content: /*
   *    Copyright (C) 2016 Amit Shekhar
   *    Copyright (C) 2011 Android Open Source Project
   *
   *    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 com.glidebitmappool.internal;
  
  import java.util.Queue;
  
  /**
   * Created by amitshekhar on 17/06/16.
   */
  abstract class BaseKeyPool<T extends Poolable> {
      private static final int MAX_SIZE = 20;
      private final Queue<T> keyPool = Util.createQueue(MAX_SIZE);
  
      protected T get() {
          T result = keyPool.poll();
          if (result == null) {
              result = create();
          }
          return result;
      }
  
      public void offer(T key) {
          if (keyPool.size() < MAX_SIZE) {
              keyPool.offer(key);
          }
      }
  
      protected abstract T create();
  }
  
  