static final class WeakKeyWeakValueSegment<K, V>
      extends Segment<K, V, WeakKeyWeakValueEntry<K, V>, WeakKeyWeakValueSegment<K, V>> {
    private final ReferenceQueue<K> queueForKeys = new ReferenceQueue<>();
    private final ReferenceQueue<V> queueForValues = new ReferenceQueue<>();

    WeakKeyWeakValueSegment(
        MapMakerInternalMap<K, V, WeakKeyWeakValueEntry<K, V>, WeakKeyWeakValueSegment<K, V>> map,

    final AtomicReferenceArray<@Nullable ArrayReference<? extends L>> locks;
    final Supplier<L> supplier;
    final int size;
    final ReferenceQueue<L> queue = new ReferenceQueue<>();

    SmallLazyStriped(int stripes, Supplier<L> supplier) {
      super(stripes);
      this.size = (mask == ALL_SET) ? Integer.MAX_VALUE : mask + 1;

import com.google.common.util.concurrent.SettableFuture;
import com.google.common.util.concurrent.UncheckedExecutionException;
import java.io.Serializable;
import java.lang.ref.Reference;
import java.lang.ref.ReferenceQueue;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;