Fix: relayd: rotation failure for multi-domain session
[lttng-tools.git] / src / common / time.h
CommitLineData
395d6b02 1/*
ab5be9fa 2 * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
395d6b02 3 *
ab5be9fa 4 * SPDX-License-Identifier: LGPL-2.1-or-later
395d6b02 5 *
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6 */
7
8#ifndef LTTNG_TIME_H
9#define LTTNG_TIME_H
10
2daf6502 11#include <time.h>
2a1135fa 12#include <stdbool.h>
03ab1b42 13#include <common/macros.h>
efef32e9 14#include <common/compat/time.h>
2daf6502 15
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16#define MSEC_PER_SEC 1000ULL
17#define NSEC_PER_SEC 1000000000ULL
18#define NSEC_PER_MSEC 1000000ULL
19#define NSEC_PER_USEC 1000ULL
20#define USEC_PER_SEC 1000000ULL
21#define USEC_PER_MSEC 1000ULL
22
23#define SEC_PER_MINUTE 60ULL
24#define MINUTE_PER_HOUR 60ULL
25
26#define USEC_PER_MINUTE (USEC_PER_SEC * SEC_PER_MINUTE)
27#define USEC_PER_HOURS (USEC_PER_MINUTE * MINUTE_PER_HOUR)
395d6b02 28
274ca939 29#define ISO8601_STR_LEN sizeof("YYYYmmddTHHMMSS+HHMM")
a8b66566 30#define DATETIME_STR_LEN sizeof("YYYYmmdd-HHMMSS")
274ca939 31
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32bool locale_supports_utf8(void);
33
34#define NSEC_UNIT "ns"
35#define USEC_UNIT (locale_supports_utf8() ? "µs" : "us")
36#define MSEC_UNIT "ms"
37#define SEC_UNIT "s"
38#define MIN_UNIT "m"
39#define HR_UNIT "h"
40
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41/*
42 * timespec_to_ms: Convert timespec to milliseconds.
43 *
44 * Returns 0 on success, else -1 on error. errno is set to EOVERFLOW if
45 * input would overflow the output in milliseconds.
46 */
47int timespec_to_ms(struct timespec ts, unsigned long *ms);
48
49/*
50 * timespec_abs_diff: Absolute difference between timespec.
51 */
52struct timespec timespec_abs_diff(struct timespec ts_a, struct timespec ts_b);
53
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54/*
55 * Format a Unix timestamp to an ISO 8601 compatible timestamp of
56 * the form "YYYYmmddTHHMMSS+HHMM" in local time. `len` must >= to
57 * ISO8601_STR_LEN.
58 *
59 * Returns 0 on success, else -1 on error.
60 */
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61int time_to_iso8601_str(time_t time, char *str, size_t len);
62
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63int time_to_datetime_str(time_t time, char *str, size_t len);
64
395d6b02 65#endif /* LTTNG_TIME_H */
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