cpython/Include/pyatomic.h

#ifndef Py_ATOMIC_H
#define Py_ATOMIC_H
#ifdef __cplusplus
extern "C" {
#endif

#ifndef Py_LIMITED_API
#define Py_CPYTHON_ATOMIC_H
#  include "cpython/pyatomic.h"
#  undef Py_CPYTHON_ATOMIC_H
#endif

#ifdef __cplusplus
}
#endif
#endif  /* !Py_ATOMIC_H */