sys/sys/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  * 3. 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: head/sys/sys/timespec.h 205792 2010-03-28 13:13:22Z ed $
  32  */
  33
  34 #ifndef _SYS_TIMESPEC_H_
  35 #define _SYS_TIMESPEC_H_
  36
  37 #include <sys/cdefs.h>
  38 #include <sys/_timespec.h>
  39
  40 #if __BSD_VISIBLE
  41 #define TIMEVAL_TO_TIMESPEC(tv, ts)                                     \
  42         do {                                                            \
  43                 (ts)->tv_sec = (tv)->tv_sec;                            \
  44                 (ts)->tv_nsec = (tv)->tv_usec * 1000;                   \
  45         } while (0)
  46 #define TIMESPEC_TO_TIMEVAL(tv, ts)                                     \
  47         do {                                                            \
  48                 (tv)->tv_sec = (ts)->tv_sec;                            \
  49                 (tv)->tv_usec = (ts)->tv_nsec / 1000;                   \
  50         } while (0)
  51
  52 #endif /* __BSD_VISIBLE */
  53
  54 /*
  55  * Structure defined by POSIX.1b to be like a itimerval, but with
  56  * timespecs. Used in the timer_*() system calls.
  57  */
  58 struct itimerspec {
  59         struct timespec  it_interval;
  60         struct timespec  it_value;
  61 };
  62
  63 #endif /* _SYS_TIMESPEC_H_ */