[ros-dev] Registry and ObjectManager (was FreeLdr Part II)

[Hartmut Birr]

Thomas Weidenmueller schrieb:

>> The problem is, the first reference is never removed and
>> it is not possible to dereference (delete) the parent.
>>
> imo a key should always hold a reference to it's parent and
> dereference it when deleted (in the deletion callback), that would
> automatically delete all no longer used keys since they'd always
> dereference their parent, which might dereference even more keys
> nearer to the root key. 

In this case a key object is never removed, because nobody can remove
the keep-alive reference. We can use a worker thread which scans
periodically the registry and dereference all key objects which have
only the keep-alive reference.

- Hartmut