corecrt_internal_time.h File Reference

#include <corecrt.h>
#include <corecrt_internal.h>
#include <corecrt_internal_traits.h>
#include <io.h>
#include <sys/utime.h>
#include <time.h>

Include dependency graph for corecrt_internal_time.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
struct	__crt_time_time_t_traits< __time32_t >
struct	__crt_time_time_t_traits< __time64_t >
struct	__crt_time_traits< TimeType, Character >
union	__crt_filetime_union

Macros
#define	_EPOCH_BIAS   116444736000000000ll
#define	_DAY_SEC   (24 * 60 * 60)
#define	_YEAR_SEC   (365 * _DAY_SEC)
#define	_FOUR_YEAR_SEC   (1461 * _DAY_SEC)
#define	_BASE_YEAR   70
#define	_BASE_DOW   4
#define	_MAX_LOCAL_TIME   (14 * 60 * 60)
#define	_MIN_LOCAL_TIME   (-12 * 60 * 60)
#define	_TZ_STRINGS_SIZE   64

Functions
int __cdecl	_isindst (_In_ tm *_Time)
void __cdecl	__tzset ()
tm *__cdecl	__getgmtimebuf ()
__time32_t __cdecl	__loctotime32_t (int, int, int, int, int, int, int)
__time64_t __cdecl	__loctotime64_t (int, int, int, int, int, int, int)
template<typename TimeType >
bool __cdecl	__crt_time_is_leap_year (TimeType const yr) throw ()
template<typename TimeType >
TimeType __cdecl	__crt_time_elapsed_leap_years (TimeType const yr) throw ()
bool __cdecl	__crt_time_is_day_valid (int const yr, int const mo, int const dy) throw ()
int	__crt_get_2digit_year (int const year) throw ()
int	__crt_get_century (int const year) throw ()
	_Success_ (return > 0) size_t __cdecl _Wcsftime_l(_Out_writes_z_(max_size) wchar_t *string
_Check_return_ _Deref_ret_z_ wchar_t **__cdecl	__wide_tzname ()

Variables
char const	__dnames []
char const	__mnames []
int const	_days []
int const	_lpdays []
_In_ size_t	max_size
_In_ size_t _In_z_ wchar_t const *	format
_In_ size_t _In_z_ wchar_t const _In_ tm const *	timeptr
_In_ size_t _In_z_ wchar_t const _In_ tm const _In_opt_ void *	lc_time_arg
_In_ size_t _In_z_ wchar_t const _In_ tm const _In_opt_ void _In_opt_ _locale_t	locale

Macro Definition Documentation

_BASE_DOW

#define _BASE_DOW   4

Definition at line 34 of file corecrt_internal_time.h.

_BASE_YEAR

#define _BASE_YEAR   70

Definition at line 33 of file corecrt_internal_time.h.

_DAY_SEC

#define _DAY_SEC   (24 * 60 * 60)

Definition at line 30 of file corecrt_internal_time.h.

_EPOCH_BIAS

#define _EPOCH_BIAS   116444736000000000ll

Definition at line 28 of file corecrt_internal_time.h.

_FOUR_YEAR_SEC

#define _FOUR_YEAR_SEC   (1461 * _DAY_SEC)

Definition at line 32 of file corecrt_internal_time.h.

_MAX_LOCAL_TIME

#define _MAX_LOCAL_TIME   (14 * 60 * 60)

Definition at line 37 of file corecrt_internal_time.h.

_MIN_LOCAL_TIME

#define _MIN_LOCAL_TIME   (-12 * 60 * 60)

Definition at line 40 of file corecrt_internal_time.h.

_TZ_STRINGS_SIZE

#define _TZ_STRINGS_SIZE   64

Definition at line 42 of file corecrt_internal_time.h.

_YEAR_SEC

#define _YEAR_SEC   (365 * _DAY_SEC)

Definition at line 31 of file corecrt_internal_time.h.

Function Documentation

__crt_get_2digit_year()

int __crt_get_2digit_year ( int const  year ) throw ( )

inline

Definition at line 194 of file corecrt_internal_time.h.

{
    return (1900 + year) % 100;
}

Referenced by expand_time(), and throw().

__crt_get_century()

int __crt_get_century ( int const  year ) throw ( )

inline

Definition at line 199 of file corecrt_internal_time.h.

{
    return (1900 + year) / 100;
}

Referenced by expand_time(), and throw().

__crt_time_elapsed_leap_years()

template<typename TimeType >

TimeType __cdecl __crt_time_elapsed_leap_years	(	TimeType const	yr	)
throw	(
	)

Definition at line 168 of file corecrt_internal_time.h.

{
    static TimeType const leap_years_between_1900_and_1970 = 17;
 
    TimeType const elapsed_leap_years = ((yr - 1) / 4) - ((yr - 1) / 100) + ((yr + 299) / 400);
 
    return elapsed_leap_years - leap_years_between_1900_and_1970;
}

Referenced by common_loctotime_t(), common_mktime(), compute_year(), and cvtdate().

__crt_time_is_day_valid()

bool __cdecl __crt_time_is_day_valid ( int const  yr, int const  mo, int const  dy  ) throw ( )

inline

Definition at line 178 of file corecrt_internal_time.h.

{
    if (dy <= 0)
        return false;
 
    int const days_in_month = _days[mo + 1] - _days[mo];
    if (dy <= days_in_month)
        return true;
 
    // Special case for February:
    if (__crt_time_is_leap_year(yr) && mo == 1 && dy <= 29)
        return true;
 
    return false;
}

Referenced by common_loctotime_t(), and throw().

__crt_time_is_leap_year()

template<typename TimeType >

bool __cdecl __crt_time_is_leap_year	(	TimeType const	yr	)
throw	(
	)

Definition at line 153 of file corecrt_internal_time.h.

{
    if (yr % 4 == 0 && yr % 100 != 0)
        return true;
 
    if ((yr + 1900) % 400 == 0)
        return true;
 
    return false;
}

Referenced by __crt_time_is_day_valid(), common_loctotime_t(), common_mktime(), compute_iso_week(), compute_iso_week_internal(), compute_year(), and cvtdate().

__getgmtimebuf()

tm *__cdecl __getgmtimebuf

(

)

Definition at line 154 of file gmtime.cpp.

{
    __acrt_ptd* const ptd = __acrt_getptd_noexit();
    if (ptd == nullptr)
    {
        errno = ENOMEM;
        return nullptr;
    }
 
    if (ptd->_gmtime_buffer != nullptr)
    {
        return ptd->_gmtime_buffer;
    }
 
    ptd->_gmtime_buffer = _malloc_crt_t(tm, 1).detach();
    if (ptd->_gmtime_buffer == nullptr)
    {
        errno = ENOMEM;
        return nullptr;
    }
 
    return ptd->_gmtime_buffer;
}

Referenced by _Success_().

__loctotime32_t()

__time32_t __cdecl __loctotime32_t	(	int	yr,
		int	mo,
		int	dy,
		int	hr,
		int	mn,
		int	sc,
		int	dstflag
	)

Definition at line 93 of file loctotime.cpp.

{
    return common_loctotime_t<__time32_t>(yr, mo, dy, hr, mn, sc, dstflag);
}

Referenced by convert_system_time_to_time_t().

__loctotime64_t()

__time64_t __cdecl __loctotime64_t	(	int	yr,
		int	mo,
		int	dy,
		int	hr,
		int	mn,
		int	sc,
		int	dstflag
	)

Definition at line 106 of file loctotime.cpp.

{
    return common_loctotime_t<__time64_t>(yr, mo, dy, hr, mn, sc, dstflag);
}

Referenced by convert_system_time_to_time_t().

__tzset()

void __cdecl __tzset

(

)

Definition at line 392 of file tzset.cpp.

{
    auto const first_time = tzset_init_state.dangerous_get_state_array() + __crt_state_management::get_current_state_index();
 
    if (__crt_interlocked_read(first_time) != 0)
    {
        return;
    }
 
    __acrt_lock(__acrt_time_lock);
    __try
    {
        if (__crt_interlocked_read(first_time) != 0)
        {
            __leave;
        }
 
        tzset_nolock();
 
        _InterlockedIncrement(first_time);
    }
    __finally
    {
        __acrt_unlock(__acrt_time_lock);
    }
    __endtry
}

Referenced by common_ftime_s(), common_localtime_s(), common_loctotime_t(), common_mktime(), and expand_time().

__wide_tzname()

_Check_return_ _Deref_ret_z_ wchar_t **__cdecl __wide_tzname

(

)

Definition at line 185 of file timeset.cpp.

{
    return w_tzname.value();
}

Referenced by expand_time(), tzset_from_environment_nolock(), and tzset_from_system_nolock().

_isindst()

int __cdecl _isindst

(

_In_ tm *

_Time

)

Referenced by common_localtime_s(), and common_loctotime_t().

_Success_()

_Success_	(	return	,
		0
	)

Variable Documentation

__dnames

char const __dnames[]

extern

Definition at line 151 of file timeset.cpp.

Referenced by throw().

__mnames

char const __mnames[]

extern

Definition at line 157 of file timeset.cpp.

Referenced by throw().

_days

int const _days[]

extern

Definition at line 14 of file days.cpp.

Referenced by __crt_time_is_day_valid(), common_gmtime_s(), common_loctotime_t(), common_mktime(), and cvtdate().

_lpdays

int const _lpdays[]

extern

Definition at line 21 of file days.cpp.

Referenced by common_gmtime_s(), and cvtdate().

format

_In_ size_t _In_z_ wchar_t const* format

Definition at line 207 of file corecrt_internal_time.h.

lc_time_arg

_In_ size_t _In_z_ wchar_t const _In_ tm const _In_opt_ void* lc_time_arg

Definition at line 209 of file corecrt_internal_time.h.

Referenced by _Wcsftime(), and _Wcsftime_l().

locale

_In_ size_t _In_z_ wchar_t const _In_ tm const _In_opt_ void _In_opt_ _locale_t locale

Definition at line 210 of file corecrt_internal_time.h.

max_size

_In_ size_t max_size

Definition at line 206 of file corecrt_internal_time.h.

timeptr

_In_ size_t _In_z_ wchar_t const _In_ tm const* timeptr

Definition at line 208 of file corecrt_internal_time.h.

Referenced by _Wcsftime(), _wcsftime_l(), _Wcsftime_l(), expand_time(), and wcsftime().