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  1. #include <iostream>
  2. #include <string>
  3. #include <memory>
  4. #include <chrono>
  5. #include <vector>
  6. using namespace std;
  7.  
  8. #define ITER 100000
  9.  
  10. class Print{
  11.  
  12. public:
  13.  
  14. virtual void print(int p1, float p2, float p3, float p4){/*print */}
  15.  
  16. };
  17.  
  18. class PrintWrapper
  19. {
  20.  
  21.     public:
  22.  
  23.       PrintWrapper(shared_ptr<Print> print, int p1, float p2, float p3, float p4) :
  24.       m_print(print), _p1(p1),_p2(p2),_p3(p3),_p4(p4){}
  25.  
  26.       ~PrintWrapper(){}
  27.  
  28.       void execute()
  29.       { 
  30.         m_print->print(_p1,_p2,_p3,_p4); 
  31.       }
  32.  
  33.     private:
  34.  
  35.       shared_ptr<Print> m_print;
  36.       int _p1;
  37.       float _p2,_p3,_p4;
  38.  
  39. };
  40.  
  41. void test()
  42. {
  43.  shared_ptr<Print> p(new Print());
  44.  shared_ptr<PrintWrapper> pw(new PrintWrapper(p, 1, 2.f,3.0f,4.0f));
  45.  
  46.  //-------------test 1-------------------------
  47.  auto time1 = std::chrono::system_clock::now();
  48.  
  49.  for (auto var = 0; var < ITER; ++var) 
  50.  {
  51.    p->print(1, 2.f,3.0f,4.0f);
  52.  }
  53.  
  54.  auto time2 = std::chrono::system_clock::now();
  55.  
  56.  cout <<"test 1 : "<< (time2 - time1).count() << " microseconds." << endl;
  57.  
  58.   //-------------test 2-------------------------
  59.  auto time3 = std::chrono::system_clock::now();
  60.  
  61.  for (auto var = 0; var < ITER; ++var) 
  62.  {
  63.    pw->execute();
  64.  }
  65.  
  66.  auto time4 = std::chrono::system_clock::now();
  67.  
  68.  cout <<"test 2 : "<< (time4 - time3).count() << " microseconds." << endl;
  69.  
  70. }
  71. int main() { test(); }
Success #stdin #stdout 0s 2960KB
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Standard input is empty
stdout
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test : 2946 microseconds.
https://ideone.com/p3hjp
language:
C++14 (gcc 8.3)
created:
13 years ago
visibility:
secret

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