.. _program_listing_file_include_ripple_utility_timer.hpp:

Program Listing for File timer.hpp
==================================

|exhale_lsh| :ref:`Return to documentation for file <file_include_ripple_utility_timer.hpp>` (``include/ripple/utility/timer.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   
   #ifndef RIPPLE_UTILITY_TIMER_HPP
   #define RIPPLE_UTILITY_TIMER_HPP
   
   #include <chrono>
   
   namespace ripple {
   
   struct Timer {
     // clang-format off
     using Clock     = std::chrono::high_resolution_clock;
     using TimePoint = typename Clock::time_point;
     using Duration  = std::chrono::duration<double>;
     // clang-format on
   
     static constexpr double microsecs_to_millisecs = 1000.0;
   
     Timer() noexcept {
       reset();
     }
   
     auto reset() noexcept -> void {
       start_ = Clock::now();
     }
   
     auto elapsed(bool reset_timer = false) noexcept -> double {
       TimePoint curr      = Clock::now();
       Duration  time_span = std::chrono::duration_cast<Duration>(curr - start_);
   
       if (reset_timer) {
         reset();
       }
       return time_span.count();
     }
   
     auto elapsed_msec(bool reset_timer = false) noexcept -> double {
       return elapsed(reset_timer) * microsecs_to_millisecs;
     }
   
    private:
     TimePoint start_; 
   };
   
   } // namespace ripple
   
   #endif // RIPPLE_UTILITY_TIMER_HPP