How Can I Gracefully Cancel Tasks in a Thread Pool Instead of Using Thread.Abort()?

The elegant treatment of the cancellation of the thread task

In multi -threaded applications, effective management and termination of tasks in threads are very important. In this example, you encountered a problem, that is, the .abort () on the thread could not terminate the associated task. To solve this problem, let's explore a recommendation method: use the cancellation mark.

Understand the thread pool and task behavior

When creating System.thReading.tasks, these tasks depend on the background thread management of thread pool management. Because resource leakage and application instability may be caused, it is not recommended to use .abort () to cancel these threads.

Use the cancellation mark to cancel the task

Rather than rely on .abort (), it is better to use the cancellation label as a more effective and controllable task to terminate method. The working principle is as follows: Create a CancellationTokenSource and disclose its CancellationToken property.

When initialize the task, pass the CancellationToken to its constructor or the StartNew method.

In the execution logic of the task, regularly check whether the CancellationToken.iscancellationRequsted logo has been set.
If the request is canceled, the execution and instructions elegantly (for example, through the log record).
• Example implementation
The following code example demonstrates how to use the cancellation mark:

In this example, the task will run indefinitely until the CancellationTokenSource.cancel () method is called to trigger the cancellation logic in the task and terminate its execution. The improved code avoids unnecessary statement nesting, making the code more concise and easy to read.

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