net.sf.ehcache.util.AtomicLongSequence Maven / Gradle / Ivy

/**
 *  Copyright Terracotta, Inc.
 *
 *  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 net.sf.ehcache.util;

import java.util.concurrent.atomic.AtomicLong;

/**
 * Simple non-persistent implementation of {@link LongSequence}
 *
 * @author twu
 */
public class AtomicLongSequence implements LongSequence {
  private final AtomicLong counter = new AtomicLong(0);

  @Override
  public long next() {
    return counter.incrementAndGet();
  }
}