1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
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
|
