Method GetMapper

cpp/src/arrow/device.cc:314–322

  }

  Result<DeviceMapper> GetMapper(DeviceAllocationType device_type) {
    std::lock_guard<std::mutex> lock(lock_);
    auto it = registry_.find(device_type);
    if (it == registry_.end()) {
      return Status::KeyError("Device type ", static_cast<int>(device_type),
                              "is not registered");
    }
    return it->second;
  }

 private:
  std::mutex lock_;