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 1.10 2004/11/20 20:25:13 dillon 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 /* 46 * Structure returned by gettimeofday(2) system call, 47 * and used in other calls. 48 */ 49 struct timeval { 50 long tv_sec; /* seconds */ 51 long tv_usec; /* and microseconds */ 52 }; 53 54 #ifndef _TIMESPEC_DECLARED 55 #define _TIMESPEC_DECLARED 56 struct timespec { 57 time_t tv_sec; /* seconds */ 58 long tv_nsec; /* and nanoseconds */ 59 }; 60 #endif 61 62 #define TIMEVAL_TO_TIMESPEC(tv, ts) \ 63 do { \ 64 (ts)->tv_sec = (tv)->tv_sec; \ 65 (ts)->tv_nsec = (tv)->tv_usec * 1000; \ 66 } while (0) 67 #define TIMESPEC_TO_TIMEVAL(tv, ts) \ 68 do { \ 69 (tv)->tv_sec = (ts)->tv_sec; \ 70 (tv)->tv_usec = (ts)->tv_nsec / 1000; \ 71 } while (0) 72 73 struct timezone { 74 int tz_minuteswest; /* minutes west of Greenwich */ 75 int tz_dsttime; /* type of dst correction */ 76 }; 77 #define DST_NONE 0 /* not on dst */ 78 #define DST_USA 1 /* USA style dst */ 79 #define DST_AUST 2 /* Australian style dst */ 80 #define DST_WET 3 /* Western European dst */ 81 #define DST_MET 4 /* Middle European dst */ 82 #define DST_EET 5 /* Eastern European dst */ 83 #define DST_CAN 6 /* Canada */ 84 85 #ifdef _KERNEL 86 87 /* Operations on timespecs */ 88 #define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) 89 #define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) 90 #define timespeccmp(tvp, uvp, cmp) \ 91 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 92 ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \ 93 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 94 #define timespecadd(vvp, uvp) \ 95 do { \ 96 (vvp)->tv_sec += (uvp)->tv_sec; \ 97 (vvp)->tv_nsec += (uvp)->tv_nsec; \ 98 if ((vvp)->tv_nsec >= 1000000000) { \ 99 (vvp)->tv_sec++; \ 100 (vvp)->tv_nsec -= 1000000000; \ 101 } \ 102 } while (0) 103 #define timespecsub(vvp, uvp) \ 104 do { \ 105 (vvp)->tv_sec -= (uvp)->tv_sec; \ 106 (vvp)->tv_nsec -= (uvp)->tv_nsec; \ 107 if ((vvp)->tv_nsec < 0) { \ 108 (vvp)->tv_sec--; \ 109 (vvp)->tv_nsec += 1000000000; \ 110 } \ 111 } while (0) 112 113 /* Operations on timevals. */ 114 115 #define timevalclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 116 #define timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 117 #define timevalcmp(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)) 121 122 /* timevaladd and timevalsub are not inlined */ 123 124 #endif /* _KERNEL */ 125 126 #ifndef _KERNEL /* NetBSD/OpenBSD compatible interfaces */ 127 128 #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 129 #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 130 #define timercmp(tvp, uvp, cmp) \ 131 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 132 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 133 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 134 #define timeradd(tvp, uvp, vvp) \ 135 do { \ 136 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 137 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 138 if ((vvp)->tv_usec >= 1000000) { \ 139 (vvp)->tv_sec++; \ 140 (vvp)->tv_usec -= 1000000; \ 141 } \ 142 } while (0) 143 #define timersub(tvp, uvp, vvp) \ 144 do { \ 145 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 146 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 147 if ((vvp)->tv_usec < 0) { \ 148 (vvp)->tv_sec--; \ 149 (vvp)->tv_usec += 1000000; \ 150 } \ 151 } while (0) 152 #endif 153 154 /* 155 * Names of the interval timers, and structure 156 * defining a timer setting. 157 */ 158 #define ITIMER_REAL 0 159 #define ITIMER_VIRTUAL 1 160 #define ITIMER_PROF 2 161 162 struct itimerval { 163 struct timeval it_interval; /* timer interval */ 164 struct timeval it_value; /* current value */ 165 }; 166 167 /* 168 * Getkerninfo clock information structure 169 */ 170 struct clockinfo { 171 int hz; /* clock frequency */ 172 int tick; /* micro-seconds per hz tick */ 173 int tickadj; /* clock skew rate for adjtime() */ 174 int stathz; /* statistics clock frequency */ 175 int profhz; /* profiling clock frequency */ 176 }; 177 178 /* CLOCK_REALTIME and TIMER_ABSTIME are supposed to be in time.h */ 179 180 #ifndef CLOCK_REALTIME 181 #define CLOCK_REALTIME 0 182 #endif 183 #define CLOCK_VIRTUAL 1 184 #define CLOCK_PROF 2 185 186 #define TIMER_RELTIME 0x0 /* relative timer */ 187 #ifndef TIMER_ABSTIME 188 #define TIMER_ABSTIME 0x1 /* absolute timer */ 189 #endif 190 191 #ifdef _KERNEL 192 extern time_t time_second; 193 194 void initclocks_pcpu(void); 195 void getmicrouptime (struct timeval *tv); 196 void getmicrotime (struct timeval *tv); 197 void getnanouptime (struct timespec *tv); 198 void getnanotime (struct timespec *tv); 199 int itimerdecr (struct itimerval *itp, int usec); 200 int itimerfix (struct timeval *tv); 201 int ppsratecheck (struct timeval *, int *, int usec); 202 int ratecheck (struct timeval *, const struct timeval *); 203 void microuptime (struct timeval *tv); 204 void microtime (struct timeval *tv); 205 void nanouptime (struct timespec *ts); 206 void nanotime (struct timespec *ts); 207 void set_timeofday(struct timespec *ts); 208 void timevaladd (struct timeval *, struct timeval *); 209 void timevalsub (struct timeval *, struct timeval *); 210 int tvtohz_high (struct timeval *); 211 int tvtohz_low (struct timeval *); 212 #else /* !_KERNEL */ 213 #include <time.h> 214 215 #include <sys/cdefs.h> 216 217 __BEGIN_DECLS 218 int adjtime (const struct timeval *, struct timeval *); 219 int futimes (int, const struct timeval *); 220 int getitimer (int, struct itimerval *); 221 int gettimeofday (struct timeval *, struct timezone *); 222 int lutimes (const char *, const struct timeval *); 223 int setitimer (int, const struct itimerval *, struct itimerval *); 224 int settimeofday (const struct timeval *, const struct timezone *); 225 int utimes (const char *, const struct timeval *); 226 __END_DECLS 227 228 #endif /* !_KERNEL */ 229 230 #endif /* !_SYS_TIME_H_ */ 231