/*	$OpenBSD: time.h,v 1.11 2000/10/10 13:36:48 itojun Exp $	*//*	$NetBSD: time.h,v 1.18 1996/04/23 10:29:33 mycroft Exp $	*//* * 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. * 3. 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	8.2 (Berkeley) 7/10/94 */#ifndef _SYS_TIME_H_#define _SYS_TIME_H_#include <sys/types.h>/* * Structure returned by gettimeofday(2) system call, * and used in other calls. */struct timeval {	long	tv_sec;		/* seconds */	long	tv_usec;	/* and microseconds */};/* * Structure defined by POSIX.1b to be like a timeval. */struct timespec {	time_t	tv_sec;		/* seconds */	long	tv_nsec;	/* and nanoseconds */};#define	TIMEVAL_TO_TIMESPEC(tv, ts) {					\	(ts)->tv_sec = (tv)->tv_sec;					\	(ts)->tv_nsec = (tv)->tv_usec * 1000;				\}#define	TIMESPEC_TO_TIMEVAL(tv, ts) {					\	(tv)->tv_sec = (ts)->tv_sec;					\	(tv)->tv_usec = (ts)->tv_nsec / 1000;				\}struct timezone {	int	tz_minuteswest;	/* minutes west of Greenwich */	int	tz_dsttime;	/* type of dst correction */};#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 *//* Operations on timevals. */#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)/* Operations on timespecs. */#define	timespecclear(tsp)		(tsp)->tv_sec = (tsp)->tv_nsec = 0#define	timespecisset(tsp)		((tsp)->tv_sec || (tsp)->tv_nsec)#define	timespeccmp(tsp, usp, cmp)					\	(((tsp)->tv_sec == (usp)->tv_sec) ?				\	    ((tsp)->tv_nsec cmp (usp)->tv_nsec) :			\	    ((tsp)->tv_sec cmp (usp)->tv_sec))#define	timespecadd(tsp, usp, vsp)					\	do {								\		(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec;		\		(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec;	\		if ((vsp)->tv_nsec >= 1000000000L) {			\			(vsp)->tv_sec++;				\			(vsp)->tv_nsec -= 1000000000L;			\		}							\	} while (0)#define	timespecsub(tsp, usp, vsp)					\	do {								\		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\		if ((vsp)->tv_nsec < 0) {				\			(vsp)->tv_sec--;				\			(vsp)->tv_nsec += 1000000000L;			\		}							\	} while (0)/* * Names of the interval timers, and structure * defining a timer setting. */#define	ITIMER_REAL	0#define	ITIMER_VIRTUAL	1#define	ITIMER_PROF	2struct	itimerval {	struct	timeval it_interval;	/* timer interval */	struct	timeval it_value;	/* current value */};/* * Getkerninfo clock information structure */struct clockinfo {	int	hz;		/* clock frequency */	int	tick;		/* micro-seconds per hz tick */	int	tickadj;	/* clock skew rate for adjtime() */	int	stathz;		/* statistics clock frequency */	int	profhz;		/* profiling clock frequency */};#define CLOCK_REALTIME	0#define CLOCK_VIRTUAL	1#define CLOCK_PROF	2#define TIMER_RELTIME	0x0	/* relative timer */#define TIMER_ABSTIME	0x1	/* absolute timer *//* --- stuff got cut here - niels --- */#endif /* !_SYS_TIME_H_ */