多线程信号源_红绿灯

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using System.Threading;

namespace ConsoleApplication1
{
    class Program
    {
        static AutoResetEvent greenLight = new AutoResetEvent(false);
        static AutoResetEvent redLight = new AutoResetEvent(false);
        static void Main(string[] args)
        {
            Thread t1 = new Thread(new ThreadStart(M1));
            Thread t2 = new Thread(new ThreadStart(M2));

            t1.Start();
            t2.Start();

            //这个是主线程语句，相当于说现在是有3个线程。
            greenLight.Set();
        }

        static void M1()
        {
            while (true)
            {
                if (greenLight.WaitOne())
                {
                    Console.WriteLine("绿灯了。行人过马路！");
                    Thread.Sleep(3000);
                    redLight.Set();//红灯了
                }
            }
        }
        static void M2()
        {
            while (true)
            {
                if (redLight.WaitOne())
                {
                    Console.WriteLine("红灯了。行人等待！");
                    Thread.Sleep(3000);
                    greenLight.Set();
                }
            }
        }
    }
}