annotate mercurial/cext/util.h @ 35816:f6ca1e11d8b4 stable

revset: evaluate filesets against each revision for 'file()' (issue5778) After f2aeff8a87b6, the fileset was evaluated to a set of files against the working directory, and then those files were applied against each revision. The result was nonsense. For example, `hg log -r 'file("set:exec()")'` on the Mercurial repo listed revision 0 because it has the `hg` script, which is currently +x. But that bit wasn't applied until revision 280 (which 'contains()' properly indicates). This technique was borrowed from checkstatus(), which services adds(), modifies(), and removes(), so it seems safe enough. The 'r:' case is explicitly assigned to wdirrev, freeing up rev=None to mean "re-evaluate at each revision". The distinction is important to avoid behavior changes with `hg log set:...` (test-largefiles-misc.t and test-fileset-generated.t drop current log output without this). I'm not sure what the right behavior for that is (1fd352aa08fc explicitly enabled this behavior for graphlog), but the day before the release isn't the time to experiment.
author Matt Harbison <matt_harbison@yahoo.com>
date Sun, 28 Jan 2018 14:08:59 -0500
parents 440e8fce29e7
children 9a639a33ad1f
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1 /*
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2 util.h - utility functions for interfacing with the various python APIs.
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3
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4 This software may be used and distributed according to the terms of
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5 the GNU General Public License, incorporated herein by reference.
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6 */
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7
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8 #ifndef _HG_UTIL_H_
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9 #define _HG_UTIL_H_
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10
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11 #include "compat.h"
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12
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13 #if PY_MAJOR_VERSION >= 3
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14 #define IS_PY3K
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15 #endif
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17 /* clang-format off */
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18 typedef struct {
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19 PyObject_HEAD
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20 char state;
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21 int mode;
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22 int size;
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23 int mtime;
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24 } dirstateTupleObject;
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25 /* clang-format on */
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27 extern PyTypeObject dirstateTupleType;
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28 #define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateTupleType)
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29
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30 #ifndef MIN
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31 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
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32 #endif
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33 /* VC9 doesn't include bool and lacks stdbool.h based on my searching */
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34 #if defined(_MSC_VER) || __STDC_VERSION__ < 199901L
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35 #define true 1
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36 #define false 0
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37 typedef unsigned char bool;
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38 #else
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39 #include <stdbool.h>
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40 #endif
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41
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42 static inline PyObject *_dict_new_presized(Py_ssize_t expected_size)
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43 {
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44 /* _PyDict_NewPresized expects a minused parameter, but it actually
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45 creates a dictionary that's the nearest power of two bigger than the
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46 parameter. For example, with the initial minused = 1000, the
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47 dictionary created has size 1024. Of course in a lot of cases that
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48 can be greater than the maximum load factor Python's dict object
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49 expects (= 2/3), so as soon as we cross the threshold we'll resize
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50 anyway. So create a dictionary that's at least 3/2 the size. */
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51 return _PyDict_NewPresized(((1 + expected_size) / 2) * 3);
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52 }
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53
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54 #endif /* _HG_UTIL_H_ */