class OffHeapByteBufferStore implements OffHeapStore {

  public long usedMemory() {
    long usedMemory = 0;
    for (int i = 0; i < bufferSize; i++) {
      usedMemory += buffers[i].usedMemory();
    }
    return usedMemory;
  }

  public  OffHeapByteBufferStore(int capacity, int bufferSize);
  public  OffHeapByteBufferStore(int capacity, int bufferSize, int concurrencyLevel);

}