Question

是否有一种简单的方法可以检查是否有任何线程正在等待特定的ManualResetEvent 要设置的对象？在我看来，计算机必须以某种方式保持队列暂停后续恢复的线程，所以我只是希望做明显的访问这个清单（只是为了检查它是否为空）......但我找不到了查看Microsoft相关的Threading / WaitHandle / Monitor帮助页面的方法。

测试代码如下。我只想更换丑陋的手表柜台。

using System;
using System.Threading;

namespace demo
{
class Program
{
    static void Main()
    {
        var gate = new ManualResetEvent(false);
        int uglyWaiters = 0;  // I want to stop using this variable and instead use something built into ManualResetEvent

        new Thread(() =>
        {
            for (int i = 0; i < 5; i++)
            {
                Console.WriteLine("a" + i);
                uglyWaiters++;
                gate.WaitOne();
                uglyWaiters--;
                Thread.Sleep(400);
            }
        }).Start();

        new Thread(() =>
        {
            for (int i = 0; i < 5; i++)
            {
                Console.WriteLine("b" + i);
                uglyWaiters++;
                gate.WaitOne();
                uglyWaiters--;
                Thread.Sleep(500);
            }
        }).Start();

        for (int count = 0; count < 15; count++)
        {
            Console.WriteLine(uglyWaiters + " threads waiting at t=" + count*230 + "ms");
            gate.Set(); Thread.Sleep(30); gate.Reset();
            Thread.Sleep(200);
        }
        Console.ReadLine();
    }
}

}

谁在等待ManualResetEvent？

0 个答案: