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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 MD |
22 | #include <time.h> |
23 | ||
395d6b02 JG |
24 | #define MSEC_PER_SEC 1000ULL |
25 | #define NSEC_PER_SEC 1000000000ULL | |
26 | #define NSEC_PER_MSEC 1000000ULL | |
27 | #define NSEC_PER_USEC 1000ULL | |
28 | ||
2daf6502 MD |
29 | /* |
30 | * timespec_to_ms: Convert timespec to milliseconds. | |
31 | * | |
32 | * Returns 0 on success, else -1 on error. errno is set to EOVERFLOW if | |
33 | * input would overflow the output in milliseconds. | |
34 | */ | |
35 | int timespec_to_ms(struct timespec ts, unsigned long *ms); | |
36 | ||
37 | /* | |
38 | * timespec_abs_diff: Absolute difference between timespec. | |
39 | */ | |
40 | struct timespec timespec_abs_diff(struct timespec ts_a, struct timespec ts_b); | |
41 | ||
395d6b02 | 42 | #endif /* LTTNG_TIME_H */ |