Hands-On Parallel Programming with C# 8 and .NET Core 3

Creating a task using tokens

We can create a task by passing CancellationToken as the second argument to the task constructor, as follows:

var sumTaskViaTaskOfInt = new Task<int>(() => Sum(5), token);var sumTaskViaFactory = Task.Factory.StartNew<int>(() => Sum(5), token);var sumTaskViaTaskRun = Task.Run<int>(() => Sum(5), token);

In the classic threading model, we used to call the Abort() method on a thread that was non-deterministic. This would stop the thread abruptly, thereby leaking memory if resources were unmanaged. With TPL, we can call the Cancel method, which is a cancellation token source that will, in turn, set up the IsCancellationRequested property on the token. The underlying method that's being executed by the task should watch ...