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annotate src/org/dancres/blitz/txn/CheckpointTask.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
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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1 package org.dancres.blitz.txn;
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2
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3 import java.io.IOException;
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4
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5 import java.util.logging.Level;
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6
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7 import org.dancres.blitz.task.Task;
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8
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9 class CheckpointTask implements Task {
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10 private boolean isDone = false;
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11 private IOException theIOE = null;
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12
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13 public void run() {
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14 try {
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15 TxnManager.get().requestAsyncCheckpoint();
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16 } catch (IOException anIOE) {
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17 TxnManager.theLogger.log(Level.SEVERE,
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18 "Checkpoint failed to complete",
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19 anIOE);
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20 theIOE = anIOE;
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21 }
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22
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23 synchronized(this) {
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24 isDone = true;
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25 notify();
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26 }
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27 }
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28
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29 void waitForCompletion() throws IOException {
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30 synchronized(this) {
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31 while (!isDone) {
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32 try {
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33 wait();
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34 } catch (InterruptedException anIE) {
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35 TxnManager.theLogger.log(Level.SEVERE,
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36 "Failed to wait for checkpoint completion",
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37 anIE);
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38 }
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39 }
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40
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41 if (theIOE != null)
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42 throw theIOE;
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43 }
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44 }
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45 }