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


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/bsd/sys/time.h

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*
    2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
    3  *
    4  * @APPLE_LICENSE_HEADER_START@
    5  * 
    6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
    7  * 
    8  * This file contains Original Code and/or Modifications of Original Code
    9  * as defined in and that are subject to the Apple Public Source License
   10  * Version 2.0 (the 'License'). You may not use this file except in
   11  * compliance with the License. Please obtain a copy of the License at
   12  * http://www.opensource.apple.com/apsl/ and read it before using this
   13  * file.
   14  * 
   15  * The Original Code and all software distributed under the License are
   16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
   17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
   20  * Please see the License for the specific language governing rights and
   21  * limitations under the License.
   22  * 
   23  * @APPLE_LICENSE_HEADER_END@
   24  */
   25 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
   26 /*
   27  * Copyright (c) 1982, 1986, 1993
   28  *      The Regents of the University of California.  All rights reserved.
   29  *
   30  * Redistribution and use in source and binary forms, with or without
   31  * modification, are permitted provided that the following conditions
   32  * are met:
   33  * 1. Redistributions of source code must retain the above copyright
   34  *    notice, this list of conditions and the following disclaimer.
   35  * 2. Redistributions in binary form must reproduce the above copyright
   36  *    notice, this list of conditions and the following disclaimer in the
   37  *    documentation and/or other materials provided with the distribution.
   38  * 3. All advertising materials mentioning features or use of this software
   39  *    must display the following acknowledgement:
   40  *      This product includes software developed by the University of
   41  *      California, Berkeley and its contributors.
   42  * 4. Neither the name of the University nor the names of its contributors
   43  *    may be used to endorse or promote products derived from this software
   44  *    without specific prior written permission.
   45  *
   46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   56  * SUCH DAMAGE.
   57  *
   58  *      @(#)time.h      8.2 (Berkeley) 7/10/94
   59  */
   60 
   61 #ifndef _SYS_TIME_H_
   62 #define _SYS_TIME_H_
   63 
   64 #include <sys/appleapiopts.h>
   65 #include <sys/types.h>
   66 
   67 /*
   68  * Structure returned by gettimeofday(2) system call,
   69  * and used in other calls.
   70  */
   71 struct timeval {
   72         int32_t tv_sec;         /* seconds */
   73         int32_t tv_usec;        /* and microseconds */
   74 };
   75 
   76 /*
   77  * Structure defined by POSIX.4 to be like a timeval.
   78  */
   79 #ifndef _TIMESPEC_DECLARED
   80 #define _TIMESPEC_DECLARED
   81 struct timespec {
   82         time_t  tv_sec;         /* seconds */
   83         int32_t tv_nsec;        /* and nanoseconds */
   84 };
   85 #endif
   86 
   87 #define TIMEVAL_TO_TIMESPEC(tv, ts) {                                   \
   88         (ts)->tv_sec = (tv)->tv_sec;                                    \
   89         (ts)->tv_nsec = (tv)->tv_usec * 1000;                           \
   90 }
   91 #define TIMESPEC_TO_TIMEVAL(tv, ts) {                                   \
   92         (tv)->tv_sec = (ts)->tv_sec;                                    \
   93         (tv)->tv_usec = (ts)->tv_nsec / 1000;                           \
   94 }
   95 
   96 struct timezone {
   97         int     tz_minuteswest; /* minutes west of Greenwich */
   98         int     tz_dsttime;     /* type of dst correction */
   99 };
  100 #define DST_NONE        0       /* not on dst */
  101 #define DST_USA         1       /* USA style dst */
  102 #define DST_AUST        2       /* Australian style dst */
  103 #define DST_WET         3       /* Western European dst */
  104 #define DST_MET         4       /* Middle European dst */
  105 #define DST_EET         5       /* Eastern European dst */
  106 #define DST_CAN         6       /* Canada */
  107 
  108 #define time_second time.tv_sec
  109 
  110 /* Operations on timevals. */
  111 #define timerclear(tvp)         (tvp)->tv_sec = (tvp)->tv_usec = 0
  112 #define timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
  113 #define timercmp(tvp, uvp, cmp)                                         \
  114         (((tvp)->tv_sec == (uvp)->tv_sec) ?                             \
  115             ((tvp)->tv_usec cmp (uvp)->tv_usec) :                       \
  116             ((tvp)->tv_sec cmp (uvp)->tv_sec))
  117 #define timeradd(tvp, uvp, vvp)                                         \
  118         do {                                                            \
  119                 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;          \
  120                 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;       \
  121                 if ((vvp)->tv_usec >= 1000000) {                        \
  122                         (vvp)->tv_sec++;                                \
  123                         (vvp)->tv_usec -= 1000000;                      \
  124                 }                                                       \
  125         } while (0)
  126 #define timersub(tvp, uvp, vvp)                                         \
  127         do {                                                            \
  128                 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;          \
  129                 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;       \
  130                 if ((vvp)->tv_usec < 0) {                               \
  131                         (vvp)->tv_sec--;                                \
  132                         (vvp)->tv_usec += 1000000;                      \
  133                 }                                                       \
  134         } while (0)
  135 
  136 #define timevalcmp(l, r, cmp)   timercmp(l, r, cmp) /* freebsd */
  137 
  138 /*
  139  * Names of the interval timers, and structure
  140  * defining a timer setting.
  141  */
  142 #define ITIMER_REAL     0
  143 #define ITIMER_VIRTUAL  1
  144 #define ITIMER_PROF     2
  145 
  146 struct  itimerval {
  147         struct  timeval it_interval;    /* timer interval */
  148         struct  timeval it_value;       /* current value */
  149 };
  150 
  151 /*
  152  * Getkerninfo clock information structure
  153  */
  154 struct clockinfo {
  155         int     hz;             /* clock frequency */
  156         int     tick;           /* micro-seconds per hz tick */
  157         int     tickadj;        /* clock skew rate for adjtime() */
  158         int     stathz;         /* statistics clock frequency */
  159         int     profhz;         /* profiling clock frequency */
  160 };
  161 
  162 #include <sys/cdefs.h>
  163 
  164 #ifdef KERNEL
  165 void    microtime __P((struct timeval *tv));
  166 void    microuptime __P((struct timeval *tv));
  167 #define getmicrotime(a)         microtime(a)
  168 #define getmicrouptime(a)       microuptime(a)
  169 void    nanotime __P((struct timespec *ts));
  170 void    nanouptime __P((struct timespec *ts));
  171 #define getnanotime(a)          nanotime(a)
  172 #define getnanouptime(a)        nanouptime(a)
  173 #ifdef __APPLE_API_PRIVATE
  174 int     itimerfix __P((struct timeval *tv));
  175 int     itimerdecr __P((struct itimerval *itp, int usec));
  176 #endif /* __APPLE_API_PRIVATE */
  177 
  178 #else /* !KERNEL */
  179 #include <time.h>
  180 
  181 #ifndef _POSIX_SOURCE
  182 #include <sys/cdefs.h>
  183 
  184 __BEGIN_DECLS
  185 int     adjtime __P((const struct timeval *, struct timeval *));
  186 int     futimes __P((int, const struct timeval *));
  187 int     getitimer __P((int, struct itimerval *));
  188 int     gettimeofday __P((struct timeval *, struct timezone *));
  189 int     setitimer __P((int, const struct itimerval *, struct itimerval *));
  190 int     settimeofday __P((const struct timeval *, const struct timezone *));
  191 int     utimes __P((const char *, const struct timeval *));
  192 __END_DECLS
  193 #endif /* !POSIX */
  194 
  195 #endif /* !KERNEL */
  196 
  197 #endif /* !_SYS_TIME_H_ */

Cache object: 711be025f0245d2dc7f7f3f24e026470


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.