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/*******************************************************************************
* Copyright (c) 2000, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.test.internal.performance;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.eclipse.test.internal.performance.data.DataPoint;
import org.eclipse.test.internal.performance.data.Sample;
/**
* Performance meter that makes its measurements with OS functionality.
*/
public class OSPerformanceMeter extends InternalPerformanceMeter {
private PerformanceMonitor fPerformanceMonitor;
private long fStartTime;
private List fDataPoints= new ArrayList();
/**
* @param scenarioId the scenario id
*/
public OSPerformanceMeter(String scenarioId) {
super(scenarioId);
fPerformanceMonitor= PerformanceMonitor.getPerformanceMonitor();
fStartTime= System.currentTimeMillis();
}
/*
* @see org.eclipse.test.performance.PerformanceMeter#dispose()
*/
public void dispose() {
fPerformanceMonitor= null;
fDataPoints= null;
super.dispose();
}
/*
* @see org.eclipse.test.performance.PerformanceMeter#start()
*/
public void start() {
snapshot(BEFORE);
}
/*
* @see org.eclipse.test.performance.PerformanceMeter#stop()
*/
public void stop() {
snapshot(AFTER);
}
/*
* @see org.eclipse.test.internal.performance.InternalPerformanceMeter#getSample()
*/
public Sample getSample() {
if (fDataPoints != null) {
HashMap runProperties= new HashMap();
collectRunInfo(runProperties);
return new Sample(getScenarioName(), fStartTime, runProperties, (DataPoint[]) fDataPoints.toArray(new DataPoint[fDataPoints.size()]));
}
return null;
}
//---- private stuff ------
private void snapshot(int step) {
HashMap map= new HashMap();
fPerformanceMonitor.collectOperatingSystemCounters(map);
fDataPoints.add(new DataPoint(step, map));
}
/**
* Write out the run element if it hasn't been written out yet.
* @param runProperties
*/
private void collectRunInfo(HashMap runProperties) {
fPerformanceMonitor.collectGlobalPerformanceInfo(runProperties);
}
}
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