cache.h

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

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/* cache: represents a single hardware cache.
 */

#ifndef _CACHE_H_
#define _CACHE_H_ 1

#include <string>
#include <memory>
#include <vector>

#include "cache_line.h"
#include "cache_replacement_policy.h"
#include "cache_stats.h"
#include "caching_device.h"
#include "memref.h"
#include "prefetcher.h"

namespace dynamorio {
namespace drmemtrace {

class snoop_filter_t;

class cache_t : public caching_device_t {
public:
    explicit cache_t(const std::string &name = "cache")
        : caching_device_t(name)
    {
    }
    // Size, line size and associativity are generally used
    // to describe a CPU cache.
    // The id is an index into the snoop filter's array of caches for coherent caches.
    // If this is a coherent cache, id should be in the range [0,num_snooped_caches).
    bool
    init(int associativity, int64_t line_size, int64_t total_size,
         caching_device_t *parent, caching_device_stats_t *stats,
         std::unique_ptr<cache_replacement_policy_t> replacement_policy,
         prefetcher_t *prefetcher = nullptr,
         cache_inclusion_policy_t inclusion_policy =
             cache_inclusion_policy_t::NON_INC_NON_EXC,
         bool coherent_cache = false, int id_ = -1,
         snoop_filter_t *snoop_filter_ = nullptr,
         const std::vector<caching_device_t *> &children = {}) override;
    void
    request(const memref_t &memref) override;
    virtual void
    flush(const memref_t &memref);

protected:
    void
    init_blocks() override;
};

} // namespace drmemtrace
} // namespace dynamorio

#endif /* _CACHE_H_ */