IOScheduler/Scheduler.h at master · bzmull/IOScheduler · GitHub

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//
// Created by ben on 8/4/19.
//

#ifndef IOSCHEDULER_SCHEDULER_H
#define IOSCHEDULER_SCHEDULER_H

#include "IO_Request.h"

#include <list>

using namespace std;

class Scheduler {
public:
    list <IO_Request *> IO_ready_queue;
    list <IO_Request *> IO_add_queue;
    int which_queue;
    IO_Request *active_request;
    int CURRENT_TRACK;
    int head_direction;
    bool change_direction;
    bool q_option;

    virtual IO_Request* get_next_request(list <IO_Request *> &IO_ready_queue) = 0;
    Scheduler();
};


class FIFO : public Scheduler {
public:

    IO_Request* get_next_request(list <IO_Request *> &IO_ready_queue);
};


class SSTF : public Scheduler{
public:
    IO_Request* get_next_request(list <IO_Request *> &IO_ready_queue);
};


class LOOK : public Scheduler{
public:
    IO_Request* get_next_request(list <IO_Request *> &IO_ready_queue) ;
};


class CLOOK : public Scheduler{
public:
    IO_Request* get_next_request(list <IO_Request *> &IO_ready_queue) ;
};


class FLOOK : public Scheduler{
public:
    IO_Request* get_next_request(list <IO_Request *> &IO_ready_queue) ;
};


#endif //IOSCHEDULER_SCHEDULER_H