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