<time.h>: Provide time2posix(), posix2time() prototypes.
[dragonfly.git] / include / time.h
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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>
89393d93 46#include <sys/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#elif __ISO_C_VISIBLE >= 2011
89#include <sys/_timespec.h>
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90#endif /* __POSIX_VISIBLE >= 199309 */
91
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92#if __POSIX_VISIBLE >= 200112
93#ifndef _PID_T_DECLARED
94#define _PID_T_DECLARED
95typedef __pid_t pid_t;
96#endif
97#endif
98
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99#if __BSD_VISIBLE
100#ifndef _LWPID_T_DECLARED
101#define _LWPID_T_DECLARED
102typedef __pid_t lwpid_t; /* light weight process id */
103#endif
104#endif
105
62a16a89 106/* These macros are also in sys/time.h. */
94c1145b 107#if !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 199309
4b68a649 108#define CLOCK_REALTIME 0
f33ef0a8 109#if __BSD_VISIBLE
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110#define CLOCK_VIRTUAL 1
111#define CLOCK_PROF 2
62a16a89 112#endif
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113#define CLOCK_MONOTONIC 4
114#define CLOCK_UPTIME 5 /* FreeBSD-specific. */
115#define CLOCK_UPTIME_PRECISE 7 /* FreeBSD-specific. */
116#define CLOCK_UPTIME_FAST 8 /* FreeBSD-specific. */
117#define CLOCK_REALTIME_PRECISE 9 /* FreeBSD-specific. */
118#define CLOCK_REALTIME_FAST 10 /* FreeBSD-specific. */
119#define CLOCK_MONOTONIC_PRECISE 11 /* FreeBSD-specific. */
120#define CLOCK_MONOTONIC_FAST 12 /* FreeBSD-specific. */
121#define CLOCK_SECOND 13 /* FreeBSD-specific. */
122#define CLOCK_THREAD_CPUTIME_ID 14
0d5acd74 123#define CLOCK_PROCESS_CPUTIME_ID 15
94c1145b 124#endif /* !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 199309 */
62a16a89 125
94c1145b 126#if !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 199309
62a16a89 127#if __BSD_VISIBLE
4b68a649 128#define TIMER_RELTIME 0x0 /* relative timer */
62a16a89 129#endif
4b68a649 130#define TIMER_ABSTIME 0x1 /* absolute timer */
94c1145b 131#endif /* !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 199309 */
984263bc 132
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133#if __ISO_C_VISIBLE >= 2011
134/* for timespec_get() */
f6fab63a 135#define TIME_UTC 1
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136#endif
137
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138struct tm {
139 int tm_sec; /* seconds after the minute [0-60] */
140 int tm_min; /* minutes after the hour [0-59] */
141 int tm_hour; /* hours since midnight [0-23] */
142 int tm_mday; /* day of the month [1-31] */
143 int tm_mon; /* months since January [0-11] */
144 int tm_year; /* years since 1900 */
145 int tm_wday; /* days since Sunday [0-6] */
146 int tm_yday; /* days since January 1 [0-365] */
147 int tm_isdst; /* Daylight Savings Time flag */
0d5acd74 148 long tm_gmtoff; /* offset from UTC in seconds */
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149 char *tm_zone; /* timezone abbreviation */
150};
151
62a16a89 152#if __POSIX_VISIBLE
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153extern char *tzname[];
154#endif
155
156__BEGIN_DECLS
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157char *asctime(const struct tm *);
158clock_t clock(void);
159char *ctime(const time_t *);
160double difftime(time_t, time_t);
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161#if 0 /* XXX missing */
162struct tm *getdate(const char *);
163#endif
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164struct tm *gmtime(const time_t *);
165struct tm *localtime(const time_t *);
166time_t mktime(struct tm *);
167size_t strftime(char * __restrict, size_t, const char * __restrict,
c32cc5a0 168 const struct tm * __restrict) __strftimelike(3, 0);
0d5acd74 169time_t time(time_t *);
dd8f8e17 170
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171#if __POSIX_VISIBLE
172void tzset(void);
62a16a89 173#endif
984263bc 174
62a16a89 175#if __POSIX_VISIBLE >= 199309
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176int clock_getres(clockid_t, struct timespec *);
177int clock_gettime(clockid_t, struct timespec *);
178int clock_settime(clockid_t, const struct timespec *);
0d5acd74 179int nanosleep(const struct timespec *, struct timespec *);
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180#endif /* __POSIX_VISIBLE >= 199309 */
181
0d5acd74 182#if __POSIX_VISIBLE >= 199506
d33005aa 183char *asctime_r(const struct tm * __restrict, char * __restrict);
0d5acd74 184char *ctime_r(const time_t *, char *);
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185struct tm *gmtime_r(const time_t * __restrict, struct tm * __restrict);
186struct tm *localtime_r(const time_t * __restrict, struct tm * __restrict);
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187#endif
188
dd8f8e17 189#if __POSIX_VISIBLE >= 200112
725edadf 190int clock_getcpuclockid(pid_t, clockid_t *);
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191#if 0 /* XXX missing */
192struct sigevent;
83c8b58d 193int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *);
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194int timer_create(clockid_t, struct sigevent *__restrict, timer_t *__restrict);
195int timer_delete(timer_t);
196int timer_gettime(timer_t, struct itimerspec *);
197int timer_getoverrun(timer_t);
198int timer_settime(timer_t, int, const struct itimerspec *__restrict,
199 struct itimerspec *__restrict);
200#endif
201#endif
202
62a16a89 203#if __XSI_VISIBLE
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204extern int daylight;
205extern long timezone;
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206char *strptime(const char * __restrict, const char * __restrict,
207 struct tm * __restrict);
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208#endif
209
210#if __BSD_VISIBLE
725edadf 211int getcpuclockid(pid_t, lwpid_t, clockid_t *);
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212void tzsetwall(void);
213time_t timelocal(struct tm * const);
214time_t timegm(struct tm * const);
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215time_t time2posix(time_t);
216time_t posix2time(time_t);
217struct tm *offtime(const time_t * const, const long);
218time_t timeoff(struct tm * const, const long);
62a16a89 219#endif /* __BSD_VISIBLE */
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220
221#if __POSIX_VISIBLE >= 200809 || defined(_XLOCALE_H_)
222#include <xlocale/_time.h>
223#endif
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224
225#if __ISO_C_VISIBLE >= 2011
226int timespec_get(struct timespec *ts, int base);
227#endif
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228__END_DECLS
229
230#endif /* !_TIME_H_ */