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annotate Include/classobject.h @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents 7b8ba019cd15
children
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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 PyObject *cl_weakreflist; /* List of weak references */
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22 } PyClassObject;
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24 typedef struct {
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25 PyObject_HEAD
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26 PyClassObject *in_class; /* The class object */
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27 PyObject *in_dict; /* A dictionary */
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28 PyObject *in_weakreflist; /* List of weak references */
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29 } PyInstanceObject;
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31 typedef struct {
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32 PyObject_HEAD
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33 PyObject *im_func; /* The callable object implementing the method */
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34 PyObject *im_self; /* The instance it is bound to, or NULL */
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35 PyObject *im_class; /* The class that asked for the method */
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36 PyObject *im_weakreflist; /* List of weak references */
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37 } PyMethodObject;
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38
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39 PyAPI_DATA(PyTypeObject) PyClass_Type, PyInstance_Type, PyMethod_Type;
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41 #define PyClass_Check(op) ((op)->ob_type == &PyClass_Type)
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42 #define PyInstance_Check(op) ((op)->ob_type == &PyInstance_Type)
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43 #define PyMethod_Check(op) ((op)->ob_type == &PyMethod_Type)
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45 PyAPI_FUNC(PyObject *) PyClass_New(PyObject *, PyObject *, PyObject *);
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46 PyAPI_FUNC(PyObject *) PyInstance_New(PyObject *, PyObject *,
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47 PyObject *);
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48 PyAPI_FUNC(PyObject *) PyInstance_NewRaw(PyObject *, PyObject *);
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49 PyAPI_FUNC(PyObject *) PyMethod_New(PyObject *, PyObject *, PyObject *);
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51 PyAPI_FUNC(PyObject *) PyMethod_Function(PyObject *);
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52 PyAPI_FUNC(PyObject *) PyMethod_Self(PyObject *);
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53 PyAPI_FUNC(PyObject *) PyMethod_Class(PyObject *);
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55 /* Look up attribute with name (a string) on instance object pinst, using
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56 * only the instance and base class dicts. If a descriptor is found in
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57 * a class dict, the descriptor is returned without calling it.
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58 * Returns NULL if nothing found, else a borrowed reference to the
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59 * value associated with name in the dict in which name was found.
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60 * The point of this routine is that it never calls arbitrary Python
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61 * code, so is always "safe": all it does is dict lookups. The function
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62 * can't fail, never sets an exception, and NULL is not an error (it just
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63 * means "not found").
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64 */
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65 PyAPI_FUNC(PyObject *) _PyInstance_Lookup(PyObject *pinst, PyObject *name);
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67 /* Macros for direct access to these values. Type checks are *not*
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68 done, so use with care. */
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69 #define PyMethod_GET_FUNCTION(meth) \
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70 (((PyMethodObject *)meth) -> im_func)
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71 #define PyMethod_GET_SELF(meth) \
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72 (((PyMethodObject *)meth) -> im_self)
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73 #define PyMethod_GET_CLASS(meth) \
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74 (((PyMethodObject *)meth) -> im_class)
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76 PyAPI_FUNC(int) PyClass_IsSubclass(PyObject *, PyObject *);
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78 PyAPI_FUNC(int) PyMethod_ClearFreeList(void);
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80 #ifdef __cplusplus
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81 }
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82 #endif
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83 #endif /* !Py_CLASSOBJECT_H */