/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jctools.queues;
import static org.jctools.util.UnsafeAccess.UNSAFE;
/**
* @see MpscLinkedQueue
*
* @author nitsanw
*
* @param <E>
*/
public class MpscLinkedQueue7<E> extends MpscLinkedQueue<E> {
@SuppressWarnings("unchecked")
protected final LinkedQueueNode<E> xchgProducerNode(LinkedQueueNode<E> newVal) {
Object oldVal;
do {
oldVal = producerNode;
} while(!UNSAFE.compareAndSwapObject(this, P_NODE_OFFSET, oldVal, newVal));
return (LinkedQueueNode<E>) oldVal;
}
}