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
43typedef longlong_t	hrtime_t;
44
45#if defined(__i386__) || defined(__powerpc__)
46#define	TIMESPEC_OVERFLOW(ts)						\
47	((ts)->tv_sec < INT32_MIN || (ts)->tv_sec > INT32_MAX)
48#else
49#define	TIMESPEC_OVERFLOW(ts)						\
50	((ts)->tv_sec < INT64_MIN || (ts)->tv_sec > INT64_MAX)
51#endif
52
53#define	SEC_TO_TICK(sec)	((sec) * hz)
54#define	NSEC_TO_TICK(usec)	((usec) / (NANOSEC / hz))
55
56#ifdef _KERNEL
57static __inline hrtime_t
58gethrtime(void) {
59
60	struct timespec ts;
61	hrtime_t nsec;
62
63	getnanouptime(&ts);
64	nsec = (hrtime_t)ts.tv_sec * NANOSEC + ts.tv_nsec;
65	return (nsec);
66}
67
68#define	gethrestime_sec()	(time_second)
69#define	gethrestime(ts)		getnanotime(ts)
70#define	gethrtime_waitfree()	gethrtime()
71
72extern int nsec_per_tick;	/* nanoseconds per clock tick */
73
74static __inline int64_t
75ddi_get_lbolt64(void)
76{
77
78	return (gethrtime() / nsec_per_tick);
79}
80
81static __inline clock_t
82ddi_get_lbolt(void)
83{
84
85	return (ddi_get_lbolt64());
86}
87
88#else
89
90static __inline hrtime_t gethrtime(void) {
91	struct timespec ts;
92	clock_gettime(CLOCK_UPTIME,&ts);
93	return (((u_int64_t) ts.tv_sec) * NANOSEC + ts.tv_nsec);
94}
95
96#endif	/* _KERNEL */
97
98#endif	/* !_OPENSOLARIS_SYS_TIME_H_ */
99