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 a06fc2c2342a
children
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1
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2 /* Dummy frozen modules initializer */
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3
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4 #include "Python.h"
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5 #include "importlib.h"
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7 /* In order to test the support for frozen modules, by default we
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8 define a single frozen module, __hello__. Loading it will print
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9 some famous words... */
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11 /* To regenerate this data after the bytecode or marshal format has changed,
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12 go to ../Tools/freeze/ and freeze the flag.py file; then copy and paste
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13 the appropriate bytes from M___main__.c. */
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14
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15 static unsigned char M___hello__[] = {
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16 99,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,
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17 0,64,0,0,0,115,20,0,0,0,100,2,0,90,1,0,
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18 101,2,0,100,0,0,131,1,0,1,100,1,0,83,40,3,
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19 0,0,0,117,12,0,0,0,72,101,108,108,111,32,119,111,
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20 114,108,100,33,78,84,40,3,0,0,0,117,4,0,0,0,
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21 84,114,117,101,117,11,0,0,0,105,110,105,116,105,97,108,
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22 105,122,101,100,117,5,0,0,0,112,114,105,110,116,40,0,
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23 0,0,0,40,0,0,0,0,40,0,0,0,0,117,7,0,
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24 0,0,102,108,97,103,46,112,121,117,8,0,0,0,60,109,
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25 111,100,117,108,101,62,1,0,0,0,115,2,0,0,0,6,
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26 1,
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27 };
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29 #define SIZE (int)sizeof(M___hello__)
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31 static const struct _frozen _PyImport_FrozenModules[] = {
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32 /* importlib */
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33 {"_frozen_importlib", _Py_M__importlib, (int)sizeof(_Py_M__importlib)},
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34 /* Test module */
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35 {"__hello__", M___hello__, SIZE},
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36 /* Test package (negative size indicates package-ness) */
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37 {"__phello__", M___hello__, -SIZE},
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38 {"__phello__.spam", M___hello__, SIZE},
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39 {0, 0, 0} /* sentinel */
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40 };
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42 /* Embedding apps may change this pointer to point to their favorite
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43 collection of frozen modules: */
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44
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45 const struct _frozen *PyImport_FrozenModules = _PyImport_FrozenModules;