

            Console.ReadLine();
        }
    }

 

    public class SingleTon
    {
        static int intIn = 0;

 

        public static SingleTon instance;
        private static object lockHelper = new object();

 

        private SingleTon()
        {
           
        }

 

        /// <summary>
        ///  计数。注释的lock代码是锁对象，实现多线程-同步操作。目的：按顺序显示索引值。1，2，3，4，5，6，7，8，9，10

        /// 现在的代码是多线程-异步操作。
        /// </summary>
        public static void Count()
        {
            //lock (lockHelper)
            //{
            //    Console.WriteLine("Current:" + Convert.ToString(++intIn));
            //}

 

            Console.WriteLine("Current:" + Convert.ToString(++intIn));
          
        }

 

        /// <summary>
        /// 单件模式，防止多线程-同步实例化
        /// </summary>
        /// <returns></returns>
        public static SingleTon InstanceSingleTon()
        {
            if (instance == null)
            {
                lock (lockHelper)
                {
                    if (instance==null)
                    {
                        instance = new SingleTon();
                    }
                }
            }
            return instance;
        }
    }