Function NodeDefHash

tensorflow/core/util/equal_graph_def.cc:236–275

}

uint64 NodeDefHash(const NodeDef& ndef, const EqualGraphDefOptions& options) {
  uint64 h = Hash64(ndef.name());
  h = Hash64(ndef.op().data(), ndef.op().size(), h);
  h = Hash64(ndef.device().data(), ndef.device().size(), h);

  // Normal inputs. Order important.
  int first_control_input = ndef.input_size();
  for (int i = 0; i < ndef.input_size(); ++i) {
    if (absl::StartsWith(ndef.input(i), "^")) {
      first_control_input = i;
      break;
    }
    h = Hash64(ndef.input(i).data(), ndef.input(i).size(), h);
  }

  // Control inputs. Order irrelevant.
  std::set<string> ndef_control;
  for (int i = first_control_input; i < ndef.input_size(); ++i) {
    ndef_control.insert(ndef.input(i));
  }
  for (const string& s : ndef_control) {
    h = Hash64(s.data(), s.size(), h);
  }

  // Attributes
  std::map<string, AttrValue> ndef_attr;
  for (const auto& a : ndef.attr()) {
    if (options.ignore_internal_attrs && !a.first.empty() &&
        a.first[0] == '_') {
      continue;
    }
    ndef_attr[a.first] = a.second;
  }
  for (const auto& a : ndef_attr) {
    h = Hash64(a.first.data(), a.first.size(), h);
    h = Hash64Combine(AttrValueHash(a.second), h);
  }

  return h;
}

}  // namespace tensorflow