xref: /freebsd/include/time.h (revision 380a989b3223d455375b4fae70fd0b9bdd43bafb)
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 
44 #include <machine/ansi.h>
45 #include <sys/_posix.h>
46 
47 #ifndef _ANSI_SOURCE
48 /*
49  * Frequency of the clock ticks reported by times().  Deprecated - use
50  * sysconf(_SC_CLK_TCK) instead.
51  */
52 #define	CLK_TCK		_BSD_CLK_TCK_
53 #endif
54 
55 /* Frequency of the clock ticks reported by clock().  */
56 #define	CLOCKS_PER_SEC	_BSD_CLOCKS_PER_SEC_
57 
58 #ifndef	NULL
59 #define	NULL	0
60 #endif
61 
62 #ifdef	_BSD_CLOCK_T_
63 typedef	_BSD_CLOCK_T_	clock_t;
64 #undef	_BSD_CLOCK_T_
65 #endif
66 
67 #ifdef	_BSD_TIME_T_
68 typedef	_BSD_TIME_T_	time_t;
69 #undef	_BSD_TIME_T_
70 #endif
71 
72 #ifdef	_BSD_SIZE_T_
73 typedef	_BSD_SIZE_T_	size_t;
74 #undef	_BSD_SIZE_T_
75 #endif
76 
77 /* XXX I'm not sure if _ANSI_SOURCE is playing properly
78  *     with the setups in _posix.h:
79  */
80 #if !defined(_ANSI_SOURCE) && defined(_P1003_1B_VISIBLE_HISTORICALLY)
81 /*
82  * New in POSIX 1003.1b-1993.
83  */
84 #ifdef	_BSD_CLOCKID_T_
85 typedef	_BSD_CLOCKID_T_	clockid_t;
86 #undef	_BSD_CLOCKID_T_
87 #endif
88 
89 #ifdef	_BSD_TIMER_T_
90 typedef	_BSD_TIMER_T_	timer_t;
91 #undef	_BSD_TIMER_T_
92 #endif
93 
94 #ifndef _TIMESPEC_DECLARED
95 #define _TIMESPEC_DECLARED
96 struct timespec {
97 	time_t	tv_sec;		/* seconds */
98 	long	tv_nsec;	/* and nanoseconds */
99 };
100 #endif
101 #endif /* Neither ANSI nor POSIX */
102 
103 struct tm {
104 	int	tm_sec;		/* seconds after the minute [0-60] */
105 	int	tm_min;		/* minutes after the hour [0-59] */
106 	int	tm_hour;	/* hours since midnight [0-23] */
107 	int	tm_mday;	/* day of the month [1-31] */
108 	int	tm_mon;		/* months since January [0-11] */
109 	int	tm_year;	/* years since 1900 */
110 	int	tm_wday;	/* days since Sunday [0-6] */
111 	int	tm_yday;	/* days since January 1 [0-365] */
112 	int	tm_isdst;	/* Daylight Savings Time flag */
113 	long	tm_gmtoff;	/* offset from CUT in seconds */
114 	char	*tm_zone;	/* timezone abbreviation */
115 };
116 
117 #include <sys/cdefs.h>
118 
119 #ifndef	_ANSI_SOURCE
120 extern char *tzname[];
121 #endif
122 
123 __BEGIN_DECLS
124 char *asctime __P((const struct tm *));
125 clock_t clock __P((void));
126 char *ctime __P((const time_t *));
127 double difftime __P((time_t, time_t));
128 struct tm *gmtime __P((const time_t *));
129 struct tm *localtime __P((const time_t *));
130 time_t mktime __P((struct tm *));
131 size_t strftime __P((char *, size_t, const char *, const struct tm *));
132 time_t time __P((time_t *));
133 
134 #ifndef _ANSI_SOURCE
135 void tzset __P((void));
136 #endif /* not ANSI */
137 
138 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
139 char *asctime_r __P((const struct tm *, char *));
140 char *ctime_r __P((const time_t *, char *));
141 struct tm *gmtime_r __P((const time_t *, struct tm *));
142 struct tm *localtime_r __P((const time_t *, struct tm *));
143 char *strptime __P((const char *, const char *, struct tm *));
144 char *timezone __P((int, int));
145 void tzsetwall __P((void));
146 time_t timelocal __P((struct tm * const));
147 time_t timegm __P((struct tm * const));
148 #endif /* neither ANSI nor POSIX */
149 
150 #if !defined(_ANSI_SOURCE) && defined(_P1003_1B_VISIBLE_HISTORICALLY)
151 /* Introduced in POSIX 1003.1b-1993, not part of 1003.1-1990. */
152 int clock_getres __P((clockid_t, struct timespec *));
153 int clock_gettime __P((clockid_t, struct timespec *));
154 int clock_settime __P((clockid_t, const struct timespec *));
155 int nanosleep __P((const struct timespec *, struct timespec *));
156 #endif /* neither ANSI nor POSIX */
157 __END_DECLS
158 
159 #endif /* !_TIME_H_ */
160