Function init_slots

include/pybind11/pybind11.h:1559–1585

/// Initialize an array of slots based on the supplied exec slot and options.
template <typename... Options>
inline slots_array init_slots(int (*exec_fn)(PyObject *), Options &&...options) noexcept {
    /* NOTE: slots_array MUST be large enough to hold all possible options.  If you add an option
    here, you MUST also increase the size of slots_array in the type alias above! */
    slots_array mod_def_slots;
    size_t next_slot = 0;

    mod_def_slots[next_slot++] = {Py_mod_create, reinterpret_cast<void *>(&cached_create_module)};

    if (exec_fn != nullptr) {
        mod_def_slots[next_slot++] = {Py_mod_exec, reinterpret_cast<void *>(exec_fn)};
    }

#ifdef Py_mod_multiple_interpreters
    mod_def_slots[next_slot++] = {Py_mod_multiple_interpreters, multi_interp_slot(options...)};
#endif

    if (gil_not_used_option(options...)) {
#if defined(Py_mod_gil) && defined(Py_GIL_DISABLED)
        mod_def_slots[next_slot++] = {Py_mod_gil, Py_MOD_GIL_NOT_USED};
#endif
    }

    // slots must have a zero end sentinel
    mod_def_slots[next_slot++] = {0, nullptr};

    return mod_def_slots;
}

PYBIND11_NAMESPACE_END(detail)