// PageTable class
//   this class models a page table for implementing virtual memory
///////////////////////////////////////////////////////////////////////////////////////

#ifndef _PAGE_TABLE_
#define _PAGE_TABLE_

#include <vector>
using namespace std;

class PageTable
{
  public:
    PageTable(int log, int phys);
    bool isValid(int pageNum);
    void accessPage(int pageNum);
    void storePage(int pageNum);
  private:
    int numStored;

    class TableEntry
    {
      public:
        int frameNumber;
        int timeStamp;
        bool valid;
        TableEntry() { valid = false; }
    };
    vector<TableEntry> pageMap;
    vector<int> freeFrames;

    int selectSwapPage();
};

#endif