1 /*-
2 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 #ifndef _OPENSOLARIS_SYS_TIME_H_
30 #define _OPENSOLARIS_SYS_TIME_H_
31
32 #include_next <sys/time.h>
33
34 #define SEC 1
35 #define MILLISEC 1000
36 #define MICROSEC 1000000
37 #define NANOSEC 1000000000
38 #define TIME_MAX LLONG_MAX
39
40 #define MSEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MILLISEC))
41 #define NSEC2MSEC(n) ((n) / (NANOSEC / MILLISEC))
42
43 #define USEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MICROSEC))
44 #define NSEC2USEC(n) ((n) / (NANOSEC / MICROSEC))
45
46 #define NSEC2SEC(n) ((n) / (NANOSEC / SEC))
47 #define SEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / SEC))
48
49 typedef longlong_t hrtime_t;
50
51 #if defined(__i386__) || defined(__powerpc__)
52 #define TIMESPEC_OVERFLOW(ts) \
53 ((ts)->tv_sec < INT32_MIN || (ts)->tv_sec > INT32_MAX)
54 #else
55 #define TIMESPEC_OVERFLOW(ts) \
56 ((ts)->tv_sec < INT64_MIN || (ts)->tv_sec > INT64_MAX)
57 #endif
58
59 #define SEC_TO_TICK(sec) ((sec) * hz)
60 #define NSEC_TO_TICK(nsec) ((nsec) / (NANOSEC / hz))
61
62 #ifdef _KERNEL
63 static __inline hrtime_t
gethrtime(void)64 gethrtime(void) {
65
66 struct timespec ts;
67 hrtime_t nsec;
68
69 getnanouptime(&ts);
70 nsec = (hrtime_t)ts.tv_sec * NANOSEC + ts.tv_nsec;
71 return (nsec);
72 }
73
74 #define gethrestime_sec() (time_second)
75 #define gethrestime(ts) getnanotime(ts)
76 #define gethrtime_waitfree() gethrtime()
77
78 extern int nsec_per_tick; /* nanoseconds per clock tick */
79
80 #define ddi_get_lbolt64() \
81 (int64_t)(((getsbinuptime() >> 16) * hz) >> 16)
82 #define ddi_get_lbolt() (clock_t)ddi_get_lbolt64()
83
84 #else
85
gethrtime(void)86 static __inline hrtime_t gethrtime(void) {
87 struct timespec ts;
88 clock_gettime(CLOCK_UPTIME,&ts);
89 return (((u_int64_t) ts.tv_sec) * NANOSEC + ts.tv_nsec);
90 }
91
92 #endif /* _KERNEL */
93
94 #endif /* !_OPENSOLARIS_SYS_TIME_H_ */
95