[issue26154] Add private _PyThreadState_UncheckedGet() to get the current thread state

[Wenzel Jakob]

Wenzel Jakob added the comment:

I've also run into this regression. FWIW this is what I've ended up using to work around it (it's a mess, but what are we to do..)

#if PY_VERSION_HEX >= 0x03050000 && PY_VERSION_HEX < 0x03050200
extern "C" {
    /* Manually import _PyThreadState_Current symbol */
    struct _Py_atomic_address { void *value; };
    PyAPI_DATA(_Py_atomic_address) _PyThreadState_Current;
};
#endif

PyThreadState *get_thread_state_unchecked() {
#if   PY_VERSION_HEX < 0x03000000
    return _PyThreadState_Current;
#elif PY_VERSION_HEX < 0x03050000
    return (PyThreadState*) _Py_atomic_load_relaxed(&_PyThreadState_Current);
#elif PY_VERSION_HEX < 0x03050200
    return (PyThreadState*) _PyThreadState_Current.value;
#else
    return _PyThreadState_UncheckedGet();
#endif
}

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nosy: +wenzel

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<http://bugs.python.org/issue26154>
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