Fix "clock error" due to machine reboot.
[darkstat] / now.h
1 /* darkstat 3
2 * copyright (c) 2001-2014 Emil Mikulic.
3 *
4 * now.h: a cache of the current time.
5 *
6 * Permission to use, copy, modify, and distribute this file for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18 #include <sys/types.h>
19
20 void now_init(void);
21 void now_update(void); /* once per event loop (in darkstat.c) */
22
23 time_t now_real(void);
24 time_t now_mono(void);
25
26 /* Monotonic times can be negative (a time from before the machine booted) so
27 * treat them as signed. */
28 time_t mono_to_real(const int64_t t);
29 int64_t real_to_mono(const time_t t);
30
31 /* Emits warnings if a call is too slow. */
32 struct timespec;
33 void timer_start(struct timespec *t);
34 void timer_stop(const struct timespec * const t,
35 const int64_t nsec,
36 const char *warning);
37
38 /* vim:set ts=3 sw=3 tw=80 et: */