调试测试某一段代码的执行

AutoTimeStamp类
  1. classAutoTimeStamp
  2. {
  3. public:
  4. AutoTimeStamp(constchar*pcLog)
  5. {
  6. m_fTimeBegin= DxGetCurrentTimeInSec();
  7. m_pcLog= pcLog;
  8. }
  9. ~AutoTimeStamp()
  10. {
  11. floatfTime =DxGetCurrentTimeInSec();
  12. floatfTimeDelta =fTime –m_fTimeBegin;
  13. charstr[100];
  14. //if(fTimeDelta > 0.001)
  15. //{
  16. sprintf_s(str,“%s:%f”,m_pcLog,fTimeDelta);
  17. cout<< str<<endl;
  18. //}
  19. }
  21. floatm_fTimeBegin;
  22. constchar*m_pcLog;
  23. };
  24. #define DEFINE_AUTO_TIMESTAMP(x)AutoTimeStampkTimeStamp(x);
用到的获取当前时间的函数
  1. floatDxGetCurrentTimeInSec()
  2. {
  3. staticboolbFirst =true;
  4. staticLARGE_INTEGERfreq;
  5. staticLARGE_INTEGERinitial;
  7. if(bFirst)
  8. {
  9. QueryPerformanceFrequency(&freq);
  10. QueryPerformanceCounter(&initial);
  11. bFirst= false;
  12. }
  14. LARGE_INTEGERcounter;
  15. QueryPerformanceCounter(&counter);
  16. return(float)((long double)
  17. (counter.QuadPart– initial.QuadPart) /
  18. (longdouble)freq.QuadPart);
  19. }

使用方法如下：

测试
  1. voidmain()
  2. {
  3. set<int>kSet;
  4. kSet.insert(1);
  7. for(inti = 0;i< 10000; ++i)
  8. {
  9. kSet.insert(i);
  10. }
  12. {
  13. DEFINE_AUTO_TIMESTAMP(“find10000001 10000times use time:”)
  14. for(inti = 0;i< 10000; ++i)
  15. {
  16. if(kSet.find(10000001)!= kSet.end());
  17. }
  18. }
  19. }

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