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

/*
 * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_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 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 __attribute((aligned(8)));	/* and nanoseconds */
};

#endif
#endif


#ifdef KERNEL
#ifndef _USERTIMEVAL
#define _USERTIMEVAL

#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
 */

struct user_timeval {
	user_time_t	tv_sec;		/* seconds */
	suseconds_t	tv_usec __attribute((aligned(8)));	/* and microseconds */
};	

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

#endif
#endif // KERNEL


#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	/*
5d5c5d0d A	2	* Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
5d5c5d0d A	3	*
8f6c56a5	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
8f6c56a5 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
8ad349bb	24	* limitations under the License.
8f6c56a5 A	25	*
8f6c56a5 A	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
	29	/*
	30	* Copyright (c) 1982, 1986, 1993
	31	* The Regents of the University of California. All rights reserved.
	32	*
	33	* Redistribution and use in source and binary forms, with or without
	34	* modification, are permitted provided that the following conditions
	35	* are met:
	36	* 1. Redistributions of source code must retain the above copyright
	37	* notice, this list of conditions and the following disclaimer.
	38	* 2. Redistributions in binary form must reproduce the above copyright
	39	* notice, this list of conditions and the following disclaimer in the
	40	* documentation and/or other materials provided with the distribution.
	41	* 3. All advertising materials mentioning features or use of this software
	42	* must display the following acknowledgement:
	43	* This product includes software developed by the University of
	44	* California, Berkeley and its contributors.
	45	* 4. Neither the name of the University nor the names of its contributors
	46	* may be used to endorse or promote products derived from this software
	47	* without specific prior written permission.
	48	*
	49	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	50	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	51	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	52	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	53	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	54	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	55	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	56	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	57	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	58	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	59	* SUCH DAMAGE.
	60	*
	61	* @(#)time.h 8.2 (Berkeley) 7/10/94
	62	*/
	63
	64	#ifndef _SYS_TIME_H_
	65	#define _SYS_TIME_H_
	66
91447636 A	67	#include <sys/cdefs.h>
	68	#include <sys/_types.h>
	69
	70	#ifndef _TIME_T
	71	#define _TIME_T
	72	typedef __darwin_time_t time_t;
	73	#endif
	74
	75	#ifndef _SUSECONDS_T
	76	#define _SUSECONDS_T
	77	typedef __darwin_suseconds_t suseconds_t;
	78	#endif
	79
1c79356b	80
1c79356b A	81	/*
	82	* Structure returned by gettimeofday(2) system call,
	83	* and used in other calls.
	84	*/
91447636 A	85	#ifndef _TIMEVAL
91447636 A	86	#define _TIMEVAL
1c79356b	87	struct timeval {
91447636 A	88	time_t tv_sec; /* seconds */
	89	suseconds_t tv_usec; /* and microseconds */
	90	};
	91	#endif /* _TIMEVAL */
	92
	93	/*
	94	* Structure used as a parameter by getitimer(2) and setitimer(2) system
	95	* calls.
	96	*/
	97	struct itimerval {
	98	struct timeval it_interval; /* timer interval */
	99	struct timeval it_value; /* current value */
1c79356b A	100	};
1c79356b A	101
91447636 A	102	/*
	103	* Names of the interval timers, and structure
	104	* defining a timer setting.
	105	*/
	106	#define ITIMER_REAL 0
	107	#define ITIMER_VIRTUAL 1
	108	#define ITIMER_PROF 2
	109
	110
	111	/*
	112	* [XSI] The fd_set type shall be defined as described in <sys/select.h>.
	113	*
	114	* Note: We use _FD_SET to protect all select related
	115	* types and macros
	116	*/
	117	#ifndef _FD_SET
	118	#define _FD_SET
	119
	120	/*
	121	* Select uses bit masks of file descriptors in longs. These macros
	122	* manipulate such bit fields (the filesystem macros use chars). The
	123	* extra protection here is to permit application redefinition above
	124	* the default size.
	125	*/
	126	#ifndef FD_SETSIZE
	127	#define FD_SETSIZE 1024
	128	#endif
	129
	130	#define __DARWIN_NBBY 8 /* bits in a byte */
	131	#define __DARWIN_NFDBITS (sizeof(__int32_t) * __DARWIN_NBBY) /* bits per mask */
	132	#define __DARWIN_howmany(x, y) (((x) + ((y) - 1)) / (y)) /* # y's == x bits? */
	133
	134	__BEGIN_DECLS
	135	typedef struct fd_set {
	136	__int32_t fds_bits[__DARWIN_howmany(FD_SETSIZE, __DARWIN_NFDBITS)];
	137	} fd_set;
	138	__END_DECLS
	139
	140	#define FD_SET(n, p) ((p)->fds_bits[(n)/__DARWIN_NFDBITS] \|= (1<<((n) % __DARWIN_NFDBITS)))
	141	#define FD_CLR(n, p) ((p)->fds_bits[(n)/__DARWIN_NFDBITS] &= ~(1<<((n) % __DARWIN_NFDBITS)))
	142	#define FD_ISSET(n, p) ((p)->fds_bits[(n)/__DARWIN_NFDBITS] & (1<<((n) % __DARWIN_NFDBITS)))
	143	#if __GNUC__ > 3 \|\| __GNUC__ == 3 && __GNUC_MINOR__ >= 3
	144	/*
	145	* Use the built-in bzero function instead of the library version so that
	146	* we do not pollute the namespace or introduce prototype warnings.
	147	*/
	148	#define FD_ZERO(p) __builtin_bzero(p, sizeof(*(p)))
	149	#else
	150	#define FD_ZERO(p) bzero(p, sizeof(*(p)))
	151	#endif
	152	#ifndef _POSIX_C_SOURCE
	153	#define FD_COPY(f, t) bcopy(f, t, sizeof(*(f)))
	154	#endif /* !_POSIX_C_SOURCE */
	155
	156	#endif /* !_FD_SET */
	157
	158
	159	#ifndef _POSIX_C_SOURCE
1c79356b A	160	/*
	161	* Structure defined by POSIX.4 to be like a timeval.
	162	*/
91447636 A	163	#ifndef _TIMESPEC
91447636 A	164	#define _TIMESPEC
1c79356b A	165	struct timespec {
1c79356b A	166	time_t tv_sec; /* seconds */
91447636 A	167	long tv_nsec; /* and nanoseconds */
	168	};
	169
	170	#ifdef KERNEL
	171	// LP64todo - should this move?
	172	#include <machine/types.h> /* user_time_t */
	173
89b3af67	174	/* LP64 version of struct timespec. time_t is a long and must grow when
5d5c5d0d	175	* we're dealing with a 64-bit process.
89b3af67	176	* WARNING - keep in sync with struct timespec
5d5c5d0d	177	*/
89b3af67 A	178	struct user_timespec {
	179	user_time_t tv_sec; /* seconds */
	180	int32_t tv_nsec __attribute((aligned(8))); /* and nanoseconds */
	181	};
	182
	183	#endif
8f6c56a5	184	#endif
5d5c5d0d	185
89b3af67 A	186
	187	#ifdef KERNEL
	188	#ifndef _USERTIMEVAL
	189	#define _USERTIMEVAL
	190
	191	#include <machine/types.h> /* user_time_t */
	192	/*
	193	* LP64 version of struct timeval. time_t is a long and must grow when
	194	* we're dealing with a 64-bit process.
	195	* WARNING - keep in sync with struct timeval
	196	*/
	197
91447636 A	198	struct user_timeval {
91447636 A	199	user_time_t tv_sec; /* seconds */
89b3af67	200	suseconds_t tv_usec __attribute((aligned(8))); /* and microseconds */
91447636 A	201	};
	202
	203	struct user_itimerval {
	204	struct user_timeval it_interval; /* timer interval */
	205	struct user_timeval it_value; /* current value */
	206	};
	207
91447636	208	#endif
8f6c56a5	209	#endif // KERNEL
89b3af67	210
1c79356b A	211
	212	#define TIMEVAL_TO_TIMESPEC(tv, ts) { \
	213	(ts)->tv_sec = (tv)->tv_sec; \
	214	(ts)->tv_nsec = (tv)->tv_usec * 1000; \
	215	}
	216	#define TIMESPEC_TO_TIMEVAL(tv, ts) { \
	217	(tv)->tv_sec = (ts)->tv_sec; \
	218	(tv)->tv_usec = (ts)->tv_nsec / 1000; \
	219	}
	220
	221	struct timezone {
	222	int tz_minuteswest; /* minutes west of Greenwich */
	223	int tz_dsttime; /* type of dst correction */
	224	};
	225	#define DST_NONE 0 /* not on dst */
	226	#define DST_USA 1 /* USA style dst */
	227	#define DST_AUST 2 /* Australian style dst */
	228	#define DST_WET 3 /* Western European dst */
	229	#define DST_MET 4 /* Middle European dst */
	230	#define DST_EET 5 /* Eastern European dst */
	231	#define DST_CAN 6 /* Canada */
	232
1c79356b A	233	/* Operations on timevals. */
	234	#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
	235	#define timerisset(tvp) ((tvp)->tv_sec \|\| (tvp)->tv_usec)
	236	#define timercmp(tvp, uvp, cmp) \
	237	(((tvp)->tv_sec == (uvp)->tv_sec) ? \
	238	((tvp)->tv_usec cmp (uvp)->tv_usec) : \
	239	((tvp)->tv_sec cmp (uvp)->tv_sec))
	240	#define timeradd(tvp, uvp, vvp) \
	241	do { \
	242	(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
	243	(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
	244	if ((vvp)->tv_usec >= 1000000) { \
	245	(vvp)->tv_sec++; \
	246	(vvp)->tv_usec -= 1000000; \
	247	} \
	248	} while (0)
	249	#define timersub(tvp, uvp, vvp) \
	250	do { \
	251	(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
	252	(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
	253	if ((vvp)->tv_usec < 0) { \
	254	(vvp)->tv_sec--; \
	255	(vvp)->tv_usec += 1000000; \
	256	} \
	257	} while (0)
	258
55e303ae A	259	#define timevalcmp(l, r, cmp) timercmp(l, r, cmp) /* freebsd */
55e303ae A	260
1c79356b A	261	/*
	262	* Getkerninfo clock information structure
	263	*/
	264	struct clockinfo {
	265	int hz; /* clock frequency */
	266	int tick; /* micro-seconds per hz tick */
	267	int tickadj; /* clock skew rate for adjtime() */
	268	int stathz; /* statistics clock frequency */
	269	int profhz; /* profiling clock frequency */
	270	};
91447636	271	#endif /* ! _POSIX_C_SOURCE */
1c79356b	272
1c79356b A	273
1c79356b A	274	#ifdef KERNEL
91447636 A	275
	276	#ifndef _POSIX_C_SOURCE
	277	__BEGIN_DECLS
	278	void microtime(struct timeval *tv);
	279	void microuptime(struct timeval *tv);
9bccf70c A	280	#define getmicrotime(a) microtime(a)
9bccf70c A	281	#define getmicrouptime(a) microuptime(a)
91447636 A	282	void nanotime(struct timespec *ts);
91447636 A	283	void nanouptime(struct timespec *ts);
9bccf70c A	284	#define getnanotime(a) nanotime(a)
9bccf70c A	285	#define getnanouptime(a) nanouptime(a)
91447636 A	286	void timevaladd(struct timeval t1, struct timeval t2);
	287	void timevalsub(struct timeval t1, struct timeval t2);
	288	void timevalfix(struct timeval *t1);
	289	#ifdef BSD_KERNEL_PRIVATE
	290	time_t boottime_sec(void);
	291	void inittodr(time_t base);
	292	int itimerfix(struct timeval *tv);
	293	int itimerdecr(struct itimerval *itp, int usec);
	294	#endif /* BSD_KERNEL_PRIVATE */
	295
	296	__END_DECLS
	297
	298	#endif /* ! _POSIX_C_SOURCE */
9bccf70c	299
1c79356b	300	#else /* !KERNEL */
91447636 A	301
	302	__BEGIN_DECLS
	303
	304	#ifndef _POSIX_C_SOURCE
1c79356b A	305	#include <time.h>
1c79356b A	306
91447636 A	307	int adjtime(const struct timeval , struct timeval );
	308	int futimes(int, const struct timeval *);
	309	int settimeofday(const struct timeval , const struct timezone );
	310	#endif /* ! _POSIX_C_SOURCE */
	311
	312	int getitimer(int, struct itimerval *);
	313	int gettimeofday(struct timeval * __restrict, struct timezone * __restrict);
	314	int select(int, fd_set * __restrict, fd_set * __restrict,
	315	fd_set * __restrict, struct timeval * __restrict);
	316	int setitimer(int, const struct itimerval * __restrict,
	317	struct itimerval * __restrict);
	318	int utimes(const char , const struct timeval );
1c79356b	319
1c79356b	320	__END_DECLS
1c79356b A	321
	322	#endif /* !KERNEL */
	323
	324	#endif /* !_SYS_TIME_H_ */