private static void InvokeSchedulable(IAsyncOperation op, IAsyncSchedulable s)
{
if (op.IsCompletedSuccessfully)
{
s.Start();
}
else
{
s.Cancel();
}
}
/// <summary>
/// Schedules a <paramref name="continuation"/> to be started (or cancelled in case of the operatino failure) after the operation has completed.
/// If the operation is completed <paramref name="continuation"/> is invoked on the <paramref name="syncContext"/> specified.
/// </summary>
/// <remarks>
/// The <paramref name="continuation"/> is invoked on a <see cref="SynchronizationContext"/> specified. Throwing an exception from the callback might cause unspecified behaviour.
/// </remarks>
/// <param name="continuation">The continuation to be executed when the operation has completed.</param>
/// <param name="syncContext">If not <see langword="null"/> method attempts to marshal the continuation to the synchronization context.
/// Otherwise the callback is invoked on a thread that initiated the operation completion.
/// </param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="continuation"/> is <see langword="null"/>.</exception>
/// <exception cref="ObjectDisposedException">Thrown is the operation has been disposed.</exception>
public void Schedule(IAsyncSchedulable continuation, SynchronizationContext syncContext)
{
ThrowIfDisposed();
if (continuation == null)
{
throw new ArgumentNullException(nameof(continuation));
}
if (!TryAddCallback(continuation, syncContext, true))
{
InvokeCompletionCallback(continuation, syncContext);
}
}
/// <summary>
/// Schedules a <paramref name="continuation"/> to be started (or cancelled in case of the operatino failure) after the operation has completed.
/// If the operation is already completed the <paramref name="continuation"/> is called synchronously.
/// </summary>
/// <remarks>
/// The <paramref name="continuation"/> is invoked on a thread that registered the continuation (if it has a <see cref="SynchronizationContext"/> attached).
/// Throwing an exception from the callback might cause unspecified behaviour.
/// </remarks>
/// <param name="continuation">The continuation to be executed when the operation has completed.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="continuation"/> is <see langword="null"/>.</exception>
/// <exception cref="ObjectDisposedException">Thrown is the operation has been disposed.</exception>
public void Schedule(IAsyncSchedulable continuation)
{
Schedule(continuation, SynchronizationContext.Current);
}
/// <summary>
/// Schedules a continuation to run after the lazy operation succeeds.
/// </summary>
/// <param name="continuation">A continuation to schedule after this operation completes.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="continuation"/> value is <see langword="null"/>.</exception>
/// <exception cref="InvalidOperationException">Thrown if <see cref="OperationFactory"/> is <see langword="null"/>.</exception>
public void Schedule(IAsyncSchedulable continuation)
{
StartOrUpdate().Schedule(continuation);
}