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-/*
- * Copyright (c) 2002-2005 The Regents of The University of Michigan
- * 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: Erik Hallnor
- * Steve Reinhardt
- * Nathan Binkert
- */
-
-/**
- * @file
- * Declaration of a base replacement policy class.
- */
-
-#ifndef __REPL_HH__
-#define __REPL_HH__
-
-#include <list>
-#include <string>
-
-#include "base/types.hh"
-#include "cpu/smt.hh"
-#include "sim/sim_object.hh"
-
-class IIC;
-
-/**
- * A pure virtual base class that defines the interface of a replacement
- * policy.
- */
-class Repl : public SimObject
-{
- public:
- /** Pointer to the IIC using this policy. */
- IIC *iic;
-
- Repl (const Params *params)
- : SimObject(params)
- {
- iic = NULL;
- }
-
- /**
- * Set the back pointer to the IIC.
- * @param iic_ptr Pointer to the IIC.
- */
- void setIIC(IIC *iic_ptr)
- {
- iic = iic_ptr;
- }
-
- /**
- * Returns the tag pointer of the cache block to replace.
- * @return The tag to replace.
- */
- virtual unsigned long getRepl() = 0;
-
- /**
- * Update replacement data
- */
- virtual void doAdvance(std::list<unsigned long> &demoted) = 0;
-
- /**
- * Add a tag to the replacement policy and return a pointer to the
- * replacement entry.
- * @param tag_index The tag to add.
- * @return The replacement entry.
- */
- virtual void* add(unsigned long tag_index) = 0;
-
- /**
- * Register statistics.
- * @param name The name to prepend to statistic descriptions.
- */
- virtual void regStatsWithSuffix(const std::string name) = 0;
-
- /**
- * Update the tag pointer to when the tag moves.
- * @param re The replacement entry of the tag.
- * @param old_index The old tag pointer.
- * @param new_index The new tag pointer.
- * @return 1 if successful, 0 otherwise.
- */
- virtual int fixTag(void *re, unsigned long old_index,
- unsigned long new_index) = 0;
-
- /**
- * Remove this entry from the replacement policy.
- * @param re The replacement entry to remove
- */
- virtual void removeEntry(void *re) = 0;
-};
-
-#endif /* SMT_REPL_HH */