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  1. #include <iostream>
  2. #include <chrono>
  3.  
  4. class MeasureExecTime
  5. {
  6.     static std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> p;
  7. public:
  8.     static void start()
  9.     {
  10.         p = std::chrono::high_resolution_clock::now(); 
  11.     }
  12.  
  13.     static void stop(const char *name)
  14.     {
  15.         auto p2 = std::chrono::high_resolution_clock::now();
  16.         auto duration = std::chrono::duration_cast<std::chrono::microseconds>(p2 - p);
  17.         std::cerr << name << ": " << duration.count() << "us" << std::endl;
  18.     }
  19. };
  20.  
  21. std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> MeasureExecTime::p{};
  22.  
  23.  
  24. int main() {
  25. 	MeasureExecTime::start();
  26. 	std::cout << "test" << std::endl;
  27. 	MeasureExecTime::stop("std::cout");
  28.  
  29. 	return 0;
  30. }
Success #stdin #stdout #stderr 0s 4484KB
comments (?)
stdin
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Standard input is empty
stdout
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test
stderr
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std::cout: 47us
https://ideone.com/KVTXDI
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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