You can use, comment, criticize, or flame my design at will.
class MTimer{public: __int64 Resolution; __int64 StartedT; __int64 SampledT; __int64 LastT; MTimer() { StartedT = 0; SampledT = 0; LastT = 0; } ~MTimer() { } bool Init() { LARGE_INTEGER freq; if(QueryPerformanceFrequency((LARGE_INTEGER*)&freq)) { Resolution = freq.QuadPart; return true; } return false; } bool Start() { if(!Resolution) // first check for Init() success return false; LARGE_INTEGER samp; if(QueryPerformanceCounter((LARGE_INTEGER*)&samp)) { StartedT = samp.QuadPart; LastT = StartedT; return true; } return false; } double Sample() { if(!Resolution) return -1.0; LARGE_INTEGER samp; if(QueryPerformanceCounter((LARGE_INTEGER*)&samp)) { SampledT = samp.QuadPart; double t = (double)(SampledT - LastT) / (double)Resolution; LastT = SampledT; return t; } return 0.0; } double Elapsed() { if(!Resolution) return -1.0; LARGE_INTEGER samp; if(QueryPerformanceCounter((LARGE_INTEGER*)&samp)) { SampledT = samp.QuadPart; double t = (double)(SampledT - StartedT) / (double)Resolution; return t; } return 0.0; }};this is kinda what my test app looks like, just wanted to keep it a short example of use.
int main(){ double Timed, Elapsed; MTimer MozTime; MozTimer.Init(); MozTimer.Start(); for(int i=0;i<100;++i) { Sleep(100 - i); Timed = MozTimer.Sample(); // output or evaluate, whatever you need } Elapsed = MozTimer.Elapsed();}