Mercurial > cpython-lru_cache-weakref

annotate Python/asdl.c @ 58689:514b56efd89a 3.1

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Merged revisions 77962 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/py3k ................ r77962 | r.david.murray | 2010-02-04 11:41:57 -0500 (Thu, 04 Feb 2010) | 17 lines Merged revisions 77943,77959-77960 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r77943 | r.david.murray | 2010-02-03 08:36:23 -0500 (Wed, 03 Feb 2010) | 2 lines Explicitly mention the default value for formatdate's usegmt parameter. ........ r77959 | nick.coghlan | 2010-02-04 07:43:58 -0500 (Thu, 04 Feb 2010) | 1 line Issue 6760: Clarify args handling for subprocess.Popen. Patch by Chris Rebert ........ r77960 | r.david.murray | 2010-02-04 11:33:31 -0500 (Thu, 04 Feb 2010) | 2 lines Add Chris Rebert to ACKS for issue 6760 Popen doc improvements. ........ ................
author R. David Murray <rdmurray@bitdance.com>
date Thu, 04 Feb 2010 16:44:31 +0000
parents ac854cde3135
children cab14be0ada1
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1 #include "Python.h"
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2 #include "asdl.h"
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3
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4 asdl_seq *
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5 asdl_seq_new(int size, PyArena *arena)
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6 {
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7 asdl_seq *seq = NULL;
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8 size_t n = (size ? (sizeof(void *) * (size - 1)) : 0);
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9
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10 /* check size is sane */
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11 if (size < 0 || size == INT_MIN ||
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12 (size && ((size - 1) > (PY_SIZE_MAX / sizeof(void *))))) {
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13 PyErr_NoMemory();
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14 return NULL;
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15 }
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16
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17 /* check if size can be added safely */
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18 if (n > PY_SIZE_MAX - sizeof(asdl_seq)) {
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19 PyErr_NoMemory();
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20 return NULL;
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21 }
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22
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23 n += sizeof(asdl_seq);
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24
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25 seq = (asdl_seq *)PyArena_Malloc(arena, n);
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26 if (!seq) {
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27 PyErr_NoMemory();
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28 return NULL;
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29 }
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30 memset(seq, 0, n);
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31 seq->size = size;
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32 return seq;
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33 }
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34
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35 asdl_int_seq *
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36 asdl_int_seq_new(int size, PyArena *arena)
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37 {
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38 asdl_int_seq *seq = NULL;
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39 size_t n = (size ? (sizeof(void *) * (size - 1)) : 0);
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40
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41 /* check size is sane */
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42 if (size < 0 || size == INT_MIN ||
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43 (size && ((size - 1) > (PY_SIZE_MAX / sizeof(void *))))) {
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44 PyErr_NoMemory();
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45 return NULL;
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46 }
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47
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48 /* check if size can be added safely */
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49 if (n > PY_SIZE_MAX - sizeof(asdl_seq)) {
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50 PyErr_NoMemory();
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51 return NULL;
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52 }
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53
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54 n += sizeof(asdl_seq);
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55
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56 seq = (asdl_int_seq *)PyArena_Malloc(arena, n);
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57 if (!seq) {
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58 PyErr_NoMemory();
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59 return NULL;
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60 }
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61 memset(seq, 0, n);
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62 seq->size = size;
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63 return seq;
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64 }