5287945a8b
This patch changes the cache implementation to rely on virtual methods rather than using the replacement policy as a template argument. There is no impact on the simulation performance, and overall the changes make it easier to modify (and subclass) the cache and/or replacement policy.
69 lines
2.5 KiB
C++
69 lines
2.5 KiB
C++
/*
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* Copyright (c) 2014 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Anthony Gutierrez
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*/
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/**
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* @file
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* Declaration of a random replacement tag store.
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* The RandomRepl tags first try to evict an invalid
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* block. If no invalid blocks are found, a candidate
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* for eviction is found at random.
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*/
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#ifndef __MEM_CACHE_TAGS_RANDOM_REPL_HH__
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#define __MEM_CACHE_TAGS_RANDOM_REPL_HH__
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#include "mem/cache/tags/base_set_assoc.hh"
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#include "params/RandomRepl.hh"
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class RandomRepl : public BaseSetAssoc
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{
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public:
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/** Convenience typedef. */
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typedef RandomReplParams Params;
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/**
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* Construct and initiliaze this tag store.
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*/
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RandomRepl(const Params *p);
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/**
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* Destructor
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*/
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~RandomRepl() {}
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CacheBlk* accessBlock(Addr addr, bool is_secure, Cycles &lat,
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int context_src);
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CacheBlk* findVictim(Addr addr);
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void insertBlock(PacketPtr pkt, BlkType *blk);
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void invalidate(CacheBlk *blk);
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};
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#endif // __MEM_CACHE_TAGS_RANDOM_REPL_HH__
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