Method ChildSnapshot

tensorflow/core/framework/hash_table/hash_table.cc:604–618

TODO(chihan.hs): extract all children in one traverse

// TODO(chihan.hs): extract all children in one traverse
Status CoalescedHashTable::ChildSnapshot(
    const string& name, std::vector<std::pair<int64, int64>>* output) {
  mutex_lock lock(update_mu_);
  int64 size = size_;
  string child_name = ChildName(name);
  int64 index = index_map_[child_name];
  for (int64 i = 0; i < num_tables_; ++i) {
    for (auto iter = tables_[i].begin(); iter != tables_[i].end(); ++iter) {
      if (iter->second < size && Match(iter->first, index)) {
        output->emplace_back(Decode(iter->first), iter->second);
      }
    }
  }
  return Status::OK();
}

std::function<void(int64*,size_t)> CoalescedHashTable::MakeReviserFn(
    const string& name) {