diff options
Diffstat (limited to 'rtemsbsd/include/rtems/bsd/sys/time.h')
| -rw-r--r-- | rtemsbsd/include/rtems/bsd/sys/time.h | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/rtemsbsd/include/rtems/bsd/sys/time.h b/rtemsbsd/include/rtems/bsd/sys/time.h new file mode 100644 index 00000000..f34af077 --- /dev/null +++ b/rtemsbsd/include/rtems/bsd/sys/time.h @@ -0,0 +1,351 @@ +/*- + * 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. + * 4. 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 8.5 (Berkeley) 5/4/95 + * $FreeBSD$ + */ + +#ifndef _SYS_TIME_HH_ +#define _SYS_TIME_HH_ + +#include <freebsd/sys/_timeval.h> +#include <freebsd/sys/types.h> +#include <freebsd/sys/timespec.h> + +#ifndef __rtems__ +struct timezone { + int tz_minuteswest; /* minutes west of Greenwich */ + int tz_dsttime; /* type of dst correction */ +}; +#endif + +#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 */ + +#if __BSD_VISIBLE +struct bintime { + time_t sec; + uint64_t frac; +}; + +static __inline void +bintime_addx(struct bintime *bt, uint64_t x) +{ + uint64_t u; + + u = bt->frac; + bt->frac += x; + if (u > bt->frac) + bt->sec++; +} + +static __inline void +bintime_add(struct bintime *bt, const struct bintime *bt2) +{ + uint64_t u; + + u = bt->frac; + bt->frac += bt2->frac; + if (u > bt->frac) + bt->sec++; + bt->sec += bt2->sec; +} + +static __inline void +bintime_sub(struct bintime *bt, const struct bintime *bt2) +{ + uint64_t u; + + u = bt->frac; + bt->frac -= bt2->frac; + if (u < bt->frac) + bt->sec--; + bt->sec -= bt2->sec; +} + +/*- + * Background information: + * + * When converting between timestamps on parallel timescales of differing + * resolutions it is historical and scientific practice to round down rather + * than doing 4/5 rounding. + * + * The date changes at midnight, not at noon. + * + * Even at 15:59:59.999999999 it's not four'o'clock. + * + * time_second ticks after N.999999999 not after N.4999999999 + */ + +static __inline void +bintime2timespec(const struct bintime *bt, struct timespec *ts) +{ + + ts->tv_sec = bt->sec; + ts->tv_nsec = ((uint64_t)1000000000 * (uint32_t)(bt->frac >> 32)) >> 32; +} + +static __inline void +timespec2bintime(const struct timespec *ts, struct bintime *bt) +{ + + bt->sec = ts->tv_sec; + /* 18446744073 = int(2^64 / 1000000000) */ + bt->frac = ts->tv_nsec * (uint64_t)18446744073LL; +} + +static __inline void +bintime2timeval(const struct bintime *bt, struct timeval *tv) +{ + + tv->tv_sec = bt->sec; + tv->tv_usec = ((uint64_t)1000000 * (uint32_t)(bt->frac >> 32)) >> 32; +} + +static __inline void +timeval2bintime(const struct timeval *tv, struct bintime *bt) +{ + + bt->sec = tv->tv_sec; + /* 18446744073709 = int(2^64 / 1000000) */ + bt->frac = tv->tv_usec * (uint64_t)18446744073709LL; +} +#endif /* __BSD_VISIBLE */ + +#ifdef _KERNEL + +/* Operations on timespecs */ +#define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) +#define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) +#define timespeccmp(tvp, uvp, cmp) \ + (((tvp)->tv_sec == (uvp)->tv_sec) ? \ + ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \ + ((tvp)->tv_sec cmp (uvp)->tv_sec)) +#define timespecadd(vvp, uvp) \ + do { \ + (vvp)->tv_sec += (uvp)->tv_sec; \ + (vvp)->tv_nsec += (uvp)->tv_nsec; \ + if ((vvp)->tv_nsec >= 1000000000) { \ + (vvp)->tv_sec++; \ + (vvp)->tv_nsec -= 1000000000; \ + } \ + } while (0) +#define timespecsub(vvp, uvp) \ + do { \ + (vvp)->tv_sec -= (uvp)->tv_sec; \ + (vvp)->tv_nsec -= (uvp)->tv_nsec; \ + if ((vvp)->tv_nsec < 0) { \ + (vvp)->tv_sec--; \ + (vvp)->tv_nsec += 1000000000; \ + } \ + } while (0) + +/* Operations on timevals. */ + +#define timevalclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) +#define timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) +#define timevalcmp(tvp, uvp, cmp) \ + (((tvp)->tv_sec == (uvp)->tv_sec) ? \ + ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ + ((tvp)->tv_sec cmp (uvp)->tv_sec)) + +/* timevaladd and timevalsub are not inlined */ + +#endif /* _KERNEL */ + +#ifndef _KERNEL /* NetBSD/OpenBSD compatible interfaces */ + +#define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) +#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) +#ifndef __rtems__ +#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) +#endif +#endif + +/* + * Names of the interval timers, and structure + * defining a timer setting. + */ +#define ITIMER_REAL 0 +#define ITIMER_VIRTUAL 1 +#define ITIMER_PROF 2 + +#ifndef __rtems__ +struct itimerval { + struct timeval it_interval; /* timer interval */ + struct timeval it_value; /* current value */ +}; +#endif + +/* + * Getkerninfo clock information structure + */ +struct clockinfo { + int hz; /* clock frequency */ + int tick; /* micro-seconds per hz tick */ + int spare; + int stathz; /* statistics clock frequency */ + int profhz; /* profiling clock frequency */ +}; + +/* These macros are also in time.h. */ +#ifndef CLOCK_REALTIME +#define CLOCK_REALTIME 0 +#define CLOCK_VIRTUAL 1 +#define CLOCK_PROF 2 +#define CLOCK_MONOTONIC 4 +#define CLOCK_UPTIME 5 /* FreeBSD-specific. */ +#define CLOCK_UPTIME_PRECISE 7 /* FreeBSD-specific. */ +#define CLOCK_UPTIME_FAST 8 /* FreeBSD-specific. */ +#define CLOCK_REALTIME_PRECISE 9 /* FreeBSD-specific. */ +#define CLOCK_REALTIME_FAST 10 /* FreeBSD-specific. */ +#define CLOCK_MONOTONIC_PRECISE 11 /* FreeBSD-specific. */ +#define CLOCK_MONOTONIC_FAST 12 /* FreeBSD-specific. */ +#define CLOCK_SECOND 13 /* FreeBSD-specific. */ +#define CLOCK_THREAD_CPUTIME_ID 14 +#endif + +#ifndef TIMER_ABSTIME +#define TIMER_RELTIME 0x0 /* relative timer */ +#define TIMER_ABSTIME 0x1 /* absolute timer */ +#endif + +#ifdef _KERNEL + +/* + * Kernel to clock driver interface. + */ +void inittodr(time_t base); +void resettodr(void); + +extern time_t time_second; +extern time_t time_uptime; +extern struct timeval boottime; + +/* + * Functions for looking at our clock: [get]{bin,nano,micro}[up]time() + * + * Functions without the "get" prefix returns the best timestamp + * we can produce in the given format. + * + * "bin" == struct bintime == seconds + 64 bit fraction of seconds. + * "nano" == struct timespec == seconds + nanoseconds. + * "micro" == struct timeval == seconds + microseconds. + * + * Functions containing "up" returns time relative to boot and + * should be used for calculating time intervals. + * + * Functions without "up" returns GMT time. + * + * Functions with the "get" prefix returns a less precise result + * much faster than the functions without "get" prefix and should + * be used where a precision of 10 msec is acceptable or where + * performance is priority. (NB: "precision", _not_ "resolution" !) + * + */ + +void binuptime(struct bintime *bt); +void nanouptime(struct timespec *tsp); +void microuptime(struct timeval *tvp); + +void bintime(struct bintime *bt); +void nanotime(struct timespec *tsp); +void microtime(struct timeval *tvp); + +void getbinuptime(struct bintime *bt); +void getnanouptime(struct timespec *tsp); +void getmicrouptime(struct timeval *tvp); + +void getbintime(struct bintime *bt); +void getnanotime(struct timespec *tsp); +void getmicrotime(struct timeval *tvp); + +/* Other functions */ +int itimerdecr(struct itimerval *itp, int usec); +int itimerfix(struct timeval *tv); +int ppsratecheck(struct timeval *, int *, int); +int ratecheck(struct timeval *, const struct timeval *); +void timevaladd(struct timeval *t1, const struct timeval *t2); +void timevalsub(struct timeval *t1, const struct timeval *t2); +int tvtohz(struct timeval *tv); +#else /* !_KERNEL */ +#include <freebsd/time.h> + +#include <freebsd/sys/cdefs.h> +#include <freebsd/sys/select.h> + +__BEGIN_DECLS +int setitimer(int, const struct itimerval *, struct itimerval *); +int utimes(const char *, const struct timeval *); + +#if __BSD_VISIBLE +int adjtime(const struct timeval *, struct timeval *); +int futimes(int, const struct timeval *); +int futimesat(int, const char *, const struct timeval [2]); +int lutimes(const char *, const struct timeval *); +int settimeofday(const struct timeval *, const struct timezone *); +#endif + +#ifndef __rtems__ +#if __XSI_VISIBLE +int getitimer(int, struct itimerval *); +int gettimeofday(struct timeval *, struct timezone *); +#endif +#endif + +__END_DECLS + +#endif /* !_KERNEL */ + +#endif /* !_SYS_TIME_HH_ */ |