Mercurial > cpython-lru_cache-weakref

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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 e9af9b1ca67e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #ifndef Py_SLICEOBJECT_H
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2 #define Py_SLICEOBJECT_H
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3 #ifdef __cplusplus
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4 extern "C" {
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5 #endif
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6
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7 /* The unique ellipsis object "..." */
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8
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9 PyAPI_DATA(PyObject) _Py_EllipsisObject; /* Don't use this directly */
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10
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11 #define Py_Ellipsis (&_Py_EllipsisObject)
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12
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13 /* Slice object interface */
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14
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15 /*
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16
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17 A slice object containing start, stop, and step data members (the
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18 names are from range). After much talk with Guido, it was decided to
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19 let these be any arbitrary python type. Py_None stands for omitted values.
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20 */
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21 #ifndef Py_LIMITED_API
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22 typedef struct {
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23 PyObject_HEAD
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24 PyObject *start, *stop, *step; /* not NULL */
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25 } PySliceObject;
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26 #endif
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28 PyAPI_DATA(PyTypeObject) PySlice_Type;
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29 PyAPI_DATA(PyTypeObject) PyEllipsis_Type;
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31 #define PySlice_Check(op) (Py_TYPE(op) == &PySlice_Type)
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32
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33 PyAPI_FUNC(PyObject *) PySlice_New(PyObject* start, PyObject* stop,
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34 PyObject* step);
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35 #ifndef Py_LIMITED_API
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36 PyAPI_FUNC(PyObject *) _PySlice_FromIndices(Py_ssize_t start, Py_ssize_t stop);
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37 PyAPI_FUNC(int) _PySlice_GetLongIndices(PySliceObject *self, PyObject *length,
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38 PyObject **start_ptr, PyObject **stop_ptr,
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39 PyObject **step_ptr);
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40 #endif
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41 PyAPI_FUNC(int) PySlice_GetIndices(PyObject *r, Py_ssize_t length,
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42 Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step);
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43 PyAPI_FUNC(int) PySlice_GetIndicesEx(PyObject *r, Py_ssize_t length,
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44 Py_ssize_t *start, Py_ssize_t *stop,
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45 Py_ssize_t *step, Py_ssize_t *slicelength);
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46
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47 #ifdef __cplusplus
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48 }
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49 #endif
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50 #endif /* !Py_SLICEOBJECT_H */