A light pool of objects that can be resused to avoid allocation. : Location « Hardware « Android

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A light pool of objects that can be resused to avoid allocation.

 



import java.util.ArrayList;

/**
 * A light pool of objects that can be resused to avoid allocation.
 * Based on Nathan Sweet pool implementation
 */
 abstract class Pool<T> {
  private final ArrayList<T> objects;

  public Pool (int initCapacity) {
    objects = new ArrayList<T>(initCapacity);
  }

  protected abstract T getNew();

  public T get() {
    return objects.isEmpty() ? getNew() : objects.remove(objects.size()-1);
  }

  public void free(T obj) {
    if (!objects.contains(obj))
      objects.add(obj);
  }

  public void clear() {
    objects.clear();
  }

  public int size() {
    return objects.size();
  }
}

   
  

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