time.h revision 93032
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 93032 2002-03-23 17:24:55Z imp $ 43 */ 44 45#ifndef _TIME_H_ 46#define _TIME_H_ 47 48#include <machine/ansi.h> 49#include <sys/_posix.h> 50 51#ifndef _ANSI_SOURCE 52/* 53 * Frequency of the clock ticks reported by times(). Deprecated - use 54 * sysconf(_SC_CLK_TCK) instead. 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/* XXX I'm not sure if _ANSI_SOURCE is playing properly 82 * with the setups in _posix.h: 83 */ 84#if !defined(_ANSI_SOURCE) && defined(_P1003_1B_VISIBLE_HISTORICALLY) 85/* 86 * New in POSIX 1003.1b-1993. 87 */ 88#ifdef _BSD_CLOCKID_T_ 89typedef _BSD_CLOCKID_T_ clockid_t; 90#undef _BSD_CLOCKID_T_ 91#endif 92 93#ifdef _BSD_TIMER_T_ 94typedef _BSD_TIMER_T_ timer_t; 95#undef _BSD_TIMER_T_ 96#endif 97 98#ifndef _TIMESPEC_DECLARED 99#define _TIMESPEC_DECLARED 100struct timespec { 101 time_t tv_sec; /* seconds */ 102 long tv_nsec; /* and nanoseconds */ 103}; 104#endif 105#endif /* Neither ANSI nor POSIX */ 106 107struct tm { 108 int tm_sec; /* seconds after the minute [0-60] */ 109 int tm_min; /* minutes after the hour [0-59] */ 110 int tm_hour; /* hours since midnight [0-23] */ 111 int tm_mday; /* day of the month [1-31] */ 112 int tm_mon; /* months since January [0-11] */ 113 int tm_year; /* years since 1900 */ 114 int tm_wday; /* days since Sunday [0-6] */ 115 int tm_yday; /* days since January 1 [0-365] */ 116 int tm_isdst; /* Daylight Savings Time flag */ 117 long tm_gmtoff; /* offset from UTC in seconds */ 118 char *tm_zone; /* timezone abbreviation */ 119}; 120 121#include <sys/cdefs.h> 122 123#ifndef _ANSI_SOURCE 124extern char *tzname[]; 125#endif 126 127__BEGIN_DECLS 128char *asctime(const struct tm *); 129clock_t clock(void); 130char *ctime(const time_t *); 131double difftime(time_t, time_t); 132struct tm *gmtime(const time_t *); 133struct tm *localtime(const time_t *); 134time_t mktime(struct tm *); 135size_t strftime(char *, size_t, const char *, const struct tm *); 136time_t time(time_t *); 137 138#ifndef _ANSI_SOURCE 139time_t _time32_to_time(__int32_t t32); 140__int32_t _time_to_time32(time_t t); 141time_t _time64_to_time(__int64_t t64); 142__int64_t _time_to_time64(time_t t); 143long _time_to_long(time_t t); 144time_t _long_to_time(long tlong); 145int _time_to_int(time_t t); 146time_t _int_to_time(int tint); 147#endif /* not ANSI */ 148 149#ifndef _ANSI_SOURCE 150void tzset(void); 151#endif /* not ANSI */ 152 153#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) 154char *asctime_r(const struct tm *, char *); 155char *ctime_r(const time_t *, char *); 156struct tm *gmtime_r(const time_t *, struct tm *); 157struct tm *localtime_r(const time_t *, struct tm *); 158char *strptime(const char *, const char *, struct tm *); 159char *timezone(int, int); 160void tzsetwall(void); 161time_t timelocal(struct tm * const); 162time_t timegm(struct tm * const); 163#endif /* neither ANSI nor POSIX */ 164 165#if !defined(_ANSI_SOURCE) && defined(_P1003_1B_VISIBLE_HISTORICALLY) 166/* Introduced in POSIX 1003.1b-1993, not part of 1003.1-1990. */ 167int clock_getres(clockid_t, struct timespec *); 168int clock_gettime(clockid_t, struct timespec *); 169int clock_settime(clockid_t, const struct timespec *); 170int nanosleep(const struct timespec *, struct timespec *); 171#endif /* neither ANSI nor POSIX */ 172__END_DECLS 173 174#endif /* !_TIME_H_ */ 175