include/time.h

   1 /*      $OpenBSD: time.h,v 1.25 2013/06/17 19:11:54 guenther Exp $      */
   2 /*      $NetBSD: time.h,v 1.9 1994/10/26 00:56:35 cgd Exp $     */
   3
   4 /*
   5  * Copyright (c) 1989 The Regents of the University of California.
   6  * All rights reserved.
   7  *
   8  * (c) UNIX System Laboratories, Inc.
   9  * All or some portions of this file are derived from material licensed
  10  * to the University of California by American Telephone and Telegraph
  11  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  12  * the permission of UNIX System Laboratories, Inc.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions
  16  * are met:
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in the
  21  *    documentation and/or other materials provided with the distribution.
  22  * 3. 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      5.12 (Berkeley) 3/9/91
  39  */
  40
  41 #ifndef _TIME_H_
  42 #define _TIME_H_
  43
  44 #include <sys/cdefs.h>
  45 #include <sys/_null.h>
  46 #include <sys/_types.h>
  47
  48 #ifndef _CLOCK_T_DEFINED_
  49 #define _CLOCK_T_DEFINED_
  50 typedef __clock_t       clock_t;
  51 #endif
  52
  53 #ifndef _TIME_T_DEFINED_
  54 #define _TIME_T_DEFINED_
  55 typedef __time_t        time_t;
  56 #endif
  57
  58 #ifndef _SIZE_T_DEFINED_
  59 #define _SIZE_T_DEFINED_
  60 typedef __size_t        size_t;
  61 #endif
  62
  63 #if __POSIX_VISIBLE > 0 && __POSIX_VISIBLE < 200112 || __BSD_VISIBLE
  64 /*
  65  * Frequency of the clock ticks reported by times().  Deprecated - use
  66  * sysconf(_SC_CLK_TCK) instead.  (Removed in 1003.1-2001.)
  67  */
  68 #define CLK_TCK         100
  69 #endif
  70
  71 #define CLOCKS_PER_SEC  100     /* frequency of ticks reported by clock().  */
  72
  73 #if __POSIX_VISIBLE >= 199309
  74 #ifndef _TIMESPEC_DECLARED
  75 #define _TIMESPEC_DECLARED
  76 struct timespec {
  77         time_t  tv_sec;         /* seconds */
  78         long    tv_nsec;        /* and nanoseconds */
  79 };
  80 #endif
  81
  82 #include <sys/_time.h>
  83
  84 #ifndef _CLOCKID_T_DEFINED_
  85 #define _CLOCKID_T_DEFINED_
  86 typedef __clockid_t     clockid_t;
  87 #endif
  88
  89 #ifndef _TIMER_T_DEFINED_
  90 #define _TIMER_T_DEFINED_
  91 typedef __timer_t       timer_t;
  92 #endif
  93 #endif
  94
  95 #if __POSIX_VISIBLE >= 200112
  96 #ifndef _PID_T_DEFINED_
  97 #define _PID_T_DEFINED_
  98 typedef __pid_t         pid_t;
  99 #endif
 100 #endif
 101
 102 struct tm {
 103         int     tm_sec;         /* seconds after the minute [0-60] */
 104         int     tm_min;         /* minutes after the hour [0-59] */
 105         int     tm_hour;        /* hours since midnight [0-23] */
 106         int     tm_mday;        /* day of the month [1-31] */
 107         int     tm_mon;         /* months since January [0-11] */
 108         int     tm_year;        /* years since 1900 */
 109         int     tm_wday;        /* days since Sunday [0-6] */
 110         int     tm_yday;        /* days since January 1 [0-365] */
 111         int     tm_isdst;       /* Daylight Saving Time flag */
 112         long    tm_gmtoff;      /* offset from UTC in seconds */
 113         char    *tm_zone;       /* timezone abbreviation */
 114 };
 115
 116 __BEGIN_DECLS
 117 char *asctime(const struct tm *);
 118 clock_t clock(void);
 119 char *ctime(const time_t *);
 120 double difftime(time_t, time_t);
 121 struct tm *gmtime(const time_t *);
 122 struct tm *localtime(const time_t *);
 123 time_t mktime(struct tm *);
 124 size_t strftime(char *__restrict, size_t, const char *__restrict,
 125                 const struct tm *__restrict)
 126                 __attribute__ ((__bounded__(__string__,1,2)));
 127 time_t time(time_t *);
 128
 129 #if __XPG_VISIBLE >= 400
 130 char *strptime(const char *__restrict, const char *__restrict,
 131                 struct tm *__restrict);
 132 #endif
 133
 134 #if __POSIX_VISIBLE >= 199506
 135 char *asctime_r(const struct tm *__restrict, char *__restrict)
 136                 __attribute__ ((__bounded__(__minbytes__,2,26)));
 137 char *ctime_r(const time_t *, char *)
 138                 __attribute__ ((__bounded__(__minbytes__,2,26)));
 139 struct tm *gmtime_r(const time_t *__restrict, struct tm *__restrict);
 140 struct tm *localtime_r(const time_t *__restrict, struct tm *__restrict);
 141 #endif
 142
 143 #if __POSIX_VISIBLE
 144 extern char *tzname[2];
 145 void tzset(void);
 146 #endif
 147
 148 #if __POSIX_VISIBLE >= 199309
 149 int clock_getres(clockid_t, struct timespec *);
 150 int clock_gettime(clockid_t, struct timespec *);
 151 int clock_settime(clockid_t, const struct timespec *);
 152 int nanosleep(const struct timespec *, struct timespec *);
 153 #endif
 154
 155 #if __POSIX_VISIBLE >= 200112
 156 int clock_getcpuclockid(pid_t, clockid_t *);
 157 #endif
 158
 159 #if __BSD_VISIBLE
 160 char *timezone(int, int);
 161 void tzsetwall(void);
 162 time_t timelocal(struct tm *);
 163 time_t timegm(struct tm *);
 164 time_t timeoff(struct tm *, const long);
 165 #endif
 166 __END_DECLS
 167
 168 #endif /* !_TIME_H_ */