spot  0.8.3
timer.hh
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00001 // Copyright (C) 2009, 2011 Laboratoire de Recherche et Developpement
00002 // de l'Epita (LRDE).
00003 // Copyright (C) 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
00004 // département Systèmes Répartis Coopératifs (SRC), Université Pierre
00005 // et Marie Curie.
00006 //
00007 // This file is part of Spot, a model checking library.
00008 //
00009 // Spot is free software; you can redistribute it and/or modify it
00010 // under the terms of the GNU General Public License as published by
00011 // the Free Software Foundation; either version 2 of the License, or
00012 // (at your option) any later version.
00013 //
00014 // Spot is distributed in the hope that it will be useful, but WITHOUT
00015 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
00016 // or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
00017 // License for more details.
00018 //
00019 // You should have received a copy of the GNU General Public License
00020 // along with Spot; see the file COPYING.  If not, write to the Free
00021 // Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
00022 // 02111-1307, USA.
00023 
00024 #ifndef SPOT_MISC_TIMER_HH
00025 # define SPOT_MISC_TIMER_HH
00026 
00027 # include <cassert>
00028 # include <iosfwd>
00029 # include <string>
00030 # include <map>
00031 # include <sys/times.h>
00032 
00033 namespace spot
00034 {
00037 
00039   struct time_info
00040   {
00041     time_info()
00042       : utime(), stime(0)
00043     {
00044     }
00045     clock_t utime;
00046     clock_t stime;
00047   };
00048 
00050   class timer
00051   {
00052   public:
00053     timer()
00054       : running(false)
00055     {
00056     }
00057 
00059     void
00060     start()
00061     {
00062       assert(!running);
00063       running = true;
00064       struct tms tmp;
00065       times(&tmp);
00066       start_.utime = tmp.tms_utime;
00067       start_.stime = tmp.tms_stime;
00068     }
00069 
00071     void
00072     stop()
00073     {
00074       struct tms tmp;
00075       times(&tmp);
00076       total_.utime += tmp.tms_utime - start_.utime;
00077       total_.stime += tmp.tms_stime - start_.stime;
00078       assert(running);
00079       running = false;
00080     }
00081 
00086     clock_t
00087     utime() const
00088     {
00089       return total_.utime;
00090     }
00091 
00096     clock_t
00097     stime() const
00098     {
00099       return total_.stime;
00100     }
00101 
00102 
00104     bool
00105     is_running() const
00106     {
00107       return running;
00108     }
00109 
00110   protected:
00111     time_info start_;
00112     time_info total_;
00113     bool running;
00114   };
00115 
00120   class timer_map
00121   {
00122   public:
00123 
00129     void
00130     start(const std::string& name)
00131     {
00132       item_type& it = tm[name];
00133       it.first.start();
00134       ++it.second;
00135     }
00136 
00140     void
00141     stop(const std::string& name)
00142     {
00143       tm[name].first.stop();
00144     }
00145 
00153     void
00154     cancel(const std::string& name)
00155     {
00156       tm_type::iterator i = tm.find(name);
00157       assert(i != tm.end());
00158       assert(0 < i->second.second);
00159       if (0 == --i->second.second)
00160         tm.erase(i);
00161     }
00162 
00164     const spot::timer&
00165     timer(const std::string& name) const
00166     {
00167       tm_type::const_iterator i = tm.find(name);
00168       assert(i != tm.end());
00169       return i->second.first;
00170     }
00171 
00173     spot::timer&
00174     timer(const std::string& name)
00175     {
00176       return tm[name].first;
00177     }
00178 
00184     bool
00185     empty() const
00186     {
00187       return tm.empty();
00188     }
00189 
00191     std::ostream&
00192     print(std::ostream& os) const;
00193 
00195     void
00196     reset_all()
00197     {
00198       tm.clear();
00199     }
00200 
00201   protected:
00202     typedef std::pair<spot::timer, int> item_type;
00203     typedef std::map<std::string, item_type> tm_type;
00204     tm_type tm;
00205   };
00206 
00208 }
00209 
00210 #endif // SPOT_MISC_TIMER_HH

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