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 * Copyright (c) 2015-2023 Google, Inc.  All rights reserved.
 * **********************************************************/

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/* cache_lru: represents a single hardware cache with LRU algo.
 */

#ifndef _CACHE_LRU_H_
#define _CACHE_LRU_H_ 1

#include <string>
#include <vector>

#include "cache.h"
#include "prefetcher.h"
#include "snoop_filter.h"

namespace dynamorio {
namespace drmemtrace {

class cache_lru_t : public cache_t {
public:
    explicit cache_lru_t(const std::string &name = "cache_lru")
        : cache_t(name)
    {
    }
    bool
    init(int associativity, int line_size, int total_size, caching_device_t *parent,
         caching_device_stats_t *stats, prefetcher_t *prefetcher = nullptr,
         bool inclusive = false, bool coherent_cache = false, int id_ = -1,
         snoop_filter_t *snoop_filter_ = nullptr,
         const std::vector<caching_device_t *> &children = {}) override;
    std::string
    get_replace_policy() const override
    {
        return "LRU";
    }

protected:
    void
    access_update(int block_idx, int way) override;
    int
    replace_which_way(int block_idx) override;
    int
    get_next_way_to_replace(const int block_idx) const override;
};

} // namespace drmemtrace
} // namespace dynamorio

#endif /* _CACHE_LRU_H_ */