private void cleanBufferPool(){
  ByteBuffer buf;
  while ((buf=bufferPool.poll()) != null) {
    CryptoInputStream.freeDirectBuffer(buf);
  }
}

private void cleanBufferPool ( ) { ByteBuffer buf ; while ( ( buf = bufferPool . poll ( ) ) != null ) { CryptoInputStream . freeDirectBuffer ( buf ) ; } }
clean direct buffer pool
