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Diffstat (limited to 'btl/generic_bench/timers/x86_timer.hh')
| -rw-r--r-- | btl/generic_bench/timers/x86_timer.hh | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/btl/generic_bench/timers/x86_timer.hh b/btl/generic_bench/timers/x86_timer.hh new file mode 100644 index 0000000..cfb5ee8 --- /dev/null +++ b/btl/generic_bench/timers/x86_timer.hh @@ -0,0 +1,246 @@ +//===================================================== +// File : x86_timer.hh +// Author : L. Plagne <laurent.plagne@edf.fr)> +// Copyright (C) EDF R&D, mar d�c 3 18:59:35 CET 2002 +//===================================================== +// +// This program 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; either version 2 +// of the License, or (at your option) any later version. +// +// This program 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. See the +// GNU General Public License for more details. +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +#ifndef _X86_TIMER_HH +#define _X86_TIMER_HH + +#include <sys/time.h> +#include <sys/resource.h> +#include <unistd.h> +#include <sys/times.h> +//#include "system_time.h" +#define u32 unsigned int +#include <asm/msr.h> +#include "utilities.h" +#include <map> +#include <fstream> +#include <string> +#include <iostream> + +// frequence de la becanne en Hz +//#define FREQUENCY 648000000 +//#define FREQUENCY 1400000000 +#define FREQUENCY 1695000000 + +using namespace std; + + +class X86_Timer { + +public : + + X86_Timer( void ):_frequency(FREQUENCY),_nb_sample(0) + { + MESSAGE("X86_Timer Default Ctor"); + } + + inline void start( void ){ + + rdtsc(_click_start.n32[0],_click_start.n32[1]); + + } + + + inline void stop( void ){ + + rdtsc(_click_stop.n32[0],_click_stop.n32[1]); + + } + + + inline double frequency( void ){ + return _frequency; + } + + double get_elapsed_time_in_second( void ){ + + return (_click_stop.n64-_click_start.n64)/double(FREQUENCY); + + + } + + unsigned long long get_click( void ){ + + return (_click_stop.n64-_click_start.n64); + + } + + inline void find_frequency( void ){ + + time_t initial, final; + int dummy=2; + + initial = time(0); + start(); + do { + dummy+=2; + } + while(time(0)==initial); + // On est au debut d'un cycle d'une seconde !!! + initial = time(0); + start(); + do { + dummy+=2; + } + while(time(0)==initial); + final=time(0); + stop(); + // INFOS("fine grained time : "<< get_elapsed_time_in_second()); + // INFOS("coarse grained time : "<< final-initial); + _frequency=_frequency*get_elapsed_time_in_second()/double(final-initial); + /// INFOS("CPU frequency : "<< _frequency); + + } + + void add_get_click( void ){ + + _nb_sample++; + _counted_clicks[get_click()]++; + fill_history_clicks(); + + } + + void dump_statistics(string filemane){ + + ofstream outfile (filemane.c_str(),ios::out) ; + + std::map<unsigned long long , unsigned long long>::iterator itr; + for(itr=_counted_clicks.begin() ; itr!=_counted_clicks.end() ; itr++) + { + outfile << (*itr).first << " " << (*itr).second << endl ; + } + + outfile.close(); + + } + + void dump_history(string filemane){ + + ofstream outfile (filemane.c_str(),ios::out) ; + + + + for(int i=0 ; i<_history_mean_clicks.size() ; i++) + { + outfile << i << " " + << _history_mean_clicks[i] << " " + << _history_shortest_clicks[i] << " " + << _history_most_occured_clicks[i] << endl ; + } + + outfile.close(); + + } + + + + double get_mean_clicks( void ){ + + std::map<unsigned long long,unsigned long long>::iterator itr; + + unsigned long long mean_clicks=0; + + for(itr=_counted_clicks.begin() ; itr!=_counted_clicks.end() ; itr++) + { + + mean_clicks+=(*itr).second*(*itr).first; + } + + return mean_clicks/double(_nb_sample); + + } + + double get_shortest_clicks( void ){ + + return double((*_counted_clicks.begin()).first); + + } + + void fill_history_clicks( void ){ + + _history_mean_clicks.push_back(get_mean_clicks()); + _history_shortest_clicks.push_back(get_shortest_clicks()); + _history_most_occured_clicks.push_back(get_most_occured_clicks()); + + } + + + double get_most_occured_clicks( void ){ + + unsigned long long moc=0; + unsigned long long max_occurence=0; + + std::map<unsigned long long,unsigned long long>::iterator itr; + + for(itr=_counted_clicks.begin() ; itr!=_counted_clicks.end() ; itr++) + { + + if (max_occurence<=(*itr).second){ + max_occurence=(*itr).second; + moc=(*itr).first; + } + } + + return double(moc); + + } + + void clear( void ) + { + _counted_clicks.clear(); + + _history_mean_clicks.clear(); + _history_shortest_clicks.clear(); + _history_most_occured_clicks.clear(); + + _nb_sample=0; + } + + + +private : + + union + { + unsigned long int n32[2] ; + unsigned long long n64 ; + } _click_start; + + union + { + unsigned long int n32[2] ; + unsigned long long n64 ; + } _click_stop; + + double _frequency ; + + map<unsigned long long,unsigned long long> _counted_clicks; + + vector<double> _history_mean_clicks; + vector<double> _history_shortest_clicks; + vector<double> _history_most_occured_clicks; + + unsigned long long _nb_sample; + + + +}; + + +#endif |