Mercurial > hg > blitz_stable

annotate src/org/dancres/blitz/stats/StatsBoard.java @ 32:243c74d599bf

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author Dan Creswell <dan.creswell@gmail.com>
date Sat, 12 Jun 2010 10:41:47 +0100
parents 3dc0c5604566
children
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1 package org.dancres.blitz.stats;
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2
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3 import java.util.LinkedList;
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4 import java.util.Iterator;
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5
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6 import java.util.logging.Logger;
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7
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8 import org.dancres.blitz.Logging;
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9
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10 /**
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11 All available performance statistics are held here.
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12 */
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13 public class StatsBoard {
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14 static final Logger theLogger =
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15 Logging.newLogger("org.dancres.blitz.stats.StatsBoard");
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16
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17 private static StatsBoard theBoard = new StatsBoard();
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18
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19 private LinkedList theStatGenerators = new LinkedList();
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20
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21 private long theNextId = 1;
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22
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23 private StatsBoard() {
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24 add(new MemoryStat());
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25 add(new HostStat());
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26 add(new ThreadStat());
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27 }
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28
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29 public static StatsBoard get() {
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30 return theBoard;
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31 }
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32
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33 public synchronized void add(StatGenerator aStat) {
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34 if (! theStatGenerators.contains(aStat)) {
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35 if (aStat.getId() == StatGenerator.UNSET_ID)
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36 aStat.setId(theNextId++);
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37
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38 theStatGenerators.add(aStat);
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39 }
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40 }
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41
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42 public synchronized void remove(StatGenerator aStat) {
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43 theStatGenerators.remove(aStat);
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44 }
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45
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46 public Stat[] getStats() {
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47 StatGenerator[] myGenerators;
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48
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49 synchronized(this) {
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50 myGenerators = new StatGenerator[theStatGenerators.size()];
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51 myGenerators =
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52 (StatGenerator[]) theStatGenerators.toArray(myGenerators);
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53 }
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54
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55 Stat[] myStats = new Stat[myGenerators.length];
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56
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57 for (int i = 0; i < myGenerators.length; i++) {
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58 myStats[i] = myGenerators[i].generate();
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59 }
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60
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61 return myStats;
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62 }
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63 }