WeightedLRUPolicy.hh revision 11341
111308Santhony.gutierrez@amd.com/* 211308Santhony.gutierrez@amd.com * Copyright (c) 2013-2015 Advanced Micro Devices, Inc. 311308Santhony.gutierrez@amd.com * All rights reserved. 411308Santhony.gutierrez@amd.com * 511308Santhony.gutierrez@amd.com * For use for simulation and test purposes only 611308Santhony.gutierrez@amd.com * 711308Santhony.gutierrez@amd.com * Redistribution and use in source and binary forms, with or without 811308Santhony.gutierrez@amd.com * modification, are permitted provided that the following conditions are met: 911308Santhony.gutierrez@amd.com * 1011308Santhony.gutierrez@amd.com * 1. Redistributions of source code must retain the above copyright notice, 1111308Santhony.gutierrez@amd.com * this list of conditions and the following disclaimer. 1211308Santhony.gutierrez@amd.com * 1311308Santhony.gutierrez@amd.com * 2. Redistributions in binary form must reproduce the above copyright notice, 1411308Santhony.gutierrez@amd.com * this list of conditions and the following disclaimer in the documentation 1511308Santhony.gutierrez@amd.com * and/or other materials provided with the distribution. 1611308Santhony.gutierrez@amd.com * 1711308Santhony.gutierrez@amd.com * 3. Neither the name of the copyright holder nor the names of its contributors 1811308Santhony.gutierrez@amd.com * may be used to endorse or promote products derived from this software 1911308Santhony.gutierrez@amd.com * without specific prior written permission. 2011308Santhony.gutierrez@amd.com * 2111308Santhony.gutierrez@amd.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 2211308Santhony.gutierrez@amd.com * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2311308Santhony.gutierrez@amd.com * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2411308Santhony.gutierrez@amd.com * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 2511308Santhony.gutierrez@amd.com * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2611308Santhony.gutierrez@amd.com * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2711308Santhony.gutierrez@amd.com * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2811308Santhony.gutierrez@amd.com * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2911308Santhony.gutierrez@amd.com * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 3011308Santhony.gutierrez@amd.com * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 3111308Santhony.gutierrez@amd.com * POSSIBILITY OF SUCH DAMAGE. 3211308Santhony.gutierrez@amd.com * 3311308Santhony.gutierrez@amd.com * Author: Sooraj Puthoor 3411308Santhony.gutierrez@amd.com */ 3511308Santhony.gutierrez@amd.com 3611308Santhony.gutierrez@amd.com#ifndef __MEM_RUBY_SYSTEM_WEIGHTEDLRUPOLICY_HH__ 3711308Santhony.gutierrez@amd.com#define __MEM_RUBY_SYSTEM_WEIGHTEDLRUPOLICY_HH__ 3811308Santhony.gutierrez@amd.com 3911308Santhony.gutierrez@amd.com#include "mem/ruby/structures/AbstractReplacementPolicy.hh" 4011308Santhony.gutierrez@amd.com#include "mem/ruby/structures/CacheMemory.hh" 4111308Santhony.gutierrez@amd.com#include "params/WeightedLRUReplacementPolicy.hh" 4211308Santhony.gutierrez@amd.com 4311308Santhony.gutierrez@amd.com/* Simple true LRU replacement policy */ 4411308Santhony.gutierrez@amd.com 4511308Santhony.gutierrez@amd.comclass WeightedLRUPolicy : public AbstractReplacementPolicy 4611308Santhony.gutierrez@amd.com{ 4711308Santhony.gutierrez@amd.com public: 4811308Santhony.gutierrez@amd.com typedef WeightedLRUReplacementPolicyParams Params; 4911308Santhony.gutierrez@amd.com WeightedLRUPolicy(const Params* p); 5011308Santhony.gutierrez@amd.com ~WeightedLRUPolicy(); 5111308Santhony.gutierrez@amd.com 5211341Sandreas.hansson@arm.com void touch(int64_t set, int64_t way, Tick time) override; 5311308Santhony.gutierrez@amd.com void touch(int64_t set, int64_t way, Tick time, int occupancy); 5411308Santhony.gutierrez@amd.com int64_t getVictim(int64_t set) const override; 5511308Santhony.gutierrez@amd.com 5611341Sandreas.hansson@arm.com bool useOccupancy() const override { return true; } 5711308Santhony.gutierrez@amd.com 5811308Santhony.gutierrez@amd.com CacheMemory * m_cache; 5911308Santhony.gutierrez@amd.com int **m_last_occ_ptr; 6011308Santhony.gutierrez@amd.com}; 6111308Santhony.gutierrez@amd.com 6211308Santhony.gutierrez@amd.com#endif // __MEM_RUBY_SYSTEM_WeightedLRUPolicy_HH__ 63