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#define _RESOLVE_MODINIT_FUNC_NAME(NAME) \
    PyInit_ ## NAME
#define RESOLVE_MODINIT_FUNC_NAME(NAME) \
    _RESOLVE_MODINIT_FUNC_NAME(NAME)
ensure_xid_class(PyTypeObject *cls, xidatafunc getdata)
    PyInterpreterState *interp = PyInterpreterState_Get();
    _PyXIData_lookup_context_t ctx;
    if (_PyXIData_GetLookupContext(interp, &ctx) < 0) {
        return -1;
    return _PyXIData_RegisterClass(&ctx, cls, getdata);
#ifdef REGISTERS_HEAP_TYPES
clear_xid_class(PyTypeObject *cls)
    PyInterpreterState *interp = PyInterpreterState_Get();
    _PyXIData_lookup_context_t ctx;
    if (_PyXIData_GetLookupContext(interp, &ctx) < 0) {
        return -1;
    return _PyXIData_UnregisterClass(&ctx, cls);
static inline int64_t
_get_interpid(_PyXIData_t *data)
    int64_t interpid;
    if (data != NULL) {
        interpid = _PyXIData_INTERPID(data);
        assert(!PyErr_Occurred());
        interpid = PyInterpreterState_GetID(PyInterpreterState_Get());
    return interpid;
/* unbound items ************************************************************/
#ifdef HAS_UNBOUND_ITEMS
#define UNBOUND_REMOVE 1
#define UNBOUND_ERROR 2
#define UNBOUND_REPLACE 3
// It would also be possible to add UNBOUND_REPLACE where the replacement
// value is user-provided.  There would be some limitations there, though.
// Another possibility would be something like UNBOUND_COPY, where the
// object is released but the underlying data is copied (with the "raw"
// allocator) and used when the item is popped off the queue.
check_unbound(int unboundop)
    switch (unboundop) {
    case UNBOUND_REMOVE:
    case UNBOUND_ERROR:
    case UNBOUND_REPLACE:
        return 1;
    default:
        return 0;

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