leakcanary-watcher/src/main/java/com/squareup/leakcanary/KeyedWeakReference.java

/*
 * Copyright (C) 2015 Square, Inc.
 *
 * 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.squareup.leakcanary;

import java.lang.ref.ReferenceQueue;
import java.lang.ref.WeakReference;

import static com.squareup.leakcanary.Preconditions.checkNotNull;

final class KeyedWeakReference extends WeakReference<Object> {
  /**
   * Key used to find the retained references in the heap dump.
   */
  public final String key;
  public final String name;
  public final long watchUptimeMillis;

  KeyedWeakReference(Object referent, String key, String name, long watchUptimeMillis,
      ReferenceQueue<Object> referenceQueue) {
    super(checkNotNull(referent, "referent"), checkNotNull(referenceQueue, "referenceQueue"));
    this.key = checkNotNull(key, "key");
    this.name = checkNotNull(name, "name");
    this.watchUptimeMillis = watchUptimeMillis;
  }
}