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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)time.h 8.5 (Berkeley) 5/4/95 30 * $FreeBSD: src/sys/sys/time.h,v 1.42 1999/12/29 04:24:48 peter Exp $ 31 */ 32 33 #ifndef _SYS_TIME_H_ 34 #define _SYS_TIME_H_ 35 36 #ifdef _KERNEL 37 #include <sys/types.h> 38 #include <machine/clock.h> 39 #else 40 #include <machine/stdint.h> 41 #endif 42 43 #include <sys/_timespec.h> 44 #include <sys/_timeval.h> 45 #include <sys/select.h> 46 47 #define TIMEVAL_TO_TIMESPEC(tv, ts) \ 48 do { \ 49 (ts)->tv_sec = (tv)->tv_sec; \ 50 (ts)->tv_nsec = (tv)->tv_usec * 1000; \ 51 } while (0) 52 #define TIMESPEC_TO_TIMEVAL(tv, ts) \ 53 do { \ 54 (tv)->tv_sec = (ts)->tv_sec; \ 55 (tv)->tv_usec = (ts)->tv_nsec / 1000; \ 56 } while (0) 57 58 struct timezone { 59 int tz_minuteswest; /* minutes west of Greenwich */ 60 int tz_dsttime; /* type of dst correction */ 61 }; 62 #define DST_NONE 0 /* not on dst */ 63 #define DST_USA 1 /* USA style dst */ 64 #define DST_AUST 2 /* Australian style dst */ 65 #define DST_WET 3 /* Western European dst */ 66 #define DST_MET 4 /* Middle European dst */ 67 #define DST_EET 5 /* Eastern European dst */ 68 #define DST_CAN 6 /* Canada */ 69 70 /* Operations on timespecs */ 71 #define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) 72 #define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) 73 #define timespeccmp(tvp, uvp, cmp) \ 74 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 75 ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \ 76 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 77 #define timespecadd(tsp, usp, vsp) \ 78 do { \ 79 (vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec; \ 80 (vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec; \ 81 if ((vsp)->tv_nsec >= 1000000000L) { \ 82 (vsp)->tv_sec++; \ 83 (vsp)->tv_nsec -= 1000000000L; \ 84 } \ 85 } while (0) 86 #define timespecsub(tsp, usp, vsp) \ 87 do { \ 88 (vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec; \ 89 (vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec; \ 90 if ((vsp)->tv_nsec < 0) { \ 91 (vsp)->tv_sec--; \ 92 (vsp)->tv_nsec += 1000000000L; \ 93 } \ 94 } while (0) 95 96 /* Operations on timevals. */ 97 98 #define timevalclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) 99 #define timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 100 #define timevalcmp(tvp, uvp, cmp) \ 101 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 102 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 103 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 104 105 /* timevaladd and timevalsub are not inlined */ 106 107 #ifndef _KERNEL /* NetBSD/OpenBSD compatible interfaces */ 108 109 #define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) 110 #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 111 #define timercmp(tvp, uvp, cmp) \ 112 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 113 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 114 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 115 #define timeradd(tvp, uvp, vvp) \ 116 do { \ 117 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 118 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 119 if ((vvp)->tv_usec >= 1000000) { \ 120 (vvp)->tv_sec++; \ 121 (vvp)->tv_usec -= 1000000; \ 122 } \ 123 } while (0) 124 #define timersub(tvp, uvp, vvp) \ 125 do { \ 126 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 127 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 128 if ((vvp)->tv_usec < 0) { \ 129 (vvp)->tv_sec--; \ 130 (vvp)->tv_usec += 1000000; \ 131 } \ 132 } while (0) 133 #endif 134 135 /* 136 * Names of the interval timers, and structure 137 * defining a timer setting. 138 */ 139 #define ITIMER_REAL 0 140 #define ITIMER_VIRTUAL 1 141 #define ITIMER_PROF 2 142 143 struct itimerval { 144 struct timeval it_interval; /* timer interval */ 145 struct timeval it_value; /* current value */ 146 }; 147 148 /* 149 * Getkerninfo clock information structure 150 */ 151 struct clockinfo { 152 int hz; /* clock frequency */ 153 int tick; /* micro-seconds per hz tick */ 154 int tickadj; /* clock skew rate for adjtime() */ 155 int stathz; /* statistics clock frequency */ 156 int profhz; /* profiling clock frequency */ 157 }; 158 159 /* CLOCK_REALTIME and TIMER_ABSTIME are supposed to be in time.h */ 160 161 #ifndef CLOCK_REALTIME 162 #define CLOCK_REALTIME 0 163 #endif 164 #define CLOCK_VIRTUAL 1 165 #define CLOCK_PROF 2 166 #define CLOCK_MONOTONIC 4 167 168 #define CLOCK_UPTIME 5 /* from freebsd */ 169 #define CLOCK_UPTIME_PRECISE 7 /* from freebsd */ 170 #define CLOCK_UPTIME_FAST 8 /* from freebsd */ 171 #define CLOCK_REALTIME_PRECISE 9 /* from freebsd */ 172 #define CLOCK_REALTIME_FAST 10 /* from freebsd */ 173 #define CLOCK_MONOTONIC_PRECISE 11 /* from freebsd */ 174 #define CLOCK_MONOTONIC_FAST 12 /* from freebsd */ 175 #define CLOCK_SECOND 13 /* from freebsd */ 176 #define CLOCK_THREAD_CPUTIME_ID 14 177 #define CLOCK_PROCESS_CPUTIME_ID 15 178 179 #define TIMER_RELTIME 0x0 /* relative timer */ 180 #ifndef TIMER_ABSTIME 181 #define TIMER_ABSTIME 0x1 /* absolute timer */ 182 #endif 183 184 #ifdef _KERNEL 185 186 extern time_t time_second; /* simple time_t (can step) */ 187 extern time_t time_uptime; /* monotonic simple uptime / seconds */ 188 extern int64_t ntp_tick_permanent; 189 extern int64_t ntp_tick_acc; 190 extern int64_t ntp_delta; 191 extern int64_t ntp_big_delta; 192 extern int32_t ntp_tick_delta; 193 extern int32_t ntp_default_tick_delta; 194 extern time_t ntp_leap_second; 195 extern int ntp_leap_insert; 196 197 void initclocks_pcpu(void); 198 void getmicrouptime(struct timeval *tv); 199 void getmicrotime(struct timeval *tv); 200 void getnanouptime(struct timespec *tv); 201 void getnanotime(struct timespec *tv); 202 int itimerdecr(struct itimerval *itp, int usec); 203 int itimerfix(struct timeval *tv); 204 int itimespecfix(struct timespec *ts); 205 int ppsratecheck(struct timeval *, int *, int usec); 206 int ratecheck(struct timeval *, const struct timeval *); 207 void microuptime(struct timeval *tv); 208 void microtime(struct timeval *tv); 209 void nanouptime(struct timespec *ts); 210 void nanotime(struct timespec *ts); 211 time_t get_approximate_time_t(void); 212 void set_timeofday(struct timespec *ts); 213 void kern_adjtime(int64_t, int64_t *); 214 void kern_reladjtime(int64_t); 215 void timevaladd(struct timeval *, const struct timeval *); 216 void timevalsub(struct timeval *, const struct timeval *); 217 int tvtohz_high(struct timeval *); 218 int tvtohz_low(struct timeval *); 219 int tstohz_high(struct timespec *); 220 int tstohz_low(struct timespec *); 221 int tsc_test_target(int64_t target); 222 void tsc_delay(int ns); 223 int clock_nanosleep1(clockid_t clock_id, int flags, 224 struct timespec *rqt, struct timespec *rmt); 225 int nanosleep1(struct timespec *rqt, struct timespec *rmt); 226 227 void timespec2fattime(const struct timespec *tsp, int utc, uint16_t *ddp, 228 uint16_t *dtp, uint8_t *dhp); 229 void fattime2timespec(unsigned dd, unsigned dt, unsigned dh, int utc, 230 struct timespec *tsp); 231 232 tsc_uclock_t tsc_get_target(int ns); 233 234 #else /* !_KERNEL */ 235 236 #include <time.h> 237 #include <sys/cdefs.h> 238 239 #endif /* _KERNEL */ 240 241 __BEGIN_DECLS 242 243 #if __BSD_VISIBLE 244 int adjtime(const struct timeval *, struct timeval *); 245 int futimes(int, const struct timeval *); 246 int futimesat(int fd, const char *path, const struct timeval times[2]); 247 int lutimes(const char *, const struct timeval *); 248 int settimeofday(const struct timeval *, const struct timezone *); 249 250 #define HAVE_FUTIMESAT 1 251 252 #endif 253 254 #if __XSI_VISIBLE 255 int getitimer(int, struct itimerval *); 256 int gettimeofday(struct timeval * __restrict, struct timezone * __restrict); 257 int setitimer(int, const struct itimerval * __restrict, 258 struct itimerval * __restrict); 259 int utimes(const char *, const struct timeval *); 260 #endif 261 262 __END_DECLS 263 264 #endif /* !_SYS_TIME_H_ */ 265