C# Lock锁(个人随记)_.net

C# Lock锁(个人随记)

先看看为什么要用锁

需求:多线程处理值的加减

        static int nolockdata = 0;

        public static void nolocknormaltest(int threadindex)
        {
            
            while (true)//这是脑残设计,while(true)
            {
                //lock (locknormal)
                {
                    nolockdata++;
                    debug.print("{0}无锁状态的+值{1}", threadindex, nolockdata);
                    nolockdata--;
                    debug.print("{0}无锁状态的-值{1}", threadindex, nolockdata);
                }
                thread.sleep(1);//让我们养成良好习惯,每一个while都要休息下
            }
        }

            new thread(() =>{ nolocknormaltest(1); }){ isbackground=true}.start();
            new thread(() =>{ nolocknormaltest(2); }){ isbackground=true}.start();
            new thread(() =>{ nolocknormaltest(3); }){ isbackground=true}.start();
            new thread(() =>{ nolocknormaltest(4); }) { isbackground=true}.start();

这个时候值是乱的

引入第一种锁lock

 /// <summary>
        /// 声明一个应用object变量,不能值变量,别问,问就是object变量,养成习惯,static 是因为我在控制台
        /// </summary>
        private static object locknormal = new object();

public static void locknormaltest(int threadindex)
        {
            while (true)//这是脑残设计,while(true)
            {
                lock (locknormal)
                {
                    nolockdata++;
                    debug.print("{0}无锁状态的+值{1}", threadindex, nolockdata);
                    nolockdata--;
                    debug.print("{0}无锁状态的-值{1}", threadindex, nolockdata);
                }
                thread.sleep(1);//让我们养成良好习惯,每一个while都要休息下
            }
        }