xref: /openbsd/lib/libc/sys/w_gettimeofday.c (revision 771fbea0)
1 /*	$OpenBSD: w_gettimeofday.c,v 1.1 2020/07/06 13:33:06 pirofti Exp $ */
2 /*
3  * Copyright (c) 2020 Robert Nagy <robert@openbsd.org>
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 #include <sys/timetc.h>
19 
20 int
21 WRAP(gettimeofday)(struct timeval *tp, struct timezone *tzp)
22 {
23 	int rc = 0;
24 	struct timekeep *timekeep = _timekeep;
25 	static struct timezone zerotz = { 0, 0 };
26 
27 	if (timekeep == NULL || timekeep->tk_user == 0)
28 		return gettimeofday(tp, tzp);
29 
30 	if (tp)
31 		rc = _microtime(tp, timekeep);
32 	if (rc)
33 		return gettimeofday(tp, tzp);
34 
35 	if (tzp)
36 		*tzp = zerotz;
37 
38 	return 0;
39 }
40 DEF_WRAP(gettimeofday);
41