Sweden-Number/dlls/ntdll/time.c

500 lines
16 KiB
C

/*
* Nt time functions.
*
* RtlTimeToTimeFields, RtlTimeFieldsToTime and defines are taken from ReactOS and
* adapted to wine with special permissions of the author. This code is
* Copyright 2002 Rex Jolliff (rex@lvcablemodem.com)
*
* Copyright 1999 Juergen Schmied
* Copyright 2007 Dmitry Timoshkov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <limits.h>
#include <time.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#define NONAMELESSUNION
#include "windef.h"
#include "winternl.h"
#include "ddk/wdm.h"
#include "wine/exception.h"
#include "wine/debug.h"
#include "ntdll_misc.h"
WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
#define TICKSPERSEC 10000000
#define TICKSPERMSEC 10000
#define SECSPERDAY 86400
#define SECSPERHOUR 3600
#define SECSPERMIN 60
#define MINSPERHOUR 60
#define HOURSPERDAY 24
#define EPOCHWEEKDAY 1 /* Jan 1, 1601 was Monday */
#define DAYSPERWEEK 7
#define MONSPERYEAR 12
#define DAYSPERQUADRICENTENNIUM (365 * 400 + 97)
#define DAYSPERNORMALQUADRENNIUM (365 * 4 + 1)
/* 1601 to 1970 is 369 years plus 89 leap days */
#define SECS_1601_TO_1970 ((369 * 365 + 89) * (ULONGLONG)SECSPERDAY)
#define TICKS_1601_TO_1970 (SECS_1601_TO_1970 * TICKSPERSEC)
/* 1601 to 1980 is 379 years plus 91 leap days */
#define SECS_1601_TO_1980 ((379 * 365 + 91) * (ULONGLONG)SECSPERDAY)
#define TICKS_1601_TO_1980 (SECS_1601_TO_1980 * TICKSPERSEC)
static const int MonthLengths[2][MONSPERYEAR] =
{
{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
};
static inline BOOL IsLeapYear(int Year)
{
return Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0);
}
/******************************************************************************
* RtlTimeToTimeFields [NTDLL.@]
*
* Convert a time into a TIME_FIELDS structure.
*
* PARAMS
* liTime [I] Time to convert.
* TimeFields [O] Destination for the converted time.
*
* RETURNS
* Nothing.
*/
VOID WINAPI RtlTimeToTimeFields(
const LARGE_INTEGER *liTime,
PTIME_FIELDS TimeFields)
{
int SecondsInDay;
long int cleaps, years, yearday, months;
long int Days;
LONGLONG Time;
/* Extract millisecond from time and convert time into seconds */
TimeFields->Milliseconds =
(CSHORT) (( liTime->QuadPart % TICKSPERSEC) / TICKSPERMSEC);
Time = liTime->QuadPart / TICKSPERSEC;
/* The native version of RtlTimeToTimeFields does not take leap seconds
* into account */
/* Split the time into days and seconds within the day */
Days = Time / SECSPERDAY;
SecondsInDay = Time % SECSPERDAY;
/* compute time of day */
TimeFields->Hour = (CSHORT) (SecondsInDay / SECSPERHOUR);
SecondsInDay = SecondsInDay % SECSPERHOUR;
TimeFields->Minute = (CSHORT) (SecondsInDay / SECSPERMIN);
TimeFields->Second = (CSHORT) (SecondsInDay % SECSPERMIN);
/* compute day of week */
TimeFields->Weekday = (CSHORT) ((EPOCHWEEKDAY + Days) % DAYSPERWEEK);
/* compute year, month and day of month. */
cleaps=( 3 * ((4 * Days + 1227) / DAYSPERQUADRICENTENNIUM) + 3 ) / 4;
Days += 28188 + cleaps;
years = (20 * Days - 2442) / (5 * DAYSPERNORMALQUADRENNIUM);
yearday = Days - (years * DAYSPERNORMALQUADRENNIUM)/4;
months = (64 * yearday) / 1959;
/* the result is based on a year starting on March.
* To convert take 12 from Januari and Februari and
* increase the year by one. */
if( months < 14 ) {
TimeFields->Month = months - 1;
TimeFields->Year = years + 1524;
} else {
TimeFields->Month = months - 13;
TimeFields->Year = years + 1525;
}
/* calculation of day of month is based on the wonderful
* sequence of INT( n * 30.6): it reproduces the
* 31-30-31-30-31-31 month lengths exactly for small n's */
TimeFields->Day = yearday - (1959 * months) / 64 ;
return;
}
/******************************************************************************
* RtlTimeFieldsToTime [NTDLL.@]
*
* Convert a TIME_FIELDS structure into a time.
*
* PARAMS
* ftTimeFields [I] TIME_FIELDS structure to convert.
* Time [O] Destination for the converted time.
*
* RETURNS
* Success: TRUE.
* Failure: FALSE.
*/
BOOLEAN WINAPI RtlTimeFieldsToTime(
PTIME_FIELDS tfTimeFields,
PLARGE_INTEGER Time)
{
int month, year, cleaps, day;
/* FIXME: normalize the TIME_FIELDS structure here */
/* No, native just returns 0 (error) if the fields are not */
if( tfTimeFields->Milliseconds< 0 || tfTimeFields->Milliseconds > 999 ||
tfTimeFields->Second < 0 || tfTimeFields->Second > 59 ||
tfTimeFields->Minute < 0 || tfTimeFields->Minute > 59 ||
tfTimeFields->Hour < 0 || tfTimeFields->Hour > 23 ||
tfTimeFields->Month < 1 || tfTimeFields->Month > 12 ||
tfTimeFields->Day < 1 ||
tfTimeFields->Day > MonthLengths
[ tfTimeFields->Month ==2 || IsLeapYear(tfTimeFields->Year)]
[ tfTimeFields->Month - 1] ||
tfTimeFields->Year < 1601 )
return FALSE;
/* now calculate a day count from the date
* First start counting years from March. This way the leap days
* are added at the end of the year, not somewhere in the middle.
* Formula's become so much less complicate that way.
* To convert: add 12 to the month numbers of Jan and Feb, and
* take 1 from the year */
if(tfTimeFields->Month < 3) {
month = tfTimeFields->Month + 13;
year = tfTimeFields->Year - 1;
} else {
month = tfTimeFields->Month + 1;
year = tfTimeFields->Year;
}
cleaps = (3 * (year / 100) + 3) / 4; /* nr of "century leap years"*/
day = (36525 * year) / 100 - cleaps + /* year * dayperyr, corrected */
(1959 * month) / 64 + /* months * daypermonth */
tfTimeFields->Day - /* day of the month */
584817 ; /* zero that on 1601-01-01 */
/* done */
Time->QuadPart = (((((LONGLONG) day * HOURSPERDAY +
tfTimeFields->Hour) * MINSPERHOUR +
tfTimeFields->Minute) * SECSPERMIN +
tfTimeFields->Second ) * 1000 +
tfTimeFields->Milliseconds ) * TICKSPERMSEC;
return TRUE;
}
/******************************************************************************
* RtlLocalTimeToSystemTime [NTDLL.@]
*
* Convert a local time into system time.
*
* PARAMS
* LocalTime [I] Local time to convert.
* SystemTime [O] Destination for the converted time.
*
* RETURNS
* Success: STATUS_SUCCESS.
* Failure: An NTSTATUS error code indicating the problem.
*/
NTSTATUS WINAPI RtlLocalTimeToSystemTime( const LARGE_INTEGER *LocalTime,
PLARGE_INTEGER SystemTime)
{
SYSTEM_TIMEOFDAY_INFORMATION info;
TRACE("(%p, %p)\n", LocalTime, SystemTime);
NtQuerySystemInformation( SystemTimeOfDayInformation, &info, sizeof(info), NULL );
SystemTime->QuadPart = LocalTime->QuadPart + info.TimeZoneBias.QuadPart;
return STATUS_SUCCESS;
}
/******************************************************************************
* RtlSystemTimeToLocalTime [NTDLL.@]
*
* Convert a system time into a local time.
*
* PARAMS
* SystemTime [I] System time to convert.
* LocalTime [O] Destination for the converted time.
*
* RETURNS
* Success: STATUS_SUCCESS.
* Failure: An NTSTATUS error code indicating the problem.
*/
NTSTATUS WINAPI RtlSystemTimeToLocalTime( const LARGE_INTEGER *SystemTime,
PLARGE_INTEGER LocalTime )
{
SYSTEM_TIMEOFDAY_INFORMATION info;
TRACE("(%p, %p)\n", SystemTime, LocalTime);
NtQuerySystemInformation( SystemTimeOfDayInformation, &info, sizeof(info), NULL );
LocalTime->QuadPart = SystemTime->QuadPart - info.TimeZoneBias.QuadPart;
return STATUS_SUCCESS;
}
/******************************************************************************
* RtlTimeToSecondsSince1970 [NTDLL.@]
*
* Convert a time into a count of seconds since 1970.
*
* PARAMS
* Time [I] Time to convert.
* Seconds [O] Destination for the converted time.
*
* RETURNS
* Success: TRUE.
* Failure: FALSE, if the resulting value will not fit in a DWORD.
*/
BOOLEAN WINAPI RtlTimeToSecondsSince1970( const LARGE_INTEGER *Time, LPDWORD Seconds )
{
ULONGLONG tmp = Time->QuadPart / TICKSPERSEC - SECS_1601_TO_1970;
if (tmp > 0xffffffff) return FALSE;
*Seconds = tmp;
return TRUE;
}
/******************************************************************************
* RtlTimeToSecondsSince1980 [NTDLL.@]
*
* Convert a time into a count of seconds since 1980.
*
* PARAMS
* Time [I] Time to convert.
* Seconds [O] Destination for the converted time.
*
* RETURNS
* Success: TRUE.
* Failure: FALSE, if the resulting value will not fit in a DWORD.
*/
BOOLEAN WINAPI RtlTimeToSecondsSince1980( const LARGE_INTEGER *Time, LPDWORD Seconds )
{
ULONGLONG tmp = Time->QuadPart / TICKSPERSEC - SECS_1601_TO_1980;
if (tmp > 0xffffffff) return FALSE;
*Seconds = tmp;
return TRUE;
}
/******************************************************************************
* RtlSecondsSince1970ToTime [NTDLL.@]
*
* Convert a count of seconds since 1970 to a time.
*
* PARAMS
* Seconds [I] Time to convert.
* Time [O] Destination for the converted time.
*
* RETURNS
* Nothing.
*/
void WINAPI RtlSecondsSince1970ToTime( DWORD Seconds, LARGE_INTEGER *Time )
{
Time->QuadPart = Seconds * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
}
/******************************************************************************
* RtlSecondsSince1980ToTime [NTDLL.@]
*
* Convert a count of seconds since 1980 to a time.
*
* PARAMS
* Seconds [I] Time to convert.
* Time [O] Destination for the converted time.
*
* RETURNS
* Nothing.
*/
void WINAPI RtlSecondsSince1980ToTime( DWORD Seconds, LARGE_INTEGER *Time )
{
Time->QuadPart = Seconds * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1980;
}
/******************************************************************************
* RtlTimeToElapsedTimeFields [NTDLL.@]
*
* Convert a time to a count of elapsed seconds.
*
* PARAMS
* Time [I] Time to convert.
* TimeFields [O] Destination for the converted time.
*
* RETURNS
* Nothing.
*/
void WINAPI RtlTimeToElapsedTimeFields( const LARGE_INTEGER *Time, PTIME_FIELDS TimeFields )
{
LONGLONG time;
INT rem;
time = Time->QuadPart / TICKSPERSEC;
TimeFields->Milliseconds = (Time->QuadPart % TICKSPERSEC) / TICKSPERMSEC;
/* time is now in seconds */
TimeFields->Year = 0;
TimeFields->Month = 0;
TimeFields->Day = time / SECSPERDAY;
/* rem is now the remaining seconds in the last day */
rem = time % SECSPERDAY;
TimeFields->Second = rem % 60;
rem /= 60;
TimeFields->Minute = rem % 60;
TimeFields->Hour = rem / 60;
}
/***********************************************************************
* RtlGetSystemTimePrecise [NTDLL.@]
*
* Get a more accurate current system time.
*
* RETURNS
* The current system time.
*/
LONGLONG WINAPI RtlGetSystemTimePrecise( void )
{
return unix_funcs->RtlGetSystemTimePrecise();
}
/******************************************************************************
* NtQueryPerformanceCounter [NTDLL.@]
*/
NTSTATUS WINAPI NtQueryPerformanceCounter( LARGE_INTEGER *counter, LARGE_INTEGER *frequency )
{
NTSTATUS status;
__TRY
{
status = unix_funcs->NtQueryPerformanceCounter( counter, frequency );
}
__EXCEPT_PAGE_FAULT
{
return STATUS_ACCESS_VIOLATION;
}
__ENDTRY
return status;
}
/******************************************************************************
* RtlQueryPerformanceCounter [NTDLL.@]
*/
BOOL WINAPI DECLSPEC_HOTPATCH RtlQueryPerformanceCounter( LARGE_INTEGER *counter )
{
unix_funcs->NtQueryPerformanceCounter( counter, NULL );
return TRUE;
}
/******************************************************************************
* RtlQueryPerformanceFrequency [NTDLL.@]
*/
BOOL WINAPI DECLSPEC_HOTPATCH RtlQueryPerformanceFrequency( LARGE_INTEGER *frequency )
{
frequency->QuadPart = TICKSPERSEC;
return TRUE;
}
/******************************************************************************
* NtGetTickCount (NTDLL.@)
* ZwGetTickCount (NTDLL.@)
*/
ULONG WINAPI DECLSPEC_HOTPATCH NtGetTickCount(void)
{
/* note: we ignore TickCountMultiplier */
return user_shared_data->u.TickCount.LowPart;
}
/***********************************************************************
* RtlQueryTimeZoneInformation [NTDLL.@]
*
* Get information about the current timezone.
*
* PARAMS
* tzinfo [O] Destination for the retrieved timezone info.
*
* RETURNS
* Success: STATUS_SUCCESS.
* Failure: An NTSTATUS error code indicating the problem.
*/
NTSTATUS WINAPI RtlQueryTimeZoneInformation(RTL_TIME_ZONE_INFORMATION *ret)
{
return NtQuerySystemInformation( SystemTimeZoneInformation, ret, sizeof(*ret), NULL );
}
/***********************************************************************
* RtlQueryDynamicTimeZoneInformation [NTDLL.@]
*
* Get information about the current timezone.
*
* PARAMS
* tzinfo [O] Destination for the retrieved timezone info.
*
* RETURNS
* Success: STATUS_SUCCESS.
* Failure: An NTSTATUS error code indicating the problem.
*/
NTSTATUS WINAPI RtlQueryDynamicTimeZoneInformation(RTL_DYNAMIC_TIME_ZONE_INFORMATION *ret)
{
return NtQuerySystemInformation( SystemDynamicTimeZoneInformation, ret, sizeof(*ret), NULL );
}
/***********************************************************************
* RtlSetTimeZoneInformation [NTDLL.@]
*
* Set the current time zone information.
*
* PARAMS
* tzinfo [I] Timezone information to set.
*
* RETURNS
* Success: STATUS_SUCCESS.
* Failure: An NTSTATUS error code indicating the problem.
*
*/
NTSTATUS WINAPI RtlSetTimeZoneInformation( const RTL_TIME_ZONE_INFORMATION *tzinfo )
{
return STATUS_PRIVILEGE_NOT_HELD;
}
/***********************************************************************
* RtlQueryUnbiasedInterruptTime [NTDLL.@]
*/
BOOL WINAPI RtlQueryUnbiasedInterruptTime(ULONGLONG *time)
{
ULONG high, low;
if (!time)
{
RtlSetLastWin32ErrorAndNtStatusFromNtStatus( STATUS_INVALID_PARAMETER );
return FALSE;
}
do
{
high = user_shared_data->InterruptTime.High1Time;
low = user_shared_data->InterruptTime.LowPart;
}
while (high != user_shared_data->InterruptTime.High2Time);
/* FIXME: should probably subtract InterruptTimeBias */
*time = (ULONGLONG)high << 32 | low;
return TRUE;
}