1 //=====================================================
2 // File   :  STL_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 _STL_PERF_ANALYSER_HH
21 #define _STL_PERF_ANALYSER_HH
22 
23 #include "STL_timer.hh"
24 #include "bench_parameter.hh"
25 
26 template<class ACTION>
27 class STL_Perf_Analyzer{
28 public:
STL_Perf_Analyzer(unsigned long long nb_sample=DEFAULT_NB_SAMPLE)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   };
STL_Perf_Analyzer(const STL_Perf_Analyzer &)33   STL_Perf_Analyzer( const STL_Perf_Analyzer & ){
34     INFOS("Copy Ctor not implemented");
35     exit(0);
36   };
~STL_Perf_Analyzer(void)37   ~STL_Perf_Analyzer( void ){
38     MESSAGE("STL_Perf_Analyzer Dtor");
39   };
40 
41 
eval_mflops(int size)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   }
72 private:
73 
74   STL_Timer _chronos;
75   unsigned long long _nb_sample;
76 
77 
78 };
79 
80 
81 
82 #endif
83