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/* libc/sys/linux/sys/time.h - Time handling */
/* Written 2000 by Werner Almesberger */
/*
* 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
* $FreeBSD: src/sys/sys/time.h,v 1.56 2002/05/05 04:33:09 bde Exp $
*/
#ifndef _SYS_TIME_H
#define _SYS_TIME_H
#include <sys/types.h>
#include <sys/linux_time.h>
/* Macros for converting between `struct timeval' and `struct timespec'. */
# 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; \
}
/* Convenience macros for operations on timevals.
NOTE: `timercmp' does not work for >= or <=. */
# define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
# define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)
# define timercmp(a, b, CMP) \
(((a)->tv_sec == (b)->tv_sec) ? \
((a)->tv_usec CMP (b)->tv_usec) : \
((a)->tv_sec CMP (b)->tv_sec))
# define timeradd(a, b, result) \
do { \
(result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \
(result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \
if ((result)->tv_usec >= 1000000) \
{ \
++(result)->tv_sec; \
(result)->tv_usec -= 1000000; \
} \
} while (0)
# define timersub(a, b, result) \
do { \
(result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
(result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
if ((result)->tv_usec < 0) { \
--(result)->tv_sec; \
(result)->tv_usec += 1000000; \
} \
} while (0)
/* --- redundant stuff below --- */
#include <_ansi.h>
int _EXFUN(gettimeofday, (struct timeval *__p, struct timezone *__z));
int _EXFUN(settimeofday, (const struct timeval *, const struct timezone *));
int _EXFUN(utimes, (const char *__path, const struct timeval __tvp[2]));
int _EXFUN(getitimer, (int __which, struct itimerval *__value));
int _EXFUN(setitimer, (int __which, const struct itimerval *__value,
struct itimerval *__ovalue));
#endif
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