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