9fa41d7348
builtin attributes for (for symmetry and consistency). In the future this might change to use compiler-neutral macros. On the other hand I don't know of any other compiler that provides other macros with similar functionality, so why bother?
169 lines
5.6 KiB
C
169 lines
5.6 KiB
C
/* $NetBSD: time.h,v 1.37 2008/09/21 16:59:46 christos Exp $ */
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/*
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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. 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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#ifndef _TIME_H_
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#define _TIME_H_
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#include <sys/cdefs.h>
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#include <sys/featuretest.h>
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#include <machine/ansi.h>
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#include <sys/null.h>
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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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#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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#define CLOCKS_PER_SEC 100
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struct tm {
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int tm_sec; /* seconds after the minute [0-61] */
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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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__aconst char *tm_zone; /* timezone abbreviation */
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};
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__BEGIN_DECLS
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char *asctime(const struct tm *);
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clock_t clock(void);
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char *ctime(const time_t *);
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double difftime(time_t, time_t);
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struct tm *gmtime(const time_t *);
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struct tm *localtime(const time_t *);
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time_t mktime(struct tm *);
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size_t strftime(char * __restrict, size_t, const char * __restrict,
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const struct tm * __restrict)
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__attribute__((__format__(__strftime__, 3, 0)));
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time_t time(time_t *);
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#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
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defined(_NETBSD_SOURCE)
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#ifndef __LIBC12_SOURCE__
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/*
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* CLK_TCK uses libc's internal __sysconf() to retrieve the machine's
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* HZ. The value of _SC_CLK_TCK is 39 -- we hard code it so we do not
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* need to include unistd.h
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*/
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long __sysconf(int);
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#define CLK_TCK (__sysconf(39))
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#endif
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#endif
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extern __aconst char *tzname[2];
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void tzset(void);
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/*
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* X/Open Portability Guide >= Issue 4
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*/
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#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
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extern int daylight;
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#ifndef __LIBC12_SOURCE__
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extern long int timezone __RENAME(__timezone13);
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#endif
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char *strptime(const char * __restrict, const char * __restrict,
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struct tm * __restrict);
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#endif
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#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
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defined(_NETBSD_SOURCE)
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#include <sys/time.h> /* XXX for struct timespec */
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struct sigevent;
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struct itimerspec;
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int clock_getres(clockid_t, struct timespec *);
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int clock_gettime(clockid_t, struct timespec *);
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int clock_settime(clockid_t, const struct timespec *);
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int nanosleep(const struct timespec *, struct timespec *);
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int timer_create(clockid_t, struct sigevent * __restrict,
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timer_t * __restrict);
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int timer_delete(timer_t);
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int timer_getoverrun(timer_t);
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int timer_gettime(timer_t, struct itimerspec *);
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int timer_settime(timer_t, int, const struct itimerspec * __restrict,
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struct itimerspec * __restrict);
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#endif /* _POSIX_C_SOURCE >= 199309 || _XOPEN_SOURCE >= 500 || ... */
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#if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
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defined(_REENTRANT) || defined(_NETBSD_SOURCE)
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char *asctime_r(const struct tm * __restrict, char * __restrict);
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char *ctime_r(const time_t *, char *);
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struct tm *gmtime_r(const time_t * __restrict, struct tm * __restrict);
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struct tm *localtime_r(const time_t * __restrict, struct tm * __restrict);
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#endif
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#if defined(_NETBSD_SOURCE)
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time_t time2posix(time_t);
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time_t posix2time(time_t);
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time_t timegm(struct tm *);
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time_t timeoff(struct tm *, long);
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time_t timelocal(struct tm *);
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void tzsetwall(void);
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struct tm *offtime(const time_t *, long);
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#endif /* _NETBSD_SOURCE */
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__END_DECLS
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#endif /* !_TIME_H_ */
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