Android Open Source - rfcx-guardian-android Array Recycler

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright (C) 2010  Preston Lacey http://javaflacencoder.sourceforge.net/
 * All Rights Reserved./*from   w w w.j a  va  2  s.c  o  m*/
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

package net.sourceforge.javaFlacEncoder;

import java.util.concurrent.LinkedBlockingQueue;

/**
 * The purpose of this class is to provide a source for reusable int arrays.
 * When using large numbers of arrays in succession, it is inefficient to
 * constantly go in an allocate/free loop. This way, we may pass a single,
 * thread-safe recycler to all objects. No matter where the arrays end their
 * life, we can then add it to the same resource store.
 *
 * @author Preston Lacey
 */
public class ArrayRecycler {
  LinkedBlockingQueue<int[]> usedIntArrays = null;

  ArrayRecycler() {
    usedIntArrays = new LinkedBlockingQueue<int[]>();
  }

  public void add(int[] array) {
    usedIntArrays.add(array);
  }

  /**
   *
   * @param size
   * @return
   */
  public int[] getArray(int size) {
    int[] result = usedIntArrays.poll();
    if(result == null) {
      result = new int[size];
    }
    else if(result.length < size) {
      usedIntArrays.offer(result);
      result = new int[size];
    }
    return result;
  }
}

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