2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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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.
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18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
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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 1.19 2008/05/30 09:39:46 corecode Exp $
42 #include <sys/types.h>
45 #include <sys/select.h>
48 * Structure returned by gettimeofday(2) system call,
49 * and used in other calls.
52 long tv_sec; /* seconds */
53 long tv_usec; /* and microseconds */
56 #ifndef _TIMESPEC_DECLARED
57 #define _TIMESPEC_DECLARED
59 time_t tv_sec; /* seconds */
60 long tv_nsec; /* and nanoseconds */
64 #define TIMEVAL_TO_TIMESPEC(tv, ts) \
66 (ts)->tv_sec = (tv)->tv_sec; \
67 (ts)->tv_nsec = (tv)->tv_usec * 1000; \
69 #define TIMESPEC_TO_TIMEVAL(tv, ts) \
71 (tv)->tv_sec = (ts)->tv_sec; \
72 (tv)->tv_usec = (ts)->tv_nsec / 1000; \
76 int tz_minuteswest; /* minutes west of Greenwich */
77 int tz_dsttime; /* type of dst correction */
79 #define DST_NONE 0 /* not on dst */
80 #define DST_USA 1 /* USA style dst */
81 #define DST_AUST 2 /* Australian style dst */
82 #define DST_WET 3 /* Western European dst */
83 #define DST_MET 4 /* Middle European dst */
84 #define DST_EET 5 /* Eastern European dst */
85 #define DST_CAN 6 /* Canada */
89 /* Operations on timespecs */
90 #define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0)
91 #define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec)
92 #define timespeccmp(tvp, uvp, cmp) \
93 (((tvp)->tv_sec == (uvp)->tv_sec) ? \
94 ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \
95 ((tvp)->tv_sec cmp (uvp)->tv_sec))
96 #define timespecadd(vvp, uvp) \
98 (vvp)->tv_sec += (uvp)->tv_sec; \
99 (vvp)->tv_nsec += (uvp)->tv_nsec; \
100 if ((vvp)->tv_nsec >= 1000000000) { \
102 (vvp)->tv_nsec -= 1000000000; \
105 #define timespecsub(vvp, uvp) \
107 (vvp)->tv_sec -= (uvp)->tv_sec; \
108 (vvp)->tv_nsec -= (uvp)->tv_nsec; \
109 if ((vvp)->tv_nsec < 0) { \
111 (vvp)->tv_nsec += 1000000000; \
115 /* Operations on timevals. */
117 #define timevalclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
118 #define timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
119 #define timevalcmp(tvp, uvp, cmp) \
120 (((tvp)->tv_sec == (uvp)->tv_sec) ? \
121 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
122 ((tvp)->tv_sec cmp (uvp)->tv_sec))
124 /* timevaladd and timevalsub are not inlined */
128 #ifndef _KERNEL /* NetBSD/OpenBSD compatible interfaces */
130 #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
131 #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
132 #define timercmp(tvp, uvp, cmp) \
133 (((tvp)->tv_sec == (uvp)->tv_sec) ? \
134 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
135 ((tvp)->tv_sec cmp (uvp)->tv_sec))
136 #define timeradd(tvp, uvp, vvp) \
138 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
139 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
140 if ((vvp)->tv_usec >= 1000000) { \
142 (vvp)->tv_usec -= 1000000; \
145 #define timersub(tvp, uvp, vvp) \
147 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
148 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
149 if ((vvp)->tv_usec < 0) { \
151 (vvp)->tv_usec += 1000000; \
157 * Names of the interval timers, and structure
158 * defining a timer setting.
160 #define ITIMER_REAL 0
161 #define ITIMER_VIRTUAL 1
162 #define ITIMER_PROF 2
165 struct timeval it_interval; /* timer interval */
166 struct timeval it_value; /* current value */
170 * Getkerninfo clock information structure
172 * XXX Should be removed, use kinfo_clockinfo insteada.
175 int hz; /* clock frequency */
176 int tick; /* micro-seconds per hz tick */
177 int tickadj; /* clock skew rate for adjtime() */
178 int stathz; /* statistics clock frequency */
179 int profhz; /* profiling clock frequency */
182 /* CLOCK_REALTIME and TIMER_ABSTIME are supposed to be in time.h */
184 #ifndef CLOCK_REALTIME
185 #define CLOCK_REALTIME 0
187 #define CLOCK_VIRTUAL 1
189 #define CLOCK_MONOTONIC 4
191 #define TIMER_RELTIME 0x0 /* relative timer */
192 #ifndef TIMER_ABSTIME
193 #define TIMER_ABSTIME 0x1 /* absolute timer */
210 extern time_t time_second;
211 extern int64_t ntp_tick_permanent;
212 extern int64_t ntp_tick_acc;
213 extern int64_t ntp_delta;
214 extern int64_t ntp_big_delta;
215 extern int32_t ntp_tick_delta;
216 extern int32_t ntp_default_tick_delta;
217 extern time_t ntp_leap_second;
218 extern int ntp_leap_insert;
220 void initclocks_pcpu(void);
221 void getmicrouptime (struct timeval *tv);
222 void getmicrotime (struct timeval *tv);
223 void getnanouptime (struct timespec *tv);
224 void getnanotime (struct timespec *tv);
225 int itimerdecr (struct itimerval *itp, int usec);
226 int itimerfix (struct timeval *tv);
227 int ppsratecheck (struct timeval *, int *, int usec);
228 int ratecheck (struct timeval *, const struct timeval *);
229 void microuptime (struct timeval *tv);
230 void microtime (struct timeval *tv);
231 void nanouptime (struct timespec *ts);
232 void nanotime (struct timespec *ts);
233 time_t get_approximate_time_t(void);
234 void set_timeofday(struct timespec *ts);
235 void kern_adjtime(int64_t, int64_t *);
236 void kern_reladjtime(int64_t);
237 void timevaladd (struct timeval *, const struct timeval *);
238 void timevalsub (struct timeval *, const struct timeval *);
239 int tvtohz_high (struct timeval *);
240 int tvtohz_low (struct timeval *);
245 #include <sys/cdefs.h>
247 #endif /* !_KERNEL */
250 int adjtime (const struct timeval *, struct timeval *);
251 int futimes (int, const struct timeval *);
252 int getitimer (int, struct itimerval *);
253 int gettimeofday (struct timeval *, struct timezone *);
254 int lutimes (const char *, const struct timeval *);
255 int setitimer (int, const struct itimerval *, struct itimerval *);
256 int settimeofday (const struct timeval *, const struct timezone *);
257 int utimes (const char *, const struct timeval *);
261 #endif /* !_SYS_TIME_H_ */