protected HashCode makeHash() {
      // End with a byte encoding the positive integer b mod 256.
      finalM ^= b << 56;
      processM(finalM);

      // Finalization
      v2 ^= 0xFFL;
      sipRound(d);
      return HashCode.fromLong(v0 ^ v1 ^ v2 ^ v3);
    }

    private void processM(long m) {
      v3 ^= m;
      sipRound(c);
      v0 ^= m;
    }

    private void sipRound(int iterations) {

process-ram.drawio.svg...

    }

    /**
     * Processes a document map for datastore operations.
     * Default implementation delegates to the basic process method.
     *
     * @param target the document data to process
     * @param params the data store parameters
     * @return the processed document data
     */
    public Map<String, Object> process(final Map<String, Object> target, final DataStoreParams params) {

	processIOReadBytesMD              = NewCounterMD(processIOReadBytes, "Total bytes read by the process from the underlying storage system, /proc/[pid]/io read_bytes")

    /**
     * Set of fully qualified class names that have been processed and contain the {@link Named} annotation.
     */
    private final Set<String> processedClasses = new HashSet<>();

    /**
     * Processes classes with the {@link Named} annotation and generates an index file.
     *
     * @param annotations the annotation types requested to be processed

Isso ainda é verdade.

Então, para poder ter **vários processos** ao mesmo tempo, tem que haver um **único processo escutando em uma porta** que então transmite a comunicação para cada processo de trabalho de alguma forma.

### Memória por Processo { #memory-per-process }

        try {
            Process process = new ProcessBuilder().command(args).start();
            CountDownLatch latch = new CountDownLatch(2);
            ByteArrayOutputStream stdout = connectStream(process.getInputStream(), latch);
            ByteArrayOutputStream stderr = connectStream(process.getErrorStream(), latch);

            process.waitFor(1, TimeUnit.MINUTES);

        Process mockProcess = createMockProcess("test");
        JobProcess jobProcess = new JobProcess(mockProcess);

        assertNotNull(jobProcess.getInputStreamThread());
    }

    @Test
    public void test_multipleJobProcesses() throws IOException {
        Process mockProcess1 = createMockProcess("process1 output");
        Process mockProcess2 = createMockProcess("process2 output");

  /** Number of bytes to be filled before process() invocation(s). */
  private final int bufferSize;

  /** Number of bytes processed per process() invocation. */
  private final int chunkSize;

  /**
   * Constructor for use by subclasses. This hasher instance will process chunks of the specified
   * size.
   *
   * @param chunkSize the number of bytes available per {@link #process(ByteBuffer)} invocation;
   *     must be at least 4

        } catch (final IOException e) {
            throw new JobProcessingException("Crawler Process terminated.", e);
        }
    }

    /**
     * Destroys the process associated with the given session ID.
     *
     * @param sessionId unique identifier for the process session
     * @return exit code of the destroyed process, or -1 if the process was not found
     */