54 import java.util.concurrent.LinkedTransferQueue;

    54 import java.util.concurrent.LinkedTransferQueue;

    55 import java.util.concurrent.ThreadLocalRandom;

    55 import java.util.concurrent.ThreadLocalRandom;

    56 import java.util.concurrent.TimeUnit;

    56 import java.util.concurrent.TimeUnit;

    57 import static java.util.stream.Collectors.toList;

    57 import static java.util.stream.Collectors.toList;

    58 import java.util.function.Consumer;

    58 import java.util.function.Consumer;

    60 

    59 

    61 @Test

    60 @Test

    62 public class WhiteBox {

    61 public class WhiteBox {

    63     final ThreadLocalRandom rnd = ThreadLocalRandom.current();

    62     final ThreadLocalRandom rnd = ThreadLocalRandom.current();

    64     final VarHandle HEAD, TAIL, ITEM, NEXT;

    63     final VarHandle HEAD, TAIL, ITEM, NEXT;