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9283bba22f
Added Message_MetricType_WallClock metric type handled by Message_AttributeMeter. Added public OSD_Timer::GetWallClockTime() method.
101 lines
3.8 KiB
C++
101 lines
3.8 KiB
C++
// Created on: 2018-03-15
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// Created by: Stephan GARNAUD (ARM)
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// Copyright (c) 1998-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _OSD_Timer_HeaderFile
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#define _OSD_Timer_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <Standard_Real.hxx>
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#include <OSD_Chronometer.hxx>
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#include <Standard_OStream.hxx>
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#include <Standard_Integer.hxx>
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//! Working on heterogeneous platforms
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//! we need to use the system call gettimeofday.
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//! This function is portable and it measures ELAPSED
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//! time and CPU time in seconds and microseconds.
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//! Example: OSD_Timer aTimer;
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//! aTimer.Start(); // Start the timers (t1).
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//! ..... // Do something.
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//! aTimer.Stop(); // Stop the timers (t2).
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//! aTimer.Show(); // Give the elapsed time between t1 and t2.
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//! // Give also the process CPU time between
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//! // t1 and t2.
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class OSD_Timer : public OSD_Chronometer
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{
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public:
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//! Returns current time in seconds with system-defined precision.
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//! The could be a system uptime or a time from some date.
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//! Returned value is intended for precise elapsed time measurements as a delta between timestamps.
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//! On Windows implemented via QueryPerformanceCounter(), on other systems via gettimeofday().
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Standard_EXPORT static Standard_Real GetWallClockTime();
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public:
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DEFINE_STANDARD_ALLOC
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//! Builds a Chronometer initialized and stopped.
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//! @param theThisThreadOnly when TRUE, measured CPU time will account time of the current thread only;
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//! otherwise CPU of the process (all threads, and completed children) is measured;
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//! this flag does NOT affect ElapsedTime() value, only values returned by OSD_Chronometer
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Standard_EXPORT OSD_Timer (Standard_Boolean theThisThreadOnly = Standard_False);
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//! Stops and reinitializes the timer with specified elapsed time.
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Standard_EXPORT void Reset (const Standard_Real theTimeElapsedSec);
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//! Stops and reinitializes the timer with zero elapsed time.
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Standard_EXPORT virtual void Reset() Standard_OVERRIDE;
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//! Restarts the Timer.
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Standard_EXPORT virtual void Restart() Standard_OVERRIDE;
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//! Shows both the elapsed time and CPU time on the standard output
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//! stream <cout>.The chronometer can be running (Lap Time) or
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//! stopped.
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Standard_EXPORT virtual void Show() const Standard_OVERRIDE;
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//! Shows both the elapsed time and CPU time on the
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//! output stream <OS>.
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Standard_EXPORT virtual void Show (Standard_OStream& os) const Standard_OVERRIDE;
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//! returns both the elapsed time(seconds,minutes,hours)
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//! and CPU time.
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Standard_EXPORT void Show (Standard_Real& theSeconds, Standard_Integer& theMinutes, Standard_Integer& theHours, Standard_Real& theCPUtime) const;
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//! Stops the Timer.
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Standard_EXPORT virtual void Stop() Standard_OVERRIDE;
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//! Starts (after Create or Reset) or restarts (after Stop)
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//! the Timer.
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Standard_EXPORT virtual void Start() Standard_OVERRIDE;
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//! Returns elapsed time in seconds.
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Standard_EXPORT Standard_Real ElapsedTime() const;
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private:
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Standard_Real myTimeStart;
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Standard_Real myTimeCumul;
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};
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#endif // _OSD_Timer_HeaderFile
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