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# 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