cpython/Include/internal/pycore_object_deferred.h

#ifndef Py_INTERNAL_OBJECT_DEFERRED_H
#define Py_INTERNAL_OBJECT_DEFERRED_H

#ifdef __cplusplus
extern "C" {
#endif

#include "pycore_gc.h"

#ifndef Py_BUILD_CORE
#  error "this header requires Py_BUILD_CORE define"
#endif

// Mark an object as supporting deferred reference counting. This is a no-op
// in the default (with GIL) build. Objects that use deferred reference
// counting should be tracked by the GC so that they are eventually collected.
extern void _PyObject_SetDeferredRefcount(PyObject *op);

static inline int
_PyObject_HasDeferredRefcount(PyObject *op)
{ … }

#ifdef __cplusplus
}
#endif
#endif  // !Py_INTERNAL_OBJECT_DEFERRED_H