tokens = b
		}
	} else { // all tokens go towards payload
		need = int(math.Min(float64(b), float64(need)))
		tokens = need
	}
	// reduce tokens requested according to availability
	av := int(r.throttle.Tokens())
	if av < tokens && av > 0 {
		tokens = av
		need = int(math.Min(float64(tokens), float64(need)))
	}
	err = r.throttle.WaitN(r.ctx, tokens)
	if err != nil {
		return
	}

    private final int bufferSize;
    private int freeBuffers = 0;


    /**
     * 
     * @param cfg
     */
    public BufferCacheImpl ( Configuration cfg ) {
        this(cfg.getBufferCacheSize(), cfg.getMaximumBufferSize());
    }


    /**
     * @param maxBuffers
     * @param maxSize
     * 
     */
    public BufferCacheImpl ( int maxBuffers, int maxSize ) {

  @CheckForNull
  Object[] internalArray() {
    return delegateList.internalArray();
  }

  @Override
  int internalArrayStart() {
    return delegateList.internalArrayStart();
  }

  @Override
  int internalArrayEnd() {
    return delegateList.internalArrayEnd();
  }

  @Override
  public E get(int index) {
    return delegateList.get(index);
  }

  // redeclare to help optimizers with b/310253115

     */
    public LruHashMap(final int limitSize) {
        this(limitSize, DEFAULT_INITIAL_CAPACITY, DEFAULT_LOAD_FACTOR);
    }

    /**
     * {@link LruHashMap}を作成します。
     *
     * @param limitSize
     *            エントリ数の上限
     * @param initialCapacity
     *            初期容量
     * @param loadFactor
     *            負荷係数
     */
    public LruHashMap(final int limitSize, final int initialCapacity, final float loadFactor) {

  }

  @SuppressWarnings("deprecation")
  public void testEncodedStringInputs() {
    Random rng = new Random(0);
    for (int z = 0; z < 100; z++) {
      int[] codePoints = new int[rng.nextInt(8)];
      for (int i = 0; i < codePoints.length; i++) {
        do {
          codePoints[i] = rng.nextInt(0x800);
        } while (!Character.isValidCodePoint(codePoints[i])

  private final ByteBuffer buffer;

  /** 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 out
     *            出力ストリーム
     * @return コピーしたバイト数
     */
    protected static int copyInternal(final InputStream in, final OutputStream out) {
        try {
            final byte[] buf = new byte[DEFAULT_BUF_SIZE];
            int len;
            int amount = 0;
            while ((len = in.read(buf)) != -1) {
                out.write(buf, 0, len);
                amount += len;

   * @param escaper the non-null escaper to test
   * @param expected the expected output string
   * @param cp the Unicode code point to escape
   */
  public static void assertEscaping(UnicodeEscaper escaper, String expected, int cp) {

    String escaped = computeReplacement(escaper, cp);
    Assert.assertNotNull(escaped);
    Assert.assertEquals(expected, escaped);
  }

  /**

   * @param escaper the non-null escaper to test
   * @param expected the expected output string
   * @param cp the Unicode code point to escape
   */
  public static void assertEscaping(UnicodeEscaper escaper, String expected, int cp) {

    String escaped = computeReplacement(escaper, cp);
    Assert.assertNotNull(escaped);
    Assert.assertEquals(expected, escaped);
  }

  /**

   *
   * @return the sum
   */
  @Override
  public long longValue() {
    return sum();
  }

  /** Returns the {@link #sum} as an {@code int} after a narrowing primitive conversion. */
  @Override
  public int intValue() {
    return (int) sum();
  }

  /** Returns the {@link #sum} as a {@code float} after a widening primitive conversion. */
  @Override
  public float floatValue() {