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/*
* Copyright (c) 2003 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.
*/
//
// Abstract base class for a generic predictor
//
//
#ifndef __PREDICTOR_HH__
#define __PREDICTOR_HH__
struct stat_sdb_t;
class GenericPredictor {
public:
virtual void clear() = 0;
virtual unsigned predict(unsigned long _index) = 0;
virtual unsigned predict(unsigned long _index, unsigned &pdata) = 0;
virtual unsigned peek(unsigned long _index) = 0;
virtual void record(unsigned long _index, unsigned _actual_value,
unsigned _pred_value) = 0;
virtual void record(unsigned long _index, unsigned _actual_value,
unsigned _pred_value, unsigned _pdata) = 0;
virtual unsigned value(unsigned long _index) = 0;
virtual void regStats() = 0;
virtual void regFormulas() = 0;
virtual ~GenericPredictor() {};
};
#endif // __PREDICTOR_HH__
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