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it's ensure dispatching happens in order 

git-svn-id: https://svn.apache.org/repos/asf/incubator/activemq/trunk@490111 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Davies 2006-12-25 07:19:29 +00:00
parent d8674a0fed
commit c651ace525
1 changed files with 28 additions and 20 deletions
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8
activemq-core/src/main/java/org/apache/activemq/broker/region/PrefetchSubscription.java
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@ -22,6 +22,7 @@ import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.jms.InvalidSelectorException;
import javax.jms.JMSException;
import org.apache.activemq.broker.Broker;
@ -60,6 +61,7 @@ abstract public class PrefetchSubscription extends AbstractSubscription{
protected long enqueueCounter;
protected long dispatchCounter;
protected long dequeueCounter;
private AtomicBoolean dispatching = new AtomicBoolean();
public PrefetchSubscription(Broker broker,ConnectionContext context,ConsumerInfo info, PendingMessageCursor cursor)
throws InvalidSelectorException{
@ -389,6 +391,8 @@ abstract public class PrefetchSubscription extends AbstractSubscription{
protected void dispatchMatched() throws IOException{
if(dispatching.compareAndSet(false,true)){
try{
List toDispatch=null;
synchronized(pending){
try{
@ -416,6 +420,10 @@ abstract public class PrefetchSubscription extends AbstractSubscription{
dispatch(node);
}
}
}finally{
dispatching.set(false);
}
}
}
protected boolean dispatch(final MessageReference node) throws IOException{