Cross-interpreter support for efficient sharing of frozendicts

Feature or enhancement

Proposal:

The concurrent.interpreters module for subinterpreters handles sharing/sending values across interpreters with direct sharing of some basic immutable types, and a fallback to pickling others. As an immutable container, tuples are supported (as long as all items are themselves shareable). Similarly, I think it would be good to support sharing frozendict without serialization (if keys & values are shareable).

Because dictionaries are so fundamental and common, having a better and more performant way to share such a mapping would significantly improve the experience of using concurrent.interpreters and InterpreterPoolExecutor.

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

Beginne damit, die Dokumentation von concurrent.interpreters zum Teilen von Objekten und die bestehende Behandlung teilbarer Tupel und Mappings im Modul zu lesen. Ermittle, wie das Teilen von frozendict funktionieren könnte, wenn alle Schlüssel und Werte teilbar sind; als erledigt gilt die Unterstützung von Werten, die Interpreter ohne Pickling überqueren, wobei das Verhalten durch relevante Tests abgedeckt ist.