compressed_tags.hh

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/*
 * Copyright (c) 2018 Inria
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 *
 * Authors: Daniel Carvalho
 */

#ifndef __MEM_CACHE_TAGS_COMPRESSED_TAGS_HH__
#define __MEM_CACHE_TAGS_COMPRESSED_TAGS_HH__

#include <vector>

#include "mem/cache/tags/sector_tags.hh"
#include "mem/cache/tags/super_blk.hh"

class BaseCache;
class CacheBlk;
struct CompressedTagsParams;

class CompressedTags : public SectorTags
{
  private:
    std::vector<CompressionBlk> blks;
    std::vector<SuperBlk> superBlks;

  public:
     typedef CompressedTagsParams Params;

    CompressedTags(const Params *p);

    virtual ~CompressedTags() {};

    void tagsInit() override;

    CacheBlk* findVictim(Addr addr, const bool is_secure,
                         const std::size_t compressed_size,
                         std::vector<CacheBlk*>& evict_blks) override;

    void insertBlock(const PacketPtr pkt, CacheBlk *blk) override;

    void forEachBlk(std::function<void(CacheBlk &)> visitor) override;

    bool anyBlk(std::function<bool(CacheBlk &)> visitor) override;
};

#endif //__MEM_CACHE_TAGS_COMPRESSED_TAGS_HH__