time.h revision 25773
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#ifndef _TIME_H_ 42#define _TIME_H_ 43 44#include <machine/ansi.h> 45 46#ifndef _ANSI_SOURCE 47/* 48 * Frequency of the clock ticks reported by times(). Deprecated - use 49 * sysconf(_SC_CLK_TCK) instead. 50 */ 51#define CLK_TCK _BSD_CLK_TCK_ 52#endif 53 54/* Frequency of the clock ticks reported by clock(). */ 55#define CLOCKS_PER_SEC _BSD_CLOCKS_PER_SEC_ 56 57#ifndef NULL 58#define NULL 0 59#endif 60 61#ifdef _BSD_CLOCK_T_ 62typedef _BSD_CLOCK_T_ clock_t; 63#undef _BSD_CLOCK_T_ 64#endif 65 66#ifdef _BSD_TIME_T_ 67typedef _BSD_TIME_T_ time_t; 68#undef _BSD_TIME_T_ 69#endif 70 71#ifdef _BSD_SIZE_T_ 72typedef _BSD_SIZE_T_ size_t; 73#undef _BSD_SIZE_T_ 74#endif 75 76#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) 77/* 78 * New in POSIX 1003.1b-1993. 79 */ 80#ifdef _BSD_CLOCKID_T_ 81typedef _BSD_CLOCKID_T_ clockid_t; 82#undef _BSD_CLOCKID_T_ 83#endif 84 85#ifdef _BSD_TIMER_T_ 86typedef _BSD_TIMER_T_ timer_t; 87#undef _BSD_TIMER_T_ 88#endif 89 90#ifndef _TIMESPEC_DECLARED 91#define _TIMESPEC_DECLARED 92struct timespec { 93 time_t tv_sec; /* seconds */ 94 long tv_nsec; /* and nanoseconds */ 95}; 96#endif 97#endif /* Neither ANSI nor POSIX */ 98 99struct tm { 100 int tm_sec; /* seconds after the minute [0-60] */ 101 int tm_min; /* minutes after the hour [0-59] */ 102 int tm_hour; /* hours since midnight [0-23] */ 103 int tm_mday; /* day of the month [1-31] */ 104 int tm_mon; /* months since January [0-11] */ 105 int tm_year; /* years since 1900 */ 106 int tm_wday; /* days since Sunday [0-6] */ 107 int tm_yday; /* days since January 1 [0-365] */ 108 int tm_isdst; /* Daylight Savings Time flag */ 109 long tm_gmtoff; /* offset from CUT in seconds */ 110 char *tm_zone; /* timezone abbreviation */ 111}; 112 113#include <sys/cdefs.h> 114 115__BEGIN_DECLS 116char *asctime __P((const struct tm *)); 117clock_t clock __P((void)); 118char *ctime __P((const time_t *)); 119double difftime __P((time_t, time_t)); 120struct tm *gmtime __P((const time_t *)); 121struct tm *localtime __P((const time_t *)); 122time_t mktime __P((struct tm *)); 123size_t strftime __P((char *, size_t, const char *, const struct tm *)); 124time_t time __P((time_t *)); 125 126#ifdef _THREAD_SAFE 127int asctime_r __P((const struct tm *, char *, int)); 128int ctime_r __P((const time_t *, char *, int)); 129struct tm *gmtime_r __P((const time_t *, struct tm *)); 130struct tm *localtime_r __P((const time_t *, struct tm *)); 131#endif 132 133#ifndef _ANSI_SOURCE 134void tzset __P((void)); 135#endif /* not ANSI */ 136 137#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) 138char *timezone __P((int, int)); 139void tzsetwall __P((void)); 140time_t timelocal __P((struct tm * const)); 141time_t timegm __P((struct tm * const)); 142 143/* Introduced in POSIX 1003.1b-1993, not part of 1003.1-1990. */ 144int clock_getres __P((clockid_t, struct timespec *)); 145int clock_gettime __P((clockid_t, struct timespec *)); 146int clock_settime __P((clockid_t, const struct timespec *)); 147int nanosleep __P((const struct timespec *, struct timespec *)); 148#endif /* neither ANSI nor POSIX */ 149__END_DECLS 150 151#endif /* !_TIME_H_ */ 152