1 /* $NetBSD: time.h,v 1.15 2022/10/31 04:50:12 simonb Exp $ */
2
3 /*-
4 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: head/sys/cddl/compat/opensolaris/sys/time.h 296530 2016-03-08 18:28:24Z mav $
29 */
30
31 #ifndef _OPENSOLARIS_SYS_TIME_H_
32 #define _OPENSOLARIS_SYS_TIME_H_
33
34 #include_next <sys/time.h>
35
36 #define SEC 1
37 #define MILLISEC 1000
38 #define MICROSEC 1000000
39 #define NANOSEC 1000000000
40 #define TIME_MAX LLONG_MAX
41
42 #define MSEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MILLISEC))
43 #define NSEC2MSEC(n) ((n) / (NANOSEC / MILLISEC))
44
45 #define NSEC2SEC(n) ((n) / (NANOSEC / SEC))
46 #define SEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / SEC))
47
48 #ifndef __defined_hr_t
49 #define __defined_hr_t
50 typedef longlong_t hrtime_t;
51 #endif
52
53 /* FreeBSD i386 and PPC use int32 for time, all else int64 */
54 #if defined(__FreeBSD__) && (defined(__i386__) || defined(__powerpc__))
55 #define TIMESPEC_OVERFLOW(ts) \
56 ((ts)->tv_sec < INT32_MIN || (ts)->tv_sec > INT32_MAX)
57 #else
58 #define TIMESPEC_OVERFLOW(ts) \
59 ((ts)->tv_sec < INT64_MIN || (ts)->tv_sec > INT64_MAX)
60 #endif
61
62 #define SEC_TO_TICK(sec) ((sec) * hz)
63 #define NSEC_TO_TICK(nsec) ((nsec) / (NANOSEC / hz))
64
65 #ifdef _KERNEL
66
67 static __inline hrtime_t
gethrtime(void)68 gethrtime(void) {
69
70 struct timespec ts;
71 hrtime_t nsec;
72
73 getnanouptime(&ts);
74 nsec = (hrtime_t)ts.tv_sec * NANOSEC + ts.tv_nsec;
75 return (nsec);
76 }
77
78 #define gethrestime_sec() (time_second)
79 #define gethrestime(ts) getnanotime(ts)
80 #define gethrtime_waitfree() gethrtime()
81
82 static inline int64_t
ddi_get_lbolt64(void)83 ddi_get_lbolt64(void)
84 {
85 struct timespec ts;
86 extern int hz;
87
88 getnanouptime(&ts);
89 return (int64_t)(SEC_TO_TICK(ts.tv_sec) + NSEC_TO_TICK(ts.tv_nsec));
90 }
91
92 #define ddi_get_lbolt() (clock_t)ddi_get_lbolt64()
93
94 #else
95
96 #ifdef __NetBSD__
97 int clock_gettime(clockid_t, struct timespec *)
98 __RENAME(__clock_gettime50);
99 #endif
100 #if defined(__linux__) || defined(__GNU__)
101 #include <time.h>
102 #endif
103
gethrtime(void)104 static __inline hrtime_t gethrtime(void) {
105 struct timespec ts;
106 clock_gettime(CLOCK_REALTIME,&ts);
107 return (((u_int64_t) ts.tv_sec) * NANOSEC + ts.tv_nsec);
108 }
109
110 #define ddi_get_lbolt() (gethrtime() >> 23)
111 #define ddi_get_lbolt64() (gethrtime() >> 23)
112
113 #endif /* _KERNEL */
114
115 #endif /* !_OPENSOLARIS_SYS_TIME_H_ */
116