src/pathfinder/pf_performance_timer.hpp

   1 /* $Id: pf_performance_timer.hpp 23640 2011-12-20 17:57:56Z truebrain $ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   6  * OpenTTD 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.
   7  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   8  */
   9
  10 /** @file pf_performance_timer.hpp Performance timer for pathfinders. */
  11
  12 #ifndef PF_PERFORMANCE_TIMER_HPP
  13 #define PF_PERFORMANCE_TIMER_HPP
  14
  15 #include "../debug.h"
  16
  17 struct CPerformanceTimer
  18 {
  19         int64    m_start;
  20         int64    m_acc;
  21
  22         CPerformanceTimer() : m_start(0), m_acc(0) {}
  23
  24         inline void Start()
  25         {
  26                 m_start = QueryTime();
  27         }
  28
  29         inline void Stop()
  30         {
  31                 m_acc += QueryTime() - m_start;
  32         }
  33
  34         inline int Get(int64 coef)
  35         {
  36                 return (int)(m_acc * coef / QueryFrequency());
  37         }
  38
  39         inline int64 QueryTime()
  40         {
  41                 return ottd_rdtsc();
  42         }
  43
  44         inline int64 QueryFrequency()
  45         {
  46                 return ((int64)2200 * 1000000);
  47         }
  48 };
  49
  50 struct CPerfStartReal
  51 {
  52         CPerformanceTimer *m_pperf;
  53
  54         inline CPerfStartReal(CPerformanceTimer* perf) : m_pperf(perf)
  55         {
  56                 if (m_pperf != NULL) m_pperf->Start();
  57         }
  58
  59         inline ~CPerfStartReal()
  60         {
  61                 Stop();
  62         }
  63
  64         inline void Stop()
  65         {
  66                 if (m_pperf != NULL) {
  67                         m_pperf->Stop();
  68                         m_pperf = NULL;
  69                 }
  70         }
  71 };
  72
  73 struct CPerfStartFake
  74 {
  75         inline CPerfStartFake(CPerformanceTimer* perf) {}
  76         inline ~CPerfStartFake() {}
  77         inline void Stop() {}
  78 };
  79
  80 typedef CPerfStartFake CPerfStart;
  81
  82 #endif /* PF_PERFORMANCE_TIMER_HPP */