source: svn/trunk/newcon3bcm2_21bu/toolchain/mips-linux-uclibc/include/time.h @ 8

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1/* Copyright (C) 1991-1999,2000,2001,2002,2003 Free Software Foundation, Inc.
2   This file is part of the GNU C Library.
3
4   The GNU C Library is free software; you can redistribute it and/or
5   modify it under the terms of the GNU Lesser General Public
6   License as published by the Free Software Foundation; either
7   version 2.1 of the License, or (at your option) any later version.
8
9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, write to the Free
16   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17   02111-1307 USA.  */
18
19/*
20 *      ISO C99 Standard: 7.23 Date and time    <time.h>
21 */
22
23#ifndef _TIME_H
24
25#if (! defined __need_time_t && !defined __need_clock_t && \
26     ! defined __need_timespec)
27# define _TIME_H        1
28# include <features.h>
29
30__BEGIN_DECLS
31
32#endif
33
34#ifdef  _TIME_H
35/* Get size_t and NULL from <stddef.h>.  */
36# define __need_size_t
37# define __need_NULL
38# include <stddef.h>
39
40/* This defines CLOCKS_PER_SEC, which is the number of processor clock
41   ticks per second.  */
42# include <bits/time.h>
43
44/* This is the obsolete POSIX.1-1988 name for the same constant.  */
45# if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K
46#  ifndef CLK_TCK
47#   define CLK_TCK      CLOCKS_PER_SEC
48#  endif
49# endif
50
51#endif /* <time.h> included.  */
52
53#if !defined __clock_t_defined && (defined _TIME_H || defined __need_clock_t)
54# define __clock_t_defined      1
55
56# include <bits/types.h>
57
58__BEGIN_NAMESPACE_STD
59/* Returned by `clock'.  */
60typedef __clock_t clock_t;
61__END_NAMESPACE_STD
62#if defined __USE_XOPEN || defined __USE_POSIX || defined __USE_MISC
63__USING_NAMESPACE_STD(clock_t)
64#endif
65
66#endif /* clock_t not defined and <time.h> or need clock_t.  */
67#undef  __need_clock_t
68
69#if !defined __time_t_defined && (defined _TIME_H || defined __need_time_t)
70# define __time_t_defined       1
71
72# include <bits/types.h>
73
74__BEGIN_NAMESPACE_STD
75/* Returned by `time'.  */
76typedef __time_t time_t;
77__END_NAMESPACE_STD
78#if defined __USE_POSIX || defined __USE_MISC || defined __USE_SVID
79__USING_NAMESPACE_STD(time_t)
80#endif
81
82#endif /* time_t not defined and <time.h> or need time_t.  */
83#undef  __need_time_t
84
85#if !defined __clockid_t_defined && \
86   ((defined _TIME_H && defined __USE_POSIX199309) || defined __need_clockid_t)
87# define __clockid_t_defined    1
88
89# include <bits/types.h>
90
91/* Clock ID used in clock and timer functions.  */
92typedef __clockid_t clockid_t;
93
94#endif /* clockid_t not defined and <time.h> or need clockid_t.  */
95#undef  __clockid_time_t
96
97#if !defined __timer_t_defined && \
98    ((defined _TIME_H && defined __USE_POSIX199309) || defined __need_timer_t)
99# define __timer_t_defined      1
100
101# include <bits/types.h>
102
103/* Timer ID returned by `timer_create'.  */
104typedef __timer_t timer_t;
105
106#endif /* timer_t not defined and <time.h> or need timer_t.  */
107#undef  __need_timer_t
108
109
110#if !defined __timespec_defined &&                              \
111    ((defined _TIME_H &&                                        \
112      (defined __USE_POSIX199309 || defined __USE_MISC)) ||     \
113      defined __need_timespec)
114# define __timespec_defined     1
115
116/* POSIX.1b structure for a time value.  This is like a `struct timeval' but
117   has nanoseconds instead of microseconds.  */
118struct timespec
119  {
120    __time_t tv_sec;            /* Seconds.  */
121    long int tv_nsec;           /* Nanoseconds.  */
122  };
123
124#endif /* timespec not defined and <time.h> or need timespec.  */
125#undef  __need_timespec
126
127
128#ifdef  _TIME_H
129__BEGIN_NAMESPACE_STD
130/* Used by other time functions.  */
131struct tm
132{
133  int tm_sec;                   /* Seconds.     [0-60] (1 leap second) */
134  int tm_min;                   /* Minutes.     [0-59] */
135  int tm_hour;                  /* Hours.       [0-23] */
136  int tm_mday;                  /* Day.         [1-31] */
137  int tm_mon;                   /* Month.       [0-11] */
138  int tm_year;                  /* Year - 1900.  */
139  int tm_wday;                  /* Day of week. [0-6] */
140  int tm_yday;                  /* Days in year.[0-365] */
141  int tm_isdst;                 /* DST.         [-1/0/1]*/
142
143#ifdef __UCLIBC_HAS_TM_EXTENSIONS__
144#ifdef  __USE_BSD
145  long int tm_gmtoff;           /* Seconds east of UTC.  */
146  __const char *tm_zone;        /* Timezone abbreviation. */
147#else
148  long int __tm_gmtoff;         /* Seconds east of UTC.  */
149  __const char *__tm_zone;      /* Timezone abbreviation. */
150#endif
151#endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */
152};
153__END_NAMESPACE_STD
154#if defined __USE_XOPEN || defined __USE_POSIX || defined __USE_MISC
155__USING_NAMESPACE_STD(tm)
156#endif
157
158
159#ifdef __USE_POSIX199309
160/* POSIX.1b structure for timer start values and intervals.  */
161struct itimerspec
162  {
163    struct timespec it_interval;
164    struct timespec it_value;
165  };
166
167/* We can use a simple forward declaration.  */
168struct sigevent;
169
170#endif  /* POSIX.1b */
171
172#ifdef __USE_XOPEN2K
173# ifndef __pid_t_defined
174typedef __pid_t pid_t;
175#  define __pid_t_defined
176# endif
177#endif
178
179
180__BEGIN_NAMESPACE_STD
181/* Time used by the program so far (user time + system time).
182   The result / CLOCKS_PER_SECOND is program time in seconds.  */
183extern clock_t clock (void) __THROW;
184
185/* Return the current time and put it in *TIMER if TIMER is not NULL.  */
186extern time_t time (time_t *__timer) __THROW;
187
188#ifdef __UCLIBC_HAS_FLOATS__
189/* Return the difference between TIME1 and TIME0.  */
190extern double difftime (time_t __time1, time_t __time0)
191     __THROW __attribute__ ((__const__));
192#endif /* __UCLIBC_HAS_FLOATS__ */
193
194/* Return the `time_t' representation of TP and normalize TP.  */
195extern time_t mktime (struct tm *__tp) __THROW;
196
197
198/* Format TP into S according to FORMAT.
199   Write no more than MAXSIZE characters and return the number
200   of characters written, or 0 if it would exceed MAXSIZE.  */
201extern size_t strftime (char *__restrict __s, size_t __maxsize,
202                        __const char *__restrict __format,
203                        __const struct tm *__restrict __tp) __THROW;
204__END_NAMESPACE_STD
205
206# ifdef __USE_XOPEN
207/* Parse S according to FORMAT and store binary time information in TP.
208   The return value is a pointer to the first unparsed character in S.  */
209extern char *strptime (__const char *__restrict __s,
210                       __const char *__restrict __fmt, struct tm *__tp)
211     __THROW;
212# endif
213
214#ifdef __UCLIBC_HAS_XLOCALE__
215# ifdef __USE_GNU
216/* Similar to the two functions above but take the information from
217   the provided locale and not the global locale.  */
218# include <xlocale.h>
219
220extern size_t strftime_l (char *__restrict __s, size_t __maxsize,
221                          __const char *__restrict __format,
222                          __const struct tm *__restrict __tp,
223                          __locale_t __loc) __THROW;
224
225extern char *strptime_l (__const char *__restrict __s,
226                         __const char *__restrict __fmt, struct tm *__tp,
227                         __locale_t __loc) __THROW;
228
229
230extern size_t __strftime_l (char *__restrict __s, size_t __maxsize,
231                                                        __const char *__restrict __format,
232                                                        __const struct tm *__restrict __tp,
233                                                        __locale_t __loc) __THROW;
234
235extern char *__strptime_l (__const char *__restrict __s,
236                                                   __const char *__restrict __fmt, struct tm *__tp,
237                                                   __locale_t __loc) __THROW;
238
239# endif
240#endif
241
242
243__BEGIN_NAMESPACE_STD
244/* Return the `struct tm' representation of *TIMER
245   in Universal Coordinated Time (aka Greenwich Mean Time).  */
246extern struct tm *gmtime (__const time_t *__timer) __THROW;
247
248/* Return the `struct tm' representation
249   of *TIMER in the local timezone.  */
250extern struct tm *localtime (__const time_t *__timer) __THROW;
251__END_NAMESPACE_STD
252
253# if defined __USE_POSIX || defined __USE_MISC
254/* Return the `struct tm' representation of *TIMER in UTC,
255   using *TP to store the result.  */
256extern struct tm *gmtime_r (__const time_t *__restrict __timer,
257                            struct tm *__restrict __tp) __THROW;
258
259/* Return the `struct tm' representation of *TIMER in local time,
260   using *TP to store the result.  */
261extern struct tm *localtime_r (__const time_t *__restrict __timer,
262                               struct tm *__restrict __tp) __THROW;
263# endif /* POSIX or misc */
264
265__BEGIN_NAMESPACE_STD
266/* Return a string of the form "Day Mon dd hh:mm:ss yyyy\n"
267   that is the representation of TP in this format.  */
268extern char *asctime (__const struct tm *__tp) __THROW;
269
270/* Equivalent to `asctime (localtime (timer))'.  */
271extern char *ctime (__const time_t *__timer) __THROW;
272__END_NAMESPACE_STD
273
274# if defined __USE_POSIX || defined __USE_MISC
275/* Reentrant versions of the above functions.  */
276
277/* Return in BUF a string of the form "Day Mon dd hh:mm:ss yyyy\n"
278   that is the representation of TP in this format.  */
279extern char *asctime_r (__const struct tm *__restrict __tp,
280                        char *__restrict __buf) __THROW;
281
282/* Equivalent to `asctime_r (localtime_r (timer, *TMP*), buf)'.  */
283extern char *ctime_r (__const time_t *__restrict __timer,
284                      char *__restrict __buf) __THROW;
285# endif /* POSIX or misc */
286
287
288/* Defined in localtime.c.  */
289#ifdef __UCLIBC_MJN3_ONLY__
290#warning "mjn3 FIXME: __tzname, __daylight, and __timezone have a prototype but are not defined."
291extern char *__tzname[2];       /* Current timezone names.  */
292extern int __daylight;          /* If daylight-saving time is ever in use.  */
293extern long int __timezone;     /* Seconds west of UTC.  */
294#endif /* __UCLIBC_MJN3_ONLY__ */
295
296
297# ifdef __USE_POSIX
298/* Same as above.  */
299extern char *tzname[2];
300
301/* Set time conversion information from the TZ environment variable.
302   If TZ is not defined, a locale-dependent default is used.  */
303extern void tzset (void) __THROW;
304# endif
305
306# if defined __USE_SVID || defined __USE_XOPEN
307extern int daylight;
308extern long int timezone;
309# endif
310
311# ifdef __USE_SVID
312/* Set the system time to *WHEN.
313   This call is restricted to the superuser.  */
314extern int stime (__const time_t *__when) __THROW;
315# endif
316
317
318/* Nonzero if YEAR is a leap year (every 4 years,
319   except every 100th isn't, and every 400th is).  */
320# define __isleap(year) \
321  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
322
323
324# ifdef __USE_MISC
325/* Miscellaneous functions many Unices inherited from the public domain
326   localtime package.  These are included only for compatibility.  */
327
328/* Like `mktime', but for TP represents Universal Time, not local time.  */
329extern time_t timegm (struct tm *__tp) __THROW;
330
331/* Another name for `mktime'.  */
332extern time_t timelocal (struct tm *__tp) __THROW;
333
334/* Return the number of days in YEAR.  */
335extern int dysize (int __year) __THROW  __attribute__ ((__const__));
336# endif
337
338
339# ifdef __USE_POSIX199309
340/* Pause execution for a number of nanoseconds.
341
342   This function is a cancellation point and therefore not marked with
343   __THROW.  */
344extern int nanosleep (__const struct timespec *__requested_time,
345                      struct timespec *__remaining);
346
347
348/* Get resolution of clock CLOCK_ID.  */
349extern int clock_getres (clockid_t __clock_id, struct timespec *__res) __THROW;
350
351/* Get current value of clock CLOCK_ID and store it in TP.  */
352extern int clock_gettime (clockid_t __clock_id, struct timespec *__tp) __THROW;
353
354/* Set clock CLOCK_ID to value TP.  */
355extern int clock_settime (clockid_t __clock_id, __const struct timespec *__tp) __THROW;
356
357#ifdef __UCLIBC_MJN3_ONLY__
358#warning "mjn3 FIXME: a bunch of unimplemented function prototypes."
359#  ifdef __USE_XOPEN2K
360/* High-resolution sleep with the specified clock.
361
362   This function is a cancellation point and therefore not marked with
363   __THROW.  */
364extern int clock_nanosleep (clockid_t __clock_id, int __flags,
365                            __const struct timespec *__req,
366                            struct timespec *__rem);
367
368/* Return clock ID for CPU-time clock.  */
369extern int clock_getcpuclockid (pid_t __pid, clockid_t *__clock_id) __THROW;
370#  endif
371
372
373/* Create new per-process timer using CLOCK_ID.  */
374extern int timer_create (clockid_t __clock_id,
375                         struct sigevent *__restrict __evp,
376                         timer_t *__restrict __timerid) __THROW;
377
378/* Delete timer TIMERID.  */
379extern int timer_delete (timer_t __timerid) __THROW;
380
381/* Set timer TIMERID to VALUE, returning old value in OVLAUE.  */
382extern int timer_settime (timer_t __timerid, int __flags,
383                          __const struct itimerspec *__restrict __value,
384                          struct itimerspec *__restrict __ovalue) __THROW;
385
386/* Get current value of timer TIMERID and store it in VLAUE.  */
387extern int timer_gettime (timer_t __timerid, struct itimerspec *__value)
388     __THROW;
389
390/* Get expiration overrun for timer TIMERID.  */
391extern int timer_getoverrun (timer_t __timerid) __THROW;
392#endif /* __UCLIBC_MJN3_ONLY__ */
393# endif
394
395
396#ifdef __UCLIBC_MJN3_ONLY__
397#warning "mjn3 FIXME: a bunch of unimplemented function prototypes."
398# ifdef __USE_XOPEN_EXTENDED
399/* Set to one of the following values to indicate an error.
400     1  the DATEMSK environment variable is null or undefined,
401     2  the template file cannot be opened for reading,
402     3  failed to get file status information,
403     4  the template file is not a regular file,
404     5  an error is encountered while reading the template file,
405     6  memory allication failed (not enough memory available),
406     7  there is no line in the template that matches the input,
407     8  invalid input specification Example: February 31 or a time is
408        specified that can not be represented in a time_t (representing
409        the time in seconds since 00:00:00 UTC, January 1, 1970) */
410extern int getdate_err;
411
412/* Parse the given string as a date specification and return a value
413   representing the value.  The templates from the file identified by
414   the environment variable DATEMSK are used.  In case of an error
415   `getdate_err' is set.
416
417   This function is a possible cancellation points and therefore not
418   marked with __THROW.  */
419extern struct tm *getdate (__const char *__string);
420# endif
421
422# ifdef __USE_GNU
423/* Since `getdate' is not reentrant because of the use of `getdate_err'
424   and the static buffer to return the result in, we provide a thread-safe
425   variant.  The functionality is the same.  The result is returned in
426   the buffer pointed to by RESBUFP and in case of an error the return
427   value is != 0 with the same values as given above for `getdate_err'.
428
429   This function is not part of POSIX and therefore no official
430   cancellation point.  But due to similarity with an POSIX interface
431   or due to the implementation it is a cancellation point and
432   therefore not marked with __THROW.  */
433extern int getdate_r (__const char *__restrict __string,
434                      struct tm *__restrict __resbufp);
435# endif
436#endif /* __UCLIBC_MJN3_ONLY__ */
437
438__END_DECLS
439
440#endif /* <time.h> included.  */
441
442#endif /* <time.h> not already included.  */
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