Task를 취소하기

int input = 10;
var cancelTokenSource = new CancellationTokenSource();
var task = new Task<int>(() => TestF(input, cancelTokenSource.Token), cancelTokenSource.Token);

task.Start();            

cancelTokenSource.Cancel();
Debug.LogFormat("Cancel!");
Debug.LogFormat("Task Cancel : {0}", task.IsCanceled);

public int TestF(int p, CancellationToken token)
{
    if (p <= 0)
        throw new InvalidOperationException("Can not calculate by input data.");

    int count = 1;
    for (var i = 1; i <= p; i++)
    {
        if (token.IsCancellationRequested)
        {
            throw new OperationCanceledException(token);
            return count;
        }

        count = count + i;
        Debug.Log(count);
        Thread.Sleep(100);
    }
    return n;
}

CancellationTokenSource 생성

IsCancellationRequested 을 체크해서 종료.