The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/timespec.h

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    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  *      $FreeBSD$
   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_ */

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