Gabriele Cosmo
114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// G4SliceTimer
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//
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// Class description:
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//
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// Class for timer objects, able to measure elasped user/system process
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// accumulated time.
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//
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// Note: Uses <sys/times.h> & <unistd.h> - POSIX.1 defined
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// If used, this header must be included in the source (.cc) file
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// and it must be the first header file to be included!
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// Author: M.Asai, 23.10.06 - Derived from G4Timer implementation
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// --------------------------------------------------------------------
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#ifndef G4SLICE_TIMER_HH
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#define G4SLICE_TIMER_HH 1
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#if !(defined(WIN32) || defined(__MINGW32__))
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# include <sys/times.h>
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# include <unistd.h>
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#else
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# include <time.h>
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# define _SC_CLK_TCK 1
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extern "C"
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{
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int sysconf(int);
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};
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// Structure returned by times()
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//
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struct tms
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{
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clock_t tms_utime; /* user time */
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clock_t tms_stime; /* system time */
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clock_t tms_cutime; /* user time, children */
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clock_t tms_cstime; /* system time, children */
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};
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extern "C"
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{
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extern clock_t times(struct tms*);
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};
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#endif /* WIN32 */
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#include "G4Types.hh"
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#include "G4ios.hh"
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class G4SliceTimer
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{
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public:
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G4SliceTimer();
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// Construct a timer object
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inline void Start();
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// Start timing
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inline void Stop();
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// Stop timing
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inline void Clear();
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// Clear accumulated times
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inline G4bool IsValid() const;
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// Return true if have a valid time (ie start() and stop() called)
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G4double GetRealElapsed() const;
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// Return the elapsed real time between last calling start() and stop()
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G4double GetSystemElapsed() const;
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// Return the elapsed system time between last calling start() and stop()
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G4double GetUserElapsed() const;
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// Return the elapsed user time between last calling start() and stop()
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private:
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clock_t fStartRealTime, fEndRealTime;
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// Real times (arbitrary time 0)
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tms fStartTimes, fEndTimes;
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// Timing structures (see times(2)) for start and end times
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G4double fRealElapsed = 0.0, fSystemElapsed = 0.0, fUserElapsed = 0.0;
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G4bool fValidTimes = true;
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// True after start and stop have both been called more than once and
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// an equal number of times
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};
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std::ostream& operator<<(std::ostream& os, const G4SliceTimer& t);
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// Print the elapsed real,system and usertimes on os. Prints **s for times
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// if !IsValid
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#include "G4SliceTimer.icc"
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#endif
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