time.h revision 34925
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#include <sys/_posix.h> 46 47#ifndef _ANSI_SOURCE 48/* 49 * Frequency of the clock ticks reported by times(). Deprecated - use 50 * sysconf(_SC_CLK_TCK) instead. 51 */ 52#define CLK_TCK _BSD_CLK_TCK_ 53#endif 54 55/* Frequency of the clock ticks reported by clock(). */ 56#define CLOCKS_PER_SEC _BSD_CLOCKS_PER_SEC_ 57 58#ifndef NULL 59#define NULL 0 60#endif 61 62#ifdef _BSD_CLOCK_T_ 63typedef _BSD_CLOCK_T_ clock_t; 64#undef _BSD_CLOCK_T_ 65#endif 66 67#ifdef _BSD_TIME_T_ 68typedef _BSD_TIME_T_ time_t; 69#undef _BSD_TIME_T_ 70#endif 71 72#ifdef _BSD_SIZE_T_ 73typedef _BSD_SIZE_T_ size_t; 74#undef _BSD_SIZE_T_ 75#endif 76 77/* XXX I'm not sure if _ANSI_SOURCE is playing properly 78 * with the setups in _posix.h: 79 */ 80#if !defined(_ANSI_SOURCE) && defined(_P1003_1B_VISIBLE_HISTORICALLY) 81/* 82 * New in POSIX 1003.1b-1993. 83 */ 84#ifdef _BSD_CLOCKID_T_ 85typedef _BSD_CLOCKID_T_ clockid_t; 86#undef _BSD_CLOCKID_T_ 87#endif 88 89#ifdef _BSD_TIMER_T_ 90typedef _BSD_TIMER_T_ timer_t; 91#undef _BSD_TIMER_T_ 92#endif 93 94#ifndef _TIMESPEC_DECLARED 95#define _TIMESPEC_DECLARED 96struct timespec { 97 time_t tv_sec; /* seconds */ 98 long tv_nsec; /* and nanoseconds */ 99}; 100#endif 101#endif /* Neither ANSI nor POSIX */ 102 103struct tm { 104 int tm_sec; /* seconds after the minute [0-60] */ 105 int tm_min; /* minutes after the hour [0-59] */ 106 int tm_hour; /* hours since midnight [0-23] */ 107 int tm_mday; /* day of the month [1-31] */ 108 int tm_mon; /* months since January [0-11] */ 109 int tm_year; /* years since 1900 */ 110 int tm_wday; /* days since Sunday [0-6] */ 111 int tm_yday; /* days since January 1 [0-365] */ 112 int tm_isdst; /* Daylight Savings Time flag */ 113 long tm_gmtoff; /* offset from CUT in seconds */ 114 char *tm_zone; /* timezone abbreviation */ 115}; 116 117#include <sys/cdefs.h> 118 119__BEGIN_DECLS 120char *asctime __P((const struct tm *)); 121clock_t clock __P((void)); 122char *ctime __P((const time_t *)); 123double difftime __P((time_t, time_t)); 124struct tm *gmtime __P((const time_t *)); 125struct tm *localtime __P((const time_t *)); 126time_t mktime __P((struct tm *)); 127size_t strftime __P((char *, size_t, const char *, const struct tm *)); 128time_t time __P((time_t *)); 129 130#ifdef _THREAD_SAFE 131int asctime_r __P((const struct tm *, char *, int)); 132int ctime_r __P((const time_t *, char *, int)); 133struct tm *gmtime_r __P((const time_t *, struct tm *)); 134struct tm *localtime_r __P((const time_t *, struct tm *)); 135#endif 136 137#ifndef _ANSI_SOURCE 138void tzset __P((void)); 139#endif /* not ANSI */ 140 141#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) 142const char *strptime __P((const char *, const char *, struct tm *)); 143char *timezone __P((int, int)); 144void tzsetwall __P((void)); 145time_t timelocal __P((struct tm * const)); 146time_t timegm __P((struct tm * const)); 147#endif /* neither ANSI nor POSIX */ 148 149#if !defined(_ANSI_SOURCE) && defined(_P1003_1B_VISIBLE_HISTORICALLY) 150/* Introduced in POSIX 1003.1b-1993, not part of 1003.1-1990. */ 151int clock_getres __P((clockid_t, struct timespec *)); 152int clock_gettime __P((clockid_t, struct timespec *)); 153int clock_settime __P((clockid_t, const struct timespec *)); 154int nanosleep __P((const struct timespec *, struct timespec *)); 155#endif /* neither ANSI nor POSIX */ 156__END_DECLS 157 158#endif /* !_TIME_H_ */ 159