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/*
* Copyright (c) 2013-2015 Advanced Micro Devices, Inc.
* All rights reserved.
*
* For use for simulation and test purposes only
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the copyright holder 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 HOLDER 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.
*
* Author: Sooraj Puthoor
*/
#ifndef __MEM_RUBY_SYSTEM_WEIGHTEDLRUPOLICY_HH__
#define __MEM_RUBY_SYSTEM_WEIGHTEDLRUPOLICY_HH__
#include "mem/ruby/structures/AbstractReplacementPolicy.hh"
#include "mem/ruby/structures/CacheMemory.hh"
#include "params/WeightedLRUReplacementPolicy.hh"
/* Simple true LRU replacement policy */
class WeightedLRUPolicy : public AbstractReplacementPolicy
{
public:
typedef WeightedLRUReplacementPolicyParams Params;
WeightedLRUPolicy(const Params* p);
~WeightedLRUPolicy();
void touch(int64_t set, int64_t way, Tick time) override;
void touch(int64_t set, int64_t way, Tick time, int occupancy);
int64_t getVictim(int64_t set) const override;
bool useOccupancy() const override { return true; }
CacheMemory * m_cache;
int **m_last_occ_ptr;
};
#endif // __MEM_RUBY_SYSTEM_WeightedLRUPolicy_HH__
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