Mercurial > cpython-lru_cache-weakref

annotate Include/classobject.h @ 87690:66c1c9f32567 default tip

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 62b61abd02b8
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Former class object interface -- now only bound methods are here */
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3 /* Revealing some structures (not for general use) */
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5 #ifndef Py_LIMITED_API
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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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11
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12 typedef struct {
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13 PyObject_HEAD
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14 PyObject *im_func; /* The callable object implementing the method */
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15 PyObject *im_self; /* The instance it is bound to */
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16 PyObject *im_weakreflist; /* List of weak references */
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17 } PyMethodObject;
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18
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19 PyAPI_DATA(PyTypeObject) PyMethod_Type;
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21 #define PyMethod_Check(op) ((op)->ob_type == &PyMethod_Type)
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23 PyAPI_FUNC(PyObject *) PyMethod_New(PyObject *, PyObject *);
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25 PyAPI_FUNC(PyObject *) PyMethod_Function(PyObject *);
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26 PyAPI_FUNC(PyObject *) PyMethod_Self(PyObject *);
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28 /* Macros for direct access to these values. Type checks are *not*
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29 done, so use with care. */
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30 #define PyMethod_GET_FUNCTION(meth) \
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31 (((PyMethodObject *)meth) -> im_func)
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32 #define PyMethod_GET_SELF(meth) \
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33 (((PyMethodObject *)meth) -> im_self)
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35 PyAPI_FUNC(int) PyMethod_ClearFreeList(void);
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36
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37 typedef struct {
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38 PyObject_HEAD
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39 PyObject *func;
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40 } PyInstanceMethodObject;
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41
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42 PyAPI_DATA(PyTypeObject) PyInstanceMethod_Type;
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44 #define PyInstanceMethod_Check(op) ((op)->ob_type == &PyInstanceMethod_Type)
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46 PyAPI_FUNC(PyObject *) PyInstanceMethod_New(PyObject *);
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47 PyAPI_FUNC(PyObject *) PyInstanceMethod_Function(PyObject *);
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48
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49 /* Macros for direct access to these values. Type checks are *not*
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50 done, so use with care. */
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51 #define PyInstanceMethod_GET_FUNCTION(meth) \
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52 (((PyInstanceMethodObject *)meth) -> func)
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53
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54 #ifdef __cplusplus
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55 }
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56 #endif
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57 #endif /* !Py_CLASSOBJECT_H */
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58 #endif /* Py_LIMITED_API */