1 /* gettime -- get the system clock
2
3 Copyright (C) 2002, 2004-2007, 2009-2023 Free Software Foundation,
4 Inc.
5
6 This file is free software: you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation, either version 3 of the
9 License, or (at your option) any later version.
10
11 This file is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with this program. If not, see <https://www.gnu.org/licenses/>. */
18
19 /* Written by Paul Eggert. */
20
21 #include <config.h>
22
23 #include "timespec.h"
24
25 #include <sys/time.h>
26
27 /* Get the system time into *TS. */
28
29 void
30 gettime (struct timespec *ts)
31 {
32 #if defined CLOCK_REALTIME && HAVE_CLOCK_GETTIME
33 clock_gettime (CLOCK_REALTIME, ts);
34 #elif defined HAVE_TIMESPEC_GET
35 timespec_get (ts, TIME_UTC);
36 #else
37 struct timeval tv;
38 gettimeofday (&tv, NULL);
39 ts->tv_sec = tv.tv_sec;
40 ts->tv_nsec = tv.tv_usec * 1000;
41 #endif
42 }
43
44 /* Return the current system time as a struct timespec. */
45
46 struct timespec
47 current_timespec (void)
48 {
49 struct timespec ts;
50 gettime (&ts);
51 return ts;
52 }