notification-thread: drain all tracer notification on removal
[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 *
395d6b02
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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
03ab1b42 32LTTNG_HIDDEN
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33bool locale_supports_utf8(void);
34
35#define NSEC_UNIT "ns"
36#define USEC_UNIT (locale_supports_utf8() ? "µs" : "us")
37#define MSEC_UNIT "ms"
38#define SEC_UNIT "s"
39#define MIN_UNIT "m"
40#define HR_UNIT "h"
41
2daf6502
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42/*
43 * timespec_to_ms: Convert timespec to milliseconds.
44 *
45 * Returns 0 on success, else -1 on error. errno is set to EOVERFLOW if
46 * input would overflow the output in milliseconds.
47 */
03ab1b42 48LTTNG_HIDDEN
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49int timespec_to_ms(struct timespec ts, unsigned long *ms);
50
51/*
52 * timespec_abs_diff: Absolute difference between timespec.
53 */
03ab1b42 54LTTNG_HIDDEN
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55struct timespec timespec_abs_diff(struct timespec ts_a, struct timespec ts_b);
56
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57/*
58 * Format a Unix timestamp to an ISO 8601 compatible timestamp of
59 * the form "YYYYmmddTHHMMSS+HHMM" in local time. `len` must >= to
60 * ISO8601_STR_LEN.
61 *
62 * Returns 0 on success, else -1 on error.
63 */
64LTTNG_HIDDEN
65int time_to_iso8601_str(time_t time, char *str, size_t len);
66
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67LTTNG_HIDDEN
68int time_to_datetime_str(time_t time, char *str, size_t len);
69
395d6b02 70#endif /* LTTNG_TIME_H */
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