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 #ifdef _KERNEL 71 72 /* Operations on timespecs */ 73 #define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) 74 #define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) 75 #define timespeccmp(tvp, uvp, cmp) \ 76 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 77 ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \ 78 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 79 #define timespecadd(vvp, uvp) \ 80 do { \ 81 (vvp)->tv_sec += (uvp)->tv_sec; \ 82 (vvp)->tv_nsec += (uvp)->tv_nsec; \ 83 if ((vvp)->tv_nsec >= 1000000000) { \ 84 (vvp)->tv_sec++; \ 85 (vvp)->tv_nsec -= 1000000000; \ 86 } \ 87 } while (0) 88 #define timespecsub(vvp, uvp) \ 89 do { \ 90 (vvp)->tv_sec -= (uvp)->tv_sec; \ 91 (vvp)->tv_nsec -= (uvp)->tv_nsec; \ 92 if ((vvp)->tv_nsec < 0) { \ 93 (vvp)->tv_sec--; \ 94 (vvp)->tv_nsec += 1000000000; \ 95 } \ 96 } while (0) 97 98 /* Operations on timevals. */ 99 100 #define timevalclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) 101 #define timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 102 #define timevalcmp(tvp, uvp, cmp) \ 103 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 104 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 105 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 106 107 /* timevaladd and timevalsub are not inlined */ 108 109 #endif /* _KERNEL */ 110 111 #ifndef _KERNEL /* NetBSD/OpenBSD compatible interfaces */ 112 113 #define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) 114 #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 115 #define timercmp(tvp, uvp, cmp) \ 116 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 117 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 118 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 119 #define timeradd(tvp, uvp, vvp) \ 120 do { \ 121 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 122 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 123 if ((vvp)->tv_usec >= 1000000) { \ 124 (vvp)->tv_sec++; \ 125 (vvp)->tv_usec -= 1000000; \ 126 } \ 127 } while (0) 128 #define timersub(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 < 0) { \ 133 (vvp)->tv_sec--; \ 134 (vvp)->tv_usec += 1000000; \ 135 } \ 136 } while (0) 137 #endif 138 139 /* 140 * Names of the interval timers, and structure 141 * defining a timer setting. 142 */ 143 #define ITIMER_REAL 0 144 #define ITIMER_VIRTUAL 1 145 #define ITIMER_PROF 2 146 147 struct itimerval { 148 struct timeval it_interval; /* timer interval */ 149 struct timeval it_value; /* current value */ 150 }; 151 152 /* 153 * Getkerninfo clock information structure 154 */ 155 struct clockinfo { 156 int hz; /* clock frequency */ 157 int tick; /* micro-seconds per hz tick */ 158 int tickadj; /* clock skew rate for adjtime() */ 159 int stathz; /* statistics clock frequency */ 160 int profhz; /* profiling clock frequency */ 161 }; 162 163 /* CLOCK_REALTIME and TIMER_ABSTIME are supposed to be in time.h */ 164 165 #ifndef CLOCK_REALTIME 166 #define CLOCK_REALTIME 0 167 #endif 168 #define CLOCK_VIRTUAL 1 169 #define CLOCK_PROF 2 170 #define CLOCK_MONOTONIC 4 171 172 #define CLOCK_UPTIME 5 /* from freebsd */ 173 #define CLOCK_UPTIME_PRECISE 7 /* from freebsd */ 174 #define CLOCK_UPTIME_FAST 8 /* from freebsd */ 175 #define CLOCK_REALTIME_PRECISE 9 /* from freebsd */ 176 #define CLOCK_REALTIME_FAST 10 /* from freebsd */ 177 #define CLOCK_MONOTONIC_PRECISE 11 /* from freebsd */ 178 #define CLOCK_MONOTONIC_FAST 12 /* from freebsd */ 179 #define CLOCK_SECOND 13 /* from freebsd */ 180 #define CLOCK_THREAD_CPUTIME_ID 14 181 #define CLOCK_PROCESS_CPUTIME_ID 15 182 183 #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 extern time_t time_second; /* simple time_t (can step) */ 191 extern time_t time_uptime; /* monotonic simple uptime / seconds */ 192 extern int64_t ntp_tick_permanent; 193 extern int64_t ntp_tick_acc; 194 extern int64_t ntp_delta; 195 extern int64_t ntp_big_delta; 196 extern int32_t ntp_tick_delta; 197 extern int32_t ntp_default_tick_delta; 198 extern time_t ntp_leap_second; 199 extern int ntp_leap_insert; 200 201 void initclocks_pcpu(void); 202 void getmicrouptime(struct timeval *tv); 203 void getmicrotime(struct timeval *tv); 204 void getnanouptime(struct timespec *tv); 205 void getnanotime(struct timespec *tv); 206 int itimerdecr(struct itimerval *itp, int usec); 207 int itimerfix(struct timeval *tv); 208 int itimespecfix(struct timespec *ts); 209 int ppsratecheck(struct timeval *, int *, int usec); 210 int ratecheck(struct timeval *, const struct timeval *); 211 void microuptime(struct timeval *tv); 212 void microtime(struct timeval *tv); 213 void nanouptime(struct timespec *ts); 214 void nanotime(struct timespec *ts); 215 time_t get_approximate_time_t(void); 216 void set_timeofday(struct timespec *ts); 217 void kern_adjtime(int64_t, int64_t *); 218 void kern_reladjtime(int64_t); 219 void timevaladd(struct timeval *, const struct timeval *); 220 void timevalsub(struct timeval *, const struct timeval *); 221 int tvtohz_high(struct timeval *); 222 int tvtohz_low(struct timeval *); 223 int tstohz_high(struct timespec *); 224 int tstohz_low(struct timespec *); 225 int tsc_test_target(int64_t target); 226 void tsc_delay(int ns); 227 int nanosleep1(struct timespec *rqt, struct timespec *rmt); 228 229 tsc_uclock_t tsc_get_target(int ns); 230 231 #else /* !_KERNEL */ 232 233 #include <time.h> 234 #include <sys/cdefs.h> 235 236 #endif /* !_KERNEL */ 237 238 __BEGIN_DECLS 239 240 #if __BSD_VISIBLE 241 int adjtime(const struct timeval *, struct timeval *); 242 int futimes(int, const struct timeval *); 243 int lutimes(const char *, const struct timeval *); 244 int settimeofday(const struct timeval *, const struct timezone *); 245 #endif 246 247 #if __XSI_VISIBLE 248 int getitimer(int, struct itimerval *); 249 int gettimeofday(struct timeval *, struct timezone *); 250 int setitimer(int, const struct itimerval *, struct itimerval *); 251 int utimes(const char *, const struct timeval *); 252 #endif 253 254 __END_DECLS 255 256 #endif /* !_SYS_TIME_H_ */ 257