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     static HMODULE hModule = nullptr;
  39     static GetSystemTimePreciseAsFileTime_PROC pGetSystemTimePreciseAsFileTime = nullptr;
  40
  41     OSL_ASSERT(pTimeVal != nullptr);
  42
  43     if ( !hModule )
  44     {
  45         hModule = GetModuleHandleW( L"Kernel32.dll" );
  46         if ( hModule )
  47             pGetSystemTimePreciseAsFileTime = reinterpret_cast<GetSystemTimePreciseAsFileTime_PROC>(
  48                 GetProcAddress(hModule, "GetSystemTimePreciseAsFileTime"));
  49     }
  50
  51     // use ~1 microsecond resolution if available
  52     if (pGetSystemTimePreciseAsFileTime)
  53         pGetSystemTimePreciseAsFileTime(&CurTime);
  54     else
  55     {
  56         GetSystemTime(&SystemTime);
  57         SystemTimeToFileTime(&SystemTime, &CurTime);
  58     }
  59
  60     SystemTime.wYear         = 1970;
  61     SystemTime.wMonth        = 1;
  62     SystemTime.wDayOfWeek    = 0;
  63     SystemTime.wDay          = 1;
  64     SystemTime.wHour         = 0;
  65     SystemTime.wMinute       = 0;
  66     SystemTime.wSecond       = 0;
  67     SystemTime.wMilliseconds = 0;
  68
  69     SystemTimeToFileTime(&SystemTime, &OffTime);
  70
  71     Value = *reinterpret_cast<__int64 *>(&CurTime) - *reinterpret_cast<__int64 *>(&OffTime);
  72
  73     pTimeVal->Seconds  = static_cast<unsigned long>(Value / 10000000L);
  74     pTimeVal->Nanosec  = static_cast<unsigned long>((Value % 10000000L) * 100);
  75
  76     return true;
  77 }
  78
  79 sal_Bool SAL_CALL osl_getDateTimeFromTimeValue( const TimeValue* pTimeVal, oslDateTime* pDateTime )
  80 {
  81     FILETIME    aFileTime;
  82     SYSTEMTIME  aSystemTime;
  83
  84     if ( TimeValueToFileTime(pTimeVal, &aFileTime) )
  85     {
  86         if ( FileTimeToSystemTime( &aFileTime, &aSystemTime ) )
  87         {
  88             pDateTime->NanoSeconds  =   pTimeVal->Nanosec;
  89
  90             pDateTime->Seconds      =   aSystemTime.wSecond;
  91             pDateTime->Minutes      =   aSystemTime.wMinute;
  92             pDateTime->Hours        =   aSystemTime.wHour;
  93             pDateTime->Day          =   aSystemTime.wDay;
  94             pDateTime->DayOfWeek    =   aSystemTime.wDayOfWeek;
  95             pDateTime->Month        =   aSystemTime.wMonth;
  96             pDateTime->Year         =   aSystemTime.wYear;
  97
  98             return true;
  99         }
 100     }
 101
 102     return false;
 103 }
 104
 105 sal_Bool SAL_CALL osl_getTimeValueFromDateTime( const oslDateTime* pDateTime, TimeValue* pTimeVal )
 106 {
 107     FILETIME    aFileTime;
 108     SYSTEMTIME  aSystemTime;
 109
 110     aSystemTime.wMilliseconds   =   0;
 111     aSystemTime.wSecond         =   pDateTime->Seconds;
 112     aSystemTime.wMinute         =   pDateTime->Minutes;
 113     aSystemTime.wHour           =   pDateTime->Hours;
 114     aSystemTime.wDay            =   pDateTime->Day;
 115     aSystemTime.wDayOfWeek      =   pDateTime->DayOfWeek;
 116     aSystemTime.wMonth          =   pDateTime->Month;
 117     aSystemTime.wYear           =   pDateTime->Year;
 118
 119     if ( SystemTimeToFileTime( &aSystemTime, &aFileTime ) )
 120     {
 121         if (FileTimeToTimeValue( &aFileTime, pTimeVal  ) )
 122         {
 123             pTimeVal->Nanosec = pDateTime->NanoSeconds;
 124             return true;
 125         }
 126     }
 127
 128     return false;
 129 }
 130
 131 sal_Bool SAL_CALL osl_getLocalTimeFromSystemTime( const TimeValue* pSystemTimeVal, TimeValue* pLocalTimeVal )
 132 {
 133     TIME_ZONE_INFORMATION aTimeZoneInformation;
 134     DWORD Success;
 135     sal_Int64   bias;
 136
 137     // get timezone information
 138     if ( ( Success=GetTimeZoneInformation( &aTimeZoneInformation ) ) != TIME_ZONE_ID_INVALID)
 139     {
 140         bias=aTimeZoneInformation.Bias;
 141
 142         // add bias for daylight saving time
 143         if ( Success== TIME_ZONE_ID_DAYLIGHT )
 144             bias+=aTimeZoneInformation.DaylightBias;
 145
 146         if ( static_cast<sal_Int64>(pSystemTimeVal->Seconds) > ( bias * 60 ) )
 147         {
 148             pLocalTimeVal->Seconds = static_cast<sal_uInt32>(pSystemTimeVal->Seconds - ( bias * 60) );
 149             pLocalTimeVal->Nanosec = pSystemTimeVal->Nanosec;
 150
 151             return true;
 152         }
 153     }
 154
 155     return false;
 156 }
 157
 158 sal_Bool SAL_CALL osl_getSystemTimeFromLocalTime( const TimeValue* pLocalTimeVal, TimeValue* pSystemTimeVal )
 159 {
 160     TIME_ZONE_INFORMATION aTimeZoneInformation;
 161     DWORD Success;
 162     sal_Int64   bias;
 163
 164     // get timezone information
 165     if ( ( Success=GetTimeZoneInformation( &aTimeZoneInformation ) ) != TIME_ZONE_ID_INVALID)
 166     {
 167         bias=aTimeZoneInformation.Bias;
 168
 169         // add bias for daylight saving time
 170         if ( Success== TIME_ZONE_ID_DAYLIGHT )
 171             bias+=aTimeZoneInformation.DaylightBias;
 172
 173         if ( static_cast<sal_Int64>(pLocalTimeVal->Seconds) + ( bias * 60 ) > 0 )
 174         {
 175             pSystemTimeVal->Seconds = static_cast<sal_uInt32>( pLocalTimeVal->Seconds + ( bias * 60) );
 176             pSystemTimeVal->Nanosec = pLocalTimeVal->Nanosec;
 177
 178             return true;
 179         }
 180     }
 181
 182     return false;
 183 }
 184
 185 static struct _timeb startTime;
 186 void sal_initGlobalTimer()
 187 {
 188     _ftime( &startTime );
 189 }
 190
 191 sal_uInt32 SAL_CALL osl_getGlobalTimer(void)
 192 {
 193   struct _timeb currentTime;
 194   sal_uInt32 nSeconds;
 195
 196   _ftime( &currentTime );
 197
 198   nSeconds = static_cast<sal_uInt32>( currentTime.time - startTime.time );
 199
 200   return ( nSeconds * 1000 ) + static_cast<long>( currentTime.millitm - startTime.millitm );
 201 }
 202
 203 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */