I have quite long experience in C++ programming and I always had problems profiling my application. Recently I found Win32 function (QueryPerformanceCounter) which returns exact time in 1/1,000,000th of second and I wrote handy class to ease this task.
Main features of QProfile toolkit:
1. Application runs at the same speed
as usual
2. You can get per-thread information
3. Profiling is independent from development enviroment
4. Report can be directed/appended to file or/and consol
or/and VC++ debug window
5. Results can be sorted by total time, pure time,
hit number or time per hit
How to use QProfile class
1. Download QProfile source code (7.5K)
2. Include QProfile.cpp file to your project
3. Add line "include "QProfile.h"" to the common
header or to specific C++ file
4. Add QProfile macro to the target functions
5. Compile and run
6. Look at "QProfile.txt" or/and consol
or/and VC++ debug window for results.
QProfile macros
All you have to do is to add a line to a function you want to profile.
| bool
YourClass::YourFunction(){ QPROFILE_FUN("YourClass::YourFunction"); ... if (...) return false; ... return true;} |
If you want to get results for this function per thread:
| bool
YourClass::YourFunction(){ QPROFILE_MT_FUN1("YourFunction,thread:%lx",GetCurrentThread()); ... if (...) return false; ... return true;} |
After program exits you'll get profile report like this:
----------------- Profiling .results ----------------- |