[issue38160] Add a "PyInterpreterState *" field to PyTypeObject.

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

> No, but it means that a type A *knows* that it was created in interpreter 1 without relying on the current thread local storage.

What's wrong with _PyInterpreterState_GET_UNSAFE()?

This macro is based on _Py_atomic_load_relaxed(&_PyRuntime.gilstate.tstate_current).

If this atomic variable is an issue, do we need a better solution to get the current thread state and get the current interpreter?

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38160>
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