| 1 | /*
|
|---|
| 2 | * Copyright (c) 1982, 1986, 1993
|
|---|
| 3 | * The Regents of the University of California. All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | * 1. Redistributions of source code must retain the above copyright
|
|---|
| 9 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 10 | * 2. Redistributions in binary form must reproduce the above copyright
|
|---|
| 11 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 12 | * documentation and/or other materials provided with the distribution.
|
|---|
| 13 | * 3. All advertising materials mentioning features or use of this software
|
|---|
| 14 | * must display the following acknowledgement:
|
|---|
| 15 | * This product includes software developed by the University of
|
|---|
| 16 | * California, Berkeley and its contributors.
|
|---|
| 17 | * 4. Neither the name of the University nor the names of its contributors
|
|---|
| 18 | * may be used to endorse or promote products derived from this software
|
|---|
| 19 | * without specific prior written permission.
|
|---|
| 20 | *
|
|---|
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|---|
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|---|
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|---|
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|---|
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|---|
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|---|
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|---|
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|---|
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|---|
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|---|
| 31 | * SUCH DAMAGE.
|
|---|
| 32 | *
|
|---|
| 33 | * @(#)time.h 8.5 (Berkeley) 5/4/95
|
|---|
| 34 | * $FreeBSD: src/sys/sys/time.h,v 1.61 2003/02/23 10:18:31 phk Exp $
|
|---|
| 35 | */
|
|---|
| 36 |
|
|---|
| 37 | /** @file
|
|---|
| 38 | * FreeBSD 5.1
|
|---|
| 39 | *
|
|---|
| 40 | * @changed EMX isms
|
|---|
| 41 | * @changed IBM TCP paranoia.
|
|---|
| 42 | * @changed Added hrtime_t and gethrtime from SUN/HP/RTLinux.
|
|---|
| 43 | */
|
|---|
| 44 |
|
|---|
| 45 | #ifndef _SYS_TIME_H_
|
|---|
| 46 | #define _SYS_TIME_H_
|
|---|
| 47 |
|
|---|
| 48 | #include <sys/_timeval.h>
|
|---|
| 49 | #include <sys/types.h>
|
|---|
| 50 | #include <sys/timespec.h>
|
|---|
| 51 |
|
|---|
| 52 | #if !defined (_TIMEZONE) /* bird: EMX */
|
|---|
| 53 | #define _TIMEZONE /* bird: EMX */
|
|---|
| 54 | struct timezone {
|
|---|
| 55 | int tz_minuteswest; /* minutes west of Greenwich */
|
|---|
| 56 | int tz_dsttime; /* type of dst correction */
|
|---|
| 57 | };
|
|---|
| 58 | #endif /* bird: EMX */
|
|---|
| 59 | #define DST_NONE 0 /* not on dst */
|
|---|
| 60 | #define DST_USA 1 /* USA style dst */
|
|---|
| 61 | #define DST_AUST 2 /* Australian style dst */
|
|---|
| 62 | #define DST_WET 3 /* Western European dst */
|
|---|
| 63 | #define DST_MET 4 /* Middle European dst */
|
|---|
| 64 | #define DST_EET 5 /* Eastern European dst */
|
|---|
| 65 | #define DST_CAN 6 /* Canada */
|
|---|
| 66 |
|
|---|
| 67 | #if __BSD_VISIBLE
|
|---|
| 68 | struct bintime {
|
|---|
| 69 | time_t sec;
|
|---|
| 70 | uint64_t frac;
|
|---|
| 71 | };
|
|---|
| 72 |
|
|---|
| 73 | static __inline void
|
|---|
| 74 | bintime_addx(struct bintime *bt, uint64_t x)
|
|---|
| 75 | {
|
|---|
| 76 | uint64_t u;
|
|---|
| 77 |
|
|---|
| 78 | u = bt->frac;
|
|---|
| 79 | bt->frac += x;
|
|---|
| 80 | if (u > bt->frac)
|
|---|
| 81 | bt->sec++;
|
|---|
| 82 | }
|
|---|
| 83 |
|
|---|
| 84 | static __inline void
|
|---|
| 85 | bintime_add(struct bintime *bt, struct bintime *bt2)
|
|---|
| 86 | {
|
|---|
| 87 | uint64_t u;
|
|---|
| 88 |
|
|---|
| 89 | u = bt->frac;
|
|---|
| 90 | bt->frac += bt2->frac;
|
|---|
| 91 | if (u > bt->frac)
|
|---|
| 92 | bt->sec++;
|
|---|
| 93 | bt->sec += bt2->sec;
|
|---|
| 94 | }
|
|---|
| 95 |
|
|---|
| 96 | static __inline void
|
|---|
| 97 | bintime_sub(struct bintime *bt, struct bintime *bt2)
|
|---|
| 98 | {
|
|---|
| 99 | uint64_t u;
|
|---|
| 100 |
|
|---|
| 101 | u = bt->frac;
|
|---|
| 102 | bt->frac -= bt2->frac;
|
|---|
| 103 | if (u < bt->frac)
|
|---|
| 104 | bt->sec--;
|
|---|
| 105 | bt->sec -= bt2->sec;
|
|---|
| 106 | }
|
|---|
| 107 |
|
|---|
| 108 | /*-
|
|---|
| 109 | * Background information:
|
|---|
| 110 | *
|
|---|
| 111 | * When converting between timestamps on parallel timescales of differing
|
|---|
| 112 | * resolutions it is historical and scientific practice to round down rather
|
|---|
| 113 | * than doing 4/5 rounding.
|
|---|
| 114 | *
|
|---|
| 115 | * The date changes at midnight, not at noon.
|
|---|
| 116 | *
|
|---|
| 117 | * Even at 15:59:59.999999999 it's not four'o'clock.
|
|---|
| 118 | *
|
|---|
| 119 | * time_second ticks after N.999999999 not after N.4999999999
|
|---|
| 120 | */
|
|---|
| 121 |
|
|---|
| 122 | static __inline void
|
|---|
| 123 | bintime2timespec(struct bintime *bt, struct timespec *ts)
|
|---|
| 124 | {
|
|---|
| 125 |
|
|---|
| 126 | ts->tv_sec = bt->sec;
|
|---|
| 127 | ts->tv_nsec = ((uint64_t)1000000000 * (uint32_t)(bt->frac >> 32)) >> 32;
|
|---|
| 128 | }
|
|---|
| 129 |
|
|---|
| 130 | static __inline void
|
|---|
| 131 | timespec2bintime(struct timespec *ts, struct bintime *bt)
|
|---|
| 132 | {
|
|---|
| 133 |
|
|---|
| 134 | bt->sec = ts->tv_sec;
|
|---|
| 135 | /* 18446744073 = int(2^64 / 1000000000) */
|
|---|
| 136 | bt->frac = ts->tv_nsec * (uint64_t)18446744073LL;
|
|---|
| 137 | }
|
|---|
| 138 |
|
|---|
| 139 | static __inline void
|
|---|
| 140 | bintime2timeval(struct bintime *bt, struct timeval *tv)
|
|---|
| 141 | {
|
|---|
| 142 |
|
|---|
| 143 | tv->tv_sec = bt->sec;
|
|---|
| 144 | tv->tv_usec = ((uint64_t)1000000 * (uint32_t)(bt->frac >> 32)) >> 32;
|
|---|
| 145 | }
|
|---|
| 146 |
|
|---|
| 147 | static __inline void
|
|---|
| 148 | timeval2bintime(struct timeval *tv, struct bintime *bt)
|
|---|
| 149 | {
|
|---|
| 150 |
|
|---|
| 151 | bt->sec = tv->tv_sec;
|
|---|
| 152 | /* 18446744073709 = int(2^64 / 1000000) */
|
|---|
| 153 | bt->frac = tv->tv_usec * (uint64_t)18446744073709LL;
|
|---|
| 154 | }
|
|---|
| 155 | #endif /* __BSD_VISIBLE */
|
|---|
| 156 |
|
|---|
| 157 | #ifdef _KERNEL
|
|---|
| 158 |
|
|---|
| 159 | /* Operations on timespecs */
|
|---|
| 160 | #define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0)
|
|---|
| 161 | #define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec)
|
|---|
| 162 | #define timespeccmp(tvp, uvp, cmp) \
|
|---|
| 163 | (((tvp)->tv_sec == (uvp)->tv_sec) ? \
|
|---|
| 164 | ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \
|
|---|
| 165 | ((tvp)->tv_sec cmp (uvp)->tv_sec))
|
|---|
| 166 | #define timespecadd(vvp, uvp) \
|
|---|
| 167 | do { \
|
|---|
| 168 | (vvp)->tv_sec += (uvp)->tv_sec; \
|
|---|
| 169 | (vvp)->tv_nsec += (uvp)->tv_nsec; \
|
|---|
| 170 | if ((vvp)->tv_nsec >= 1000000000) { \
|
|---|
| 171 | (vvp)->tv_sec++; \
|
|---|
| 172 | (vvp)->tv_nsec -= 1000000000; \
|
|---|
| 173 | } \
|
|---|
| 174 | } while (0)
|
|---|
| 175 | #define timespecsub(vvp, uvp) \
|
|---|
| 176 | do { \
|
|---|
| 177 | (vvp)->tv_sec -= (uvp)->tv_sec; \
|
|---|
| 178 | (vvp)->tv_nsec -= (uvp)->tv_nsec; \
|
|---|
| 179 | if ((vvp)->tv_nsec < 0) { \
|
|---|
| 180 | (vvp)->tv_sec--; \
|
|---|
| 181 | (vvp)->tv_nsec += 1000000000; \
|
|---|
| 182 | } \
|
|---|
| 183 | } while (0)
|
|---|
| 184 |
|
|---|
| 185 | /* Operations on timevals. */
|
|---|
| 186 |
|
|---|
| 187 | #define timevalclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)
|
|---|
| 188 | #define timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
|
|---|
| 189 | #define timevalcmp(tvp, uvp, cmp) \
|
|---|
| 190 | (((tvp)->tv_sec == (uvp)->tv_sec) ? \
|
|---|
| 191 | ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
|
|---|
| 192 | ((tvp)->tv_sec cmp (uvp)->tv_sec))
|
|---|
| 193 |
|
|---|
| 194 | /* timevaladd and timevalsub are not inlined */
|
|---|
| 195 |
|
|---|
| 196 | #endif /* _KERNEL */
|
|---|
| 197 |
|
|---|
| 198 | #ifndef _KERNEL /* NetBSD/OpenBSD compatible interfaces */
|
|---|
| 199 |
|
|---|
| 200 | #define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)
|
|---|
| 201 | #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
|
|---|
| 202 | #ifndef timercmp /* bird: TCP paranoia */
|
|---|
| 203 | #define timercmp(tvp, uvp, cmp) \
|
|---|
| 204 | (((tvp)->tv_sec == (uvp)->tv_sec) ? \
|
|---|
| 205 | ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
|
|---|
| 206 | ((tvp)->tv_sec cmp (uvp)->tv_sec))
|
|---|
| 207 | #endif /* bird: TCP paranoia */
|
|---|
| 208 | #ifndef timeradd /* bird: TCP paranoia */
|
|---|
| 209 | #define timeradd(tvp, uvp, vvp) \
|
|---|
| 210 | do { \
|
|---|
| 211 | (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
|
|---|
| 212 | (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
|
|---|
| 213 | if ((vvp)->tv_usec >= 1000000) { \
|
|---|
| 214 | (vvp)->tv_sec++; \
|
|---|
| 215 | (vvp)->tv_usec -= 1000000; \
|
|---|
| 216 | } \
|
|---|
| 217 | } while (0)
|
|---|
| 218 | #endif /* bird: TCP paranoia */
|
|---|
| 219 | #ifndef timersub /* bird: TCP paranoia */
|
|---|
| 220 | #define timersub(tvp, uvp, vvp) \
|
|---|
| 221 | do { \
|
|---|
| 222 | (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
|
|---|
| 223 | (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
|
|---|
| 224 | if ((vvp)->tv_usec < 0) { \
|
|---|
| 225 | (vvp)->tv_sec--; \
|
|---|
| 226 | (vvp)->tv_usec += 1000000; \
|
|---|
| 227 | } \
|
|---|
| 228 | } while (0)
|
|---|
| 229 | #endif /* bird: TCP paranoia */
|
|---|
| 230 | #endif
|
|---|
| 231 |
|
|---|
| 232 | /*
|
|---|
| 233 | * Names of the interval timers, and structure
|
|---|
| 234 | * defining a timer setting.
|
|---|
| 235 | */
|
|---|
| 236 | #define ITIMER_REAL 0
|
|---|
| 237 | #define ITIMER_VIRTUAL 1
|
|---|
| 238 | #define ITIMER_PROF 2
|
|---|
| 239 |
|
|---|
| 240 | struct itimerval {
|
|---|
| 241 | struct timeval it_interval; /* timer interval */
|
|---|
| 242 | struct timeval it_value; /* current value */
|
|---|
| 243 | };
|
|---|
| 244 |
|
|---|
| 245 | /*
|
|---|
| 246 | * Getkerninfo clock information structure
|
|---|
| 247 | */
|
|---|
| 248 | struct clockinfo {
|
|---|
| 249 | int hz; /* clock frequency */
|
|---|
| 250 | int tick; /* micro-seconds per hz tick */
|
|---|
| 251 | int spare;
|
|---|
| 252 | int stathz; /* statistics clock frequency */
|
|---|
| 253 | int profhz; /* profiling clock frequency */
|
|---|
| 254 | };
|
|---|
| 255 |
|
|---|
| 256 | /* CLOCK_REALTIME and TIMER_ABSTIME are supposed to be in time.h */
|
|---|
| 257 |
|
|---|
| 258 | #ifndef CLOCK_REALTIME
|
|---|
| 259 | #define CLOCK_REALTIME 0
|
|---|
| 260 | #endif
|
|---|
| 261 | #define CLOCK_VIRTUAL 1
|
|---|
| 262 | #define CLOCK_PROF 2
|
|---|
| 263 | #define CLOCK_MONOTONIC 4
|
|---|
| 264 |
|
|---|
| 265 | #define TIMER_RELTIME 0x0 /* relative timer */
|
|---|
| 266 | #ifndef TIMER_ABSTIME
|
|---|
| 267 | #define TIMER_ABSTIME 0x1 /* absolute timer */
|
|---|
| 268 | #endif
|
|---|
| 269 |
|
|---|
| 270 | #ifdef _KERNEL
|
|---|
| 271 | extern time_t time_second;
|
|---|
| 272 | extern time_t time_uptime;
|
|---|
| 273 |
|
|---|
| 274 | /*
|
|---|
| 275 | * Functions for looking at our clock: [get]{bin,nano,micro}[up]time()
|
|---|
| 276 | *
|
|---|
| 277 | * Functions without the "get" prefix returns the best timestamp
|
|---|
| 278 | * we can produce in the given format.
|
|---|
| 279 | *
|
|---|
| 280 | * "bin" == struct bintime == seconds + 64 bit fraction of seconds.
|
|---|
| 281 | * "nano" == struct timespec == seconds + nanoseconds.
|
|---|
| 282 | * "micro" == struct timeval == seconds + microseconds.
|
|---|
| 283 | *
|
|---|
| 284 | * Functions containing "up" returns time relative to boot and
|
|---|
| 285 | * should be used for calculating time intervals.
|
|---|
| 286 | *
|
|---|
| 287 | * Functions without "up" returns GMT time.
|
|---|
| 288 | *
|
|---|
| 289 | * Functions with the "get" prefix returns a less precise result
|
|---|
| 290 | * much faster than the functions without "get" prefix and should
|
|---|
| 291 | * be used where a precision of 10 msec is acceptable or where
|
|---|
| 292 | * performance is priority. (NB: "precision", _not_ "resolution" !)
|
|---|
| 293 | *
|
|---|
| 294 | */
|
|---|
| 295 |
|
|---|
| 296 | void binuptime(struct bintime *bt);
|
|---|
| 297 | void nanouptime(struct timespec *tsp);
|
|---|
| 298 | void microuptime(struct timeval *tvp);
|
|---|
| 299 |
|
|---|
| 300 | void bintime(struct bintime *bt);
|
|---|
| 301 | void nanotime(struct timespec *tsp);
|
|---|
| 302 | void microtime(struct timeval *tvp);
|
|---|
| 303 |
|
|---|
| 304 | void getbinuptime(struct bintime *bt);
|
|---|
| 305 | void getnanouptime(struct timespec *tsp);
|
|---|
| 306 | void getmicrouptime(struct timeval *tvp);
|
|---|
| 307 |
|
|---|
| 308 | void getbintime(struct bintime *bt);
|
|---|
| 309 | void getnanotime(struct timespec *tsp);
|
|---|
| 310 | void getmicrotime(struct timeval *tvp);
|
|---|
| 311 |
|
|---|
| 312 | /* Other functions */
|
|---|
| 313 | int itimerdecr(struct itimerval *itp, int usec);
|
|---|
| 314 | int itimerfix(struct timeval *tv);
|
|---|
| 315 | int ppsratecheck(struct timeval *, int *, int);
|
|---|
| 316 | int ratecheck(struct timeval *, const struct timeval *);
|
|---|
| 317 | void timevaladd(struct timeval *t1, struct timeval *t2);
|
|---|
| 318 | void timevalsub(struct timeval *t1, struct timeval *t2);
|
|---|
| 319 | int tvtohz(struct timeval *tv);
|
|---|
| 320 | #else /* !_KERNEL */
|
|---|
| 321 | #include <time.h>
|
|---|
| 322 |
|
|---|
| 323 | #include <sys/cdefs.h>
|
|---|
| 324 |
|
|---|
| 325 | __BEGIN_DECLS
|
|---|
| 326 | /** @todo int adjtime(const struct timeval *, struct timeval *); */
|
|---|
| 327 | int futimes(int, const struct timeval *);
|
|---|
| 328 | int getitimer(int, struct itimerval *);
|
|---|
| 329 | int gettimeofday(struct timeval *, struct timezone *);
|
|---|
| 330 | int lutimes(const char *, const struct timeval *);
|
|---|
| 331 | int setitimer(int, const struct itimerval *, struct itimerval *);
|
|---|
| 332 | int settimeofday(const struct timeval *, const struct timezone *);
|
|---|
| 333 | int utimes(const char *, const struct timeval *);
|
|---|
| 334 |
|
|---|
| 335 | /* bird - start: A nice SUN/HP/RTLinux extension. */
|
|---|
| 336 | typedef signed long long hrtime_t;
|
|---|
| 337 | hrtime_t gethrtime(void);
|
|---|
| 338 | #define HRTIME_INFINITY (0x7fffffffffffffffLL)
|
|---|
| 339 | /* bird - end. */
|
|---|
| 340 |
|
|---|
| 341 | __END_DECLS
|
|---|
| 342 |
|
|---|
| 343 | #endif /* !_KERNEL */
|
|---|
| 344 |
|
|---|
| 345 | #endif /* !_SYS_TIME_H_ */
|
|---|
