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