src/mem/cache/compressors/base_dictionary_compressor.cc

   1 /*
   2  * Copyright (c) 2018-2019 Inria
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
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   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /** @file
  30  * Implementation of a base sim object for the templated dictionary-based
  31  * cache compressor.
  32  */
  33
  34 #include "mem/cache/compressors/dictionary_compressor.hh"
  35 #include "params/BaseDictionaryCompressor.hh"
  36
  37 BaseDictionaryCompressor::BaseDictionaryCompressor(const Params *p)
  38     : BaseCacheCompressor(p), dictionarySize(p->dictionary_size), numEntries(0)
  39 {
  40 }
  41
  42 void
  43 BaseDictionaryCompressor::regStats()
  44 {
  45     BaseCacheCompressor::regStats();
  46
  47     // We store the frequency of each pattern
  48     patternStats
  49         .init(getNumPatterns())
  50         .name(name() + ".pattern")
  51         .desc("Number of data entries that were compressed to this pattern.")
  52         ;
  53
  54     for (unsigned i = 0; i < getNumPatterns(); ++i) {
  55         patternStats.subname(i, getName(i));
  56         patternStats.subdesc(i, "Number of data entries that match pattern " +
  57                                 getName(i));
  58     }
  59 }