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annotate mercurial/cext/util.h @ 51381:1d488f7be492
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author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
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date | Wed, 14 Feb 2024 22:43:51 -0500 |
parents | 3aa1b7ded52c |
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util.h: Utility macros for handling different Python APIs.
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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 /* clang-format off */ |
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14 typedef struct { |
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15 PyObject_HEAD |
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16 int flags; |
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17 int mode; |
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18 int size; |
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19 int mtime_s; |
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20 int mtime_ns; |
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21 } dirstateItemObject; |
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22 /* clang-format on */ |
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23 |
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24 static const int dirstate_flag_wc_tracked = 1 << 0; |
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25 static const int dirstate_flag_p1_tracked = 1 << 1; |
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26 static const int dirstate_flag_p2_info = 1 << 2; |
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27 static const int dirstate_flag_mode_exec_perm = 1 << 3; |
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28 static const int dirstate_flag_mode_is_symlink = 1 << 4; |
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29 static const int dirstate_flag_has_fallback_exec = 1 << 5; |
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30 static const int dirstate_flag_fallback_exec = 1 << 6; |
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31 static const int dirstate_flag_has_fallback_symlink = 1 << 7; |
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32 static const int dirstate_flag_fallback_symlink = 1 << 8; |
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33 static const int dirstate_flag_expected_state_is_modified = 1 << 9; |
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34 static const int dirstate_flag_has_meaningful_data = 1 << 10; |
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35 static const int dirstate_flag_has_mtime = 1 << 11; |
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36 static const int dirstate_flag_mtime_second_ambiguous = 1 << 12; |
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37 static const int dirstate_flag_directory = 1 << 13; |
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38 static const int dirstate_flag_all_unknown_recorded = 1 << 14; |
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39 static const int dirstate_flag_all_ignored_recorded = 1 << 15; |
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40 |
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41 extern PyTypeObject dirstateItemType; |
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42 #define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateItemType) |
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43 |
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44 #ifndef MIN |
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45 #define MIN(a, b) (((a) < (b)) ? (a) : (b)) |
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46 #endif |
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47 /* VC9 doesn't include bool and lacks stdbool.h based on my searching */ |
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48 #if defined(_MSC_VER) || __STDC_VERSION__ < 199901L |
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49 #define true 1 |
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50 #define false 0 |
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51 typedef unsigned char bool; |
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52 #else |
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53 #include <stdbool.h> |
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54 #endif |
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55 |
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56 static inline PyObject *_dict_new_presized(Py_ssize_t expected_size) |
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57 { |
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58 /* _PyDict_NewPresized expects a minused parameter, but it actually |
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59 creates a dictionary that's the nearest power of two bigger than the |
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60 parameter. For example, with the initial minused = 1000, the |
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61 dictionary created has size 1024. Of course in a lot of cases that |
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62 can be greater than the maximum load factor Python's dict object |
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63 expects (= 2/3), so as soon as we cross the threshold we'll resize |
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64 anyway. So create a dictionary that's at least 3/2 the size. */ |
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65 return _PyDict_NewPresized(((1 + expected_size) / 2) * 3); |
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66 } |
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67 |
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68 /* Convert a PyInt or PyLong to a long. Returns false if there is an |
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69 error, in which case an exception will already have been set. */ |
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70 static inline bool pylong_to_long(PyObject *pylong, long *out) |
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71 { |
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72 *out = PyLong_AsLong(pylong); |
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73 /* Fast path to avoid hitting PyErr_Occurred if the value was obviously |
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74 * not an error. */ |
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75 if (*out != -1) { |
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76 return true; |
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77 } |
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78 return PyErr_Occurred() == NULL; |
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79 } |
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80 |
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81 #endif /* _HG_UTIL_H_ */ |