1 /* gettime -- get the system clock
2
3 Copyright (C) 2002, 2004-2007, 2009-2023 Free Software Foundation, Inc.
4
5 This file is free software: you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as
7 published by the Free Software Foundation, either version 3 of the
8 License, or (at your option) any later version.
9
10 This file is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public License
16 along with this program. If not, see <https://www.gnu.org/licenses/>. */
17
18 /* Written by Paul Eggert. */
19
20 #include <config.h>
21
22 #include "timespec.h"
23
24 #include <sys/time.h>
25
26 /* Get the system time into *TS. */
27
28 void
29 gettime (struct timespec *ts)
30 {
31 #if defined CLOCK_REALTIME && HAVE_CLOCK_GETTIME
32 clock_gettime (CLOCK_REALTIME, ts);
33 #elif defined HAVE_TIMESPEC_GET
34 timespec_get (ts, TIME_UTC);
35 #else
36 struct timeval tv;
37 gettimeofday (&tv, NULL);
38 *ts = (struct timespec) { .tv_sec = tv.tv_sec,
39 .tv_nsec = tv.tv_usec * 1000 };
40 #endif
41 }
42
43 /* Return the current system time as a struct timespec. */
44
45 struct timespec
46 current_timespec (void)
47 {
48 struct timespec ts;
49 gettime (&ts);
50 return ts;
51 }