src/parsec/disk-image/parsec/parsec-benchmark/pkgs/libs/uptcpip/src/include/sys/bsd_time.h - public/gem5-resources - Git at Google

 /*-
  * Copyright (c) 1982, 1986, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  *	@(#)time.h	8.5 (Berkeley) 5/4/95
  * $FreeBSD$
  */

 #ifndef _BSD_SYS_TIME_H_
 #define _BSD_SYS_TIME_H_

 #include <sys/bsd__timeval.h>
 #include <sys/bsd_types.h>
 #include <sys/bsd_timespec.h>

 #ifndef __USE_BSD
 #define __USE_BSD
 #endif

 #include <sys/time.h>

 #if 0
 struct timezone {
 	int	tz_minuteswest;	/* minutes west of Greenwich */
 	int	tz_dsttime;	/* type of dst correction */
 };
 #endif //0

 #define	DST_NONE	0	/* not on dst */
 #define	DST_USA		1	/* USA style dst */
 #define	DST_AUST	2	/* Australian style dst */
 #define	DST_WET		3	/* Western European dst */
 #define	DST_MET		4	/* Middle European dst */
 #define	DST_EET		5	/* Eastern European dst */
 #define	DST_CAN		6	/* Canada */

 #if __BSD_VISIBLE
 struct bintime {
 	time_t	sec;
 	uint64_t frac;
 };

 static __inline void
 bintime_addx(struct bintime *bt, uint64_t x)
 {
 	uint64_t u;

 	u = bt->frac;
 	bt->frac += x;
 	if (u > bt->frac)
 		bt->sec++;
 }

 static __inline void
 bintime_add(struct bintime *bt, const struct bintime *bt2)
 {
 	uint64_t u;

 	u = bt->frac;
 	bt->frac += bt2->frac;
 	if (u > bt->frac)
 		bt->sec++;
 	bt->sec += bt2->sec;
 }

 static __inline void
 bintime_sub(struct bintime *bt, const struct bintime *bt2)
 {
 	uint64_t u;

 	u = bt->frac;
 	bt->frac -= bt2->frac;
 	if (u < bt->frac)
 		bt->sec--;
 	bt->sec -= bt2->sec;
 }

 /*-
  * Background information:
  *
  * When converting between timestamps on parallel timescales of differing
  * resolutions it is historical and scientific practice to round down rather
  * than doing 4/5 rounding.
  *
  *   The date changes at midnight, not at noon.
  *
  *   Even at 15:59:59.999999999 it's not four'o'clock.
  *
  *   time_second ticks after N.999999999 not after N.4999999999
  */

 static __inline void
 bintime2timespec(const struct bintime *bt, struct timespec *ts)
 {

 	ts->tv_sec = bt->sec;
 	ts->tv_nsec = ((uint64_t)1000000000 * (uint32_t)(bt->frac >> 32)) >> 32;
 }

 static __inline void
 timespec2bintime(const struct timespec *ts, struct bintime *bt)
 {

 	bt->sec = ts->tv_sec;
 	/* 18446744073 = int(2^64 / 1000000000) */
 	bt->frac = ts->tv_nsec * (uint64_t)18446744073LL;
 }

 static __inline void
 bintime2timeval(const struct bintime *bt, struct timeval *tv)
 {

 	tv->tv_sec = bt->sec;
 	tv->tv_usec = ((uint64_t)1000000 * (uint32_t)(bt->frac >> 32)) >> 32;
 }

 static __inline void
 timeval2bintime(const struct timeval *tv, struct bintime *bt)
 {

 	bt->sec = tv->tv_sec;
 	/* 18446744073709 = int(2^64 / 1000000) */
 	bt->frac = tv->tv_usec * (uint64_t)18446744073709LL;
 }
 #endif /* __BSD_VISIBLE */

 #ifdef _FREEBSD_KERNEL

 /* Operations on timespecs */
 #define	timespecclear(tvp)	((tvp)->tv_sec = (tvp)->tv_nsec = 0)
 #define	timespecisset(tvp)	((tvp)->tv_sec || (tvp)->tv_nsec)
 #define	timespeccmp(tvp, uvp, cmp)					\
 	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
 	    ((tvp)->tv_nsec cmp (uvp)->tv_nsec) :			\
 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
 #define timespecadd(vvp, uvp)						\
 	do {								\
 		(vvp)->tv_sec += (uvp)->tv_sec;				\
 		(vvp)->tv_nsec += (uvp)->tv_nsec;			\
 		if ((vvp)->tv_nsec >= 1000000000) {			\
 			(vvp)->tv_sec++;				\
 			(vvp)->tv_nsec -= 1000000000;			\
 		}							\
 	} while (0)
 #define timespecsub(vvp, uvp)						\
 	do {								\
 		(vvp)->tv_sec -= (uvp)->tv_sec;				\
 		(vvp)->tv_nsec -= (uvp)->tv_nsec;			\
 		if ((vvp)->tv_nsec < 0) {				\
 			(vvp)->tv_sec--;				\
 			(vvp)->tv_nsec += 1000000000;			\
 		}							\
 	} while (0)

 /* Operations on timevals. */

 #define	timevalclear(tvp)		((tvp)->tv_sec = (tvp)->tv_usec = 0)
 #define	timevalisset(tvp)		((tvp)->tv_sec || (tvp)->tv_usec)
 #define	timevalcmp(tvp, uvp, cmp)					\
 	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
 	    ((tvp)->tv_usec cmp (uvp)->tv_usec) :			\
 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))

 /* timevaladd and timevalsub are not inlined */

 #endif /* _FREEBSD_KERNEL */

 #if 0
 #ifndef _FREEBSD_KERNEL			/* NetBSD/OpenBSD compatible interfaces */

 #define	timerclear(tvp)		((tvp)->tv_sec = (tvp)->tv_usec = 0)
 #define	timerisset(tvp)		((tvp)->tv_sec || (tvp)->tv_usec)
 #define	timercmp(tvp, uvp, cmp)					\
 	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
 	    ((tvp)->tv_usec cmp (uvp)->tv_usec) :			\
 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
 #define timeradd(tvp, uvp, vvp)						\
 	do {								\
 		(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;		\
 		(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;	\
 		if ((vvp)->tv_usec >= 1000000) {			\
 			(vvp)->tv_sec++;				\
 			(vvp)->tv_usec -= 1000000;			\
 		}							\
 	} while (0)
 #define timersub(tvp, uvp, vvp)						\
 	do {								\
 		(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;		\
 		(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;	\
 		if ((vvp)->tv_usec < 0) {				\
 			(vvp)->tv_sec--;				\
 			(vvp)->tv_usec += 1000000;			\
 		}							\
 	} while (0)
 #endif
 #endif //0

 /*
  * Names of the interval timers, and structure
  * defining a timer setting.
  */
 //#define	ITIMER_REAL	0
 //#define	ITIMER_VIRTUAL	1
 //#define	ITIMER_PROF	2

 #if 0
 struct itimerval {
 	struct	timeval it_interval;	/* timer interval */
 	struct	timeval it_value;	/* current value */
 };
 #endif //0

 /*
  * Getkerninfo clock information structure
  */
 struct clockinfo {
 	int	hz;		/* clock frequency */
 	int	tick;		/* micro-seconds per hz tick */
 	int	spare;
 	int	stathz;		/* statistics clock frequency */
 	int	profhz;		/* profiling clock frequency */
 };

 /* These macros are also in time.h. */
 #ifndef CLOCK_REALTIME
 #define CLOCK_REALTIME	0
 #define CLOCK_VIRTUAL	1
 #define CLOCK_PROF	2
 #define CLOCK_MONOTONIC	4
 #define CLOCK_UPTIME	5		/* FreeBSD-specific. */
 #define CLOCK_UPTIME_PRECISE	7	/* FreeBSD-specific. */
 #define CLOCK_UPTIME_FAST	8	/* FreeBSD-specific. */
 #define CLOCK_REALTIME_PRECISE	9	/* FreeBSD-specific. */
 #define CLOCK_REALTIME_FAST	10	/* FreeBSD-specific. */
 #define CLOCK_MONOTONIC_PRECISE	11	/* FreeBSD-specific. */
 #define CLOCK_MONOTONIC_FAST	12	/* FreeBSD-specific. */
 #define CLOCK_SECOND	13		/* FreeBSD-specific. */
 #define CLOCK_THREAD_CPUTIME_ID	14
 #endif

 #ifndef TIMER_ABSTIME
 #define TIMER_RELTIME	0x0	/* relative timer */
 #define TIMER_ABSTIME	0x1	/* absolute timer */
 #endif

 #ifdef _FREEBSD_KERNEL

 /*
  * Kernel to clock driver interface.
  */
 void	inittodr(time_t base);
 void	resettodr(void);

 extern time_t	time_second;
 extern time_t	time_uptime;
 extern struct timeval boottime;

 /*
  * Functions for looking at our clock: [get]{bin,nano,micro}[up]time()
  *
  * Functions without the "get" prefix returns the best timestamp
  * we can produce in the given format.
  *
  * "bin"   == struct bintime  == seconds + 64 bit fraction of seconds.
  * "nano"  == struct timespec == seconds + nanoseconds.
  * "micro" == struct timeval  == seconds + microseconds.
  *
  * Functions containing "up" returns time relative to boot and
  * should be used for calculating time intervals.
  *
  * Functions without "up" returns GMT time.
  *
  * Functions with the "get" prefix returns a less precise result
  * much faster than the functions without "get" prefix and should
  * be used where a precision of 10 msec is acceptable or where
  * performance is priority. (NB: "precision", _not_ "resolution" !)
  *
  */

 void	binuptime(struct bintime *bt);
 void	nanouptime(struct timespec *tsp);
 void	microuptime(struct timeval *tvp);

 void	bintime(struct bintime *bt);
 void	nanotime(struct timespec *tsp);
 void	microtime(struct timeval *tvp);

 void	getbinuptime(struct bintime *bt);
 void	getnanouptime(struct timespec *tsp);
 void	getmicrouptime(struct timeval *tvp);

 void	getbintime(struct bintime *bt);
 void	getnanotime(struct timespec *tsp);
 void	getmicrotime(struct timeval *tvp);

 /* Other functions */
 int	itimerdecr(struct itimerval *itp, int usec);
 int	itimerfix(struct timeval *tv);
 int	ppsratecheck(struct timeval *, int *, int);
 int	ratecheck(struct timeval *, const struct timeval *);
 void	timevaladd(struct timeval *t1, const struct timeval *t2);
 void	timevalsub(struct timeval *t1, const struct timeval *t2);
 int	tvtohz(struct timeval *tv);
 #else /* !_FREEBSD_KERNEL */
 #include <bsd_time.h>

 #include <sys/bsd_cdefs.h>
 #include <sys/bsd_select.h>

 __BEGIN_DECLS
 int	setitimer(int, const struct itimerval *, struct itimerval *);
 int	utimes(const char *, const struct timeval *);

 #if __BSD_VISIBLE
 int	adjtime(const struct timeval *, struct timeval *);
 int	futimes(int, const struct timeval *);
 int	futimesat(int, const char *, const struct timeval [2]);
 int	lutimes(const char *, const struct timeval *);
 int	settimeofday(const struct timeval *, const struct timezone *);
 #endif

 #if __XSI_VISIBLE
 int	getitimer(int, struct itimerval *);
 int	gettimeofday(struct timeval *, struct timezone *);
 #endif

 __END_DECLS

 #endif /* !_FREEBSD_KERNEL */

 #endif /* !_BSD_SYS_TIME_H_ */
	/*-
	* Copyright (c) 1982, 1986, 1993
	* The Regents of the University of California. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 4. Neither the name of the University nor the names of its contributors
	* may be used to endorse or promote products derived from this software
	* without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.
	*
	* @(#)time.h 8.5 (Berkeley) 5/4/95
	* $FreeBSD$
	*/

	#ifndef _BSD_SYS_TIME_H_
	#define _BSD_SYS_TIME_H_

	#include <sys/bsd__timeval.h>
	#include <sys/bsd_types.h>
	#include <sys/bsd_timespec.h>

	#ifndef __USE_BSD
	#define __USE_BSD
	#endif

	#include <sys/time.h>

	#if 0
	struct timezone {
	int tz_minuteswest; /* minutes west of Greenwich */
	int tz_dsttime; /* type of dst correction */
	};
	#endif //0

	#define DST_NONE 0 /* not on dst */
	#define DST_USA 1 /* USA style dst */
	#define DST_AUST 2 /* Australian style dst */
	#define DST_WET 3 /* Western European dst */
	#define DST_MET 4 /* Middle European dst */
	#define DST_EET 5 /* Eastern European dst */
	#define DST_CAN 6 /* Canada */

	#if __BSD_VISIBLE
	struct bintime {
	time_t sec;
	uint64_t frac;
	};

	static __inline void
	bintime_addx(struct bintime *bt, uint64_t x)
	{
	uint64_t u;

	u = bt->frac;
	bt->frac += x;
	if (u > bt->frac)
	bt->sec++;
	}

	static __inline void
	bintime_add(struct bintime bt, const struct bintime bt2)
	{
	uint64_t u;

	u = bt->frac;
	bt->frac += bt2->frac;
	if (u > bt->frac)
	bt->sec++;
	bt->sec += bt2->sec;
	}

	static __inline void
	bintime_sub(struct bintime bt, const struct bintime bt2)
	{
	uint64_t u;

	u = bt->frac;
	bt->frac -= bt2->frac;
	if (u < bt->frac)
	bt->sec--;
	bt->sec -= bt2->sec;
	}

	/*-
	* Background information:
	*
	* When converting between timestamps on parallel timescales of differing
	* resolutions it is historical and scientific practice to round down rather
	* than doing 4/5 rounding.
	*
	* The date changes at midnight, not at noon.
	*
	* Even at 15:59:59.999999999 it's not four'o'clock.
	*
	* time_second ticks after N.999999999 not after N.4999999999
	*/

	static __inline void
	bintime2timespec(const struct bintime bt, struct timespec ts)
	{

	ts->tv_sec = bt->sec;
	ts->tv_nsec = ((uint64_t)1000000000 * (uint32_t)(bt->frac >> 32)) >> 32;
	}

	static __inline void
	timespec2bintime(const struct timespec ts, struct bintime bt)
	{

	bt->sec = ts->tv_sec;
	/* 18446744073 = int(2^64 / 1000000000) */
	bt->frac = ts->tv_nsec * (uint64_t)18446744073LL;
	}

	static __inline void
	bintime2timeval(const struct bintime bt, struct timeval tv)
	{

	tv->tv_sec = bt->sec;
	tv->tv_usec = ((uint64_t)1000000 * (uint32_t)(bt->frac >> 32)) >> 32;
	}

	static __inline void
	timeval2bintime(const struct timeval tv, struct bintime bt)
	{

	bt->sec = tv->tv_sec;
	/* 18446744073709 = int(2^64 / 1000000) */
	bt->frac = tv->tv_usec * (uint64_t)18446744073709LL;
	}
	#endif /* __BSD_VISIBLE */

	#ifdef _FREEBSD_KERNEL

	/* Operations on timespecs */
	#define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0)
	#define timespecisset(tvp) ((tvp)->tv_sec \|\| (tvp)->tv_nsec)
	#define timespeccmp(tvp, uvp, cmp) \
	(((tvp)->tv_sec == (uvp)->tv_sec) ? \
	((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \
	((tvp)->tv_sec cmp (uvp)->tv_sec))
	#define timespecadd(vvp, uvp) \
	do { \
	(vvp)->tv_sec += (uvp)->tv_sec; \
	(vvp)->tv_nsec += (uvp)->tv_nsec; \
	if ((vvp)->tv_nsec >= 1000000000) { \
	(vvp)->tv_sec++; \
	(vvp)->tv_nsec -= 1000000000; \
	} \
	} while (0)
	#define timespecsub(vvp, uvp) \
	do { \
	(vvp)->tv_sec -= (uvp)->tv_sec; \
	(vvp)->tv_nsec -= (uvp)->tv_nsec; \
	if ((vvp)->tv_nsec < 0) { \
	(vvp)->tv_sec--; \
	(vvp)->tv_nsec += 1000000000; \
	} \
	} while (0)

	/* Operations on timevals. */

	#define timevalclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)
	#define timevalisset(tvp) ((tvp)->tv_sec \|\| (tvp)->tv_usec)
	#define timevalcmp(tvp, uvp, cmp) \
	(((tvp)->tv_sec == (uvp)->tv_sec) ? \
	((tvp)->tv_usec cmp (uvp)->tv_usec) : \
	((tvp)->tv_sec cmp (uvp)->tv_sec))

	/* timevaladd and timevalsub are not inlined */

	#endif /* _FREEBSD_KERNEL */

	#if 0
	#ifndef _FREEBSD_KERNEL /* NetBSD/OpenBSD compatible interfaces */

	#define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)
	#define timerisset(tvp) ((tvp)->tv_sec \|\| (tvp)->tv_usec)
	#define timercmp(tvp, uvp, cmp) \
	(((tvp)->tv_sec == (uvp)->tv_sec) ? \
	((tvp)->tv_usec cmp (uvp)->tv_usec) : \
	((tvp)->tv_sec cmp (uvp)->tv_sec))
	#define timeradd(tvp, uvp, vvp) \
	do { \
	(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
	(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
	if ((vvp)->tv_usec >= 1000000) { \
	(vvp)->tv_sec++; \
	(vvp)->tv_usec -= 1000000; \
	} \
	} while (0)
	#define timersub(tvp, uvp, vvp) \
	do { \
	(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
	(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
	if ((vvp)->tv_usec < 0) { \
	(vvp)->tv_sec--; \
	(vvp)->tv_usec += 1000000; \
	} \
	} while (0)
	#endif
	#endif //0

	/*
	* Names of the interval timers, and structure
	* defining a timer setting.
	*/
	//#define ITIMER_REAL 0
	//#define ITIMER_VIRTUAL 1
	//#define ITIMER_PROF 2

	#if 0
	struct itimerval {
	struct timeval it_interval; /* timer interval */
	struct timeval it_value; /* current value */
	};
	#endif //0

	/*
	* Getkerninfo clock information structure
	*/
	struct clockinfo {
	int hz; /* clock frequency */
	int tick; /* micro-seconds per hz tick */
	int spare;
	int stathz; /* statistics clock frequency */
	int profhz; /* profiling clock frequency */
	};

	/* These macros are also in time.h. */
	#ifndef CLOCK_REALTIME
	#define CLOCK_REALTIME 0
	#define CLOCK_VIRTUAL 1
	#define CLOCK_PROF 2
	#define CLOCK_MONOTONIC 4
	#define CLOCK_UPTIME 5 /* FreeBSD-specific. */
	#define CLOCK_UPTIME_PRECISE 7 /* FreeBSD-specific. */
	#define CLOCK_UPTIME_FAST 8 /* FreeBSD-specific. */
	#define CLOCK_REALTIME_PRECISE 9 /* FreeBSD-specific. */
	#define CLOCK_REALTIME_FAST 10 /* FreeBSD-specific. */
	#define CLOCK_MONOTONIC_PRECISE 11 /* FreeBSD-specific. */
	#define CLOCK_MONOTONIC_FAST 12 /* FreeBSD-specific. */
	#define CLOCK_SECOND 13 /* FreeBSD-specific. */
	#define CLOCK_THREAD_CPUTIME_ID 14
	#endif

	#ifndef TIMER_ABSTIME
	#define TIMER_RELTIME 0x0 /* relative timer */
	#define TIMER_ABSTIME 0x1 /* absolute timer */
	#endif

	#ifdef _FREEBSD_KERNEL

	/*
	* Kernel to clock driver interface.
	*/
	void inittodr(time_t base);
	void resettodr(void);

	extern time_t time_second;
	extern time_t time_uptime;
	extern struct timeval boottime;

	/*
	* Functions for looking at our clock: [get]{bin,nano,micro}[up]time()
	*
	* Functions without the "get" prefix returns the best timestamp
	* we can produce in the given format.
	*
	* "bin" == struct bintime == seconds + 64 bit fraction of seconds.
	* "nano" == struct timespec == seconds + nanoseconds.
	* "micro" == struct timeval == seconds + microseconds.
	*
	* Functions containing "up" returns time relative to boot and
	* should be used for calculating time intervals.
	*
	* Functions without "up" returns GMT time.
	*
	* Functions with the "get" prefix returns a less precise result
	* much faster than the functions without "get" prefix and should
	* be used where a precision of 10 msec is acceptable or where
	* performance is priority. (NB: "precision", _not_ "resolution" !)
	*
	*/

	void binuptime(struct bintime *bt);
	void nanouptime(struct timespec *tsp);
	void microuptime(struct timeval *tvp);

	void bintime(struct bintime *bt);
	void nanotime(struct timespec *tsp);
	void microtime(struct timeval *tvp);

	void getbinuptime(struct bintime *bt);
	void getnanouptime(struct timespec *tsp);
	void getmicrouptime(struct timeval *tvp);

	void getbintime(struct bintime *bt);
	void getnanotime(struct timespec *tsp);
	void getmicrotime(struct timeval *tvp);

	/* Other functions */
	int itimerdecr(struct itimerval *itp, int usec);
	int itimerfix(struct timeval *tv);
	int ppsratecheck(struct timeval , int , int);
	int ratecheck(struct timeval , const struct timeval );
	void timevaladd(struct timeval t1, const struct timeval t2);
	void timevalsub(struct timeval t1, const struct timeval t2);
	int tvtohz(struct timeval *tv);
	#else /* !_FREEBSD_KERNEL */
	#include <bsd_time.h>

	#include <sys/bsd_cdefs.h>
	#include <sys/bsd_select.h>

	__BEGIN_DECLS
	int setitimer(int, const struct itimerval , struct itimerval );
	int utimes(const char , const struct timeval );

	#if __BSD_VISIBLE
	int adjtime(const struct timeval , struct timeval );
	int futimes(int, const struct timeval *);
	int futimesat(int, const char *, const struct timeval [2]);
	int lutimes(const char , const struct timeval );
	int settimeofday(const struct timeval , const struct timezone );
	#endif

	#if __XSI_VISIBLE
	int getitimer(int, struct itimerval *);
	int gettimeofday(struct timeval , struct timezone );
	#endif

	__END_DECLS

	#endif /* !_FREEBSD_KERNEL */

	#endif /* !_BSD_SYS_TIME_H_ */