public Task ContinueWhenAny(Task[] tasks, Action <Task> continuationAction, CancellationToken cancellationToken, TaskContinuationOptions continuationOptions, TaskScheduler scheduler)
{
if (tasks == null)
{
throw new ArgumentNullException("tasks");
}
if (tasks.Length == 0)
{
throw new ArgumentException("The tasks argument contains no tasks", "tasks");
}
foreach (var ta in tasks)
{
if (ta == null)
{
throw new ArgumentException("The tasks argument constains a null value", "tasks");
}
}
if (continuationAction == null)
{
throw new ArgumentNullException("continuationAction");
}
var t = new Task <int> (l =>
{
var data = (Tuple <Task[], CancellationToken>)l;
return(Task.WaitAny(data.Item1, data.Item2));
}, Tuple.Create(tasks, cancellationToken));
var cont = t.ContinueWith(TaskActionInvoker.Create(continuationAction, tasks), cancellationToken, continuationOptions, scheduler);
t.Start(scheduler);
return(cont);
}
internal static void HandleOnCompleted(Task task, Action continuation, bool continueOnSourceContext, bool manageContext)
{
if (continueOnSourceContext && SynchronizationContext.Current != null && SynchronizationContext.Current.GetType() != typeof(SynchronizationContext))
{
task.ContinueWith(new SynchronizationContextContinuation(continuation, SynchronizationContext.Current));
}
else
{
IContinuation cont;
Task cont_task;
if (continueOnSourceContext && !TaskScheduler.IsDefault)
{
cont_task = new Task(TaskActionInvoker.Create(continuation), null, CancellationToken.None, TaskCreationOptions.None, null);
cont_task.SetupScheduler(TaskScheduler.Current);
cont = new SchedulerAwaitContinuation(cont_task);
}
else
{
cont_task = null;
cont = new AwaiterActionContinuation(continuation);
}
if (task.ContinueWith(cont, false))
{
return;
}
if (cont_task == null)
{
cont_task = new Task(TaskActionInvoker.Create(continuation), null, CancellationToken.None, TaskCreationOptions.None, null);
cont_task.SetupScheduler(TaskScheduler.Current);
}
cont_task.Schedule(true);
}
}