text: /////////////////////////////////////////////////////////////////////////////
  //
  // BSD 3-Clause License
  //
  // Copyright (c) 2019, University of California, San Diego.
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are met:
  //
  // * Redistributions of source code must retain the above copyright notice, this
  //   list of conditions and the following disclaimer.
  //
  // * Redistributions in binary form must reproduce the above copyright notice,
  //   this list of conditions and the following disclaimer in the documentation
  //   and/or other materials provided with the distribution.
  //
  // * Neither the name of the copyright holder nor the names of its
  //   contributors may be used to endorse or promote products derived from
  //   this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  // POSSIBILITY OF SUCH DAMAGE.
  //
  ///////////////////////////////////////////////////////////////////////////////
  
  #pragma once
  
  #include "Clock.h"
  #include "CtsOptions.h"
  
  #include <unordered_map>
  
  namespace utl {
  class Logger;
  } // namespace utl
  
  namespace cts {
  
  using utl::Logger;
  
  class PostCtsOpt
  {
   public:
    PostCtsOpt(Clock& clock, CtsOptions* options, Logger* logger)
        : _clock(&clock), _options(options), _logger(logger)
    {
      _bufDistRatio = _options->getBufDistRatio();
    }
  
    void run();
  
   protected:
    void initSourceSinkDists();
    void computeNetSourceSinkDists(const Clock::SubNet& subNet);
    void fixSourceSinkDists();
    void fixNetSourceSinkDists(Clock::SubNet& subNet);
    void createSubClockNet(Clock::SubNet& net,
                           ClockInst* driver,
                           ClockInst* sink);
    Point<DBU> computeBufferLocation(ClockInst* driver, ClockInst* sink) const;
  
    Clock* _clock;
    CtsOptions* _options;
    Logger* _logger;
    unsigned _numViolatingSinks = 0;
    unsigned _numInsertedBuffers = 0;
    double _avgSourceSinkDist = 0.0;
    double _bufDistRatio = 0.0;
    std::unordered_map<std::string, DBU> _sinkDistMap;
  };
  
  }  // namespace cts
  