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> PyThreadState_DeleteCurrent
No.
bpo-37878 explicitly excluded it from the limited C API. IMO it's too close to the CPython implementation and so must not be added to the stable ABI.
> Py_GetArgcArgv
No.
Python 3.10 now provides sys.orig_argv which can be read in C.
https://docs.python.org/dev/library/sys.html#sys.orig_argv
Py_GetArgcArgv() is part of the "legacy" C API to initialize Python. The "new" PyConfig API provides PyConfig.orig_argv.
FYI in the PyPI top 4000 projects, the function seems to be called by the following projects:
2021年02月18日/uWSGI-2.0.19.1.tar.gz
2021年02月18日/stem-1.8.0.tar.gz
2021年02月18日/sphinx-gallery-0.8.2.tar.gz
2021年02月18日/setproctitle-1.2.2.tar.gz
2021年02月18日/pyuwsgi-2.0.19.1.post0.tar.gz
2021年02月18日/mercurial-5.7.tar.gz
2021年02月18日/httpretty-1.0.5.tar.gz
2021年02月18日/CherryPy-18.6.0.tar.gz
2021年02月18日/aws-encryption-sdk-cli-2.1.0.tar.gz
> PyInterpreterState_GetID
Yes.
It's part of the limited C API. IMO technically, it's ok to add to the stable ABI. I added it to PC/python3dll.c on purpose. Sadly, it's not available on PyPy, but I don't think that the stable ABI must care about PyPy which is a different use case.