CancellationTokenSource与volatile布尔值 [英] CancellationTokenSource vs. volatile boolean

问题描述

使用volatile 布尔字段中，通过noa 任务完成吗？

Are there any benefits for using a CancellationTokenSource over a volatile boolean field for signalling a Task to finish?

推荐答案

当然可以。有许多。我将列出一些。

Of course yes. There are many. I'll list few.

• CancellationToken 支持回调。当请求取消时，您会收到通知。


• CancellationToken 支持 WaitHandle


• 您可以使用 CancellationTokenSource安排取消 CancellationToken .CancelAfter 方法。


• 您可以将您的 CancellationToken 链接到另一个，这样当一个取消时，另一个可以视为已取消。


• 通过 Task 表示 System.Threading.Tasks.Task 布尔变量不能将任务的状态转换为已取消，但是 CancellationToken 可以。

• CancellationToken supports callbacks. You can be notified when the cancellation is requested.
• CancellationToken supports WaitHandle which you could wait for indefinitely or with a timeout.
• You can schedule the cancelation of CancellationToken using CancellationTokenSource.CancelAfter method.
• You can link your CancellationToken to another, so that when one is cancelled another can be considered as cancelled.
• By Task if you mean System.Threading.Tasks.Task a volatile boolean cannot transition the state of the Task to cancelled but CancellationToken can.

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