public Task WaitAny()
{
if (_storage == null)
{
return(Task.Completed());
}
if (!_isStorageRing)
{
StorageAsTask.Wait();
}
var handles = new WaitHandle[StorageAsRing.Count];
int i = 0;
foreach (Task task in StorageAsRing)
{
if (task == null)
{
throw new ArgumentNullException();
}
if (task.IsComplete)
{
return(task);
}
if (!TaskContinuationManager.ScheduleAntecedent(task))
{
task.Schedule();
}
//BUG?: we need to handle completed tasks
handles[i++] = task.CompletionHandle;
}
var index = WaitHandle.WaitAny(handles);
return((Task)StorageAsRing.FindAtIndex(index)
.Value);
}
public void Dispose()
{
if (_isStorageRing && _storage != null)
{
StorageAsRing.Clear();
}
}
public WaitList(params Task[] tasks)
{
if (tasks == null)
{
throw new ArgumentNullException("tasks");
}
_storage = new Ring();
foreach (Task task in tasks)
{
if (task == null)
{
throw new ArgumentNullException("task");
}
StorageAsRing.InsertTail(task);
}
}
public void Add(Task task)
{
if (task == null)
{
throw new ArgumentNullException();
}
lock (this) {
if (_storage == null)
{
_storage = task;
}
else if (!_isStorageRing)
{
_storage = new Ring(_storage, task);
_isStorageRing = true;
}
else
{
StorageAsRing.InsertTail(task);
}
}
}