Graceful invalidation of Python Node/Value/Block when C++ object is deleted (#50326)
Summary:
Previously we might have gotten segfaults and all, now it raises an exception.
Thread safety hasn't been an objective.
I have a followup to expand the Python interface for the API.
Fixes https://github.com/pytorch/pytorch/issues/49969.
wanchaol
Pull Request resolved: https://github.com/pytorch/pytorch/pull/50326
Reviewed By: pbelevich
Differential Revision: D26096234
Pulled By: gmagogsfm
fbshipit-source-id: 5425772002eb4deb3830ed51eaa3964f22505840
