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Diffstat (limited to 'btl/generic_bench/timers/x86_timer.hh')
-rw-r--r--btl/generic_bench/timers/x86_timer.hh246
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
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--- /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