00001 // @(#)root/base:$Id: TStopwatch.h 20877 2007-11-19 11:17:07Z rdm $ 00002 // Author: Fons Rademakers 11/10/95 00003 00004 /************************************************************************* 00005 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. * 00006 * All rights reserved. * 00007 * * 00008 * For the licensing terms see $ROOTSYS/LICENSE. * 00009 * For the list of contributors see $ROOTSYS/README/CREDITS. * 00010 *************************************************************************/ 00011 00012 #ifndef ROOT_TStopwatch 00013 #define ROOT_TStopwatch 00014 00015 00016 ////////////////////////////////////////////////////////////////////////// 00017 // // 00018 // TStopwatch // 00019 // // 00020 // Stopwatch class. This class returns the real and cpu time between // 00021 // the start and stop events. // 00022 // // 00023 ////////////////////////////////////////////////////////////////////////// 00024 00025 #ifndef ROOT_TObject 00026 #include "TObject.h" 00027 #endif 00028 00029 00030 class TStopwatch : public TObject { 00031 00032 private: 00033 enum EState { kUndefined, kStopped, kRunning }; 00034 00035 Double_t fStartRealTime; //wall clock start time 00036 Double_t fStopRealTime; //wall clock stop time 00037 Double_t fStartCpuTime; //cpu start time 00038 Double_t fStopCpuTime; //cpu stop time 00039 Double_t fTotalCpuTime; //total cpu time 00040 Double_t fTotalRealTime; //total real time 00041 EState fState; //stopwatch state 00042 Int_t fCounter; //number of times the stopwatch was started 00043 00044 static Double_t GetRealTime(); 00045 static Double_t GetCPUTime(); 00046 00047 public: 00048 TStopwatch(); 00049 void Start(Bool_t reset = kTRUE); 00050 void Stop(); 00051 void Continue(); 00052 Int_t Counter() const { return fCounter; } 00053 Double_t RealTime(); 00054 void Reset() { ResetCpuTime(); ResetRealTime(); } 00055 void ResetCpuTime(Double_t time = 0) { Stop(); fTotalCpuTime = time; } 00056 void ResetRealTime(Double_t time = 0) { Stop(); fTotalRealTime = time; } 00057 Double_t CpuTime(); 00058 void Print(Option_t *option="") const; 00059 00060 ClassDef(TStopwatch,1) //A stopwatch which times real and cpu time 00061 }; 00062 00063 #endif
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