Mercurial > cpython-lru_cache-weakref

annotate Include/classobject.h @ 25838:8540887bcec6 2.2

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Backport of 2.183: Fix memory leak in add_subclass() found by NealN with valgrind.
author Guido van Rossum <guido@python.org>
date Fri, 18 Oct 2002 13:42:21 +0000
parents f5532cc1514b
children 5fa8344d6e6f c1eb668525e1
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2 /* Class object interface */
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4 /* Revealing some structures (not for general use) */
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6 #ifndef Py_CLASSOBJECT_H
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7 #define Py_CLASSOBJECT_H
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8 #ifdef __cplusplus
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9 extern "C" {
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10 #endif
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12 typedef struct {
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13 PyObject_HEAD
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14 PyObject *cl_bases; /* A tuple of class objects */
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15 PyObject *cl_dict; /* A dictionary */
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16 PyObject *cl_name; /* A string */
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17 /* The following three are functions or NULL */
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18 PyObject *cl_getattr;
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19 PyObject *cl_setattr;
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20 PyObject *cl_delattr;
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21 } PyClassObject;
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23 typedef struct {
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24 PyObject_HEAD
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25 PyClassObject *in_class; /* The class object */
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26 PyObject *in_dict; /* A dictionary */
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27 PyObject *in_weakreflist; /* List of weak references */
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28 } PyInstanceObject;
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30 typedef struct {
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31 PyObject_HEAD
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32 PyObject *im_func; /* The callable object implementing the method */
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33 PyObject *im_self; /* The instance it is bound to, or NULL */
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34 PyObject *im_class; /* The class that asked for the method */
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35 PyObject *im_weakreflist; /* List of weak references */
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36 } PyMethodObject;
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38 extern DL_IMPORT(PyTypeObject) PyClass_Type, PyInstance_Type, PyMethod_Type;
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40 #define PyClass_Check(op) ((op)->ob_type == &PyClass_Type)
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41 #define PyInstance_Check(op) ((op)->ob_type == &PyInstance_Type)
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42 #define PyMethod_Check(op) ((op)->ob_type == &PyMethod_Type)
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44 extern DL_IMPORT(PyObject *) PyClass_New(PyObject *, PyObject *, PyObject *);
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45 extern DL_IMPORT(PyObject *) PyInstance_New(PyObject *, PyObject *,
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46 PyObject *);
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47 extern DL_IMPORT(PyObject *) PyInstance_NewRaw(PyObject *, PyObject *);
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48 extern DL_IMPORT(PyObject *) PyMethod_New(PyObject *, PyObject *, PyObject *);
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50 extern DL_IMPORT(PyObject *) PyMethod_Function(PyObject *);
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51 extern DL_IMPORT(PyObject *) PyMethod_Self(PyObject *);
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52 extern DL_IMPORT(PyObject *) PyMethod_Class(PyObject *);
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54 /* Macros for direct access to these values. Type checks are *not*
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55 done, so use with care. */
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56 #define PyMethod_GET_FUNCTION(meth) \
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57 (((PyMethodObject *)meth) -> im_func)
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58 #define PyMethod_GET_SELF(meth) \
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59 (((PyMethodObject *)meth) -> im_self)
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60 #define PyMethod_GET_CLASS(meth) \
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61 (((PyMethodObject *)meth) -> im_class)
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63 extern DL_IMPORT(int) PyClass_IsSubclass(PyObject *, PyObject *);
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66 #ifdef __cplusplus
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67 }
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68 #endif
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69 #endif /* !Py_CLASSOBJECT_H */