Gabriele Cosmo
134 lines
3.2 KiB
C++
134 lines
3.2 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4Timer.hh,v 1.10 2000/01/06 14:27:09 gcosmo Exp $
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// GEANT4 tag $Name: geant4-01-01 $
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//
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//
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// ----------------------------------------------------------------------
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// Class G4Timer
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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 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 and it
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// must be the first header file to be included!
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//
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// Member functions:
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//
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// G4Timer()
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// Construct a timer object
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// Start()
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// Start timing
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// Stop()
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// Stop timing
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// G4bool IsValid()
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// Return true if have a valid time (ie start() and stop() called)
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// G4double GetRealElapsed()
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// Return the elapsed real time between last calling start() and stop()
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// G4double GetSystemElapsed()
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// Return the elapsed system time between last calling start() and stop()
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// G4double GetUserElapsed()
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// Return the elapsed user time between last calling start() and stop()
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//
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// Operators:
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//
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// G4std::ostream& operator << (G4std::ostream& os, const G4Timer& 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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//
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// Member data:
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//
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// G4bool fValidTimes
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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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// 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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// History:
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// 23.08.96 P.Kent Updated to also computed real elapsed time
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// 21.08.95 P.Kent
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// 29.04.97 G.Cosmo Added timings for Windows/NT
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#ifndef G4TIMER_HH
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#define G4TIMER_HH
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#ifndef WIN32
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# include <unistd.h>
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# include <sys/times.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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int sysconf(int);
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};
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// Structure returned by times()
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struct tms {
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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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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 G4Timer
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{
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public:
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G4Timer() : fValidTimes(false) {;}
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inline void Start();
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inline void Stop();
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inline G4bool IsValid() const;
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G4double GetRealElapsed() const;
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G4double GetSystemElapsed() const;
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G4double GetUserElapsed() const;
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private:
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G4bool fValidTimes;
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clock_t fStartRealTime,fEndRealTime;
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tms fStartTimes,fEndTimes;
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};
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G4std::ostream& operator << (G4std::ostream& os, const G4Timer& t);
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// Inline functions:
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inline void G4Timer::Start()
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{
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fValidTimes=false;
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fStartRealTime=times(&fStartTimes);
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}
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inline void G4Timer::Stop()
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{
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fEndRealTime=times(&fEndTimes);
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fValidTimes=true;
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}
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inline G4bool G4Timer::IsValid() const
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{
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return fValidTimes;
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}
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#define times ostimes
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#endif
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