CrystalSpace

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csutil/measuretime.h

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00001 /*
00002     Copyright (C) 2004-2006 by Jorrit Tyberghein
00003               (C) 2004-2006 by Frank Richter
00004 
00005     This library is free software; you can redistribute it and/or
00006     modify it under the terms of the GNU Library General Public
00007     License as published by the Free Software Foundation; either
00008     version 2 of the License, or (at your option) any later version.
00009 
00010     This library is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013     Library General Public License for more details.
00014 
00015     You should have received a copy of the GNU Library General Public
00016     License along with this library; if not, write to the Free
00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 */
00019 
00020 #ifndef __CS_CSUTIL_TIMEMEASURE_H__
00021 #define __CS_CSUTIL_TIMEMEASURE_H__
00022 
00027 #include "csutil/csstring.h"
00028 #include "csutil/util.h"
00029 #include "csutil/sysfunc.h"
00030 
00031 namespace CS
00032 {
00033 
00054   class CS_CRYSTALSPACE_EXPORT MeasureTime
00055   {
00056   protected:
00057     int64 offsetTime;
00058     csString text;
00059     void PrintTime (const char* prefix, int64 time, const char* suffix);
00060   public:
00064     MeasureTime (const char* format, ...)
00065     {
00066       va_list args;
00067       va_start (args, format);
00068       text.FormatV (format, args);
00069       va_end (args);
00070 
00071       offsetTime = csGetMicroTicks ();
00072     }
00073     
00074     ~MeasureTime ()
00075     {
00076       csTicks endTime = csGetMicroTicks ();
00077       PrintTime ((text + ": ").GetData(), endTime - offsetTime, 
00078         " \xC2\xB5s\n");
00079     }
00080     
00082     void PrintIntermediate (const char* descr, ...)
00083     {
00084       int64 currentTime = csGetMicroTicks ();
00085 
00086       csPrintf ("(%s)", text.GetData());
00087       va_list args;
00088       va_start (args, descr);
00089       csPrintfV (descr, args);
00090       va_end (args);
00091       PrintTime (": ", currentTime - offsetTime, " \xC2\xB5s\n");
00092       
00093       int64 currentTime2 = csGetMicroTicks ();
00094       // Correct difference from printing
00095       offsetTime += currentTime2 - currentTime;
00096     }
00097   };
00098  
00101 } // namespace CS
00102 
00103 #endif

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