time.h revision a27d2baa0c1a2ec70f47ea9199b1dd6762c8a349 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28#ifndef _TIME_H_
29#define _TIME_H_
30
31#include <sys/cdefs.h>
32#include <sys/time.h>
33
34#define __ARCH_SI_UID_T __kernel_uid32_t
35#include <asm/siginfo.h>
36#undef __ARCH_SI_UID_T
37
38__BEGIN_DECLS
39
40extern time_t   time(time_t *);
41extern int      nanosleep(const struct timespec *, struct timespec *);
42
43extern char *strtotimeval(const char *str, struct timeval *tv);
44
45struct tm {
46   int     tm_sec;         /* seconds */
47   int     tm_min;         /* minutes */
48   int     tm_hour;        /* hours */
49   int     tm_mday;        /* day of the month */
50   int     tm_mon;         /* month */
51   int     tm_year;        /* year */
52   int     tm_wday;        /* day of the week */
53   int     tm_yday;        /* day in the year */
54   int     tm_isdst;       /* daylight saving time */
55
56   long int tm_gmtoff;     /* Seconds east of UTC.  */
57   const char *tm_zone;    /* Timezone abbreviation.  */
58
59};
60
61/* defining TM_ZONE indicates that we have a "timezone abbreviation" field in
62 * struct tm, the value should be the field name
63 */
64#define   TM_ZONE   tm_zone
65
66extern char* asctime(const struct tm* a);
67
68/* Return the difference between TIME1 and TIME0.  */
69extern double difftime (time_t __time1, time_t __time0);
70extern time_t mktime (struct tm *a);
71
72extern struct tm*  localtime(const time_t *t);
73extern struct tm*  localtime_r(const time_t *timep, struct tm *result);
74
75extern struct tm*  gmtime(const time_t *timep);
76extern struct tm*  gmtime_r(const time_t *timep, struct tm *result);
77
78extern char*       strptime(const char *buf, const char *fmt, struct tm *tm);
79extern size_t      strftime(char *s, size_t max, const char *format, const struct tm *tm);
80
81extern char *ctime(const time_t *timep);
82extern char *ctime_r(const time_t *timep, char *buf);
83
84/* global includes */
85extern char*     tzname[];
86extern int       daylight;
87extern long int  timezone;
88
89#define CLOCKS_PER_SEC     1000000
90
91extern clock_t   clock();
92
93/* BIONIC: extra linux clock goodies */
94extern int clock_getres(int, struct timespec *);
95extern int clock_gettime(int, struct timespec *);
96
97#define CLOCK_REALTIME             0
98#define CLOCK_MONOTONIC            1
99#define CLOCK_PROCESS_CPUTIME_ID   2
100#define CLOCK_THREAD_CPUTIME_ID    3
101#define CLOCK_REALTIME_HR          4
102#define CLOCK_MONOTONIC_HR         5
103
104extern int  timer_create(int, struct sigevent*, timer_t*);
105extern int  timer_delete(timer_t);
106extern int  timer_settime(timer_t timerid, int flags, const struct itimerspec *value, struct itimerspec *ovalue);
107extern int  timer_gettime(timer_t timerid, struct itimerspec *value);
108extern int  timer_getoverrun(timer_t  timerid);
109
110__END_DECLS
111
112#endif /* _TIME_H_ */
113