text: /** Copyright 2020 Alibaba Group Holding Limited.
  
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at
  
      http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  */
  
  #ifndef EXAMPLES_ANALYTICAL_APPS_CDLP_CDLP_CONTEXT_H_
  #define EXAMPLES_ANALYTICAL_APPS_CDLP_CDLP_CONTEXT_H_
  
  #include <vector>
  
  #include <grape/grape.h>
  
  namespace grape {
  /**
   * @brief Context for the parallel version of CDLP.
   *
   * @tparam FRAG_T
   */
  template <typename FRAG_T>
  class CDLPContext : public VertexDataContext<FRAG_T, typename FRAG_T::oid_t> {
   public:
    using oid_t = typename FRAG_T::oid_t;
    using vid_t = typename FRAG_T::vid_t;
  
  #ifdef GID_AS_LABEL
    using label_t = vid_t;
  #else
    using label_t = oid_t;
  #endif
    explicit CDLPContext(const FRAG_T& fragment)
        : VertexDataContext<FRAG_T, typename FRAG_T::oid_t>(fragment, true),
          labels(this->data()) {}
  
    void Init(ParallelMessageManager& messages, int max_round) {
      auto& frag = this->fragment();
      auto inner_vertices = frag.InnerVertices();
  
      this->max_round = max_round;
      changed.Init(inner_vertices);
  
  #ifdef PROFILING
      preprocess_time = 0;
      exec_time = 0;
      postprocess_time = 0;
  #endif
      step = 0;
    }
  
    void Output(std::ostream& os) override {
      auto& frag = this->fragment();
      auto inner_vertices = frag.InnerVertices();
  
      for (auto v : inner_vertices) {
        os << frag.GetId(v) << " " << labels[v] << std::endl;
      }
    }
  
    typename FRAG_T::template vertex_array_t<label_t>& labels;
    typename FRAG_T::template vertex_array_t<bool> changed;
  
  #ifdef PROFILING
    double preprocess_time = 0;
    double exec_time = 0;
    double postprocess_time = 0;
  #endif
  
    int step = 0;
    int max_round = 0;
    int max_deg = 0;
    label_t** local_labelss;
  
  #ifdef RANDOM_LABEL
    std::vector<std::mt19937> random_engines;
  #endif
  };
  }  // namespace grape
  
  #endif  // EXAMPLES_ANALYTICAL_APPS_CDLP_CDLP_CONTEXT_H_
  