Function AddReadControl

tensorflow/core/graph/graph_partition.cc:160–167

Add a control edge from each input to each recv.

// Add a control edge from each input to each recv.
void AddReadControl(const std::vector<NodeDef*>& recvs,
                    const std::vector<string>& inputs) {
  for (NodeDef* recv : recvs) {
    for (const string& input : inputs) {
      recv->add_input(strings::StrCat("^", input));
    }
  }
}

void SetSendRecvAttrs(const PartitionOptions& opts, const Edge* edge,
                      NodeDefBuilder* builder) {