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 "../porting.h"
  23 #include "../log.h"
  24 #include <ostream>
  25
  26 TimeTaker::TimeTaker(const std::string &name, u64 *result, TimePrecision prec)
  27 {
  28         m_name = name;
  29         m_result = result;
  30         m_running = true;
  31         m_precision = prec;
  32         m_time1 = porting::getTime(prec);
  33 }
  34
  35 u64 TimeTaker::stop(bool quiet)
  36 {
  37         if (m_running) {
  38                 u64 dtime = porting::getTime(m_precision) - m_time1;
  39                 if (m_result != NULL) {
  40                         (*m_result) += dtime;
  41                 } else {
  42                         if (!quiet) {
  43                                 static const char* const units[] = {
  44                                         "s"  /* PRECISION_SECONDS */,
  45                                         "ms" /* PRECISION_MILLI */,
  46                                         "us" /* PRECISION_MICRO */,
  47                                         "ns" /* PRECISION_NANO */,
  48                                 };
  49                                 infostream << m_name << " took "
  50                                            << dtime << units[m_precision]
  51                                            << std::endl;
  52                         }
  53                 }
  54                 m_running = false;
  55                 return dtime;
  56         }
  57         return 0;
  58 }
  59
  60 u64 TimeTaker::getTimerTime()
  61 {
  62         return porting::getTime(m_precision) - m_time1;
  63 }
  64