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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
/*
* This code is based on Broken Sword 2.5 engine
*
* Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
*
* Licensed under GNU GPL v2
*
*/
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include "sword25/kernel/timer.h"
#define BS_LOG_PREFIX "BS_TIMER"
uint64_t BS_Timer::GetMicroTicks()
{
HANDLE ThreadID = ::GetCurrentThread();
DWORD_PTR OldAffinityMask = ::SetThreadAffinityMask(ThreadID, 1);
uint64_t Frequency;
::QueryPerformanceFrequency(reinterpret_cast<LARGE_INTEGER*>(&Frequency));
uint64_t Tick;
::QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER*>(&Tick));
::SetThreadAffinityMask(ThreadID, OldAffinityMask);
return Tick * 1000000 / Frequency;
}
unsigned int BS_Timer::GetMilliTicks()
{
return (unsigned int)(GetMicroTicks() / 1000);
}
bool BS_Timer::IsTimerAvaliable()
{
LARGE_INTEGER Dummy;
return ::QueryPerformanceFrequency(&Dummy) ? true : false;
}
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