text: 
  //          Copyright Oliver Kowalke 2009.
  // Distributed under the Boost Software License, Version 1.0.
  //    (See accompanying file LICENSE_1_0.txt or copy at
  //          http://www.boost.org/LICENSE_1_0.txt)
  
  #include <cstdlib>
  #include <iostream>
  #include <stdexcept>
  #include <string>
  #include <thread>
  
  #include <boost/cstdint.hpp>
  #include <boost/preprocessor.hpp>
  #include <boost/program_options.hpp>
  
  #include "../clock.hpp"
  
  #ifndef JOBS
  #define JOBS BOOST_PP_LIMIT_REPEAT
  #endif
  
  #define DETACH(z, n, _) \
  { \
      std::thread t( worker); \
      time_point_type start( clock_type::now() ); \
      t.detach(); \
      duration_type total = clock_type::now() - start; \
      total -= overhead; \
      result += total; \
  }
  
  void worker() {}
  
  duration_type measure( duration_type overhead)
  {
      std::thread( worker).join();
  
      duration_type result = duration_type::zero();
  
      BOOST_PP_REPEAT_FROM_TO(1, JOBS, DETACH, _)
  
      result /= JOBS;  // loops
  
      return result;
  }
  
  int main( int argc, char * argv[])
  {
      try
      {
          duration_type overhead = overhead_clock();
          boost::uint64_t res = measure( overhead).count();
          std::cout << "average of " << res << " nano seconds" << std::endl;
  
          return EXIT_SUCCESS;
      }
      catch ( std::exception const& e)
      { std::cerr << "exception: " << e.what() << std::endl; }
      catch (...)
      { std::cerr << "unhandled exception" << std::endl; }
      return EXIT_FAILURE;
  }
  