1//=====================================================
2// File   :  x86_perf_analyzer.hh
3// Author :  L. Plagne <laurent.plagne@edf.fr)>
4// Copyright (C) EDF R&D,  mar d�c 3 18:59:35 CET 2002
5//=====================================================
6//
7// This program is free software; you can redistribute it and/or
8// modify it under the terms of the GNU General Public License
9// as published by the Free Software Foundation; either version 2
10// of the License, or (at your option) any later version.
11//
12// This program is distributed in the hope that it will be useful,
13// but WITHOUT ANY WARRANTY; without even the implied warranty of
14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15// GNU General Public License for more details.
16// You should have received a copy of the GNU General Public License
17// along with this program; if not, write to the Free Software
18// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19//
20#ifndef _X86_PERF_ANALYSER_HH
21#define _X86_PERF_ANALYSER_HH
22
23#include "x86_timer.hh"
24#include "bench_parameter.hh"
25
26template<class ACTION>
27class X86_Perf_Analyzer{
28public:
29  X86_Perf_Analyzer( unsigned long long nb_sample=DEFAULT_NB_SAMPLE):_nb_sample(nb_sample),_chronos()
30  {
31    MESSAGE("X86_Perf_Analyzer Ctor");
32    _chronos.find_frequency();
33  };
34  X86_Perf_Analyzer( const X86_Perf_Analyzer & ){
35    INFOS("Copy Ctor not implemented");
36    exit(0);
37  };
38  ~X86_Perf_Analyzer( void ){
39    MESSAGE("X86_Perf_Analyzer Dtor");
40  };
41
42
43  inline double eval_mflops(int size)
44  {
45
46    ACTION action(size);
47
48    int nb_loop=5;
49    double calculate_time=0.0;
50    double baseline_time=0.0;
51
52    for (int j=0 ; j < nb_loop ; j++){
53
54      _chronos.clear();
55
56      for(int i=0 ; i < _nb_sample  ; i++)
57      {
58        _chronos.start();
59        action.initialize();
60        action.calculate();
61        _chronos.stop();
62        _chronos.add_get_click();
63      }
64
65      calculate_time += double(_chronos.get_shortest_clicks())/_chronos.frequency();
66
67      if (j==0) action.check_result();
68
69      _chronos.clear();
70
71      for(int i=0 ; i < _nb_sample  ; i++)
72      {
73        _chronos.start();
74        action.initialize();
75        _chronos.stop();
76        _chronos.add_get_click();
77
78      }
79
80      baseline_time+=double(_chronos.get_shortest_clicks())/_chronos.frequency();
81
82    }
83
84    double corrected_time = (calculate_time-baseline_time)/double(nb_loop);
85
86
87//     INFOS("_nb_sample="<<_nb_sample);
88//     INFOS("baseline_time="<<baseline_time);
89//     INFOS("calculate_time="<<calculate_time);
90//     INFOS("corrected_time="<<corrected_time);
91
92//    cout << size <<" "<<baseline_time<<" "<<calculate_time<<" "<<corrected_time<<" "<<action.nb_op_base() << endl;
93
94    return action.nb_op_base()/(corrected_time*1000000.0);
95    //return action.nb_op_base()/(calculate_time*1000000.0);
96  }
97
98private:
99
100  X86_Timer _chronos;
101  unsigned long long _nb_sample;
102
103
104};
105
106
107
108#endif
109