1 | //=====================================================
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2 | // File : x86_timer.hh
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3 | // Author : L. Plagne <laurent.plagne@edf.fr)>
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4 | // Copyright (C) EDF R&D, mar d�c 3 18:59:35 CET 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 | #ifndef _X86_TIMER_HH
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21 | #define _X86_TIMER_HH
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22 |
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23 | #include <sys/time.h>
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24 | #include <sys/resource.h>
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25 | #include <unistd.h>
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26 | #include <sys/times.h>
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27 | //#include "system_time.h"
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28 | #define u32 unsigned int
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29 | #include <asm/msr.h>
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30 | #include "utilities.h"
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31 | #include <map>
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32 | #include <fstream>
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33 | #include <string>
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34 | #include <iostream>
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35 |
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36 | // frequence de la becanne en Hz
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37 | //#define FREQUENCY 648000000
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38 | //#define FREQUENCY 1400000000
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39 | #define FREQUENCY 1695000000
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40 |
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41 | using namespace std;
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42 |
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43 |
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44 | class X86_Timer {
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45 |
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46 | public :
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47 |
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48 | X86_Timer( void ):_frequency(FREQUENCY),_nb_sample(0)
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49 | {
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50 | MESSAGE("X86_Timer Default Ctor");
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51 | }
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52 |
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53 | inline void start( void ){
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54 |
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55 | rdtsc(_click_start.n32[0],_click_start.n32[1]);
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56 |
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57 | }
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58 |
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59 |
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60 | inline void stop( void ){
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61 |
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62 | rdtsc(_click_stop.n32[0],_click_stop.n32[1]);
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63 |
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64 | }
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65 |
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66 |
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67 | inline double frequency( void ){
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68 | return _frequency;
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69 | }
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70 |
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71 | double get_elapsed_time_in_second( void ){
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72 |
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73 | return (_click_stop.n64-_click_start.n64)/double(FREQUENCY);
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74 |
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75 |
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76 | }
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77 |
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78 | unsigned long long get_click( void ){
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79 |
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80 | return (_click_stop.n64-_click_start.n64);
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81 |
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82 | }
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83 |
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84 | inline void find_frequency( void ){
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85 |
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86 | time_t initial, final;
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87 | int dummy=2;
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88 |
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89 | initial = time(0);
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90 | start();
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91 | do {
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92 | dummy+=2;
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93 | }
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94 | while(time(0)==initial);
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95 | // On est au debut d'un cycle d'une seconde !!!
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96 | initial = time(0);
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97 | start();
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98 | do {
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99 | dummy+=2;
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100 | }
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101 | while(time(0)==initial);
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102 | final=time(0);
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103 | stop();
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104 | // INFOS("fine grained time : "<< get_elapsed_time_in_second());
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105 | // INFOS("coarse grained time : "<< final-initial);
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106 | _frequency=_frequency*get_elapsed_time_in_second()/double(final-initial);
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107 | /// INFOS("CPU frequency : "<< _frequency);
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108 |
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109 | }
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110 |
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111 | void add_get_click( void ){
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112 |
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113 | _nb_sample++;
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114 | _counted_clicks[get_click()]++;
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115 | fill_history_clicks();
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116 |
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117 | }
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118 |
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119 | void dump_statistics(string filemane){
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120 |
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121 | ofstream outfile (filemane.c_str(),ios::out) ;
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122 |
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123 | std::map<unsigned long long , unsigned long long>::iterator itr;
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124 | for(itr=_counted_clicks.begin() ; itr!=_counted_clicks.end() ; itr++)
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125 | {
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126 | outfile << (*itr).first << " " << (*itr).second << endl ;
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127 | }
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128 |
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129 | outfile.close();
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130 |
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131 | }
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132 |
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133 | void dump_history(string filemane){
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134 |
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135 | ofstream outfile (filemane.c_str(),ios::out) ;
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136 |
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137 |
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138 |
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139 | for(int i=0 ; i<_history_mean_clicks.size() ; i++)
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140 | {
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141 | outfile << i << " "
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142 | << _history_mean_clicks[i] << " "
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143 | << _history_shortest_clicks[i] << " "
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144 | << _history_most_occured_clicks[i] << endl ;
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145 | }
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146 |
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147 | outfile.close();
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148 |
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149 | }
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150 |
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151 |
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152 |
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153 | double get_mean_clicks( void ){
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154 |
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155 | std::map<unsigned long long,unsigned long long>::iterator itr;
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156 |
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157 | unsigned long long mean_clicks=0;
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158 |
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159 | for(itr=_counted_clicks.begin() ; itr!=_counted_clicks.end() ; itr++)
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160 | {
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161 |
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162 | mean_clicks+=(*itr).second*(*itr).first;
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163 | }
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164 |
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165 | return mean_clicks/double(_nb_sample);
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166 |
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167 | }
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168 |
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169 | double get_shortest_clicks( void ){
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170 |
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171 | return double((*_counted_clicks.begin()).first);
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172 |
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173 | }
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174 |
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175 | void fill_history_clicks( void ){
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176 |
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177 | _history_mean_clicks.push_back(get_mean_clicks());
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178 | _history_shortest_clicks.push_back(get_shortest_clicks());
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179 | _history_most_occured_clicks.push_back(get_most_occured_clicks());
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180 |
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181 | }
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182 |
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183 |
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184 | double get_most_occured_clicks( void ){
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185 |
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186 | unsigned long long moc=0;
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187 | unsigned long long max_occurence=0;
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188 |
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189 | std::map<unsigned long long,unsigned long long>::iterator itr;
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190 |
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191 | for(itr=_counted_clicks.begin() ; itr!=_counted_clicks.end() ; itr++)
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192 | {
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193 |
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194 | if (max_occurence<=(*itr).second){
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195 | max_occurence=(*itr).second;
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196 | moc=(*itr).first;
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197 | }
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198 | }
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199 |
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200 | return double(moc);
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201 |
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202 | }
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203 |
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204 | void clear( void )
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205 | {
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206 | _counted_clicks.clear();
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207 |
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208 | _history_mean_clicks.clear();
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209 | _history_shortest_clicks.clear();
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210 | _history_most_occured_clicks.clear();
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211 |
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212 | _nb_sample=0;
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213 | }
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214 |
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215 |
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216 |
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217 | private :
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218 |
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219 | union
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220 | {
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221 | unsigned long int n32[2] ;
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222 | unsigned long long n64 ;
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223 | } _click_start;
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224 |
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225 | union
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226 | {
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227 | unsigned long int n32[2] ;
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228 | unsigned long long n64 ;
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229 | } _click_stop;
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230 |
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231 | double _frequency ;
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232 |
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233 | map<unsigned long long,unsigned long long> _counted_clicks;
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234 |
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235 | vector<double> _history_mean_clicks;
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236 | vector<double> _history_shortest_clicks;
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237 | vector<double> _history_most_occured_clicks;
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238 |
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239 | unsigned long long _nb_sample;
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240 |
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241 |
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242 |
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243 | };
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244 |
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245 |
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246 | #endif
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