supplier =
          new Supplier<LongAddable>() {
            @Override
            public LongAddable get() {
              return new LongAdder();
            }
          };
    } catch (Throwable t) { // we really want to catch *everything*
      supplier =
          new Supplier<LongAddable>() {
            @Override
            public LongAddable get() {
              return new PureJavaLongAddable();

/**
 * Source of {@link LongAddable} objects that deals with GWT and all that.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
final class LongAddables {
  public static LongAddable create() {
    return new JavaUtilConcurrentLongAdder();
  }

  private static final class JavaUtilConcurrentLongAdder extends LongAdder implements LongAddable {}

  private LongAddables() {}

 * <p>jsr166e note: This class is targeted to be placed in java.util.concurrent.atomic.
 *
 * @since 1.8
 * @author Doug Lea
 */
@GwtCompatible
final class LongAdder extends Striped64 implements Serializable, LongAddable {
  @GwtIncompatible @J2ktIncompatible   private static final long serialVersionUID = 7249069246863182397L;

  /** Version of plus for use in retryUpdate */
  @Override
  final long fn(long v, long x) {