include/time.h

/* 
 * time.h
 * This file has no copyright assigned and is placed in the Public Domain.
 * This file is a part of the mingw-runtime package.
 * No warranty is given; refer to the file DISCLAIMER within the package.
 *
 * Date and time functions and types.
 *
 */

#ifndef TIME_H_
#define TIME_H_

/* All the headers include this file. */
#include <_mingw.h>

#define __need_wchar_t
#define __need_size_t
#define __need_NULL
#ifndef RC_INVOKED
#include <stddef.h>
#endif	/* Not RC_INVOKED */

#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: This is also defined in non-ISO sys/types.h.
 */
#ifndef _TIME_T_DEFINED
typedef long int time_t;
#define _TIME_T_DEFINED
#endif

#ifndef __STRICT_ANSI__
/* A 64-bit time_t to get to Y3K */
#ifndef _TIME64_T_DEFINED
typedef __int64 __time64_t;
#define _TIME64_T_DEFINED
#endif
#endif
/*
 * A type for measuring processor time (in clock ticks).
 */
#ifndef _CLOCK_T_DEFINED
typedef long int clock_t;
#define _CLOCK_T_DEFINED
#endif

#ifndef _TM_DEFINED
/*
 * 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 */
};
#define _TM_DEFINED
#endif

struct timespec {
	time_t tv_sec;			// Seconds.
	long int tv_nsec;		// Nanoseconds.
};

#ifdef	__cplusplus
extern "C" {
#endif

#ifndef __COREDLL__
_CRTIMP clock_t __cdecl __MINGW_NOTHROW clock(void);
#endif
_CRTIMP time_t __cdecl __MINGW_NOTHROW time(time_t*);
_CRTIMP double __cdecl __MINGW_NOTHROW difftime(time_t, time_t);
_CRTIMP time_t __cdecl __MINGW_NOTHROW 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...
 */
_CRTIMP char *__cdecl __MINGW_NOTHROW		asctime(const struct tm*);
_CRTIMP char *__cdecl __MINGW_NOTHROW		ctime(const time_t*);
_CRTIMP struct tm *__cdecl __MINGW_NOTHROW	gmtime(const time_t*);
_CRTIMP struct tm *__cdecl __MINGW_NOTHROW	localtime(const time_t*);

_CRTIMP size_t __cdecl __MINGW_NOTHROW		strftime(char*, size_t, const char*, const struct tm*);

#ifndef __STRICT_ANSI__

extern _CRTIMP void __cdecl __MINGW_NOTHROW	_tzset(void);
extern _CRTIMP void __cdecl __MINGW_NOTHROW	tzset(void);

#ifndef __COREDLL__
_CRTIMP char *__cdecl __MINGW_NOTHROW _strdate(char*);
_CRTIMP char *__cdecl __MINGW_NOTHROW _strtime(char*);
#endif

/* These require newer versions of msvcrt.dll (6.10 or higher). */ 
#if __MSVCRT_VERSION__ >= 0x0601
_CRTIMP __time64_t __cdecl __MINGW_NOTHROW  _time64( __time64_t*);
_CRTIMP __time64_t __cdecl __MINGW_NOTHROW  _mktime64(struct tm*);
_CRTIMP char *__cdecl __MINGW_NOTHROW _ctime64(const __time64_t*);
_CRTIMP struct tm *__cdecl __MINGW_NOTHROW _gmtime64(const __time64_t*);
_CRTIMP struct tm *__cdecl __MINGW_NOTHROW _localtime64(const __time64_t*);
#endif /* __MSVCRT_VERSION__ >= 0x0601 */

/*
 * _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 _CRTIMP int *__cdecl __MINGW_NOTHROW	__p__daylight (void);
extern _CRTIMP long *__cdecl __MINGW_NOTHROW	__p__timezone (void);
extern _CRTIMP char **__cdecl __MINGW_NOTHROW	__p__tzname (void);

__MINGW_IMPORT int _daylight;
__MINGW_IMPORT long _timezone;
__MINGW_IMPORT char *_tzname[2];

#elif defined(__CRTDLL__)

#ifndef __DECLSPEC_SUPPORTED

extern int daylight_dll;
extern long timezone_dll;
extern char *tzname[2];

#else

__MINGW_IMPORT int daylight;
__MINGW_IMPORT long timezone_dll;
__MINGW_IMPORT char *tzname[2];

#endif	/* __DECLSPEC_SUPPORTED */

#endif

#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];

#endif /* not __MSVCRT__ */

#endif	/* Not _NO_OLDNAMES */
#endif	/* Not __STRICT_ANSI__ */

#define CLOCK_REALTIME 0
#define CLOCK_MONOTONIC 1

int clock_gettime(clockid_t, struct timespec *);
int clock_settime(clockid_t, const struct timespec *);

#ifndef _WTIME_DEFINED
/* wide function prototypes, also declared in wchar.h */
#ifndef __STRICT_ANSI__
#ifdef __MSVCRT__
_CRTIMP wchar_t *__cdecl __MINGW_NOTHROW	_wasctime(const struct tm*);
_CRTIMP wchar_t *__cdecl __MINGW_NOTHROW	_wctime(const time_t*);
_CRTIMP wchar_t *__cdecl __MINGW_NOTHROW	_wstrdate(wchar_t*);
_CRTIMP wchar_t *__cdecl __MINGW_NOTHROW	_wstrtime(wchar_t*);
#if __MSVCRT_VERSION__ >= 0x0601
_CRTIMP wchar_t *__cdecl __MINGW_NOTHROW	_wctime64(const __time64_t*);
#endif
#endif /*  __MSVCRT__ */
#endif /* __STRICT_ANSI__ */
_CRTIMP size_t __cdecl __MINGW_NOTHROW		wcsftime(wchar_t*, size_t, const wchar_t*, const struct tm*);
#define _WTIME_DEFINED
#endif /* _WTIME_DEFINED */ 

#ifdef	__cplusplus
}
#endif

#endif	/* Not RC_INVOKED */

#endif