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	NSEC2SEC(n)	((n) / (NANOSEC / SEC))
44#define	SEC2NSEC(m)	((hrtime_t)(m) * (NANOSEC / SEC))
45
46typedef longlong_t	hrtime_t;
47
48#if defined(__i386__) || defined(__powerpc__)
49#define	TIMESPEC_OVERFLOW(ts)						\
50	((ts)->tv_sec < INT32_MIN || (ts)->tv_sec > INT32_MAX)
51#else
52#define	TIMESPEC_OVERFLOW(ts)						\
53	((ts)->tv_sec < INT64_MIN || (ts)->tv_sec > INT64_MAX)
54#endif
55
56#define	SEC_TO_TICK(sec)	((sec) * hz)
57#define	NSEC_TO_TICK(usec)	((usec) / (NANOSEC / hz))
58
59#ifdef _KERNEL
60static __inline hrtime_t
61gethrtime(void) {
62
63	struct timespec ts;
64	hrtime_t nsec;
65
66	getnanouptime(&ts);
67	nsec = (hrtime_t)ts.tv_sec * NANOSEC + ts.tv_nsec;
68	return (nsec);
69}
70
71#define	gethrestime_sec()	(time_second)
72#define	gethrestime(ts)		getnanotime(ts)
73#define	gethrtime_waitfree()	gethrtime()
74
75extern int nsec_per_tick;	/* nanoseconds per clock tick */
76
77#define ddi_get_lbolt64()				\
78    (int64_t)(((getsbinuptime() >> 16) * hz) >> 16)
79#define ddi_get_lbolt()		(clock_t)ddi_get_lbolt64()
80
81#else
82
83static __inline hrtime_t gethrtime(void) {
84	struct timespec ts;
85	clock_gettime(CLOCK_UPTIME,&ts);
86	return (((u_int64_t) ts.tv_sec) * NANOSEC + ts.tv_nsec);
87}
88
89#endif	/* _KERNEL */
90
91#endif	/* !_OPENSOLARIS_SYS_TIME_H_ */
92