TStopwatch.h
// @(#)root/base:$Name: $:$Id: TStopwatch.h,v 1.1.1.1 2000/05/16 17:00:39 rdm Exp $
// Author: Fons Rademakers 11/10/95
/*************************************************************************
* Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
#ifndef ROOT_TStopwatch
#define ROOT_TStopwatch
//////////////////////////////////////////////////////////////////////////
// //
// TStopwatch //
// //
// Stopwatch class. This class returns the real and cpu time between //
// the start and stop events. //
// //
//////////////////////////////////////////////////////////////////////////
#ifndef ROOT_TObject
#include "TObject.h"
#endif
class TStopwatch : public TObject {
private:
enum EState { kUndefined, kStopped, kRunning };
Double_t fStartRealTime; //wall clock start time
Double_t fStopRealTime; //wall clock stop time
Double_t fStartCpuTime; //cpu start time
Double_t fStopCpuTime; //cpu stop time
Double_t fTotalCpuTime; //total cpu time
Double_t fTotalRealTime; //total real time
EState fState; //stopwatch state
Int_t fCounter; //number of times the stopwatch was started
public:
TStopwatch();
void Start(Bool_t reset = kTRUE);
void Stop();
void Continue();
Int_t Counter() const { return fCounter; }
Double_t RealTime();
void Reset() { ResetCpuTime(); ResetRealTime(); }
void ResetCpuTime(Double_t time = 0) { Stop(); fTotalCpuTime = time; }
void ResetRealTime(Double_t time = 0) { Stop(); fTotalRealTime = time; }
Double_t CpuTime();
void Print(Option_t *option="") const;
static Double_t GetRealTime();
static Double_t GetCPUTime();
ClassDef(TStopwatch,0) //A stopwatch which times real and cpu time
};
#endif