How to support asynchronous access in custom Music Library

[Moshi0]

How exactly should i support asynchronous access in IAIMPMLDataProvider::GetData and IAIMPMLGroupingTreeDataProvider::GetData?
Do I use IAIMPMLDataStorageManager::BackgroundTaskStarted? And I cant block thread in GetData so what do I return?

[Artem]

You should bear in mind that these methods may be called from different threads, and at same time.

[Moshi0]

Oh ok, makes sense. I thought you had to somehow make the methods non blocking.
Thanks.