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/_timespec.h> 46 #include <sys/_timeval.h> 47 #include <sys/select.h> 48 49 #define TIMEVAL_TO_TIMESPEC(tv, ts) \ 50 do { \ 51 (ts)->tv_sec = (tv)->tv_sec; \ 52 (ts)->tv_nsec = (tv)->tv_usec * 1000; \ 53 } while (0) 54 #define TIMESPEC_TO_TIMEVAL(tv, ts) \ 55 do { \ 56 (tv)->tv_sec = (ts)->tv_sec; \ 57 (tv)->tv_usec = (ts)->tv_nsec / 1000; \ 58 } while (0) 59 60 struct timezone { 61 int tz_minuteswest; /* minutes west of Greenwich */ 62 int tz_dsttime; /* type of dst correction */ 63 }; 64 #define DST_NONE 0 /* not on dst */ 65 #define DST_USA 1 /* USA style dst */ 66 #define DST_AUST 2 /* Australian style dst */ 67 #define DST_WET 3 /* Western European dst */ 68 #define DST_MET 4 /* Middle European dst */ 69 #define DST_EET 5 /* Eastern European dst */ 70 #define DST_CAN 6 /* Canada */ 71 72 #ifdef _KERNEL 73 74 /* Operations on timespecs */ 75 #define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) 76 #define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) 77 #define timespeccmp(tvp, uvp, cmp) \ 78 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 79 ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \ 80 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 81 #define timespecadd(vvp, uvp) \ 82 do { \ 83 (vvp)->tv_sec += (uvp)->tv_sec; \ 84 (vvp)->tv_nsec += (uvp)->tv_nsec; \ 85 if ((vvp)->tv_nsec >= 1000000000) { \ 86 (vvp)->tv_sec++; \ 87 (vvp)->tv_nsec -= 1000000000; \ 88 } \ 89 } while (0) 90 #define timespecsub(vvp, uvp) \ 91 do { \ 92 (vvp)->tv_sec -= (uvp)->tv_sec; \ 93 (vvp)->tv_nsec -= (uvp)->tv_nsec; \ 94 if ((vvp)->tv_nsec < 0) { \ 95 (vvp)->tv_sec--; \ 96 (vvp)->tv_nsec += 1000000000; \ 97 } \ 98 } while (0) 99 100 /* Operations on timevals. */ 101 102 #define timevalclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 103 #define timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 104 #define timevalcmp(tvp, uvp, cmp) \ 105 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 106 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 107 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 108 109 /* timevaladd and timevalsub are not inlined */ 110 111 #endif /* _KERNEL */ 112 113 #ifndef _KERNEL /* NetBSD/OpenBSD compatible interfaces */ 114 115 #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 116 #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 117 #define timercmp(tvp, uvp, cmp) \ 118 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 119 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 120 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 121 #define timeradd(tvp, uvp, vvp) \ 122 do { \ 123 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 124 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 125 if ((vvp)->tv_usec >= 1000000) { \ 126 (vvp)->tv_sec++; \ 127 (vvp)->tv_usec -= 1000000; \ 128 } \ 129 } while (0) 130 #define timersub(tvp, uvp, vvp) \ 131 do { \ 132 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 133 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 134 if ((vvp)->tv_usec < 0) { \ 135 (vvp)->tv_sec--; \ 136 (vvp)->tv_usec += 1000000; \ 137 } \ 138 } while (0) 139 #endif 140 141 /* 142 * Names of the interval timers, and structure 143 * defining a timer setting. 144 */ 145 #define ITIMER_REAL 0 146 #define ITIMER_VIRTUAL 1 147 #define ITIMER_PROF 2 148 149 struct itimerval { 150 struct timeval it_interval; /* timer interval */ 151 struct timeval it_value; /* current value */ 152 }; 153 154 /* 155 * Getkerninfo clock information structure 156 * 157 * XXX Should be removed, use kinfo_clockinfo insteada. 158 */ 159 struct clockinfo { 160 int hz; /* clock frequency */ 161 int tick; /* micro-seconds per hz tick */ 162 int tickadj; /* clock skew rate for adjtime() */ 163 int stathz; /* statistics clock frequency */ 164 int profhz; /* profiling clock frequency */ 165 }; 166 167 /* CLOCK_REALTIME and TIMER_ABSTIME are supposed to be in time.h */ 168 169 #ifndef CLOCK_REALTIME 170 #define CLOCK_REALTIME 0 171 #endif 172 #define CLOCK_VIRTUAL 1 173 #define CLOCK_PROF 2 174 #define CLOCK_MONOTONIC 4 175 176 #define TIMER_RELTIME 0x0 /* relative timer */ 177 #ifndef TIMER_ABSTIME 178 #define TIMER_ABSTIME 0x1 /* absolute timer */ 179 #endif 180 181 #ifdef _KERNEL 182 183 extern time_t time_second; 184 extern int64_t ntp_tick_permanent; 185 extern int64_t ntp_tick_acc; 186 extern int64_t ntp_delta; 187 extern int64_t ntp_big_delta; 188 extern int32_t ntp_tick_delta; 189 extern int32_t ntp_default_tick_delta; 190 extern time_t ntp_leap_second; 191 extern int ntp_leap_insert; 192 193 void initclocks_pcpu(void); 194 void getmicrouptime (struct timeval *tv); 195 void getmicrotime (struct timeval *tv); 196 void getnanouptime (struct timespec *tv); 197 void getnanotime (struct timespec *tv); 198 int itimerdecr (struct itimerval *itp, int usec); 199 int itimerfix (struct timeval *tv); 200 int ppsratecheck (struct timeval *, int *, int usec); 201 int ratecheck (struct timeval *, const struct timeval *); 202 void microuptime (struct timeval *tv); 203 void microtime (struct timeval *tv); 204 void nanouptime (struct timespec *ts); 205 void nanotime (struct timespec *ts); 206 time_t get_approximate_time_t(void); 207 void set_timeofday(struct timespec *ts); 208 void kern_adjtime(int64_t, int64_t *); 209 void kern_reladjtime(int64_t); 210 void timevaladd (struct timeval *, const struct timeval *); 211 void timevalsub (struct timeval *, const struct timeval *); 212 int tvtohz_high (struct timeval *); 213 int tvtohz_low (struct timeval *); 214 int tstohz_high (struct timespec *); 215 int tstohz_low (struct timespec *); 216 int64_t tsc_get_target(int ns); 217 int tsc_test_target(int64_t target); 218 219 #else /* !_KERNEL */ 220 221 #include <time.h> 222 #include <sys/cdefs.h> 223 224 #endif /* !_KERNEL */ 225 226 __BEGIN_DECLS 227 int adjtime (const struct timeval *, struct timeval *); 228 int futimes (int, const struct timeval *); 229 int getitimer (int, struct itimerval *); 230 int gettimeofday (struct timeval *, struct timezone *); 231 int lutimes (const char *, const struct timeval *); 232 int setitimer (int, const struct itimerval *, struct itimerval *); 233 int settimeofday (const struct timeval *, const struct timezone *); 234 int utimes (const char *, const struct timeval *); 235 __END_DECLS 236 237 238 #endif /* !_SYS_TIME_H_ */ 239