added option for session statistics output

Jamfile

@@ -37,6 +37,9 @@ feature.compose <resolve-countries>off : <define>TORRENT_DISABLE_RESOLVE_COUNTRI
 feature character-set : ansi unicode : composite propagated link-incompatible ;
 feature.compose <character-set>unicode : <define>_UNICODE <define>UNICODE ;
 
+feature statistics : on off : composite propagated link-incompatible ;
+feature.compose <statistics>on : <define>TORRENT_STATS ;
+
 SOURCES =
 	allocate_resources
 	alert

include/libtorrent/aux_/session_impl.hpp

@@ -429,6 +429,12 @@ namespace libtorrent
 #ifndef NDEBUG
 			void check_invariant(const char *place = 0);
 #endif
+
+#ifdef TORRENT_STATS
+			// logger used to write bandwidth usage statistics
+			std::ofstream m_stats_logger;
+			int m_second_counter;
+#endif
 #if defined(TORRENT_VERBOSE_LOGGING) || defined(TORRENT_LOGGING)
 			boost::shared_ptr<logger> create_log(std::string const& name
 				, int instance, bool append = true);
@@ -437,10 +443,6 @@ namespace libtorrent
 			// shutting down. This list is just here to keep them alive during
 			// whe shutting down process
 			std::list<boost::shared_ptr<tracker_logger> > m_tracker_loggers;
-			
-			// logger used to write bandwidth usage statistics
-			boost::shared_ptr<logger> m_stats_logger;
-			int m_second_counter;
 
 		public:
 			boost::shared_ptr<logger> m_logger;

include/libtorrent/debug.hpp

@@ -52,17 +52,6 @@ POSSIBILITY OF SUCH DAMAGE.
 
 namespace libtorrent
 {
-
-	// PROFILING CODE
-#ifdef TORRENT_PROFILE
-
-	void add_checkpoint(std::string const& str);
-	void print_checkpoints();
-#define TORRENT_CHECKPOINT(str) libtorrent::add_checkpoint(str)
-#else
-#define TORRENT_CHECKPOINT(str) void(0)
-#endif
-
 	// DEBUG API
 
 	struct logger

include/libtorrent/session.hpp

@@ -178,9 +178,7 @@ namespace libtorrent
 #endif
 
 #ifndef TORRENT_DISABLE_EXTENSIONS
-
 		void add_extension(boost::function<boost::shared_ptr<torrent_plugin>(torrent*)> ext);
-
 #endif
 
 		void set_ip_filter(ip_filter const& f);

src/session_impl.cpp

@@ -510,17 +510,23 @@ namespace libtorrent { namespace detail
 		m_logger = create_log("main_session", listen_port(), false);
 		(*m_logger) << time_now_string() << "\n";
 		
-		m_stats_logger = create_log("session_stats", listen_port(), false);
-		(*m_stats_logger) <<
-			"1. second\n"
-			"2. hard upload quota\n"
-			"3. hard download quota\n"
-			"\n";
-		m_second_counter = 0;
 		m_dl_bandwidth_manager.m_ses = this;
 		m_ul_bandwidth_manager.m_ses = this;
 #endif
 
+#ifdef TORRENT_STATS
+		m_stats_logger.open("session_stats");
+		m_stats_logger <<
+			"1. second\n"
+			"2. upload rate\n"
+			"3. download rate\n"
+			"4. downloading torrents\n"
+			"5. seeding torrents\n"
+			"6. peers\n"
+			"\n";
+		m_second_counter = 0;
+#endif
+
 		// ---- generate a peer id ----
 		static seed_random_generator seeder;
 
@@ -846,6 +852,29 @@ namespace libtorrent { namespace detail
 		m_timer.expires_from_now(seconds(1));
 		m_timer.async_wait(m_strand.wrap(
 			bind(&session_impl::second_tick, this, _1)));
+
+#ifdef TORRENT_STATS
+		++m_second_counter;
+		int downloading_torrents = 0;
+		int seeding_torrents = 0;
+		for (torrent_map::iterator i = m_torrents.begin()
+			, end(m_torrents.end()); i != end; ++i)
+		{
+			if (i->second->is_seed())
+				++seeding_torrents;
+			else
+				++downloading_torrents;
+		}
+		m_stats_logger
+			<< m_second_counter << "\t"
+			<< m_stat.upload_rate() << "\t"
+			<< m_stat.download_rate() << "\t"
+			<< downloading_torrents << "\t"
+			<< seeding_torrents << "\t"
+			<< m_connections.size() << "\t"
+			"\n";
+#endif
+
 	
 		// let torrents connect to peers if they want to
 		// if there are any torrents and any free slots