#ifndef CBUS_H
#define CBUS_H

#include <stdlib.h>
#include "memory.h"

enum{
  BROADCAST=0,
  REQUEST
};

//use this struct to keep the processor queue for the bus in a 
//doubly linked list
struct PQ {
  int PE;       //the processor #
  long int address;
  int job;
  struct PQ* next;
  struct PQ* last;
};

class CBus 
{
public:
  CBus::CBus(void);
  CBus::CBus(int bsize);
  int CBus::getBusyCycles(void);
  long int CBus::getTotBusyCycles(void);
  void CBus::setBusyCycles(int);
  void CBus::addProcToQueue(int procnum, long int address, int job);
  int CBus::executeNextRequest(CMemory* cm);
  void CBus::decBusyCycles(void);
  struct PQ* CBus::getProcQueue(void);

private:
  int BusyCycles;
  long int TotBusyCycles;
  struct PQ* ProcQueue;
  int BlockSize;
};

#endif