/*	@(#)time.h	13.3 (RC International) 91/10/02	*/

#ifndef _TIME_H_KERNEL
#define	_TIME_H_KERNEL

/*
 * Structure returned by the BSD gettimeofday(2)
 * system call, and used in other calls.
 */
struct timeval {
	long	tv_sec;		/* seconds */
	long	tv_usec;	/* microseconds */
};

struct	tm {
	int	tm_sec;
	int	tm_min;
	int	tm_hour;
	int	tm_mday;
	int	tm_mon;
	int	tm_year;
	int	tm_wday;
	int	tm_yday;
	int	tm_isdst;
	long	tm_gmtoff;	/* BSD */
	char	*tm_zone;	/* BSD */
};

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 dst */
#define	DST_GB		7	/* Great Britain and Eire */
#define	DST_RUM		8	/* Rumania */
#define	DST_TUR		9	/* Turkey */
#define	DST_AUSTALT	10	/* Australian style with shift in 1986 */

/*
 * Operations on timevals.
 *
 * NB: timercmp does not work for >= or <=.
 */
#define	timerisset(tvp)		((tvp)->tv_sec || (tvp)->tv_usec)
#define	timercmp(tvp, uvp, cmp)	\
	((tvp)->tv_sec cmp (uvp)->tv_sec || \
	 (tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
#define	timerclear(tvp)		(tvp)->tv_sec = (tvp)->tv_usec = 0

/*
 * Names of the interval timers, and structure
 * defining a timer setting.
 */
#define	ITIMER_REAL	0
#define	ITIMER_VIRTUAL	1
#define	ITIMER_PROF	2
#define ITIMER_TIMEOUT	3
#define ITIMER_REOPEN   4

struct	itimerval {
	struct	timeval it_interval;	/* timer interval */
	struct	timeval it_value;	/* current value */
};

#include <time.h>

#endif /* _TIME_H_KERNEL */