Examples of java.nio.ByteBuffer.mark()

java.nio.ByteBuffer.mark()

        // this involves seeking backwards in the file, which might not
        // perform well, but that's OK since we only do this once per file
        ByteBuffer graph = access.read(pos - bytes, bytes);


        byte[] b = new byte[bytes - 16];
        graph.mark();
        graph.get(b);
        graph.reset();


        CRC32 checksum = new CRC32();
        checksum.update(b);

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   */
  @Override
  public ByteBuffer decodeKeyValues(DataInputStream source, int allocateHeaderLength,
      int skipLastBytes, boolean includesMvccVersion) throws IOException {
    ByteBuffer sourceAsBuffer = ByteBufferUtils.drainInputStreamToBuffer(source);// waste
    sourceAsBuffer.mark();
    PrefixTreeBlockMeta blockMeta = new PrefixTreeBlockMeta(sourceAsBuffer);
    sourceAsBuffer.rewind();
    int numV1BytesWithHeader = allocateHeaderLength + blockMeta.getNumKeyValueBytes();
    byte[] keyValueBytesWithHeader = new byte[numV1BytesWithHeader];
    ByteBuffer result = ByteBuffer.wrap(keyValueBytesWithHeader);

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   */
  @Override
  public ByteBuffer decodeKeyValues(DataInputStream source, int allocateHeaderLength,
      int skipLastBytes, boolean includesMvccVersion) throws IOException {
    ByteBuffer sourceAsBuffer = ByteBufferUtils.drainInputStreamToBuffer(source);// waste
    sourceAsBuffer.mark();
    PrefixTreeBlockMeta blockMeta = new PrefixTreeBlockMeta(sourceAsBuffer);
    sourceAsBuffer.rewind();
    int numV1BytesWithHeader = allocateHeaderLength + blockMeta.getNumKeyValueBytes();
    byte[] keyValueBytesWithHeader = new byte[numV1BytesWithHeader];
    ByteBuffer result = ByteBuffer.wrap(keyValueBytesWithHeader);

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   */
  @Override
  public ByteBuffer decodeKeyValues(DataInputStream source, int allocateHeaderLength,
      int skipLastBytes, boolean includesMvccVersion) throws IOException {
    ByteBuffer sourceAsBuffer = ByteBufferUtils.drainInputStreamToBuffer(source);// waste
    sourceAsBuffer.mark();
    PrefixTreeBlockMeta blockMeta = new PrefixTreeBlockMeta(sourceAsBuffer);
    sourceAsBuffer.rewind();
    int numV1BytesWithHeader = allocateHeaderLength + blockMeta.getNumKeyValueBytes();
    byte[] keyValueBytesWithHeader = new byte[numV1BytesWithHeader];
    ByteBuffer result = ByteBuffer.wrap(keyValueBytesWithHeader);

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      src.position(start);
          
      while (src.hasRemaining()) {
        if (b == src.get()) { // matching first byte
          src.mark(); // save position in loop
          tgt.mark(); // save position in target
          boolean found = true;
          int pos = src.position()-1;
          while (tgt.hasRemaining()) {
            if (!src.hasRemaining()) { // src expired first
              tgt.reset();

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   */
  public static String decodeNoFallback(final Charset cs,
      final byte[] buffer, final int start, final int end)
      throws CharacterCodingException {
    final ByteBuffer b = ByteBuffer.wrap(buffer, start, end - start);
    b.mark();


    // Try our built-in favorite. The assumption here is that
    // decoding will fail if the data is not actually encoded
    // using that encoder.
    //

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    src.position(start);


    while (src.hasRemaining()) {
      if (b == src.get()) { // matching first byte
        src.mark(); // save position in loop
        tgt.mark(); // save position in target
        boolean found = true;
        int pos = src.position()-1;
        while (tgt.hasRemaining()) {
          if (!src.hasRemaining()) { // src expired first
            tgt.reset();

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     * {@inheritDoc}
     */
    @Override
    public final IoBuffer mark() {
        ByteBuffer byteBuffer = buf();
        byteBuffer.mark();
        mark = byteBuffer.position();


        return this;
    }

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    doReturn(1).when(outputContext).getTaskIndex();
    doReturn(1).when(outputContext).getTaskVertexIndex();
    doReturn("vertexName").when(outputContext).getTaskVertexName();
    doReturn(uniqueId).when(outputContext).getUniqueIdentifier();
    ByteBuffer portBuffer = ByteBuffer.allocate(4);
    portBuffer.mark();
    portBuffer.putInt(SHUFFLE_PORT);
    portBuffer.reset();
    doReturn(portBuffer).when(outputContext).getServiceProviderMetaData(
        eq(ShuffleUtils.SHUFFLE_HANDLER_SERVICE_ID));
    Path outDirBase = new Path(TEST_ROOT_DIR, "outDir_" + uniqueId);

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                // first set the offset, which is the number of bytes from the
                // current position to the current offset
                buf.putShort((short) (glyphArrayOffset - buf.position()));
                
                // remember the current position
                buf.mark();
                
                // move the position to the offset
                buf.position(glyphArrayOffset);
                
                // now write the map

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