author | William Roberts <williamr@symbian.org> |
Tue, 16 Mar 2010 16:12:26 +0000 | |
branch | Symbian2 |
changeset 2 | 2fe1408b6811 |
parent 0 | 061f57f2323e |
child 4 | 837f303aceeb |
permissions | -rw-r--r-- |
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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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* 4. 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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* © Portions copyright (c) 2007 Symbian Software Ltd. All rights reserved. |
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* @(#)time.h 8.5 (Berkeley) 5/4/95 |
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* $FreeBSD: src/sys/sys/time.h,v 1.69 2005/04/02 12:33:27 das Exp $ |
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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/_timeval.h> |
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#include <sys/types.h> |
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#include <sys/timespec.h> |
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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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#if __BSD_VISIBLE |
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struct bintime { |
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time_t sec; |
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uint64_t frac; |
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}; |
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static __inline void |
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bintime_addx(struct bintime *bt, uint64_t x) |
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{ |
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uint64_t u; |
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u = bt->frac; |
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bt->frac += x; |
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if (u > bt->frac) |
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bt->sec++; |
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} |
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static __inline void |
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bintime_add(struct bintime *bt, const struct bintime *bt2) |
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{ |
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uint64_t u; |
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u = bt->frac; |
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bt->frac += bt2->frac; |
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if (u > bt->frac) |
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bt->sec++; |
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bt->sec += bt2->sec; |
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} |
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static __inline void |
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bintime_sub(struct bintime *bt, const struct bintime *bt2) |
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{ |
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uint64_t u; |
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u = bt->frac; |
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bt->frac -= bt2->frac; |
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if (u < bt->frac) |
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bt->sec--; |
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bt->sec -= bt2->sec; |
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} |
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/*- |
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* Background information: |
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* |
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* When converting between timestamps on parallel timescales of differing |
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* resolutions it is historical and scientific practice to round down rather |
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* than doing 4/5 rounding. |
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* |
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* The date changes at midnight, not at noon. |
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* |
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* Even at 15:59:59.999999999 it's not four'o'clock. |
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* |
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* time_second ticks after N.999999999 not after N.4999999999 |
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*/ |
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|
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static __inline void |
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bintime2timespec(const struct bintime *bt, struct timespec *ts) |
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{ |
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ts->tv_sec = bt->sec; |
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ts->tv_nsec = ((uint64_t)1000000000 * (uint32_t)(bt->frac >> 32)) >> 32; |
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} |
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static __inline void |
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timespec2bintime(const struct timespec *ts, struct bintime *bt) |
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{ |
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bt->sec = ts->tv_sec; |
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/* 18446744073 = int(2^64 / 1000000000) */ |
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bt->frac = ts->tv_nsec * (uint64_t)18446744073LL; |
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} |
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static __inline void |
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bintime2timeval(const struct bintime *bt, struct timeval *tv) |
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{ |
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tv->tv_sec = bt->sec; |
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tv->tv_usec = ((uint64_t)1000000 * (uint32_t)(bt->frac >> 32)) >> 32; |
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} |
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static __inline void |
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timeval2bintime(const struct timeval *tv, struct bintime *bt) |
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{ |
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bt->sec = tv->tv_sec; |
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/* 18446744073709 = int(2^64 / 1000000) */ |
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bt->frac = tv->tv_usec * (uint64_t)18446744073709LL; |
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} |
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#endif /* __BSD_VISIBLE */ |
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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 spare; |
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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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#include <time.h> |
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#include <sys/cdefs.h> |
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__BEGIN_DECLS |
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IMPORT_C int adjtime(const struct timeval *, struct timeval *); |
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IMPORT_C int gettimeofday(struct timeval *, struct timezone *); |
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int settimeofday(const struct timeval *, const struct timezone *); |
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IMPORT_C int utimes(const char *, const struct timeval *); |
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__END_DECLS |
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#endif /* !_SYS_TIME_H_ */ |