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Reduce contention by using an Atomic Reference. 

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@633570 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Hiram R. Chirino 2008-03-04 17:52:14 +00:00
parent 1c8cfd9cfe
commit c84e58a948
1 changed files with 7 additions and 10 deletions
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17
activemq-core/src/main/java/org/apache/activemq/broker/MutableBrokerFilter.java
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@ -19,6 +19,8 @@ package org.apache.activemq.broker;
import java.net.URI;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.activemq.broker.region.Destination;
import org.apache.activemq.broker.region.MessageReference;
import org.apache.activemq.broker.region.Subscription;
@ -49,30 +51,25 @@ import org.apache.activemq.kaha.Store;
*/
public class MutableBrokerFilter implements Broker {
private Broker next;
private final Object mutext = new Object();
private AtomicReference<Broker> next = new AtomicReference<Broker>();
public MutableBrokerFilter(Broker next) {
this.next = next;
this.next.set(next);
}
public Broker getAdaptor(Class type) {
if (type.isInstance(this)) {
return this;
}
return next.getAdaptor(type);
return next.get().getAdaptor(type);
}
public Broker getNext() {
synchronized (mutext) {
return next;
}
return next.get();
}
public void setNext(Broker next) {
synchronized (mutext) {
this.next = next;
}
this.next.set(next);
}
public Map<ActiveMQDestination, Destination> getDestinationMap() {