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2 * Copyright (C) 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include <common/macros.h>
26 #define MSEC_PER_SEC 1000ULL
27 #define NSEC_PER_SEC 1000000000ULL
28 #define NSEC_PER_MSEC 1000000ULL
29 #define NSEC_PER_USEC 1000ULL
30 #define USEC_PER_SEC 1000000ULL
31 #define USEC_PER_MSEC 1000ULL
33 #define SEC_PER_MINUTE 60ULL
34 #define MINUTE_PER_HOUR 60ULL
36 #define USEC_PER_MINUTE (USEC_PER_SEC * SEC_PER_MINUTE)
37 #define USEC_PER_HOURS (USEC_PER_MINUTE * MINUTE_PER_HOUR)
40 bool locale_supports_utf8(void);
42 #define NSEC_UNIT "ns"
43 #define USEC_UNIT (locale_supports_utf8() ? "µs" : "us")
44 #define MSEC_UNIT "ms"
49 #define ISO8601_FORMAT "%Y%m%dT%H%M%S%z"
50 #define ISO8601_LEN 21
53 * timespec_to_ms: Convert timespec to milliseconds.
55 * Returns 0 on success, else -1 on error. errno is set to EOVERFLOW if
56 * input would overflow the output in milliseconds.
59 int timespec_to_ms(struct timespec ts
, unsigned long *ms
);
62 * timespec_abs_diff: Absolute difference between timespec.
65 struct timespec
timespec_abs_diff(struct timespec ts_a
, struct timespec ts_b
);
68 * Format time_t to ISO8601 compatible format.
71 int time_t_to_ISO8601(char *s
, size_t s_size
, time_t time
);
73 #endif /* LTTNG_TIME_H */
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