Method DoReadAt

cpp/src/arrow/gpu/cuda_memory.cc:262–269

}

Result<int64_t> CudaBufferReader::DoReadAt(int64_t position, int64_t nbytes,
                                           void* buffer) {
  RETURN_NOT_OK(CheckClosed());

  nbytes = std::min(nbytes, size_ - position);
  RETURN_NOT_OK(context_->CopyDeviceToHost(buffer, address_ + position, nbytes));
  return nbytes;
}

Result<int64_t> CudaBufferReader::DoRead(int64_t nbytes, void* buffer) {
  RETURN_NOT_OK(CheckClosed());