Created
May 11, 2014 12:00
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High Precision Timer for Windows
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| #include <windows.h> | |
| class HPTimer | |
| { | |
| public: | |
| HPTimer( std::string name ) : total(0.0), name_(name) | |
| { | |
| } | |
| void reset() | |
| { | |
| total = 0.0; | |
| } | |
| void start() | |
| { | |
| QueryPerformanceCounter(&start_); | |
| } | |
| void stop() | |
| { | |
| QueryPerformanceCounter( &end_ ); | |
| QueryPerformanceFrequency( &frequency ); | |
| total += (double)( end_.QuadPart - start_.QuadPart ) / frequency.QuadPart; | |
| } | |
| void show() | |
| { | |
| char text[200]; | |
| sprintf( text, "%f", get_total() ); | |
| MessageBox( 0, text, name_.c_str(), MB_OK ); | |
| } | |
| double get_total() | |
| { | |
| return total; | |
| } | |
| private: | |
| LARGE_INTEGER frequency; | |
| LARGE_INTEGER start_; | |
| LARGE_INTEGER end_; | |
| double total; | |
| std::string name_; | |
| }; |
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| func() | |
| { | |
| // Your code is here | |
| HPTimer timer( "Cumulative time" ); | |
| timer.start(); | |
| // Your code is here too | |
| timer.stop(); | |
| timer.start(); | |
| // Your code is here too | |
| timer.stop(); | |
| // and here | |
| timer.show(); | |
| } |
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