/*
 * Copyright (C) 2007 The Guava Authors
 *
 * 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.google.common.base;

import com.google.common.annotations.GwtIncompatible;
import java.lang.ref.ReferenceQueue;
import java.lang.ref.WeakReference;

Weak reference with a finalizeReferent() method which a background thread invokes after the garbage collector reclaims the referent. This is a simpler alternative to using a ReferenceQueue.
Author:Bob Lee
Since:2.0
/** * Weak reference with a {@code finalizeReferent()} method which a background thread invokes after * the garbage collector reclaims the referent. This is a simpler alternative to using a {@link * ReferenceQueue}. * * @author Bob Lee * @since 2.0 */
@GwtIncompatible public abstract class FinalizableWeakReference<T> extends WeakReference<T> implements FinalizableReference {
Constructs a new finalizable weak reference.
Params:
  • referent – to weakly reference
  • queue – that should finalize the referent
/** * Constructs a new finalizable weak reference. * * @param referent to weakly reference * @param queue that should finalize the referent */
protected FinalizableWeakReference(T referent, FinalizableReferenceQueue queue) { super(referent, queue.queue); queue.cleanUp(); } }