Class bench_function_impl

include/fplus/benchmark_session.hpp:84–113

namespace internal {
    template <typename Fn>
    class bench_function_impl {
    public:
        explicit bench_function_impl(
            benchmark_session& benchmark_sess,
            FunctionName function_name,
            Fn fn)
            : benchmark_session_(benchmark_sess)
            , function_name_(function_name)
            , fn_(fn) {};

        template <typename... Args>
        auto operator()(Args&&... args)
        {
            return _bench_result(std::forward<Args>(args)...);
        }

    private:
        template <typename... Args>
        auto _bench_result(Args&&... args)
        {
            fplus::stopwatch timer;
            auto r = fn_(std::forward<Args>(args)...);
            benchmark_session_.store_one_time(function_name_, timer.elapsed());
            return r;
        }

        benchmark_session& benchmark_session_;
        FunctionName function_name_;
        Fn fn_;
    };

    template <typename Fn>
    class bench_void_function_impl {