bencher.hxx

00001 // bencher.hxx: this file is part of the Vaucanson project.
00002 //
00003 // Vaucanson, a generic library for finite state machines.
00004 //
00005 // Copyright (C) 2004, 2005, 2007 The Vaucanson Group.
00006 //
00007 // This program is free software; you can redistribute it and/or
00008 // modify it under the terms of the GNU General Public License
00009 // as published by the Free Software Foundation; either version 2
00010 // of the License, or (at your option) any later version.
00011 //
00012 // The complete GNU General Public Licence Notice can be found as the
00013 // `COPYING' file in the root directory.
00014 //
00015 // The Vaucanson Group consists of people listed in the `AUTHORS' file.
00016 //
00017 #ifndef VCSN_TOOLS_BENCHER_HXX
00018 # define VCSN_TOOLS_BENCHER_HXX
00019 
00020 # include <vaucanson/tools/bencher.hh>
00021 
00022 # ifdef VCSN_BENCH
00023 
00024 namespace vcsn
00025 {
00026   namespace tools
00027   {
00028 
00029     bencher::bencher() : start_(0), stop_(0)
00030     {}
00031 
00032     bencher::~bencher()
00033     {}
00034 
00035     void bencher::start()
00036     {
00037       start_ = dtime();
00038     }
00039 
00040 
00041     void bencher::stop()
00042     {
00043       stop_ = dtime();
00044     }
00045 
00046 
00047     double bencher::get_time()
00048     {
00049       return stop_ - start_;
00050     }
00051 
00052     double bencher::dtime()
00053     {
00054       rusage rusage;
00055       getrusage(RUSAGE_SELF, &rusage);
00056       return ((double)(rusage.ru_utime.tv_sec)
00057           + (double)(rusage.ru_utime.tv_usec) * 1.0e-06);
00058     }
00059 
00060   }
00061 }
00062 # endif // ! VCSN_BENCH
00063 #endif // ! VCSN_TOOLS_BENCHER_HXX

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