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annotate src/org/dancres/blitz/entry/CountersImpl.java @ 35:6f68e94c1fb8 default tip

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Add CondensedStats monitoring utility, equivalent to vmstat
author Dominic Cleal <dominic-cleal@cdo2.com>
date Thu, 05 Aug 2010 11:07:25 +0100
parents 3dc0c5604566
children
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3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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1 package org.dancres.blitz.entry;
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2
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3 /**
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4 Manages operation and instance counters
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5 */
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6 class CountersImpl implements Counters {
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7 private OpSwitchListener theOpSwitchListener;
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8 private InstanceSwitchListener theInstanceSwitchListener;
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9
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10 CountersImpl(String aType, int anInitialCount) {
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11 theOpSwitchListener = new OpSwitchListener(aType);
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12 theInstanceSwitchListener =
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13 new InstanceSwitchListener(aType, anInitialCount);
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14 }
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15
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16 public int getInstanceCount() {
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17 return theInstanceSwitchListener.getTotal();
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18 }
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19
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20 public void didRead() {
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21 // Reads are only relevant to op counts not instance counts
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22 theOpSwitchListener.didRead();
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23 }
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24
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25 public void didTake() {
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26 theOpSwitchListener.didTake();
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27 theInstanceSwitchListener.took();
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28 }
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30 public void didWrite() {
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31 theOpSwitchListener.didWrite();
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32 theInstanceSwitchListener.wrote();
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33 }
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34
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35 public void didPurge() {
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36 theInstanceSwitchListener.took();
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37 }
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38
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39 void destroy() {
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40 theOpSwitchListener.destroy();
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41 theInstanceSwitchListener.destroy();
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42 }
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43 }