src/mem/cache/compressors/base_dictionary_compressor.cc

/*
 * Copyright (c) 2018-2019 Inria
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
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 * 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
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors: Daniel Carvalho
 */

/** @file
 * Implementation of a base sim object for the templated dictionary-based
 * cache compressor.
 */

#include "mem/cache/compressors/dictionary_compressor.hh"
#include "params/BaseDictionaryCompressor.hh"

BaseDictionaryCompressor::BaseDictionaryCompressor(const Params *p)
    : BaseCacheCompressor(p), dictionarySize(p->dictionary_size), numEntries(0)
{
}

void
BaseDictionaryCompressor::regStats()
{
    BaseCacheCompressor::regStats();

    // We store the frequency of each pattern
    patternStats
        .init(getNumPatterns())
        .name(name() + ".pattern")
        .desc("Number of data entries that were compressed to this pattern.")
        ;

    for (unsigned i = 0; i < getNumPatterns(); ++i) {
        patternStats.subname(i, getName(i));
        patternStats.subdesc(i, "Number of data entries that match pattern " +
                                getName(i));
    }
}