Commit | Line | Data |
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395d6b02 JG |
1 | /* |
2 | * Copyright (C) 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
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. | |
8 | * | |
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. | |
13 | * | |
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 | |
17 | */ | |
18 | ||
19 | #ifndef LTTNG_TIME_H | |
20 | #define LTTNG_TIME_H | |
21 | ||
2daf6502 | 22 | #include <time.h> |
2a1135fa | 23 | #include <stdbool.h> |
03ab1b42 | 24 | #include <common/macros.h> |
2daf6502 | 25 | |
81684730 JR |
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 | |
32 | ||
33 | #define SEC_PER_MINUTE 60ULL | |
34 | #define MINUTE_PER_HOUR 60ULL | |
35 | ||
36 | #define USEC_PER_MINUTE (USEC_PER_SEC * SEC_PER_MINUTE) | |
37 | #define USEC_PER_HOURS (USEC_PER_MINUTE * MINUTE_PER_HOUR) | |
395d6b02 | 38 | |
274ca939 JG |
39 | #define ISO8601_STR_LEN sizeof("YYYYmmddTHHMMSS+HHMM") |
40 | ||
03ab1b42 | 41 | LTTNG_HIDDEN |
2a1135fa JG |
42 | bool locale_supports_utf8(void); |
43 | ||
44 | #define NSEC_UNIT "ns" | |
45 | #define USEC_UNIT (locale_supports_utf8() ? "µs" : "us") | |
46 | #define MSEC_UNIT "ms" | |
47 | #define SEC_UNIT "s" | |
48 | #define MIN_UNIT "m" | |
49 | #define HR_UNIT "h" | |
50 | ||
2daf6502 MD |
51 | /* |
52 | * timespec_to_ms: Convert timespec to milliseconds. | |
53 | * | |
54 | * Returns 0 on success, else -1 on error. errno is set to EOVERFLOW if | |
55 | * input would overflow the output in milliseconds. | |
56 | */ | |
03ab1b42 | 57 | LTTNG_HIDDEN |
2daf6502 MD |
58 | int timespec_to_ms(struct timespec ts, unsigned long *ms); |
59 | ||
60 | /* | |
61 | * timespec_abs_diff: Absolute difference between timespec. | |
62 | */ | |
03ab1b42 | 63 | LTTNG_HIDDEN |
2daf6502 MD |
64 | struct timespec timespec_abs_diff(struct timespec ts_a, struct timespec ts_b); |
65 | ||
274ca939 JG |
66 | /* |
67 | * Format a Unix timestamp to an ISO 8601 compatible timestamp of | |
68 | * the form "YYYYmmddTHHMMSS+HHMM" in local time. `len` must >= to | |
69 | * ISO8601_STR_LEN. | |
70 | * | |
71 | * Returns 0 on success, else -1 on error. | |
72 | */ | |
73 | LTTNG_HIDDEN | |
74 | int time_to_iso8601_str(time_t time, char *str, size_t len); | |
75 | ||
395d6b02 | 76 | #endif /* LTTNG_TIME_H */ |