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 cab14be0ada1
children
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180c1d3dac41 A directory with a working example of how to build an extension.
Guido van Rossum <guido@python.org>
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1 #include "Python.h"
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2
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3 static PyObject *
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4 ex_foo(PyObject *self, PyObject *args)
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5 {
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6 printf("Hello, world\n");
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7 Py_INCREF(Py_None);
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8 return Py_None;
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9 }
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11 static PyMethodDef example_methods[] = {
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12 {"foo", ex_foo, METH_VARARGS, "foo() doc string"},
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13 {NULL, NULL}
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14 };
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15
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16 static struct PyModuleDef examplemodule = {
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17 PyModuleDef_HEAD_INIT,
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18 "example",
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19 "example module doc string",
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20 -1,
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21 example_methods,
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22 NULL,
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23 NULL,
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24 NULL,
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25 NULL
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26 };
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27
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28 PyMODINIT_FUNC
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29 PyInit_example(void)
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30 {
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31 return PyModule_Create(&examplemodule);
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32 }