rainmeter-studio/Library/MeasureCPU.h

/*
  Copyright (C) 2001 Kimmo Pekkola

  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.
*/

#ifndef __MEASURECPU_H__
#define __MEASURECPU_H__

#include "Measure.h"

typedef LONG (WINAPI *FPNTQSI)(UINT, PVOID, ULONG, PULONG);

class MeasureCPU : public Measure
{
public:
	MeasureCPU(MeterWindow* meterWindow, const WCHAR* name);
	virtual ~MeasureCPU();

	MeasureCPU(const MeasureCPU& other) = delete;
	MeasureCPU& operator=(MeasureCPU other) = delete;

	virtual UINT GetTypeID() { return TypeID<MeasureCPU>(); }

	static void InitializeStatic();
	static void FinalizeStatic();

protected:
	virtual void ReadOptions(ConfigParser& parser, const WCHAR* section);
	virtual void UpdateValue();

private:
	void CalcUsage(double idleTime, double systemTime);

	int m_Processor;

	double m_OldTime[2];

	static FPNTQSI c_NtQuerySystemInformation;

	static int c_NumOfProcessors;
	static ULONG c_BufferSize;
};

#endif