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package org.holoeverywhere.util;
import android.util.Log;
public class FinitePool<T extends Poolable<T>> implements Pool<T> {
private static final String TAG = "FinitePool";
private final boolean mInfinite;
private final int mLimit;
private final PoolableManager<T> mManager;
private int mPoolCount;
private T mRoot;
public FinitePool(PoolableManager<T> manager) {
mManager = manager;
mLimit = 0;
mInfinite = true;
}
public FinitePool(PoolableManager<T> manager, int limit) {
if (limit <= 0) {
throw new IllegalArgumentException("The pool limit must be > 0");
}
mManager = manager;
mLimit = limit;
mInfinite = false;
}
@Override
public T acquire() {
T element;
if (mRoot != null) {
element = mRoot;
mRoot = element.getNextPoolable();
mPoolCount--;
} else {
element = mManager.newInstance();
}
if (element != null) {
element.setNextPoolable(null);
element.setPooled(false);
mManager.onAcquired(element);
}
return element;
}
@Override
public void release(T element) {
if (!element.isPooled()) {
if (mInfinite || mPoolCount < mLimit) {
mPoolCount++;
element.setNextPoolable(mRoot);
element.setPooled(true);
mRoot = element;
}
mManager.onReleased(element);
} else {
Log.w(FinitePool.TAG, "Element is already in pool: " + element);
}
}
}
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