time.h revision 1.36
1 /* $NetBSD: time.h,v 1.36 2008/04/01 19:23:28 drochner 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 [0-61] */ 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 Savings 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 char *ctime(const time_t *); 93 double difftime(time_t, time_t); 94 struct tm *gmtime(const time_t *); 95 struct tm *localtime(const time_t *); 96 time_t mktime(struct tm *); 97 size_t strftime(char * __restrict, size_t, const char * __restrict, 98 const struct tm * __restrict); 99 time_t time(time_t *); 100 101 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 102 defined(_NETBSD_SOURCE) 103 #ifndef __LIBC12_SOURCE__ 104 /* 105 * CLK_TCK uses libc's internal __sysconf() to retrieve the machine's 106 * HZ. The value of _SC_CLK_TCK is 39 -- we hard code it so we do not 107 * need to include unistd.h 108 */ 109 long __sysconf(int); 110 #define CLK_TCK (__sysconf(39)) 111 #endif 112 #endif 113 114 extern __aconst char *tzname[2]; 115 void tzset(void); 116 117 /* 118 * X/Open Portability Guide >= Issue 4 119 */ 120 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 121 extern int daylight; 122 #ifndef __LIBC12_SOURCE__ 123 extern long int timezone __RENAME(__timezone13); 124 #endif 125 char *strptime(const char * __restrict, const char * __restrict, 126 struct tm * __restrict); 127 #endif 128 129 #if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \ 130 defined(_NETBSD_SOURCE) 131 #include <sys/time.h> /* XXX for struct timespec */ 132 struct sigevent; 133 struct itimerspec; 134 int clock_getres(clockid_t, struct timespec *); 135 int clock_gettime(clockid_t, struct timespec *); 136 int clock_settime(clockid_t, const struct timespec *); 137 int nanosleep(const struct timespec *, struct timespec *); 138 int timer_create(clockid_t, struct sigevent * __restrict, 139 timer_t * __restrict); 140 int timer_delete(timer_t); 141 int timer_getoverrun(timer_t); 142 int timer_gettime(timer_t, struct itimerspec *); 143 int timer_settime(timer_t, int, const struct itimerspec * __restrict, 144 struct itimerspec * __restrict); 145 #endif /* _POSIX_C_SOURCE >= 199309 || _XOPEN_SOURCE >= 500 || ... */ 146 147 #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \ 148 defined(_REENTRANT) || defined(_NETBSD_SOURCE) 149 char *asctime_r(const struct tm * __restrict, char * __restrict); 150 char *ctime_r(const time_t *, char *); 151 struct tm *gmtime_r(const time_t * __restrict, struct tm * __restrict); 152 struct tm *localtime_r(const time_t * __restrict, struct tm * __restrict); 153 #endif 154 155 #if defined(_NETBSD_SOURCE) 156 time_t time2posix(time_t); 157 time_t posix2time(time_t); 158 time_t timegm(struct tm *); 159 time_t timeoff(struct tm *, long); 160 time_t timelocal(struct tm *); 161 void tzsetwall(void); 162 struct tm *offtime(const time_t *, long); 163 #endif /* _NETBSD_SOURCE */ 164 165 __END_DECLS 166 167 #endif /* !_TIME_H_ */ 168
Indexes created Mon Sep 29 03:10:08 GMT 2025