Mercurial > cpython-lru_cache-weakref

annotate Include/traceback.h @ 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 7e3ed426962f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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7e58c060d534 ANSI-fication and Py_PROTO extermination.
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2 #ifndef Py_TRACEBACK_H
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3 #define Py_TRACEBACK_H
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4 #ifdef __cplusplus
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5 extern "C" {
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6 #endif
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7
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8 #include "pystate.h"
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10 struct _frame;
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12 /* Traceback interface */
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13 #ifndef Py_LIMITED_API
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14 typedef struct _traceback {
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15 PyObject_HEAD
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16 struct _traceback *tb_next;
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17 struct _frame *tb_frame;
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18 int tb_lasti;
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19 int tb_lineno;
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20 } PyTracebackObject;
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21 #endif
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22
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23 PyAPI_FUNC(int) PyTraceBack_Here(struct _frame *);
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24 PyAPI_FUNC(int) PyTraceBack_Print(PyObject *, PyObject *);
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25 #ifndef Py_LIMITED_API
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26 PyAPI_FUNC(int) _Py_DisplaySourceLine(PyObject *, PyObject *, int, int);
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27 #endif
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28
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29 /* Reveal traceback type so we can typecheck traceback objects */
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30 PyAPI_DATA(PyTypeObject) PyTraceBack_Type;
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31 #define PyTraceBack_Check(v) (Py_TYPE(v) == &PyTraceBack_Type)
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32
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33 /* Write the Python traceback into the file 'fd'. For example:
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34
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35 Traceback (most recent call first):
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36 File "xxx", line xxx in <xxx>
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37 File "xxx", line xxx in <xxx>
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38 ...
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39 File "xxx", line xxx in <xxx>
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40
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41 This function is written for debug purpose only, to dump the traceback in
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42 the worst case: after a segmentation fault, at fatal error, etc. That's why,
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43 it is very limited. Strings are truncated to 100 characters and encoded to
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44 ASCII with backslashreplace. It doesn't write the source code, only the
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45 function name, filename and line number of each frame. Write only the first
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46 100 frames: if the traceback is truncated, write the line " ...".
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48 This function is signal safe. */
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50 PyAPI_DATA(void) _Py_DumpTraceback(
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51 int fd,
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52 PyThreadState *tstate);
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53
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54 /* Write the traceback of all threads into the file 'fd'. current_thread can be
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55 NULL. Return NULL on success, or an error message on error.
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56
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57 This function is written for debug purpose only. It calls
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58 _Py_DumpTraceback() for each thread, and so has the same limitations. It
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59 only write the traceback of the first 100 threads: write "..." if there are
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60 more threads.
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61
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62 This function is signal safe. */
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63
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64 PyAPI_DATA(const char*) _Py_DumpTracebackThreads(
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65 int fd, PyInterpreterState *interp,
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66 PyThreadState *current_thread);
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68
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69 #ifdef __cplusplus
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70 }
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71 #endif
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72 #endif /* !Py_TRACEBACK_H */