线程中AutoResetEvent与ManualResetEvent的区别

线程之间的通信是通过发信号来进行沟通的。、

ManualResetEvent发送Set信后后，需要手动Reset恢复初始状态。而对于AutoResetEvent来说，当发送完毕Set信号后，会自动Reset。

代码差别：

ManualResetEvent

    class ThreadClass
    {
        public static ManualResetEvent Manual1 = new ManualResetEvent(false);
        public static ManualResetEvent Manual2 = new ManualResetEvent(false);  //手动Reset
        static bool m_Err = false;
        static List<string> lists;
        static int iNum = 0;
        static void Main(string[] args)
        {
            lists = new List<string>();
            Thread thrd1 = new Thread(new ThreadStart(MethodSecond));
            thrd1.Name = "thread Second";
            thrd1.Start();
            Thread thrd12 = new Thread(() => { MethodFirst(); });
            thrd12.Name = "thread First";
            thrd12.Start();
        }
        private static void MethodFirst()
        {
            while (true)
            {
                Console.WriteLine("加 开始" + iNum.ToString());
                Thread.Sleep(1000);
                try
                {
                    for (int x = 0; x < iNum; x++)
                    {
                        lists.Add(x.ToString());
                        Console.WriteLine("加:" + x.ToString());
                    }
                }
                catch
                {
                    Console.WriteLine("错误");
                    m_Err = true;
                }
                Manual2.Set();
                Manual2.Reset();//手工Reset
                if (m_Err)
                {
                    Manual2.Set();
                    break;
                }
                Manual1.WaitOne();
            }
        }
        public static void MethodSecond()
        {
            Thread tr = Thread.CurrentThread;
            while (true)
            {
                iNum++;
                Console.WriteLine("减 等待");
                Manual2.WaitOne();

                Thread.Sleep(1000);

                try
                {

                    if (lists.Count > 0)
                    {
                        jian();
                    }
                }
                catch
                {
                    Console.WriteLine("错误");
                    m_Err = true;
                }
                Manual1.Set();
                Manual1.Reset(); //手工Rest
                if (m_Err)
                {
                    Manual1.Set();
                    break;
                }
            }

        }
        private static void jian()
        {
            Thread.Sleep(1000);
            Console.WriteLine("减" + lists[0]);
            lists.RemoveAt(0);
            if (lists.Count > 0)
            {
                jian();
            }
        }
    }

AutoResetEvent

    class Program
    {
        public static AutoResetEvent Auto1 = new AutoResetEvent(false);
        public static AutoResetEvent Auto2 = new AutoResetEvent(false);  
        static bool m_Err = false;
        static List<string> lists;
        static int iNum = 0;
        static void Main(string[] args)
        {
            lists = new List<string>();
            Thread thrd1 = new Thread(new ThreadStart(MethodSecond));
            thrd1.Name = "thread Second";
            thrd1.Start();
            Thread thrd12 = new Thread(() => { MethodFirst(); });
            thrd12.Name = "thread First";
            thrd12.Start();
        }
        private static void MethodFirst()
        {
            while (true)
            {
                Console.WriteLine();
                Console.WriteLine("加 开始" + iNum.ToString());
                Thread.Sleep(1000);
                try
                {
                    for (int x = 0; x < iNum; x++)
                    {
                        lists.Add(x.ToString());
                        Console.WriteLine("加:" + x.ToString());
                    }
                }
                catch
                {
                    Console.WriteLine("错误");
                    m_Err = true;
                }
                Auto2.Set();
                //Manual2.Reset(); 无需Reset
                if (m_Err)
                {
                    Auto2.Set();
                    break;
                }
                Auto1.WaitOne();
            }
        }
        public static void MethodSecond()
        {
            Thread tr = Thread.CurrentThread;
            while (true)
            {
                iNum++;
                Console.WriteLine("减 等待");
                
                Auto2.WaitOne();
                Thread.Sleep(1000);
                try
                {
                    if (lists.Count > 0)
                    {
                        jian();
                    }
                }
                catch
                {
                    Console.WriteLine("错误");
                    m_Err = true;
                }
                Auto1.Set();
               // Manual1.Reset();  //无需Reset
                if (m_Err)
                {
                    Auto1.Set();
                    break;
                }
            }
        }
        private static void jian()
        {
            Thread.Sleep(1000);
            Console.WriteLine("减" + lists[0]);
            lists.RemoveAt(0);
            if (lists.Count > 0)
            {
                jian();
            }
        }
    }