mercurial/cext/util.h
author Augie Fackler <augie@google.com>
Tue, 17 Oct 2017 10:51:43 -0400
changeset 34838 d3ea6a1c798f
parent 34635 3455e2e2ce9b
child 35775 440e8fce29e7
permissions -rw-r--r--
templater: use pycompat.sysbytes to bytes-ify some __name__ attrs Spotted by yuya in review of e87e62b7fc0b. Differential Revision: https://phab.mercurial-scm.org/D1145
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/*
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 util.h - utility functions for interfacing with the various python APIs.
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 This software may be used and distributed according to the terms of
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 the GNU General Public License, incorporated herein by reference.
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*/
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#ifndef _HG_UTIL_H_
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#define _HG_UTIL_H_
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#include "compat.h"
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#if PY_MAJOR_VERSION >= 3
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#define IS_PY3K
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#endif
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/* clang-format off */
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typedef struct {
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	PyObject_HEAD
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	char state;
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	int mode;
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	int size;
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	int mtime;
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} dirstateTupleObject;
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/* clang-format on */
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extern PyTypeObject dirstateTupleType;
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#define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateTupleType)
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#define MIN(a, b) (((a) < (b)) ? (a) : (b))
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/* VC9 doesn't include bool and lacks stdbool.h based on my searching */
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#if defined(_MSC_VER) || __STDC_VERSION__ < 199901L
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#define true 1
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#define false 0
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typedef unsigned char bool;
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#else
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#include <stdbool.h>
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#endif
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static inline PyObject *_dict_new_presized(Py_ssize_t expected_size)
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{
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	/* _PyDict_NewPresized expects a minused parameter, but it actually
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	   creates a dictionary that's the nearest power of two bigger than the
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	   parameter. For example, with the initial minused = 1000, the
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	   dictionary created has size 1024. Of course in a lot of cases that
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	   can be greater than the maximum load factor Python's dict object
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	   expects (= 2/3), so as soon as we cross the threshold we'll resize
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	   anyway. So create a dictionary that's at least 3/2 the size. */
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	return _PyDict_NewPresized(((1 + expected_size) / 2) * 3);
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}
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#endif /* _HG_UTIL_H_ */