A pattern for self-cancelling and restarting task

Question

Is there a recommended established pattern for self-cancelling and restarting tasks?

E.g., I\'m working on the API for background spellchecker. The spellcheck sessio

Answer 1

Hope this will be useful - tried to create Helper class which can be re-used:

class SelfCancelRestartTask
{
    private Task _task = null;
    public CancellationTokenSource TokenSource { get; set; } = null;

    public SelfCancelRestartTask()
    {
    }

    public async Task Run(Action operation)
    {
        if (this._task != null &&
            !this._task.IsCanceled &&
            !this._task.IsCompleted &&
            !this._task.IsFaulted)
        {
            TokenSource?.Cancel();
            await this._task;
            TokenSource = new CancellationTokenSource();
        }
        else
        {
            TokenSource = new CancellationTokenSource();
        }
        this._task = Task.Run(operation, TokenSource.Token);
    }