using System;using System.Collections.Generic;using System.Text;using System.Threading;namespace ConsoleApplication1{    class Program    {        static void Main(string[] args)        {            Thread newThread = new Thread(test);            newThread.Start("para input");            newThread = new Thread(test);            newThread.Start("para input");        }        public static void test(object ob)        {            lock (ob)            {                Console.WriteLine("do something");                Thread.Sleep(5000);            }        }    }}

输出结果为：首先输出 do something,过5秒后输出下一个do something.

using System;using System.Collections.Generic;using System.Text;using System.Threading;namespace ConsoleApplication1{    class Program    {        static void Main(string[] args)        {            Thread newThread = new Thread(test);            newThread.Start("para input");            newThread = new Thread(test);            newThread.Start("para output");        }        public static void test(object ob)        {            lock (ob)            {                Console.WriteLine("do something");                Thread.Sleep(5000);            }        }    }}

如果使用不同的参数，则不会实现互斥，两个输出语句do something同时出现。