1//=====================================================
2// File   :  STL_perf_analyzer.hh
3// Author :  L. Plagne <laurent.plagne@edf.fr)>
4// Copyright (C) EDF R&D,  mar déc 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 _STL_PERF_ANALYSER_HH
21#define _STL_PERF_ANALYSER_HH
22
23#include "STL_timer.hh"
24#include "bench_parameter.hh"
25
26template<class ACTION>
27class STL_Perf_Analyzer{
28public:
29  STL_Perf_Analyzer(unsigned long long nb_sample=DEFAULT_NB_SAMPLE):_nb_sample(nb_sample),_chronos()
30  {
31    MESSAGE("STL_Perf_Analyzer Ctor");
32  };
33  STL_Perf_Analyzer( const STL_Perf_Analyzer & ){
34    INFOS("Copy Ctor not implemented");
35    exit(0);
36  };
37  ~STL_Perf_Analyzer( void ){
38    MESSAGE("STL_Perf_Analyzer Dtor");
39  };
40
41
42  inline double eval_mflops(int size)
43  {
44
45    ACTION action(size);
46
47    _chronos.start_baseline(_nb_sample);
48
49    do {
50
51      action.initialize();
52    } while (_chronos.check());
53
54    double baseline_time=_chronos.get_time();
55
56    _chronos.start(_nb_sample);
57    do {
58      action.initialize();
59      action.calculate();
60    } while (_chronos.check());
61
62    double calculate_time=_chronos.get_time();
63
64    double corrected_time=calculate_time-baseline_time;
65
66    //    cout << size <<" "<<baseline_time<<" "<<calculate_time<<" "<<corrected_time<<" "<<action.nb_op_base() << endl;
67
68    return action.nb_op_base()/(corrected_time*1000000.0);
69    //return action.nb_op_base()/(calculate_time*1000000.0);
70
71  }
72private:
73
74  STL_Timer _chronos;
75  unsigned long long _nb_sample;
76
77
78};
79
80
81
82#endif
83