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 * @(#)time.h 8.3 (Berkeley) 1/21/94 37 */ 38 39 /* 40 */ 41 42 #ifndef _TIME_H_ 43 #define _TIME_H_ 44 45 #include <sys/cdefs.h> 46 #include <sys/_null.h> 47 #include <sys/_types.h> 48 #include <sys/_clock_id.h> 49 50 #if __POSIX_VISIBLE > 0 && __POSIX_VISIBLE < 200112 || __BSD_VISIBLE 51 /* 52 * Frequency of the clock ticks reported by times(). Deprecated - use 53 * sysconf(_SC_CLK_TCK) instead. (Removed in 1003.1-2001.) 54 */ 55 #define CLK_TCK 128 56 #endif 57 58 /* Frequency of the clock ticks reported by clock(). */ 59 #define CLOCKS_PER_SEC 128 60 61 #ifndef _CLOCK_T_DECLARED 62 typedef __clock_t clock_t; 63 #define _CLOCK_T_DECLARED 64 #endif 65 66 #ifndef _TIME_T_DECLARED 67 typedef __time_t time_t; 68 #define _TIME_T_DECLARED 69 #endif 70 71 #ifndef _SIZE_T_DECLARED 72 typedef __size_t size_t; 73 #define _SIZE_T_DECLARED 74 #endif 75 76 #if __POSIX_VISIBLE >= 199309 77 /* 78 * New in POSIX 1003.1b-1993. 79 */ 80 #ifndef _CLOCKID_T_DECLARED 81 typedef __clockid_t clockid_t; 82 #define _CLOCKID_T_DECLARED 83 #endif 84 85 #ifndef _TIMER_T_DECLARED 86 typedef __timer_t timer_t; 87 #define _TIMER_T_DECLARED 88 #endif 89 90 #include <sys/timespec.h> 91 #endif /* __POSIX_VISIBLE >= 199309 */ 92 93 #if __POSIX_VISIBLE >= 200112 94 #ifndef _PID_T_DECLARED 95 typedef __pid_t pid_t; 96 #define _PID_T_DECLARED 97 #endif 98 #endif 99 100 struct tm { 101 int tm_sec; /* seconds after the minute [0-60] */ 102 int tm_min; /* minutes after the hour [0-59] */ 103 int tm_hour; /* hours since midnight [0-23] */ 104 int tm_mday; /* day of the month [1-31] */ 105 int tm_mon; /* months since January [0-11] */ 106 int tm_year; /* years since 1900 */ 107 int tm_wday; /* days since Sunday [0-6] */ 108 int tm_yday; /* days since January 1 [0-365] */ 109 int tm_isdst; /* Daylight Savings Time flag */ 110 long tm_gmtoff; /* offset from UTC in seconds */ 111 char *tm_zone; /* timezone abbreviation */ 112 }; 113 114 #if __POSIX_VISIBLE 115 extern char *tzname[]; 116 #endif 117 118 __BEGIN_DECLS 119 char *asctime(const struct tm *); 120 clock_t clock(void); 121 char *ctime(const time_t *); 122 #ifndef _STANDALONE 123 double difftime(time_t, time_t); 124 #endif 125 /* XXX missing: getdate() */ 126 struct tm *gmtime(const time_t *); 127 struct tm *localtime(const time_t *); 128 time_t mktime(struct tm *); 129 size_t strftime(char * __restrict, size_t, const char * __restrict, 130 const struct tm * __restrict); 131 time_t time(time_t *); 132 #if __POSIX_VISIBLE >= 200112 133 struct sigevent; 134 int timer_create(clockid_t, struct sigevent *__restrict, timer_t *__restrict); 135 int timer_delete(timer_t); 136 int timer_gettime(timer_t, struct itimerspec *); 137 int timer_getoverrun(timer_t); 138 int timer_settime(timer_t, int, const struct itimerspec *__restrict, 139 struct itimerspec *__restrict); 140 #endif 141 #if __POSIX_VISIBLE 142 void tzset(void); 143 #endif 144 145 #if __POSIX_VISIBLE >= 199309 146 int clock_getres(clockid_t, struct timespec *); 147 int clock_gettime(clockid_t, struct timespec *); 148 int clock_settime(clockid_t, const struct timespec *); 149 int nanosleep(const struct timespec *, struct timespec *); 150 #endif /* __POSIX_VISIBLE >= 199309 */ 151 152 #if __POSIX_VISIBLE >= 200112 153 int clock_getcpuclockid(pid_t, clockid_t *); 154 int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *); 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 __XSI_VISIBLE 165 char *strptime(const char * __restrict, const char * __restrict, 166 struct tm * __restrict); 167 #endif 168 169 #if __BSD_VISIBLE 170 char *timezone(int, int); /* XXX XSI conflict */ 171 time_t timelocal(struct tm * const); 172 time_t timegm(struct tm * const); 173 int timer_oshandle_np(timer_t timerid); 174 time_t time2posix(time_t t); 175 time_t posix2time(time_t t); 176 #endif /* __BSD_VISIBLE */ 177 178 #if __POSIX_VISIBLE >= 200809 || defined(_XLOCALE_H_) 179 #include <xlocale/_time.h> 180 #endif 181 182 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 2011 || \ 183 (defined(__cplusplus) && __cplusplus >= 201703) 184 #include <sys/_timespec.h> 185 /* ISO/IEC 9899:2011 7.27.2.5 The timespec_get function */ 186 #define TIME_UTC 1 /* time elapsed since epoch */ 187 int timespec_get(struct timespec *ts, int base); 188 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 2023 189 /* ISO/IEC 9899:2024 7.29.1 Components of time */ 190 #define TIME_MONOTONIC 2 /* monotonic time */ 191 /* ISO/IEC 9899:2024 7.29.2.7 The timespec_getres function */ 192 int timespec_getres(struct timespec *, int); 193 #endif 194 #endif 195 196 __END_DECLS 197 198 #endif /* !_TIME_H_ */ 199