在CountdownEvent中使用WaitHandle

Question

我有一个简单的应用程序来演示CountdownEvent。这很好，但是我想以某种方式设置CountDownEvent的WaitHandle并使用它。有可能吗？如何做到这一点呢？我想我应该注册WaitHandle并将其传递给CountDownEvent

public static CountdownEvent _countDwn = new CountdownEvent(3);

static void Main(string[] args)
{
    new Thread(say).Start("hello 1");
    new Thread(say).Start("hello 2");
    new Thread(say).Start("hello 3");
    _countDwn.Wait();

    Console.WriteLine("done");
    Console.ReadLine();   
}    

public static void Go(object data, bool timedOut)
{
    Console.WriteLine("Started - " + data);
    // Perform task...
}

public static void say(Object o)
{
    Thread.Sleep(4000);
    Console.WriteLine(o);
    _countDwn.Signal(); 
}

更新

我想用ManualResetEvent得到类似于示例的东西。无阻塞wait()

static ManualResetEvent _starter = new ManualResetEvent (false);

public static void Main()
{
  RegisteredWaitHandle reg = ThreadPool.RegisterWaitForSingleObject
                             (_starter, Go, "Some Data", -1, true);
  Thread.Sleep (5000);
  Console.WriteLine ("Signaling worker...");
  _starter.Set();
  Console.ReadLine();
  reg.Unregister (_starter);    // Clean up when we’re done.
}

public static void Go (object data, bool timedOut)
{
  Console.WriteLine ("Started - " + data);
  // Perform task...
}

Answer 1

您可以使用与ManualResetEvent相同的方法

 RegisteredWaitHandle reg = ThreadPool.RegisterWaitForSingleObject
                         (_countDwn.WaitHandle, Go, "Some Data", -1, true);
 /// ...

 reg.Unregister(_countDwn.WaitHandle);