Method CopyNonOwnedFrom

cpp/src/arrow/c/bridge_test.cc:1396–1407

    return CopyNonOwnedFrom(*buf, from);
  }
  Result<std::unique_ptr<Buffer>> CopyNonOwnedFrom(
      const Buffer& buf, const std::shared_ptr<MemoryManager>& from) override {
    if (!from->is_cpu()) {
      return nullptr;
    }

    ARROW_ASSIGN_OR_RAISE(auto dest, AllocateBuffer(buf.size()));
    if (buf.size() > 0) {
      memcpy(dest->mutable_data(), buf.data(), static_cast<size_t>(buf.size()));
    }
    return dest;
  }
};

std::shared_ptr<MemoryManager> MyDevice::default_memory_manager() {