* logger: print also thread id

Log.cpp

@@ -92,22 +92,32 @@ namespace log {
 	 */
 	void Log::Process() {
 		std::unique_lock<std::mutex> l(m_OutputLock);
+		std::hash<std::thread::id> hasher;
+		unsigned short short_tid;
 		while (1) {
 			auto msg = m_Queue.GetNextWithTimeout (1);
 			if (!msg)
 				break;
+			short_tid = (short) (hasher(msg->tid) % 1000);
 			switch (m_Destination) {
 #ifndef _WIN32
 				case eLogSyslog:
-					syslog(GetSyslogPrio(msg->level), "%s", msg->text.c_str());
+					syslog(GetSyslogPrio(msg->level), "[%03u] %s", short_tid, msg->text.c_str());
 					break;
 #endif
 				case eLogFile:
 				case eLogStream:
-					*m_LogStream << TimeAsString(msg->timestamp) << "/" << g_LogLevelStr[msg->level] << " - " << msg->text << std::endl;
+					*m_LogStream << TimeAsString(msg->timestamp)
+						<< "@" << short_tid
+						<< "/" << g_LogLevelStr[msg->level]
+						<< " - " << msg->text << std::endl;
 					break;
+				case eLogStdout:
 				default:
-					std::cout    << TimeAsString(msg->timestamp) << "/" << g_LogLevelStr[msg->level] << " - " << msg->text << std::endl;
+					std::cout    << TimeAsString(msg->timestamp)
+						<< "@" << short_tid
+						<< "/" << g_LogLevelStr[msg->level]
+						<< " - " << msg->text << std::endl;
 					break;
 			} // switch
 		} // while

Log.h

@@ -138,8 +138,9 @@ namespace log {
 		std::time_t timestamp;
 		std::string text; /**< message text as single string */
 		LogLevel level;   /**< message level */
+		std::thread::id tid; /**< id of thread that generated message */
 
-		LogMsg (LogLevel lvl, std::time_t ts, const std::string & txt): timestamp(ts), text(txt), level(lvl) {};
+		LogMsg (LogLevel lvl, std::time_t ts, const std::string & txt): timestamp(ts), text(txt), level(lvl), tid(0) {};
 	};
 
 	Log & Logger();
@@ -178,6 +179,7 @@ void LogPrint (LogLevel level, TArgs... args)
 	LogPrint (ss, args ...);
 
 	auto msg = std::make_shared<i2p::log::LogMsg>(level, std::time(nullptr), ss.str());
+	msg->tid = std::this_thread::get_id();
 	log.Append(msg);
 }