1 timespec.h

     1 /*-

     2  * Copyright (c) 1982, 1986, 1993

     3  *	The Regents of the University of California.  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  * 4. Neither the name of the University nor the names of its contributors

    14  *    may be used to endorse or promote products derived from this software

    15  *    without specific prior written permission.

    16  *

    17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

    18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

    21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

    22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

    23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

    24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

    25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

    26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

    27  * SUCH DAMAGE.

    28  *

    29  *	@(#)time.h	8.5 (Berkeley) 5/4/95

    30  * from: FreeBSD: src/sys/sys/time.h,v 1.43 2000/03/20 14:09:05 phk Exp

    31  *	$FreeBSD: src/sys/sys/timespec.h,v 1.4 2005/01/07 02:29:24 imp Exp $

    32  */

    33 

    34 /*

    35  * Prerequisites: <sys/cdefs.h>, <sys/_types.h>

    36  */

    37 

    38 #ifndef _SYS_TIMESPEC_H_

    39 #define _SYS_TIMESPEC_H_

    40 

    41 #ifndef _TIME_T_DECLARED

    42 typedef	__time_t	time_t;

    43 #define	_TIME_T_DECLARED

    44 #endif

    45 

    46 struct timespec {

    47 	time_t	tv_sec;		/* seconds */

    48 	long	tv_nsec;	/* and nanoseconds */

    49 };

    50 

    51 #if __BSD_VISIBLE

    52 #define	TIMEVAL_TO_TIMESPEC(tv, ts)					\

    53 	do {								\

    54 		(ts)->tv_sec = (tv)->tv_sec;				\

    55 		(ts)->tv_nsec = (tv)->tv_usec * 1000;			\

    56 	} while (0)

    57 #define	TIMESPEC_TO_TIMEVAL(tv, ts)					\

    58 	do {								\

    59 		(tv)->tv_sec = (ts)->tv_sec;				\

    60 		(tv)->tv_usec = (ts)->tv_nsec / 1000;			\

    61 	} while (0)

    62 

    63 #endif /* __BSD_VISIBLE */

    64 

    65 #endif /* _SYS_TIMESPEC_H_ */