xbmc/utils/PerformanceStats.cpp

   1 /*
   2  *      Copyright (C) 2005-2008 Team XBMC
   3  *      http://www.xbmc.org
   4  *
   5  *  This Program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2, or (at your option)
   8  *  any later version.
   9  *
  10  *  This Program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with XBMC; see the file COPYING.  If not, write to
  17  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *  http://www.gnu.org/copyleft/gpl.html
  19  *
  20  */
  21
  22 #include "PerformanceStats.h"
  23 #include "PerformanceSample.h"
  24 #include "log.h"
  25
  26 using namespace std;
  27
  28 CPerformanceStats::CPerformanceStats()
  29 {
  30 }
  31
  32
  33 CPerformanceStats::~CPerformanceStats()
  34 {
  35   map<string, PerformanceCounter*>::iterator iter = m_mapStats.begin();
  36   while (iter != m_mapStats.end())
  37   {
  38     delete iter->second;
  39     iter++;
  40   }
  41   m_mapStats.clear();
  42 }
  43
  44 void CPerformanceStats::AddSample(const string &strStatName, const PerformanceCounter &perf)
  45 {
  46   map<string, PerformanceCounter*>::iterator iter = m_mapStats.find(strStatName);
  47   if (iter == m_mapStats.end())
  48     m_mapStats[strStatName] = new PerformanceCounter(perf);
  49   else
  50   {
  51     iter->second->m_time += perf.m_time;
  52     iter->second->m_samples += perf.m_samples;
  53   }
  54 }
  55
  56 void CPerformanceStats::AddSample(const string &strStatName, double dTime)
  57 {
  58   AddSample(strStatName, *(new PerformanceCounter(dTime)));
  59 }
  60
  61 void CPerformanceStats::DumpStats()
  62 {
  63   double dError = CPerformanceSample::GetEstimatedError();
  64   CLog::Log(LOGINFO, "%s - estimated error: %f", __FUNCTION__, dError);
  65   CLog::Log(LOGINFO, "%s - ignore user/sys values when sample count is low", __FUNCTION__);
  66
  67   map<string, PerformanceCounter*>::iterator iter = m_mapStats.begin();
  68   while (iter != m_mapStats.end())
  69   {
  70     double dAvg = iter->second->m_time / (double)iter->second->m_samples;
  71     double dAvgUser = iter->second->m_user / (double)iter->second->m_samples;
  72     double dAvgSys  = iter->second->m_sys / (double)iter->second->m_samples;
  73     CLog::Log(LOGINFO, "%s - counter <%s>. avg duration: <%f sec>, avg user: <%f>, avg sys: <%f> (%llu samples)",
  74       __FUNCTION__, iter->first.c_str(), dAvg, dAvgUser, dAvgSys, iter->second->m_samples);
  75     iter++;
  76   }
  77 }
  78
  79