Method ReadAt

cpp/src/arrow/io/interfaces.cc:152–156

RandomAccessFile::RandomAccessFile() : interface_impl_(new Impl()) {}

Result<int64_t> RandomAccessFile::ReadAt(int64_t position, int64_t nbytes, void* out) {
  std::lock_guard<std::mutex> lock(interface_impl_->lock_);
  RETURN_NOT_OK(Seek(position));
  return Read(nbytes, out);
}

Result<std::shared_ptr<Buffer>> RandomAccessFile::ReadAt(int64_t position,
                                                         int64_t nbytes) {