1 | //=====================================================
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2 | // File : portable_timer.hh
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3 | // Author : L. Plagne <laurent.plagne@edf.fr)> from boost lib
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4 | // Copyright (C) EDF R&D, lun sep 30 14:23:17 CEST 2002
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5 | //=====================================================
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6 | //
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7 | // This program is free software; you can redistribute it and/or
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8 | // modify it under the terms of the GNU General Public License
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9 | // as published by the Free Software Foundation; either version 2
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10 | // of the License, or (at your option) any later version.
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11 | //
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12 | // This program is distributed in the hope that it will be useful,
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13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | // GNU General Public License for more details.
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16 | // You should have received a copy of the GNU General Public License
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17 | // along with this program; if not, write to the Free Software
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18 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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19 | //
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20 | // simple_time extracted from the boost library
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21 | //
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22 | #ifndef _PORTABLE_TIMER_HH
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23 | #define _PORTABLE_TIMER_HH
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24 |
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25 | #include <ctime>
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26 | #include <cstdlib>
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27 |
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28 | #include <time.h>
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29 |
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30 |
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31 | #define USEC_IN_SEC 1000000
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32 |
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33 |
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34 | // timer -------------------------------------------------------------------//
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35 |
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36 | // A timer object measures CPU time.
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37 | #ifdef _MSC_VER
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38 |
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39 | #define NOMINMAX
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40 | #include <windows.h>
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41 |
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42 | /*#ifndef hr_timer
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43 | #include "hr_time.h"
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44 | #define hr_timer
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45 | #endif*/
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46 |
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47 | class Portable_Timer
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48 | {
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49 | public:
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50 |
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51 | typedef struct {
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52 | LARGE_INTEGER start;
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53 | LARGE_INTEGER stop;
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54 | } stopWatch;
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55 |
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56 |
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57 | Portable_Timer()
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58 | {
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59 | startVal.QuadPart = 0;
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60 | stopVal.QuadPart = 0;
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61 | QueryPerformanceFrequency(&frequency);
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62 | }
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63 |
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64 | void start() { QueryPerformanceCounter(&startVal); }
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65 |
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66 | void stop() { QueryPerformanceCounter(&stopVal); }
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67 |
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68 | double elapsed() {
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69 | LARGE_INTEGER time;
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70 | time.QuadPart = stopVal.QuadPart - startVal.QuadPart;
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71 | return LIToSecs(time);
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72 | }
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73 |
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74 | double user_time() { return elapsed(); }
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75 |
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76 |
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77 | private:
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78 |
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79 | double LIToSecs(LARGE_INTEGER& L) {
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80 | return ((double)L.QuadPart /(double)frequency.QuadPart) ;
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81 | }
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82 |
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83 | LARGE_INTEGER startVal;
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84 | LARGE_INTEGER stopVal;
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85 | LARGE_INTEGER frequency;
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86 |
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87 |
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88 | }; // Portable_Timer
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89 |
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90 | #else
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91 |
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92 | #include <sys/time.h>
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93 | #include <sys/resource.h>
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94 | #include <unistd.h>
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95 | #include <sys/times.h>
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96 |
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97 | class Portable_Timer
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98 | {
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99 | public:
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100 |
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101 | Portable_Timer()
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102 | {
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103 | m_clkid = BtlConfig::Instance.realclock ? CLOCK_REALTIME : CLOCK_PROCESS_CPUTIME_ID;
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104 | }
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105 |
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106 | Portable_Timer(int clkid) : m_clkid(clkid)
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107 | {}
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108 |
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109 | void start()
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110 | {
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111 | timespec ts;
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112 | clock_gettime(m_clkid, &ts);
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113 | m_start_time = double(ts.tv_sec) + 1e-9 * double(ts.tv_nsec);
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114 |
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115 | }
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116 |
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117 | void stop()
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118 | {
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119 | timespec ts;
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120 | clock_gettime(m_clkid, &ts);
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121 | m_stop_time = double(ts.tv_sec) + 1e-9 * double(ts.tv_nsec);
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122 |
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123 | }
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124 |
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125 | double elapsed()
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126 | {
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127 | return user_time();
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128 | }
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129 |
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130 | double user_time()
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131 | {
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132 | return m_stop_time - m_start_time;
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133 | }
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134 |
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135 |
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136 | private:
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137 |
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138 | int m_clkid;
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139 | double m_stop_time, m_start_time;
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140 |
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141 | }; // Portable_Timer
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142 |
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143 | #endif
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144 |
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145 | #endif // PORTABLE_TIMER_HPP
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