Mercurial > cpython-lru_cache-weakref

annotate Python/strdup.c @ 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 e7f6cef7a4cc
children
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Guido van Rossum <guido@python.org>
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1 /* strdup() replacement (from stdwin, if you must know) */
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2
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8efa37a770c6 Patches by William Lewis for Nextstep descendants.
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3 #include "pgenheaders.h"
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5 char *
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f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
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6 strdup(const char *str)
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7 {
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8 if (str != NULL) {
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e7f6cef7a4cc Issue #18722: Remove uses of the "register" keyword in C code.
Antoine Pitrou <solipsis@pitrou.net>
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9 char *copy = malloc(strlen(str) + 1);
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10 if (copy != NULL)
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11 return strcpy(copy, str);
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12 }
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13 return NULL;
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14 }