libc: Bring in getdate() from NetBSD for POSIX conformance.
[dragonfly.git] / include / time.h
CommitLineData
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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.
0d5acd74 18 * 3. Neither the name of the University nor the names of its contributors
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19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)time.h 8.3 (Berkeley) 1/21/94
35 */
36
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37/*
38 * $FreeBSD: head/include/time.h 245428 2013-01-14 18:01:19Z dim $
39 */
40
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41#ifndef _TIME_H_
42#define _TIME_H_
43
62a16a89 44#include <sys/cdefs.h>
0d5acd74 45#include <sys/_null.h>
9d4f17d1 46#include <machine/stdint.h>
984263bc 47
f85b95dd 48#if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE < 200112)
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49/*
50 * Frequency of the clock ticks reported by times(). Deprecated - use
62a16a89 51 * sysconf(_SC_CLK_TCK) instead. (Removed in 1003.1-2001.)
984263bc 52 */
881c8427 53#define CLK_TCK 128
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54#endif
55
56/* Frequency of the clock ticks reported by clock(). */
65de5b12 57#define CLOCKS_PER_SEC ((clock_t)128)
984263bc 58
a81b3ef3 59#ifndef _CLOCK_T_DECLARED
4b68a649 60#define _CLOCK_T_DECLARED
e2565a42 61typedef __clock_t clock_t;
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62#endif
63
a81b3ef3 64#ifndef _TIME_T_DECLARED
4b68a649 65#define _TIME_T_DECLARED
e2565a42 66typedef __time_t time_t;
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67#endif
68
62a16a89 69#ifndef _SIZE_T_DECLARED
4b68a649 70#define _SIZE_T_DECLARED
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71typedef __size_t size_t;
72#endif
73
74#if __POSIX_VISIBLE >= 199309
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75/*
76 * New in POSIX 1003.1b-1993.
77 */
af1b988d 78#include <sys/timespec.h>
a81b3ef3 79#ifndef _CLOCKID_T_DECLARED
4b68a649 80#define _CLOCKID_T_DECLARED
e2565a42 81typedef __clockid_t clockid_t;
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82#endif
83
a81b3ef3 84#ifndef _TIMER_T_DECLARED
4b68a649 85#define _TIMER_T_DECLARED
e2565a42 86typedef __timer_t timer_t;
984263bc 87#endif
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88#endif /* __POSIX_VISIBLE >= 199309 */
89
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90#if __POSIX_VISIBLE >= 200112
91#ifndef _PID_T_DECLARED
92#define _PID_T_DECLARED
93typedef __pid_t pid_t;
94#endif
95#endif
96
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97#if __BSD_VISIBLE
98#ifndef _LWPID_T_DECLARED
99#define _LWPID_T_DECLARED
100typedef __pid_t lwpid_t; /* light weight process id */
101#endif
102#endif
103
62a16a89 104/* These macros are also in sys/time.h. */
94c1145b 105#if !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 199309
4b68a649 106#define CLOCK_REALTIME 0
f33ef0a8 107#if __BSD_VISIBLE
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108#define CLOCK_VIRTUAL 1
109#define CLOCK_PROF 2
62a16a89 110#endif
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111#define CLOCK_MONOTONIC 4
112#define CLOCK_UPTIME 5 /* FreeBSD-specific. */
113#define CLOCK_UPTIME_PRECISE 7 /* FreeBSD-specific. */
114#define CLOCK_UPTIME_FAST 8 /* FreeBSD-specific. */
115#define CLOCK_REALTIME_PRECISE 9 /* FreeBSD-specific. */
116#define CLOCK_REALTIME_FAST 10 /* FreeBSD-specific. */
117#define CLOCK_MONOTONIC_PRECISE 11 /* FreeBSD-specific. */
118#define CLOCK_MONOTONIC_FAST 12 /* FreeBSD-specific. */
119#define CLOCK_SECOND 13 /* FreeBSD-specific. */
120#define CLOCK_THREAD_CPUTIME_ID 14
0d5acd74 121#define CLOCK_PROCESS_CPUTIME_ID 15
94c1145b 122#endif /* !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 199309 */
62a16a89 123
94c1145b 124#if !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 199309
62a16a89 125#if __BSD_VISIBLE
4b68a649 126#define TIMER_RELTIME 0x0 /* relative timer */
62a16a89 127#endif
4b68a649 128#define TIMER_ABSTIME 0x1 /* absolute timer */
94c1145b 129#endif /* !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 199309 */
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130
131struct tm {
132 int tm_sec; /* seconds after the minute [0-60] */
133 int tm_min; /* minutes after the hour [0-59] */
134 int tm_hour; /* hours since midnight [0-23] */
135 int tm_mday; /* day of the month [1-31] */
136 int tm_mon; /* months since January [0-11] */
137 int tm_year; /* years since 1900 */
138 int tm_wday; /* days since Sunday [0-6] */
139 int tm_yday; /* days since January 1 [0-365] */
140 int tm_isdst; /* Daylight Savings Time flag */
0d5acd74 141 long tm_gmtoff; /* offset from UTC in seconds */
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142 char *tm_zone; /* timezone abbreviation */
143};
144
62a16a89 145#if __POSIX_VISIBLE
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146extern char *tzname[];
147#endif
148
149__BEGIN_DECLS
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150char *asctime(const struct tm *);
151clock_t clock(void);
152char *ctime(const time_t *);
153double difftime(time_t, time_t);
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154struct tm *gmtime(const time_t *);
155struct tm *localtime(const time_t *);
156time_t mktime(struct tm *);
157size_t strftime(char * __restrict, size_t, const char * __restrict,
c32cc5a0 158 const struct tm * __restrict) __strftimelike(3, 0);
0d5acd74 159time_t time(time_t *);
dd8f8e17 160
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161#if __POSIX_VISIBLE
162void tzset(void);
62a16a89 163#endif
984263bc 164
62a16a89 165#if __POSIX_VISIBLE >= 199309
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166int clock_getres(clockid_t, struct timespec *);
167int clock_gettime(clockid_t, struct timespec *);
168int clock_settime(clockid_t, const struct timespec *);
0d5acd74 169int nanosleep(const struct timespec *, struct timespec *);
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170#endif /* __POSIX_VISIBLE >= 199309 */
171
0d5acd74 172#if __POSIX_VISIBLE >= 199506
d33005aa 173char *asctime_r(const struct tm * __restrict, char * __restrict);
0d5acd74 174char *ctime_r(const time_t *, char *);
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175struct tm *gmtime_r(const time_t * __restrict, struct tm * __restrict);
176struct tm *localtime_r(const time_t * __restrict, struct tm * __restrict);
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177#endif
178
dd8f8e17 179#if __POSIX_VISIBLE >= 200112
725edadf 180int clock_getcpuclockid(pid_t, clockid_t *);
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181#if 0 /* XXX missing */
182struct sigevent;
83c8b58d 183int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *);
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184int timer_create(clockid_t, struct sigevent *__restrict, timer_t *__restrict);
185int timer_delete(timer_t);
186int timer_gettime(timer_t, struct itimerspec *);
187int timer_getoverrun(timer_t);
188int timer_settime(timer_t, int, const struct itimerspec *__restrict,
189 struct itimerspec *__restrict);
190#endif
191#endif
192
62a16a89 193#if __XSI_VISIBLE
7d013f97 194extern int daylight;
28bfdfe6 195extern int getdate_err;
7d013f97 196extern long timezone;
28bfdfe6 197struct tm *getdate(const char *) __strftimelike(1, 0);
0d5acd74 198char *strptime(const char * __restrict, const char * __restrict,
ec755e18 199 struct tm * __restrict) __strftimelike(2, 0);
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200#endif
201
202#if __BSD_VISIBLE
725edadf 203int getcpuclockid(pid_t, lwpid_t, clockid_t *);
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204void tzsetwall(void);
205time_t timelocal(struct tm * const);
206time_t timegm(struct tm * const);
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207time_t time2posix(time_t);
208time_t posix2time(time_t);
209struct tm *offtime(const time_t * const, const long);
210time_t timeoff(struct tm * const, const long);
62a16a89 211#endif /* __BSD_VISIBLE */
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212
213#if __POSIX_VISIBLE >= 200809 || defined(_XLOCALE_H_)
214#include <xlocale/_time.h>
215#endif
6219de94 216
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217#if __ISO_C_VISIBLE >= 2011 || (defined(__cplusplus) && __cplusplus >= 201703)
218#include <sys/_timespec.h>
219#define TIME_UTC 1
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220int timespec_get(struct timespec *ts, int base);
221#endif
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222__END_DECLS
223
224#endif /* !_TIME_H_ */