Mercurial > cpython-lru_cache-weakref

annotate Python/asdl.c @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents fd25030223b0
children
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1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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1 #include "Python.h"
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Jeremy Hylton <jeremy@alum.mit.edu>
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2 #include "asdl.h"
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3
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Jeremy Hylton <jeremy@alum.mit.edu>
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4 asdl_seq *
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Neal Norwitz <nnorwitz@gmail.com>
parents: 35869
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5 asdl_seq_new(int size, PyArena *arena)
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Jeremy Hylton <jeremy@alum.mit.edu>
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6 {
61463
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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7 asdl_seq *seq = NULL;
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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8 size_t n = (size ? (sizeof(void *) * (size - 1)) : 0);
47587
1c964ed35ef9 Merge in release25-maint r60793:
Gregory P. Smith <greg@mad-scientist.com>
parents: 37689
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9
61463
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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10 /* check size is sane */
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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11 if (size < 0 || size == INT_MIN ||
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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12 (size && ((size - 1) > (PY_SIZE_MAX / sizeof(void *))))) {
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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13 PyErr_NoMemory();
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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14 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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15 }
47587
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Gregory P. Smith <greg@mad-scientist.com>
parents: 37689
diff changeset
16
61463
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
17 /* check if size can be added safely */
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
18 if (n > PY_SIZE_MAX - sizeof(asdl_seq)) {
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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19 PyErr_NoMemory();
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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20 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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21 }
47587
1c964ed35ef9 Merge in release25-maint r60793:
Gregory P. Smith <greg@mad-scientist.com>
parents: 37689
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22
61463
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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23 n += sizeof(asdl_seq);
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Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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24
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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25 seq = (asdl_seq *)PyArena_Malloc(arena, n);
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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26 if (!seq) {
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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27 PyErr_NoMemory();
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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28 return NULL;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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29 }
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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30 memset(seq, 0, n);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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31 seq->size = size;
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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32 return seq;
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1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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33 }
37685
5e72b0c74100 Introduce asdl_int_seq, to hold cmpop_ty.
Martin v. Löwis <martin@v.loewis.de>
parents: 36718
diff changeset
34
5e72b0c74100 Introduce asdl_int_seq, to hold cmpop_ty.
Martin v. Löwis <martin@v.loewis.de>
parents: 36718
diff changeset
35 asdl_int_seq *
5e72b0c74100 Introduce asdl_int_seq, to hold cmpop_ty.
Martin v. Löwis <martin@v.loewis.de>
parents: 36718
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36 asdl_int_seq_new(int size, PyArena *arena)
5e72b0c74100 Introduce asdl_int_seq, to hold cmpop_ty.
Martin v. Löwis <martin@v.loewis.de>
parents: 36718
diff changeset
37 {
61463
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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38 asdl_int_seq *seq = NULL;
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
39 size_t n = (size ? (sizeof(void *) * (size - 1)) : 0);
47587
1c964ed35ef9 Merge in release25-maint r60793:
Gregory P. Smith <greg@mad-scientist.com>
parents: 37689
diff changeset
40
61463
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
41 /* check size is sane */
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
42 if (size < 0 || size == INT_MIN ||
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
43 (size && ((size - 1) > (PY_SIZE_MAX / sizeof(void *))))) {
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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44 PyErr_NoMemory();
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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45 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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46 }
47587
1c964ed35ef9 Merge in release25-maint r60793:
Gregory P. Smith <greg@mad-scientist.com>
parents: 37689
diff changeset
47
61463
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
48 /* check if size can be added safely */
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
49 if (n > PY_SIZE_MAX - sizeof(asdl_seq)) {
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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50 PyErr_NoMemory();
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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51 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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52 }
47587
1c964ed35ef9 Merge in release25-maint r60793:
Gregory P. Smith <greg@mad-scientist.com>
parents: 37689
diff changeset
53
61463
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
54 n += sizeof(asdl_seq);
37685
5e72b0c74100 Introduce asdl_int_seq, to hold cmpop_ty.
Martin v. Löwis <martin@v.loewis.de>
parents: 36718
diff changeset
55
61463
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
56 seq = (asdl_int_seq *)PyArena_Malloc(arena, n);
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
57 if (!seq) {
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
58 PyErr_NoMemory();
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
59 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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60 }
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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61 memset(seq, 0, n);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
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62 seq->size = size;
fd25030223b0 Untabify C files. Will watch buildbots.
Antoine Pitrou <solipsis@pitrou.net>
parents: 47587
diff changeset
63 return seq;
37685
5e72b0c74100 Introduce asdl_int_seq, to hold cmpop_ty.
Martin v. Löwis <martin@v.loewis.de>
parents: 36718
diff changeset
64 }