1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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 37 #ifndef _TIME_H_ 38 #define _TIME_H_ 39 40 #define __STDC_VERSION_TIME_H__ 202311L 41 42 #include <sys/cdefs.h> 43 #include <sys/_null.h> 44 #include <sys/_types.h> 45 #include <sys/_clock_id.h> 46 47 #if __POSIX_VISIBLE > 0 && __POSIX_VISIBLE < 200112 || __BSD_VISIBLE 48 /* 49 * Frequency of the clock ticks reported by times(). Deprecated - use 50 * sysconf(_SC_CLK_TCK) instead. (Removed in 1003.1-2001.) 51 */ 52 #define CLK_TCK 128 53 #endif 54 55 /* Frequency of the clock ticks reported by clock(). */ 56 #define CLOCKS_PER_SEC 128 57 58 #ifndef _CLOCK_T_DECLARED 59 typedef __clock_t clock_t; 60 #define _CLOCK_T_DECLARED 61 #endif 62 63 #ifndef _TIME_T_DECLARED 64 typedef __time_t time_t; 65 #define _TIME_T_DECLARED 66 #endif 67 68 #ifndef _SIZE_T_DECLARED 69 typedef __size_t size_t; 70 #define _SIZE_T_DECLARED 71 #endif 72 73 #if __POSIX_VISIBLE >= 199309 74 /* 75 * New in POSIX 1003.1b-1993. 76 */ 77 #ifndef _CLOCKID_T_DECLARED 78 typedef __clockid_t clockid_t; 79 #define _CLOCKID_T_DECLARED 80 #endif 81 82 #ifndef _TIMER_T_DECLARED 83 typedef __timer_t timer_t; 84 #define _TIMER_T_DECLARED 85 #endif 86 87 #include <sys/timespec.h> 88 #endif /* __POSIX_VISIBLE >= 199309 */ 89 90 #if __POSIX_VISIBLE >= 200112 91 #ifndef _PID_T_DECLARED 92 typedef __pid_t pid_t; 93 #define _PID_T_DECLARED 94 #endif 95 #endif 96 97 struct tm { 98 int tm_sec; /* seconds after the minute [0-60] */ 99 int tm_min; /* minutes after the hour [0-59] */ 100 int tm_hour; /* hours since midnight [0-23] */ 101 int tm_mday; /* day of the month [1-31] */ 102 int tm_mon; /* months since January [0-11] */ 103 int tm_year; /* years since 1900 */ 104 int tm_wday; /* days since Sunday [0-6] */ 105 int tm_yday; /* days since January 1 [0-365] */ 106 int tm_isdst; /* Daylight Savings Time flag */ 107 long tm_gmtoff; /* offset from UTC in seconds */ 108 char *tm_zone; /* timezone abbreviation */ 109 }; 110 111 #if __POSIX_VISIBLE 112 extern char *tzname[]; 113 #endif 114 115 __BEGIN_DECLS 116 char *asctime(const struct tm *); 117 clock_t clock(void); 118 char *ctime(const time_t *); 119 #ifndef _STANDALONE 120 double difftime(time_t, time_t); 121 #endif 122 /* XXX missing: getdate() */ 123 struct tm *gmtime(const time_t *); 124 struct tm *localtime(const time_t *); 125 time_t mktime(struct tm *); 126 size_t strftime(char * __restrict, size_t, const char * __restrict, 127 const struct tm * __restrict); 128 time_t time(time_t *); 129 #if __POSIX_VISIBLE >= 200112 130 struct sigevent; 131 int timer_create(clockid_t, struct sigevent *__restrict, timer_t *__restrict); 132 int timer_delete(timer_t); 133 int timer_gettime(timer_t, struct itimerspec *); 134 int timer_getoverrun(timer_t); 135 int timer_settime(timer_t, int, const struct itimerspec *__restrict, 136 struct itimerspec *__restrict); 137 #endif 138 #if __POSIX_VISIBLE 139 void tzset(void); 140 #endif 141 142 #if __POSIX_VISIBLE >= 199309 143 int clock_getres(clockid_t, struct timespec *); 144 int clock_gettime(clockid_t, struct timespec *); 145 int clock_settime(clockid_t, const struct timespec *); 146 int nanosleep(const struct timespec *, struct timespec *); 147 #endif /* __POSIX_VISIBLE >= 199309 */ 148 149 #if __POSIX_VISIBLE >= 200112 150 int clock_getcpuclockid(pid_t, clockid_t *); 151 int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *); 152 #endif 153 154 #if __POSIX_VISIBLE >= 199506 155 char *asctime_r(const struct tm *, char *); 156 char *ctime_r(const time_t *, char *); 157 #endif 158 #if __POSIX_VISIBLE >= 199506 || __ISO_C_VISIBLE >= 2023 159 struct tm *gmtime_r(const time_t *, struct tm *); 160 struct tm *localtime_r(const time_t *, struct tm *); 161 #endif 162 163 #if __XSI_VISIBLE 164 char *strptime(const char * __restrict, const char * __restrict, 165 struct tm * __restrict); 166 extern long timezone; 167 extern int daylight; 168 #endif 169 170 #if __BSD_VISIBLE 171 time_t timelocal(struct tm * const); 172 int timer_oshandle_np(timer_t timerid); 173 time_t time2posix(time_t t); 174 time_t posix2time(time_t t); 175 struct tm *offtime(const time_t *, long); 176 struct tm *offtime_r(const time_t *__restrict, long, struct tm *__restrict); 177 #endif /* __BSD_VISIBLE */ 178 179 #if __POSIX_VISIBLE >= 200809 || defined(_XLOCALE_H_) 180 #include <xlocale/_time.h> 181 #endif 182 183 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 2011 || \ 184 (defined(__cplusplus) && __cplusplus >= 201703) 185 #include <sys/_timespec.h> 186 /* ISO/IEC 9899:2011 7.27.2.5 The timespec_get function */ 187 #define TIME_UTC 1 /* time elapsed since epoch */ 188 int timespec_get(struct timespec *ts, int base); 189 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 2023 190 /* ISO/IEC 9899:2024 7.29.1 Components of time */ 191 #define TIME_MONOTONIC 2 /* monotonic time */ 192 /* ISO/IEC 9899:2024 7.29.2.7 The timespec_getres function */ 193 int timespec_getres(struct timespec *, int); 194 time_t timegm(struct tm * const); 195 #endif 196 #endif 197 198 __END_DECLS 199 200 #endif /* !_TIME_H_ */ 201