1 // SPDX-License-Identifier: BSD-2-Clause
2 /*
3 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #ifndef _OPENSOLARIS_SYS_TIME_H_
29 #define _OPENSOLARIS_SYS_TIME_H_
30 #pragma once
31 #include_next <sys/time.h>
32 #include <sys/debug.h>
33 #ifndef _SYS_KERNEL_H_
34 extern int hz;
35 #endif
36
37 #define SEC 1
38 #define MILLISEC 1000UL
39 #define MICROSEC 1000000UL
40 #define NANOSEC 1000000000UL
41 #define TIME_MAX LLONG_MAX
42
43 #define MSEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MILLISEC))
44 #define NSEC2MSEC(n) ((n) / (NANOSEC / MILLISEC))
45
46 #define USEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MICROSEC))
47 #define NSEC2USEC(n) ((n) / (NANOSEC / MICROSEC))
48
49 #define NSEC2SEC(n) ((n) / (NANOSEC / SEC))
50 #define SEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / SEC))
51
52 typedef longlong_t hrtime_t;
53
54 #if 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 static __inline hrtime_t
gethrtime(void)66 gethrtime(void)
67 {
68 struct timespec ts;
69 hrtime_t nsec;
70
71 nanouptime(&ts);
72 nsec = ((hrtime_t)ts.tv_sec * NANOSEC) + ts.tv_nsec;
73 return (nsec);
74 }
75
76 #define gethrestime_sec() (time_second)
77 #define gethrestime(ts) getnanotime(ts)
78 #define gethrtime_waitfree() gethrtime()
79
80 extern int nsec_per_tick; /* nanoseconds per clock tick */
81
82 #define ddi_get_lbolt64() \
83 (int64_t)(((getsbinuptime() >> 16) * hz) >> 16)
84 #define ddi_get_lbolt() (clock_t)ddi_get_lbolt64()
85
86 #else
87
88 static __inline hrtime_t
gethrtime(void)89 gethrtime(void)
90 {
91 struct timespec ts;
92 clock_gettime(CLOCK_UPTIME, &ts);
93 return (((uint64_t)ts.tv_sec) * NANOSEC + ts.tv_nsec);
94 }
95 #endif /* !_OPENSOLARIS_SYS_TIME_H_ */
96