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/*
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 * Copyright (c) 1982, 1986, 1993
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 *        The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 *        @(#)time.h        8.5 (Berkeley) 5/4/95
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 */
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#ifndef _SYS_TIME_H_
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#define _SYS_TIME_H_
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#include <sys/types.h>
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/*
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 * Structure returned by gettimeofday(2) system call,
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 * and used in other calls.
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 */
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struct timeval {
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        long        tv_sec;                /* seconds */
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        long        tv_usec;        /* and microseconds */
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};
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/*
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 * Structure defined by POSIX.4 to be like a timeval.
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 */
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struct timespec {
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        time_t        ts_sec;                /* seconds */
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        long        ts_nsec;        /* and nanoseconds */
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};
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#define        TIMEVAL_TO_TIMESPEC(tv, ts) {                                        \
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        (ts)->ts_sec = (tv)->tv_sec;                                        \
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        (ts)->ts_nsec = (tv)->tv_usec * 1000;                                \
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}
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#define        TIMESPEC_TO_TIMEVAL(tv, ts) {                                        \
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        (tv)->tv_sec = (ts)->ts_sec;                                        \
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        (tv)->tv_usec = (ts)->ts_nsec / 1000;                                \
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}
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struct timezone {
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        int        tz_minuteswest;        /* minutes west of Greenwich */
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        int        tz_dsttime;        /* type of dst correction */
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};
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#define        DST_NONE        0        /* not on dst */
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#define        DST_USA                1        /* USA style dst */
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#define        DST_AUST        2        /* Australian style dst */
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#define        DST_WET                3        /* Western European dst */
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#define        DST_MET                4        /* Middle European dst */
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#define        DST_EET                5        /* Eastern European dst */
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#define        DST_CAN                6        /* Canada */
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/* Operations on timevals. */
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#define        timerclear(tvp)                (tvp)->tv_sec = (tvp)->tv_usec = 0
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#define        timerisset(tvp)                ((tvp)->tv_sec || (tvp)->tv_usec)
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#define        timercmp(tvp, uvp, cmp)                                                \
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        (((tvp)->tv_sec == (uvp)->tv_sec) ?                                \
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            ((tvp)->tv_usec cmp (uvp)->tv_usec) :                        \
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            ((tvp)->tv_sec cmp (uvp)->tv_sec))
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/*
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 * Names of the interval timers, and structure
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 * defining a timer setting.
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 */
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#define        ITIMER_REAL        0
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#define        ITIMER_VIRTUAL        1
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#define        ITIMER_PROF        2
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struct        itimerval {
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        struct        timeval it_interval;        /* timer interval */
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        struct        timeval it_value;        /* current value */
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};
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/*
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 * Getkerninfo clock information structure
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 */
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struct clockinfo {
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        int        hz;                /* clock frequency */
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        int        tick;                /* micro-seconds per hz tick */
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        int        stathz;                /* statistics clock frequency */
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        int        profhz;                /* profiling clock frequency */
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};
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#ifndef KERNEL
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#include <time.h>
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#ifndef _POSIX_SOURCE
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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int        gettimeofday(struct timeval *, struct timezone *);
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#if 0
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int        adjtime(const struct timeval *, struct timeval *);
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int        getitimer(int, struct itimerval *);
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int        setitimer(int, const struct itimerval *, struct itimerval *);
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int        settimeofday(const struct timeval *, const struct timezone *);
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int        utimes(const char *, const struct timeval *);
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#endif
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__END_DECLS
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#endif /* !POSIX */
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#endif /* !KERNEL */
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#endif /* !_SYS_TIME_H_ */