text: //*****************************************************************************
  // Copyright 2017-2018 Intel Corporation
  //
  // 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.
  //*****************************************************************************
  
  #pragma once
  
  #include <chrono>
  #include <cstdint>
  #include <set>
  
  #define TBB_PREVIEW_GLOBAL_CONTROL 1
  #define TBB_PREVIEW_FLOW_GRAPH_TRACE 1
  #include <tbb/flow_graph.h>
  #include <tbb/global_control.h>
  #include <tbb/task_scheduler_init.h>
  
  namespace mkldnn
  {
      class primitive;
  }
  
  namespace ngraph
  {
      namespace runtime
      {
          class AlignedBuffer;
      }
  
      class State;
  }
  
  namespace ngraph
  {
      namespace runtime
      {
          namespace cpu
          {
              typedef std::chrono::high_resolution_clock Clock;
              typedef std::chrono::time_point<Clock> Timestamp;
              typedef std::chrono::microseconds Timescale;
  
              extern "C" {
              struct CPURuntimeContext
              {
                  int64_t* op_durations;
                  bool* p_en;
                  bool first_iteration;
                  mkldnn::primitive* const* mkldnn_primitives;
                  std::vector<AlignedBuffer*> memory_buffers;
                  char* const* mkldnn_workspaces;
                  tbb::flow::graph* G;
                  tbb::global_control* c;
                  State* const* states;
                  std::set<size_t> breakpoints;
                  size_t pc;
              };
              }
  
              struct CPUExecutionContext
              {
                  int arena;
              };
  
              typedef std::function<void(CPURuntimeContext*, CPUExecutionContext*)> CPUKernelFunctor;
          }
      }
  }
  