kernel - Add additional clock_gettime() modes
[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.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * @(#)time.h 8.3 (Berkeley) 1/21/94
39 */
40
41#ifndef _TIME_H_
42#define _TIME_H_
43
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44#include <sys/cdefs.h>
45
e2565a42 46#include <machine/stdint.h>
e2565a42 47#include <machine/uvparam.h>
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48#include <sys/_posix.h>
49
62a16a89 50#if __POSIX_VISIBLE > 0 && __POSIX_VISIBLE < 200112 || __BSD_VISIBLE
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51/*
52 * Frequency of the clock ticks reported by times(). Deprecated - use
62a16a89 53 * sysconf(_SC_CLK_TCK) instead. (Removed in 1003.1-2001.)
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54 */
55#define CLK_TCK _BSD_CLK_TCK_
56#endif
57
58/* Frequency of the clock ticks reported by clock(). */
59#define CLOCKS_PER_SEC _BSD_CLOCKS_PER_SEC_
60
e4dcda4d 61#include <sys/_null.h>
984263bc 62
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63#ifndef _CLOCK_T_DECLARED
64#define _CLOCK_T_DECLARED
e2565a42 65typedef __clock_t clock_t;
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66#endif
67
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68#ifndef _TIME_T_DECLARED
69#define _TIME_T_DECLARED
e2565a42 70typedef __time_t time_t;
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71#endif
72
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73#ifndef _SIZE_T_DECLARED
74#define _SIZE_T_DECLARED
75typedef __size_t size_t;
76#endif
77
78#if __POSIX_VISIBLE >= 199309
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79/*
80 * New in POSIX 1003.1b-1993.
81 */
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82#ifndef _CLOCKID_T_DECLARED
83#define _CLOCKID_T_DECLARED
e2565a42 84typedef __clockid_t clockid_t;
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85#endif
86
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87#ifndef _TIMER_T_DECLARED
88#define _TIMER_T_DECLARED
e2565a42 89typedef __timer_t timer_t;
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90#endif
91
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92#include <sys/_timespec.h>
93
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94#endif /* __POSIX_VISIBLE >= 199309 */
95
96/* These macros are also in sys/time.h. */
97#if !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 200112
91810a6f 98#define CLOCK_REALTIME 0
62a16a89 99#ifdef __BSD_VISIBLE
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100#define CLOCK_VIRTUAL 1
101#define CLOCK_PROF 2
62a16a89 102#endif
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103#define CLOCK_MONOTONIC 4 /* from freebsd */
104#define CLOCK_UPTIME 5 /* from freebsd */
105#define CLOCK_UPTIME_PRECISE 7 /* from freebsd */
106#define CLOCK_UPTIME_FAST 8 /* from freebsd */
107#define CLOCK_REALTIME_PRECISE 9 /* from freebsd */
108#define CLOCK_REALTIME_FAST 10 /* from freebsd */
109#define CLOCK_MONOTONIC_PRECISE 11 /* from freebsd */
110#define CLOCK_MONOTONIC_FAST 12 /* from freebsd */
111#define CLOCK_SECOND 13 /* from freebsd */
112
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113#endif /* !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 200112 */
114
115#if !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 200112
116#if __BSD_VISIBLE
117#define TIMER_RELTIME 0x0 /* relative timer */
118#endif
119#define TIMER_ABSTIME 0x1 /* absolute timer */
120#endif
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121
122struct tm {
123 int tm_sec; /* seconds after the minute [0-60] */
124 int tm_min; /* minutes after the hour [0-59] */
125 int tm_hour; /* hours since midnight [0-23] */
126 int tm_mday; /* day of the month [1-31] */
127 int tm_mon; /* months since January [0-11] */
128 int tm_year; /* years since 1900 */
129 int tm_wday; /* days since Sunday [0-6] */
130 int tm_yday; /* days since January 1 [0-365] */
131 int tm_isdst; /* Daylight Savings Time flag */
132 long tm_gmtoff; /* offset from CUT in seconds */
133 char *tm_zone; /* timezone abbreviation */
134};
135
62a16a89 136#if __POSIX_VISIBLE
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137extern char *tzname[];
138#endif
139
140__BEGIN_DECLS
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141char *asctime (const struct tm *);
142clock_t clock (void);
143char *ctime (const time_t *);
144double difftime (time_t, time_t);
145struct tm *gmtime (const time_t *);
146struct tm *localtime (const time_t *);
147time_t mktime (struct tm *);
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148size_t strftime (char * __restrict, size_t, const char * __restrict,
149 const struct tm * __restrict);
7c4af8e1 150time_t time (time_t *);
984263bc 151
62a16a89 152#if __POSIX_VISIBLE
7c4af8e1 153void tzset (void);
62a16a89 154#endif
984263bc 155
62a16a89 156#if __POSIX_VISIBLE >= 199506
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157char *asctime_r (const struct tm *, char *);
158char *ctime_r (const time_t *, char *);
159struct tm *gmtime_r (const time_t *, struct tm *);
160struct tm *localtime_r (const time_t *, struct tm *);
62a16a89 161#endif
984263bc 162
62a16a89 163#if __POSIX_VISIBLE >= 199309
984263bc 164/* Introduced in POSIX 1003.1b-1993, not part of 1003.1-1990. */
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165int clock_getres (clockid_t, struct timespec *);
166int clock_gettime (clockid_t, struct timespec *);
167int clock_settime (clockid_t, const struct timespec *);
168int nanosleep (const struct timespec *, struct timespec *);
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169#endif /* __POSIX_VISIBLE >= 199309 */
170
171#if __XSI_VISIBLE
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172extern int daylight;
173extern long timezone;
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174char *strptime (const char * __restrict, const char * __restrict,
175 struct tm * __restrict);
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176#endif
177
178#if __BSD_VISIBLE
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179void tzsetwall (void);
180time_t timelocal (struct tm * const);
181time_t timegm (struct tm * const);
182#endif /* __BSD_VISIBLE */
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183__END_DECLS
184
185#endif /* !_TIME_H_ */