1 #ifndef TIMER_HPP 2 #define TIMER_HPP 3 4 // Define LIBCXXABI_NO_TIMER to disable testing with a timer. 5 #ifndef LIBCXXABI_NO_TIMER 6 7 #include <chrono> 8 #include <iostream> 9 10 class timer 11 { 12 typedef std::chrono::high_resolution_clock Clock; 13 typedef Clock::time_point TimePoint; 14 typedef std::chrono::microseconds MicroSeconds; 15 public: timer()16 timer() : m_start(Clock::now()) {} 17 18 timer(timer const &) = delete; 19 timer & operator=(timer const &) = delete; 20 ~timer()21 ~timer() 22 { 23 using std::chrono::duration_cast; 24 TimePoint end = Clock::now(); 25 MicroSeconds us = duration_cast<MicroSeconds>(end - m_start); 26 std::cout << us.count() << " microseconds\n"; 27 } 28 29 private: 30 TimePoint m_start; 31 }; 32 33 #else /* LIBCXXABI_NO_TIMER */ 34 35 class timer 36 { 37 public: timer()38 timer() {} 39 timer(timer const &) = delete; 40 timer & operator=(timer const &) = delete; ~timer()41 ~timer() {} 42 }; 43 44 #endif /* LIBCXXABI_NO_TIMER */ 45 46 #endif /* TIMER_HPP */