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annotate src/org/dancres/blitz/stats/MemoryStat.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 /**
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4 <p>Tracks memory usage statistics. This stat is permanently enabled and
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5 cannot be switched on or off. It's maintenance costs are entirely absorbed
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6 by the caller recovering stats from StatsBoard.</p>
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7 */
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8 public class MemoryStat implements Stat, StatGenerator {
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9 private long theId = StatGenerator.UNSET_ID;
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10
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11 private long theMaxMemory;
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12 private long theCurrentMemory;
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13
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14 MemoryStat() {
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15 }
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17 MemoryStat(long anId, long aMaxMem, long aCurrentMem) {
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18 theId = anId;
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19 theMaxMemory = aMaxMem;
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20 theCurrentMemory = aCurrentMem;
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21 }
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22
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23 public void setId(long anId) {
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24 theId = anId;
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25 }
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27 public long getId() {
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28 return theId;
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29 }
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31 public synchronized Stat generate() {
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32 MemoryStat myStat = new MemoryStat(theId,
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33 Runtime.getRuntime().maxMemory(),
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34 Runtime.getRuntime().totalMemory());
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35 return myStat;
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36 }
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37
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38 public long getMaxMemory() {
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39 return theMaxMemory;
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40 }
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41
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42 public long getCurrentMemory() {
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43 return theCurrentMemory;
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44 }
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45
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46 public String toString() {
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47 return "Memory: " + theCurrentMemory + " of: " + theMaxMemory;
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48 }
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49 }