xbmc/utils/PerformanceSample.h

   1 #ifndef __PERFORMANCE_SAMPLE__
   2 #define __PERFORMANCE_SAMPLE__
   3
   4 /*
   5  *      Copyright (C) 2005-2008 Team XBMC
   6  *      http://www.xbmc.org
   7  *
   8  *  This Program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2, or (at your option)
  11  *  any later version.
  12  *
  13  *  This Program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with XBMC; see the file COPYING.  If not, write to
  20  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *  http://www.gnu.org/copyleft/gpl.html
  22  *
  23  */
  24
  25 #ifdef _LINUX
  26 #include "linux/PlatformDefs.h"
  27 #include <sys/time.h>
  28 #include <sys/times.h>
  29 #include <sys/resource.h>
  30 #endif
  31
  32 #include <string>
  33
  34 #ifndef NO_PERFORMANCE_MEASURE
  35 #define MEASURE_FUNCTION CPerformanceSample aSample(__FUNCTION__,true);
  36 #define BEGIN_MEASURE_BLOCK(n) { CPerformanceSample aSample(n,true);
  37 #define END_MEASURE_BLOCK }
  38 #else
  39 #define MEASURE_FUNCTION
  40 #define BEGIN_MEASURE_BLOCK(n)
  41 #define END_MEASURE_BLOCK
  42 #endif
  43
  44 class CPerformanceSample
  45 {
  46 public:
  47   CPerformanceSample(const std::string &statName, bool bCheckWhenDone=true);
  48   virtual ~CPerformanceSample();
  49
  50   void Reset();
  51   void CheckPoint(); // will add a sample to stats and restart counting.
  52
  53   static double GetEstimatedError();
  54
  55 protected:
  56   std::string m_statName;
  57   bool m_bCheckWhenDone;
  58
  59 #ifdef _LINUX
  60   struct rusage m_usage;
  61 #endif
  62
  63   int64_t m_tmStart;
  64   static int64_t m_tmFreq;
  65 };
  66
  67 #endif