异步回调主线程等待子线程结束

最新推荐文章于 2025-01-14 14:08:18 发布

晨土飞扬

最新推荐文章于 2025-01-14 14:08:18 发布

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分类专栏： C# 文章标签： object button thread

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本文探讨了使用静态时间跨度和等待句柄实现线程同步的并发编程技术，包括线程池任务调度、等待时间控制及多线程间的协调。

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static TimeSpan waitTime = new TimeSpan(0, 0, 5);
        static WaitHandle[] waitHandles = new WaitHandle[]
{
   new AutoResetEvent(false)
//new AutoResetEvent(false)
   };
        Thread th;

        private void button1_Click(object sender, EventArgs e)
        {
            //DateTime dt = DateTime.Now;

            ThreadPool.QueueUserWorkItem(new WaitCallback(DoTask), waitHandles[0]);

            WaitHandle.WaitAll(waitHandles);

          // dt = DateTime.Now;

            ThreadPool.QueueUserWorkItem(new WaitCallback(DoTask), waitHandles[0]);

            int index = WaitHandle.WaitAny(waitHandles);

        }
        static void DoTask(Object state)
        {
            AutoResetEvent are = (AutoResetEvent)state;
            Thread.Sleep(5000);
            //int time = 1000 * r.Next(2, 10);
           // Console.WriteLine("Performing a task for {0} milliseconds.", time);
           // Thread.Sleep(time);
            are.Set();
        }

        static void Work()
        {

            Thread.Sleep(waitTime);

}