1 /* $NetBSD: time.h,v 1.57 2026/05/01 07:19:45 kre 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 /* 90 * This represents the minimum value for how long a timezone abbreviation 91 * name is allowed to be, it is also (if >= 254) the default for the max length 92 * we currently allow (that can be changed by compiling libc(localtime.c) 93 * with -DTZNAME_MAXIMUM=N specifying a value at least this long, no less). 94 * 95 * This one should probably be made less, and localtime then use a longer value 96 * (it will use 254 at least), so this would never need to change in the future. 97 */ 98 #define _TZNAME_MAXIMUM 254 99 100 __BEGIN_DECLS 101 char *asctime(const struct tm *); 102 clock_t clock(void); 103 #ifndef __LIBC12_SOURCE__ 104 char *ctime(const time_t *) __RENAME(__ctime50); 105 double difftime(time_t, time_t) __RENAME(__difftime50); 106 struct tm *gmtime(const time_t *) __RENAME(__gmtime50); 107 struct tm *localtime(const time_t *) __RENAME(__locatime50); 108 time_t time(time_t *) __RENAME(__time50); 109 time_t mktime(struct tm *) __RENAME(__mktime50); 110 #endif 111 size_t strftime(char * __restrict, size_t, const char * __restrict, 112 const struct tm * __restrict) 113 __attribute__((__format__(__strftime__, 3, 0))); 114 115 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 116 defined(_NETBSD_SOURCE) 117 #ifndef __LIBC12_SOURCE__ 118 /* 119 * CLK_TCK uses libc's internal __sysconf() to retrieve the machine's 120 * HZ. The value of _SC_CLK_TCK is 39 -- we hard code it so we do not 121 * need to include unistd.h 122 */ 123 long __sysconf(int); 124 #define CLK_TCK (__sysconf(39)) 125 #endif 126 #endif 127 128 extern __aconst char *tzname[2]; 129 #ifndef __LIBC12_SOURCE__ 130 void tzset(void) __RENAME(__tzset50); 131 #endif 132 133 /* 134 * X/Open Portability Guide >= Issue 4 135 */ 136 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 137 extern int daylight; 138 #ifndef __LIBC12_SOURCE__ 139 extern long int timezone __RENAME(__timezone13); 140 #endif 141 char *strptime(const char * __restrict, const char * __restrict, 142 struct tm * __restrict); 143 #endif 144 145 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \ 146 defined(_NETBSD_SOURCE) 147 struct tm *getdate(const char *); 148 extern int getdate_err; 149 #endif 150 151 /* ISO/IEC 9899:2011 7.27.1/3 Components of time */ 152 #include <sys/timespec.h> 153 154 #if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \ 155 defined(_NETBSD_SOURCE) 156 #include <sys/time.h> 157 struct sigevent; 158 struct itimerspec; 159 int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *); 160 #ifndef __LIBC12_SOURCE__ 161 int clock_getres(clockid_t, struct timespec *) 162 __RENAME(__clock_getres50); 163 int clock_gettime(clockid_t, struct timespec *) 164 __RENAME(__clock_gettime50); 165 int clock_settime(clockid_t, const struct timespec *) 166 __RENAME(__clock_settime50); 167 int nanosleep(const struct timespec *, struct timespec *) 168 __RENAME(__nanosleep50); 169 int timer_gettime(timer_t, struct itimerspec *) __RENAME(__timer_gettime50); 170 int timer_settime(timer_t, int, const struct itimerspec * __restrict, 171 struct itimerspec * __restrict) __RENAME(__timer_settime50); 172 #endif 173 #ifdef _NETBSD_SOURCE 174 #include <sys/idtype.h> 175 int clock_getcpuclockid2(idtype_t, id_t, clockid_t *); 176 #endif 177 int clock_getcpuclockid(pid_t, clockid_t *); 178 179 int timer_create(clockid_t, struct sigevent * __restrict, 180 timer_t * __restrict); 181 int timer_delete(timer_t); 182 int timer_getoverrun(timer_t); 183 #endif /* _POSIX_C_SOURCE >= 199309 || _XOPEN_SOURCE >= 500 || ... */ 184 185 #if ((_POSIX_C_SOURCE - 0) >= 199506L && (_POSIX_C_SOURCE - 0) < 202405L) || \ 186 (_XOPEN_SOURCE - 0) >= 500 || defined(_REENTRANT) || defined(_NETBSD_SOURCE) 187 char *asctime_r(const struct tm * __restrict, char * __restrict); 188 #ifndef __LIBC12_SOURCE__ 189 char *ctime_r(const time_t *, char *) __RENAME(__ctime_r50); 190 #endif 191 #endif 192 193 #if (_POSIX_C_SOURCE - 0) >= 199506L || \ 194 (_XOPEN_SOURCE - 0) >= 500 || defined(_REENTRANT) || defined(_NETBSD_SOURCE) 195 #ifndef __LIBC12_SOURCE__ 196 struct tm *gmtime_r(const time_t * __restrict, struct tm * __restrict) 197 __RENAME(__gmtime_r50); 198 struct tm *localtime_r(const time_t * __restrict, struct tm * __restrict) 199 __RENAME(__localtime_r50); 200 #endif 201 #endif 202 203 #if (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE) 204 # ifndef __LOCALE_T_DECLARED 205 typedef struct _locale *locale_t; 206 # define __LOCALE_T_DECLARED 207 # endif 208 size_t strftime_l(char * __restrict, size_t, const char * __restrict, 209 const struct tm * __restrict, locale_t) 210 __attribute__((__format__(__strftime__, 3, 0))); 211 #endif 212 213 #if (__STDC_VERSION__ - 0 >= 202311L) || defined(_ISOC23_SOURCE) || \ 214 defined(_NETBSD_SOURCE) 215 #ifndef __LIBC12_SOURCE__ 216 time_t timegm(struct tm *) __RENAME(__timegm50); 217 #endif 218 #endif 219 220 #if defined(_NETBSD_SOURCE) 221 typedef struct __state *timezone_t; 222 223 #ifndef __LIBC12_SOURCE__ 224 time_t time2posix(time_t) __RENAME(__time2posix50); 225 time_t posix2time(time_t) __RENAME(__posix2time50); 226 time_t timeoff(struct tm *, long) __RENAME(__timeoff50); 227 time_t timelocal(struct tm *) __RENAME(__timelocal50); 228 struct tm *offtime(const time_t *, long) __RENAME(__offtime50); 229 void tzsetwall(void) __RENAME(__tzsetwall50); 230 231 struct tm *offtime_r(const time_t *, long, struct tm *) __RENAME(__offtime_r50); 232 struct tm *localtime_rz(timezone_t __restrict, const time_t * __restrict, 233 struct tm * __restrict) __RENAME(__localtime_rz50); 234 char *ctime_rz(timezone_t __restrict, const time_t *, char *) 235 __RENAME(__ctime_rz50); 236 time_t mktime_z(timezone_t __restrict, struct tm * __restrict) 237 __RENAME(__mktime_z50); 238 time_t timelocal_z(timezone_t __restrict, struct tm *) 239 __RENAME(__timelocal_z50); 240 time_t time2posix_z(timezone_t __restrict, time_t) __RENAME(__time2posix_z50); 241 time_t posix2time_z(timezone_t __restrict, time_t) __RENAME(__posix2time_z50); 242 timezone_t tzalloc(const char *) __RENAME(__tzalloc50); 243 void tzfree(timezone_t __restrict) __RENAME(__tzfree50); 244 const char *tzgetname(timezone_t __restrict, int) __RENAME(__tzgetname50); 245 long tzgetgmtoff(timezone_t __restrict, int) __RENAME(__tzgetgmtoff50); 246 #endif 247 248 size_t strftime_lz(timezone_t __restrict, char * __restrict, size_t, 249 const char * __restrict, const struct tm * __restrict, locale_t) 250 __attribute__((__format__(__strftime__, 4, 0))); 251 size_t strftime_z(timezone_t __restrict, char * __restrict, size_t, 252 const char * __restrict, const struct tm * __restrict) 253 __attribute__((__format__(__strftime__, 4, 0))); 254 char *strptime_l(const char * __restrict, const char * __restrict, 255 struct tm * __restrict, locale_t); 256 257 #endif /* _NETBSD_SOURCE */ 258 259 /* ISO/IEC 9899:2011 7.27.2.5 The timespec_get function */ 260 #if defined(_ISOC11_SOURCE) || (__STDC_VERSION__ - 0) >= 201101L || \ 261 defined(_NETBSD_SOURCE) || (__cplusplus - 0) >= 201103L || \ 262 (_POSIX_C_SOURCE - 0) >= 202405L 263 264 #define TIME_UTC 1 /* time elapsed since epoch */ 265 #if (__STDC_VERSION__ - 0 >= 202311L) || defined(_ISOC23_SOURCE) || \ 266 defined(_NETBSD_SOURCE) 267 #define TIME_MONOTONIC 2 268 #endif 269 270 int timespec_get(struct timespec *ts, int base); 271 #if (__STDC_VERSION__ - 0 >= 202311L) || defined(_ISOC23_SOURCE) || \ 272 defined(_NETBSD_SOURCE) 273 int timespec_getres(struct timespec *ts, int base); 274 #endif 275 #endif 276 277 __END_DECLS 278 279 #endif /* !_TIME_H_ */ 280
Indexes created Mon Jun 15 00:25:07 UTC 2026