}

  @Override
  public final void addTearDown(TearDown tearDown) {
    synchronized (lock) {
      stack.addFirst(checkNotNull(tearDown));
    }
  }

  /** Causes teardown to execute. */
  public final void runTearDown() {
    List<Throwable> exceptions = new ArrayList<>();
    List<TearDown> stackCopy;
    synchronized (lock) {
      stackCopy = new ArrayList<>(stack);
      stack.clear();
    }

    }

    synchronized SmbTransport transport() {
        if (transport == null) {
            transport = SmbTransport.getSmbTransport(address, port, localAddr, localPort, null);
        }
        return transport;
    }

    void send(final ServerMessageBlock request, final ServerMessageBlock response) throws SmbException {
        synchronized (transport()) {
            if (response != null) {

     *
     * @return the tree handle implementation
     * @throws CIFSException if a connection error occurs
     */
    protected synchronized SmbTreeHandleImpl ensureTreeConnected() throws CIFSException {
        return this.handle.ensureTreeConnected();
    }

    @Override
    protected synchronized SmbFileHandleImpl ensureOpen() throws CIFSException {
        return this.handle.ensureOpen();
    }

    /**

            this.cache = new ArrayList<>(maxBuffers);
        }

        @Override
        public synchronized byte[] getBuffer() {
            if (!cache.isEmpty()) {
                return cache.remove(0);
            }
            return new byte[bufferSize];
        }

        @Override
        public synchronized void releaseBuffer(byte[] buf) {
            if (buf != null && cache.size() < maxBuffers) {

     *
     * @param text the text containing URLs
     * @return the text with replaced URLs
     */
    public String replaceUrls(final String text) {
        if (cachedPathMappingList == null) {
            synchronized (this) {
                if (cachedPathMappingList == null) {
                    init();
                }
            }
        }
        String result = text;

        int max = NbtAddress.NBNS.length;

        if (max == 0) {
            max = 1; /* No WINs, try only bcast addr */
        }

        synchronized (response) {
            while (max-- > 0) {
                try {
                    synchronized (LOCK) {
                        request.nameTrnId = getNextNameTrnId();
                        nid = request.nameTrnId;

            bus.handleSubscriberException(e.getCause(), context(event));
          }
        });
  }

  /**
   * Invokes the subscriber method. This method can be overridden to make the invocation
   * synchronized.
   */
  @VisibleForTesting
  void invokeSubscriberMethod(Object event) throws InvocationTargetException {
    try {
      method.invoke(target, checkNotNull(event));
    } catch (IllegalArgumentException e) {

     *
     * @param factory The URL stream handler factory.
     */
    public static void setURLStreamHandlerFactory(final URLStreamHandlerFactory factory) {
        synchronized (PROTOCOL_HANDLERS) {
            if (Handler.factory != null) {
                throw new IllegalStateException("URLStreamHandlerFactory already set.");
            }
            PROTOCOL_HANDLERS.clear();

     *
     * @see jcifs.DfsResolver#isTrustedDomain(jcifs.CIFSContext, java.lang.String)
     */
    @Override
    public boolean isTrustedDomain(final CIFSContext tf, String domain) throws SmbAuthException {
        synchronized (this.domainsLock) {
            final Map<String, Map<String, CacheEntry<DfsReferralDataInternal>>> domains = getTrustedDomains(tf);
            if (domains == null) {
                return false;
            }

            return hashAlgorithm;
        }

        public byte[] getCurrentHash() {
            synchronized (hashLock) {
                return currentHash.clone();
            }
        }

        public void updateHash(byte[] newHash) {
            synchronized (hashLock) {
                if (newHash != null && newHash.length == currentHash.length) {