如何在.NET 4.0中请求超时或取消之前"休眠"

Question

什么是睡了一定的时间,但能够被一个中断的最佳方式IsCancellationRequested从CancellationToken？

我正在寻找一个适用于.NET 4.0的解决方案.

我想写

void MyFunc (CancellationToken ct)
{
   //... 
   // simulate some long lasting operation that should be cancelable 
   Thread.Sleep(TimeSpan.FromMilliseconds(10000), ct); 
}

Answer 1

我刚刚在这里写博客:

CancellationToken和Thread.Sleep

简而言之:

var cancelled = token.WaitHandle.WaitOne(TimeSpan.FromSeconds(5));

在您的上下文中:

void MyFunc (CancellationToken ct)
{
   //... 
   // simulate some long lasting operation that should be cancelable 
   var cancelled = ct.WaitHandle.WaitOne(TimeSpan.FromSeconds(10));
}

Answer 2

或者,我认为这很清楚:

Task.Delay(waitTimeInMs, cancellationToken).Wait(cancellationToken);