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  • 【进程线程与同步】5.4 System.Threading.Interlocked 为多个线程共享的变量提供原子操作

        using System;
        using System.Threading;
        internal class Program
        {
            private static long _counter = 1;
    
            private static void Main()
            {
                //下面程序显示两个线程如何并发访问一个名为counter的整形变量,一个线程让他递增5次,一个让他递减5次
                Console.WriteLine("原始值:{0}", _counter);
                var t1 = new Thread(F1);
                var t2 = new Thread(F2);
                t1.Start();
                t2.Start();
                t1.Join();
                t2.Join();
                Console.WriteLine("最终值:{0}", _counter);
                Console.Read();
            }
    
            private static void F1()
            {
                for (int i = 0; i < 5; i++)
                {
                    Interlocked.Increment(ref _counter);//原子性操作
                    Console.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ff") + " 方法1:counter++:{0}", _counter);
                    Thread.Sleep(10);
                }
            }
    
            private static void F2()
            {
                for (int i = 0; i < 5; i++)
                {
                    Interlocked.Decrement(ref _counter);//原子性操作
                    Console.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ff") + " 方法2:counter--:{0}", _counter);
                    Thread.Sleep(10);
                }
            }
        }

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  • 原文地址:https://www.cnblogs.com/zhangqs008/p/3618437.html
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