xref: /illumos-gate/usr/src/lib/libc/i386/sys/__clock_gettime.c (revision 82049ff560eed6fbdf4cf222d894467f5809f9b3)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source.  A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*
13  * Copyright 2016 Joyent, Inc.
14  */
15 
16 
17 
18 #include "thr_uberdata.h"
19 #include <cp_defs.h>
20 
21 extern int __clock_gettime_sys(clockid_t, timespec_t *);
22 
23 int
24 __clock_gettime(clockid_t clock_id, timespec_t *tp)
25 {
26 	comm_page_t *cp = (comm_page_t *)__uberdata.ub_comm_page;
27 
28 	if (cp != NULL && __cp_can_gettime(cp) != 0) {
29 		switch (clock_id) {
30 		case __CLOCK_REALTIME0:
31 		case CLOCK_REALTIME:
32 			return (__cp_clock_gettime_realtime(cp, tp));
33 
34 		case CLOCK_MONOTONIC:
35 			return (__cp_clock_gettime_monotonic(cp, tp));
36 
37 		default:
38 			/* Fallback */
39 			break;
40 		}
41 	}
42 	return (__clock_gettime_sys(clock_id, tp));
43 }
44