src/util/timetaker.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) 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 Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "timetaker.h"
  21
  22 #include "../gettime.h"
  23 #include "../log.h"
  24 #include <ostream>
  25
  26 TimeTaker::TimeTaker(const char *name, u32 *result, TimePrecision prec)
  27 {
  28         m_name = name;
  29         m_result = result;
  30         m_running = true;
  31         m_precision = prec;
  32         m_time1 = getTime(prec);
  33 }
  34
  35 u32 TimeTaker::stop(bool quiet)
  36 {
  37         if(m_running)
  38         {
  39                 u32 time2 = getTime(m_precision);
  40                 u32 dtime = time2 - m_time1;
  41                 if(m_result != NULL)
  42                 {
  43                         (*m_result) += dtime;
  44                 }
  45                 else
  46                 {
  47                         if (!quiet) {
  48                                 static const char* const units[] = {
  49                                         "s"  /* PRECISION_SECONDS */,
  50                                         "ms" /* PRECISION_MILLI */,
  51                                         "us" /* PRECISION_MICRO */,
  52                                         "ns" /* PRECISION_NANO */,
  53                                 };
  54                                 infostream << m_name << " took "
  55                                            << dtime << units[m_precision]
  56                                            << std::endl;
  57                         }
  58                 }
  59                 m_running = false;
  60                 return dtime;
  61         }
  62         return 0;
  63 }
  64
  65 u32 TimeTaker::getTimerTime()
  66 {
  67         u32 time2 = getTime(m_precision);
  68         u32 dtime = time2 - m_time1;
  69         return dtime;
  70 }
  71