[apple/xnu.git] / bsd / sys / time.h

/*
 * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
 * 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	8.2 (Berkeley) 7/10/94
 */

#ifndef _SYS_TIME_H_
#define _SYS_TIME_H_

#include <sys/cdefs.h>
#include <sys/_types.h>

#ifndef	_TIME_T
#define	_TIME_T
typedef	__darwin_time_t	time_t;
#endif

#ifndef _SUSECONDS_T
#define _SUSECONDS_T
typedef __darwin_suseconds_t	suseconds_t;
#endif


/*
 * Structure returned by gettimeofday(2) system call,
 * and used in other calls.
 */
#ifndef _TIMEVAL
#define _TIMEVAL
struct timeval {
	time_t		tv_sec;		/* seconds */
	suseconds_t	tv_usec;	/* and microseconds */
};
#endif	/* _TIMEVAL */

/*
 * Structure used as a parameter by getitimer(2) and setitimer(2) system
 * calls.
 */
struct	itimerval {
	struct	timeval it_interval;	/* timer interval */
	struct	timeval it_value;	/* current value */
};

/*
 * Names of the interval timers, and structure
 * defining a timer setting.
 */
#define	ITIMER_REAL	0
#define	ITIMER_VIRTUAL	1
#define	ITIMER_PROF	2


/*
 * [XSI] The fd_set type shall be defined as described in <sys/select.h>.
 *
 * Note:	We use _FD_SET to protect all select related
 *		types and macros
 */
#ifndef _FD_SET
#define	_FD_SET

/*
 * Select uses bit masks of file descriptors in longs.  These macros
 * manipulate such bit fields (the filesystem macros use chars).  The
 * extra protection here is to permit application redefinition above
 * the default size.
 */
#ifndef	FD_SETSIZE
#define	FD_SETSIZE	1024
#endif

#define	__DARWIN_NBBY	8				/* bits in a byte */
#define __DARWIN_NFDBITS	(sizeof(__int32_t) * __DARWIN_NBBY) /* bits per mask */
#define	__DARWIN_howmany(x, y) (((x) + ((y) - 1)) / (y))	/* # y's == x bits? */

__BEGIN_DECLS
typedef	struct fd_set {
	__int32_t	fds_bits[__DARWIN_howmany(FD_SETSIZE, __DARWIN_NFDBITS)];
} fd_set;
__END_DECLS

#define	FD_SET(n, p)	((p)->fds_bits[(n)/__DARWIN_NFDBITS] |= (1<<((n) % __DARWIN_NFDBITS)))
#define	FD_CLR(n, p)	((p)->fds_bits[(n)/__DARWIN_NFDBITS] &= ~(1<<((n) % __DARWIN_NFDBITS)))
#define	FD_ISSET(n, p)	((p)->fds_bits[(n)/__DARWIN_NFDBITS] & (1<<((n) % __DARWIN_NFDBITS)))
#if __GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ >= 3
/*
 * Use the built-in bzero function instead of the library version so that
 * we do not pollute the namespace or introduce prototype warnings.
 */
#define	FD_ZERO(p)	__builtin_bzero(p, sizeof(*(p)))
#else
#define	FD_ZERO(p)	bzero(p, sizeof(*(p)))
#endif
#ifndef _POSIX_C_SOURCE
#define	FD_COPY(f, t)	bcopy(f, t, sizeof(*(f)))
#endif	/* !_POSIX_C_SOURCE */

#endif	/* !_FD_SET */


#ifndef _POSIX_C_SOURCE
/*
 * Structure defined by POSIX.4 to be like a timeval.
 */
#ifndef _TIMESPEC
#define _TIMESPEC
struct timespec {
	time_t	tv_sec;		/* seconds */
	long	tv_nsec;	/* and nanoseconds */
};

#ifdef KERNEL
// LP64todo - should this move?
#include <machine/types.h>	/* user_time_t */

/* LP64 version of struct timeval.  time_t is a long and must grow when 
 * we're dealing with a 64-bit process.
 * WARNING - keep in sync with struct timeval
 */
#if __DARWIN_ALIGN_NATURAL
#pragma options align=natural
#endif

struct user_timeval {
	user_time_t	tv_sec;		/* seconds */
	suseconds_t	tv_usec;	/* and microseconds */
};	

struct	user_itimerval {
	struct	user_timeval it_interval;	/* timer interval */
	struct	user_timeval it_value;		/* current value */
};

/* LP64 version of struct timespec.  time_t is a long and must grow when 
 * we're dealing with a 64-bit process.
 * WARNING - keep in sync with struct timespec
 */
struct user_timespec {
	user_time_t	tv_sec;		/* seconds */
	int32_t	tv_nsec;	/* and nanoseconds */
};

#if __DARWIN_ALIGN_NATURAL
#pragma options align=reset
#endif

#endif // KERNEL
#endif

#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;				\
}

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. */
#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 (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 (0)

#define timevalcmp(l, r, cmp)   timercmp(l, r, cmp) /* freebsd */

/*
 * 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 */
};
#endif /* ! _POSIX_C_SOURCE */


#ifdef KERNEL

#ifndef _POSIX_C_SOURCE
__BEGIN_DECLS
void	microtime(struct timeval *tv);
void	microuptime(struct timeval *tv);
#define getmicrotime(a)		microtime(a)
#define getmicrouptime(a)	microuptime(a)
void	nanotime(struct timespec *ts);
void	nanouptime(struct timespec *ts);
#define getnanotime(a)		nanotime(a)
#define getnanouptime(a)	nanouptime(a)
void	timevaladd(struct timeval *t1, struct timeval *t2);
void	timevalsub(struct timeval *t1, struct timeval *t2);
void	timevalfix(struct timeval *t1);
#ifdef	BSD_KERNEL_PRIVATE
time_t	boottime_sec(void);
void	inittodr(time_t base);
int	itimerfix(struct timeval *tv);
int	itimerdecr(struct itimerval *itp, int usec);
#endif /* BSD_KERNEL_PRIVATE */

__END_DECLS

#endif /* ! _POSIX_C_SOURCE */

#else /* !KERNEL */

__BEGIN_DECLS

#ifndef _POSIX_C_SOURCE
#include <time.h>

int	adjtime(const struct timeval *, struct timeval *);
int	futimes(int, const struct timeval *);
int	settimeofday(const struct timeval *, const struct timezone *);
#endif /* ! _POSIX_C_SOURCE */

int	getitimer(int, struct itimerval *);
int	gettimeofday(struct timeval * __restrict, struct timezone * __restrict);
int	select(int, fd_set * __restrict, fd_set * __restrict,
		fd_set * __restrict, struct timeval * __restrict);
int	setitimer(int, const struct itimerval * __restrict,
		struct itimerval * __restrict);
int	utimes(const char *, const struct timeval *);

__END_DECLS

#endif /* !KERNEL */

#endif /* !_SYS_TIME_H_ */
Commit	Line	Data
1c79356b	1	/*
91447636	2	* Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
1c79356b A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
e5568f75 A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
1c79356b	11	*
e5568f75 A	12	* This Original Code and all software distributed under the License are
e5568f75 A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
e5568f75 A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
1c79356b A	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
	23	/*
	24	* Copyright (c) 1982, 1986, 1993
	25	* The Regents of the University of California. All rights reserved.
	26	*
	27	* Redistribution and use in source and binary forms, with or without
	28	* modification, are permitted provided that the following conditions
	29	* are met:
	30	* 1. Redistributions of source code must retain the above copyright
	31	* notice, this list of conditions and the following disclaimer.
	32	* 2. Redistributions in binary form must reproduce the above copyright
	33	* notice, this list of conditions and the following disclaimer in the
	34	* documentation and/or other materials provided with the distribution.
	35	* 3. All advertising materials mentioning features or use of this software
	36	* must display the following acknowledgement:
	37	* This product includes software developed by the University of
	38	* California, Berkeley and its contributors.
	39	* 4. Neither the name of the University nor the names of its contributors
	40	* may be used to endorse or promote products derived from this software
	41	* without specific prior written permission.
	42	*
	43	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	44	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	45	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	46	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	47	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	48	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	49	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	50	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	51	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	52	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	53	* SUCH DAMAGE.
	54	*
	55	* @(#)time.h 8.2 (Berkeley) 7/10/94
	56	*/
	57
	58	#ifndef _SYS_TIME_H_
	59	#define _SYS_TIME_H_
	60
91447636 A	61	#include <sys/cdefs.h>
	62	#include <sys/_types.h>
	63
	64	#ifndef _TIME_T
	65	#define _TIME_T
	66	typedef __darwin_time_t time_t;
	67	#endif
	68
	69	#ifndef _SUSECONDS_T
	70	#define _SUSECONDS_T
	71	typedef __darwin_suseconds_t suseconds_t;
	72	#endif
	73
1c79356b	74
1c79356b A	75	/*
	76	* Structure returned by gettimeofday(2) system call,
	77	* and used in other calls.
	78	*/
91447636 A	79	#ifndef _TIMEVAL
91447636 A	80	#define _TIMEVAL
1c79356b	81	struct timeval {
91447636 A	82	time_t tv_sec; /* seconds */
	83	suseconds_t tv_usec; /* and microseconds */
	84	};
	85	#endif /* _TIMEVAL */
	86
	87	/*
	88	* Structure used as a parameter by getitimer(2) and setitimer(2) system
	89	* calls.
	90	*/
	91	struct itimerval {
	92	struct timeval it_interval; /* timer interval */
	93	struct timeval it_value; /* current value */
1c79356b A	94	};
1c79356b A	95
91447636 A	96	/*
	97	* Names of the interval timers, and structure
	98	* defining a timer setting.
	99	*/
	100	#define ITIMER_REAL 0
	101	#define ITIMER_VIRTUAL 1
	102	#define ITIMER_PROF 2
	103
	104
	105	/*
	106	* [XSI] The fd_set type shall be defined as described in <sys/select.h>.
	107	*
	108	* Note: We use _FD_SET to protect all select related
	109	* types and macros
	110	*/
	111	#ifndef _FD_SET
	112	#define _FD_SET
	113
	114	/*
	115	* Select uses bit masks of file descriptors in longs. These macros
	116	* manipulate such bit fields (the filesystem macros use chars). The
	117	* extra protection here is to permit application redefinition above
	118	* the default size.
	119	*/
	120	#ifndef FD_SETSIZE
	121	#define FD_SETSIZE 1024
	122	#endif
	123
	124	#define __DARWIN_NBBY 8 /* bits in a byte */
	125	#define __DARWIN_NFDBITS (sizeof(__int32_t) * __DARWIN_NBBY) /* bits per mask */
	126	#define __DARWIN_howmany(x, y) (((x) + ((y) - 1)) / (y)) /* # y's == x bits? */
	127
	128	__BEGIN_DECLS
	129	typedef struct fd_set {
	130	__int32_t fds_bits[__DARWIN_howmany(FD_SETSIZE, __DARWIN_NFDBITS)];
	131	} fd_set;
	132	__END_DECLS
	133
	134	#define FD_SET(n, p) ((p)->fds_bits[(n)/__DARWIN_NFDBITS] \|= (1<<((n) % __DARWIN_NFDBITS)))
	135	#define FD_CLR(n, p) ((p)->fds_bits[(n)/__DARWIN_NFDBITS] &= ~(1<<((n) % __DARWIN_NFDBITS)))
	136	#define FD_ISSET(n, p) ((p)->fds_bits[(n)/__DARWIN_NFDBITS] & (1<<((n) % __DARWIN_NFDBITS)))
	137	#if __GNUC__ > 3 \|\| __GNUC__ == 3 && __GNUC_MINOR__ >= 3
	138	/*
	139	* Use the built-in bzero function instead of the library version so that
	140	* we do not pollute the namespace or introduce prototype warnings.
	141	*/
	142	#define FD_ZERO(p) __builtin_bzero(p, sizeof(*(p)))
	143	#else
	144	#define FD_ZERO(p) bzero(p, sizeof(*(p)))
	145	#endif
	146	#ifndef _POSIX_C_SOURCE
	147	#define FD_COPY(f, t) bcopy(f, t, sizeof(*(f)))
	148	#endif /* !_POSIX_C_SOURCE */
	149
	150	#endif /* !_FD_SET */
	151
	152
	153	#ifndef _POSIX_C_SOURCE
1c79356b A	154	/*
	155	* Structure defined by POSIX.4 to be like a timeval.
	156	*/
91447636 A	157	#ifndef _TIMESPEC
91447636 A	158	#define _TIMESPEC
1c79356b A	159	struct timespec {
1c79356b A	160	time_t tv_sec; /* seconds */
91447636 A	161	long tv_nsec; /* and nanoseconds */
	162	};
	163
	164	#ifdef KERNEL
	165	// LP64todo - should this move?
	166	#include <machine/types.h> /* user_time_t */
	167
	168	/* LP64 version of struct timeval. time_t is a long and must grow when
	169	* we're dealing with a 64-bit process.
	170	* WARNING - keep in sync with struct timeval
	171	*/
	172	#if __DARWIN_ALIGN_NATURAL
	173	#pragma options align=natural
	174	#endif
	175
	176	struct user_timeval {
	177	user_time_t tv_sec; /* seconds */
	178	suseconds_t tv_usec; /* and microseconds */
	179	};
	180
	181	struct user_itimerval {
	182	struct user_timeval it_interval; /* timer interval */
	183	struct user_timeval it_value; /* current value */
	184	};
	185
	186	/* LP64 version of struct timespec. time_t is a long and must grow when
	187	* we're dealing with a 64-bit process.
	188	* WARNING - keep in sync with struct timespec
	189	*/
	190	struct user_timespec {
	191	user_time_t tv_sec; /* seconds */
1c79356b A	192	int32_t tv_nsec; /* and nanoseconds */
1c79356b A	193	};
91447636 A	194
	195	#if __DARWIN_ALIGN_NATURAL
	196	#pragma options align=reset
	197	#endif
	198
	199	#endif // KERNEL
9bccf70c	200	#endif
1c79356b A	201
	202	#define TIMEVAL_TO_TIMESPEC(tv, ts) { \
	203	(ts)->tv_sec = (tv)->tv_sec; \
	204	(ts)->tv_nsec = (tv)->tv_usec * 1000; \
	205	}
	206	#define TIMESPEC_TO_TIMEVAL(tv, ts) { \
	207	(tv)->tv_sec = (ts)->tv_sec; \
	208	(tv)->tv_usec = (ts)->tv_nsec / 1000; \
	209	}
	210
	211	struct timezone {
	212	int tz_minuteswest; /* minutes west of Greenwich */
	213	int tz_dsttime; /* type of dst correction */
	214	};
	215	#define DST_NONE 0 /* not on dst */
	216	#define DST_USA 1 /* USA style dst */
	217	#define DST_AUST 2 /* Australian style dst */
	218	#define DST_WET 3 /* Western European dst */
	219	#define DST_MET 4 /* Middle European dst */
	220	#define DST_EET 5 /* Eastern European dst */
	221	#define DST_CAN 6 /* Canada */
	222
1c79356b A	223	/* Operations on timevals. */
	224	#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
	225	#define timerisset(tvp) ((tvp)->tv_sec \|\| (tvp)->tv_usec)
	226	#define timercmp(tvp, uvp, cmp) \
	227	(((tvp)->tv_sec == (uvp)->tv_sec) ? \
	228	((tvp)->tv_usec cmp (uvp)->tv_usec) : \
	229	((tvp)->tv_sec cmp (uvp)->tv_sec))
	230	#define timeradd(tvp, uvp, vvp) \
	231	do { \
	232	(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
	233	(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
	234	if ((vvp)->tv_usec >= 1000000) { \
	235	(vvp)->tv_sec++; \
	236	(vvp)->tv_usec -= 1000000; \
	237	} \
	238	} while (0)
	239	#define timersub(tvp, uvp, vvp) \
	240	do { \
	241	(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
	242	(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
	243	if ((vvp)->tv_usec < 0) { \
	244	(vvp)->tv_sec--; \
	245	(vvp)->tv_usec += 1000000; \
	246	} \
	247	} while (0)
	248
55e303ae A	249	#define timevalcmp(l, r, cmp) timercmp(l, r, cmp) /* freebsd */
55e303ae A	250
1c79356b A	251	/*
	252	* Getkerninfo clock information structure
	253	*/
	254	struct clockinfo {
	255	int hz; /* clock frequency */
	256	int tick; /* micro-seconds per hz tick */
	257	int tickadj; /* clock skew rate for adjtime() */
	258	int stathz; /* statistics clock frequency */
	259	int profhz; /* profiling clock frequency */
	260	};
91447636	261	#endif /* ! _POSIX_C_SOURCE */
1c79356b	262
1c79356b A	263
1c79356b A	264	#ifdef KERNEL
91447636 A	265
	266	#ifndef _POSIX_C_SOURCE
	267	__BEGIN_DECLS
	268	void microtime(struct timeval *tv);
	269	void microuptime(struct timeval *tv);
9bccf70c A	270	#define getmicrotime(a) microtime(a)
9bccf70c A	271	#define getmicrouptime(a) microuptime(a)
91447636 A	272	void nanotime(struct timespec *ts);
91447636 A	273	void nanouptime(struct timespec *ts);
9bccf70c A	274	#define getnanotime(a) nanotime(a)
9bccf70c A	275	#define getnanouptime(a) nanouptime(a)
91447636 A	276	void timevaladd(struct timeval t1, struct timeval t2);
	277	void timevalsub(struct timeval t1, struct timeval t2);
	278	void timevalfix(struct timeval *t1);
	279	#ifdef BSD_KERNEL_PRIVATE
	280	time_t boottime_sec(void);
	281	void inittodr(time_t base);
	282	int itimerfix(struct timeval *tv);
	283	int itimerdecr(struct itimerval *itp, int usec);
	284	#endif /* BSD_KERNEL_PRIVATE */
	285
	286	__END_DECLS
	287
	288	#endif /* ! _POSIX_C_SOURCE */
9bccf70c	289
1c79356b	290	#else /* !KERNEL */
91447636 A	291
	292	__BEGIN_DECLS
	293
	294	#ifndef _POSIX_C_SOURCE
1c79356b A	295	#include <time.h>
1c79356b A	296
91447636 A	297	int adjtime(const struct timeval , struct timeval );
	298	int futimes(int, const struct timeval *);
	299	int settimeofday(const struct timeval , const struct timezone );
	300	#endif /* ! _POSIX_C_SOURCE */
	301
	302	int getitimer(int, struct itimerval *);
	303	int gettimeofday(struct timeval * __restrict, struct timezone * __restrict);
	304	int select(int, fd_set * __restrict, fd_set * __restrict,
	305	fd_set * __restrict, struct timeval * __restrict);
	306	int setitimer(int, const struct itimerval * __restrict,
	307	struct itimerval * __restrict);
	308	int utimes(const char , const struct timeval );
1c79356b	309
1c79356b	310	__END_DECLS
1c79356b A	311
	312	#endif /* !KERNEL */
	313
	314	#endif /* !_SYS_TIME_H_ */