2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
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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
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 $
42 #include <sys/types.h>
45 #include <sys/_timeval.h>
46 #include <sys/select.h>
48 #ifndef _TIMESPEC_DECLARED
49 #define _TIMESPEC_DECLARED
51 time_t tv_sec
; /* seconds */
52 long tv_nsec
; /* and nanoseconds */
56 #define TIMEVAL_TO_TIMESPEC(tv, ts) \
58 (ts)->tv_sec = (tv)->tv_sec; \
59 (ts)->tv_nsec = (tv)->tv_usec * 1000; \
61 #define TIMESPEC_TO_TIMEVAL(tv, ts) \
63 (tv)->tv_sec = (ts)->tv_sec; \
64 (tv)->tv_usec = (ts)->tv_nsec / 1000; \
68 int tz_minuteswest
; /* minutes west of Greenwich */
69 int tz_dsttime
; /* type of dst correction */
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 */
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) \
90 (vvp)->tv_sec += (uvp)->tv_sec; \
91 (vvp)->tv_nsec += (uvp)->tv_nsec; \
92 if ((vvp)->tv_nsec >= 1000000000) { \
94 (vvp)->tv_nsec -= 1000000000; \
97 #define timespecsub(vvp, uvp) \
99 (vvp)->tv_sec -= (uvp)->tv_sec; \
100 (vvp)->tv_nsec -= (uvp)->tv_nsec; \
101 if ((vvp)->tv_nsec < 0) { \
103 (vvp)->tv_nsec += 1000000000; \
107 /* Operations on timevals. */
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))
116 /* timevaladd and timevalsub are not inlined */
120 #ifndef _KERNEL /* NetBSD/OpenBSD compatible interfaces */
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) \
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) { \
134 (vvp)->tv_usec -= 1000000; \
137 #define timersub(tvp, uvp, vvp) \
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) { \
143 (vvp)->tv_usec += 1000000; \
149 * Names of the interval timers, and structure
150 * defining a timer setting.
152 #define ITIMER_REAL 0
153 #define ITIMER_VIRTUAL 1
154 #define ITIMER_PROF 2
157 struct timeval it_interval
; /* timer interval */
158 struct timeval it_value
; /* current value */
162 * Getkerninfo clock information structure
164 * XXX Should be removed, use kinfo_clockinfo insteada.
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 */
174 /* CLOCK_REALTIME and TIMER_ABSTIME are supposed to be in time.h */
176 #ifndef CLOCK_REALTIME
177 #define CLOCK_REALTIME 0
179 #define CLOCK_VIRTUAL 1
181 #define CLOCK_MONOTONIC 4
183 #define TIMER_RELTIME 0x0 /* relative timer */
184 #ifndef TIMER_ABSTIME
185 #define TIMER_ABSTIME 0x1 /* absolute timer */
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
;
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 int64_t tsc_get_target(int ns
);
234 int tsc_test_target(int64_t target
);
239 #include <sys/cdefs.h>
241 #endif /* !_KERNEL */
244 int adjtime (const struct timeval
*, struct timeval
*);
245 int futimes (int, const struct timeval
*);
246 int getitimer (int, struct itimerval
*);
247 int gettimeofday (struct timeval
*, struct timezone
*);
248 int lutimes (const char *, const struct timeval
*);
249 int setitimer (int, const struct itimerval
*, struct itimerval
*);
250 int settimeofday (const struct timeval
*, const struct timezone
*);
251 int utimes (const char *, const struct timeval
*);
255 #endif /* !_SYS_TIME_H_ */