1 /* $NetBSD: time.h,v 1.56 2025/04/21 13:21:33 nia Exp $ */ 2 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 #ifndef _TIME_H_ 40 #define _TIME_H_ 41 42 #include <sys/cdefs.h> 43 #include <sys/featuretest.h> 44 #include <machine/ansi.h> 45 46 #include <sys/null.h> 47 48 #ifdef _BSD_CLOCK_T_ 49 typedef _BSD_CLOCK_T_ clock_t; 50 #undef _BSD_CLOCK_T_ 51 #endif 52 53 #ifdef _BSD_TIME_T_ 54 typedef _BSD_TIME_T_ time_t; 55 #undef _BSD_TIME_T_ 56 #endif 57 58 #ifdef _BSD_SIZE_T_ 59 typedef _BSD_SIZE_T_ size_t; 60 #undef _BSD_SIZE_T_ 61 #endif 62 63 #ifdef _BSD_CLOCKID_T_ 64 typedef _BSD_CLOCKID_T_ clockid_t; 65 #undef _BSD_CLOCKID_T_ 66 #endif 67 68 #ifdef _BSD_TIMER_T_ 69 typedef _BSD_TIMER_T_ timer_t; 70 #undef _BSD_TIMER_T_ 71 #endif 72 73 #define CLOCKS_PER_SEC 100 74 75 struct tm { 76 int tm_sec; /* seconds after the minute [0-60] */ 77 int tm_min; /* minutes after the hour [0-59] */ 78 int tm_hour; /* hours since midnight [0-23] */ 79 int tm_mday; /* day of the month [1-31] */ 80 int tm_mon; /* months since January [0-11] */ 81 int tm_year; /* years since 1900 */ 82 int tm_wday; /* days since Sunday [0-6] */ 83 int tm_yday; /* days since January 1 [0-365] */ 84 int tm_isdst; /* Daylight Saving Time flag */ 85 long tm_gmtoff; /* offset from UTC in seconds */ 86 __aconst char *tm_zone; /* timezone abbreviation */ 87 }; 88 89 __BEGIN_DECLS 90 char *asctime(const struct tm *); 91 clock_t clock(void); 92 #ifndef __LIBC12_SOURCE__ 93 char *ctime(const time_t *) __RENAME(__ctime50); 94 double difftime(time_t, time_t) __RENAME(__difftime50); 95 struct tm *gmtime(const time_t *) __RENAME(__gmtime50); 96 struct tm *localtime(const time_t *) __RENAME(__locatime50); 97 time_t time(time_t *) __RENAME(__time50); 98 time_t mktime(struct tm *) __RENAME(__mktime50); 99 #endif 100 size_t strftime(char * __restrict, size_t, const char * __restrict, 101 const struct tm * __restrict) 102 __attribute__((__format__(__strftime__, 3, 0))); 103 104 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 105 defined(_NETBSD_SOURCE) 106 #ifndef __LIBC12_SOURCE__ 107 /* 108 * CLK_TCK uses libc's internal __sysconf() to retrieve the machine's 109 * HZ. The value of _SC_CLK_TCK is 39 -- we hard code it so we do not 110 * need to include unistd.h 111 */ 112 long __sysconf(int); 113 #define CLK_TCK (__sysconf(39)) 114 #endif 115 #endif 116 117 extern __aconst char *tzname[2]; 118 #ifndef __LIBC12_SOURCE__ 119 void tzset(void) __RENAME(__tzset50); 120 #endif 121 122 /* 123 * X/Open Portability Guide >= Issue 4 124 */ 125 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 126 extern int daylight; 127 #ifndef __LIBC12_SOURCE__ 128 extern long int timezone __RENAME(__timezone13); 129 #endif 130 char *strptime(const char * __restrict, const char * __restrict, 131 struct tm * __restrict); 132 #endif 133 134 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \ 135 defined(_NETBSD_SOURCE) 136 struct tm *getdate(const char *); 137 extern int getdate_err; 138 #endif 139 140 /* ISO/IEC 9899:2011 7.27.1/3 Components of time */ 141 #include <sys/timespec.h> 142 143 #if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \ 144 defined(_NETBSD_SOURCE) 145 #include <sys/time.h> 146 struct sigevent; 147 struct itimerspec; 148 int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *); 149 #ifndef __LIBC12_SOURCE__ 150 int clock_getres(clockid_t, struct timespec *) 151 __RENAME(__clock_getres50); 152 int clock_gettime(clockid_t, struct timespec *) 153 __RENAME(__clock_gettime50); 154 int clock_settime(clockid_t, const struct timespec *) 155 __RENAME(__clock_settime50); 156 int nanosleep(const struct timespec *, struct timespec *) 157 __RENAME(__nanosleep50); 158 int timer_gettime(timer_t, struct itimerspec *) __RENAME(__timer_gettime50); 159 int timer_settime(timer_t, int, const struct itimerspec * __restrict, 160 struct itimerspec * __restrict) __RENAME(__timer_settime50); 161 #endif 162 #ifdef _NETBSD_SOURCE 163 #include <sys/idtype.h> 164 int clock_getcpuclockid2(idtype_t, id_t, clockid_t *); 165 #endif 166 int clock_getcpuclockid(pid_t, clockid_t *); 167 168 int timer_create(clockid_t, struct sigevent * __restrict, 169 timer_t * __restrict); 170 int timer_delete(timer_t); 171 int timer_getoverrun(timer_t); 172 #endif /* _POSIX_C_SOURCE >= 199309 || _XOPEN_SOURCE >= 500 || ... */ 173 174 #if ((_POSIX_C_SOURCE - 0) >= 199506L && (_POSIX_C_SOURCE - 0) < 202405L) || \ 175 (_XOPEN_SOURCE - 0) >= 500 || defined(_REENTRANT) || defined(_NETBSD_SOURCE) 176 char *asctime_r(const struct tm * __restrict, char * __restrict); 177 #ifndef __LIBC12_SOURCE__ 178 char *ctime_r(const time_t *, char *) __RENAME(__ctime_r50); 179 #endif 180 #endif 181 182 #if (_POSIX_C_SOURCE - 0) >= 199506L || \ 183 (_XOPEN_SOURCE - 0) >= 500 || defined(_REENTRANT) || defined(_NETBSD_SOURCE) 184 #ifndef __LIBC12_SOURCE__ 185 struct tm *gmtime_r(const time_t * __restrict, struct tm * __restrict) 186 __RENAME(__gmtime_r50); 187 struct tm *localtime_r(const time_t * __restrict, struct tm * __restrict) 188 __RENAME(__localtime_r50); 189 #endif 190 #endif 191 192 #if (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE) 193 # ifndef __LOCALE_T_DECLARED 194 typedef struct _locale *locale_t; 195 # define __LOCALE_T_DECLARED 196 # endif 197 size_t strftime_l(char * __restrict, size_t, const char * __restrict, 198 const struct tm * __restrict, locale_t) 199 __attribute__((__format__(__strftime__, 3, 0))); 200 #endif 201 202 #if (__STDC_VERSION__ - 0 >= 202311L) || defined(_ISOC23_SOURCE) || \ 203 defined(_NETBSD_SOURCE) 204 #ifndef __LIBC12_SOURCE__ 205 time_t timegm(struct tm *) __RENAME(__timegm50); 206 #endif 207 #endif 208 209 #if defined(_NETBSD_SOURCE) 210 typedef struct __state *timezone_t; 211 212 #ifndef __LIBC12_SOURCE__ 213 time_t time2posix(time_t) __RENAME(__time2posix50); 214 time_t posix2time(time_t) __RENAME(__posix2time50); 215 time_t timeoff(struct tm *, long) __RENAME(__timeoff50); 216 time_t timelocal(struct tm *) __RENAME(__timelocal50); 217 struct tm *offtime(const time_t *, long) __RENAME(__offtime50); 218 void tzsetwall(void) __RENAME(__tzsetwall50); 219 220 struct tm *offtime_r(const time_t *, long, struct tm *) __RENAME(__offtime_r50); 221 struct tm *localtime_rz(timezone_t __restrict, const time_t * __restrict, 222 struct tm * __restrict) __RENAME(__localtime_rz50); 223 char *ctime_rz(timezone_t __restrict, const time_t *, char *) 224 __RENAME(__ctime_rz50); 225 time_t mktime_z(timezone_t __restrict, struct tm * __restrict) 226 __RENAME(__mktime_z50); 227 time_t timelocal_z(timezone_t __restrict, struct tm *) 228 __RENAME(__timelocal_z50); 229 time_t time2posix_z(timezone_t __restrict, time_t) __RENAME(__time2posix_z50); 230 time_t posix2time_z(timezone_t __restrict, time_t) __RENAME(__posix2time_z50); 231 timezone_t tzalloc(const char *) __RENAME(__tzalloc50); 232 void tzfree(timezone_t __restrict) __RENAME(__tzfree50); 233 const char *tzgetname(timezone_t __restrict, int) __RENAME(__tzgetname50); 234 long tzgetgmtoff(timezone_t __restrict, int) __RENAME(__tzgetgmtoff50); 235 #endif 236 237 size_t strftime_lz(timezone_t __restrict, char * __restrict, size_t, 238 const char * __restrict, const struct tm * __restrict, locale_t) 239 __attribute__((__format__(__strftime__, 4, 0))); 240 size_t strftime_z(timezone_t __restrict, char * __restrict, size_t, 241 const char * __restrict, const struct tm * __restrict) 242 __attribute__((__format__(__strftime__, 4, 0))); 243 char *strptime_l(const char * __restrict, const char * __restrict, 244 struct tm * __restrict, locale_t); 245 246 #endif /* _NETBSD_SOURCE */ 247 248 /* ISO/IEC 9899:2011 7.27.2.5 The timespec_get function */ 249 #if defined(_ISOC11_SOURCE) || (__STDC_VERSION__ - 0) >= 201101L || \ 250 defined(_NETBSD_SOURCE) || (__cplusplus - 0) >= 201103L || \ 251 (_POSIX_C_SOURCE - 0) >= 202405L 252 253 #define TIME_UTC 1 /* time elapsed since epoch */ 254 #if (__STDC_VERSION__ - 0 >= 202311L) || defined(_ISOC23_SOURCE) || \ 255 defined(_NETBSD_SOURCE) 256 #define TIME_MONOTONIC 2 257 #endif 258 259 int timespec_get(struct timespec *ts, int base); 260 #if (__STDC_VERSION__ - 0 >= 202311L) || defined(_ISOC23_SOURCE) || \ 261 defined(_NETBSD_SOURCE) 262 int timespec_getres(struct timespec *ts, int base); 263 #endif 264 #endif 265 266 __END_DECLS 267 268 #endif /* !_TIME_H_ */ 269