[unix-history] / sys / sys / time.h

/*
 * Copyright (c) 1982, 1986 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.
 *
 *	from: @(#)time.h	7.6 (Berkeley) 2/22/91
 *	$Id: time.h,v 1.3 1993/11/25 01:38:06 wollman Exp $
 */

#ifndef _SYS_TIME_H_
#define _SYS_TIME_H_

/*
 * Structure returned by gettimeofday(2) system call,
 * and used in other calls.
 */
struct timeval {
	long	tv_sec;		/* seconds */
	long	tv_usec;	/* and microseconds */
};

struct timezone {
	int	tz_minuteswest;	/* minutes west of Greenwich */
	int	tz_dsttime;	/* type of dst correction */
};
#define	DST_NONE	0	/* not on dst */
#define	DST_USA		1	/* USA style dst */
#define	DST_AUST	2	/* Australian style dst */
#define	DST_WET		3	/* Western European dst */
#define	DST_MET		4	/* Middle European dst */
#define	DST_EET		5	/* Eastern European dst */
#define	DST_CAN		6	/* Canada */

/*
 * Operations on timevals.
 *
 * NB: timercmp does not work for >= or <=.
 */
#define	timerisset(tvp)		((tvp)->tv_sec || (tvp)->tv_usec)
#define	timercmp(tvp, uvp, cmp)	\
	((tvp)->tv_sec cmp (uvp)->tv_sec || \
	 (tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
#define	timerclear(tvp)		(tvp)->tv_sec = (tvp)->tv_usec = 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 */
};

#ifdef KERNEL
extern void timevaladd(struct timeval *, struct timeval *);
extern void timevalsub(struct timeval *, struct timeval *);
extern void timevalfix(struct timeval *);
extern void realitexpire(caddr_t, int);
extern int itimerdecr(struct itimerval *, int);	/* XXX 2nd arg? */
extern u_long hzto(struct timeval *);

#else /* not KERNEL */
#include <time.h>

#ifndef _POSIX_SOURCE
#include <sys/cdefs.h>

__BEGIN_DECLS
int	adjtime __P((const struct timeval *, struct timeval *));
int	getitimer __P((int, struct itimerval *));
int	gettimeofday __P((struct timeval *, struct timezone *));
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 /* !KERNEL */

#endif /* !_SYS_TIME_H_ */
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1982, 1986 The Regents of the University of California.
	3	* 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	*
01e1b05c	33	* from: @(#)time.h 7.6 (Berkeley) 2/22/91
fde1aeb2	34	* $Id: time.h,v 1.3 1993/11/25 01:38:06 wollman Exp $
15637ed4 RG	35	*/
	36
	37	#ifndef _SYS_TIME_H_
	38	#define _SYS_TIME_H_
	39
	40	/*
	41	* Structure returned by gettimeofday(2) system call,
	42	* and used in other calls.
	43	*/
	44	struct timeval {
	45	long tv_sec; /* seconds */
	46	long tv_usec; /* and microseconds */
	47	};
	48
	49	struct timezone {
	50	int tz_minuteswest; /* minutes west of Greenwich */
	51	int tz_dsttime; /* type of dst correction */
	52	};
	53	#define DST_NONE 0 /* not on dst */
	54	#define DST_USA 1 /* USA style dst */
	55	#define DST_AUST 2 /* Australian style dst */
	56	#define DST_WET 3 /* Western European dst */
	57	#define DST_MET 4 /* Middle European dst */
	58	#define DST_EET 5 /* Eastern European dst */
	59	#define DST_CAN 6 /* Canada */
	60
	61	/*
	62	* Operations on timevals.
	63	*
	64	* NB: timercmp does not work for >= or <=.
	65	*/
	66	#define timerisset(tvp) ((tvp)->tv_sec \|\| (tvp)->tv_usec)
	67	#define timercmp(tvp, uvp, cmp) \
	68	((tvp)->tv_sec cmp (uvp)->tv_sec \|\| \
	69	(tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
	70	#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
	71
	72	/*
	73	* Names of the interval timers, and structure
	74	* defining a timer setting.
	75	*/
	76	#define ITIMER_REAL 0
	77	#define ITIMER_VIRTUAL 1
	78	#define ITIMER_PROF 2
	79
	80	struct itimerval {
	81	struct timeval it_interval; /* timer interval */
	82	struct timeval it_value; /* current value */
	83	};
	84
4c45483e GW	85	#ifdef KERNEL
	86	extern void timevaladd(struct timeval , struct timeval );
	87	extern void timevalsub(struct timeval , struct timeval );
	88	extern void timevalfix(struct timeval *);
	89	extern void realitexpire(caddr_t, int);
fde1aeb2 GW	90	extern int itimerdecr(struct itimerval , int); / XXX 2nd arg? */
fde1aeb2 GW	91	extern u_long hzto(struct timeval *);
4c45483e GW	92
4c45483e GW	93	#else /* not KERNEL */
15637ed4 RG	94	#include <time.h>
	95
	96	#ifndef _POSIX_SOURCE
	97	#include <sys/cdefs.h>
	98
	99	__BEGIN_DECLS
	100	int adjtime __P((const struct timeval , struct timeval ));
	101	int getitimer __P((int, struct itimerval *));
	102	int gettimeofday __P((struct timeval , struct timezone ));
	103	int setitimer __P((int, const struct itimerval , struct itimerval ));
	104	int settimeofday __P((const struct timeval , const struct timezone ));
	105	int utimes __P((const char , const struct timeval ));
	106	__END_DECLS
	107	#endif /* !POSIX */
	108
	109	#endif /* !KERNEL */
	110
	111	#endif /* !_SYS_TIME_H_ */