text: /**
   * 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
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * Authors: Daniel Carvalho
   */
  
  #include "mem/cache/replacement_policies/bip_rp.hh"
  
  #include <memory>
  
  #include "base/random.hh"
  #include "params/BIPRP.hh"
  
  BIPRP::BIPRP(const Params *p)
      : LRURP(p), btp(p->btp)
  {
  }
  
  void
  BIPRP::reset(const std::shared_ptr<ReplacementData>& replacement_data) const
  {
      std::shared_ptr<LRUReplData> casted_replacement_data =
          std::static_pointer_cast<LRUReplData>(replacement_data);
  
      // Entries are inserted as MRU if lower than btp, LRU otherwise
      if (random_mt.random<unsigned>(1, 100) <= btp) {
          casted_replacement_data->lastTouchTick = curTick();
      } else {
          // Make their timestamps as old as possible, so that they become LRU
          casted_replacement_data->lastTouchTick = 1;
      }
  }
  
  BIPRP*
  BIPRPParams::create()
  {
      return new BIPRP(this);
  }
  