Mercurial > cpython-lru_cache-weakref
view Include/sliceobject.h @ 87690:66c1c9f32567 default tip
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 |
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#ifndef Py_SLICEOBJECT_H #define Py_SLICEOBJECT_H #ifdef __cplusplus extern "C" { #endif /* The unique ellipsis object "..." */ PyAPI_DATA(PyObject) _Py_EllipsisObject; /* Don't use this directly */ #define Py_Ellipsis (&_Py_EllipsisObject) /* Slice object interface */ /* A slice object containing start, stop, and step data members (the names are from range). After much talk with Guido, it was decided to let these be any arbitrary python type. Py_None stands for omitted values. */ #ifndef Py_LIMITED_API typedef struct { PyObject_HEAD PyObject *start, *stop, *step; /* not NULL */ } PySliceObject; #endif PyAPI_DATA(PyTypeObject) PySlice_Type; PyAPI_DATA(PyTypeObject) PyEllipsis_Type; #define PySlice_Check(op) (Py_TYPE(op) == &PySlice_Type) PyAPI_FUNC(PyObject *) PySlice_New(PyObject* start, PyObject* stop, PyObject* step); #ifndef Py_LIMITED_API PyAPI_FUNC(PyObject *) _PySlice_FromIndices(Py_ssize_t start, Py_ssize_t stop); PyAPI_FUNC(int) _PySlice_GetLongIndices(PySliceObject *self, PyObject *length, PyObject **start_ptr, PyObject **stop_ptr, PyObject **step_ptr); #endif PyAPI_FUNC(int) PySlice_GetIndices(PyObject *r, Py_ssize_t length, Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step); PyAPI_FUNC(int) PySlice_GetIndicesEx(PyObject *r, Py_ssize_t length, Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step, Py_ssize_t *slicelength); #ifdef __cplusplus } #endif #endif /* !Py_SLICEOBJECT_H */
