xref: /illumos-gate/usr/src/boot/sys/sys/time.h (revision 199767f8)
1*199767f8SToomas Soome /*-
2*199767f8SToomas Soome  * Copyright (c) 1982, 1986, 1993
3*199767f8SToomas Soome  *	The Regents of the University of California.  All rights reserved.
4*199767f8SToomas Soome  *
5*199767f8SToomas Soome  * Redistribution and use in source and binary forms, with or without
6*199767f8SToomas Soome  * modification, are permitted provided that the following conditions
7*199767f8SToomas Soome  * are met:
8*199767f8SToomas Soome  * 1. Redistributions of source code must retain the above copyright
9*199767f8SToomas Soome  *    notice, this list of conditions and the following disclaimer.
10*199767f8SToomas Soome  * 2. Redistributions in binary form must reproduce the above copyright
11*199767f8SToomas Soome  *    notice, this list of conditions and the following disclaimer in the
12*199767f8SToomas Soome  *    documentation and/or other materials provided with the distribution.
13*199767f8SToomas Soome  * 4. Neither the name of the University nor the names of its contributors
14*199767f8SToomas Soome  *    may be used to endorse or promote products derived from this software
15*199767f8SToomas Soome  *    without specific prior written permission.
16*199767f8SToomas Soome  *
17*199767f8SToomas Soome  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18*199767f8SToomas Soome  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19*199767f8SToomas Soome  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20*199767f8SToomas Soome  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21*199767f8SToomas Soome  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22*199767f8SToomas Soome  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23*199767f8SToomas Soome  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24*199767f8SToomas Soome  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25*199767f8SToomas Soome  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26*199767f8SToomas Soome  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27*199767f8SToomas Soome  * SUCH DAMAGE.
28*199767f8SToomas Soome  *
29*199767f8SToomas Soome  *	@(#)time.h	8.5 (Berkeley) 5/4/95
30*199767f8SToomas Soome  * $FreeBSD$
31*199767f8SToomas Soome  */
32*199767f8SToomas Soome 
33*199767f8SToomas Soome #ifndef _SYS_TIME_H_
34*199767f8SToomas Soome #define	_SYS_TIME_H_
35*199767f8SToomas Soome 
36*199767f8SToomas Soome #include <sys/_timeval.h>
37*199767f8SToomas Soome #include <sys/types.h>
38*199767f8SToomas Soome #include <sys/timespec.h>
39*199767f8SToomas Soome 
40*199767f8SToomas Soome struct timezone {
41*199767f8SToomas Soome 	int	tz_minuteswest;	/* minutes west of Greenwich */
42*199767f8SToomas Soome 	int	tz_dsttime;	/* type of dst correction */
43*199767f8SToomas Soome };
44*199767f8SToomas Soome #define	DST_NONE	0	/* not on dst */
45*199767f8SToomas Soome #define	DST_USA		1	/* USA style dst */
46*199767f8SToomas Soome #define	DST_AUST	2	/* Australian style dst */
47*199767f8SToomas Soome #define	DST_WET		3	/* Western European dst */
48*199767f8SToomas Soome #define	DST_MET		4	/* Middle European dst */
49*199767f8SToomas Soome #define	DST_EET		5	/* Eastern European dst */
50*199767f8SToomas Soome #define	DST_CAN		6	/* Canada */
51*199767f8SToomas Soome 
52*199767f8SToomas Soome #if __BSD_VISIBLE
53*199767f8SToomas Soome struct bintime {
54*199767f8SToomas Soome 	time_t	sec;
55*199767f8SToomas Soome 	uint64_t frac;
56*199767f8SToomas Soome };
57*199767f8SToomas Soome 
58*199767f8SToomas Soome static __inline void
bintime_addx(struct bintime * _bt,uint64_t _x)59*199767f8SToomas Soome bintime_addx(struct bintime *_bt, uint64_t _x)
60*199767f8SToomas Soome {
61*199767f8SToomas Soome 	uint64_t _u;
62*199767f8SToomas Soome 
63*199767f8SToomas Soome 	_u = _bt->frac;
64*199767f8SToomas Soome 	_bt->frac += _x;
65*199767f8SToomas Soome 	if (_u > _bt->frac)
66*199767f8SToomas Soome 		_bt->sec++;
67*199767f8SToomas Soome }
68*199767f8SToomas Soome 
69*199767f8SToomas Soome static __inline void
bintime_add(struct bintime * _bt,const struct bintime * _bt2)70*199767f8SToomas Soome bintime_add(struct bintime *_bt, const struct bintime *_bt2)
71*199767f8SToomas Soome {
72*199767f8SToomas Soome 	uint64_t _u;
73*199767f8SToomas Soome 
74*199767f8SToomas Soome 	_u = _bt->frac;
75*199767f8SToomas Soome 	_bt->frac += _bt2->frac;
76*199767f8SToomas Soome 	if (_u > _bt->frac)
77*199767f8SToomas Soome 		_bt->sec++;
78*199767f8SToomas Soome 	_bt->sec += _bt2->sec;
79*199767f8SToomas Soome }
80*199767f8SToomas Soome 
81*199767f8SToomas Soome static __inline void
bintime_sub(struct bintime * _bt,const struct bintime * _bt2)82*199767f8SToomas Soome bintime_sub(struct bintime *_bt, const struct bintime *_bt2)
83*199767f8SToomas Soome {
84*199767f8SToomas Soome 	uint64_t _u;
85*199767f8SToomas Soome 
86*199767f8SToomas Soome 	_u = _bt->frac;
87*199767f8SToomas Soome 	_bt->frac -= _bt2->frac;
88*199767f8SToomas Soome 	if (_u < _bt->frac)
89*199767f8SToomas Soome 		_bt->sec--;
90*199767f8SToomas Soome 	_bt->sec -= _bt2->sec;
91*199767f8SToomas Soome }
92*199767f8SToomas Soome 
93*199767f8SToomas Soome static __inline void
bintime_mul(struct bintime * _bt,u_int _x)94*199767f8SToomas Soome bintime_mul(struct bintime *_bt, u_int _x)
95*199767f8SToomas Soome {
96*199767f8SToomas Soome 	uint64_t _p1, _p2;
97*199767f8SToomas Soome 
98*199767f8SToomas Soome 	_p1 = (_bt->frac & 0xffffffffull) * _x;
99*199767f8SToomas Soome 	_p2 = (_bt->frac >> 32) * _x + (_p1 >> 32);
100*199767f8SToomas Soome 	_bt->sec *= _x;
101*199767f8SToomas Soome 	_bt->sec += (_p2 >> 32);
102*199767f8SToomas Soome 	_bt->frac = (_p2 << 32) | (_p1 & 0xffffffffull);
103*199767f8SToomas Soome }
104*199767f8SToomas Soome 
105*199767f8SToomas Soome static __inline void
bintime_shift(struct bintime * _bt,int _exp)106*199767f8SToomas Soome bintime_shift(struct bintime *_bt, int _exp)
107*199767f8SToomas Soome {
108*199767f8SToomas Soome 
109*199767f8SToomas Soome 	if (_exp > 0) {
110*199767f8SToomas Soome 		_bt->sec <<= _exp;
111*199767f8SToomas Soome 		_bt->sec |= _bt->frac >> (64 - _exp);
112*199767f8SToomas Soome 		_bt->frac <<= _exp;
113*199767f8SToomas Soome 	} else if (_exp < 0) {
114*199767f8SToomas Soome 		_bt->frac >>= -_exp;
115*199767f8SToomas Soome 		_bt->frac |= (uint64_t)_bt->sec << (64 + _exp);
116*199767f8SToomas Soome 		_bt->sec >>= -_exp;
117*199767f8SToomas Soome 	}
118*199767f8SToomas Soome }
119*199767f8SToomas Soome 
120*199767f8SToomas Soome #define	bintime_clear(a)	((a)->sec = (a)->frac = 0)
121*199767f8SToomas Soome #define	bintime_isset(a)	((a)->sec || (a)->frac)
122*199767f8SToomas Soome #define	bintime_cmp(a, b, cmp)						\
123*199767f8SToomas Soome 	(((a)->sec == (b)->sec) ?					\
124*199767f8SToomas Soome 	    ((a)->frac cmp (b)->frac) :					\
125*199767f8SToomas Soome 	    ((a)->sec cmp (b)->sec))
126*199767f8SToomas Soome 
127*199767f8SToomas Soome #define	SBT_1S	((sbintime_t)1 << 32)
128*199767f8SToomas Soome #define	SBT_1M	(SBT_1S * 60)
129*199767f8SToomas Soome #define	SBT_1MS	(SBT_1S / 1000)
130*199767f8SToomas Soome #define	SBT_1US	(SBT_1S / 1000000)
131*199767f8SToomas Soome #define	SBT_1NS	(SBT_1S / 1000000000)
132*199767f8SToomas Soome #define	SBT_MAX	0x7fffffffffffffffLL
133*199767f8SToomas Soome 
134*199767f8SToomas Soome static __inline int
sbintime_getsec(sbintime_t _sbt)135*199767f8SToomas Soome sbintime_getsec(sbintime_t _sbt)
136*199767f8SToomas Soome {
137*199767f8SToomas Soome 
138*199767f8SToomas Soome 	return (_sbt >> 32);
139*199767f8SToomas Soome }
140*199767f8SToomas Soome 
141*199767f8SToomas Soome static __inline sbintime_t
bttosbt(const struct bintime _bt)142*199767f8SToomas Soome bttosbt(const struct bintime _bt)
143*199767f8SToomas Soome {
144*199767f8SToomas Soome 
145*199767f8SToomas Soome 	return (((sbintime_t)_bt.sec << 32) + (_bt.frac >> 32));
146*199767f8SToomas Soome }
147*199767f8SToomas Soome 
148*199767f8SToomas Soome static __inline struct bintime
sbttobt(sbintime_t _sbt)149*199767f8SToomas Soome sbttobt(sbintime_t _sbt)
150*199767f8SToomas Soome {
151*199767f8SToomas Soome 	struct bintime _bt;
152*199767f8SToomas Soome 
153*199767f8SToomas Soome 	_bt.sec = _sbt >> 32;
154*199767f8SToomas Soome 	_bt.frac = _sbt << 32;
155*199767f8SToomas Soome 	return (_bt);
156*199767f8SToomas Soome }
157*199767f8SToomas Soome 
158*199767f8SToomas Soome /*-
159*199767f8SToomas Soome  * Background information:
160*199767f8SToomas Soome  *
161*199767f8SToomas Soome  * When converting between timestamps on parallel timescales of differing
162*199767f8SToomas Soome  * resolutions it is historical and scientific practice to round down rather
163*199767f8SToomas Soome  * than doing 4/5 rounding.
164*199767f8SToomas Soome  *
165*199767f8SToomas Soome  *   The date changes at midnight, not at noon.
166*199767f8SToomas Soome  *
167*199767f8SToomas Soome  *   Even at 15:59:59.999999999 it's not four'o'clock.
168*199767f8SToomas Soome  *
169*199767f8SToomas Soome  *   time_second ticks after N.999999999 not after N.4999999999
170*199767f8SToomas Soome  */
171*199767f8SToomas Soome 
172*199767f8SToomas Soome static __inline void
bintime2timespec(const struct bintime * _bt,struct timespec * _ts)173*199767f8SToomas Soome bintime2timespec(const struct bintime *_bt, struct timespec *_ts)
174*199767f8SToomas Soome {
175*199767f8SToomas Soome 
176*199767f8SToomas Soome 	_ts->tv_sec = _bt->sec;
177*199767f8SToomas Soome 	_ts->tv_nsec = ((uint64_t)1000000000 *
178*199767f8SToomas Soome 	    (uint32_t)(_bt->frac >> 32)) >> 32;
179*199767f8SToomas Soome }
180*199767f8SToomas Soome 
181*199767f8SToomas Soome static __inline void
timespec2bintime(const struct timespec * _ts,struct bintime * _bt)182*199767f8SToomas Soome timespec2bintime(const struct timespec *_ts, struct bintime *_bt)
183*199767f8SToomas Soome {
184*199767f8SToomas Soome 
185*199767f8SToomas Soome 	_bt->sec = _ts->tv_sec;
186*199767f8SToomas Soome 	/* 18446744073 = int(2^64 / 1000000000) */
187*199767f8SToomas Soome 	_bt->frac = _ts->tv_nsec * (uint64_t)18446744073LL;
188*199767f8SToomas Soome }
189*199767f8SToomas Soome 
190*199767f8SToomas Soome static __inline void
bintime2timeval(const struct bintime * _bt,struct timeval * _tv)191*199767f8SToomas Soome bintime2timeval(const struct bintime *_bt, struct timeval *_tv)
192*199767f8SToomas Soome {
193*199767f8SToomas Soome 
194*199767f8SToomas Soome 	_tv->tv_sec = _bt->sec;
195*199767f8SToomas Soome 	_tv->tv_usec = ((uint64_t)1000000 * (uint32_t)(_bt->frac >> 32)) >> 32;
196*199767f8SToomas Soome }
197*199767f8SToomas Soome 
198*199767f8SToomas Soome static __inline void
timeval2bintime(const struct timeval * _tv,struct bintime * _bt)199*199767f8SToomas Soome timeval2bintime(const struct timeval *_tv, struct bintime *_bt)
200*199767f8SToomas Soome {
201*199767f8SToomas Soome 
202*199767f8SToomas Soome 	_bt->sec = _tv->tv_sec;
203*199767f8SToomas Soome 	/* 18446744073709 = int(2^64 / 1000000) */
204*199767f8SToomas Soome 	_bt->frac = _tv->tv_usec * (uint64_t)18446744073709LL;
205*199767f8SToomas Soome }
206*199767f8SToomas Soome 
207*199767f8SToomas Soome static __inline struct timespec
sbttots(sbintime_t _sbt)208*199767f8SToomas Soome sbttots(sbintime_t _sbt)
209*199767f8SToomas Soome {
210*199767f8SToomas Soome 	struct timespec _ts;
211*199767f8SToomas Soome 
212*199767f8SToomas Soome 	_ts.tv_sec = _sbt >> 32;
213*199767f8SToomas Soome 	_ts.tv_nsec = ((uint64_t)1000000000 * (uint32_t)_sbt) >> 32;
214*199767f8SToomas Soome 	return (_ts);
215*199767f8SToomas Soome }
216*199767f8SToomas Soome 
217*199767f8SToomas Soome static __inline sbintime_t
tstosbt(struct timespec _ts)218*199767f8SToomas Soome tstosbt(struct timespec _ts)
219*199767f8SToomas Soome {
220*199767f8SToomas Soome 
221*199767f8SToomas Soome 	return (((sbintime_t)_ts.tv_sec << 32) +
222*199767f8SToomas Soome 	    (_ts.tv_nsec * (((uint64_t)1 << 63) / 500000000) >> 32));
223*199767f8SToomas Soome }
224*199767f8SToomas Soome 
225*199767f8SToomas Soome static __inline struct timeval
sbttotv(sbintime_t _sbt)226*199767f8SToomas Soome sbttotv(sbintime_t _sbt)
227*199767f8SToomas Soome {
228*199767f8SToomas Soome 	struct timeval _tv;
229*199767f8SToomas Soome 
230*199767f8SToomas Soome 	_tv.tv_sec = _sbt >> 32;
231*199767f8SToomas Soome 	_tv.tv_usec = ((uint64_t)1000000 * (uint32_t)_sbt) >> 32;
232*199767f8SToomas Soome 	return (_tv);
233*199767f8SToomas Soome }
234*199767f8SToomas Soome 
235*199767f8SToomas Soome static __inline sbintime_t
tvtosbt(struct timeval _tv)236*199767f8SToomas Soome tvtosbt(struct timeval _tv)
237*199767f8SToomas Soome {
238*199767f8SToomas Soome 
239*199767f8SToomas Soome 	return (((sbintime_t)_tv.tv_sec << 32) +
240*199767f8SToomas Soome 	    (_tv.tv_usec * (((uint64_t)1 << 63) / 500000) >> 32));
241*199767f8SToomas Soome }
242*199767f8SToomas Soome #endif /* __BSD_VISIBLE */
243*199767f8SToomas Soome 
244*199767f8SToomas Soome #ifdef _KERNEL
245*199767f8SToomas Soome 
246*199767f8SToomas Soome /* Operations on timespecs */
247*199767f8SToomas Soome #define	timespecclear(tvp)	((tvp)->tv_sec = (tvp)->tv_nsec = 0)
248*199767f8SToomas Soome #define	timespecisset(tvp)	((tvp)->tv_sec || (tvp)->tv_nsec)
249*199767f8SToomas Soome #define	timespeccmp(tvp, uvp, cmp)					\
250*199767f8SToomas Soome 	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
251*199767f8SToomas Soome 	    ((tvp)->tv_nsec cmp (uvp)->tv_nsec) :			\
252*199767f8SToomas Soome 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
253*199767f8SToomas Soome #define	timespecadd(vvp, uvp)						\
254*199767f8SToomas Soome 	do {								\
255*199767f8SToomas Soome 		(vvp)->tv_sec += (uvp)->tv_sec;				\
256*199767f8SToomas Soome 		(vvp)->tv_nsec += (uvp)->tv_nsec;			\
257*199767f8SToomas Soome 		if ((vvp)->tv_nsec >= 1000000000) {			\
258*199767f8SToomas Soome 			(vvp)->tv_sec++;				\
259*199767f8SToomas Soome 			(vvp)->tv_nsec -= 1000000000;			\
260*199767f8SToomas Soome 		}							\
261*199767f8SToomas Soome 	} while (0)
262*199767f8SToomas Soome #define	timespecsub(vvp, uvp)						\
263*199767f8SToomas Soome 	do {								\
264*199767f8SToomas Soome 		(vvp)->tv_sec -= (uvp)->tv_sec;				\
265*199767f8SToomas Soome 		(vvp)->tv_nsec -= (uvp)->tv_nsec;			\
266*199767f8SToomas Soome 		if ((vvp)->tv_nsec < 0) {				\
267*199767f8SToomas Soome 			(vvp)->tv_sec--;				\
268*199767f8SToomas Soome 			(vvp)->tv_nsec += 1000000000;			\
269*199767f8SToomas Soome 		}							\
270*199767f8SToomas Soome 	} while (0)
271*199767f8SToomas Soome 
272*199767f8SToomas Soome /* Operations on timevals. */
273*199767f8SToomas Soome 
274*199767f8SToomas Soome #define	timevalclear(tvp)		((tvp)->tv_sec = (tvp)->tv_usec = 0)
275*199767f8SToomas Soome #define	timevalisset(tvp)		((tvp)->tv_sec || (tvp)->tv_usec)
276*199767f8SToomas Soome #define	timevalcmp(tvp, uvp, cmp)					\
277*199767f8SToomas Soome 	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
278*199767f8SToomas Soome 	    ((tvp)->tv_usec cmp (uvp)->tv_usec) :			\
279*199767f8SToomas Soome 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
280*199767f8SToomas Soome 
281*199767f8SToomas Soome /* timevaladd and timevalsub are not inlined */
282*199767f8SToomas Soome 
283*199767f8SToomas Soome #endif /* _KERNEL */
284*199767f8SToomas Soome 
285*199767f8SToomas Soome #ifndef _KERNEL			/* NetBSD/OpenBSD compatible interfaces */
286*199767f8SToomas Soome 
287*199767f8SToomas Soome #define	timerclear(tvp)		((tvp)->tv_sec = (tvp)->tv_usec = 0)
288*199767f8SToomas Soome #define	timerisset(tvp)		((tvp)->tv_sec || (tvp)->tv_usec)
289*199767f8SToomas Soome #define	timercmp(tvp, uvp, cmp)					\
290*199767f8SToomas Soome 	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
291*199767f8SToomas Soome 	    ((tvp)->tv_usec cmp (uvp)->tv_usec) :			\
292*199767f8SToomas Soome 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
293*199767f8SToomas Soome #define	timeradd(tvp, uvp, vvp)						\
294*199767f8SToomas Soome 	do {								\
295*199767f8SToomas Soome 		(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;		\
296*199767f8SToomas Soome 		(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;	\
297*199767f8SToomas Soome 		if ((vvp)->tv_usec >= 1000000) {			\
298*199767f8SToomas Soome 			(vvp)->tv_sec++;				\
299*199767f8SToomas Soome 			(vvp)->tv_usec -= 1000000;			\
300*199767f8SToomas Soome 		}							\
301*199767f8SToomas Soome 	} while (0)
302*199767f8SToomas Soome #define	timersub(tvp, uvp, vvp)						\
303*199767f8SToomas Soome 	do {								\
304*199767f8SToomas Soome 		(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;		\
305*199767f8SToomas Soome 		(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;	\
306*199767f8SToomas Soome 		if ((vvp)->tv_usec < 0) {				\
307*199767f8SToomas Soome 			(vvp)->tv_sec--;				\
308*199767f8SToomas Soome 			(vvp)->tv_usec += 1000000;			\
309*199767f8SToomas Soome 		}							\
310*199767f8SToomas Soome 	} while (0)
311*199767f8SToomas Soome #endif
312*199767f8SToomas Soome 
313*199767f8SToomas Soome /*
314*199767f8SToomas Soome  * Names of the interval timers, and structure
315*199767f8SToomas Soome  * defining a timer setting.
316*199767f8SToomas Soome  */
317*199767f8SToomas Soome #define	ITIMER_REAL	0
318*199767f8SToomas Soome #define	ITIMER_VIRTUAL	1
319*199767f8SToomas Soome #define	ITIMER_PROF	2
320*199767f8SToomas Soome 
321*199767f8SToomas Soome struct itimerval {
322*199767f8SToomas Soome 	struct	timeval it_interval;	/* timer interval */
323*199767f8SToomas Soome 	struct	timeval it_value;	/* current value */
324*199767f8SToomas Soome };
325*199767f8SToomas Soome 
326*199767f8SToomas Soome /*
327*199767f8SToomas Soome  * Getkerninfo clock information structure
328*199767f8SToomas Soome  */
329*199767f8SToomas Soome struct clockinfo {
330*199767f8SToomas Soome 	int	hz;		/* clock frequency */
331*199767f8SToomas Soome 	int	tick;		/* micro-seconds per hz tick */
332*199767f8SToomas Soome 	int	spare;
333*199767f8SToomas Soome 	int	stathz;		/* statistics clock frequency */
334*199767f8SToomas Soome 	int	profhz;		/* profiling clock frequency */
335*199767f8SToomas Soome };
336*199767f8SToomas Soome 
337*199767f8SToomas Soome /* These macros are also in time.h. */
338*199767f8SToomas Soome #ifndef CLOCK_REALTIME
339*199767f8SToomas Soome #define	CLOCK_REALTIME	0
340*199767f8SToomas Soome #define	CLOCK_VIRTUAL	1
341*199767f8SToomas Soome #define	CLOCK_PROF	2
342*199767f8SToomas Soome #define	CLOCK_MONOTONIC	4
343*199767f8SToomas Soome #define	CLOCK_UPTIME	5		/* FreeBSD-specific. */
344*199767f8SToomas Soome #define	CLOCK_UPTIME_PRECISE	7	/* FreeBSD-specific. */
345*199767f8SToomas Soome #define	CLOCK_UPTIME_FAST	8	/* FreeBSD-specific. */
346*199767f8SToomas Soome #define	CLOCK_REALTIME_PRECISE	9	/* FreeBSD-specific. */
347*199767f8SToomas Soome #define	CLOCK_REALTIME_FAST	10	/* FreeBSD-specific. */
348*199767f8SToomas Soome #define	CLOCK_MONOTONIC_PRECISE	11	/* FreeBSD-specific. */
349*199767f8SToomas Soome #define	CLOCK_MONOTONIC_FAST	12	/* FreeBSD-specific. */
350*199767f8SToomas Soome #define	CLOCK_SECOND	13		/* FreeBSD-specific. */
351*199767f8SToomas Soome #define	CLOCK_THREAD_CPUTIME_ID	14
352*199767f8SToomas Soome #define	CLOCK_PROCESS_CPUTIME_ID	15
353*199767f8SToomas Soome #endif
354*199767f8SToomas Soome 
355*199767f8SToomas Soome #ifndef TIMER_ABSTIME
356*199767f8SToomas Soome #define	TIMER_RELTIME	0x0	/* relative timer */
357*199767f8SToomas Soome #define	TIMER_ABSTIME	0x1	/* absolute timer */
358*199767f8SToomas Soome #endif
359*199767f8SToomas Soome 
360*199767f8SToomas Soome #if __BSD_VISIBLE
361*199767f8SToomas Soome #define	CPUCLOCK_WHICH_PID	0
362*199767f8SToomas Soome #define	CPUCLOCK_WHICH_TID	1
363*199767f8SToomas Soome #endif
364*199767f8SToomas Soome 
365*199767f8SToomas Soome #ifdef _KERNEL
366*199767f8SToomas Soome 
367*199767f8SToomas Soome /*
368*199767f8SToomas Soome  * Kernel to clock driver interface.
369*199767f8SToomas Soome  */
370*199767f8SToomas Soome void	inittodr(time_t base);
371*199767f8SToomas Soome void	resettodr(void);
372*199767f8SToomas Soome 
373*199767f8SToomas Soome extern volatile time_t	time_second;
374*199767f8SToomas Soome extern volatile time_t	time_uptime;
375*199767f8SToomas Soome extern struct bintime boottimebin;
376*199767f8SToomas Soome extern struct timeval boottime;
377*199767f8SToomas Soome extern struct bintime tc_tick_bt;
378*199767f8SToomas Soome extern sbintime_t tc_tick_sbt;
379*199767f8SToomas Soome extern struct bintime tick_bt;
380*199767f8SToomas Soome extern sbintime_t tick_sbt;
381*199767f8SToomas Soome extern int tc_precexp;
382*199767f8SToomas Soome extern int tc_timepercentage;
383*199767f8SToomas Soome extern struct bintime bt_timethreshold;
384*199767f8SToomas Soome extern struct bintime bt_tickthreshold;
385*199767f8SToomas Soome extern sbintime_t sbt_timethreshold;
386*199767f8SToomas Soome extern sbintime_t sbt_tickthreshold;
387*199767f8SToomas Soome 
388*199767f8SToomas Soome /*
389*199767f8SToomas Soome  * Functions for looking at our clock: [get]{bin,nano,micro}[up]time()
390*199767f8SToomas Soome  *
391*199767f8SToomas Soome  * Functions without the "get" prefix returns the best timestamp
392*199767f8SToomas Soome  * we can produce in the given format.
393*199767f8SToomas Soome  *
394*199767f8SToomas Soome  * "bin"   == struct bintime  == seconds + 64 bit fraction of seconds.
395*199767f8SToomas Soome  * "nano"  == struct timespec == seconds + nanoseconds.
396*199767f8SToomas Soome  * "micro" == struct timeval  == seconds + microseconds.
397*199767f8SToomas Soome  *
398*199767f8SToomas Soome  * Functions containing "up" returns time relative to boot and
399*199767f8SToomas Soome  * should be used for calculating time intervals.
400*199767f8SToomas Soome  *
401*199767f8SToomas Soome  * Functions without "up" returns UTC time.
402*199767f8SToomas Soome  *
403*199767f8SToomas Soome  * Functions with the "get" prefix returns a less precise result
404*199767f8SToomas Soome  * much faster than the functions without "get" prefix and should
405*199767f8SToomas Soome  * be used where a precision of 1/hz seconds is acceptable or where
406*199767f8SToomas Soome  * performance is priority. (NB: "precision", _not_ "resolution" !)
407*199767f8SToomas Soome  */
408*199767f8SToomas Soome 
409*199767f8SToomas Soome void	binuptime(struct bintime *bt);
410*199767f8SToomas Soome void	nanouptime(struct timespec *tsp);
411*199767f8SToomas Soome void	microuptime(struct timeval *tvp);
412*199767f8SToomas Soome 
413*199767f8SToomas Soome static __inline sbintime_t
sbinuptime(void)414*199767f8SToomas Soome sbinuptime(void)
415*199767f8SToomas Soome {
416*199767f8SToomas Soome 	struct bintime _bt;
417*199767f8SToomas Soome 
418*199767f8SToomas Soome 	binuptime(&_bt);
419*199767f8SToomas Soome 	return (bttosbt(_bt));
420*199767f8SToomas Soome }
421*199767f8SToomas Soome 
422*199767f8SToomas Soome void	bintime(struct bintime *bt);
423*199767f8SToomas Soome void	nanotime(struct timespec *tsp);
424*199767f8SToomas Soome void	microtime(struct timeval *tvp);
425*199767f8SToomas Soome 
426*199767f8SToomas Soome void	getbinuptime(struct bintime *bt);
427*199767f8SToomas Soome void	getnanouptime(struct timespec *tsp);
428*199767f8SToomas Soome void	getmicrouptime(struct timeval *tvp);
429*199767f8SToomas Soome 
430*199767f8SToomas Soome static __inline sbintime_t
getsbinuptime(void)431*199767f8SToomas Soome getsbinuptime(void)
432*199767f8SToomas Soome {
433*199767f8SToomas Soome 	struct bintime _bt;
434*199767f8SToomas Soome 
435*199767f8SToomas Soome 	getbinuptime(&_bt);
436*199767f8SToomas Soome 	return (bttosbt(_bt));
437*199767f8SToomas Soome }
438*199767f8SToomas Soome 
439*199767f8SToomas Soome void	getbintime(struct bintime *bt);
440*199767f8SToomas Soome void	getnanotime(struct timespec *tsp);
441*199767f8SToomas Soome void	getmicrotime(struct timeval *tvp);
442*199767f8SToomas Soome 
443*199767f8SToomas Soome /* Other functions */
444*199767f8SToomas Soome int	itimerdecr(struct itimerval *itp, int usec);
445*199767f8SToomas Soome int	itimerfix(struct timeval *tv);
446*199767f8SToomas Soome int	ppsratecheck(struct timeval *, int *, int);
447*199767f8SToomas Soome int	ratecheck(struct timeval *, const struct timeval *);
448*199767f8SToomas Soome void	timevaladd(struct timeval *t1, const struct timeval *t2);
449*199767f8SToomas Soome void	timevalsub(struct timeval *t1, const struct timeval *t2);
450*199767f8SToomas Soome int	tvtohz(struct timeval *tv);
451*199767f8SToomas Soome 
452*199767f8SToomas Soome #define	TC_DEFAULTPERC		5
453*199767f8SToomas Soome 
454*199767f8SToomas Soome #define	BT2FREQ(bt)                                                     \
455*199767f8SToomas Soome 	(((uint64_t)0x8000000000000000 + ((bt)->frac >> 2)) /           \
456*199767f8SToomas Soome 	    ((bt)->frac >> 1))
457*199767f8SToomas Soome 
458*199767f8SToomas Soome #define	SBT2FREQ(sbt)	((SBT_1S + ((sbt) >> 1)) / (sbt))
459*199767f8SToomas Soome 
460*199767f8SToomas Soome #define	FREQ2BT(freq, bt)                                               \
461*199767f8SToomas Soome {									\
462*199767f8SToomas Soome 	(bt)->sec = 0;                                                  \
463*199767f8SToomas Soome 	(bt)->frac = ((uint64_t)0x8000000000000000  / (freq)) << 1;     \
464*199767f8SToomas Soome }
465*199767f8SToomas Soome 
466*199767f8SToomas Soome #define	TIMESEL(sbt, sbt2)						\
467*199767f8SToomas Soome 	(((sbt2) >= sbt_timethreshold) ?				\
468*199767f8SToomas Soome 	    ((*(sbt) = getsbinuptime()), 1) : ((*(sbt) = sbinuptime()), 0))
469*199767f8SToomas Soome 
470*199767f8SToomas Soome #else /* !_KERNEL */
471*199767f8SToomas Soome #include <time.h>
472*199767f8SToomas Soome 
473*199767f8SToomas Soome #include <sys/cdefs.h>
474*199767f8SToomas Soome #include <sys/select.h>
475*199767f8SToomas Soome 
476*199767f8SToomas Soome __BEGIN_DECLS
477*199767f8SToomas Soome int	setitimer(int, const struct itimerval *, struct itimerval *);
478*199767f8SToomas Soome int	utimes(const char *, const struct timeval *);
479*199767f8SToomas Soome 
480*199767f8SToomas Soome #if __BSD_VISIBLE
481*199767f8SToomas Soome int	adjtime(const struct timeval *, struct timeval *);
482*199767f8SToomas Soome int	clock_getcpuclockid2(id_t, int, clockid_t *);
483*199767f8SToomas Soome int	futimes(int, const struct timeval *);
484*199767f8SToomas Soome int	futimesat(int, const char *, const struct timeval [2]);
485*199767f8SToomas Soome int	lutimes(const char *, const struct timeval *);
486*199767f8SToomas Soome int	settimeofday(const struct timeval *, const struct timezone *);
487*199767f8SToomas Soome #endif
488*199767f8SToomas Soome 
489*199767f8SToomas Soome #if __XSI_VISIBLE
490*199767f8SToomas Soome int	getitimer(int, struct itimerval *);
491*199767f8SToomas Soome int	gettimeofday(struct timeval *, struct timezone *);
492*199767f8SToomas Soome #endif
493*199767f8SToomas Soome 
494*199767f8SToomas Soome __END_DECLS
495*199767f8SToomas Soome 
496*199767f8SToomas Soome #endif /* !_KERNEL */
497*199767f8SToomas Soome 
498*199767f8SToomas Soome #endif /* !_SYS_TIME_H_ */
499