public void Execute(Task completedTask)
{
completedTask.RemoveContinuation(this);
if (completedTask.IsFaulted)
{
if (exceptions == null)
{
Interlocked.CompareExchange(ref exceptions, new ConcurrentLinkedQueue <Exception>(), null);
}
exceptions.Add(completedTask.Exception);
}
else if (completedTask.IsCanceled)
{
canceled = true;
}
bool isComplete = Interlocked.Decrement(ref counter) == 0;
if (!isComplete)
{
return;
}
if (exceptions != null)
{
owner.SetException(exceptions.AsEnumerable());
return;
}
if (canceled)
{
owner.SetCanceled();
return;
}
owner.SetResult(null);
}