使用AutoResetEvent同步两个线程

时间:2013-01-23 14:07:22

标签: c# multithreading autoresetevent

我正在尝试实施AutoResetEvent。为此,我使用了一个非常简单的类:

public class MyThreadTest
{
    static readonly AutoResetEvent thread1Step = new AutoResetEvent(false);
    static readonly AutoResetEvent thread2Step = new AutoResetEvent(false);

    void DisplayThread1()
    {
        while (true)
        {
            Console.WriteLine("Display Thread 1");

            Thread.Sleep(1000);
            thread1Step.Set();
            thread2Step.WaitOne();
        }
    }

    void DisplayThread2()
    {
        while (true)
        {
            Console.WriteLine("Display Thread 2");
            Thread.Sleep(1000);
            thread2Step.Set();
            thread1Step.WaitOne();
        }
    }

    void CreateThreads()
    {
        // construct two threads for our demonstration;
        Thread thread1 = new Thread(new ThreadStart(DisplayThread1));
        Thread thread2 = new Thread(new ThreadStart(DisplayThread2));

        // start them
        thread1.Start();
        thread2.Start();
    }

    public static void Main()
    {
        MyThreadTest StartMultiThreads = new MyThreadTest();
        StartMultiThreads.CreateThreads();
    }
}

但这不起作用。用法看起来非常简单,所以如果有人能够告诉我什么是错的,我会很感激,我在这里实现的逻辑问题在哪里。

1 个答案:

答案 0 :(得分:21)

问题不是很清楚,但我猜你是否希望它显示1,2,1,2 ...

然后试试这个:

public class MyThreadTest
{
    static readonly AutoResetEvent thread1Step = new AutoResetEvent(false);
    static readonly AutoResetEvent thread2Step = new AutoResetEvent(true);

    void DisplayThread1()
    {
        while (true)
        {
            thread2Step.WaitOne(); 
            Console.WriteLine("Display Thread 1");
            Thread.Sleep(1000);
            thread1Step.Set();
        }
    }

    void DisplayThread2()
    {
        while (true)
        {
            thread1Step.WaitOne(); 
            Console.WriteLine("Display Thread 2");
            Thread.Sleep(1000);
            thread2Step.Set();
        }
    }

    void CreateThreads()
    {
        // construct two threads for our demonstration;
        Thread thread1 = new Thread(new ThreadStart(DisplayThread1));
        Thread thread2 = new Thread(new ThreadStart(DisplayThread2));

        // start them
        thread1.Start();
        thread2.Start();
    }

    public static void Main()
    {
        MyThreadTest StartMultiThreads = new MyThreadTest();
        StartMultiThreads.CreateThreads();
    }
}