public void SetCanceled()
{
if (!ApplyOperation(TaskStatus.Canceled, () => { source.Cancel(); source.CancelReal(); }))
{
ThrowInvalidException();
}
}
void CompletionExecutor(Task cont)
{
if (cont.Slot.Predicate != null && !cont.Slot.Predicate())
{
return;
}
if (!cont.Slot.Launched.TryRelaxedSet())
{
return;
}
if (!ContinuationStatusCheck(cont.Slot.Kind))
{
cont.CancelReal();
cont.Dispose();
return;
}
if ((cont.Slot.Kind & TaskContinuationOptions.ExecuteSynchronously) != 0)
{
cont.RunSynchronously(cont.scheduler);
}
else
{
cont.Schedule();
}
}
internal void ContinueWithCore(Task continuation, TaskContinuationOptions kind,
TaskScheduler scheduler, Func <bool> predicate)
{
// Already set the scheduler so that user can call Wait and that sort of stuff
continuation.scheduler = scheduler;
continuation.schedWait.Set();
continuation.status = TaskStatus.WaitingForActivation;
AtomicBoolean launched = new AtomicBoolean();
EventHandler action = delegate(object sender, EventArgs e) {
if (launched.TryRelaxedSet())
{
if (!predicate())
{
return;
}
if (!ContinuationStatusCheck(kind))
{
continuation.CancelReal();
continuation.Dispose();
return;
}
CheckAndSchedule(continuation, kind, scheduler, sender == null);
}
};
if (IsCompleted)
{
action(null, EventArgs.Empty);
return;
}
if (completed == null)
{
Interlocked.CompareExchange(ref completed, new ConcurrentQueue <EventHandler> (), null);
}
completed.Enqueue(action);
// Retry in case completion was achieved but event adding was too late
if (IsCompleted)
{
action(null, EventArgs.Empty);
}
}
public void Execute()
{
if (Interlocked.Decrement(ref counter) != 0)
{
return;
}
owner.Status = TaskStatus.Running;
bool canceled = false;
List <Exception> exceptions = null;
foreach (var task in tasks)
{
if (task.IsFaulted)
{
if (exceptions == null)
{
exceptions = new List <Exception> ();
}
exceptions.AddRange(task.Exception.InnerExceptions);
continue;
}
if (task.IsCanceled)
{
canceled = true;
}
}
if (exceptions != null)
{
owner.TrySetException(new AggregateException(exceptions), false, false);
return;
}
if (canceled)
{
owner.CancelReal();
return;
}
owner.Finish();
}
internal void ContinueWithCore(Task continuation, TaskContinuationOptions kind,
TaskScheduler scheduler, Func <bool> predicate)
{
// Already set the scheduler so that user can call Wait and that sort of stuff
continuation.taskScheduler = scheduler;
continuation.scheduler = ProxifyScheduler(scheduler);
AtomicBoolean launched = new AtomicBoolean();
EventHandler action = delegate {
if (!predicate())
{
return;
}
if (!launched.Value && !launched.Exchange(true))
{
if (!ContinuationStatusCheck(kind))
{
continuation.Cancel();
continuation.CancelReal();
continuation.Dispose();
return;
}
CheckAndSchedule(continuation, kind, scheduler);
}
};
if (IsCompleted)
{
action(this, EventArgs.Empty);
return;
}
completed += action;
// Retry in case completion was achieved but event adding was too late
if (IsCompleted)
{
action(this, EventArgs.Empty);
}
}
void CompletionExecutor(Task cont)
{
if (cont.Slot.Predicate != null && !cont.Slot.Predicate())
{
return;
}
if (!cont.Slot.Launched.TryRelaxedSet())
{
return;
}
if (!ContinuationStatusCheck(cont.Slot.Kind))
{
cont.CancelReal();
cont.Dispose();
return;
}
CheckAndSchedule(cont, cont.Slot.Kind, cont.scheduler, false);
}
public void Execute()
{
if (!ContinuationStatusCheck(continuationOptions))
{
task.CancelReal(notifyParent: true);
task.Dispose();
return;
}
if (task.IsCompleted)
{
return;
}
if ((continuationOptions & TaskContinuationOptions.ExecuteSynchronously) != 0)
{
task.RunSynchronouslyCore(task.scheduler, false);
}
else
{
task.Schedule(false);
}
}
public void Execute()
{
if (!ContinuationStatusCheck(continuationOptions))
{
task.CancelReal();
task.Dispose();
return;
}
// The task may have been canceled externally
if (task.IsCompleted)
{
return;
}
if ((continuationOptions & TaskContinuationOptions.ExecuteSynchronously) != 0)
{
task.RunSynchronouslyCore(task.scheduler, false);
}
else
{
task.Schedule(false);
}
}
static void SetCanceledAction(Task <TResult> source, object unused)
{
source.CancelReal();
}