time.h revision 1.32
1/* $NetBSD: time.h,v 1.32 2003/09/13 22:31:04 kleink 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 [0-61] */ 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 90char *asctime __P((const struct tm *)); 91clock_t clock __P((void)); 92char *ctime __P((const time_t *)); 93double difftime __P((time_t, time_t)); 94struct tm *gmtime __P((const time_t *)); 95struct tm *localtime __P((const time_t *)); 96time_t mktime __P((struct tm *)); 97size_t strftime __P((char * __restrict, size_t, const char * __restrict, 98 const struct tm * __restrict)); 99time_t time __P((time_t *)); 100 101#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 102 defined(_NETBSD_SOURCE) 103 104#ifdef __LIBC12_SOURCE__ 105#define CLK_TCK 100 106#else 107 108/* 109 * CLK_TCK uses libc's internal __sysconf() to retrieve the machine's 110 * HZ. The value of _SC_CLK_TCK is 39 -- we hard code it so we do not 111 * need to include unistd.h 112 */ 113long __sysconf __P((int)); 114#define CLK_TCK (__sysconf(39)) 115 116#endif 117 118extern __aconst char *tzname[2]; 119void tzset __P((void)); 120 121/* 122 * X/Open Portability Guide >= Issue 4 123 */ 124#if (_XOPEN_SOURCE - 0) >= 4 || defined(_NETBSD_SOURCE) 125extern int daylight; 126#ifndef __LIBC12_SOURCE__ 127extern long int timezone __RENAME(__timezone13); 128#endif 129char *strptime __P((const char * __restrict, const char * __restrict, 130 struct tm * __restrict)); 131#endif 132 133#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \ 134 defined(_NETBSD_SOURCE) 135#include <sys/time.h> /* XXX for struct timespec */ 136struct sigevent; 137struct itimerspec; 138int clock_getres __P((clockid_t, struct timespec *)); 139int clock_gettime __P((clockid_t, struct timespec *)); 140int clock_settime __P((clockid_t, const struct timespec *)); 141int nanosleep __P((const struct timespec *, struct timespec *)); 142int timer_create __P((clockid_t, struct sigevent * __restrict, 143 timer_t * __restrict)); 144int timer_delete __P((timer_t)); 145int timer_getoverrun __P((timer_t)); 146int timer_gettime __P((timer_t, struct itimerspec *)); 147int timer_settime __P((timer_t, int, const struct itimerspec * __restrict, 148 struct itimerspec * __restrict)); 149#endif /* _POSIX_C_SOURCE >= 199309 || _XOPEN_SOURCE >= 500 || ... */ 150 151#if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \ 152 defined(_REENTRANT) || defined(_NETBSD_SOURCE) 153char *asctime_r __P((const struct tm * __restrict, char * __restrict)); 154char *ctime_r __P((const time_t *, char *)); 155struct tm *gmtime_r __P((const time_t * __restrict, struct tm * __restrict)); 156struct tm *localtime_r __P((const time_t * __restrict, struct tm * __restrict)); 157#endif 158 159#if defined(_NETBSD_SOURCE) 160time_t time2posix __P((time_t)); 161time_t posix2time __P((time_t)); 162time_t timegm __P((struct tm *const)); 163time_t timeoff __P((struct tm *const, const long)); 164time_t timelocal __P((struct tm *const)); 165#ifdef __LIBC12_SOURCE__ 166char *timezone __P((int, int)); 167#endif 168void tzsetwall __P((void)); 169struct tm *offtime __P((const time_t *const, const long)); 170#endif /* _NETBSD_SOURCE */ 171 172#endif /* !_ANSI_SOURCE */ 173__END_DECLS 174 175#endif /* !_TIME_H_ */ 176