Function _PyInterpreterState_GetEvalFrameFunc 

pub unsafe extern "C" fn _PyInterpreterState_GetEvalFrameFunc(
    interp: *mut PyInterpreterState,
) -> unsafe extern "C" fn(*mut PyThreadState, *mut _PyInterpreterFrame, i32) -> *mut PyObject

Available on Py_3_11 and non-PyPy only.