237c4e3a9e
serve two purposes: (1) so we can maintain backwards compatibility with protocols (rwhod, dump, etc...) that either assume time_t is 32 bits or assume sizeof(time_t) == sizeof(int), or make other similar assumptions. (2) To tag such routines (by the presence of these calls) for future cleanup/extension work. The 32->64 routine, time32_to_time() (when time_t is 64 bits, that is), is defined specifically to implement temporal locality to properly set the msb bits of a 64 bit time_t quantity, using the 50 year rule. The locality code has not been implemented yet (and doesn't need to be for a while), but that is the intent. This will allow us to maintain backwards protocol compatibility past 2038. These routines are intended to be platform and time_t agnostic. MFC after: 1 week
171 lines
5.5 KiB
C
171 lines
5.5 KiB
C
/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)time.h 8.3 (Berkeley) 1/21/94
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*/
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/*
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* $FreeBSD$
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*/
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#ifndef _TIME_H_
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#define _TIME_H_
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#include <machine/ansi.h>
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#include <sys/_posix.h>
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#ifndef _ANSI_SOURCE
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/*
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* Frequency of the clock ticks reported by times(). Deprecated - use
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* sysconf(_SC_CLK_TCK) instead.
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*/
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#define CLK_TCK _BSD_CLK_TCK_
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#endif
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/* Frequency of the clock ticks reported by clock(). */
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#define CLOCKS_PER_SEC _BSD_CLOCKS_PER_SEC_
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#ifndef NULL
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#define NULL 0
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#endif
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#ifdef _BSD_CLOCK_T_
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typedef _BSD_CLOCK_T_ clock_t;
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#undef _BSD_CLOCK_T_
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#endif
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#ifdef _BSD_TIME_T_
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typedef _BSD_TIME_T_ time_t;
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#undef _BSD_TIME_T_
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#endif
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#ifdef _BSD_SIZE_T_
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typedef _BSD_SIZE_T_ size_t;
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#undef _BSD_SIZE_T_
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#endif
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/* XXX I'm not sure if _ANSI_SOURCE is playing properly
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* with the setups in _posix.h:
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*/
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#if !defined(_ANSI_SOURCE) && defined(_P1003_1B_VISIBLE_HISTORICALLY)
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/*
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* New in POSIX 1003.1b-1993.
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*/
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#ifdef _BSD_CLOCKID_T_
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typedef _BSD_CLOCKID_T_ clockid_t;
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#undef _BSD_CLOCKID_T_
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#endif
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#ifdef _BSD_TIMER_T_
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typedef _BSD_TIMER_T_ timer_t;
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#undef _BSD_TIMER_T_
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#endif
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#ifndef _TIMESPEC_DECLARED
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#define _TIMESPEC_DECLARED
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struct timespec {
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time_t tv_sec; /* seconds */
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long tv_nsec; /* and nanoseconds */
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};
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#endif
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#endif /* Neither ANSI nor POSIX */
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struct tm {
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int tm_sec; /* seconds after the minute [0-60] */
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int tm_min; /* minutes after the hour [0-59] */
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int tm_hour; /* hours since midnight [0-23] */
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int tm_mday; /* day of the month [1-31] */
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int tm_mon; /* months since January [0-11] */
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int tm_year; /* years since 1900 */
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int tm_wday; /* days since Sunday [0-6] */
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int tm_yday; /* days since January 1 [0-365] */
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int tm_isdst; /* Daylight Savings Time flag */
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long tm_gmtoff; /* offset from UTC in seconds */
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char *tm_zone; /* timezone abbreviation */
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};
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#include <sys/cdefs.h>
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#ifndef _ANSI_SOURCE
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extern char *tzname[];
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#endif
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__BEGIN_DECLS
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char *asctime __P((const struct tm *));
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clock_t clock __P((void));
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char *ctime __P((const time_t *));
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double difftime __P((time_t, time_t));
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struct tm *gmtime __P((const time_t *));
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struct tm *localtime __P((const time_t *));
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time_t mktime __P((struct tm *));
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size_t strftime __P((char *, size_t, const char *, const struct tm *));
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time_t time __P((time_t *));
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#ifndef _ANSI_SOURCE
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time_t time32_to_time __P((__int32_t t32));
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__int32_t time_to_time32 __P((time_t t));
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time_t time64_to_time __P((__int64_t t64));
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__int64_t time_to_time64 __P((time_t t));
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#endif /* not ANSI */
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#ifndef _ANSI_SOURCE
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void tzset __P((void));
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#endif /* not ANSI */
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#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
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char *asctime_r __P((const struct tm *, char *));
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char *ctime_r __P((const time_t *, char *));
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struct tm *gmtime_r __P((const time_t *, struct tm *));
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struct tm *localtime_r __P((const time_t *, struct tm *));
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char *strptime __P((const char *, const char *, struct tm *));
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char *timezone __P((int, int));
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void tzsetwall __P((void));
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time_t timelocal __P((struct tm * const));
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time_t timegm __P((struct tm * const));
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#endif /* neither ANSI nor POSIX */
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#if !defined(_ANSI_SOURCE) && defined(_P1003_1B_VISIBLE_HISTORICALLY)
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/* Introduced in POSIX 1003.1b-1993, not part of 1003.1-1990. */
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int clock_getres __P((clockid_t, struct timespec *));
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int clock_gettime __P((clockid_t, struct timespec *));
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int clock_settime __P((clockid_t, const struct timespec *));
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int nanosleep __P((const struct timespec *, struct timespec *));
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#endif /* neither ANSI nor POSIX */
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__END_DECLS
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#endif /* !_TIME_H_ */
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