Mercurial > cpython-lru_cache-weakref

annotate Python/pyfpe.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 2dea40e40d9d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
18835
2dea40e40d9d Patch #411138: Rename config.h to pyconfig.h. Closes bug #231774.
Martin v. Löwis <martin@v.loewis.de>
parents: 13658
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1 #include "pyconfig.h"
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bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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2 #include "pyfpe.h"
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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3 /*
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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4 * The signal handler for SIGFPE is actually declared in an external
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
parents:
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5 * module fpectl, or as preferred by the user. These variable
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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6 * definitions are required in order to compile Python without
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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7 * getting missing externals, but to actually handle SIGFPE requires
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
parents:
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8 * defining a handler and enabling generation of SIGFPE.
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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9 */
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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10
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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11 #ifdef WANT_SIGFPE_HANDLER
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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12 jmp_buf PyFPE_jbuf;
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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13 int PyFPE_counter = 0;
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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14 #endif
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Guido van Rossum <guido@python.org>
parents: 8822
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15
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Guido van Rossum <guido@python.org>
parents: 8822
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16 /* Have this outside the above #ifdef, since some picky ANSI compilers issue a
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Guido van Rossum <guido@python.org>
parents: 8822
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17 warning when compiling an empty file. */
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Guido van Rossum <guido@python.org>
parents: 8822
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18
ad6bc2c5d353 Restructure the file so that it is never empty. No longer needs
Guido van Rossum <guido@python.org>
parents: 8822
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19 double
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f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 9045
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20 PyFPE_dummy(void *dummy)
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Guido van Rossum <guido@python.org>
parents: 8822
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21 {
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Guido van Rossum <guido@python.org>
parents: 8822
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22 return 1.0;
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Guido van Rossum <guido@python.org>
parents: 8822
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23 }