257 lines
7.9 KiB
C
257 lines
7.9 KiB
C
/* $NetBSD: time.h,v 1.37 2003/02/03 23:47:13 thorpej Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1982, 1986, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)time.h 8.5 (Berkeley) 5/4/95
|
|
*/
|
|
|
|
#ifndef _SYS_TIME_H_
|
|
#define _SYS_TIME_H_
|
|
|
|
#include <sys/types.h>
|
|
#ifdef _KERNEL
|
|
#include <sys/callout.h>
|
|
#include <sys/signal.h>
|
|
#include <sys/queue.h>
|
|
#endif
|
|
|
|
/*
|
|
* Structure returned by gettimeofday(2) system call,
|
|
* and used in other calls.
|
|
*/
|
|
struct timeval {
|
|
long tv_sec; /* seconds */
|
|
long tv_usec; /* and microseconds */
|
|
};
|
|
|
|
/*
|
|
* Structure defined by POSIX.1b to be like a timeval.
|
|
*/
|
|
struct timespec {
|
|
time_t tv_sec; /* seconds */
|
|
long tv_nsec; /* and nanoseconds */
|
|
};
|
|
|
|
#define TIMEVAL_TO_TIMESPEC(tv, ts) { \
|
|
(ts)->tv_sec = (tv)->tv_sec; \
|
|
(ts)->tv_nsec = (tv)->tv_usec * 1000; \
|
|
}
|
|
#define TIMESPEC_TO_TIMEVAL(tv, ts) { \
|
|
(tv)->tv_sec = (ts)->tv_sec; \
|
|
(tv)->tv_usec = (ts)->tv_nsec / 1000; \
|
|
}
|
|
|
|
/*
|
|
* Note: timezone is obsolete. All timezone handling is now in
|
|
* userland. Its just here for back compatibility.
|
|
*/
|
|
struct timezone {
|
|
int tz_minuteswest; /* minutes west of Greenwich */
|
|
int tz_dsttime; /* type of dst correction */
|
|
};
|
|
|
|
/* Operations on timevals. */
|
|
#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
|
|
#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
|
|
#define timercmp(tvp, uvp, cmp) \
|
|
(((tvp)->tv_sec == (uvp)->tv_sec) ? \
|
|
((tvp)->tv_usec cmp (uvp)->tv_usec) : \
|
|
((tvp)->tv_sec cmp (uvp)->tv_sec))
|
|
#define timeradd(tvp, uvp, vvp) \
|
|
do { \
|
|
(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
|
|
(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
|
|
if ((vvp)->tv_usec >= 1000000) { \
|
|
(vvp)->tv_sec++; \
|
|
(vvp)->tv_usec -= 1000000; \
|
|
} \
|
|
} while (/* CONSTCOND */ 0)
|
|
#define timersub(tvp, uvp, vvp) \
|
|
do { \
|
|
(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
|
|
(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
|
|
if ((vvp)->tv_usec < 0) { \
|
|
(vvp)->tv_sec--; \
|
|
(vvp)->tv_usec += 1000000; \
|
|
} \
|
|
} while (/* CONSTCOND */ 0)
|
|
|
|
/* Operations on timespecs. */
|
|
#define timespecclear(tsp) (tsp)->tv_sec = (tsp)->tv_nsec = 0
|
|
#define timespecisset(tsp) ((tsp)->tv_sec || (tsp)->tv_nsec)
|
|
#define timespeccmp(tsp, usp, cmp) \
|
|
(((tsp)->tv_sec == (usp)->tv_sec) ? \
|
|
((tsp)->tv_nsec cmp (usp)->tv_nsec) : \
|
|
((tsp)->tv_sec cmp (usp)->tv_sec))
|
|
#define timespecadd(tsp, usp, vsp) \
|
|
do { \
|
|
(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec; \
|
|
(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec; \
|
|
if ((vsp)->tv_nsec >= 1000000000L) { \
|
|
(vsp)->tv_sec++; \
|
|
(vsp)->tv_nsec -= 1000000000L; \
|
|
} \
|
|
} while (/* CONSTCOND */ 0)
|
|
#define timespecsub(tsp, usp, vsp) \
|
|
do { \
|
|
(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec; \
|
|
(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec; \
|
|
if ((vsp)->tv_nsec < 0) { \
|
|
(vsp)->tv_sec--; \
|
|
(vsp)->tv_nsec += 1000000000L; \
|
|
} \
|
|
} while (/* CONSTCOND */ 0)
|
|
|
|
/*
|
|
* Names of the interval timers, and structure
|
|
* defining a timer setting.
|
|
*/
|
|
#define ITIMER_REAL 0
|
|
#define ITIMER_VIRTUAL 1
|
|
#define ITIMER_PROF 2
|
|
|
|
struct itimerval {
|
|
struct timeval it_interval; /* timer interval */
|
|
struct timeval it_value; /* current value */
|
|
};
|
|
|
|
/*
|
|
* Structure defined by POSIX.1b to be like a itimerval, but with
|
|
* timespecs. Used in the timer_*() system calls.
|
|
*/
|
|
struct itimerspec {
|
|
struct timespec it_interval;
|
|
struct timespec it_value;
|
|
};
|
|
|
|
/*
|
|
* Getkerninfo clock information structure
|
|
*/
|
|
struct clockinfo {
|
|
int hz; /* clock frequency */
|
|
int tick; /* micro-seconds per hz tick */
|
|
int tickadj; /* clock skew rate for adjtime() */
|
|
int stathz; /* statistics clock frequency */
|
|
int profhz; /* profiling clock frequency */
|
|
};
|
|
|
|
#define CLOCK_REALTIME 0
|
|
#define CLOCK_VIRTUAL 1
|
|
#define CLOCK_PROF 2
|
|
#define CLOCK_MONOTONIC 3
|
|
|
|
#define TIMER_RELTIME 0x0 /* relative timer */
|
|
#define TIMER_ABSTIME 0x1 /* absolute timer */
|
|
|
|
#ifdef _KERNEL
|
|
/*
|
|
* Structure used to manage timers in a process.
|
|
*/
|
|
struct ptimer {
|
|
union {
|
|
struct callout pt_ch;
|
|
struct {
|
|
LIST_ENTRY(ptimer) pt_list;
|
|
int pt_active;
|
|
} pt_nonreal;
|
|
} pt_data;
|
|
struct sigevent pt_ev;
|
|
struct itimerval pt_time;
|
|
/* XXX Use ksiginfo_t when it is available. */
|
|
siginfo_t pt_info;
|
|
int pt_overruns; /* Overruns currently accumulating */
|
|
int pt_poverruns; /* Overruns associated w/ a delivery */
|
|
int pt_type;
|
|
int pt_entry;
|
|
struct proc *pt_proc;
|
|
};
|
|
|
|
#define pt_ch pt_data.pt_ch
|
|
#define pt_list pt_data.pt_nonreal.pt_list
|
|
#define pt_active pt_data.pt_nonreal.pt_active
|
|
|
|
#define TIMER_MAX 32 /* See ptimers->pts_fired if you enlarge this */
|
|
#define TIMERS_ALL 0
|
|
#define TIMERS_POSIX 1
|
|
|
|
LIST_HEAD(ptlist, ptimer);
|
|
|
|
struct ptimers {
|
|
struct ptlist pts_virtual;
|
|
struct ptlist pts_prof;
|
|
struct ptimer *pts_timers[TIMER_MAX];
|
|
int pts_fired;
|
|
};
|
|
|
|
int itimerfix __P((struct timeval *tv));
|
|
int itimerdecr __P((struct ptimer *, int usec));
|
|
void itimerfire __P((struct ptimer *));
|
|
void microtime __P((struct timeval *tv));
|
|
int settime __P((struct timeval *));
|
|
int ratecheck __P((struct timeval *, const struct timeval *));
|
|
int ppsratecheck __P((struct timeval *, int *, int));
|
|
int settimeofday1 __P((const struct timeval *, const struct timezone *,
|
|
struct proc *));
|
|
int adjtime1 __P((const struct timeval *, struct timeval *, struct proc *));
|
|
int clock_settime1 __P((clockid_t, const struct timespec *));
|
|
void timer_settime __P((struct ptimer *));
|
|
void timer_gettime __P((struct ptimer *, struct itimerval *));
|
|
void timers_alloc __P((struct proc *));
|
|
void timers_free __P((struct proc *, int));
|
|
void realtimerexpire __P((void *));
|
|
#else /* !_KERNEL */
|
|
|
|
#ifndef _STANDALONE
|
|
#include <time.h>
|
|
|
|
#ifndef _POSIX_SOURCE
|
|
#include <sys/cdefs.h>
|
|
|
|
__BEGIN_DECLS
|
|
int adjtime __P((const struct timeval *, struct timeval *));
|
|
int futimes __P((int, const struct timeval *));
|
|
int getitimer __P((int, struct itimerval *));
|
|
int gettimeofday __P((struct timeval *, struct timezone *));
|
|
int lutimes __P((const char *, const struct timeval *));
|
|
int setitimer __P((int, const struct itimerval *, struct itimerval *));
|
|
int settimeofday __P((const struct timeval *, const struct timezone *));
|
|
int utimes __P((const char *, const struct timeval *));
|
|
__END_DECLS
|
|
#endif /* !POSIX */
|
|
|
|
#endif /* !_STANDALONE */
|
|
|
|
#endif /* !_KERNEL */
|
|
|
|
#endif /* !_SYS_TIME_H_ */
|