xref: /freebsd/include/time.h (revision 42c159fe388a3765f69860c84183700af37aca8a)
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 /*
42  * $FreeBSD$
43  */
44 
45 #ifndef _TIME_H_
46 #define	_TIME_H_
47 
48 #include <machine/ansi.h>
49 #include <sys/_posix.h>
50 
51 #ifndef _ANSI_SOURCE
52 /*
53  * Frequency of the clock ticks reported by times().  Deprecated - use
54  * sysconf(_SC_CLK_TCK) instead.
55  */
56 #define	CLK_TCK		_BSD_CLK_TCK_
57 #endif
58 
59 /* Frequency of the clock ticks reported by clock().  */
60 #define	CLOCKS_PER_SEC	_BSD_CLOCKS_PER_SEC_
61 
62 #ifndef	NULL
63 #define	NULL	0
64 #endif
65 
66 #ifdef	_BSD_CLOCK_T_
67 typedef	_BSD_CLOCK_T_	clock_t;
68 #undef	_BSD_CLOCK_T_
69 #endif
70 
71 #ifdef	_BSD_TIME_T_
72 typedef	_BSD_TIME_T_	time_t;
73 #undef	_BSD_TIME_T_
74 #endif
75 
76 #ifdef	_BSD_SIZE_T_
77 typedef	_BSD_SIZE_T_	size_t;
78 #undef	_BSD_SIZE_T_
79 #endif
80 
81 /* XXX I'm not sure if _ANSI_SOURCE is playing properly
82  *     with the setups in _posix.h:
83  */
84 #if !defined(_ANSI_SOURCE) && defined(_P1003_1B_VISIBLE_HISTORICALLY)
85 /*
86  * New in POSIX 1003.1b-1993.
87  */
88 #ifdef	_BSD_CLOCKID_T_
89 typedef	_BSD_CLOCKID_T_	clockid_t;
90 #undef	_BSD_CLOCKID_T_
91 #endif
92 
93 #ifdef	_BSD_TIMER_T_
94 typedef	_BSD_TIMER_T_	timer_t;
95 #undef	_BSD_TIMER_T_
96 #endif
97 
98 #ifndef _TIMESPEC_DECLARED
99 #define _TIMESPEC_DECLARED
100 struct timespec {
101 	time_t	tv_sec;		/* seconds */
102 	long	tv_nsec;	/* and nanoseconds */
103 };
104 #endif
105 #endif /* Neither ANSI nor POSIX */
106 
107 struct tm {
108 	int	tm_sec;		/* seconds after the minute [0-60] */
109 	int	tm_min;		/* minutes after the hour [0-59] */
110 	int	tm_hour;	/* hours since midnight [0-23] */
111 	int	tm_mday;	/* day of the month [1-31] */
112 	int	tm_mon;		/* months since January [0-11] */
113 	int	tm_year;	/* years since 1900 */
114 	int	tm_wday;	/* days since Sunday [0-6] */
115 	int	tm_yday;	/* days since January 1 [0-365] */
116 	int	tm_isdst;	/* Daylight Savings Time flag */
117 	long	tm_gmtoff;	/* offset from UTC in seconds */
118 	char	*tm_zone;	/* timezone abbreviation */
119 };
120 
121 #include <sys/cdefs.h>
122 
123 #ifndef	_ANSI_SOURCE
124 extern char *tzname[];
125 #endif
126 
127 __BEGIN_DECLS
128 char *asctime(const struct tm *);
129 clock_t clock(void);
130 char *ctime(const time_t *);
131 double difftime(time_t, time_t);
132 struct tm *gmtime(const time_t *);
133 struct tm *localtime(const time_t *);
134 time_t mktime(struct tm *);
135 size_t strftime(char *, size_t, const char *, const struct tm *);
136 time_t time(time_t *);
137 
138 #ifndef _ANSI_SOURCE
139 time_t _time32_to_time(__int32_t t32);
140 __int32_t _time_to_time32(time_t t);
141 time_t _time64_to_time(__int64_t t64);
142 __int64_t _time_to_time64(time_t t);
143 long _time_to_long(time_t t);
144 time_t _long_to_time(long tlong);
145 int _time_to_int(time_t t);
146 time_t _int_to_time(int tint);
147 #endif /* not ANSI */
148 
149 #ifndef _ANSI_SOURCE
150 void tzset(void);
151 #endif /* not ANSI */
152 
153 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
154 char *asctime_r(const struct tm *, char *);
155 char *ctime_r(const time_t *, char *);
156 struct tm *gmtime_r(const time_t *, struct tm *);
157 struct tm *localtime_r(const time_t *, struct tm *);
158 char *strptime(const char *, const char *, struct tm *);
159 char *timezone(int, int);
160 void tzsetwall(void);
161 time_t timelocal(struct tm * const);
162 time_t timegm(struct tm * const);
163 #endif /* neither ANSI nor POSIX */
164 
165 #if !defined(_ANSI_SOURCE) && defined(_P1003_1B_VISIBLE_HISTORICALLY)
166 /* Introduced in POSIX 1003.1b-1993, not part of 1003.1-1990. */
167 int clock_getres(clockid_t, struct timespec *);
168 int clock_gettime(clockid_t, struct timespec *);
169 int clock_settime(clockid_t, const struct timespec *);
170 int nanosleep(const struct timespec *, struct timespec *);
171 #endif /* neither ANSI nor POSIX */
172 __END_DECLS
173 
174 #endif /* !_TIME_H_ */
175