content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF 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.
   */
  package org.apache.asterix.common.context;
  
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  
  public abstract class Info {
  
      private static final Logger LOGGER = LogManager.getLogger();
  
      private final AtomicInteger referenceCount = new AtomicInteger();
      private volatile boolean isOpen;
  
      public Info() {
          isOpen = false;
      }
  
      public void touch() {
          referenceCount.incrementAndGet();
      }
  
      public void untouch() {
          int currentRefCount = referenceCount.get();
          if (currentRefCount <= 0) {
              LOGGER.warn("trying to decrement ref count {} that is already <=0", currentRefCount);
          }
          referenceCount.updateAndGet(i -> i > 0 ? i - 1 : i);
      }
  
      public int getReferenceCount() {
          return referenceCount.get();
      }
  
      public boolean isOpen() {
          return isOpen;
      }
  
      public void setOpen(boolean isOpen) {
          this.isOpen = isOpen;
      }
  }
  