1/* $NetBSD: time.h,v 1.49 2023/08/19 08:54:36 rillig 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_ 49typedef _BSD_CLOCK_T_ clock_t; 50#undef _BSD_CLOCK_T_ 51#endif 52 53#ifdef _BSD_TIME_T_ 54typedef _BSD_TIME_T_ time_t; 55#undef _BSD_TIME_T_ 56#endif 57 58#ifdef _BSD_SIZE_T_ 59typedef _BSD_SIZE_T_ size_t; 60#undef _BSD_SIZE_T_ 61#endif 62 63#ifdef _BSD_CLOCKID_T_ 64typedef _BSD_CLOCKID_T_ clockid_t; 65#undef _BSD_CLOCKID_T_ 66#endif 67 68#ifdef _BSD_TIMER_T_ 69typedef _BSD_TIMER_T_ timer_t; 70#undef _BSD_TIMER_T_ 71#endif 72 73#define CLOCKS_PER_SEC 100 74 75struct 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 90char *asctime(const struct tm *); 91clock_t clock(void); 92#ifndef __LIBC12_SOURCE__ 93char *ctime(const time_t *) __RENAME(__ctime50); 94double difftime(time_t, time_t) __RENAME(__difftime50); 95struct tm *gmtime(const time_t *) __RENAME(__gmtime50); 96struct tm *localtime(const time_t *) __RENAME(__locatime50); 97time_t time(time_t *) __RENAME(__time50); 98time_t mktime(struct tm *) __RENAME(__mktime50); 99#endif 100size_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 */ 112long __sysconf(int); 113#define CLK_TCK (__sysconf(39)) 114#endif 115#endif 116 117extern __aconst char *tzname[2]; 118#ifndef __LIBC12_SOURCE__ 119void tzset(void) __RENAME(__tzset50); 120#endif 121 122/* 123 * X/Open Portability Guide >= Issue 4 124 */ 125#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 126extern int daylight; 127#ifndef __LIBC12_SOURCE__ 128extern long int timezone __RENAME(__timezone13); 129#endif 130char *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) 136struct tm *getdate(const char *); 137extern int getdate_err; 138#endif 139 140/* ISO/IEC 9899:201x 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> 146struct sigevent; 147struct itimerspec; 148int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *); 149#ifndef __LIBC12_SOURCE__ 150int clock_getres(clockid_t, struct timespec *) 151 __RENAME(__clock_getres50); 152int clock_gettime(clockid_t, struct timespec *) 153 __RENAME(__clock_gettime50); 154int clock_settime(clockid_t, const struct timespec *) 155 __RENAME(__clock_settime50); 156int nanosleep(const struct timespec *, struct timespec *) 157 __RENAME(__nanosleep50); 158int timer_gettime(timer_t, struct itimerspec *) __RENAME(__timer_gettime50); 159int 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> 164int clock_getcpuclockid2(idtype_t, id_t, clockid_t *); 165#endif 166int clock_getcpuclockid(pid_t, clockid_t *); 167 168int timer_create(clockid_t, struct sigevent * __restrict, 169 timer_t * __restrict); 170int timer_delete(timer_t); 171int timer_getoverrun(timer_t); 172#endif /* _POSIX_C_SOURCE >= 199309 || _XOPEN_SOURCE >= 500 || ... */ 173 174#if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \ 175 defined(_REENTRANT) || defined(_NETBSD_SOURCE) 176char *asctime_r(const struct tm * __restrict, char * __restrict); 177#ifndef __LIBC12_SOURCE__ 178char *ctime_r(const time_t *, char *) __RENAME(__ctime_r50); 179struct tm *gmtime_r(const time_t * __restrict, struct tm * __restrict) 180 __RENAME(__gmtime_r50); 181struct tm *localtime_r(const time_t * __restrict, struct tm * __restrict) 182 __RENAME(__localtime_r50); 183#endif 184#endif 185 186#if (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE) 187# ifndef __LOCALE_T_DECLARED 188typedef struct _locale *locale_t; 189# define __LOCALE_T_DECLARED 190# endif 191size_t strftime_l(char * __restrict, size_t, const char * __restrict, 192 const struct tm * __restrict, locale_t) 193 __attribute__((__format__(__strftime__, 3, 0))); 194#endif 195 196#if defined(_NETBSD_SOURCE) 197 198typedef struct __state *timezone_t; 199 200#ifndef __LIBC12_SOURCE__ 201time_t time2posix(time_t) __RENAME(__time2posix50); 202time_t posix2time(time_t) __RENAME(__posix2time50); 203time_t timegm(struct tm *) __RENAME(__timegm50); 204time_t timeoff(struct tm *, long) __RENAME(__timeoff50); 205time_t timelocal(struct tm *) __RENAME(__timelocal50); 206struct tm *offtime(const time_t *, long) __RENAME(__offtime50); 207void tzsetwall(void) __RENAME(__tzsetwall50); 208 209struct tm *offtime_r(const time_t *, long, struct tm *) __RENAME(__offtime_r50); 210struct tm *localtime_rz(timezone_t __restrict, const time_t * __restrict, 211 struct tm * __restrict) __RENAME(__localtime_rz50); 212char *ctime_rz(timezone_t __restrict, const time_t *, char *) 213 __RENAME(__ctime_rz50); 214time_t mktime_z(timezone_t __restrict, struct tm * __restrict) 215 __RENAME(__mktime_z50); 216time_t timelocal_z(timezone_t __restrict, struct tm *) 217 __RENAME(__timelocal_z50); 218time_t time2posix_z(timezone_t __restrict, time_t) __RENAME(__time2posix_z50); 219time_t posix2time_z(timezone_t __restrict, time_t) __RENAME(__posix2time_z50); 220timezone_t tzalloc(const char *) __RENAME(__tzalloc50); 221void tzfree(timezone_t __restrict) __RENAME(__tzfree50); 222const char *tzgetname(timezone_t __restrict, int) __RENAME(__tzgetname50); 223long tzgetgmtoff(timezone_t __restrict, int) __RENAME(__tzgetgmtoff50); 224#endif 225 226size_t strftime_lz(timezone_t __restrict, char * __restrict, size_t, 227 const char * __restrict, const struct tm * __restrict, locale_t) 228 __attribute__((__format__(__strftime__, 4, 0))); 229size_t strftime_z(timezone_t __restrict, char * __restrict, size_t, 230 const char * __restrict, const struct tm * __restrict) 231 __attribute__((__format__(__strftime__, 4, 0))); 232char *strptime_l(const char * __restrict, const char * __restrict, 233 struct tm * __restrict, locale_t); 234 235#endif /* _NETBSD_SOURCE */ 236 237/* ISO/IEC 9899:201x 7.27.2.5 The timespec_get function */ 238#define TIME_UTC 1 /* time elapsed since epoch */ 239int timespec_get(struct timespec *ts, int base); 240 241__END_DECLS 242 243#endif /* !_TIME_H_ */ 244