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 #include <sys/cdefs.h> 41 #include <sys/_null.h> 42 #include <sys/_types.h> 43 #include <sys/_clock_id.h> 44 45 #if __ISO_C_VISIBLE >= 2023 || __BSD_VISIBLE 46 #define __STDC_VERSION_TIME_H__ 202311L 47 #endif 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 #ifndef _CLOCK_T_DECLARED 61 typedef __clock_t clock_t; 62 #define _CLOCK_T_DECLARED 63 #endif 64 65 #ifndef _TIME_T_DECLARED 66 typedef __time_t time_t; 67 #define _TIME_T_DECLARED 68 #endif 69 70 #ifndef _SIZE_T_DECLARED 71 typedef __size_t size_t; 72 #define _SIZE_T_DECLARED 73 #endif 74 75 #if __POSIX_VISIBLE >= 199309 76 /* 77 * New in POSIX 1003.1b-1993. 78 */ 79 #ifndef _CLOCKID_T_DECLARED 80 typedef __clockid_t clockid_t; 81 #define _CLOCKID_T_DECLARED 82 #endif 83 84 #ifndef _TIMER_T_DECLARED 85 typedef __timer_t timer_t; 86 #define _TIMER_T_DECLARED 87 #endif 88 89 #include <sys/timespec.h> 90 #endif /* __POSIX_VISIBLE >= 199309 */ 91 92 #if __POSIX_VISIBLE >= 200112 93 #ifndef _PID_T_DECLARED 94 typedef __pid_t pid_t; 95 #define _PID_T_DECLARED 96 #endif 97 #endif 98 99 struct tm { 100 int tm_sec; /* seconds after the minute [0-60] */ 101 int tm_min; /* minutes after the hour [0-59] */ 102 int tm_hour; /* hours since midnight [0-23] */ 103 int tm_mday; /* day of the month [1-31] */ 104 int tm_mon; /* months since January [0-11] */ 105 int tm_year; /* years since 1900 */ 106 int tm_wday; /* days since Sunday [0-6] */ 107 int tm_yday; /* days since January 1 [0-365] */ 108 int tm_isdst; /* Daylight Savings Time flag */ 109 long tm_gmtoff; /* offset from UTC in seconds */ 110 char *tm_zone; /* timezone abbreviation */ 111 }; 112 113 #if __POSIX_VISIBLE 114 extern char *tzname[]; 115 #endif 116 117 __BEGIN_DECLS 118 char *asctime(const struct tm *); 119 clock_t clock(void); 120 char *ctime(const time_t *); 121 #ifndef _STANDALONE 122 double difftime(time_t, time_t); 123 #endif 124 /* XXX missing: getdate() */ 125 struct tm *gmtime(const time_t *); 126 struct tm *localtime(const time_t *); 127 time_t mktime(struct tm *); 128 size_t strftime(char * __restrict, size_t, const char * __restrict, 129 const struct tm * __restrict); 130 time_t time(time_t *); 131 #if __POSIX_VISIBLE >= 200112 132 struct sigevent; 133 int timer_create(clockid_t, struct sigevent *__restrict, timer_t *__restrict); 134 int timer_delete(timer_t); 135 int timer_gettime(timer_t, struct itimerspec *); 136 int timer_getoverrun(timer_t); 137 int timer_settime(timer_t, int, const struct itimerspec *__restrict, 138 struct itimerspec *__restrict); 139 #endif 140 #if __POSIX_VISIBLE 141 void tzset(void); 142 #endif 143 144 #if __POSIX_VISIBLE >= 199309 145 int clock_getres(clockid_t, struct timespec *); 146 int clock_gettime(clockid_t, struct timespec *); 147 int clock_settime(clockid_t, const struct timespec *); 148 int nanosleep(const struct timespec *, struct timespec *); 149 #endif /* __POSIX_VISIBLE >= 199309 */ 150 151 #if __POSIX_VISIBLE >= 200112 152 int clock_getcpuclockid(pid_t, clockid_t *); 153 int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *); 154 #endif 155 156 #if __POSIX_VISIBLE >= 199506 157 char *asctime_r(const struct tm *, char *); 158 char *ctime_r(const time_t *, char *); 159 #endif 160 #if __POSIX_VISIBLE >= 199506 || __ISO_C_VISIBLE >= 2023 161 struct tm *gmtime_r(const time_t *, struct tm *); 162 struct tm *localtime_r(const time_t *, struct tm *); 163 #endif 164 165 #if __XSI_VISIBLE 166 char *strptime(const char * __restrict, const char * __restrict, 167 struct tm * __restrict); 168 extern long timezone; 169 extern int daylight; 170 #endif 171 172 #if __BSD_VISIBLE 173 time_t timelocal(struct tm * const); 174 int timer_oshandle_np(timer_t timerid); 175 time_t time2posix(time_t t); 176 time_t posix2time(time_t t); 177 struct tm *offtime(const time_t *, long); 178 struct tm *offtime_r(const time_t *__restrict, long, struct tm *__restrict); 179 #endif /* __BSD_VISIBLE */ 180 181 #if __POSIX_VISIBLE >= 200809 || defined(_XLOCALE_H_) 182 #include <xlocale/_time.h> 183 #endif 184 185 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 2011 || \ 186 (defined(__cplusplus) && __cplusplus >= 201703) 187 #include <sys/_timespec.h> 188 /* ISO/IEC 9899:2011 7.27.2.5 The timespec_get function */ 189 #define TIME_UTC 1 /* time elapsed since epoch */ 190 int timespec_get(struct timespec *ts, int base); 191 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 2023 192 /* ISO/IEC 9899:2024 7.29.1 Components of time */ 193 #define TIME_MONOTONIC 2 /* monotonic time */ 194 /* ISO/IEC 9899:2024 7.29.2.7 The timespec_getres function */ 195 int timespec_getres(struct timespec *, int); 196 time_t timegm(struct tm * const); 197 #endif 198 #endif 199 200 __END_DECLS 201 202 #endif /* !_TIME_H_ */ 203