include/time.h

   1 /*      $NetBSD: time.h,v 1.38 2009/01/11 03:04:12 christos Exp $       */
   2
   3 /*
   4  * Copyright (c) 1989, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  * (c) UNIX System Laboratories, Inc.
   7  * All or some portions of this file are derived from material licensed
   8  * to the University of California by American Telephone and Telegraph
   9  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  10  * the permission of UNIX System Laboratories, Inc.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *      @(#)time.h      8.3 (Berkeley) 1/21/94
  37  */
  38
  39 #ifndef _TIME_H_
  40 #define _TIME_H_
  41
  42 #include <sys/cdefs.h>
  43 #include <sys/featuretest.h>
  44 #include <machine/ansi.h>
  45
  46 #include <sys/null.h>
  47
  48 #ifdef  _BSD_CLOCK_T_
  49 typedef _BSD_CLOCK_T_   clock_t;
  50 #undef  _BSD_CLOCK_T_
  51 #endif
  52
  53 #ifdef  _BSD_TIME_T_
  54 typedef _BSD_TIME_T_    time_t;
  55 #undef  _BSD_TIME_T_
  56 #endif
  57
  58 #ifdef  _BSD_SIZE_T_
  59 typedef _BSD_SIZE_T_    size_t;
  60 #undef  _BSD_SIZE_T_
  61 #endif
  62
  63 #ifdef  _BSD_CLOCKID_T_
  64 typedef _BSD_CLOCKID_T_ clockid_t;
  65 #undef  _BSD_CLOCKID_T_
  66 #endif
  67
  68 #ifdef  _BSD_TIMER_T_
  69 typedef _BSD_TIMER_T_   timer_t;
  70 #undef  _BSD_TIMER_T_
  71 #endif
  72
  73 #define CLOCKS_PER_SEC  100
  74
  75 struct tm {
  76         int     tm_sec;         /* seconds after the minute [0-61] */
  77         int     tm_min;         /* minutes after the hour [0-59] */
  78         int     tm_hour;        /* hours since midnight [0-23] */
  79         int     tm_mday;        /* day of the month [1-31] */
  80         int     tm_mon;         /* months since January [0-11] */
  81         int     tm_year;        /* years since 1900 */
  82         int     tm_wday;        /* days since Sunday [0-6] */
  83         int     tm_yday;        /* days since January 1 [0-365] */
  84         int     tm_isdst;       /* Daylight Savings Time flag */
  85         long    tm_gmtoff;      /* offset from UTC in seconds */
  86         __aconst char *tm_zone; /* timezone abbreviation */
  87 };
  88
  89 __BEGIN_DECLS
  90 char *asctime(const struct tm *);
  91 clock_t clock(void);
  92 #ifndef __LIBC12_SOURCE__
  93 char *ctime(const time_t *) __RENAME(__ctime50);
  94 double difftime(time_t, time_t) __RENAME(__difftime50);
  95 struct tm *gmtime(const time_t *) __RENAME(__gmtime50);
  96 struct tm *localtime(const time_t *) __RENAME(__locatime50);
  97 time_t time(time_t *) __RENAME(__time50);
  98 time_t mktime(struct tm *) __RENAME(__mktime50);
  99 #endif
 100 size_t strftime(char * __restrict, size_t, const char * __restrict,
 101     const struct tm * __restrict)
 102     __attribute__((__format__(__strftime__, 3, 0)));
 103
 104 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
 105     defined(_NETBSD_SOURCE)
 106 #ifndef __LIBC12_SOURCE__
 107 /*
 108  * CLK_TCK uses libc's internal __sysconf() to retrieve the machine's
 109  * HZ. The value of _SC_CLK_TCK is 39 -- we hard code it so we do not
 110  * need to include unistd.h
 111  */
 112 long __sysconf(int);
 113 #define CLK_TCK         (__sysconf(39))
 114 #endif
 115 #endif
 116
 117 extern __aconst char *tzname[2];
 118 #ifndef __LIBC12_SOURCE__
 119 void tzset(void) __RENAME(__tzset50);
 120 #endif
 121
 122 /*
 123  * X/Open Portability Guide >= Issue 4
 124  */
 125 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
 126 extern int daylight;
 127 #ifndef __LIBC12_SOURCE__
 128 extern long int timezone __RENAME(__timezone13);
 129 #endif
 130 char *strptime(const char * __restrict, const char * __restrict,
 131     struct tm * __restrict);
 132 #endif
 133
 134 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
 135     defined(_NETBSD_SOURCE)
 136 struct tm *getdate(const char *);
 137 extern int getdate_err;
 138 #endif
 139
 140 #if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
 141     defined(_NETBSD_SOURCE)
 142 #include <sys/time.h>           /* XXX for struct timespec */
 143 struct sigevent;
 144 struct itimerspec;
 145 #ifndef __LIBC12_SOURCE__
 146 int clock_getres(clockid_t, struct timespec *)
 147     __RENAME(__clock_getres50);
 148 int clock_gettime(clockid_t, struct timespec *)
 149     __RENAME(__clock_gettime50);
 150 int clock_settime(clockid_t, const struct timespec *)
 151     __RENAME(__clock_settime50);
 152 int nanosleep(const struct timespec *, struct timespec *)
 153     __RENAME(__nanosleep50);
 154 int timer_gettime(timer_t, struct itimerspec *) __RENAME(__timer_gettime50);
 155 int timer_settime(timer_t, int, const struct itimerspec * __restrict,
 156     struct itimerspec * __restrict) __RENAME(__timer_settime50);
 157 #endif
 158 int timer_create(clockid_t, struct sigevent * __restrict,
 159     timer_t * __restrict);
 160 int timer_delete(timer_t);
 161 int timer_getoverrun(timer_t);
 162 #endif /* _POSIX_C_SOURCE >= 199309 || _XOPEN_SOURCE >= 500 || ... */
 163
 164 #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
 165     defined(_REENTRANT) || defined(_NETBSD_SOURCE)
 166 char *asctime_r(const struct tm * __restrict, char * __restrict);
 167 #ifndef __LIBC12_SOURCE__
 168 char *ctime_r(const time_t *, char *) __RENAME(__ctime_r50);
 169 struct tm *gmtime_r(const time_t * __restrict, struct tm * __restrict)
 170     __RENAME(__gmtime_r50);
 171 struct tm *localtime_r(const time_t * __restrict, struct tm * __restrict)
 172     __RENAME(__localtime_r50);
 173 #endif
 174 #endif
 175
 176 #if defined(_NETBSD_SOURCE)
 177 #ifndef __LIBC12_SOURCE__
 178 time_t time2posix(time_t) __RENAME(__time2posix50);
 179 time_t posix2time(time_t) __RENAME(__posix2time50);
 180 time_t timegm(struct tm *) __RENAME(__timegm50);
 181 time_t timeoff(struct tm *, long) __RENAME(__timeoff50);
 182 time_t timelocal(struct tm *) __RENAME(__timelocal50);
 183 struct tm *offtime(const time_t *, long) __RENAME(__offtime50);
 184 #endif
 185 #ifndef __LIBC12_SOURCE__
 186 void tzsetwall(void) __RENAME(__tzsetwall50);
 187 #endif
 188 #endif /* _NETBSD_SOURCE */
 189
 190 __END_DECLS
 191
 192 #endif /* !_TIME_H_ */