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#ifndef STORAGE_H
#define STORAGE_H
#include "definitions.h"
#include "response.h"
#include <algorithm>
#include <array>
#include <vector>
enum Accessor {
IDLE,
MEM,
FETCH,
L1CACHE,
SIDE,
};
class Storage
{
public:
/**
* Write `data` into `address`.
* @param the source making the request.
* @param the data (hexadecimal) to write.
* @param the address to write to.
* @return a status code reflecting the state of the request.
*/
virtual Response write(Accessor accessor, signed int data, int address) = 0;
/**
* Get the data at `address`.
* @param the source making the request.
* @param the address being accessed.
* @return a status code reflecting the state of the request, and the
* data being returned.
*/
virtual Response read(
Accessor accessor,
int address,
std::array<signed int, LINE_SIZE> &data) = 0;
/**
* Sidedoor view of `lines` of memory starting at `base`.
* @param The base line to start getting memory from.
* @param The amount of lines to fetch.
* @return A matrix of data values, where each row is a line and each column
* is a word.
*/
std::vector<std::array<signed int, LINE_SIZE>> view(int base, int lines);
/**
* Advances to the next job if the current job is completed.
*/
void resolve();
protected:
/**
* The data currently stored in this level of storage.
*/
std::vector<std::array<signed int, LINE_SIZE>> *data;
/**
* A pointer to the next lowest level of storage.
* Used in case of cache misses.
*/
Storage *lower;
/**
* The number of clock cycles this level of storage takes to complete
* requests.
*/
int delay;
/**
* The accessor currently being serviced.
*/
enum Accessor requester;
/**
* The number of cycles until the current request is completed.
*/
int wait_time;
/**
* A flag indicating whether this level of storage is currently waiting for
* a lower level.
*/
int is_waiting;
};
#endif /* STORAGE_H_INCLUDED */
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