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CalculateCountSubSingleStatistic.java
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CalculateCountSubSingleStatistic.java
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/*
* Copyright 2011 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.optaplanner.benchmark.impl.statistic.calculatecount;
import java.util.List;
import org.optaplanner.benchmark.config.statistic.ProblemStatisticType;
import org.optaplanner.benchmark.impl.result.SubSingleBenchmarkResult;
import org.optaplanner.benchmark.impl.statistic.ProblemBasedSubSingleStatistic;
import org.optaplanner.core.api.domain.solution.Solution;
import org.optaplanner.core.api.solver.Solver;
import org.optaplanner.core.impl.phase.event.PhaseLifecycleListenerAdapter;
import org.optaplanner.core.impl.phase.scope.AbstractStepScope;
import org.optaplanner.core.impl.score.definition.ScoreDefinition;
import org.optaplanner.core.impl.solver.DefaultSolver;
import org.optaplanner.core.impl.solver.scope.DefaultSolverScope;
public class CalculateCountSubSingleStatistic extends ProblemBasedSubSingleStatistic<CalculateCountStatisticPoint> {
private final long timeMillisThresholdInterval;
private final CalculateCountSubSingleStatisticListener listener;
public CalculateCountSubSingleStatistic(SubSingleBenchmarkResult subSingleBenchmarkResult) {
this(subSingleBenchmarkResult, 1000L);
}
public CalculateCountSubSingleStatistic(SubSingleBenchmarkResult benchmarkResult, long timeMillisThresholdInterval) {
super(benchmarkResult, ProblemStatisticType.CALCULATE_COUNT_PER_SECOND);
if (timeMillisThresholdInterval <= 0L) {
throw new IllegalArgumentException("The timeMillisThresholdInterval (" + timeMillisThresholdInterval
+ ") must be bigger than 0.");
}
this.timeMillisThresholdInterval = timeMillisThresholdInterval;
listener = new CalculateCountSubSingleStatisticListener();
}
// ************************************************************************
// Lifecycle methods
// ************************************************************************
public void open(Solver<Solution> solver) {
((DefaultSolver<Solution>) solver).addPhaseLifecycleListener(listener);
}
public void close(Solver<Solution> solver) {
((DefaultSolver<Solution>) solver).removePhaseLifecycleListener(listener);
}
private class CalculateCountSubSingleStatisticListener extends PhaseLifecycleListenerAdapter {
private long nextTimeMillisThreshold = timeMillisThresholdInterval;
private long lastTimeMillisSpent = 0L;
private long lastCalculateCount = 0L;
@Override
public void stepEnded(AbstractStepScope stepScope) {
long timeMillisSpent = stepScope.getPhaseScope().calculateSolverTimeMillisSpent();
if (timeMillisSpent >= nextTimeMillisThreshold) {
DefaultSolverScope solverScope = stepScope.getPhaseScope().getSolverScope();
long calculateCount = solverScope.getCalculateCount();
long calculateCountInterval = calculateCount - lastCalculateCount;
long timeMillisSpentInterval = timeMillisSpent - lastTimeMillisSpent;
if (timeMillisSpentInterval == 0L) {
// Avoid divide by zero exception on a fast CPU
timeMillisSpentInterval = 1L;
}
long averageCalculateCountPerSecond = calculateCountInterval * 1000L / timeMillisSpentInterval;
pointList.add(new CalculateCountStatisticPoint(timeMillisSpent, averageCalculateCountPerSecond));
lastCalculateCount = calculateCount;
lastTimeMillisSpent = timeMillisSpent;
nextTimeMillisThreshold += timeMillisThresholdInterval;
if (nextTimeMillisThreshold < timeMillisSpent) {
nextTimeMillisThreshold = timeMillisSpent;
}
}
}
}
// ************************************************************************
// CSV methods
// ************************************************************************
@Override
protected String getCsvHeader() {
return CalculateCountStatisticPoint.buildCsvLine("timeMillisSpent", "calculateCountPerSecond");
}
@Override
protected CalculateCountStatisticPoint createPointFromCsvLine(ScoreDefinition scoreDefinition,
List<String> csvLine) {
return new CalculateCountStatisticPoint(Long.valueOf(csvLine.get(0)),
Long.valueOf(csvLine.get(1)));
}
}