refine log and thread function name

@@ -686,13 +686,15 @@ int SrsConfig::parse_file(const char* filename)
     
     // check log
     std::string log_filename = this->get_srs_log_file();
-    if (this->get_srs_log_tank_file() && log_filename.empty()) {
+    if (get_srs_log_tank_file() && log_filename.empty()) {
         ret = ERROR_SYSTEM_CONFIG_INVALID;
         srs_error("must specifies the file to write log to. ret=%d", ret);
         return ret;
     }
-    if (!log_filename.empty()) {
+    if (get_srs_log_tank_file()) {
         srs_trace("log file is %s", log_filename.c_str());
+    } else {
+        srs_trace("write log to console");
     }
     
     return ret;

@@ -569,7 +569,7 @@ int SrsEncoder::cycle()
     return ret;
 }
 
-void SrsEncoder::on_leave_loop()
+void SrsEncoder::on_thread_stop()
 {
     // kill ffmpeg when finished and it alive
     std::vector<SrsFFMPEG*>::iterator it;

@@ -101,7 +101,7 @@ public:
 // interface ISrsThreadHandler.
 public:
     virtual int cycle();
-    virtual void on_leave_loop();
+    virtual void on_thread_stop();
 private:
     virtual void clear_engines();
     virtual SrsFFMPEG* at(int index);

@@ -126,7 +126,7 @@ int SrsListener::listen(int _port)
     return ret;
 }
 
-void SrsListener::on_enter_loop()
+void SrsListener::on_thread_start()
 {
     srs_trace("listen cycle start, port=%d, type=%d, fd=%d", port, type, fd);
 }

@@ -69,7 +69,7 @@ public:
     virtual int listen(int port);
 // interface ISrsThreadHandler.
 public:
-    virtual void on_enter_loop();
+    virtual void on_thread_start();
     virtual int cycle();
 };
 

@@ -34,7 +34,7 @@ ISrsThreadHandler::~ISrsThreadHandler()
 {
 }
 
-void ISrsThreadHandler::on_enter_loop()
+void ISrsThreadHandler::on_thread_start()
 {
 }
 
@@ -50,7 +50,7 @@ int ISrsThreadHandler::on_end_cycle()
     return ret;
 }
 
-void ISrsThreadHandler::on_leave_loop()
+void ISrsThreadHandler::on_thread_stop()
 {
 }
 
@@ -114,9 +114,9 @@ void SrsThread::thread_cycle()
     srs_assert(handler);
     
     _srs_context->generate_id();
-    srs_trace("thread cycle start");
+    srs_info("thread cycle start");
 
-    handler->on_end_cycle();
+    handler->on_thread_start();
     
     loop = true;
     while (loop) {
@@ -146,7 +146,7 @@ failed:
         st_usleep(cycle_interval_us);
     }
     
-    handler->on_leave_loop();
+    handler->on_thread_stop();
     srs_trace("thread cycle finished");
 }
 

@@ -34,14 +34,14 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 /**
 * the handler for the thread, callback interface.
 * the thread model defines as:
-*     handler->on_enter_loop()
+*     handler->on_thread_start()
 *     while loop:
 *        handler->on_before_cycle()
 *        handler->cycle()
 *        handler->on_end_cycle()
 *        if !loop then break for user stop thread.
 *        sleep(CycleIntervalMilliseconds)
-*     handler->on_leave_loop()
+*     handler->on_thread_stop()
 * when stop, the thread will interrupt the st_thread,
 * which will cause the socket to return error and 
 * terminate the cycle thread.
@@ -69,11 +69,11 @@ public:
     ISrsThreadHandler();
     virtual ~ISrsThreadHandler();
 public:
-    virtual void on_enter_loop();
+    virtual void on_thread_start();
     virtual int on_before_cycle();
     virtual int cycle() = 0;
     virtual int on_end_cycle();
-    virtual void on_leave_loop();
+    virtual void on_thread_stop();
 };
 
 /**

@@ -166,8 +166,8 @@ string srs_client_type_string(SrsRtmpConnType type)
 {
     switch (type) {
         case SrsRtmpConnPlay: return "Play";
-        case SrsRtmpConnFlashPublish: return "FlashPublish";
-        case SrsRtmpConnFMLEPublish: return "FMLEPublish";
+        case SrsRtmpConnFlashPublish: return "publish(FlashPublish)";
+        case SrsRtmpConnFMLEPublish: return "publish(FMLEPublish)";
         default: return "Unknown";
     }
     return "Unknown";