Public API Reference

csutil/measuretime.h

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/*
    Copyright (C) 2004-2006 by Jorrit Tyberghein
              (C) 2004-2006 by Frank Richter

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef __CS_CSUTIL_TIMEMEASURE_H__
#define __CS_CSUTIL_TIMEMEASURE_H__

#include "csutil/csstring.h"
#include "csutil/util.h"
#include "csutil/sysfunc.h"

namespace CS
{

  class CS_CRYSTALSPACE_EXPORT MeasureTime
  {
  protected:
    int64 offsetTime;
    csString text;
    void PrintTime (const char* prefix, int64 time, const char* suffix);
  public:
    MeasureTime (const char* format, ...)
    {
      va_list args;
      va_start (args, format);
      text.FormatV (format, args);
      va_end (args);

      offsetTime = csGetMicroTicks ();
    }
    
    ~MeasureTime ()
    {
      csTicks endTime = csGetMicroTicks ();
      PrintTime ((text + ": ").GetData(), endTime - offsetTime, 
        " \xC2\xB5s\n");
    }
    
    void PrintIntermediate (const char* descr, ...)
    {
      int64 currentTime = csGetMicroTicks ();

      csPrintf ("(%s)", text.GetData());
      va_list args;
      va_start (args, descr);
      csPrintfV (descr, args);
      va_end (args);
      PrintTime (": ", currentTime - offsetTime, " \xC2\xB5s\n");
      
      int64 currentTime2 = csGetMicroTicks ();
      // Correct difference from printing
      offsetTime += currentTime2 - currentTime;
    }
  };
 
} // namespace CS

#endif

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