}

  /**
   * Add a shutdown hook to wait for thread completion in the given {@link ExecutorService service}.
   * This is useful if the given service uses daemon threads, and we want to keep the JVM from
   * exiting immediately on shutdown, instead giving these daemon threads a chance to terminate
   * normally.
   *
   * @param service ExecutorService which uses daemon threads

  public ServiceManager startAsync() {
    for (Service service : services) {
      checkState(service.state() == NEW, "Not all services are NEW, cannot start %s", this);
    }
    for (Service service : services) {
      try {
        state.tryStartTiming(service);
        service.startAsync();
      } catch (IllegalStateException e) {
        // This can happen if the service has already been started or stopped (e.g. by another

   * that sets the name of the thread to the {@linkplain #serviceName() service name}. Also, the
   * pool will be {@linkplain ScheduledExecutorService#shutdown() shut down} when the service
   * {@linkplain Service.State#TERMINATED terminates} or {@linkplain Service.State#TERMINATED
   * fails}.
   */
  protected ScheduledExecutorService executor() {
    @WeakOuter

/**
 * Static utility methods pertaining to {@link InetAddress} instances.
 *
 * <p><b>Important note:</b> Unlike {@code InetAddress.getByName()}, the methods of this class never
 * cause DNS services to be accessed. For this reason, you should prefer these methods as much as
 * possible over their JDK equivalents whenever you are expecting to handle only IP address string

@J2ktIncompatible
@ElementTypesAreNonnullByDefault
public abstract class AbstractExecutionThreadService implements Service {
  private static final LazyLogger logger = new LazyLogger(AbstractExecutionThreadService.class);

  /* use AbstractService for state management */
  private final Service delegate =
      new AbstractService() {
        @Override
        protected final void doStart() {

   * <p>The delegate future is interrupted and cancelled if it times out.
   *
   * @param delegate The future to delegate to.
   * @param unit the time unit of the time parameter
   * @param scheduledExecutor The executor service to enforce the timeout.
   * @since 19.0
   */
  @J2ktIncompatible
  @GwtIncompatible // java.util.concurrent.ScheduledExecutorService
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration

    final LongHolder holder = new LongHolder();
    final ArrayList<ListenableFuture<Integer>> lengthChecks = new ArrayList<>();
    final List<Integer> completeLengthChecks;
    final int baseStackDepth;
    ExecutorService service = Executors.newFixedThreadPool(5);
    try {
      // Avoid counting frames from the executor itself, or the ExecutionSequencer
      baseStackDepth =
          serializer
              .submit(

    final LongHolder holder = new LongHolder();
    final ArrayList<ListenableFuture<Integer>> lengthChecks = new ArrayList<>();
    final List<Integer> completeLengthChecks;
    final int baseStackDepth;
    ExecutorService service = Executors.newFixedThreadPool(5);
    try {
      // Avoid counting frames from the executor itself, or the ExecutionSequencer
      baseStackDepth =
          serializer
              .submit(

    public static final String UNSAFE_URL = "unsafe-url";
  }

  /**
   * The HTTP <a href="https://www.w3.org/TR/service-workers/#update-algorithm">{@code
   * Service-Worker}</a> header field name.
   *
   * @since 20.0
   */
  public static final String SERVICE_WORKER = "Service-Worker";
  /** The HTTP {@code TE} header field name. */
  public static final String TE = "TE";