/// <summary>
/// Disposes of the instance.
/// </summary>
public void Dispose()
{
lock (sync)
{
if (disposed)
{
return;
}
if (attempt != null)
{
attempt.Dispose();
attempt = null;
}
disposed = true;
}
}
/// <summary>
/// Returns a task that completes when the job is complete.
/// </summary>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public Task <TResult> WaitAsync(CancellationToken cancellationToken = default)
{
lock (sync)
{
if (disposed)
{
throw new ObjectDisposedException(nameof(AsyncJob <TResult>));
}
// entire job was canceled
cancellationToken.ThrowIfCancellationRequested();
// initialize attempt
if (attempt == null)
{
attempt = new AsyncJobAttempt(Work, Exit);
}
// subscribe new waiter
return(attempt.WaitAsync(cancellationToken));
}
}
/// <summary>
/// Invoked when the attempt exits early.
/// </summary>
void Exit()
{
lock (sync)
attempt = null;
}
