time.h revision 101888
1/* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)time.h 8.3 (Berkeley) 1/21/94 39 */ 40 41/* 42 * $FreeBSD: head/include/time.h 101888 2002-08-14 23:20:48Z robert $ 43 */ 44 45#ifndef _TIME_H_ 46#define _TIME_H_ 47 48#include <sys/cdefs.h> 49#include <machine/ansi.h> 50 51#if __POSIX_VISIBLE > 0 && __POSIX_VISIBLE < 200112 || __BSD_VISIBLE 52/* 53 * Frequency of the clock ticks reported by times(). Deprecated - use 54 * sysconf(_SC_CLK_TCK) instead. (Removed in 1003.1-2001.) 55 */ 56#define CLK_TCK _BSD_CLK_TCK_ 57#endif 58 59/* Frequency of the clock ticks reported by clock(). */ 60#define CLOCKS_PER_SEC _BSD_CLOCKS_PER_SEC_ 61 62#ifndef NULL 63#define NULL 0 64#endif 65 66#ifdef _BSD_CLOCK_T_ 67typedef _BSD_CLOCK_T_ clock_t; 68#undef _BSD_CLOCK_T_ 69#endif 70 71#ifdef _BSD_TIME_T_ 72typedef _BSD_TIME_T_ time_t; 73#undef _BSD_TIME_T_ 74#endif 75 76#ifdef _BSD_SIZE_T_ 77typedef _BSD_SIZE_T_ size_t; 78#undef _BSD_SIZE_T_ 79#endif 80 81#if __POSIX_VISIBLE >= 199309 82/* 83 * New in POSIX 1003.1b-1993. 84 */ 85#ifdef _BSD_CLOCKID_T_ 86typedef _BSD_CLOCKID_T_ clockid_t; 87#undef _BSD_CLOCKID_T_ 88#endif 89 90#ifdef _BSD_TIMER_T_ 91typedef _BSD_TIMER_T_ timer_t; 92#undef _BSD_TIMER_T_ 93#endif 94 95#include <sys/timespec.h> 96#endif /* __POSIX_VISIBLE >= 199309 */ 97 98struct tm { 99 int tm_sec; /* seconds after the minute [0-60] */ 100 int tm_min; /* minutes after the hour [0-59] */ 101 int tm_hour; /* hours since midnight [0-23] */ 102 int tm_mday; /* day of the month [1-31] */ 103 int tm_mon; /* months since January [0-11] */ 104 int tm_year; /* years since 1900 */ 105 int tm_wday; /* days since Sunday [0-6] */ 106 int tm_yday; /* days since January 1 [0-365] */ 107 int tm_isdst; /* Daylight Savings Time flag */ 108 long tm_gmtoff; /* offset from UTC in seconds */ 109 char *tm_zone; /* timezone abbreviation */ 110}; 111 112#if __POSIX_VISIBLE 113extern char *tzname[]; 114#endif 115 116__BEGIN_DECLS 117char *asctime(const struct tm *); 118clock_t clock(void); 119char *ctime(const time_t *); 120double difftime(time_t, time_t); 121struct tm *gmtime(const time_t *); 122struct tm *localtime(const time_t *); 123time_t mktime(struct tm *); 124size_t strftime(char *__restrict, size_t, const char *__restrict, 125 const struct tm *__restrict); 126time_t time(time_t *); 127 128#if __POSIX_VISIBLE 129void tzset(void); 130#endif 131 132#if __POSIX_VISIBLE >= 199309 133int clock_getres(clockid_t, struct timespec *); 134int clock_gettime(clockid_t, struct timespec *); 135int clock_settime(clockid_t, const struct timespec *); 136int nanosleep(const struct timespec *, struct timespec *); 137#endif /* __POSIX_VISIBLE >= 199309 */ 138 139#if __POSIX_VISIBLE >= 199506 140char *asctime_r(const struct tm *, char *); 141char *ctime_r(const time_t *, char *); 142struct tm *gmtime_r(const time_t *, struct tm *); 143struct tm *localtime_r(const time_t *, struct tm *); 144#endif 145 146#if __XSI_VISIBLE 147char *strptime(const char *__restrict, const char *__restrict, 148 struct tm *__restrict); 149#endif 150 151#if __BSD_VISIBLE 152char *timezone(int, int); 153void tzsetwall(void); 154time_t timelocal(struct tm * const); 155time_t timegm(struct tm * const); 156#endif /* __BSD_VISIBLE */ 157__END_DECLS 158 159#endif /* !_TIME_H_ */ 160