pcsx2/common/emitter/cpudetect_internal.h

39 lines
1.3 KiB
C++

/* Cpudetection lib
* Copyright (C) 2002-2010 PCSX2 Dev Team
*
* PCSX2 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 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 PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "common/RedtapeWindows.h"
#include "common/emitter/tools.h"
// --------------------------------------------------------------------------------------
// Thread Affinity Lock
// --------------------------------------------------------------------------------------
// Assign a single CPU/core for this thread's affinity to ensure rdtsc() accuracy.
// (rdtsc for each CPU/core can differ, causing skewed results)
class SingleCoreAffinity
{
protected:
#ifdef _WIN32
HANDLE s_threadId;
DWORD_PTR s_oldmask;
#endif
public:
SingleCoreAffinity();
virtual ~SingleCoreAffinity();
};