多线程的使用

using System;
using System.Threading;

namespace _15._1thread
{
    class Program
    {
        public static void Test()
        {
            Console.WriteLine("{0}正在执行测试方法",Thread.CurrentThread.Name);
        }
        static void Main(string[] args)
        {
            ThreadStart threadWork = new ThreadStart(Test);
            Thread thread1 = new Thread(threadWork);
            thread1.Name = "线程1";
            Thread thread2 = new Thread(threadWork);
            thread2.Name = "线程2";
            Thread thread3 = new Thread(threadWork);
            thread3.Name = "线程3";
            //开始执行
            thread3.Start();
            thread2.Start();
            thread1.Start();
            Console.ReadKey();
        }
    }
}

一个可能的情况，因为多线程是并行的，不能确定每一次具体的运行情况

volatile易失域，多线程-卖票系统

    using System;
using System.Threading;

namespace _15._2volatile
{
    class Program
    {
        //定义易失域 车票数量
        public volatile static int tickets = 10;
        //卖票
        public static void SellTickets()
        {
            //票数大于10才能继续卖票
            while (tickets>0)
            {
                tickets--;
                Console.WriteLine("{0},卖了一张票，剩余票数{1}",Thread.CurrentThread.Name,tickets);
            }
        }
        static void Main(string[] args)
        {
            Thread thread1 = new Thread(SellTickets);
            thread1.Name = "窗口1";
            Thread thread2 = new Thread(SellTickets);
            thread2.Name = "窗口2";
            Thread thread3 = new Thread(SellTickets);
            thread3.Name = "窗口3";
            //开始执行
            thread1.Start();
            thread2.Start();
            thread3.Start();
            Console.ReadKey();
        }
    }
}

使用3个线程模拟3个售票窗口，虽然线程是并发的，但是他们对于易失域的访问时需要排队的，所以不会出现多卖票或者少卖票的情况，
可以定义为易失域的数据类型为：引用类型，数据值类型，枚举类型和bool类型