DurationCounter.hpp

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#ifndef H_POTTU_DURATIONCOUNTER
#define H_POTTU_DURATIONCOUNTER
 
 
#include <chrono>
 
 
struct DurationCounter {
    using clock_t = std::chrono::steady_clock;
 
    void start() noexcept {
    if( running )
        return;
    currentStart = clock_t::now();
    running = true;
    }
 
    void stop() noexcept {
    if( running ) {
        running = false;
        total += clock_t::now()-currentStart;
    }
    }
 
    double get() const noexcept {
    if( running )
        return ( std::chrono::duration<double>( (total + (clock_t::now()-currentStart)) ) ).count();
    return ( std::chrono::duration<double>( total ) ).count();
    }
    
    clock_t::duration   total{0};
    bool                running{false};
    clock_t::time_point currentStart;
};
 
 
#endif