com.alibaba.rocketmq.shade.io.netty.util.internal.LinkedQueueAtomicNode Maven / Gradle / Ivy

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/*
 * Copyright 2016 The Netty Project
 *
 * The Netty Project licenses this file to you 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.
 */
/*
 * 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 io.netty.util.internal;

import java.util.concurrent.atomic.AtomicReference;

/**
 * Forked from JCTools.
 */
public final class LinkedQueueAtomicNode extends AtomicReference> {
    /** */
    private static final long serialVersionUID = 2404266111789071508L;
    private E value;
    LinkedQueueAtomicNode() {
    }
    LinkedQueueAtomicNode(E val) {
        spValue(val);
    }
    /**
     * Gets the current value and nulls out the reference to it from this node.
     *
     * @return value
     */
    public E getAndNullValue() {
        E temp = lpValue();
        spValue(null);
        return temp;
    }

    public E lpValue() {
        return value;
    }

    public void spValue(E newValue) {
        value = newValue;
    }

    public void soNext(LinkedQueueAtomicNode n) {
        lazySet(n);
    }

    public LinkedQueueAtomicNode lvNext() {
        return get();
    }
}