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.
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11 * modification, are permitted provided that the following conditions
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
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17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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34 * @(#)time.h 8.3 (Berkeley) 1/21/94
44 #include <sys/cdefs.h>
45 #include <sys/_null.h>
46 #include <sys/_types.h>
48 #if __POSIX_VISIBLE > 0 && __POSIX_VISIBLE < 200112 || __BSD_VISIBLE
50 * Frequency of the clock ticks reported by times(). Deprecated - use
51 * sysconf(_SC_CLK_TCK) instead. (Removed in 1003.1-2001.)
56 /* Frequency of the clock ticks reported by clock(). */
57 #define CLOCKS_PER_SEC 128
59 #ifndef _CLOCK_T_DECLARED
60 typedef __clock_t clock_t;
61 #define _CLOCK_T_DECLARED
64 #ifndef _TIME_T_DECLARED
65 typedef __time_t time_t;
66 #define _TIME_T_DECLARED
69 #ifndef _SIZE_T_DECLARED
70 typedef __size_t size_t;
71 #define _SIZE_T_DECLARED
74 #if __POSIX_VISIBLE >= 199309
76 * New in POSIX 1003.1b-1993.
78 #ifndef _CLOCKID_T_DECLARED
79 typedef __clockid_t clockid_t;
80 #define _CLOCKID_T_DECLARED
83 #ifndef _TIMER_T_DECLARED
84 typedef __timer_t timer_t;
85 #define _TIMER_T_DECLARED
88 #include <sys/timespec.h>
89 #endif /* __POSIX_VISIBLE >= 199309 */
91 /* These macros are also in sys/time.h. */
92 #if !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 200112
93 #define CLOCK_REALTIME 0
95 #define CLOCK_VIRTUAL 1
98 #define CLOCK_MONOTONIC 4
99 #define CLOCK_UPTIME 5 /* FreeBSD-specific. */
100 #define CLOCK_UPTIME_PRECISE 7 /* FreeBSD-specific. */
101 #define CLOCK_UPTIME_FAST 8 /* FreeBSD-specific. */
102 #define CLOCK_REALTIME_PRECISE 9 /* FreeBSD-specific. */
103 #define CLOCK_REALTIME_FAST 10 /* FreeBSD-specific. */
104 #define CLOCK_MONOTONIC_PRECISE 11 /* FreeBSD-specific. */
105 #define CLOCK_MONOTONIC_FAST 12 /* FreeBSD-specific. */
106 #define CLOCK_SECOND 13 /* FreeBSD-specific. */
107 #define CLOCK_THREAD_CPUTIME_ID 14
108 #define CLOCK_PROCESS_CPUTIME_ID 15
109 #endif /* !defined(CLOCK_REALTIME) && __POSIX_VISIBLE >= 200112 */
111 #if !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 200112
113 #define TIMER_RELTIME 0x0 /* relative timer */
115 #define TIMER_ABSTIME 0x1 /* absolute timer */
116 #endif /* !defined(TIMER_ABSTIME) && __POSIX_VISIBLE >= 200112 */
119 int tm_sec; /* seconds after the minute [0-60] */
120 int tm_min; /* minutes after the hour [0-59] */
121 int tm_hour; /* hours since midnight [0-23] */
122 int tm_mday; /* day of the month [1-31] */
123 int tm_mon; /* months since January [0-11] */
124 int tm_year; /* years since 1900 */
125 int tm_wday; /* days since Sunday [0-6] */
126 int tm_yday; /* days since January 1 [0-365] */
127 int tm_isdst; /* Daylight Savings Time flag */
128 long tm_gmtoff; /* offset from UTC in seconds */
129 char *tm_zone; /* timezone abbreviation */
133 extern char *tzname[];
137 char *asctime(const struct tm *);
139 char *ctime(const time_t *);
140 double difftime(time_t, time_t);
141 /* XXX missing: getdate() */
142 struct tm *gmtime(const time_t *);
143 struct tm *localtime(const time_t *);
144 time_t mktime(struct tm *);
145 size_t strftime(char * __restrict, size_t, const char * __restrict,
146 const struct tm * __restrict);
147 time_t time(time_t *);
148 #if __POSIX_VISIBLE >= 200112
150 int timer_create(clockid_t, struct sigevent *__restrict, timer_t *__restrict);
151 int timer_delete(timer_t);
152 int timer_gettime(timer_t, struct itimerspec *);
153 int timer_getoverrun(timer_t);
154 int timer_settime(timer_t, int, const struct itimerspec *__restrict,
155 struct itimerspec *__restrict);
161 #if __POSIX_VISIBLE >= 199309
162 int clock_getres(clockid_t, struct timespec *);
163 int clock_gettime(clockid_t, struct timespec *);
164 int clock_settime(clockid_t, const struct timespec *);
165 /* XXX missing: clock_nanosleep() */
166 int nanosleep(const struct timespec *, struct timespec *);
167 #endif /* __POSIX_VISIBLE >= 199309 */
169 #if __POSIX_VISIBLE >= 199506
170 char *asctime_r(const struct tm *, char *);
171 char *ctime_r(const time_t *, char *);
172 struct tm *gmtime_r(const time_t *, struct tm *);
173 struct tm *localtime_r(const time_t *, struct tm *);
177 char *strptime(const char * __restrict, const char * __restrict,
178 struct tm * __restrict);
182 char *timezone(int, int); /* XXX XSI conflict */
183 void tzsetwall(void);
184 time_t timelocal(struct tm * const);
185 time_t timegm(struct tm * const);
186 #endif /* __BSD_VISIBLE */
188 #if __POSIX_VISIBLE >= 200809 || defined(_XLOCALE_H_)
189 #include <xlocale/_time.h>
193 #endif /* !_TIME_H_ */