kernel: Adjust some comments to the unionfs removal.
[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>
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45#include <sys/_null.h>
46#include <sys/types.h>
984263bc 47
62a16a89 48#if __POSIX_VISIBLE > 0 && __POSIX_VISIBLE < 200112 || __BSD_VISIBLE
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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(). */
881c8427 57#define CLOCKS_PER_SEC 128
984263bc 58
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59#ifndef _CLOCK_T_DECLARED
60#define _CLOCK_T_DECLARED
e2565a42 61typedef __clock_t clock_t;
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62#endif
63
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64#ifndef _TIME_T_DECLARED
65#define _TIME_T_DECLARED
e2565a42 66typedef __time_t time_t;
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67#endif
68
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69#ifndef _SIZE_T_DECLARED
70#define _SIZE_T_DECLARED
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 */
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78#ifndef _CLOCKID_T_DECLARED
79#define _CLOCKID_T_DECLARED
e2565a42 80typedef __clockid_t clockid_t;
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81#endif
82
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83#ifndef _TIMER_T_DECLARED
84#define _TIMER_T_DECLARED
e2565a42 85typedef __timer_t timer_t;
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86#endif
87
0d5acd74 88#include <sys/timespec.h>
1d3685c4 89
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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/* These macros are also in sys/time.h. */
100#if !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 200112
91810a6f 101#define CLOCK_REALTIME 0
62a16a89 102#ifdef __BSD_VISIBLE
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103#define CLOCK_VIRTUAL 1
104#define CLOCK_PROF 2
62a16a89 105#endif
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106#define CLOCK_MONOTONIC 4
107#define CLOCK_UPTIME 5 /* FreeBSD-specific. */
108#define CLOCK_UPTIME_PRECISE 7 /* FreeBSD-specific. */
109#define CLOCK_UPTIME_FAST 8 /* FreeBSD-specific. */
110#define CLOCK_REALTIME_PRECISE 9 /* FreeBSD-specific. */
111#define CLOCK_REALTIME_FAST 10 /* FreeBSD-specific. */
112#define CLOCK_MONOTONIC_PRECISE 11 /* FreeBSD-specific. */
113#define CLOCK_MONOTONIC_FAST 12 /* FreeBSD-specific. */
114#define CLOCK_SECOND 13 /* FreeBSD-specific. */
115#define CLOCK_THREAD_CPUTIME_ID 14
116#define CLOCK_PROCESS_CPUTIME_ID 15
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117#endif /* !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 200112 */
118
119#if !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 200112
120#if __BSD_VISIBLE
121#define TIMER_RELTIME 0x0 /* relative timer */
122#endif
123#define TIMER_ABSTIME 0x1 /* absolute timer */
0d5acd74 124#endif /* !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 200112 */
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125
126struct tm {
127 int tm_sec; /* seconds after the minute [0-60] */
128 int tm_min; /* minutes after the hour [0-59] */
129 int tm_hour; /* hours since midnight [0-23] */
130 int tm_mday; /* day of the month [1-31] */
131 int tm_mon; /* months since January [0-11] */
132 int tm_year; /* years since 1900 */
133 int tm_wday; /* days since Sunday [0-6] */
134 int tm_yday; /* days since January 1 [0-365] */
135 int tm_isdst; /* Daylight Savings Time flag */
0d5acd74 136 long tm_gmtoff; /* offset from UTC in seconds */
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137 char *tm_zone; /* timezone abbreviation */
138};
139
62a16a89 140#if __POSIX_VISIBLE
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141extern char *tzname[];
142#endif
143
144__BEGIN_DECLS
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145char *asctime(const struct tm *);
146clock_t clock(void);
147char *ctime(const time_t *);
148double difftime(time_t, time_t);
149/* XXX missing: getdate() */
150struct tm *gmtime(const time_t *);
151struct tm *localtime(const time_t *);
152time_t mktime(struct tm *);
153size_t strftime(char * __restrict, size_t, const char * __restrict,
154 const struct tm * __restrict);
155time_t time(time_t *);
a8e68404 156#if 0 /* XXX missing */
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157#if __POSIX_VISIBLE >= 200112
158struct sigevent;
159int timer_create(clockid_t, struct sigevent *__restrict, timer_t *__restrict);
160int timer_delete(timer_t);
161int timer_gettime(timer_t, struct itimerspec *);
162int timer_getoverrun(timer_t);
163int timer_settime(timer_t, int, const struct itimerspec *__restrict,
164 struct itimerspec *__restrict);
62a16a89 165#endif
a8e68404 166#endif
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167#if __POSIX_VISIBLE
168void tzset(void);
62a16a89 169#endif
984263bc 170
62a16a89 171#if __POSIX_VISIBLE >= 199309
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172int clock_getres(clockid_t, struct timespec *);
173int clock_gettime(clockid_t, struct timespec *);
174int clock_settime(clockid_t, const struct timespec *);
175/* XXX missing: clock_nanosleep() */
176int nanosleep(const struct timespec *, struct timespec *);
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177#endif /* __POSIX_VISIBLE >= 199309 */
178
a8e68404 179#if 0 /* XXX missing */
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180#if __POSIX_VISIBLE >= 200112
181int clock_getcpuclockid(pid_t, clockid_t *);
182#endif
a8e68404 183#endif
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184
185#if __POSIX_VISIBLE >= 199506
186char *asctime_r(const struct tm *, char *);
187char *ctime_r(const time_t *, char *);
188struct tm *gmtime_r(const time_t *, struct tm *);
189struct tm *localtime_r(const time_t *, struct tm *);
190#endif
191
62a16a89 192#if __XSI_VISIBLE
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193extern int daylight;
194extern long timezone;
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195char *strptime(const char * __restrict, const char * __restrict,
196 struct tm * __restrict);
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197#endif
198
199#if __BSD_VISIBLE
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200void tzsetwall(void);
201time_t timelocal(struct tm * const);
202time_t timegm(struct tm * const);
62a16a89 203#endif /* __BSD_VISIBLE */
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204
205#if __POSIX_VISIBLE >= 200809 || defined(_XLOCALE_H_)
206#include <xlocale/_time.h>
207#endif
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208__END_DECLS
209
210#endif /* !_TIME_H_ */