c# 多线程 读写分离

class Program
    {
        private static ReaderWriterLockSlim _LockSlim = new ReaderWriterLockSlim();
        private static Hashtable list = Hashtable.Synchronized(new Hashtable());

        static void Main(string[] args)
        {
            new Thread(new ParameterizedThreadStart(delegate(object obj) {
                Write(0, 10000);
            })).Start();

            Thread.Sleep(1000);

            new Thread(new ParameterizedThreadStart(delegate(object obj)
            {
                Read(1, 1000);
            })).Start();

            new Thread(new ParameterizedThreadStart(delegate(object obj)
            {
                Read(2, 1000);
            })).Start();

            new Thread(new ParameterizedThreadStart(delegate(object obj)
            {
                Read(3, 1000);
            })).Start();

            new Thread(new ParameterizedThreadStart(delegate(object obj)
            {
                Read(4, 1000);
            })).Start();

            Console.ReadKey();
        }

        /// <summary>
        /// 对于i相同的线程进行阻塞保证不会并行多个
        /// </summary>
        /// <param name="i"></param>
        /// <param name="j"></param>
        public static void Read(int i,int j)
        {
            Console.WriteLine(DateTime.Now.ToString() + "\t线程" + i.ToString() + "即将进入读取状态");
            _LockSlim.EnterReadLock();
            Console.WriteLine(DateTime.Now.ToString() + "\t线程" + i.ToString() + "进入读取状态");
            
            Thread.Sleep(j);

            _LockSlim.ExitReadLock();
            Console.WriteLine(DateTime.Now.ToString() + "\t线程" + i.ToString() + "退出读取状态");
        }

        public static void Write(int i, int j)
        {
            Console.WriteLine(DateTime.Now.ToString() + "\t线程" + i.ToString() + "即将进入写入状态");
            _LockSlim.EnterWriteLock();
            Console.WriteLine(DateTime.Now.ToString() + "\t线程" + i.ToString() + "进入写入状态");

            Thread.Sleep(j);

            _LockSlim.ExitWriteLock();
            Console.WriteLine(DateTime.Now.ToString() + "\t线程" + i.ToString() + "退出写入状态");
        }


    }

2017/2/20 17:51:55      线程0即将进入写入状态
2017/2/20 17:51:55      线程0进入写入状态
2017/2/20 17:51:56      线程1即将进入读取状态
2017/2/20 17:51:56      线程2即将进入读取状态
2017/2/20 17:51:56      线程3即将进入读取状态
2017/2/20 17:51:56      线程4即将进入读取状态
2017/2/20 17:52:05      线程1进入读取状态
2017/2/20 17:52:05      线程4进入读取状态
2017/2/20 17:52:05      线程0退出写入状态
2017/2/20 17:52:05      线程2进入读取状态
2017/2/20 17:52:05      线程3进入读取状态
2017/2/20 17:52:06      线程2退出读取状态
2017/2/20 17:52:06      线程1退出读取状态
2017/2/20 17:52:06      线程4退出读取状态
2017/2/20 17:52:06      线程3退出读取状态