williamr@2: /*- williamr@2: * Copyright (c) 1982, 1986, 1993 williamr@2: * The Regents of the University of California. All rights reserved. williamr@2: * williamr@2: * Redistribution and use in source and binary forms, with or without williamr@2: * modification, are permitted provided that the following conditions williamr@2: * are met: williamr@2: * 1. Redistributions of source code must retain the above copyright williamr@2: * notice, this list of conditions and the following disclaimer. williamr@2: * 2. Redistributions in binary form must reproduce the above copyright williamr@2: * notice, this list of conditions and the following disclaimer in the williamr@2: * documentation and/or other materials provided with the distribution. williamr@2: * 4. Neither the name of the University nor the names of its contributors williamr@2: * may be used to endorse or promote products derived from this software williamr@2: * without specific prior written permission. williamr@2: * williamr@2: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND williamr@2: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE williamr@2: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE williamr@2: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE williamr@2: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL williamr@2: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS williamr@2: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) williamr@2: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT williamr@2: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY williamr@2: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF williamr@2: * SUCH DAMAGE. williamr@4: * © * Portions Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. williamr@2: * @(#)time.h 8.5 (Berkeley) 5/4/95 williamr@2: * $FreeBSD: src/sys/sys/time.h,v 1.69 2005/04/02 12:33:27 das Exp $ williamr@2: */ williamr@2: williamr@2: #ifndef _SYS_TIME_H_ williamr@2: #define _SYS_TIME_H_ williamr@2: williamr@2: #include williamr@2: #include williamr@2: #include williamr@2: williamr@2: struct timezone { williamr@2: int tz_minuteswest; /* minutes west of Greenwich */ williamr@2: int tz_dsttime; /* type of dst correction */ williamr@2: }; williamr@2: #define DST_NONE 0 /* not on dst */ williamr@2: #define DST_USA 1 /* USA style dst */ williamr@2: #define DST_AUST 2 /* Australian style dst */ williamr@2: #define DST_WET 3 /* Western European dst */ williamr@2: #define DST_MET 4 /* Middle European dst */ williamr@2: #define DST_EET 5 /* Eastern European dst */ williamr@2: #define DST_CAN 6 /* Canada */ williamr@2: williamr@2: #if __BSD_VISIBLE williamr@2: struct bintime { williamr@2: time_t sec; williamr@2: uint64_t frac; williamr@2: }; williamr@2: williamr@2: static __inline void williamr@2: bintime_addx(struct bintime *bt, uint64_t x) williamr@2: { williamr@2: uint64_t u; williamr@2: williamr@2: u = bt->frac; williamr@2: bt->frac += x; williamr@2: if (u > bt->frac) williamr@2: bt->sec++; williamr@2: } williamr@2: williamr@2: static __inline void williamr@2: bintime_add(struct bintime *bt, const struct bintime *bt2) williamr@2: { williamr@2: uint64_t u; williamr@2: williamr@2: u = bt->frac; williamr@2: bt->frac += bt2->frac; williamr@2: if (u > bt->frac) williamr@2: bt->sec++; williamr@2: bt->sec += bt2->sec; williamr@2: } williamr@2: williamr@2: static __inline void williamr@2: bintime_sub(struct bintime *bt, const struct bintime *bt2) williamr@2: { williamr@2: uint64_t u; williamr@2: williamr@2: u = bt->frac; williamr@2: bt->frac -= bt2->frac; williamr@2: if (u < bt->frac) williamr@2: bt->sec--; williamr@2: bt->sec -= bt2->sec; williamr@2: } williamr@2: williamr@2: /*- williamr@2: * Background information: williamr@2: * williamr@2: * When converting between timestamps on parallel timescales of differing williamr@2: * resolutions it is historical and scientific practice to round down rather williamr@2: * than doing 4/5 rounding. williamr@2: * williamr@2: * The date changes at midnight, not at noon. williamr@2: * williamr@2: * Even at 15:59:59.999999999 it's not four'o'clock. williamr@2: * williamr@2: * time_second ticks after N.999999999 not after N.4999999999 williamr@2: */ williamr@2: williamr@2: static __inline void williamr@2: bintime2timespec(const struct bintime *bt, struct timespec *ts) williamr@2: { williamr@2: williamr@2: ts->tv_sec = bt->sec; williamr@2: ts->tv_nsec = ((uint64_t)1000000000 * (uint32_t)(bt->frac >> 32)) >> 32; williamr@2: } williamr@2: williamr@2: static __inline void williamr@2: timespec2bintime(const struct timespec *ts, struct bintime *bt) williamr@2: { williamr@2: williamr@2: bt->sec = ts->tv_sec; williamr@2: /* 18446744073 = int(2^64 / 1000000000) */ williamr@2: bt->frac = ts->tv_nsec * (uint64_t)18446744073LL; williamr@2: } williamr@2: williamr@2: static __inline void williamr@2: bintime2timeval(const struct bintime *bt, struct timeval *tv) williamr@2: { williamr@2: williamr@2: tv->tv_sec = bt->sec; williamr@2: tv->tv_usec = ((uint64_t)1000000 * (uint32_t)(bt->frac >> 32)) >> 32; williamr@2: } williamr@2: williamr@2: static __inline void williamr@2: timeval2bintime(const struct timeval *tv, struct bintime *bt) williamr@2: { williamr@2: williamr@2: bt->sec = tv->tv_sec; williamr@2: /* 18446744073709 = int(2^64 / 1000000) */ williamr@2: bt->frac = tv->tv_usec * (uint64_t)18446744073709LL; williamr@2: } williamr@2: #endif /* __BSD_VISIBLE */ williamr@2: williamr@2: /* williamr@2: * Names of the interval timers, and structure williamr@2: * defining a timer setting. williamr@2: */ williamr@2: #define ITIMER_REAL 0 williamr@2: #define ITIMER_VIRTUAL 1 williamr@2: #define ITIMER_PROF 2 williamr@2: williamr@2: struct itimerval { williamr@2: struct timeval it_interval; /* timer interval */ williamr@2: struct timeval it_value; /* current value */ williamr@2: }; williamr@2: williamr@2: /* williamr@2: * Getkerninfo clock information structure williamr@2: */ williamr@2: struct clockinfo { williamr@2: int hz; /* clock frequency */ williamr@2: int tick; /* micro-seconds per hz tick */ williamr@2: int spare; williamr@2: int stathz; /* statistics clock frequency */ williamr@2: int profhz; /* profiling clock frequency */ williamr@2: }; williamr@2: williamr@2: #include williamr@2: williamr@2: #include williamr@2: williamr@2: __BEGIN_DECLS williamr@2: IMPORT_C int adjtime(const struct timeval *, struct timeval *); williamr@2: IMPORT_C int gettimeofday(struct timeval *, struct timezone *); williamr@2: int settimeofday(const struct timeval *, const struct timezone *); williamr@2: IMPORT_C int utimes(const char *, const struct timeval *); williamr@2: __END_DECLS williamr@2: williamr@2: williamr@2: #endif /* !_SYS_TIME_H_ */