Mercurial > hg > blitz_stable
annotate src/org/dancres/blitz/tools/dash/ChartPanel.java @ 23:b7e52953b7a6
Add some cache/memory statistics to help spot potential exhaustion and other tuning issues.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Fri, 28 Aug 2009 17:23:33 +0100 |
parents | 3dc0c5604566 |
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rev | line source |
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0
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1 package org.dancres.blitz.tools.dash; |
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2 |
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3 import java.awt.BorderLayout; |
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4 import java.util.ArrayList; |
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5 import java.util.HashMap; |
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6 import java.util.Map; |
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7 import javax.swing.JPanel; |
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8 |
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9 import org.dancres.blitz.tools.dash.graph.*; |
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10 |
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11 public class ChartPanel extends JPanel { |
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12 private Chart _chart = new Chart(); |
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13 private Map _lookup = new HashMap(); |
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14 private long[] _lastValues; |
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15 private final int MAX_SIZE = 100; |
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16 public ChartPanel() { |
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17 setLayout(new BorderLayout()); |
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18 add(_chart, BorderLayout.CENTER); |
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19 } |
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20 public void update(String[] names, long[] newValues) { |
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21 try { |
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22 if (_lastValues == null) { |
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23 doUpdate(names, newValues); |
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24 } |
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25 for (int i = 0; i < newValues.length; i++) { |
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26 if (newValues[i] != _lastValues[i]) { |
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27 doUpdate(names, newValues); |
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28 return; |
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29 } |
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30 } |
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31 } catch (Exception ex) { |
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32 ex.printStackTrace(); |
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33 } |
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34 } |
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35 private void doUpdate(String[] names, long[] newValues) throws Exception { |
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36 _lastValues = newValues; |
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37 for (int i = 0; i < newValues.length; i++) { |
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38 ArrayList history = (ArrayList) _lookup.get(names[i]); |
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39 if (history == null) { |
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40 if (newValues.length == 0 && newValues[i] == 0) { |
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41 return; |
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42 } |
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43 if (newValues.length > 0) { |
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44 //if they are all zero ommit |
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45 boolean ok = false; |
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46 for (int j = 0; !ok && j < newValues.length; j++) { |
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47 if (newValues[j] > 0) { |
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48 ok = true; |
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49 } |
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50 } |
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51 if (!ok) { |
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52 return; |
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53 } |
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54 } |
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55 |
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56 history = new ArrayList(); |
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57 _lookup.put(names[i], history); |
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58 //add twice the first time to get a line |
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59 history.add(new Long(newValues[i])); |
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60 //first time so add the data |
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61 long startVal=0;//newValues[i];// - 1; |
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62 //if(startVal<0){ |
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63 //startVal=0; |
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64 //} |
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65 addData(names[i], new double[]{startVal, newValues[i]}); |
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66 } else { |
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67 |
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68 history.add(new Long(newValues[i])); |
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69 int n = history.size(); |
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70 if (n > MAX_SIZE) { |
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71 n--; |
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72 history.remove(0); |
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73 |
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74 } |
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75 |
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76 double[] data = new double[n]; |
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77 String[] labels = new String[n]; |
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78 for (int j = 0; j < n; j++) { |
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79 labels[j] = ""; |
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80 data[j] = ((Long) history.get(j)).longValue(); |
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81 |
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82 } |
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83 labels[0] = "Last update: " + new java.util.Date(); |
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84 _chart.setDataAt(i, names[i], data, labels, null); |
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85 } |
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86 } |
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87 _chart.repaint(); |
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88 } |
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89 private void addData(String name, double[] data) throws Exception { |
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90 String[] labs = new String[data.length]; |
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91 labs[0] = "Last update: " + new java.util.Date(); |
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92 for (int i = 1; i < labs.length; i++) { |
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93 labs[i] = ""; |
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94 } |
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95 _chart.addData(name, data, labs); |
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96 } |
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97 } |