sal/osl/w32/time.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/config.h>
  21 #include "system.h"
  22
  23 #include "filetime.hxx"
  24 #include "time.hxx"
  25
  26 #include <osl/diagnose.h>
  27 #include <osl/time.h>
  28 #include <sys/timeb.h>
  29
  30 sal_Bool SAL_CALL osl_getSystemTime(TimeValue* pTimeVal)
  31 {
  32     SYSTEMTIME SystemTime;
  33     FILETIME   CurTime, OffTime;
  34     __int64    Value;
  35
  36     typedef VOID (WINAPI *GetSystemTimePreciseAsFileTime_PROC)(LPFILETIME);
  37
  38     OSL_ASSERT(pTimeVal != nullptr);
  39
  40     static GetSystemTimePreciseAsFileTime_PROC pGetSystemTimePreciseAsFileTime = [&]()
  41     {
  42         HMODULE hModule = GetModuleHandleW( L"Kernel32.dll" );
  43         return reinterpret_cast<GetSystemTimePreciseAsFileTime_PROC>(
  44                 GetProcAddress(hModule, "GetSystemTimePreciseAsFileTime"));
  45     }();
  46
  47     // use ~1 microsecond resolution if available
  48     if (pGetSystemTimePreciseAsFileTime)
  49         pGetSystemTimePreciseAsFileTime(&CurTime);
  50     else
  51     {
  52         GetSystemTime(&SystemTime);
  53         SystemTimeToFileTime(&SystemTime, &CurTime);
  54     }
  55
  56     SystemTime.wYear         = 1970;
  57     SystemTime.wMonth        = 1;
  58     SystemTime.wDayOfWeek    = 0;
  59     SystemTime.wDay          = 1;
  60     SystemTime.wHour         = 0;
  61     SystemTime.wMinute       = 0;
  62     SystemTime.wSecond       = 0;
  63     SystemTime.wMilliseconds = 0;
  64
  65     SystemTimeToFileTime(&SystemTime, &OffTime);
  66
  67     Value = *reinterpret_cast<__int64 *>(&CurTime) - *reinterpret_cast<__int64 *>(&OffTime);
  68
  69     pTimeVal->Seconds  = static_cast<unsigned long>(Value / 10000000L);
  70     pTimeVal->Nanosec  = static_cast<unsigned long>((Value % 10000000L) * 100);
  71
  72     return true;
  73 }
  74
  75 sal_Bool SAL_CALL osl_getDateTimeFromTimeValue( const TimeValue* pTimeVal, oslDateTime* pDateTime )
  76 {
  77     FILETIME    aFileTime;
  78     SYSTEMTIME  aSystemTime;
  79
  80     if ( TimeValueToFileTime(pTimeVal, &aFileTime) )
  81     {
  82         if ( FileTimeToSystemTime( &aFileTime, &aSystemTime ) )
  83         {
  84             pDateTime->NanoSeconds  =   pTimeVal->Nanosec;
  85
  86             pDateTime->Seconds      =   aSystemTime.wSecond;
  87             pDateTime->Minutes      =   aSystemTime.wMinute;
  88             pDateTime->Hours        =   aSystemTime.wHour;
  89             pDateTime->Day          =   aSystemTime.wDay;
  90             pDateTime->DayOfWeek    =   aSystemTime.wDayOfWeek;
  91             pDateTime->Month        =   aSystemTime.wMonth;
  92             pDateTime->Year         =   aSystemTime.wYear;
  93
  94             return true;
  95         }
  96     }
  97
  98     return false;
  99 }
 100
 101 sal_Bool SAL_CALL osl_getTimeValueFromDateTime( const oslDateTime* pDateTime, TimeValue* pTimeVal )
 102 {
 103     FILETIME    aFileTime;
 104     SYSTEMTIME  aSystemTime;
 105
 106     aSystemTime.wMilliseconds   =   0;
 107     aSystemTime.wSecond         =   pDateTime->Seconds;
 108     aSystemTime.wMinute         =   pDateTime->Minutes;
 109     aSystemTime.wHour           =   pDateTime->Hours;
 110     aSystemTime.wDay            =   pDateTime->Day;
 111     aSystemTime.wDayOfWeek      =   pDateTime->DayOfWeek;
 112     aSystemTime.wMonth          =   pDateTime->Month;
 113     aSystemTime.wYear           =   pDateTime->Year;
 114
 115     if ( SystemTimeToFileTime( &aSystemTime, &aFileTime ) )
 116     {
 117         if (FileTimeToTimeValue( &aFileTime, pTimeVal  ) )
 118         {
 119             pTimeVal->Nanosec = pDateTime->NanoSeconds;
 120             return true;
 121         }
 122     }
 123
 124     return false;
 125 }
 126
 127 sal_Bool SAL_CALL osl_getLocalTimeFromSystemTime( const TimeValue* pSystemTimeVal, TimeValue* pLocalTimeVal )
 128 {
 129     TIME_ZONE_INFORMATION aTimeZoneInformation;
 130     DWORD Success;
 131     sal_Int64   bias;
 132
 133     // get timezone information
 134     if ( ( Success=GetTimeZoneInformation( &aTimeZoneInformation ) ) != TIME_ZONE_ID_INVALID)
 135     {
 136         bias=aTimeZoneInformation.Bias;
 137
 138         // add bias for daylight saving time
 139         if ( Success== TIME_ZONE_ID_DAYLIGHT )
 140             bias+=aTimeZoneInformation.DaylightBias;
 141
 142         if ( static_cast<sal_Int64>(pSystemTimeVal->Seconds) > ( bias * 60 ) )
 143         {
 144             pLocalTimeVal->Seconds = static_cast<sal_uInt32>(pSystemTimeVal->Seconds - ( bias * 60) );
 145             pLocalTimeVal->Nanosec = pSystemTimeVal->Nanosec;
 146
 147             return true;
 148         }
 149     }
 150
 151     return false;
 152 }
 153
 154 sal_Bool SAL_CALL osl_getSystemTimeFromLocalTime( const TimeValue* pLocalTimeVal, TimeValue* pSystemTimeVal )
 155 {
 156     TIME_ZONE_INFORMATION aTimeZoneInformation;
 157     DWORD Success;
 158     sal_Int64   bias;
 159
 160     // get timezone information
 161     if ( ( Success=GetTimeZoneInformation( &aTimeZoneInformation ) ) != TIME_ZONE_ID_INVALID)
 162     {
 163         bias=aTimeZoneInformation.Bias;
 164
 165         // add bias for daylight saving time
 166         if ( Success== TIME_ZONE_ID_DAYLIGHT )
 167             bias+=aTimeZoneInformation.DaylightBias;
 168
 169         if ( static_cast<sal_Int64>(pLocalTimeVal->Seconds) + ( bias * 60 ) > 0 )
 170         {
 171             pSystemTimeVal->Seconds = static_cast<sal_uInt32>( pLocalTimeVal->Seconds + ( bias * 60) );
 172             pSystemTimeVal->Nanosec = pLocalTimeVal->Nanosec;
 173
 174             return true;
 175         }
 176     }
 177
 178     return false;
 179 }
 180
 181 static struct _timeb startTime;
 182 void sal_initGlobalTimer()
 183 {
 184     _ftime( &startTime );
 185 }
 186
 187 sal_uInt32 SAL_CALL osl_getGlobalTimer(void)
 188 {
 189   struct _timeb currentTime;
 190   sal_uInt32 nSeconds;
 191
 192   _ftime( &currentTime );
 193
 194   nSeconds = static_cast<sal_uInt32>( currentTime.time - startTime.time );
 195
 196   return ( nSeconds * 1000 ) + static_cast<long>( currentTime.millitm - startTime.millitm );
 197 }
 198
 199 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */