xref: /illumos-gate/usr/src/uts/common/sys/time.h (revision a8f6344f)
17c478bd9Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
27c478bd9Sstevel@tonic-gate /*	  All Rights Reserved  	*/
37c478bd9Sstevel@tonic-gate 
47c478bd9Sstevel@tonic-gate 
57c478bd9Sstevel@tonic-gate /*
639de7e40Sdanmcd  * Copyright (c) 1982, 1986, 1993 Regents of the University of California.
77c478bd9Sstevel@tonic-gate  * All rights reserved.  The Berkeley software License Agreement
87c478bd9Sstevel@tonic-gate  * specifies the terms and conditions for redistribution.
97c478bd9Sstevel@tonic-gate  */
107c478bd9Sstevel@tonic-gate 
117c478bd9Sstevel@tonic-gate /*
12ba3594baSGarrett D'Amore  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
13ba3594baSGarrett D'Amore  *
14113b131bSEric Saxe  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
157c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
16b819cea2SGordon Ross  *
17b819cea2SGordon Ross  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
187c478bd9Sstevel@tonic-gate  */
197c478bd9Sstevel@tonic-gate 
20*a8f6344fSEli Rosenthal /*
21*a8f6344fSEli Rosenthal  * Copyright (c) 2013, 2015 by Delphix. All rights reserved.
22*a8f6344fSEli Rosenthal  */
23*a8f6344fSEli Rosenthal 
247c478bd9Sstevel@tonic-gate #ifndef _SYS_TIME_H
257c478bd9Sstevel@tonic-gate #define	_SYS_TIME_H
267c478bd9Sstevel@tonic-gate 
277c478bd9Sstevel@tonic-gate #include <sys/feature_tests.h>
287c478bd9Sstevel@tonic-gate 
297c478bd9Sstevel@tonic-gate /*
307c478bd9Sstevel@tonic-gate  * Structure returned by gettimeofday(2) system call,
317c478bd9Sstevel@tonic-gate  * and used in other calls.
327c478bd9Sstevel@tonic-gate  */
337c478bd9Sstevel@tonic-gate 
347c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
357c478bd9Sstevel@tonic-gate extern "C" {
367c478bd9Sstevel@tonic-gate #endif
377c478bd9Sstevel@tonic-gate 
387c478bd9Sstevel@tonic-gate #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
397c478bd9Sstevel@tonic-gate 	defined(__EXTENSIONS__)
407c478bd9Sstevel@tonic-gate #ifndef	_ASM
417c478bd9Sstevel@tonic-gate 
427c478bd9Sstevel@tonic-gate #if !defined(_TIME_T) || __cplusplus >= 199711L
437c478bd9Sstevel@tonic-gate #define	_TIME_T
447c478bd9Sstevel@tonic-gate typedef	long	time_t;		/* time of day in seconds */
457c478bd9Sstevel@tonic-gate #endif	/* _TIME_T */
467c478bd9Sstevel@tonic-gate 
477c478bd9Sstevel@tonic-gate #ifndef	_SUSECONDS_T
487c478bd9Sstevel@tonic-gate #define	_SUSECONDS_T
497c478bd9Sstevel@tonic-gate typedef	long	suseconds_t;	/* signed # of microseconds */
507c478bd9Sstevel@tonic-gate #endif	/* _SUSECONDS_T */
517c478bd9Sstevel@tonic-gate 
527c478bd9Sstevel@tonic-gate struct timeval {
537c478bd9Sstevel@tonic-gate 	time_t		tv_sec;		/* seconds */
547c478bd9Sstevel@tonic-gate 	suseconds_t	tv_usec;	/* and microseconds */
557c478bd9Sstevel@tonic-gate };
567c478bd9Sstevel@tonic-gate 
577c478bd9Sstevel@tonic-gate #if defined(_SYSCALL32)
587c478bd9Sstevel@tonic-gate 
597c478bd9Sstevel@tonic-gate #include <sys/types32.h>
607c478bd9Sstevel@tonic-gate 
617c478bd9Sstevel@tonic-gate #define	TIMEVAL32_TO_TIMEVAL(tv, tv32)	{	\
627c478bd9Sstevel@tonic-gate 	(tv)->tv_sec = (time_t)(tv32)->tv_sec;	\
637c478bd9Sstevel@tonic-gate 	(tv)->tv_usec = (tv32)->tv_usec;	\
647c478bd9Sstevel@tonic-gate }
657c478bd9Sstevel@tonic-gate 
667c478bd9Sstevel@tonic-gate #define	TIMEVAL_TO_TIMEVAL32(tv32, tv)	{		\
677c478bd9Sstevel@tonic-gate 	(tv32)->tv_sec = (time32_t)(tv)->tv_sec;	\
68336069c2SPatrick Mooney 	(tv32)->tv_usec = (int32_t)(tv)->tv_usec;	\
697c478bd9Sstevel@tonic-gate }
707c478bd9Sstevel@tonic-gate 
717c478bd9Sstevel@tonic-gate #define	TIME32_MAX	INT32_MAX
727c478bd9Sstevel@tonic-gate #define	TIME32_MIN	INT32_MIN
737c478bd9Sstevel@tonic-gate 
747c478bd9Sstevel@tonic-gate #define	TIMEVAL_OVERFLOW(tv)	\
757c478bd9Sstevel@tonic-gate 	((tv)->tv_sec < TIME32_MIN || (tv)->tv_sec > TIME32_MAX)
767c478bd9Sstevel@tonic-gate 
77b819cea2SGordon Ross #endif	/* _SYSCALL32 */
787c478bd9Sstevel@tonic-gate 
797c478bd9Sstevel@tonic-gate #endif	/* _ASM */
807c478bd9Sstevel@tonic-gate #endif	/* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) ... */
817c478bd9Sstevel@tonic-gate 
827c478bd9Sstevel@tonic-gate #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
837c478bd9Sstevel@tonic-gate #ifndef	_ASM
847c478bd9Sstevel@tonic-gate struct timezone {
857c478bd9Sstevel@tonic-gate 	int	tz_minuteswest;	/* minutes west of Greenwich */
867c478bd9Sstevel@tonic-gate 	int	tz_dsttime;	/* type of dst correction */
877c478bd9Sstevel@tonic-gate };
887c478bd9Sstevel@tonic-gate 
897c478bd9Sstevel@tonic-gate #endif	/* _ASM */
907c478bd9Sstevel@tonic-gate #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
917c478bd9Sstevel@tonic-gate 
927c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
937c478bd9Sstevel@tonic-gate }
947c478bd9Sstevel@tonic-gate #endif
957c478bd9Sstevel@tonic-gate 
967c478bd9Sstevel@tonic-gate /*
977c478bd9Sstevel@tonic-gate  * Needed for longlong_t type.  Placement of this due to <sys/types.h>
987c478bd9Sstevel@tonic-gate  * including <sys/select.h> which relies on the presense of the itimerval
997c478bd9Sstevel@tonic-gate  * structure.
1007c478bd9Sstevel@tonic-gate  */
1017c478bd9Sstevel@tonic-gate #ifndef	_ASM
1027c478bd9Sstevel@tonic-gate #include <sys/types.h>
1037c478bd9Sstevel@tonic-gate #endif	/* _ASM */
1047c478bd9Sstevel@tonic-gate 
1057c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
1067c478bd9Sstevel@tonic-gate extern "C" {
1077c478bd9Sstevel@tonic-gate #endif
1087c478bd9Sstevel@tonic-gate 
1097c478bd9Sstevel@tonic-gate #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
1107c478bd9Sstevel@tonic-gate 
1117c478bd9Sstevel@tonic-gate #define	DST_NONE	0	/* not on dst */
1127c478bd9Sstevel@tonic-gate #define	DST_USA		1	/* USA style dst */
1137c478bd9Sstevel@tonic-gate #define	DST_AUST	2	/* Australian style dst */
1147c478bd9Sstevel@tonic-gate #define	DST_WET		3	/* Western European dst */
1157c478bd9Sstevel@tonic-gate #define	DST_MET		4	/* Middle European dst */
1167c478bd9Sstevel@tonic-gate #define	DST_EET		5	/* Eastern European dst */
1177c478bd9Sstevel@tonic-gate #define	DST_CAN		6	/* Canada */
1187c478bd9Sstevel@tonic-gate #define	DST_GB		7	/* Great Britain and Eire */
1197c478bd9Sstevel@tonic-gate #define	DST_RUM		8	/* Rumania */
1207c478bd9Sstevel@tonic-gate #define	DST_TUR		9	/* Turkey */
1217c478bd9Sstevel@tonic-gate #define	DST_AUSTALT	10	/* Australian style with shift in 1986 */
1227c478bd9Sstevel@tonic-gate 
1237c478bd9Sstevel@tonic-gate /*
1247c478bd9Sstevel@tonic-gate  * Operations on timevals.
1257c478bd9Sstevel@tonic-gate  */
1267c478bd9Sstevel@tonic-gate #define	timerisset(tvp)		((tvp)->tv_sec || (tvp)->tv_usec)
1277c478bd9Sstevel@tonic-gate #define	timercmp(tvp, uvp, cmp) \
1287c478bd9Sstevel@tonic-gate 	(((tvp)->tv_sec == (uvp)->tv_sec) ? \
1297c478bd9Sstevel@tonic-gate 	    /* CSTYLED */ \
1307c478bd9Sstevel@tonic-gate 	    ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
1317c478bd9Sstevel@tonic-gate 	    /* CSTYLED */ \
1327c478bd9Sstevel@tonic-gate 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
1337c478bd9Sstevel@tonic-gate 
1347c478bd9Sstevel@tonic-gate #define	timerclear(tvp)		(tvp)->tv_sec = (tvp)->tv_usec = 0
1357c478bd9Sstevel@tonic-gate 
13639de7e40Sdanmcd #ifdef __lint
13739de7e40Sdanmcd /*
13839de7e40Sdanmcd  * Make innocuous, lint-happy versions until do {} while (0) is acknowleged as
13939de7e40Sdanmcd  * lint-safe.  If the compiler could know that we always make tv_usec < 1000000
14039de7e40Sdanmcd  * we wouldn't need a special linted version.
14139de7e40Sdanmcd  */
14239de7e40Sdanmcd #define	timeradd(tvp, uvp, vvp)					\
14339de7e40Sdanmcd 	do								\
14439de7e40Sdanmcd 	{								\
14539de7e40Sdanmcd 		(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;		\
14639de7e40Sdanmcd 		(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;	\
14739de7e40Sdanmcd 		if ((vvp)->tv_usec >= 1000000)				\
14839de7e40Sdanmcd 		{							\
14939de7e40Sdanmcd 			(vvp)->tv_sec++;				\
15039de7e40Sdanmcd 			(vvp)->tv_usec -= 1000000;			\
15139de7e40Sdanmcd 		}							\
15239de7e40Sdanmcd 	} while ((vvp)->tv_usec >= 1000000)
15339de7e40Sdanmcd #define	timersub(tvp, uvp, vvp)					\
15439de7e40Sdanmcd 	do								\
15539de7e40Sdanmcd 	{								\
15639de7e40Sdanmcd 		(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;		\
15739de7e40Sdanmcd 		(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;	\
15839de7e40Sdanmcd 		if ((vvp)->tv_usec < 0)					\
15939de7e40Sdanmcd 		{							\
16039de7e40Sdanmcd 			(vvp)->tv_sec--;				\
16139de7e40Sdanmcd 			(vvp)->tv_usec += 1000000;			\
16239de7e40Sdanmcd 		}							\
16339de7e40Sdanmcd 	} while ((vvp)->tv_usec >= 1000000)
16439de7e40Sdanmcd #else
16539de7e40Sdanmcd #define	timeradd(tvp, uvp, vvp)					\
16639de7e40Sdanmcd 	do								\
16739de7e40Sdanmcd 	{								\
16839de7e40Sdanmcd 		(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;		\
16939de7e40Sdanmcd 		(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;	\
17039de7e40Sdanmcd 		if ((vvp)->tv_usec >= 1000000)				\
17139de7e40Sdanmcd 		{							\
17239de7e40Sdanmcd 			(vvp)->tv_sec++;				\
17339de7e40Sdanmcd 			(vvp)->tv_usec -= 1000000;			\
17439de7e40Sdanmcd 		}							\
17539de7e40Sdanmcd 	} while (0)
17639de7e40Sdanmcd 
17739de7e40Sdanmcd #define	timersub(tvp, uvp, vvp)					\
17839de7e40Sdanmcd 	do								\
17939de7e40Sdanmcd 	{								\
18039de7e40Sdanmcd 		(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;		\
18139de7e40Sdanmcd 		(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;	\
18239de7e40Sdanmcd 		if ((vvp)->tv_usec < 0)					\
18339de7e40Sdanmcd 		{							\
18439de7e40Sdanmcd 			(vvp)->tv_sec--;				\
18539de7e40Sdanmcd 			(vvp)->tv_usec += 1000000;			\
18639de7e40Sdanmcd 		}							\
18739de7e40Sdanmcd 	} while (0)
18839de7e40Sdanmcd #endif /* __lint */
18939de7e40Sdanmcd 
1907c478bd9Sstevel@tonic-gate #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
1917c478bd9Sstevel@tonic-gate 
1927c478bd9Sstevel@tonic-gate #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
1937c478bd9Sstevel@tonic-gate /*
1947c478bd9Sstevel@tonic-gate  * Names of the interval timers, and structure
1957c478bd9Sstevel@tonic-gate  * defining a timer setting.
1967c478bd9Sstevel@tonic-gate  */
1977c478bd9Sstevel@tonic-gate #define	ITIMER_REAL	0	/* Decrements in real time */
1987c478bd9Sstevel@tonic-gate #define	ITIMER_VIRTUAL	1	/* Decrements in process virtual time */
1997c478bd9Sstevel@tonic-gate #define	ITIMER_PROF	2	/* Decrements both in process virtual */
2007c478bd9Sstevel@tonic-gate 				/* time and when system is running on */
2017c478bd9Sstevel@tonic-gate 				/* behalf of the process. */
2027c478bd9Sstevel@tonic-gate #define	ITIMER_REALPROF	3	/* Decrements in real time for real- */
2037c478bd9Sstevel@tonic-gate 				/* time profiling of multithreaded */
2047c478bd9Sstevel@tonic-gate 				/* programs. */
2057c478bd9Sstevel@tonic-gate 
2067c478bd9Sstevel@tonic-gate #ifndef	_ASM
2077c478bd9Sstevel@tonic-gate struct	itimerval {
2087c478bd9Sstevel@tonic-gate 	struct	timeval it_interval;	/* timer interval */
2097c478bd9Sstevel@tonic-gate 	struct	timeval it_value;	/* current value */
2107c478bd9Sstevel@tonic-gate };
2117c478bd9Sstevel@tonic-gate 
2127c478bd9Sstevel@tonic-gate #if defined(_SYSCALL32)
2137c478bd9Sstevel@tonic-gate 
2147c478bd9Sstevel@tonic-gate struct itimerval32 {
2157c478bd9Sstevel@tonic-gate 	struct	timeval32 it_interval;
2167c478bd9Sstevel@tonic-gate 	struct	timeval32 it_value;
2177c478bd9Sstevel@tonic-gate };
2187c478bd9Sstevel@tonic-gate 
2197c478bd9Sstevel@tonic-gate #define	ITIMERVAL32_TO_ITIMERVAL(itv, itv32)	{	\
2207c478bd9Sstevel@tonic-gate 	TIMEVAL32_TO_TIMEVAL(&(itv)->it_interval, &(itv32)->it_interval); \
2217c478bd9Sstevel@tonic-gate 	TIMEVAL32_TO_TIMEVAL(&(itv)->it_value, &(itv32)->it_value);	\
2227c478bd9Sstevel@tonic-gate }
2237c478bd9Sstevel@tonic-gate 
2247c478bd9Sstevel@tonic-gate #define	ITIMERVAL_TO_ITIMERVAL32(itv32, itv)	{	\
2257c478bd9Sstevel@tonic-gate 	TIMEVAL_TO_TIMEVAL32(&(itv32)->it_interval, &(itv)->it_interval); \
2267c478bd9Sstevel@tonic-gate 	TIMEVAL_TO_TIMEVAL32(&(itv32)->it_value, &(itv)->it_value);	\
2277c478bd9Sstevel@tonic-gate }
2287c478bd9Sstevel@tonic-gate 
2297c478bd9Sstevel@tonic-gate #define	ITIMERVAL_OVERFLOW(itv)				\
2307c478bd9Sstevel@tonic-gate 	(TIMEVAL_OVERFLOW(&(itv)->it_interval) ||	\
2317c478bd9Sstevel@tonic-gate 	TIMEVAL_OVERFLOW(&(itv)->it_value))
2327c478bd9Sstevel@tonic-gate 
2337c478bd9Sstevel@tonic-gate #endif	/* _SYSCALL32 */
2347c478bd9Sstevel@tonic-gate #endif	/* _ASM */
2357c478bd9Sstevel@tonic-gate #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) ... */
2367c478bd9Sstevel@tonic-gate 
2377c478bd9Sstevel@tonic-gate 
2387c478bd9Sstevel@tonic-gate #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
2397c478bd9Sstevel@tonic-gate /*
2407c478bd9Sstevel@tonic-gate  *	Definitions for commonly used resolutions.
2417c478bd9Sstevel@tonic-gate  */
2427c478bd9Sstevel@tonic-gate #define	SEC		1
2437c478bd9Sstevel@tonic-gate #define	MILLISEC	1000
2447c478bd9Sstevel@tonic-gate #define	MICROSEC	1000000
245b59e2127SJosef 'Jeff' Sipek #define	NANOSEC		1000000000LL
2467c478bd9Sstevel@tonic-gate 
2470689f76cSAdam Leventhal #define	MSEC2NSEC(m)	((hrtime_t)(m) * (NANOSEC / MILLISEC))
2480689f76cSAdam Leventhal #define	NSEC2MSEC(n)	((n) / (NANOSEC / MILLISEC))
2490689f76cSAdam Leventhal 
250*a8f6344fSEli Rosenthal #define	NSEC2SEC(n)	((n) / (NANOSEC / SEC))
251*a8f6344fSEli Rosenthal #define	SEC2NSEC(m)	((hrtime_t)(m) * (NANOSEC / SEC))
252*a8f6344fSEli Rosenthal 
2537c478bd9Sstevel@tonic-gate #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
2547c478bd9Sstevel@tonic-gate 
2557c478bd9Sstevel@tonic-gate #ifndef	_ASM
2567c478bd9Sstevel@tonic-gate 
2577c478bd9Sstevel@tonic-gate /*
2587c478bd9Sstevel@tonic-gate  * Time expressed as a 64-bit nanosecond counter.
2597c478bd9Sstevel@tonic-gate  */
2607c478bd9Sstevel@tonic-gate typedef	longlong_t	hrtime_t;
2617c478bd9Sstevel@tonic-gate 
262b819cea2SGordon Ross #if defined(_KERNEL) || defined(_FAKE_KERNEL)
2637c478bd9Sstevel@tonic-gate 
2647c478bd9Sstevel@tonic-gate #include <sys/time_impl.h>
2657c478bd9Sstevel@tonic-gate #include <sys/mutex.h>
2667c478bd9Sstevel@tonic-gate 
2677c478bd9Sstevel@tonic-gate extern int tick_per_msec;	/* clock ticks per millisecond (may be zero) */
2687c478bd9Sstevel@tonic-gate extern int msec_per_tick;	/* milliseconds per clock tick (may be zero) */
2697c478bd9Sstevel@tonic-gate extern int usec_per_tick;	/* microseconds per clock tick */
2707c478bd9Sstevel@tonic-gate extern int nsec_per_tick;	/* nanoseconds per clock tick */
2717c478bd9Sstevel@tonic-gate 
2727c478bd9Sstevel@tonic-gate /*
2737c478bd9Sstevel@tonic-gate  * Macros to convert from common units of time (sec, msec, usec, nsec,
2747c478bd9Sstevel@tonic-gate  * timeval, timestruc) to clock ticks and vice versa.
2757c478bd9Sstevel@tonic-gate  */
2767c478bd9Sstevel@tonic-gate #define	TICK_TO_SEC(tick)	((tick) / hz)
2777c478bd9Sstevel@tonic-gate #define	SEC_TO_TICK(sec)	((sec) * hz)
2787c478bd9Sstevel@tonic-gate 
2797c478bd9Sstevel@tonic-gate #define	TICK_TO_MSEC(tick)	\
2807c478bd9Sstevel@tonic-gate 	(msec_per_tick ? (tick) * msec_per_tick : (tick) / tick_per_msec)
2817c478bd9Sstevel@tonic-gate #define	MSEC_TO_TICK(msec)	\
2827c478bd9Sstevel@tonic-gate 	(msec_per_tick ? (msec) / msec_per_tick : (msec) * tick_per_msec)
2837c478bd9Sstevel@tonic-gate #define	MSEC_TO_TICK_ROUNDUP(msec)	\
2847c478bd9Sstevel@tonic-gate 	(msec_per_tick ? \
2857c478bd9Sstevel@tonic-gate 	((msec) == 0 ? 0 : ((msec) - 1) / msec_per_tick + 1) : \
2867c478bd9Sstevel@tonic-gate 	(msec) * tick_per_msec)
2877c478bd9Sstevel@tonic-gate 
2887c478bd9Sstevel@tonic-gate #define	TICK_TO_USEC(tick)		((tick) * usec_per_tick)
2897c478bd9Sstevel@tonic-gate #define	USEC_TO_TICK(usec)		((usec) / usec_per_tick)
2907c478bd9Sstevel@tonic-gate #define	USEC_TO_TICK_ROUNDUP(usec)	\
2917c478bd9Sstevel@tonic-gate 	((usec) == 0 ? 0 : USEC_TO_TICK((usec) - 1) + 1)
2927c478bd9Sstevel@tonic-gate 
29387a18d3fSMadhavan Venkataraman #define	TICK_TO_NSEC(tick)		((hrtime_t)(tick) * nsec_per_tick)
2947c478bd9Sstevel@tonic-gate #define	NSEC_TO_TICK(nsec)		((nsec) / nsec_per_tick)
2957c478bd9Sstevel@tonic-gate #define	NSEC_TO_TICK_ROUNDUP(nsec)	\
2967c478bd9Sstevel@tonic-gate 	((nsec) == 0 ? 0 : NSEC_TO_TICK((nsec) - 1) + 1)
2977c478bd9Sstevel@tonic-gate 
2987c478bd9Sstevel@tonic-gate #define	TICK_TO_TIMEVAL(tick, tvp) {	\
2997c478bd9Sstevel@tonic-gate 	clock_t __tmptck = (tick);	\
3007c478bd9Sstevel@tonic-gate 	(tvp)->tv_sec = TICK_TO_SEC(__tmptck);	\
3017c478bd9Sstevel@tonic-gate 	(tvp)->tv_usec = TICK_TO_USEC(__tmptck - SEC_TO_TICK((tvp)->tv_sec)); \
3027c478bd9Sstevel@tonic-gate }
3037c478bd9Sstevel@tonic-gate 
3047c478bd9Sstevel@tonic-gate #define	TICK_TO_TIMEVAL32(tick, tvp) {	\
3057c478bd9Sstevel@tonic-gate 	clock_t __tmptck = (tick);	\
3067c478bd9Sstevel@tonic-gate 	time_t __tmptm = TICK_TO_SEC(__tmptck);	\
3077c478bd9Sstevel@tonic-gate 	(tvp)->tv_sec = (time32_t)__tmptm;	\
3087c478bd9Sstevel@tonic-gate 	(tvp)->tv_usec = TICK_TO_USEC(__tmptck - SEC_TO_TICK(__tmptm)); \
3097c478bd9Sstevel@tonic-gate }
3107c478bd9Sstevel@tonic-gate 
3117c478bd9Sstevel@tonic-gate #define	TICK_TO_TIMESTRUC(tick, tsp) {	\
3127c478bd9Sstevel@tonic-gate 	clock_t __tmptck = (tick);	\
3137c478bd9Sstevel@tonic-gate 	(tsp)->tv_sec = TICK_TO_SEC(__tmptck);	\
3147c478bd9Sstevel@tonic-gate 	(tsp)->tv_nsec = TICK_TO_NSEC(__tmptck - SEC_TO_TICK((tsp)->tv_sec)); \
3157c478bd9Sstevel@tonic-gate }
3167c478bd9Sstevel@tonic-gate 
3177c478bd9Sstevel@tonic-gate #define	TICK_TO_TIMESTRUC32(tick, tsp) {	\
3187c478bd9Sstevel@tonic-gate 	clock_t __tmptck = (tick);			\
3197c478bd9Sstevel@tonic-gate 	time_t __tmptm = TICK_TO_SEC(__tmptck);		\
3207c478bd9Sstevel@tonic-gate 	(tsp)->tv_sec = (time32_t)__tmptm;		\
3217c478bd9Sstevel@tonic-gate 	(tsp)->tv_nsec = TICK_TO_NSEC(__tmptck - SEC_TO_TICK(__tmptm));	\
3227c478bd9Sstevel@tonic-gate }
3237c478bd9Sstevel@tonic-gate 
3247c478bd9Sstevel@tonic-gate #define	TIMEVAL_TO_TICK(tvp)	\
3257c478bd9Sstevel@tonic-gate 	(SEC_TO_TICK((tvp)->tv_sec) + USEC_TO_TICK((tvp)->tv_usec))
3267c478bd9Sstevel@tonic-gate 
3277c478bd9Sstevel@tonic-gate #define	TIMESTRUC_TO_TICK(tsp)	\
3287c478bd9Sstevel@tonic-gate 	(SEC_TO_TICK((tsp)->tv_sec) + NSEC_TO_TICK((tsp)->tv_nsec))
3297c478bd9Sstevel@tonic-gate 
3307c478bd9Sstevel@tonic-gate typedef struct todinfo {
3317c478bd9Sstevel@tonic-gate 	int	tod_sec;	/* seconds 0-59 */
3327c478bd9Sstevel@tonic-gate 	int	tod_min;	/* minutes 0-59 */
3337c478bd9Sstevel@tonic-gate 	int	tod_hour;	/* hours 0-23 */
3347c478bd9Sstevel@tonic-gate 	int	tod_dow;	/* day of week 1-7 */
3357c478bd9Sstevel@tonic-gate 	int	tod_day;	/* day of month 1-31 */
3367c478bd9Sstevel@tonic-gate 	int	tod_month;	/* month 1-12 */
3377c478bd9Sstevel@tonic-gate 	int	tod_year;	/* year 70+ */
3387c478bd9Sstevel@tonic-gate } todinfo_t;
3397c478bd9Sstevel@tonic-gate 
3407c478bd9Sstevel@tonic-gate extern	int64_t		timedelta;
3413348528fSdm extern	int		timechanged;
3427c478bd9Sstevel@tonic-gate extern	int		tod_needsync;
3437c478bd9Sstevel@tonic-gate extern	kmutex_t	tod_lock;
344b5b48cc1Ssudheer extern	volatile timestruc_t	hrestime;
3457c478bd9Sstevel@tonic-gate extern	hrtime_t	hres_last_tick;
3467c478bd9Sstevel@tonic-gate extern	int64_t		hrestime_adj;
3477c478bd9Sstevel@tonic-gate extern	uint_t		adj_shift;
3487c478bd9Sstevel@tonic-gate 
3497c478bd9Sstevel@tonic-gate extern	timestruc_t	tod_get(void);
3507c478bd9Sstevel@tonic-gate extern	void		tod_set(timestruc_t);
3517c478bd9Sstevel@tonic-gate extern	void		set_hrestime(timestruc_t *);
3527c478bd9Sstevel@tonic-gate extern	todinfo_t	utc_to_tod(time_t);
3537c478bd9Sstevel@tonic-gate extern	time_t		tod_to_utc(todinfo_t);
3547c478bd9Sstevel@tonic-gate extern	int		hr_clock_lock(void);
3557c478bd9Sstevel@tonic-gate extern	void		hr_clock_unlock(int);
3567c478bd9Sstevel@tonic-gate extern	hrtime_t 	gethrtime(void);
3577c478bd9Sstevel@tonic-gate extern	hrtime_t 	gethrtime_unscaled(void);
3587c478bd9Sstevel@tonic-gate extern	hrtime_t	gethrtime_max(void);
3597c478bd9Sstevel@tonic-gate extern	hrtime_t	gethrtime_waitfree(void);
3607c478bd9Sstevel@tonic-gate extern	void		scalehrtime(hrtime_t *);
361113b131bSEric Saxe extern	uint64_t	unscalehrtime(hrtime_t);
3627c478bd9Sstevel@tonic-gate extern	void 		gethrestime(timespec_t *);
3637c478bd9Sstevel@tonic-gate extern	time_t 		gethrestime_sec(void);
3647c478bd9Sstevel@tonic-gate extern	void		gethrestime_lasttick(timespec_t *);
3657c478bd9Sstevel@tonic-gate extern	void		hrt2ts(hrtime_t, timestruc_t *);
3667c478bd9Sstevel@tonic-gate extern	hrtime_t	ts2hrt(const timestruc_t *);
3677c478bd9Sstevel@tonic-gate extern	void		hrt2tv(hrtime_t, struct timeval *);
3687c478bd9Sstevel@tonic-gate extern	hrtime_t	tv2hrt(struct timeval *);
3697c478bd9Sstevel@tonic-gate extern	int		itimerfix(struct timeval *, int);
3707c478bd9Sstevel@tonic-gate extern	int		itimerdecr(struct itimerval *, int);
3717c478bd9Sstevel@tonic-gate extern	void		timevaladd(struct timeval *, struct timeval *);
3727c478bd9Sstevel@tonic-gate extern	void		timevalsub(struct timeval *, struct timeval *);
3737c478bd9Sstevel@tonic-gate extern	void		timevalfix(struct timeval *);
3747c478bd9Sstevel@tonic-gate extern	void		dtrace_hres_tick(void);
3757c478bd9Sstevel@tonic-gate 
376d3d50737SRafael Vanoni extern clock_t		ddi_get_lbolt(void);
377d3d50737SRafael Vanoni extern int64_t		ddi_get_lbolt64(void);
378d3d50737SRafael Vanoni 
3797c478bd9Sstevel@tonic-gate #if defined(_SYSCALL32)
3807c478bd9Sstevel@tonic-gate extern	void		hrt2ts32(hrtime_t, timestruc32_t *);
3817c478bd9Sstevel@tonic-gate #endif
3827c478bd9Sstevel@tonic-gate 
3837c478bd9Sstevel@tonic-gate #endif /* _KERNEL */
3847c478bd9Sstevel@tonic-gate 
3857c478bd9Sstevel@tonic-gate #if !defined(_KERNEL) && !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
3867c478bd9Sstevel@tonic-gate int adjtime(struct timeval *, struct timeval *);
3877c478bd9Sstevel@tonic-gate #endif /* !defined(_KERNEL) && !defined(__XOPEN_OR_POSIX) ... */
3887c478bd9Sstevel@tonic-gate 
3897c478bd9Sstevel@tonic-gate #if !defined(_KERNEL) && !defined(__XOPEN_OR_POSIX) || \
3907c478bd9Sstevel@tonic-gate 	defined(_ATFILE_SOURCE) || defined(__EXTENSIONS__)
3917c478bd9Sstevel@tonic-gate int futimesat(int, const char *, const struct timeval *);
3927c478bd9Sstevel@tonic-gate #endif /* defined(__ATFILE_SOURCE) */
3937c478bd9Sstevel@tonic-gate 
3947c478bd9Sstevel@tonic-gate #if !defined(_KERNEL) && !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
3957c478bd9Sstevel@tonic-gate 	defined(__EXTENSIONS__)
3967c478bd9Sstevel@tonic-gate 
3977c478bd9Sstevel@tonic-gate int getitimer(int, struct itimerval *);
3987c478bd9Sstevel@tonic-gate int utimes(const char *, const struct timeval *);
3997c478bd9Sstevel@tonic-gate #if defined(_XPG4_2)
4007c478bd9Sstevel@tonic-gate int setitimer(int, const struct itimerval *_RESTRICT_KYWD,
4017c478bd9Sstevel@tonic-gate 	struct itimerval *_RESTRICT_KYWD);
4027c478bd9Sstevel@tonic-gate #else
4037c478bd9Sstevel@tonic-gate int setitimer(int, struct itimerval *_RESTRICT_KYWD,
4047c478bd9Sstevel@tonic-gate 	struct itimerval *_RESTRICT_KYWD);
4057c478bd9Sstevel@tonic-gate #endif /* defined(_XPG2_2) */
4067c478bd9Sstevel@tonic-gate 
4077c478bd9Sstevel@tonic-gate #endif /* !defined(_KERNEL) ... defined(_XPG4_2) */
4087c478bd9Sstevel@tonic-gate 
4097c478bd9Sstevel@tonic-gate /*
4107c478bd9Sstevel@tonic-gate  * gettimeofday() and settimeofday() were included in SVr4 due to their
4117c478bd9Sstevel@tonic-gate  * common use in BSD based applications.  They were to be included exactly
4127c478bd9Sstevel@tonic-gate  * as in BSD, with two parameters.  However, AT&T/USL noted that the second
4137c478bd9Sstevel@tonic-gate  * parameter was unused and deleted it, thereby making a routine included
4147c478bd9Sstevel@tonic-gate  * for compatibility, incompatible.
4157c478bd9Sstevel@tonic-gate  *
4167c478bd9Sstevel@tonic-gate  * XSH4.2 (spec 1170) defines gettimeofday and settimeofday to have two
4177c478bd9Sstevel@tonic-gate  * parameters.
4187c478bd9Sstevel@tonic-gate  *
4197c478bd9Sstevel@tonic-gate  * This has caused general disagreement in the application community as to
4207c478bd9Sstevel@tonic-gate  * the syntax of these routines.  Solaris defaults to the XSH4.2 definition.
4217c478bd9Sstevel@tonic-gate  * The flag _SVID_GETTOD may be used to force the SVID version.
4227c478bd9Sstevel@tonic-gate  */
4237c478bd9Sstevel@tonic-gate #if !defined(_KERNEL) && !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
4247c478bd9Sstevel@tonic-gate 
4257c478bd9Sstevel@tonic-gate #if defined(_SVID_GETTOD)
4267c478bd9Sstevel@tonic-gate int settimeofday(struct timeval *);
4277c478bd9Sstevel@tonic-gate #else
4287c478bd9Sstevel@tonic-gate int settimeofday(struct timeval *, void *);
4297c478bd9Sstevel@tonic-gate #endif
4307c478bd9Sstevel@tonic-gate hrtime_t	gethrtime(void);
4317c478bd9Sstevel@tonic-gate hrtime_t	gethrvtime(void);
4327c478bd9Sstevel@tonic-gate 
4337c478bd9Sstevel@tonic-gate #endif /* !(defined _KERNEL) && !defined(__XOPEN_OR_POSIX) ... */
4347c478bd9Sstevel@tonic-gate 
4357c478bd9Sstevel@tonic-gate #if !defined(_KERNEL) && !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || \
4367c478bd9Sstevel@tonic-gate 	defined(__EXTENSIONS__)
4377c478bd9Sstevel@tonic-gate 
4387c478bd9Sstevel@tonic-gate #if defined(_SVID_GETTOD)
4397c478bd9Sstevel@tonic-gate int gettimeofday(struct timeval *);
4407c478bd9Sstevel@tonic-gate #else
4417c478bd9Sstevel@tonic-gate int gettimeofday(struct timeval *_RESTRICT_KYWD, void *_RESTRICT_KYWD);
4427c478bd9Sstevel@tonic-gate #endif
4437c478bd9Sstevel@tonic-gate 
4447c478bd9Sstevel@tonic-gate #endif /* !defined(_KERNEL) && !defined(__XOPEN_OR_POSIX) ... */
4457c478bd9Sstevel@tonic-gate 
4467c478bd9Sstevel@tonic-gate /*
4477c478bd9Sstevel@tonic-gate  * The inclusion of <time.h> is historical and was added for
4487c478bd9Sstevel@tonic-gate  * backward compatibility in delta 1.2 when a number of definitions
4497c478bd9Sstevel@tonic-gate  * were moved out of <sys/time.h>.  More recently, the timespec and
4507c478bd9Sstevel@tonic-gate  * itimerspec structure definitions, along with the _CLOCK_*, CLOCK_*,
4517c478bd9Sstevel@tonic-gate  * _TIMER_*, and TIMER_* symbols were moved to <sys/time_impl.h>,
4527c478bd9Sstevel@tonic-gate  * which is now included by <time.h>.  This change was due to POSIX
4537c478bd9Sstevel@tonic-gate  * 1003.1b-1993 and X/Open UNIX 98 requirements.  For non-POSIX and
4547c478bd9Sstevel@tonic-gate  * non-X/Open applications, including this header will still make
4557c478bd9Sstevel@tonic-gate  * visible these definitions.
4567c478bd9Sstevel@tonic-gate  */
457b819cea2SGordon Ross #if !defined(_BOOT) && !defined(_KERNEL) && !defined(_FAKE_KERNEL) && \
458ae115bc7Smrj 	!defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
4597c478bd9Sstevel@tonic-gate #include <time.h>
4607c478bd9Sstevel@tonic-gate #endif
4617c478bd9Sstevel@tonic-gate 
4627c478bd9Sstevel@tonic-gate /*
4637c478bd9Sstevel@tonic-gate  * The inclusion of <sys/select.h> is needed for the FD_CLR,
4647c478bd9Sstevel@tonic-gate  * FD_ISSET, FD_SET, and FD_SETSIZE macros as well as the
4657c478bd9Sstevel@tonic-gate  * select() prototype defined in the XOpen specifications
4667c478bd9Sstevel@tonic-gate  * beginning with XSH4v2.  Placement required after definition
4677c478bd9Sstevel@tonic-gate  * for itimerval.
4687c478bd9Sstevel@tonic-gate  */
469b819cea2SGordon Ross #if !defined(_KERNEL) && !defined(_FAKE_KERNEL) && \
470b819cea2SGordon Ross 	!defined(__XOPEN_OR_POSIX) || \
471b819cea2SGordon Ross 	defined(_XPG4_2) || defined(__EXTENSIONS__)
4727c478bd9Sstevel@tonic-gate #include <sys/select.h>
4737c478bd9Sstevel@tonic-gate #endif
4747c478bd9Sstevel@tonic-gate 
4757c478bd9Sstevel@tonic-gate #endif	/* _ASM */
4767c478bd9Sstevel@tonic-gate 
4777c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
4787c478bd9Sstevel@tonic-gate }
4797c478bd9Sstevel@tonic-gate #endif
4807c478bd9Sstevel@tonic-gate 
4817c478bd9Sstevel@tonic-gate #endif	/* _SYS_TIME_H */
482