include/time.h

   1 /*
   2  * Copyright (c) 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  * (c) UNIX System Laboratories, Inc.
   5  * All or some portions of this file are derived from material licensed
   6  * to the University of California by American Telephone and Telegraph
   7  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
   8  * the permission of UNIX System Laboratories, Inc.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  *
  38  *      @(#)time.h      8.3 (Berkeley) 1/21/94
  39  */
  40
  41 #ifndef _TIME_H_
  42 #define _TIME_H_
  43
  44 #include <sys/cdefs.h>
  45
  46 #include <machine/stdint.h>
  47 #include <sys/_posix.h>
  48
  49 #if __POSIX_VISIBLE > 0 && __POSIX_VISIBLE < 200112 || __BSD_VISIBLE
  50 /*
  51  * Frequency of the clock ticks reported by times().  Deprecated - use
  52  * sysconf(_SC_CLK_TCK) instead.  (Removed in 1003.1-2001.)
  53  */
  54 #define CLK_TCK         128
  55 #endif
  56
  57 /* Frequency of the clock ticks reported by clock().  */
  58 #define CLOCKS_PER_SEC  128
  59
  60 #include <sys/_null.h>
  61
  62 #ifndef _CLOCK_T_DECLARED
  63 #define _CLOCK_T_DECLARED
  64 typedef __clock_t       clock_t;
  65 #endif
  66
  67 #ifndef _TIME_T_DECLARED
  68 #define _TIME_T_DECLARED
  69 typedef __time_t        time_t;
  70 #endif
  71
  72 #ifndef _SIZE_T_DECLARED
  73 #define _SIZE_T_DECLARED
  74 typedef __size_t        size_t;
  75 #endif
  76
  77 #if __POSIX_VISIBLE >= 199309
  78 /*
  79  * New in POSIX 1003.1b-1993.
  80  */
  81 #ifndef _CLOCKID_T_DECLARED
  82 #define _CLOCKID_T_DECLARED
  83 typedef __clockid_t     clockid_t;
  84 #endif
  85
  86 #ifndef _TIMER_T_DECLARED
  87 #define _TIMER_T_DECLARED
  88 typedef __timer_t       timer_t;
  89 #endif
  90
  91 #include <sys/_timespec.h>
  92
  93 #endif /* __POSIX_VISIBLE >= 199309 */
  94
  95 /* These macros are also in sys/time.h. */
  96 #if !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 200112
  97 #define CLOCK_REALTIME          0
  98 #ifdef __BSD_VISIBLE
  99 #define CLOCK_VIRTUAL           1
 100 #define CLOCK_PROF              2
 101 #endif
 102 #define CLOCK_MONOTONIC         4       /* from freebsd */
 103 #define CLOCK_UPTIME            5       /* from freebsd */
 104 #define CLOCK_UPTIME_PRECISE    7       /* from freebsd */
 105 #define CLOCK_UPTIME_FAST       8       /* from freebsd */
 106 #define CLOCK_REALTIME_PRECISE  9       /* from freebsd */
 107 #define CLOCK_REALTIME_FAST     10      /* from freebsd */
 108 #define CLOCK_MONOTONIC_PRECISE 11      /* from freebsd */
 109 #define CLOCK_MONOTONIC_FAST    12      /* from freebsd */
 110 #define CLOCK_SECOND            13      /* from freebsd */
 111 #define CLOCK_THREAD_CPUTIME_ID         14
 112 #define CLOCK_PROCESS_CPUTIME_ID        15
 113
 114 #endif /* !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 200112 */
 115
 116 #if !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 200112
 117 #if __BSD_VISIBLE
 118 #define TIMER_RELTIME   0x0     /* relative timer */
 119 #endif
 120 #define TIMER_ABSTIME   0x1     /* absolute timer */
 121 #endif
 122
 123 struct tm {
 124         int     tm_sec;         /* seconds after the minute [0-60] */
 125         int     tm_min;         /* minutes after the hour [0-59] */
 126         int     tm_hour;        /* hours since midnight [0-23] */
 127         int     tm_mday;        /* day of the month [1-31] */
 128         int     tm_mon;         /* months since January [0-11] */
 129         int     tm_year;        /* years since 1900 */
 130         int     tm_wday;        /* days since Sunday [0-6] */
 131         int     tm_yday;        /* days since January 1 [0-365] */
 132         int     tm_isdst;       /* Daylight Savings Time flag */
 133         long    tm_gmtoff;      /* offset from CUT in seconds */
 134         char    *tm_zone;       /* timezone abbreviation */
 135 };
 136
 137 #if __POSIX_VISIBLE
 138 extern char *tzname[];
 139 #endif
 140
 141 __BEGIN_DECLS
 142 char *asctime (const struct tm *);
 143 clock_t clock (void);
 144 char *ctime (const time_t *);
 145 double difftime (time_t, time_t);
 146 struct tm *gmtime (const time_t *);
 147 struct tm *localtime (const time_t *);
 148 time_t mktime (struct tm *);
 149 size_t strftime (char * __restrict, size_t, const char * __restrict,
 150                  const struct tm * __restrict);
 151 time_t time (time_t *);
 152
 153 #if __POSIX_VISIBLE
 154 void tzset (void);
 155 #endif
 156
 157 #if __POSIX_VISIBLE >= 199506
 158 char *asctime_r (const struct tm *, char *);
 159 char *ctime_r (const time_t *, char *);
 160 struct tm *gmtime_r (const time_t *, struct tm *);
 161 struct tm *localtime_r (const time_t *, struct tm *);
 162 #endif
 163
 164 #if __POSIX_VISIBLE >= 199309
 165 /* Introduced in POSIX 1003.1b-1993, not part of 1003.1-1990. */
 166 int clock_getres (clockid_t, struct timespec *);
 167 int clock_gettime (clockid_t, struct timespec *);
 168 int clock_settime (clockid_t, const struct timespec *);
 169 int nanosleep (const struct timespec *, struct timespec *);
 170 #endif /* __POSIX_VISIBLE >= 199309 */
 171
 172 #if __XSI_VISIBLE
 173 extern int daylight;
 174 extern long timezone;
 175 char *strptime (const char * __restrict, const char * __restrict,
 176                 struct tm * __restrict);
 177 #endif
 178
 179 #if __BSD_VISIBLE
 180 void tzsetwall (void);
 181 time_t timelocal (struct tm * const);
 182 time_t timegm (struct tm * const);
 183 #endif /* __BSD_VISIBLE */
 184 __END_DECLS
 185
 186 #endif /* !_TIME_H_ */