mirror of https://github.com/python/cpython
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/* Weak references objects for Python. */
|
|
|
|
#ifndef Py_WEAKREFOBJECT_H
|
|
#define Py_WEAKREFOBJECT_H
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
typedef struct _PyWeakReference PyWeakReference;
|
|
|
|
struct _PyWeakReference {
|
|
PyObject_HEAD
|
|
PyObject *wr_object;
|
|
PyObject *wr_callback;
|
|
long hash;
|
|
PyWeakReference *wr_prev;
|
|
PyWeakReference *wr_next;
|
|
};
|
|
|
|
PyAPI_DATA(PyTypeObject) _PyWeakref_RefType;
|
|
PyAPI_DATA(PyTypeObject) _PyWeakref_ProxyType;
|
|
PyAPI_DATA(PyTypeObject) _PyWeakref_CallableProxyType;
|
|
|
|
#define PyWeakref_CheckRef(op) \
|
|
((op)->ob_type == &_PyWeakref_RefType)
|
|
#define PyWeakref_CheckProxy(op) \
|
|
(((op)->ob_type == &_PyWeakref_ProxyType) || \
|
|
((op)->ob_type == &_PyWeakref_CallableProxyType))
|
|
#define PyWeakref_Check(op) \
|
|
(PyWeakref_CheckRef(op) || PyWeakref_CheckProxy(op))
|
|
|
|
|
|
PyAPI_FUNC(PyObject *) PyWeakref_NewRef(PyObject *ob,
|
|
PyObject *callback);
|
|
PyAPI_FUNC(PyObject *) PyWeakref_NewProxy(PyObject *ob,
|
|
PyObject *callback);
|
|
PyAPI_FUNC(PyObject *) PyWeakref_GetObject(PyObject *ref);
|
|
|
|
PyAPI_FUNC(long) _PyWeakref_GetWeakrefCount(PyWeakReference *head);
|
|
|
|
#define PyWeakref_GET_OBJECT(ref) (((PyWeakReference *)(ref))->wr_object)
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif /* !Py_WEAKREFOBJECT_H */
|