#ifndef __PDH_H__

#define __PDH_H__

#include <windows.h>

#include <stdio.h>

#pragma hdrstop

#include "pdh.h"

enum {kHistory = 1024};

// ================================================================================================

// Single-query PDH wrapper with history

// ================================================================================================

class PDHQuery {

friend class PDH;

HQUERY query;

HCOUNTER counter;

TCHAR counterpath[256];

long history[kHistory];

long historysize;

public:

PDHQuery() : query(NULL), counter(NULL), historysize(0) {

PdhOpenQuery(NULL, 0, &query);

}

~PDHQuery() {

PdhCloseQuery(query);

}

void SetPath(char *path);

int GetData();

};

// ================================================================================================

// Class to manage multiple queries and add more

// ================================================================================================

class PDH {

struct PDHList {

PDHList() { next = NULL; }

PDHQuery q;

PDHList *next;

};

int counters;

PDHList *head;

public:

PDH() : head(NULL), counters(0) {}

long Sum(int timeago);

void AddCounter(char *path);

void ChooseUI();

void AddObjects(char *objsearch, char *countersearch = NULL, char *ifsearch = NULL);

void Tick();

};

#endif // __PDH_H__