performancetest1.java

来自「Jfreechart 源码例子 是和jfreechart developmen」· Java 代码 · 共 161 行

package demo;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.time.FixedMillisecond;
import org.jfree.data.time.Millisecond;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RectangleInsets;
import org.jfree.ui.RefineryUtilities;

public class PerformanceTest1 extends ApplicationFrame
{
  private TimeSeries timings = new TimeSeries("Timings", Millisecond.class);

  public PerformanceTest1(String paramString)
  {
    super(paramString);
    TimeSeriesCollection localTimeSeriesCollection = new TimeSeriesCollection(this.timings);
    JFreeChart localJFreeChart = createChart(localTimeSeriesCollection);
    ChartPanel localChartPanel = new ChartPanel(localJFreeChart);
    localChartPanel.setPreferredSize(new Dimension(500, 270));
    localChartPanel.setMouseZoomable(true, false);
    setContentPane(localChartPanel);
  }

  private static JFreeChart createChart(XYDataset paramXYDataset)
  {
    JFreeChart localJFreeChart = ChartFactory.createTimeSeriesChart("Performance Test 1", "Time", "Milliseconds", paramXYDataset, true, true, false);
    localJFreeChart.setBackgroundPaint(Color.white);
    XYPlot localXYPlot = (XYPlot)localJFreeChart.getPlot();
    localXYPlot.setBackgroundPaint(Color.lightGray);
    localXYPlot.setDomainGridlinePaint(Color.white);
    localXYPlot.setRangeGridlinePaint(Color.white);
    localXYPlot.setAxisOffset(new RectangleInsets(5.0D, 5.0D, 5.0D, 5.0D));
    localXYPlot.setDomainCrosshairVisible(true);
    localXYPlot.setRangeCrosshairVisible(true);
    XYItemRenderer localXYItemRenderer = localXYPlot.getRenderer();
    if (localXYItemRenderer instanceof StandardXYItemRenderer)
    {
      StandardXYItemRenderer localStandardXYItemRenderer = (StandardXYItemRenderer)localXYItemRenderer;
      localStandardXYItemRenderer.setSeriesStroke(0, new BasicStroke(1.1000000238418579F));
    }
    return localJFreeChart;
  }

  public static JPanel createDemoPanel()
  {
    JFreeChart localJFreeChart = createChart(null);
    return new ChartPanel(localJFreeChart);
  }

  public void addObservation(long paramLong)
  {
    this.timings.addOrUpdate(new Millisecond(), paramLong);
  }

  public static void main2(String[] paramArrayOfString)
  {
    PerformanceTest1 localPerformanceTest1 = new PerformanceTest1("Performance Test 1");
    localPerformanceTest1.pack();
    RefineryUtilities.centerFrameOnScreen(localPerformanceTest1);
    localPerformanceTest1.setVisible(true);
    TimeSeries localTimeSeries = new TimeSeries("Test", Millisecond.class);
    localTimeSeries.setMaximumItemAge(200L);
    while (true)
    {
      Millisecond localMillisecond = new Millisecond();
      long l1 = System.currentTimeMillis();
      for (int i = 0; i < 200; ++i)
      {
        localMillisecond = (Millisecond)localMillisecond.next();
        localTimeSeries.addOrUpdate(localMillisecond, 1D);
      }
      long l2 = System.currentTimeMillis();
      localPerformanceTest1.addObservation(l2 - l1);
    }
  }

  public static void main4(String[] paramArrayOfString)
  {
    TimeSeries localTimeSeries = new TimeSeries("Test");
    localTimeSeries.setMaximumItemCount(4000);
    FixedMillisecond localFixedMillisecond = new FixedMillisecond();
    for (int i = 0; i < 40000; ++i)
    {
      long l1 = System.currentTimeMillis();
      for (int j = 0; j < 400; ++j)
      {
        localFixedMillisecond = (FixedMillisecond)localFixedMillisecond.next();
        localTimeSeries.add(localFixedMillisecond, Math.random());
      }
      long l2 = System.currentTimeMillis();
      System.out.println(i + " --> " + (l2 - l1) + " (" + Runtime.getRuntime().freeMemory() + " / " + Runtime.getRuntime().totalMemory() + ")");
    }
  }

  public static void main5(String[] paramArrayOfString)
  {
    XYSeries localXYSeries = new XYSeries("Test");
    localXYSeries.setMaximumItemCount(4000);
    int i = 0;
    for (int j = 0; j < 40000; ++j)
    {
      long l1 = System.currentTimeMillis();
      for (int k = 0; k < 4000; ++k)
        localXYSeries.add(i++, Math.random());
      long l2 = System.currentTimeMillis();
      System.out.println(j + " --> " + (l2 - l1) + " (" + Runtime.getRuntime().freeMemory() + " / " + Runtime.getRuntime().totalMemory() + ")");
    }
  }

  public static void main(String[] paramArrayOfString)
  {
    ArrayList localArrayList = new ArrayList();
    for (int i = 0; i < 4000; ++i)
      localArrayList.add(new Double(Math.random()));
    i = 0;
    for (int j = 0; j < 20000; ++j)
    {
      long l1 = System.currentTimeMillis();
      for (int k = 0; k < 1000000; ++k)
        i += k;
      long l2 = System.currentTimeMillis();
      System.out.println(j + " --> " + (l2 - l1) + " (" + Runtime.getRuntime().freeMemory() + " / " + Runtime.getRuntime().totalMemory() + ")");
    }
  }

  public static void main3(String[] paramArrayOfString)
  {
    ArrayList localArrayList = new ArrayList();
    Millisecond localMillisecond = new Millisecond();
    for (int i = 0; i < 200; ++i)
    {
      localMillisecond = (Millisecond)localMillisecond.next();
      localArrayList.add(localMillisecond);
    }
    for (i = 0; i < 2000; ++i)
    {
      long l1 = System.currentTimeMillis();
      Collections.binarySearch(localArrayList, new Millisecond());
      long l2 = System.currentTimeMillis();
      System.out.println(i + " --> " + (l2 - l1) + " (" + Runtime.getRuntime().freeMemory() + " / " + Runtime.getRuntime().totalMemory() + ")");
    }
  }
}