/**
     * Ensures that the file handle is open and returns it.
     *
     * @return the open file handle
     * @throws CIFSException if an error occurs opening the file
     */
    protected synchronized SmbFileHandleImpl ensureOpen() throws CIFSException {
        if (!isOpen()) {
            // one extra acquire to keep this open till the stream is released

  private class RecordingPushObserver :
    PushObserver,
    Lockable {
    val events = mutableListOf<Any>()

    @Synchronized fun takeEvent(): Any {
      while (events.isEmpty()) {
        wait()
      }
      return events.removeAt(0)
    }

    @Synchronized override fun onRequest(
      streamId: Int,
      requestHeaders: List<Header>,
    ): Boolean {

			t.Errorf("Unexpected error: %v", dataErrsPerDisk[diskIndex])
		}

		if disk == nil {
			t.Errorf("Drive erroneously filtered, driveIndex: %d", diskIndex)
		}
	}

	// Test 2: Not synchronized modtime
	erasureDisks = s.getDisks()
	partsMetadataBackup := partsMetadata[0]
	partsMetadata[0].ModTime = partsMetadata[0].ModTime.Add(-1 * time.Hour)

	errs = make([]error, len(erasureDisks))

    public org.apache.maven.api.plugin.descriptor.PluginDescriptor getPluginDescriptorV4() {
        if (pluginDescriptorV4 == null) {
            synchronized (this) {
                if (pluginDescriptorV4 == null) {
                    pluginDescriptorV4 = org.apache.maven.api.plugin.descriptor.PluginDescriptor.newBuilder()
                            .namespaceUri(null)

    private final int batchSize = 10;
    private final long batchTimeout = 100;  // 100ms
    
    public void addNotification(WitnessNotification notification) {
        synchronized (pendingNotifications) {
            pendingNotifications.offer(notification);
            
            if (pendingNotifications.size() >= batchSize) {
                processBatch();
            }

        try (SmbFileHandleImpl fh = ensureOpen()) {}
    }

    /**
     * @param file
     * @param openFlags
     * @return
     * @throws SmbException
     */
    synchronized SmbFileHandleImpl ensureOpen() throws CIFSException {
        if (this.handle == null || !this.handle.isValid()) {
            // one extra acquire to keep this open till the stream is released

                        final OpenSearchUrlQueue polled = urlQueueService.poll(sessionId);
                        if (polled != null) {
                            count++;
                            synchronized (allUrls) {
                                allUrls.add(polled.getUrl());
                            }
                        }
                    }
                    totalPolled.addAndGet(count);

        resultData.setTransformerName(getName());

        initBaseDir();

        final String url = responseData.getUrl();
        final String path = getFilePath(url);

        synchronized (this) {

            final File file = createFile(path);

            try (final InputStream is = responseData.getResponseBody(); final OutputStream os = new FileOutputStream(file);) {

     * @throws DcerpcException if the bind operation fails
     * @throws IOException if an I/O error occurs
     */
    public void bind() throws DcerpcException, IOException {
        synchronized (this) {
            try {
                state = 1;
                final DcerpcMessage bind = new DcerpcBind(binding, this);
                sendrecv(bind);
            } catch (final IOException ioe) {

                resp.setContentLength(0);
                resp.flushBuffer();
                return null;
            }
        }

        return ntlm;
    }

    private synchronized NtlmChallenge getChallengeForDomain(final String domain) throws UnknownHostException, ServletException {
        if (domain == null) {
            throw new ServletException("A domain was not specified");
        }