Method DoTell

cpp/src/arrow/gpu/cuda_memory.cc:241–244

bool CudaBufferReader::supports_zero_copy() const { return true; }

Result<int64_t> CudaBufferReader::DoTell() const {
  RETURN_NOT_OK(CheckClosed());
  return position_;
}

Result<int64_t> CudaBufferReader::DoGetSize() {
  RETURN_NOT_OK(CheckClosed());