12926Sphk/*- 22926Sphk * SPDX-License-Identifier: BSD-3-Clause 32926Sphk * 493150Sphk * Copyright (c) 1982, 1986, 1993 52926Sphk * The Regents of the University of California. All rights reserved. 62926Sphk * 72926Sphk * Redistribution and use in source and binary forms, with or without 82926Sphk * modification, are permitted provided that the following conditions 950479Speter * are met: 102926Sphk * 1. Redistributions of source code must retain the above copyright 112926Sphk * notice, this list of conditions and the following disclaimer. 122926Sphk * 2. Redistributions in binary form must reproduce the above copyright 132886Sphk * notice, this list of conditions and the following disclaimer in the 142886Sphk * documentation and/or other materials provided with the distribution. 152886Sphk * 3. Neither the name of the University nor the names of its contributors 162886Sphk * may be used to endorse or promote products derived from this software 172886Sphk * without specific prior written permission. 182886Sphk * 192886Sphk * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 202886Sphk * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 212886Sphk * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 222886Sphk * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 232886Sphk * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 242886Sphk * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 252886Sphk * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 262886Sphk * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 272886Sphk * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 282886Sphk * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 292886Sphk * SUCH DAMAGE. 302886Sphk */ 312886Sphk 322886Sphk#ifndef _SYS_TIME_H_ 332886Sphk#define _SYS_TIME_H_ 342886Sphk 352886Sphk#include <sys/_timeval.h> 362886Sphk#include <sys/types.h> 372886Sphk#include <sys/timespec.h> 382886Sphk#include <sys/_clock_id.h> 392886Sphk 402886Sphkstruct timezone { 412886Sphk int tz_minuteswest; /* minutes west of Greenwich */ 422886Sphk int tz_dsttime; /* type of dst correction */ 432886Sphk}; 442886Sphk#define DST_NONE 0 /* not on dst */ 452886Sphk#define DST_USA 1 /* USA style dst */ 462886Sphk#define DST_AUST 2 /* Australian style dst */ 472886Sphk#define DST_WET 3 /* Western European dst */ 482886Sphk#define DST_MET 4 /* Middle European dst */ 492886Sphk#define DST_EET 5 /* Eastern European dst */ 502886Sphk#define DST_CAN 6 /* Canada */ 512886Sphk 522948Sphk#if __BSD_VISIBLE 532948Sphkstruct bintime { 542948Sphk time_t sec; 552948Sphk uint64_t frac; 562886Sphk}; 572886Sphk 582886Sphkstatic __inline void 592948Sphkbintime_addx(struct bintime *_bt, uint64_t _x) 602948Sphk{ 612886Sphk uint64_t _u; 622886Sphk 632886Sphk _u = _bt->frac; 642886Sphk _bt->frac += _x; 652886Sphk if (_u > _bt->frac) 662886Sphk _bt->sec++; 672886Sphk} 682948Sphk 692886Sphkstatic __inline void 702886Sphkbintime_add(struct bintime *_bt, const struct bintime *_bt2) 712886Sphk{ 722948Sphk uint64_t _u; 732886Sphk 742886Sphk _u = _bt->frac; 752886Sphk _bt->frac += _bt2->frac; 762886Sphk if (_u > _bt->frac) 772948Sphk _bt->sec++; 782948Sphk _bt->sec += _bt2->sec; 792948Sphk} 802886Sphk 812886Sphkstatic __inline void 822886Sphkbintime_sub(struct bintime *_bt, const struct bintime *_bt2) 832886Sphk{ 842886Sphk uint64_t _u; 852886Sphk 862886Sphk _u = _bt->frac; 872886Sphk _bt->frac -= _bt2->frac; 882886Sphk if (_u < _bt->frac) 892886Sphk _bt->sec--; 902886Sphk _bt->sec -= _bt2->sec; 912886Sphk} 922886Sphk 932886Sphkstatic __inline void 942886Sphkbintime_mul(struct bintime *_bt, u_int _x) 952886Sphk{ 962886Sphk uint64_t _p1, _p2; 972886Sphk 982886Sphk _p1 = (_bt->frac & 0xffffffffull) * _x; 992886Sphk _p2 = (_bt->frac >> 32) * _x + (_p1 >> 32); 1002886Sphk _bt->sec *= _x; 1012886Sphk _bt->sec += (_p2 >> 32); 10213917Sphk _bt->frac = (_p2 << 32) | (_p1 & 0xffffffffull); 10313917Sphk} 10413917Sphk 10513917Sphkstatic __inline void 10613917Sphkbintime_shift(struct bintime *_bt, int _exp) 10713917Sphk{ 10813917Sphk 10913917Sphk if (_exp > 0) { 11013917Sphk _bt->sec <<= _exp; 11113917Sphk _bt->sec |= _bt->frac >> (64 - _exp); 11213917Sphk _bt->frac <<= _exp; 11313917Sphk } else if (_exp < 0) { 11413917Sphk _bt->frac >>= -_exp; 11513917Sphk _bt->frac |= (uint64_t)_bt->sec << (64 + _exp); 11613917Sphk _bt->sec >>= -_exp; 11713917Sphk } 11813917Sphk} 11913917Sphk 12013917Sphk#define bintime_clear(a) ((a)->sec = (a)->frac = 0) 12113917Sphk#define bintime_isset(a) ((a)->sec || (a)->frac) 12213917Sphk#define bintime_cmp(a, b, cmp) \ 12313917Sphk (((a)->sec == (b)->sec) ? \ 12413917Sphk ((a)->frac cmp (b)->frac) : \ 12513917Sphk ((a)->sec cmp (b)->sec)) 12613917Sphk 12713917Sphk#define SBT_1S ((sbintime_t)1 << 32) 12813917Sphk#define SBT_1M (SBT_1S * 60) 12913917Sphk#define SBT_1MS (SBT_1S / 1000) 13013917Sphk#define SBT_1US (SBT_1S / 1000000) 13113917Sphk#define SBT_1NS (SBT_1S / 1000000000) /* beware rounding, see nstosbt() */ 13213917Sphk#define SBT_MAX 0x7fffffffffffffffLL 13313917Sphk 13413917Sphkstatic __inline int 135sbintime_getsec(sbintime_t _sbt) 136{ 137 138 return (_sbt >> 32); 139} 140 141static __inline sbintime_t 142bttosbt(const struct bintime _bt) 143{ 144 145 return (((sbintime_t)_bt.sec << 32) + (_bt.frac >> 32)); 146} 147 148static __inline struct bintime 149sbttobt(sbintime_t _sbt) 150{ 151 struct bintime _bt; 152 153 _bt.sec = _sbt >> 32; 154 _bt.frac = _sbt << 32; 155 return (_bt); 156} 157 158/* 159 * Scaling functions for signed and unsigned 64-bit time using any 160 * 32-bit fraction: 161 */ 162 163static __inline int64_t 164__stime64_scale32_ceil(int64_t x, int32_t factor, int32_t divisor) 165{ 166 const int64_t rem = x % divisor; 167 168 return (x / divisor * factor + (rem * factor + divisor - 1) / divisor); 169} 170 171static __inline int64_t 172__stime64_scale32_floor(int64_t x, int32_t factor, int32_t divisor) 173{ 174 const int64_t rem = x % divisor; 175 176 return (x / divisor * factor + (rem * factor) / divisor); 177} 178 179static __inline uint64_t 180__utime64_scale32_ceil(uint64_t x, uint32_t factor, uint32_t divisor) 181{ 182 const uint64_t rem = x % divisor; 183 184 return (x / divisor * factor + (rem * factor + divisor - 1) / divisor); 185} 186 187static __inline uint64_t 188__utime64_scale32_floor(uint64_t x, uint32_t factor, uint32_t divisor) 189{ 190 const uint64_t rem = x % divisor; 191 192 return (x / divisor * factor + (rem * factor) / divisor); 193} 194 195/* 196 * This function finds the common divisor between the two arguments, 197 * in powers of two. Use a macro, so the compiler will output a 198 * warning if the value overflows! 199 * 200 * Detailed description: 201 * 202 * Create a variable with 1's at the positions of the leading 0's 203 * starting at the least significant bit, producing 0 if none (e.g., 204 * 01011000 -> 0000 0111). Then these two variables are bitwise AND'ed 205 * together, to produce the greatest common power of two minus one. In 206 * the end add one to flip the value to the actual power of two (e.g., 207 * 0000 0111 + 1 -> 0000 1000). 208 */ 209#define __common_powers_of_two(a, b) \ 210 ((~(a) & ((a) - 1) & ~(b) & ((b) - 1)) + 1) 211 212/* 213 * Scaling functions for signed and unsigned 64-bit time assuming 214 * reducable 64-bit fractions to 32-bit fractions: 215 */ 216 217static __inline int64_t 218__stime64_scale64_ceil(int64_t x, int64_t factor, int64_t divisor) 219{ 220 const int64_t gcd = __common_powers_of_two(factor, divisor); 221 222 return (__stime64_scale32_ceil(x, factor / gcd, divisor / gcd)); 223} 224 225static __inline int64_t 226__stime64_scale64_floor(int64_t x, int64_t factor, int64_t divisor) 227{ 228 const int64_t gcd = __common_powers_of_two(factor, divisor); 229 230 return (__stime64_scale32_floor(x, factor / gcd, divisor / gcd)); 231} 232 233static __inline uint64_t 234__utime64_scale64_ceil(uint64_t x, uint64_t factor, uint64_t divisor) 235{ 236 const uint64_t gcd = __common_powers_of_two(factor, divisor); 237 238 return (__utime64_scale32_ceil(x, factor / gcd, divisor / gcd)); 239} 240 241static __inline uint64_t 242__utime64_scale64_floor(uint64_t x, uint64_t factor, uint64_t divisor) 243{ 244 const uint64_t gcd = __common_powers_of_two(factor, divisor); 245 246 return (__utime64_scale32_floor(x, factor / gcd, divisor / gcd)); 247} 248 249/* 250 * Decimal<->sbt conversions. Multiplying or dividing by SBT_1NS 251 * results in large roundoff errors which sbttons() and nstosbt() 252 * avoid. Millisecond and microsecond functions are also provided for 253 * completeness. 254 * 255 * When converting from sbt to another unit, the result is always 256 * rounded down. When converting back to sbt the result is always 257 * rounded up. This gives the property that sbttoX(Xtosbt(y)) == y . 258 * 259 * The conversion functions can also handle negative values. 260 */ 261#define SBT_DECLARE_CONVERSION_PAIR(name, units_per_second) \ 262static __inline int64_t \ 263sbtto##name(sbintime_t sbt) \ 264{ \ 265 return (__stime64_scale64_floor(sbt, units_per_second, SBT_1S)); \ 266} \ 267static __inline sbintime_t \ 268name##tosbt(int64_t name) \ 269{ \ 270 return (__stime64_scale64_ceil(name, SBT_1S, units_per_second)); \ 271} 272 273SBT_DECLARE_CONVERSION_PAIR(ns, 1000000000) 274SBT_DECLARE_CONVERSION_PAIR(us, 1000000) 275SBT_DECLARE_CONVERSION_PAIR(ms, 1000) 276 277/*- 278 * Background information: 279 * 280 * When converting between timestamps on parallel timescales of differing 281 * resolutions it is historical and scientific practice to round down rather 282 * than doing 4/5 rounding. 283 * 284 * The date changes at midnight, not at noon. 285 * 286 * Even at 15:59:59.999999999 it's not four'o'clock. 287 * 288 * time_second ticks after N.999999999 not after N.4999999999 289 */ 290 291static __inline void 292bintime2timespec(const struct bintime *_bt, struct timespec *_ts) 293{ 294 295 _ts->tv_sec = _bt->sec; 296 _ts->tv_nsec = __utime64_scale64_floor( 297 _bt->frac, 1000000000, 1ULL << 32) >> 32; 298} 299 300static __inline uint64_t 301bintime2ns(const struct bintime *_bt) 302{ 303 uint64_t ret; 304 305 ret = (uint64_t)(_bt->sec) * (uint64_t)1000000000; 306 ret += __utime64_scale64_floor( 307 _bt->frac, 1000000000, 1ULL << 32) >> 32; 308 return (ret); 309} 310 311static __inline void 312timespec2bintime(const struct timespec *_ts, struct bintime *_bt) 313{ 314 315 _bt->sec = _ts->tv_sec; 316 _bt->frac = __utime64_scale64_floor( 317 (uint64_t)_ts->tv_nsec << 32, 1ULL << 32, 1000000000); 318} 319 320static __inline void 321bintime2timeval(const struct bintime *_bt, struct timeval *_tv) 322{ 323 324 _tv->tv_sec = _bt->sec; 325 _tv->tv_usec = __utime64_scale64_floor( 326 _bt->frac, 1000000, 1ULL << 32) >> 32; 327} 328 329static __inline void 330timeval2bintime(const struct timeval *_tv, struct bintime *_bt) 331{ 332 333 _bt->sec = _tv->tv_sec; 334 _bt->frac = __utime64_scale64_floor( 335 (uint64_t)_tv->tv_usec << 32, 1ULL << 32, 1000000); 336} 337 338static __inline struct timespec 339sbttots(sbintime_t _sbt) 340{ 341 struct timespec _ts; 342 343 _ts.tv_sec = _sbt >> 32; 344 _ts.tv_nsec = sbttons((uint32_t)_sbt); 345 return (_ts); 346} 347 348static __inline sbintime_t 349tstosbt(struct timespec _ts) 350{ 351 352 return (((sbintime_t)_ts.tv_sec << 32) + nstosbt(_ts.tv_nsec)); 353} 354 355static __inline struct timeval 356sbttotv(sbintime_t _sbt) 357{ 358 struct timeval _tv; 359 360 _tv.tv_sec = _sbt >> 32; 361 _tv.tv_usec = sbttous((uint32_t)_sbt); 362 return (_tv); 363} 364 365static __inline sbintime_t 366tvtosbt(struct timeval _tv) 367{ 368 369 return (((sbintime_t)_tv.tv_sec << 32) + ustosbt(_tv.tv_usec)); 370} 371#endif /* __BSD_VISIBLE */ 372 373#ifdef _KERNEL 374/* 375 * Simple macros to convert ticks to milliseconds 376 * or microseconds and vice-versa. The answer 377 * will always be at least 1. Note the return 378 * value is a uint32_t however we step up the 379 * operations to 64 bit to avoid any overflow/underflow 380 * problems. 381 */ 382#define TICKS_2_MSEC(t) max(1, (uint32_t)(hz == 1000) ? \ 383 (t) : (((uint64_t)(t) * (uint64_t)1000)/(uint64_t)hz)) 384#define TICKS_2_USEC(t) max(1, (uint32_t)(hz == 1000) ? \ 385 ((t) * 1000) : (((uint64_t)(t) * (uint64_t)1000000)/(uint64_t)hz)) 386#define MSEC_2_TICKS(m) max(1, (uint32_t)((hz == 1000) ? \ 387 (m) : ((uint64_t)(m) * (uint64_t)hz)/(uint64_t)1000)) 388#define USEC_2_TICKS(u) max(1, (uint32_t)((hz == 1000) ? \ 389 ((u) / 1000) : ((uint64_t)(u) * (uint64_t)hz)/(uint64_t)1000000)) 390 391#endif 392/* Operations on timespecs */ 393#define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) 394#define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) 395#define timespeccmp(tvp, uvp, cmp) \ 396 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 397 ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \ 398 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 399 400#define timespecadd(tsp, usp, vsp) \ 401 do { \ 402 (vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec; \ 403 (vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec; \ 404 if ((vsp)->tv_nsec >= 1000000000L) { \ 405 (vsp)->tv_sec++; \ 406 (vsp)->tv_nsec -= 1000000000L; \ 407 } \ 408 } while (0) 409#define timespecsub(tsp, usp, vsp) \ 410 do { \ 411 (vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec; \ 412 (vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec; \ 413 if ((vsp)->tv_nsec < 0) { \ 414 (vsp)->tv_sec--; \ 415 (vsp)->tv_nsec += 1000000000L; \ 416 } \ 417 } while (0) 418#define timespecvalid_interval(tsp) ((tsp)->tv_sec >= 0 && \ 419 (tsp)->tv_nsec >= 0 && (tsp)->tv_nsec < 1000000000L) 420 421#ifdef _KERNEL 422 423/* Operations on timevals. */ 424 425#define timevalclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) 426#define timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 427#define timevalcmp(tvp, uvp, cmp) \ 428 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 429 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 430 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 431 432/* timevaladd and timevalsub are not inlined */ 433 434#endif /* _KERNEL */ 435 436#ifndef _KERNEL /* NetBSD/OpenBSD compatible interfaces */ 437 438#define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) 439#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 440#define timercmp(tvp, uvp, cmp) \ 441 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 442 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 443 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 444#define timeradd(tvp, uvp, vvp) \ 445 do { \ 446 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 447 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 448 if ((vvp)->tv_usec >= 1000000) { \ 449 (vvp)->tv_sec++; \ 450 (vvp)->tv_usec -= 1000000; \ 451 } \ 452 } while (0) 453#define timersub(tvp, uvp, vvp) \ 454 do { \ 455 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 456 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 457 if ((vvp)->tv_usec < 0) { \ 458 (vvp)->tv_sec--; \ 459 (vvp)->tv_usec += 1000000; \ 460 } \ 461 } while (0) 462#endif 463 464/* 465 * Names of the interval timers, and structure 466 * defining a timer setting. 467 */ 468#define ITIMER_REAL 0 469#define ITIMER_VIRTUAL 1 470#define ITIMER_PROF 2 471 472struct itimerval { 473 struct timeval it_interval; /* timer interval */ 474 struct timeval it_value; /* current value */ 475}; 476 477/* 478 * Getkerninfo clock information structure 479 */ 480struct clockinfo { 481 int hz; /* clock frequency */ 482 int tick; /* micro-seconds per hz tick */ 483 int spare; 484 int stathz; /* statistics clock frequency */ 485 int profhz; /* profiling clock frequency */ 486}; 487 488#if __BSD_VISIBLE 489#define CPUCLOCK_WHICH_PID 0 490#define CPUCLOCK_WHICH_TID 1 491#endif 492 493#if defined(_KERNEL) || defined(_STANDALONE) 494 495/* 496 * Kernel to clock driver interface. 497 */ 498void inittodr(time_t base); 499void resettodr(void); 500 501extern volatile time_t time_second; 502extern volatile time_t time_uptime; 503extern struct bintime tc_tick_bt; 504extern sbintime_t tc_tick_sbt; 505extern time_t tick_seconds_max; 506extern struct bintime tick_bt; 507extern sbintime_t tick_sbt; 508extern int tc_precexp; 509extern int tc_timepercentage; 510extern struct bintime bt_timethreshold; 511extern struct bintime bt_tickthreshold; 512extern sbintime_t sbt_timethreshold; 513extern sbintime_t sbt_tickthreshold; 514 515extern volatile int rtc_generation; 516 517/* 518 * Functions for looking at our clock: [get]{bin,nano,micro}[up]time() 519 * 520 * Functions without the "get" prefix returns the best timestamp 521 * we can produce in the given format. 522 * 523 * "bin" == struct bintime == seconds + 64 bit fraction of seconds. 524 * "nano" == struct timespec == seconds + nanoseconds. 525 * "micro" == struct timeval == seconds + microseconds. 526 * 527 * Functions containing "up" returns time relative to boot and 528 * should be used for calculating time intervals. 529 * 530 * Functions without "up" returns UTC time. 531 * 532 * Functions with the "get" prefix returns a less precise result 533 * much faster than the functions without "get" prefix and should 534 * be used where a precision of 1/hz seconds is acceptable or where 535 * performance is priority. (NB: "precision", _not_ "resolution" !) 536 */ 537 538void binuptime(struct bintime *bt); 539void nanouptime(struct timespec *tsp); 540void microuptime(struct timeval *tvp); 541 542static __inline sbintime_t 543sbinuptime(void) 544{ 545 struct bintime _bt; 546 547 binuptime(&_bt); 548 return (bttosbt(_bt)); 549} 550 551void bintime(struct bintime *bt); 552void nanotime(struct timespec *tsp); 553void microtime(struct timeval *tvp); 554 555void getbinuptime(struct bintime *bt); 556void getnanouptime(struct timespec *tsp); 557void getmicrouptime(struct timeval *tvp); 558 559static __inline sbintime_t 560getsbinuptime(void) 561{ 562 struct bintime _bt; 563 564 getbinuptime(&_bt); 565 return (bttosbt(_bt)); 566} 567 568void getbintime(struct bintime *bt); 569void getnanotime(struct timespec *tsp); 570void getmicrotime(struct timeval *tvp); 571 572void getboottime(struct timeval *boottime); 573void getboottimebin(struct bintime *boottimebin); 574 575/* Other functions */ 576int itimerdecr(struct itimerval *itp, int usec); 577int itimerfix(struct timeval *tv); 578int eventratecheck(struct timeval *, int *, int); 579#define ppsratecheck(t, c, m) eventratecheck(t, c, m) 580int ratecheck(struct timeval *, const struct timeval *); 581void timevaladd(struct timeval *t1, const struct timeval *t2); 582void timevalsub(struct timeval *t1, const struct timeval *t2); 583int tvtohz(struct timeval *tv); 584 585/* 586 * The following HZ limits allow the tvtohz() function 587 * to only use integer computations. 588 */ 589#define HZ_MAXIMUM (INT_MAX / (1000000 >> 6)) /* 137kHz */ 590#define HZ_MINIMUM 8 /* hz */ 591 592#define TC_DEFAULTPERC 5 593 594#define BT2FREQ(bt) \ 595 (((uint64_t)0x8000000000000000 + ((bt)->frac >> 2)) / \ 596 ((bt)->frac >> 1)) 597 598#define SBT2FREQ(sbt) ((SBT_1S + ((sbt) >> 1)) / (sbt)) 599 600#define FREQ2BT(freq, bt) \ 601{ \ 602 (bt)->sec = 0; \ 603 (bt)->frac = ((uint64_t)0x8000000000000000 / (freq)) << 1; \ 604} 605 606#define TIMESEL(sbt, sbt2) \ 607 (((sbt2) >= sbt_timethreshold) ? \ 608 ((*(sbt) = getsbinuptime()), 1) : ((*(sbt) = sbinuptime()), 0)) 609 610#else /* !_KERNEL && !_STANDALONE */ 611#include <time.h> 612 613#include <sys/cdefs.h> 614#include <sys/select.h> 615 616__BEGIN_DECLS 617int setitimer(int, const struct itimerval *, struct itimerval *); 618int utimes(const char *, const struct timeval *); 619 620#if __BSD_VISIBLE 621int adjtime(const struct timeval *, struct timeval *); 622int clock_getcpuclockid2(id_t, int, clockid_t *); 623int futimes(int, const struct timeval *); 624int futimesat(int, const char *, const struct timeval [2]); 625int lutimes(const char *, const struct timeval *); 626int settimeofday(const struct timeval *, const struct timezone *); 627#endif 628 629#if __XSI_VISIBLE 630int getitimer(int, struct itimerval *); 631int gettimeofday(struct timeval *, struct timezone *); 632#endif 633 634__END_DECLS 635 636#endif /* !_KERNEL */ 637 638#endif /* !_SYS_TIME_H_ */ 639