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 1.42 1999/12/29 04:24:48 peter Exp $ 35 * $DragonFly: src/sys/sys/time.h,v 1.20 2008/06/18 09:36:07 hasso Exp $ 36 */ 37 38 #ifndef _SYS_TIME_H_ 39 #define _SYS_TIME_H_ 40 41 #ifndef _SYS_TYPES_H_ 42 #include <sys/types.h> 43 #endif 44 45 #include <sys/_timeval.h> 46 #include <sys/select.h> 47 48 #ifndef _TIMESPEC_DECLARED 49 #define _TIMESPEC_DECLARED 50 struct timespec { 51 time_t tv_sec; /* seconds */ 52 long tv_nsec; /* and nanoseconds */ 53 }; 54 #endif 55 56 #define TIMEVAL_TO_TIMESPEC(tv, ts) \ 57 do { \ 58 (ts)->tv_sec = (tv)->tv_sec; \ 59 (ts)->tv_nsec = (tv)->tv_usec * 1000; \ 60 } while (0) 61 #define TIMESPEC_TO_TIMEVAL(tv, ts) \ 62 do { \ 63 (tv)->tv_sec = (ts)->tv_sec; \ 64 (tv)->tv_usec = (ts)->tv_nsec / 1000; \ 65 } while (0) 66 67 struct timezone { 68 int tz_minuteswest; /* minutes west of Greenwich */ 69 int tz_dsttime; /* type of dst correction */ 70 }; 71 #define DST_NONE 0 /* not on dst */ 72 #define DST_USA 1 /* USA style dst */ 73 #define DST_AUST 2 /* Australian style dst */ 74 #define DST_WET 3 /* Western European dst */ 75 #define DST_MET 4 /* Middle European dst */ 76 #define DST_EET 5 /* Eastern European dst */ 77 #define DST_CAN 6 /* Canada */ 78 79 #ifdef _KERNEL 80 81 /* Operations on timespecs */ 82 #define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) 83 #define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) 84 #define timespeccmp(tvp, uvp, cmp) \ 85 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 86 ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \ 87 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 88 #define timespecadd(vvp, uvp) \ 89 do { \ 90 (vvp)->tv_sec += (uvp)->tv_sec; \ 91 (vvp)->tv_nsec += (uvp)->tv_nsec; \ 92 if ((vvp)->tv_nsec >= 1000000000) { \ 93 (vvp)->tv_sec++; \ 94 (vvp)->tv_nsec -= 1000000000; \ 95 } \ 96 } while (0) 97 #define timespecsub(vvp, uvp) \ 98 do { \ 99 (vvp)->tv_sec -= (uvp)->tv_sec; \ 100 (vvp)->tv_nsec -= (uvp)->tv_nsec; \ 101 if ((vvp)->tv_nsec < 0) { \ 102 (vvp)->tv_sec--; \ 103 (vvp)->tv_nsec += 1000000000; \ 104 } \ 105 } while (0) 106 107 /* Operations on timevals. */ 108 109 #define timevalclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 110 #define timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 111 #define timevalcmp(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)) 115 116 /* timevaladd and timevalsub are not inlined */ 117 118 #endif /* _KERNEL */ 119 120 #ifndef _KERNEL /* NetBSD/OpenBSD compatible interfaces */ 121 122 #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 123 #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 124 #define timercmp(tvp, uvp, cmp) \ 125 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 126 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 127 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 128 #define timeradd(tvp, uvp, vvp) \ 129 do { \ 130 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 131 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 132 if ((vvp)->tv_usec >= 1000000) { \ 133 (vvp)->tv_sec++; \ 134 (vvp)->tv_usec -= 1000000; \ 135 } \ 136 } while (0) 137 #define timersub(tvp, uvp, vvp) \ 138 do { \ 139 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 140 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 141 if ((vvp)->tv_usec < 0) { \ 142 (vvp)->tv_sec--; \ 143 (vvp)->tv_usec += 1000000; \ 144 } \ 145 } while (0) 146 #endif 147 148 /* 149 * Names of the interval timers, and structure 150 * defining a timer setting. 151 */ 152 #define ITIMER_REAL 0 153 #define ITIMER_VIRTUAL 1 154 #define ITIMER_PROF 2 155 156 struct itimerval { 157 struct timeval it_interval; /* timer interval */ 158 struct timeval it_value; /* current value */ 159 }; 160 161 /* 162 * Getkerninfo clock information structure 163 * 164 * XXX Should be removed, use kinfo_clockinfo insteada. 165 */ 166 struct clockinfo { 167 int hz; /* clock frequency */ 168 int tick; /* micro-seconds per hz tick */ 169 int tickadj; /* clock skew rate for adjtime() */ 170 int stathz; /* statistics clock frequency */ 171 int profhz; /* profiling clock frequency */ 172 }; 173 174 /* CLOCK_REALTIME and TIMER_ABSTIME are supposed to be in time.h */ 175 176 #ifndef CLOCK_REALTIME 177 #define CLOCK_REALTIME 0 178 #endif 179 #define CLOCK_VIRTUAL 1 180 #define CLOCK_PROF 2 181 #define CLOCK_MONOTONIC 4 182 183 #define TIMER_RELTIME 0x0 /* relative timer */ 184 #ifndef TIMER_ABSTIME 185 #define TIMER_ABSTIME 0x1 /* absolute timer */ 186 #endif 187 188 #ifdef _KERNEL 189 190 /* 191 * For krateprintf() 192 */ 193 struct krate { 194 int freq; 195 int ticks; 196 int count; 197 }; 198 199 #endif 200 201 #ifdef _KERNEL 202 extern time_t time_second; 203 extern int64_t ntp_tick_permanent; 204 extern int64_t ntp_tick_acc; 205 extern int64_t ntp_delta; 206 extern int64_t ntp_big_delta; 207 extern int32_t ntp_tick_delta; 208 extern int32_t ntp_default_tick_delta; 209 extern time_t ntp_leap_second; 210 extern int ntp_leap_insert; 211 212 void initclocks_pcpu(void); 213 void getmicrouptime (struct timeval *tv); 214 void getmicrotime (struct timeval *tv); 215 void getnanouptime (struct timespec *tv); 216 void getnanotime (struct timespec *tv); 217 int itimerdecr (struct itimerval *itp, int usec); 218 int itimerfix (struct timeval *tv); 219 int ppsratecheck (struct timeval *, int *, int usec); 220 int ratecheck (struct timeval *, const struct timeval *); 221 void microuptime (struct timeval *tv); 222 void microtime (struct timeval *tv); 223 void nanouptime (struct timespec *ts); 224 void nanotime (struct timespec *ts); 225 time_t get_approximate_time_t(void); 226 void set_timeofday(struct timespec *ts); 227 void kern_adjtime(int64_t, int64_t *); 228 void kern_reladjtime(int64_t); 229 void timevaladd (struct timeval *, const struct timeval *); 230 void timevalsub (struct timeval *, const struct timeval *); 231 int tvtohz_high (struct timeval *); 232 int tvtohz_low (struct timeval *); 233 234 #else /* !_KERNEL */ 235 236 #include <time.h> 237 #include <sys/cdefs.h> 238 239 #endif /* !_KERNEL */ 240 241 __BEGIN_DECLS 242 int adjtime (const struct timeval *, struct timeval *); 243 int futimes (int, const struct timeval *); 244 int getitimer (int, struct itimerval *); 245 int gettimeofday (struct timeval *, struct timezone *); 246 int lutimes (const char *, const struct timeval *); 247 int setitimer (int, const struct itimerval *, struct itimerval *); 248 int settimeofday (const struct timeval *, const struct timezone *); 249 int utimes (const char *, const struct timeval *); 250 __END_DECLS 251 252 253 #endif /* !_SYS_TIME_H_ */ 254