220 lines
5.2 KiB
C
220 lines
5.2 KiB
C
/*
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* time.h
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*
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* Date and time functions and types.
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*
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* This file is part of the Mingw32 package.
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*
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* Contributors:
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* Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
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*
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* THIS SOFTWARE IS NOT COPYRIGHTED
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*
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* This source code is offered for use in the public domain. You may
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* use, modify or distribute it freely.
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*
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* This code is distributed in the hope that it will be useful but
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* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
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* DISCLAIMED. This includes but is not limited to warranties of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Revision$
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* $Author$
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* $Date$
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*
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*/
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#ifndef _TIME_H_
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#define _TIME_H_
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/* All the headers include this file. */
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#include <_mingw.h>
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#define __need_wchar_t
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#define __need_size_t
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#ifndef RC_INVOKED
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#include <stddef.h>
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#endif /* Not RC_INVOKED */
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/*
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* Need a definition of time_t.
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*/
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#include <sys/types.h>
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/*
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* Number of clock ticks per second. A clock tick is the unit by which
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* processor time is measured and is returned by 'clock'.
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*/
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#define CLOCKS_PER_SEC ((clock_t)1000)
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#define CLK_TCK CLOCKS_PER_SEC
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#ifndef RC_INVOKED
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/*
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* A type for storing the current time and date. This is the number of
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* seconds since midnight Jan 1, 1970.
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* NOTE: Normally this is defined by the above include of sys/types.h
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*/
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#ifndef _TIME_T_DEFINED
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typedef long time_t;
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#define _TIME_T_DEFINED
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#endif
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/*
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* A type for measuring processor time (in clock ticks).
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*/
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#ifndef _CLOCK_T_DEFINED
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typedef long clock_t;
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#define _CLOCK_T_DEFINED
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#endif
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/*
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* A structure for storing all kinds of useful information about the
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* current (or another) time.
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*/
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struct tm
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{
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int tm_sec; /* Seconds: 0-59 (K&R says 0-61?) */
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int tm_min; /* Minutes: 0-59 */
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int tm_hour; /* Hours since midnight: 0-23 */
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int tm_mday; /* Day of the month: 1-31 */
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int tm_mon; /* Months *since* january: 0-11 */
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int tm_year; /* Years since 1900 */
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int tm_wday; /* Days since Sunday (0-6) */
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int tm_yday; /* Days since Jan. 1: 0-365 */
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int tm_isdst; /* +1 Daylight Savings Time, 0 No DST,
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* -1 don't know */
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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clock_t clock (void);
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time_t time (time_t*);
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double difftime (time_t, time_t);
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time_t mktime (struct tm*);
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/*
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* These functions write to and return pointers to static buffers that may
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* be overwritten by other function calls. Yikes!
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*
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* NOTE: localtime, and perhaps the others of the four functions grouped
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* below may return NULL if their argument is not 'acceptable'. Also note
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* that calling asctime with a NULL pointer will produce an Invalid Page
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* Fault and crap out your program. Guess how I know. Hint: stat called on
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* a directory gives 'invalid' times in st_atime etc...
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*/
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char* asctime (const struct tm*);
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char* ctime (const time_t*);
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struct tm* gmtime (const time_t*);
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struct tm* localtime (const time_t*);
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size_t strftime (char*, size_t, const char*, const struct tm*);
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size_t wcsftime (wchar_t*, size_t, const wchar_t*, const struct tm*);
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#ifndef __STRICT_ANSI__
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extern void _tzset (void);
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#ifndef _NO_OLDNAMES
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extern void tzset (void);
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#endif
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size_t strftime(char*, size_t, const char*, const struct tm*);
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char* _strdate(char*);
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char* _strtime(char*);
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#endif /* Not __STRICT_ANSI__ */
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/*
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* _daylight: non zero if daylight savings time is used.
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* _timezone: difference in seconds between GMT and local time.
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* _tzname: standard/daylight savings time zone names (an array with two
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* elements).
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*/
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#ifdef __MSVCRT__
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/* These are for compatibility with pre-VC 5.0 suppied MSVCRT. */
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extern int* __p__daylight (void);
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extern long* __p__timezone (void);
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extern char** __p__tzname (void);
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__MINGW_IMPORT int _daylight;
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__MINGW_IMPORT long _timezone;
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__MINGW_IMPORT char *_tzname[2];
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#else /* not __MSVCRT (ie. crtdll) */
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#ifndef __DECLSPEC_SUPPORTED
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extern int* __imp__daylight_dll;
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extern long* __imp__timezone_dll;
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extern char** __imp__tzname;
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#define _daylight (*__imp__daylight_dll)
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#define _timezone (*__imp__timezone_dll)
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#define _tzname (__imp__tzname)
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#else /* __DECLSPEC_SUPPORTED */
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__MINGW_IMPORT int _daylight_dll;
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__MINGW_IMPORT long _timezone_dll;
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__MINGW_IMPORT char* _tzname[2];
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#define _daylight _daylight_dll
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#define _timezone _timezone_dll
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#endif /* __DECLSPEC_SUPPORTED */
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#endif /* not __MSVCRT__ */
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#ifndef _NO_OLDNAMES
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#ifdef __MSVCRT__
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/* These go in the oldnames import library for MSVCRT. */
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__MINGW_IMPORT int daylight;
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__MINGW_IMPORT long timezone;
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__MINGW_IMPORT char *tzname[2];
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#ifndef _WTIME_DEFINED
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/* wide function prototypes, also declared in wchar.h */
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wchar_t * _wasctime(const struct tm*);
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wchar_t * _wctime(const time_t*);
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wchar_t* _wstrdate(wchar_t*);
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wchar_t* _wstrtime(wchar_t*);
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#define _WTIME_DEFINED
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#endif /* _WTIME_DEFINED */
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#else /* not __MSVCRT__ */
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/* CRTDLL is royally messed up when it comes to these macros.
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TODO: import and alias these via oldnames import library instead
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of macros. */
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#define daylight _daylight
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/* NOTE: timezone not defined because it would conflict with sys/timeb.h.
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Also, tzname used to a be macro, but now it's in moldname. */
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__MINGW_IMPORT char *tzname[2];
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#endif /* not __MSVCRT__ */
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#endif /* Not _NO_OLDNAMES */
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#ifdef __cplusplus
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}
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#endif
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#endif /* Not RC_INVOKED */
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#endif /* Not _TIME_H_ */
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