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-/*
- * Copyright (c) 2003-2005 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.
- */
-
-#include <sstream>
-
-#include "base/sat_counter.hh"
-#include "base/statistics.hh"
-#include "sim/stats.hh"
-
-
-using namespace std;
-
-
-SaturatingCounterPred::SaturatingCounterPred(string p_name,
- string z_name,
- string o_name,
- unsigned _index_bits,
- unsigned _counter_bits,
- unsigned _zero_change,
- unsigned _one_change,
- unsigned _thresh,
- unsigned _init_value)
-{
- pred_name = p_name;
- zero_name = z_name;
- one_name = o_name;
-
- index_bits = _index_bits;
- counter_bits = _counter_bits;
- zero_change = _zero_change;
- one_change = _one_change;
- thresh = _thresh;
- init_value = _init_value;
-
- max_index = (1 << index_bits) - 1;
- max_value = (1 << counter_bits) - 1;
-
- table = new unsigned[max_index + 1];
-
- // Initialize with the right parameters & clear the counter
- for (int i = 0; i <= max_index; ++i)
- table[i] = init_value;
-}
-
-void SaturatingCounterPred::regStats()
-{
- using namespace Stats;
- stringstream name, description;
-
- //
- // Number of predictions
- //
- name << pred_name << ":" << zero_name << ":preds";
- description << "number of predictions of " << zero_name;
- predicted_zero
- .name(name.str())
- .desc(description.str())
- ;
- description.str("");
- name.str("");
-
- name << pred_name << ":" << one_name << ":preds";
- description << "number of predictions of " << one_name;
- predicted_one
- .name(name.str())
- .desc(description.str())
- ;
- description.str("");
- name.str("");
-
- //
- // Count the number of correct predictions
- //
- name << pred_name << ":" << zero_name << ":corr_preds";
- description << "number of correct " << zero_name << " preds";
- correct_pred_zero
- .name(name.str())
- .desc(description.str())
- ;
- description.str("");
- name.str("");
-
- name << pred_name << ":" << one_name << ":corr_preds";
- description << "number of correct " << one_name << " preds";
- correct_pred_one
- .name(name.str())
- .desc(description.str())
- ;
- description.str("");
- name.str("");
-
- //
- // Number of predictor updates
- //
- name << pred_name << ":" << zero_name << ":updates";
- description << "number of actual " << zero_name << "s";
- record_zero
- .name(name.str())
- .desc(description.str())
- ;
- description.str("");
- name.str("");
-
- name << pred_name << ":" << one_name << ":updates";
- description << "number of actual " << one_name << "s";
- record_one
- .name(name.str())
- .desc(description.str())
- ;
- description.str("");
- name.str("");
-}
-
-void SaturatingCounterPred::regFormulas()
-{
- using namespace Stats;
- stringstream name, description;
-
- //
- // Number of predictions
- //
- name << pred_name << ":predictions";
- preds_total
- .name(name.str())
- .desc("total number of predictions made")
- ;
- preds_total = predicted_zero + predicted_one;
- name.str("");
-
- //
- // Fraction of all predictions that are one or zero
- //
- name << pred_name << ":" << zero_name << ":pred_frac";
- description << "fraction of all preds that were " << zero_name;
- pred_frac_zero
- .name(name.str())
- .desc(description.str())
- ;
- pred_frac_zero = 100 * predicted_zero / preds_total;
- description.str("");
- name.str("");
-
- name << pred_name << ":" << one_name << ":pred_frac";
- description << "fraction of all preds that were " << one_name;
- pred_frac_one
- .name(name.str())
- .desc(description.str())
- ;
- pred_frac_one = 100 * predicted_one / preds_total;
- description.str("");
- name.str("");
-
-
- //
- // Count the number of correct predictions
- //
- name << pred_name << ":correct_preds";
- correct_total
- .name(name.str())
- .desc("total correct predictions made")
- ;
- correct_total = correct_pred_one + correct_pred_zero;
- name.str("");
-
- //
- // Number of predictor updates
- //
- name << pred_name << ":updates";
- updates_total
- .name(name.str())
- .desc("total number of updates")
- ;
- updates_total = record_zero + record_one;
- name.str("");
-
- //
- // Prediction accuracy rates
- //
- name << pred_name << ":pred_rate";
- pred_rate
- .name(name.str())
- .desc("correct fraction of all preds")
- ;
- pred_rate = correct_total / updates_total;
- name.str("");
-
- name << pred_name << ":" << zero_name << ":pred_rate";
- description << "fraction of " << zero_name << " preds that were correct";
- frac_correct_zero
- .name(name.str())
- .desc(description.str())
- ;
- frac_correct_zero = 100 * correct_pred_zero /
- (correct_pred_zero + record_one - correct_pred_one);
- description.str("");
- name.str("");
-
- name << pred_name << ":" << one_name << ":pred_rate";
- description << "fraction of " << one_name << " preds that were correct";
- frac_correct_one
- .name(name.str())
- .desc(description.str())
- ;
- frac_correct_one = 100 * correct_pred_one /
- (correct_pred_one + record_zero - correct_pred_zero);
- description.str("");
- name.str("");
-
- //
- // Coverage
- //
- name << pred_name << ":" << zero_name << ":coverage";
- description << "fraction of " << zero_name
- << "s that were predicted correctly";
- coverage_zero
- .name(name.str())
- .desc(description.str())
- ;
- coverage_zero = 100 * correct_pred_zero / record_zero;
- description.str("");
- name.str("");
-
- name << pred_name << ":" << one_name << ":coverage";
- description << "fraction of " << one_name
- << "s that were predicted correctly";
- coverage_one
- .name(name.str())
- .desc(description.str())
- ;
- coverage_one = 100 * correct_pred_one / record_one;
- description.str("");
- name.str("");
-}
-
-
-
-
-
-
-
-
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