第一天 尝试Thread

一：Thread的使用

      我们知道这个类代表处理器线程，在Thread中有几个比较常用和重要的方法。

<1> sleep:  这个算是最简单的了。

<2> join:    这个可以让并发行处理变成串行化，什么意思呢？上代码说话最清楚。

class Test
{
    static void Main()
    {
        Thread t = new Thread(Run);

        t.Start();

        //Join相当于把Run方法内嵌如此
        t.Join();

        //该死的t.Join(),害的我主线程必须在你执行完后才能执行。
        Console.WriteLine("我是主线程:" + Thread.CurrentThread.GetHashCode());
    }

    static void Run()
    {
        //等待5s
        Thread.Sleep(5000);

        Console.WriteLine("我是线程：" + Thread.CurrentThread.GetHashCode());
    }
}

<3> Interrupt和Abort：这两个关键字都是用来强制终止线程，不过两者还是有区别的。

        ① Interrupt:  抛出的是 ThreadInterruptedException 异常。

                 Abort:  抛出的是  ThreadAbortException 异常。

        ② Interrupt：如果终止工作线程，只能管到一次，工作线程的下一次sleep就管不到了，相当于一个

                             contine操作。

                 Abort：这个就是相当于一个break操作，工作线程彻底死掉。 

    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("我是主线程：" + Thread.CurrentThread.GetHashCode());
            Thread t = new Thread(new ThreadStart(Run));
            t.Start();
            t.Interrupt();
            Console.WriteLine("我是主线程:" + Thread.CurrentThread.GetHashCode());
            Console.ReadLine();
        }
        static void Run()
        {
            Console.WriteLine("我是线程:" + Thread.CurrentThread.GetHashCode());
            for (int i = 1; i <= 3; i++)
            {
                Stopwatch watch = new Stopwatch();
                try
                {
                    watch.Start();
                    Console.WriteLine("我是线程:" + Thread.CurrentThread.GetHashCode());
                    Thread.Sleep(2000);
                    watch.Stop();
                    Console.WriteLine("第{0}延迟执行：{1}ms", i, watch.ElapsedMilliseconds);
                }
                catch (ThreadInterruptedException e)
                {
                    Console.WriteLine("第{0}延迟执行：{1}ms,抛出异常", i, watch.ElapsedMilliseconds);
                }
            }
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("我是主线程：" + Thread.CurrentThread.GetHashCode());
            Thread t = new Thread(new ThreadStart(Run));
            t.Start();
            t.Abort();
            Console.WriteLine("我是主线程:" + Thread.CurrentThread.GetHashCode());
            Console.ReadLine();
            
        }
        static void Run()
        {
            Console.WriteLine("我是线程:" + Thread.CurrentThread.GetHashCode());
            for (int i = 1; i <= 3; i++)
            {
                Stopwatch watch = new Stopwatch();
                try
                {
                    watch.Start();
                    Console.WriteLine("我是线程:" + Thread.CurrentThread.GetHashCode());
                    Thread.Sleep(2000);
                    watch.Stop();
                    Console.WriteLine("第{0}延迟执行：{1}ms", i, watch.ElapsedMilliseconds);
                }
                catch (ThreadInterruptedException e)
                {
                    Console.WriteLine("第{0}延迟执行：{1}ms,抛出异常", i, watch.ElapsedMilliseconds);
                }
            }
        }
    }