// http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/main/java/util/concurrent/

  private static final long serialVersionUID = 5595510919245408276L;

  final PriorityQueue<E> q;
  final Monitor monitor = new Monitor(true);
  private final Monitor.Guard notEmpty =
      new Monitor.Guard(monitor) {
        @Override
        public boolean isSatisfied() {
          return !q.isEmpty();

 */
@Immutable
@ElementTypesAreNonnullByDefault
final class SipHashFunction extends AbstractHashFunction implements Serializable {
  static final HashFunction SIP_HASH_24 =
      new SipHashFunction(2, 4, 0x0706050403020100L, 0x0f0e0d0c0b0a0908L);

  // The number of compression rounds.
  private final int c;
  // The number of finalization rounds.
  private final int d;
  // Two 64-bit keys (represent a single 128-bit key).

      @Override
      public void tearDown() throws IOException {
        factory.tearDown();
      }
    };
  }

  public static ByteSourceFactory asSlicedByteSourceFactory(
      final ByteSourceFactory factory, final long off, final long len) {
    checkNotNull(factory);
    return new ByteSourceFactory() {
      @Override
      public ByteSource createSource(byte[] bytes) throws IOException {

    private final List<Suppression> suppressions = Lists.newArrayList();

    @Override
    public void suppress(Closeable closeable, Throwable thrown, Throwable suppressed) {
      suppressions.add(new Suppression(closeable, thrown, suppressed));
    }
  }

  /** Record of a call to suppress. */
  private static class Suppression {
    private final Closeable closeable;

  }

  public void testDirectExecutorServiceServiceTermination() throws Exception {
    final ExecutorService executor = newDirectExecutorService();
    final CyclicBarrier barrier = new CyclicBarrier(2);
    final AtomicReference<Throwable> throwableFromOtherThread = new AtomicReference<>(null);
    final Runnable doNothingRunnable =
        new Runnable() {
          @Override
          public void run() {}

    TestSuite stringSuite = new TestSuite(name + " [" + desc + "]");
    for (final Method method : testMethods) {
      stringSuite.addTest(new CharSinkTester(factory, string, name, desc, method));
    }
    return stringSuite;
  }

  private final ImmutableList<String> lines;
  private final ImmutableList<String> expectedLines;

  private CharSink sink;

  public CharSinkTester(

 */
public abstract class IoTestCase extends TestCase {

  private static final Logger logger = Logger.getLogger(IoTestCase.class.getName());

  static final String I18N =
      "\u00CE\u00F1\u0163\u00E9\u0072\u00F1\u00E5\u0163\u00EE\u00F6"
          + "\u00F1\u00E5\u013C\u00EE\u017E\u00E5\u0163\u00EE\u00F6\u00F1";

  static final String ASCII =
      " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ"

    try {
      runTestMethod(NO_UNSAFE);
    } finally {
      Thread.currentThread().setContextClassLoader(oldClassLoader);
    }

    Thread.currentThread().setContextClassLoader(NO_ATOMIC_REFERENCE_FIELD_UPDATER);
    try {
      runTestMethod(NO_ATOMIC_REFERENCE_FIELD_UPDATER);
      // TODO(lukes): assert that the logs are full of errors
    } finally {
      Thread.currentThread().setContextClassLoader(oldClassLoader);

 *
 * @author Kevin Bourrillion
 * @author Chris Povirk
 */
final class InterruptionUtil {
  private static final Logger logger = Logger.getLogger(InterruptionUtil.class.getName());

  /** Runnable which will interrupt the target thread repeatedly when run. */
  private static final class Interruptenator implements Runnable {
    private final long everyMillis;
    private final Thread interruptee;
    private volatile boolean shouldStop = false;

              return null;
            }
          };
      Callables.threadRenaming(callable, newName).call();
      assertEquals(oldName, Thread.currentThread().getName());
    } finally {
      System.setSecurityManager(null);
    }
  }