refine the thread to three category.

@@ -41,12 +41,11 @@ ISrsAsyncCallTask::~ISrsAsyncCallTask()
 
 
 SrsAsyncCallWorker::SrsAsyncCallWorker()
 SrsAsyncCallWorker::SrsAsyncCallWorker()
 {
 {
-    pthread = new SrsThread("async", this, SRS_AUTO_ASYNC_CALLBACL_SLEEP_US, true);
+    pthread = new SrsReusableThread("async", this, SRS_AUTO_ASYNC_CALLBACL_SLEEP_US);
 }
 }
 
 
 SrsAsyncCallWorker::~SrsAsyncCallWorker()
 SrsAsyncCallWorker::~SrsAsyncCallWorker()
 {
 {
-    stop();
     srs_freep(pthread);
     srs_freep(pthread);
 
 
     std::vector<ISrsAsyncCallTask*>::iterator it;
     std::vector<ISrsAsyncCallTask*>::iterator it;

@@ -57,10 +57,10 @@ public:
  * when worker call with the task, the worker will do it in isolate thread.
  * when worker call with the task, the worker will do it in isolate thread.
  * that is, the task is execute/call in async mode.
  * that is, the task is execute/call in async mode.
  */
  */
-class SrsAsyncCallWorker : public ISrsThreadHandler
+class SrsAsyncCallWorker : public ISrsReusableThreadHandler
 {
 {
 private:
 private:
-    SrsThread* pthread;
+    SrsReusableThread* pthread;
     std::vector<ISrsAsyncCallTask*> tasks;
     std::vector<ISrsAsyncCallTask*> tasks;
 public:
 public:
     SrsAsyncCallWorker();
     SrsAsyncCallWorker();
@@ -70,6 +70,8 @@ public:
 public:
 public:
     virtual int start();
     virtual int start();
     virtual void stop();
     virtual void stop();
+// interface ISrsReusableThreadHandler
+public:
     virtual int cycle();
     virtual int cycle();
 };
 };
 
 

@@ -45,12 +45,17 @@ SrsConnection::SrsConnection(IConnectionManager* cm, st_netfd_t c)
     // so we never use joinable.
     // so we never use joinable.
     // TODO: FIXME: maybe other thread need to stop it.
     // TODO: FIXME: maybe other thread need to stop it.
     // @see: https://github.com/simple-rtmp-server/srs/issues/78
     // @see: https://github.com/simple-rtmp-server/srs/issues/78
-    pthread = new SrsThread("conn", this, 0, false);
+    pthread = new SrsOneCycleThread("conn", this);
 }
 }
 
 
 SrsConnection::~SrsConnection()
 SrsConnection::~SrsConnection()
 {
 {
-    stop();
+    /**
+     * when delete the connection, stop the connection,
+     * close the underlayer socket, delete the thread.
+     */
+    srs_close_stfd(stfd);
+    srs_freep(pthread);
 }
 }
 
 
 int SrsConnection::start()
 int SrsConnection::start()
@@ -83,9 +88,6 @@ int SrsConnection::cycle()
     if (ret == ERROR_SOCKET_CLOSED) {
     if (ret == ERROR_SOCKET_CLOSED) {
         srs_warn("client disconnect peer. ret=%d", ret);
         srs_warn("client disconnect peer. ret=%d", ret);
     }
     }
-    
-    // set loop to stop to quit.
-    pthread->stop_loop();
 
 
     return ERROR_SUCCESS;
     return ERROR_SUCCESS;
 }
 }
@@ -101,10 +103,4 @@ int SrsConnection::srs_id()
     return id;
     return id;
 }
 }
 
 
-void SrsConnection::stop()
-{
-    srs_close_stfd(stfd);
-    srs_freep(pthread);
-}
-
 
 

@@ -58,14 +58,14 @@ public:
 * all connections accept from listener must extends from this base class,
 * all connections accept from listener must extends from this base class,
 * server will add the connection to manager, and delete it when remove.
 * server will add the connection to manager, and delete it when remove.
 */
 */
-class SrsConnection : public virtual ISrsThreadHandler, public virtual IKbpsDelta
+class SrsConnection : public virtual ISrsOneCycleThreadHandler, public virtual IKbpsDelta
 {
 {
 private:
 private:
     /**
     /**
     * each connection start a green thread,
     * each connection start a green thread,
     * when thread stop, the connection will be delete by server.
     * when thread stop, the connection will be delete by server.
     */
     */
-    SrsThread* pthread;
+    SrsOneCycleThread* pthread;
     /**
     /**
     * the id of connection.
     * the id of connection.
     */
     */
@@ -97,6 +97,8 @@ public:
     * to remove the client by server->remove(this).
     * to remove the client by server->remove(this).
     */
     */
     virtual int start();
     virtual int start();
+// interface ISrsOneCycleThreadHandler
+public:
     /**
     /**
     * the thread cycle function,
     * the thread cycle function,
     * when serve connection completed, terminate the loop which will terminate the thread,
     * when serve connection completed, terminate the loop which will terminate the thread,
@@ -119,12 +121,6 @@ protected:
     * for concrete connection to do the cycle.
     * for concrete connection to do the cycle.
     */
     */
     virtual int do_cycle() = 0;
     virtual int do_cycle() = 0;
-private:
-    /**
-    * when delete the connection, stop the connection,
-    * close the underlayer socket, delete the thread.
-    */
-    virtual void stop();
 };
 };
 
 
 #endif
 #endif

@@ -70,7 +70,7 @@ SrsEdgeIngester::SrsEdgeIngester()
     origin_index = 0;
     origin_index = 0;
     stream_id = 0;
     stream_id = 0;
     stfd = NULL;
     stfd = NULL;
-    pthread = new SrsThread("edge-igs", this, SRS_EDGE_INGESTER_SLEEP_US, true);
+    pthread = new SrsReusableThread("edge-igs", this, SRS_EDGE_INGESTER_SLEEP_US);
 }
 }
 
 
 SrsEdgeIngester::~SrsEdgeIngester()
 SrsEdgeIngester::~SrsEdgeIngester()
@@ -171,7 +171,7 @@ int SrsEdgeIngester::ingest()
     SrsPithyPrint* pprint = SrsPithyPrint::create_edge();
     SrsPithyPrint* pprint = SrsPithyPrint::create_edge();
     SrsAutoFree(SrsPithyPrint, pprint);
     SrsAutoFree(SrsPithyPrint, pprint);
 
 
-    while (pthread->can_loop()) {
+    while (!pthread->interrupted()) {
         pprint->elapse();
         pprint->elapse();
         
         
         // pithy print
         // pithy print
@@ -397,7 +397,7 @@ SrsEdgeForwarder::SrsEdgeForwarder()
     origin_index = 0;
     origin_index = 0;
     stream_id = 0;
     stream_id = 0;
     stfd = NULL;
     stfd = NULL;
-    pthread = new SrsThread("edge-fwr", this, SRS_EDGE_FORWARDER_SLEEP_US, true);
+    pthread = new SrsReusableThread("edge-fwr", this, SRS_EDGE_FORWARDER_SLEEP_US);
     queue = new SrsMessageQueue();
     queue = new SrsMessageQueue();
     send_error_code = ERROR_SUCCESS;
     send_error_code = ERROR_SUCCESS;
 }
 }
@@ -489,7 +489,7 @@ int SrsEdgeForwarder::cycle()
     
     
     SrsMessageArray msgs(SYS_MAX_EDGE_SEND_MSGS);
     SrsMessageArray msgs(SYS_MAX_EDGE_SEND_MSGS);
 
 
-    while (pthread->can_loop()) {
+    while (!pthread->interrupted()) {
         if (send_error_code != ERROR_SUCCESS) {
         if (send_error_code != ERROR_SUCCESS) {
             st_usleep(SRS_EDGE_FORWARDER_ERROR_US);
             st_usleep(SRS_EDGE_FORWARDER_ERROR_US);
             continue;
             continue;

@@ -75,7 +75,7 @@ enum SrsEdgeUserState
 /**
 /**
 * edge used to ingest stream from origin.
 * edge used to ingest stream from origin.
 */
 */
-class SrsEdgeIngester : public ISrsThreadHandler
+class SrsEdgeIngester : public ISrsReusableThreadHandler
 {
 {
 private:
 private:
     int stream_id;
     int stream_id;
@@ -83,7 +83,7 @@ private:
     SrsSource* _source;
     SrsSource* _source;
     SrsPlayEdge* _edge;
     SrsPlayEdge* _edge;
     SrsRequest* _req;
     SrsRequest* _req;
-    SrsThread* pthread;
+    SrsReusableThread* pthread;
     st_netfd_t stfd;
     st_netfd_t stfd;
     ISrsProtocolReaderWriter* io;
     ISrsProtocolReaderWriter* io;
     SrsKbps* kbps;
     SrsKbps* kbps;
@@ -96,7 +96,7 @@ public:
     virtual int initialize(SrsSource* source, SrsPlayEdge* edge, SrsRequest* req);
     virtual int initialize(SrsSource* source, SrsPlayEdge* edge, SrsRequest* req);
     virtual int start();
     virtual int start();
     virtual void stop();
     virtual void stop();
-// interface ISrsThreadHandler
+// interface ISrsReusableThreadHandler
 public:
 public:
     virtual int cycle();
     virtual int cycle();
 private:
 private:
@@ -110,7 +110,7 @@ private:
 /**
 /**
 * edge used to forward stream to origin.
 * edge used to forward stream to origin.
 */
 */
-class SrsEdgeForwarder : public ISrsThreadHandler
+class SrsEdgeForwarder : public ISrsReusableThreadHandler
 {
 {
 private:
 private:
     int stream_id;
     int stream_id;
@@ -118,7 +118,7 @@ private:
     SrsSource* _source;
     SrsSource* _source;
     SrsPublishEdge* _edge;
     SrsPublishEdge* _edge;
     SrsRequest* _req;
     SrsRequest* _req;
-    SrsThread* pthread;
+    SrsReusableThread* pthread;
     st_netfd_t stfd;
     st_netfd_t stfd;
     ISrsProtocolReaderWriter* io;
     ISrsProtocolReaderWriter* io;
     SrsKbps* kbps;
     SrsKbps* kbps;
@@ -144,7 +144,7 @@ public:
     virtual int initialize(SrsSource* source, SrsPublishEdge* edge, SrsRequest* req);
     virtual int initialize(SrsSource* source, SrsPublishEdge* edge, SrsRequest* req);
     virtual int start();
     virtual int start();
     virtual void stop();
     virtual void stop();
-// interface ISrsThreadHandler
+// interface ISrsReusableThreadHandler
 public:
 public:
     virtual int cycle();
     virtual int cycle();
 public:
 public:

@@ -44,7 +44,7 @@ static std::vector<std::string> _transcoded_url;
 
 
 SrsEncoder::SrsEncoder()
 SrsEncoder::SrsEncoder()
 {
 {
-    pthread = new SrsThread("encoder", this, SRS_RTMP_ENCODER_SLEEP_US, true);
+    pthread = new SrsReusableThread("encoder", this, SRS_RTMP_ENCODER_SLEEP_US);
     pprint = SrsPithyPrint::create_encoder();
     pprint = SrsPithyPrint::create_encoder();
 }
 }
 
 

@@ -45,13 +45,13 @@ class SrsFFMPEG;
 * the encoder for a stream,
 * the encoder for a stream,
 * may use multiple ffmpegs to transcode the specified stream.
 * may use multiple ffmpegs to transcode the specified stream.
 */
 */
-class SrsEncoder : public ISrsThreadHandler
+class SrsEncoder : public ISrsReusableThreadHandler
 {
 {
 private:
 private:
     std::string input_stream_name;
     std::string input_stream_name;
     std::vector<SrsFFMPEG*> ffmpegs;
     std::vector<SrsFFMPEG*> ffmpegs;
 private:
 private:
-    SrsThread* pthread;
+    SrsReusableThread* pthread;
     SrsPithyPrint* pprint;
     SrsPithyPrint* pprint;
 public:
 public:
     SrsEncoder();
     SrsEncoder();
@@ -59,7 +59,7 @@ public:
 public:
 public:
     virtual int on_publish(SrsRequest* req);
     virtual int on_publish(SrsRequest* req);
     virtual void on_unpublish();
     virtual void on_unpublish();
-// interface ISrsThreadHandler.
+// interface ISrsReusableThreadHandler.
 public:
 public:
     virtual int cycle();
     virtual int cycle();
     virtual void on_thread_stop();
     virtual void on_thread_stop();

@@ -59,7 +59,7 @@ SrsForwarder::SrsForwarder(SrsSource* _source)
     kbps = new SrsKbps();
     kbps = new SrsKbps();
     stream_id = 0;
     stream_id = 0;
 
 
-    pthread = new SrsThread("forward", this, SRS_FORWARDER_SLEEP_US, true);
+    pthread = new SrsReusableThread("forward", this, SRS_FORWARDER_SLEEP_US);
     queue = new SrsMessageQueue();
     queue = new SrsMessageQueue();
     jitter = new SrsRtmpJitter();
     jitter = new SrsRtmpJitter();
     
     
@@ -407,7 +407,7 @@ int SrsForwarder::forward()
         }
         }
     }
     }
     
     
-    while (pthread->can_loop()) {
+    while (!pthread->interrupted()) {
         pprint->elapse();
         pprint->elapse();
 
 
         // read from client.
         // read from client.

@@ -48,7 +48,7 @@ class SrsKbps;
 * forward the stream to other servers.
 * forward the stream to other servers.
 */
 */
 // TODO: FIXME: refine the error log, comments it.
 // TODO: FIXME: refine the error log, comments it.
-class SrsForwarder : public ISrsThreadHandler
+class SrsForwarder : public ISrsReusableThreadHandler
 {
 {
 private:
 private:
     // the ep to forward, server[:port].
     // the ep to forward, server[:port].
@@ -57,7 +57,7 @@ private:
     int stream_id;
     int stream_id;
 private:
 private:
     st_netfd_t stfd;
     st_netfd_t stfd;
-    SrsThread* pthread;
+    SrsReusableThread* pthread;
 private:
 private:
     SrsSource* source;
     SrsSource* source;
     ISrsProtocolReaderWriter* io;
     ISrsProtocolReaderWriter* io;
@@ -95,7 +95,7 @@ public:
     * @param shared_video, directly ptr, copy it if need to save it.
     * @param shared_video, directly ptr, copy it if need to save it.
     */
     */
     virtual int on_video(SrsSharedPtrMessage* shared_video);
     virtual int on_video(SrsSharedPtrMessage* shared_video);
-// interface ISrsThreadHandler.
+// interface ISrsReusableThreadHandler.
 public:
 public:
     virtual int cycle();
     virtual int cycle();
 private:
 private:

@@ -1157,12 +1157,11 @@ SrsStreamCache::SrsStreamCache(SrsSource* s, SrsRequest* r)
     req = r->copy();
     req = r->copy();
     source = s;
     source = s;
     queue = new SrsMessageQueue(true);
     queue = new SrsMessageQueue(true);
-    pthread = new SrsThread("http-stream", this, 0, false);
+    pthread = new SrsEndlessThread("http-stream", this);
 }
 }
 
 
 SrsStreamCache::~SrsStreamCache()
 SrsStreamCache::~SrsStreamCache()
 {
 {
-    pthread->stop();
     srs_freep(pthread);
     srs_freep(pthread);
     
     
     srs_freep(queue);
     srs_freep(queue);

@@ -386,20 +386,20 @@ protected:
 * for example, the audio stream cache to make android(weixin) happy.
 * for example, the audio stream cache to make android(weixin) happy.
 * we start a thread to shrink the queue.
 * we start a thread to shrink the queue.
 */
 */
-class SrsStreamCache : public ISrsThreadHandler
+class SrsStreamCache : public ISrsEndlessThreadHandler
 {
 {
 private:
 private:
     SrsMessageQueue* queue;
     SrsMessageQueue* queue;
     SrsSource* source;
     SrsSource* source;
     SrsRequest* req;
     SrsRequest* req;
-    SrsThread* pthread;
+    SrsEndlessThread* pthread;
 public:
 public:
     SrsStreamCache(SrsSource* s, SrsRequest* r);
     SrsStreamCache(SrsSource* s, SrsRequest* r);
     virtual ~SrsStreamCache();
     virtual ~SrsStreamCache();
 public:
 public:
     virtual int start();
     virtual int start();
     virtual int dump_cache(SrsConsumer* consumer);
     virtual int dump_cache(SrsConsumer* consumer);
-// interface ISrsThreadHandler.
+// interface ISrsEndlessThreadHandler.
 public:
 public:
     virtual int cycle();
     virtual int cycle();
 };
 };
@@ -669,7 +669,7 @@ public:
     virtual int hls_update_m3u8(SrsRequest* r, std::string m3u8);
     virtual int hls_update_m3u8(SrsRequest* r, std::string m3u8);
     virtual int hls_update_ts(SrsRequest* r, std::string uri, std::string ts);
     virtual int hls_update_ts(SrsRequest* r, std::string uri, std::string ts);
     virtual void unmount_hls(SrsRequest* r);
     virtual void unmount_hls(SrsRequest* r);
-// interface ISrsThreadHandler.
+// interface ISrsReloadHandler.
 public:
 public:
     virtual int on_reload_vhost_http_updated();
     virtual int on_reload_vhost_http_updated();
     virtual int on_reload_vhost_http_remux_updated();
     virtual int on_reload_vhost_http_remux_updated();

@@ -55,7 +55,7 @@ SrsIngester::SrsIngester()
 {
 {
     _srs_config->subscribe(this);
     _srs_config->subscribe(this);
     
     
-    pthread = new SrsThread("ingest", this, SRS_AUTO_INGESTER_SLEEP_US, true);
+    pthread = new SrsReusableThread("ingest", this, SRS_AUTO_INGESTER_SLEEP_US);
     pprint = SrsPithyPrint::create_ingester();
     pprint = SrsPithyPrint::create_ingester();
 }
 }
 
 

@@ -59,12 +59,12 @@ public:
 * encode with FFMPEG(optional),
 * encode with FFMPEG(optional),
 * push to SRS(or any RTMP server) over RTMP.
 * push to SRS(or any RTMP server) over RTMP.
 */
 */
-class SrsIngester : public ISrsThreadHandler, public ISrsReloadHandler
+class SrsIngester : public ISrsReusableThreadHandler, public ISrsReloadHandler
 {
 {
 private:
 private:
     std::vector<SrsIngesterFFMPEG*> ingesters;
     std::vector<SrsIngesterFFMPEG*> ingesters;
 private:
 private:
-    SrsThread* pthread;
+    SrsReusableThread* pthread;
     SrsPithyPrint* pprint;
     SrsPithyPrint* pprint;
 public:
 public:
     SrsIngester();
     SrsIngester();
@@ -72,7 +72,7 @@ public:
 public:
 public:
     virtual int start();
     virtual int start();
     virtual void stop();
     virtual void stop();
-// interface ISrsThreadHandler.
+// interface ISrsReusableThreadHandler.
 public:
 public:
     virtual int cycle();
     virtual int cycle();
     virtual void on_thread_stop();
     virtual void on_thread_stop();

@@ -79,7 +79,7 @@ SrsUdpListener::SrsUdpListener(ISrsUdpHandler* h, string i, int p)
     nb_buf = SRS_UDP_MAX_PACKET_SIZE;
     nb_buf = SRS_UDP_MAX_PACKET_SIZE;
     buf = new char[nb_buf];
     buf = new char[nb_buf];
 
 
-    pthread = new SrsThread("udp", this, 0, true);
+    pthread = new SrsReusableThread("udp", this);
 }
 }
 
 
 SrsUdpListener::~SrsUdpListener()
 SrsUdpListener::~SrsUdpListener()
@@ -157,7 +157,7 @@ int SrsUdpListener::cycle()
 {
 {
     int ret = ERROR_SUCCESS;
     int ret = ERROR_SUCCESS;
     
     
-    while (pthread->can_loop()) {
+    while (!pthread->interrupted()) {
         // TODO: FIXME: support ipv6, @see man 7 ipv6
         // TODO: FIXME: support ipv6, @see man 7 ipv6
         sockaddr_in from;
         sockaddr_in from;
         int nb_from = sizeof(sockaddr_in);
         int nb_from = sizeof(sockaddr_in);
@@ -190,7 +190,7 @@ SrsTcpListener::SrsTcpListener(ISrsTcpHandler* h, string i, int p)
     _fd = -1;
     _fd = -1;
     _stfd = NULL;
     _stfd = NULL;
 
 
-    pthread = new SrsThread("tcp", this, 0, true);
+    pthread = new SrsReusableThread("tcp", this);
 }
 }
 
 
 SrsTcpListener::~SrsTcpListener()
 SrsTcpListener::~SrsTcpListener()

@@ -82,12 +82,12 @@ public:
 /**
 /**
 * bind udp port, start thread to recv packet and handler it.
 * bind udp port, start thread to recv packet and handler it.
 */
 */
-class SrsUdpListener : public ISrsThreadHandler
+class SrsUdpListener : public ISrsReusableThreadHandler
 {
 {
 private:
 private:
     int _fd;
     int _fd;
     st_netfd_t _stfd;
     st_netfd_t _stfd;
-    SrsThread* pthread;
+    SrsReusableThread* pthread;
 private:
 private:
     char* buf;
     char* buf;
     int nb_buf;
     int nb_buf;
@@ -103,7 +103,7 @@ public:
     virtual st_netfd_t stfd();
     virtual st_netfd_t stfd();
 public:
 public:
     virtual int listen();
     virtual int listen();
-// interface ISrsThreadHandler.
+// interface ISrsReusableThreadHandler.
 public:
 public:
     virtual int cycle();
     virtual int cycle();
 };
 };
@@ -111,12 +111,12 @@ public:
 /**
 /**
 * bind and listen tcp port, use handler to process the client.
 * bind and listen tcp port, use handler to process the client.
 */
 */
-class SrsTcpListener : public ISrsThreadHandler
+class SrsTcpListener : public ISrsReusableThreadHandler
 {
 {
 private:
 private:
     int _fd;
     int _fd;
     st_netfd_t _stfd;
     st_netfd_t _stfd;
-    SrsThread* pthread;
+    SrsReusableThread* pthread;
 private:
 private:
     ISrsTcpHandler* handler;
     ISrsTcpHandler* handler;
     std::string ip;
     std::string ip;
@@ -128,7 +128,7 @@ public:
     virtual int fd();
     virtual int fd();
 public:
 public:
     virtual int listen();
     virtual int listen();
-// interface ISrsThreadHandler.
+// interface ISrsReusableThreadHandler.
 public:
 public:
     virtual int cycle();
     virtual int cycle();
 };
 };

@@ -82,7 +82,7 @@ public:
     virtual void trace(const char* tag, int context_id, const char* fmt, ...);
     virtual void trace(const char* tag, int context_id, const char* fmt, ...);
     virtual void warn(const char* tag, int context_id, const char* fmt, ...);
     virtual void warn(const char* tag, int context_id, const char* fmt, ...);
     virtual void error(const char* tag, int context_id, const char* fmt, ...);
     virtual void error(const char* tag, int context_id, const char* fmt, ...);
-// interface ISrsThreadHandler.
+// interface ISrsReloadHandler.
 public:
 public:
     virtual int on_reload_log_tank();
     virtual int on_reload_log_tank();
     virtual int on_reload_log_level();
     virtual int on_reload_log_level();

@@ -50,7 +50,7 @@ SrsRecvThread::SrsRecvThread(ISrsMessageHandler* msg_handler, SrsRtmpServer* rtm
     timeout = timeout_ms;
     timeout = timeout_ms;
     handler = msg_handler;
     handler = msg_handler;
     rtmp = rtmp_sdk;
     rtmp = rtmp_sdk;
-    trd = new SrsThread("recv", this, 0, true);
+    trd = new SrsReusableThread("recv", this);
 }
 }
 
 
 SrsRecvThread::~SrsRecvThread()
 SrsRecvThread::~SrsRecvThread()
@@ -76,7 +76,7 @@ int SrsRecvThread::cycle()
 {
 {
     int ret = ERROR_SUCCESS;
     int ret = ERROR_SUCCESS;
 
 
-    while (trd->can_loop()) {
+    while (!trd->interrupted()) {
         if (!handler->can_handle()) {
         if (!handler->can_handle()) {
             st_usleep(timeout * 1000);
             st_usleep(timeout * 1000);
             continue;
             continue;
@@ -96,7 +96,7 @@ int SrsRecvThread::cycle()
             }
             }
     
     
             // we use no timeout to recv, should never got any error.
             // we use no timeout to recv, should never got any error.
-            trd->stop_loop();
+            trd->interrupt();
             
             
             // notice the handler got a recv error.
             // notice the handler got a recv error.
             handler->on_recv_error(ret);
             handler->on_recv_error(ret);
@@ -111,7 +111,7 @@ int SrsRecvThread::cycle()
 
 
 void SrsRecvThread::stop_loop()
 void SrsRecvThread::stop_loop()
 {
 {
-    trd->stop_loop();
+    trd->interrupt();
 }
 }
 
 
 void SrsRecvThread::on_thread_start()
 void SrsRecvThread::on_thread_start()

@@ -79,10 +79,10 @@ public:
 /**
 /**
  * the recv thread, use message handler to handle each received message.
  * the recv thread, use message handler to handle each received message.
  */
  */
-class SrsRecvThread : public ISrsThreadHandler
+class SrsRecvThread : public ISrsReusableThreadHandler
 {
 {
 protected:
 protected:
-    SrsThread* trd;
+    SrsReusableThread* trd;
     ISrsMessageHandler* handler;
     ISrsMessageHandler* handler;
     SrsRtmpServer* rtmp;
     SrsRtmpServer* rtmp;
     int timeout;
     int timeout;

@@ -192,7 +192,7 @@ SrsRtspConn::SrsRtspConn(SrsRtspCaster* c, st_netfd_t fd, std::string o)
     stfd = fd;
     stfd = fd;
     skt = new SrsStSocket(fd);
     skt = new SrsStSocket(fd);
     rtsp = new SrsRtspStack(skt);
     rtsp = new SrsRtspStack(skt);
-    trd = new SrsThread("rtsp", this, 0, false);
+    trd = new SrsOneCycleThread("rtsp", this);
 
 
     req = NULL;
     req = NULL;
     io = NULL;
     io = NULL;
@@ -210,7 +210,6 @@ SrsRtspConn::SrsRtspConn(SrsRtspCaster* c, st_netfd_t fd, std::string o)
 SrsRtspConn::~SrsRtspConn()
 SrsRtspConn::~SrsRtspConn()
 {
 {
     srs_close_stfd(stfd);
     srs_close_stfd(stfd);
-    trd->stop();
 
 
     srs_freep(video_rtp);
     srs_freep(video_rtp);
     srs_freep(audio_rtp);
     srs_freep(audio_rtp);
@@ -219,7 +218,9 @@ SrsRtspConn::~SrsRtspConn()
     srs_freep(skt);
     srs_freep(skt);
     srs_freep(rtsp);
     srs_freep(rtsp);
     
     
-    close();
+    srs_freep(client);
+    srs_freep(io);
+    srs_freep(req);
 
 
     srs_freep(vjitter);
     srs_freep(vjitter);
     srs_freep(ajitter);
     srs_freep(ajitter);
@@ -412,9 +413,6 @@ int SrsRtspConn::cycle()
         srs_warn("client disconnect peer. ret=%d", ret);
         srs_warn("client disconnect peer. ret=%d", ret);
     }
     }
 
 
-    // terminate thread in the thread cycle itself.
-    trd->stop_loop();
-
     return ERROR_SUCCESS;
     return ERROR_SUCCESS;
 }
 }
 
 
@@ -763,14 +761,6 @@ int SrsRtspConn::connect_app(string ep_server, string ep_port)
     return ret;
     return ret;
 }
 }
 
 
-void SrsRtspConn::close()
-{
-    srs_freep(client);
-    srs_freep(io);
-    srs_freep(req);
-    srs_close_stfd(stfd);
-}
-
 SrsRtspCaster::SrsRtspCaster(SrsConfDirective* c)
 SrsRtspCaster::SrsRtspCaster(SrsConfDirective* c)
 {
 {
     // TODO: FIXME: support reload.
     // TODO: FIXME: support reload.

@@ -113,7 +113,7 @@ public:
 /**
 /**
 * the rtsp connection serve the fd.
 * the rtsp connection serve the fd.
 */
 */
-class SrsRtspConn : public ISrsThreadHandler
+class SrsRtspConn : public ISrsOneCycleThreadHandler
 {
 {
 private:
 private:
     std::string output_template;
     std::string output_template;
@@ -136,7 +136,7 @@ private:
     SrsStSocket* skt;
     SrsStSocket* skt;
     SrsRtspStack* rtsp;
     SrsRtspStack* rtsp;
     SrsRtspCaster* caster;
     SrsRtspCaster* caster;
-    SrsThread* trd;
+    SrsOneCycleThread* trd;
 private:
 private:
     SrsRequest* req;
     SrsRequest* req;
     SrsStSocket* io;
     SrsStSocket* io;
@@ -163,7 +163,7 @@ private:
 // internal methods
 // internal methods
 public:
 public:
     virtual int on_rtp_packet(SrsRtpPacket* pkt, int stream_id);
     virtual int on_rtp_packet(SrsRtpPacket* pkt, int stream_id);
-// interface ISrsThreadHandler
+// interface ISrsOneCycleThreadHandler
 public:
 public:
     virtual int cycle();
     virtual int cycle();
     virtual void on_thread_stop();
     virtual void on_thread_stop();
@@ -182,8 +182,6 @@ private:
     // @remark ignore when not connected, reconnect when disconnected.
     // @remark ignore when not connected, reconnect when disconnected.
     virtual int connect();
     virtual int connect();
     virtual int connect_app(std::string ep_server, std::string ep_port);
     virtual int connect_app(std::string ep_server, std::string ep_port);
-    // close the connected io and rtmp to ready to be re-connect.
-    virtual void close();
 };
 };
 
 
 /**
 /**

@@ -367,13 +367,12 @@ SrsSignalManager::SrsSignalManager(SrsServer* server)
     
     
     _server = server;
     _server = server;
     sig_pipe[0] = sig_pipe[1] = -1;
     sig_pipe[0] = sig_pipe[1] = -1;
-    pthread = new SrsThread("signal", this, 0, true);
+    pthread = new SrsEndlessThread("signal", this);
     signal_read_stfd = NULL;
     signal_read_stfd = NULL;
 }
 }
 
 
 SrsSignalManager::~SrsSignalManager()
 SrsSignalManager::~SrsSignalManager()
 {
 {
-    pthread->stop();
     srs_freep(pthread);
     srs_freep(pthread);
     
     
     srs_close_stfd(signal_read_stfd);
     srs_close_stfd(signal_read_stfd);

@@ -179,7 +179,7 @@ public:
 * convert signal to io,
 * convert signal to io,
 * @see: st-1.9/docs/notes.html
 * @see: st-1.9/docs/notes.html
 */
 */
-class SrsSignalManager : public ISrsThreadHandler
+class SrsSignalManager : public ISrsEndlessThreadHandler
 {
 {
 private:
 private:
     /* Per-process pipe which is used as a signal queue. */
     /* Per-process pipe which is used as a signal queue. */
@@ -188,14 +188,14 @@ private:
     st_netfd_t signal_read_stfd;
     st_netfd_t signal_read_stfd;
 private:
 private:
     SrsServer* _server;
     SrsServer* _server;
-    SrsThread* pthread;
+    SrsEndlessThread* pthread;
 public:
 public:
     SrsSignalManager(SrsServer* server);
     SrsSignalManager(SrsServer* server);
     virtual ~SrsSignalManager();
     virtual ~SrsSignalManager();
 public:
 public:
     virtual int initialize();
     virtual int initialize();
     virtual int start();
     virtual int start();
-// interface ISrsThreadHandler.
+// interface ISrsEndlessThreadHandler.
 public:
 public:
     virtual int cycle();
     virtual int cycle();
 private:
 private:

@@ -26,206 +26,337 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <srs_kernel_error.hpp>
 #include <srs_kernel_error.hpp>
 #include <srs_kernel_log.hpp>
 #include <srs_kernel_log.hpp>
 
 
-ISrsThreadHandler::ISrsThreadHandler()
+namespace internal {
+    ISrsThreadHandler::ISrsThreadHandler()
+    {
+    }
+    
+    ISrsThreadHandler::~ISrsThreadHandler()
+    {
+    }
+    
+    void ISrsThreadHandler::on_thread_start()
+    {
+    }
+    
+    int ISrsThreadHandler::on_before_cycle()
+    {
+        int ret = ERROR_SUCCESS;
+        return ret;
+    }
+    
+    int ISrsThreadHandler::on_end_cycle()
+    {
+        int ret = ERROR_SUCCESS;
+        return ret;
+    }
+    
+    void ISrsThreadHandler::on_thread_stop()
+    {
+    }
+    
+    SrsThread::SrsThread(const char* name, ISrsThreadHandler* thread_handler, int64_t interval_us, bool joinable)
+    {
+        _name = name;
+        handler = thread_handler;
+        cycle_interval_us = interval_us;
+        
+        tid = NULL;
+        loop = false;
+        really_terminated = true;
+        _cid = -1;
+        _joinable = joinable;
+        
+        // in start(), the thread cycle method maybe stop and remove the thread itself,
+        // and the thread start() is waiting for the _cid, and segment fault then.
+        // @see https://github.com/simple-rtmp-server/srs/issues/110
+        // thread will set _cid, callback on_thread_start(), then wait for the can_run signal.
+        can_run = false;
+    }
+    
+    SrsThread::~SrsThread()
+    {
+        stop();
+    }
+    
+    int SrsThread::cid()
+    {
+        return _cid;
+    }
+    
+    int SrsThread::start()
+    {
+        int ret = ERROR_SUCCESS;
+        
+        if(tid) {
+            srs_info("thread %s already running.", _name);
+            return ret;
+        }
+        
+        if((tid = st_thread_create(thread_fun, this, (_joinable? 1:0), 0)) == NULL){
+            ret = ERROR_ST_CREATE_CYCLE_THREAD;
+            srs_error("st_thread_create failed. ret=%d", ret);
+            return ret;
+        }
+        
+        // we set to loop to true for thread to run.
+        loop = true;
+        
+        // wait for cid to ready, for parent thread to get the cid.
+        while (_cid < 0 && loop) {
+            st_usleep(10 * 1000);
+        }
+        
+        // now, cycle thread can run.
+        can_run = true;
+        
+        return ret;
+    }
+    
+    void SrsThread::stop()
+    {
+        if (tid) {
+            loop = false;
+            
+            // the interrupt will cause the socket to read/write error,
+            // which will terminate the cycle thread.
+            st_thread_interrupt(tid);
+            
+            // when joinable, wait util quit.
+            if (_joinable) {
+                // wait the thread to exit.
+                int ret = st_thread_join(tid, NULL);
+                if (ret) {
+                    srs_warn("core: ignore join thread failed.");
+                }
+                
+                // wait the thread actually terminated.
+                // sometimes the thread join return -1, for example,
+                // when thread use st_recvfrom, the thread join return -1.
+                // so here, we use a variable to ensure the thread stopped.
+                while (!really_terminated) {
+                    st_usleep(10 * 1000);
+                    
+                    if (really_terminated) {
+                        break;
+                    }
+                    srs_warn("core: wait thread to actually terminated");
+                }
+            }
+            
+            tid = NULL;
+        }
+    }
+    
+    bool SrsThread::can_loop()
+    {
+        return loop;
+    }
+    
+    void SrsThread::stop_loop()
+    {
+        loop = false;
+    }
+    
+    void SrsThread::thread_cycle()
+    {
+        int ret = ERROR_SUCCESS;
+        
+        _srs_context->generate_id();
+        srs_info("thread %s cycle start", _name);
+        
+        _cid = _srs_context->get_id();
+        
+        srs_assert(handler);
+        handler->on_thread_start();
+        
+        // thread is running now.
+        really_terminated = false;
+        
+        // wait for cid to ready, for parent thread to get the cid.
+        while (!can_run && loop) {
+            st_usleep(10 * 1000);
+        }
+        
+        while (loop) {
+            if ((ret = handler->on_before_cycle()) != ERROR_SUCCESS) {
+                srs_warn("thread %s on before cycle failed, ignored and retry, ret=%d", _name, ret);
+                goto failed;
+            }
+            srs_info("thread %s on before cycle success");
+            
+            if ((ret = handler->cycle()) != ERROR_SUCCESS) {
+                if (!srs_is_client_gracefully_close(ret)) {
+                    srs_warn("thread %s cycle failed, ignored and retry, ret=%d", _name, ret);
+                }
+                goto failed;
+            }
+            srs_info("thread %s cycle success", _name);
+            
+            if ((ret = handler->on_end_cycle()) != ERROR_SUCCESS) {
+                srs_warn("thread %s on end cycle failed, ignored and retry, ret=%d", _name, ret);
+                goto failed;
+            }
+            srs_info("thread %s on end cycle success", _name);
+            
+        failed:
+            if (!loop) {
+                break;
+            }
+            
+            // to improve performance, donot sleep when interval is zero.
+            // @see: https://github.com/simple-rtmp-server/srs/issues/237
+            if (cycle_interval_us != 0) {
+                st_usleep(cycle_interval_us);
+            }
+        }
+        
+        // readly terminated now.
+        really_terminated = true;
+        
+        handler->on_thread_stop();
+        srs_info("thread %s cycle finished", _name);
+    }
+    
+    void* SrsThread::thread_fun(void* arg)
+    {
+        SrsThread* obj = (SrsThread*)arg;
+        srs_assert(obj);
+        
+        obj->thread_cycle();
+        
+        st_thread_exit(NULL);
+        
+        return NULL;
+    }
+}
+
+ISrsEndlessThreadHandler::ISrsEndlessThreadHandler()
 {
 {
 }
 }
 
 
-ISrsThreadHandler::~ISrsThreadHandler()
+ISrsEndlessThreadHandler::~ISrsEndlessThreadHandler()
 {
 {
 }
 }
 
 
-void ISrsThreadHandler::on_thread_start()
+SrsEndlessThread::SrsEndlessThread(const char* n, ISrsEndlessThreadHandler* h)
 {
 {
+    handler = h;
+    pthread = new internal::SrsThread(n, this, 0, false);
 }
 }
 
 
-int ISrsThreadHandler::on_before_cycle()
+SrsEndlessThread::~SrsEndlessThread()
 {
 {
-    int ret = ERROR_SUCCESS;
-    return ret;
+    pthread->stop();
+    srs_freep(pthread);
 }
 }
 
 
-int ISrsThreadHandler::on_end_cycle()
+int SrsEndlessThread::start()
 {
 {
-    int ret = ERROR_SUCCESS;
-    return ret;
+    return pthread->start();
 }
 }
 
 
-void ISrsThreadHandler::on_thread_stop()
+int SrsEndlessThread::cycle()
 {
 {
+    return handler->cycle();
 }
 }
 
 
-SrsThread::SrsThread(const char* name, ISrsThreadHandler* thread_handler, int64_t interval_us, bool joinable)
+ISrsOneCycleThreadHandler::ISrsOneCycleThreadHandler()
 {
 {
-    _name = name;
-    handler = thread_handler;
-    cycle_interval_us = interval_us;
-    
-    tid = NULL;
-    loop = false;
-    really_terminated = true;
-    _cid = -1;
-    _joinable = joinable;
-    
-    // in start(), the thread cycle method maybe stop and remove the thread itself,
-    // and the thread start() is waiting for the _cid, and segment fault then.
-    // @see https://github.com/simple-rtmp-server/srs/issues/110
-    // thread will set _cid, callback on_thread_start(), then wait for the can_run signal.
-    can_run = false;
 }
 }
 
 
-SrsThread::~SrsThread()
+ISrsOneCycleThreadHandler::~ISrsOneCycleThreadHandler()
 {
 {
-    stop();
 }
 }
 
 
-int SrsThread::cid()
+void ISrsOneCycleThreadHandler::on_thread_stop()
 {
 {
-    return _cid;
 }
 }
 
 
-int SrsThread::start()
+SrsOneCycleThread::SrsOneCycleThread(const char* n, ISrsOneCycleThreadHandler* h)
 {
 {
-    int ret = ERROR_SUCCESS;
-    
-    if(tid) {
-        srs_info("thread %s already running.", _name);
-        return ret;
-    }
-    
-    if((tid = st_thread_create(thread_fun, this, (_joinable? 1:0), 0)) == NULL){
-        ret = ERROR_ST_CREATE_CYCLE_THREAD;
-        srs_error("st_thread_create failed. ret=%d", ret);
-        return ret;
-    }
-    
-    // we set to loop to true for thread to run.
-    loop = true;
-    
-    // wait for cid to ready, for parent thread to get the cid.
-    while (_cid < 0 && loop) {
-        st_usleep(10 * 1000);
-    }
-    
-    // now, cycle thread can run.
-    can_run = true;
-    
+    handler = h;
+    pthread = new internal::SrsThread(n, this, 0, false);
+}
+
+SrsOneCycleThread::~SrsOneCycleThread()
+{
+    pthread->stop();
+    srs_freep(pthread);
+}
+
+int SrsOneCycleThread::start()
+{
+    return pthread->start();
+}
+
+int SrsOneCycleThread::cycle()
+{
+    int ret = handler->cycle();
+    pthread->stop_loop();
     return ret;
     return ret;
 }
 }
 
 
-void SrsThread::stop()
+void SrsOneCycleThread::on_thread_stop()
 {
 {
-    if (tid) {
-        loop = false;
-        
-        // the interrupt will cause the socket to read/write error,
-        // which will terminate the cycle thread.
-        st_thread_interrupt(tid);
-        
-        // when joinable, wait util quit.
-        if (_joinable) {
-            // wait the thread to exit.
-            int ret = st_thread_join(tid, NULL);
-            if (ret) {
-                srs_warn("core: ignore join thread failed.");
-            }
+    handler->on_thread_stop();
+}
 
 
-            // wait the thread actually terminated.
-            // sometimes the thread join return -1, for example, 
-            // when thread use st_recvfrom, the thread join return -1.
-            // so here, we use a variable to ensure the thread stopped.
-            while (!really_terminated) {
-                st_usleep(10 * 1000);
+ISrsReusableThreadHandler::ISrsReusableThreadHandler()
+{
+}
 
 
-                if (really_terminated) {
-                    break;
-                }
-                srs_warn("core: wait thread to actually terminated");
-            }
-        }
-        
-        tid = NULL;
-    }
+ISrsReusableThreadHandler::~ISrsReusableThreadHandler()
+{
 }
 }
 
 
-bool SrsThread::can_loop()
+void ISrsReusableThreadHandler::on_thread_stop()
 {
 {
-    return loop;
 }
 }
 
 
-void SrsThread::stop_loop()
+SrsReusableThread::SrsReusableThread(const char* n, ISrsReusableThreadHandler* h, int64_t interval_us)
 {
 {
-    loop = false;
+    handler = h;
+    pthread = new internal::SrsThread(n, this, interval_us, true);
 }
 }
 
 
-void SrsThread::thread_cycle()
+SrsReusableThread::~SrsReusableThread()
 {
 {
-    int ret = ERROR_SUCCESS;
-    
-    _srs_context->generate_id();
-    srs_info("thread %s cycle start", _name);
-    
-    _cid = _srs_context->get_id();
-    
-    srs_assert(handler);
-    handler->on_thread_start();
+    pthread->stop();
+    srs_freep(pthread);
+}
 
 
-    // thread is running now.
-    really_terminated = false;
-    
-    // wait for cid to ready, for parent thread to get the cid.
-    while (!can_run && loop) {
-        st_usleep(10 * 1000);
-    }
-    
-    while (loop) {
-        if ((ret = handler->on_before_cycle()) != ERROR_SUCCESS) {
-            srs_warn("thread %s on before cycle failed, ignored and retry, ret=%d", _name, ret);
-            goto failed;
-        }
-        srs_info("thread %s on before cycle success");
-        
-        if ((ret = handler->cycle()) != ERROR_SUCCESS) {
-            if (!srs_is_client_gracefully_close(ret)) {
-                srs_warn("thread %s cycle failed, ignored and retry, ret=%d", _name, ret);
-            }
-            goto failed;
-        }
-        srs_info("thread %s cycle success", _name);
-        
-        if ((ret = handler->on_end_cycle()) != ERROR_SUCCESS) {
-            srs_warn("thread %s on end cycle failed, ignored and retry, ret=%d", _name, ret);
-            goto failed;
-        }
-        srs_info("thread %s on end cycle success", _name);
+int SrsReusableThread::start()
+{
+    return pthread->start();
+}
 
 
-failed:
-        if (!loop) {
-            break;
-        }
-        
-        // to improve performance, donot sleep when interval is zero.
-        // @see: https://github.com/simple-rtmp-server/srs/issues/237
-        if (cycle_interval_us != 0) {
-            st_usleep(cycle_interval_us);
-        }
-    }
-    
-    // readly terminated now.
-    really_terminated = true;
-    
-    handler->on_thread_stop();
-    srs_info("thread %s cycle finished", _name);
+void SrsReusableThread::stop()
+{
+    pthread->stop();
 }
 }
 
 
-void* SrsThread::thread_fun(void* arg)
+int SrsReusableThread::cid()
 {
 {
-    SrsThread* obj = (SrsThread*)arg;
-    srs_assert(obj);
-    
-    obj->thread_cycle();
+    return pthread->cid();
+}
 
 
-    st_thread_exit(NULL);
-    
-    return NULL;
+void SrsReusableThread::interrupt()
+{
+    pthread->stop_loop();
 }
 }
 
 
+bool SrsReusableThread::interrupted()
+{
+    return !pthread->can_loop();
+}
+
+int SrsReusableThread::cycle()
+{
+    return handler->cycle();
+}
+
+void SrsReusableThread::on_thread_stop()
+{
+    handler->on_thread_stop();
+}

@@ -31,189 +31,311 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
 #include <srs_app_st.hpp>
 #include <srs_app_st.hpp>
 
 
+// the internal classes, user should never use it.
+// user should use the public classes at the bellow:
+// @see SrsEndlessThread, SrsOneCycleThread, SrsReusableThread
+namespace internal {
+    /**
+     * the handler for the thread, callback interface.
+     * the thread model defines as:
+     *     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_thread_stop()
+     * when stop, the thread will interrupt the st_thread,
+     * which will cause the socket to return error and
+     * terminate the cycle thread.
+     *
+     * @remark why should check can_loop() in cycle method?
+     *       when thread interrupt, the socket maybe not got EINT,
+     *       espectially on st_usleep(), so the cycle must check the loop,
+     *       when handler->cycle() has loop itself, for example:
+     *               while (true):
+     *                   if (read_from_socket(skt) < 0) break;
+     *       if thread stop when read_from_socket, it's ok, the loop will break,
+     *       but when thread stop interrupt the s_usleep(0), then the loop is
+     *       death loop.
+     *       in a word, the handler->cycle() must:
+     *               while (pthread->can_loop()):
+     *                   if (read_from_socket(skt) < 0) break;
+     *       check the loop, then it works.
+     *
+     * @remark why should use stop_loop() to terminate thread in itself?
+     *       in the thread itself, that is the cycle method,
+     *       if itself want to terminate the thread, should never use stop(),
+     *       but use stop_loop() to set the loop to false and terminate normally.
+     *
+     * @remark when should set the interval_us, and when not?
+     *       the cycle will invoke util cannot loop, eventhough the return code of cycle is error,
+     *       so the interval_us used to sleep for each cycle.
+     */
+    class ISrsThreadHandler
+    {
+    public:
+        ISrsThreadHandler();
+        virtual ~ISrsThreadHandler();
+    public:
+        virtual void on_thread_start();
+        virtual int on_before_cycle();
+        virtual int cycle() = 0;
+        virtual int on_end_cycle();
+        virtual void on_thread_stop();
+    };
+    
+    /**
+     * provides servies from st_thread_t,
+     * for common thread usage.
+     */
+    class SrsThread
+    {
+    private:
+        st_thread_t tid;
+        int _cid;
+        bool loop;
+        bool can_run;
+        bool really_terminated;
+        bool _joinable;
+        const char* _name;
+    private:
+        ISrsThreadHandler* handler;
+        int64_t cycle_interval_us;
+    public:
+        /**
+         * initialize the thread.
+         * @param name, human readable name for st debug.
+         * @param thread_handler, the cycle handler for the thread.
+         * @param interval_us, the sleep interval when cycle finished.
+         * @param joinable, if joinable, other thread must stop the thread.
+         * @remark if joinable, thread never quit itself, or memory leak.
+         * @see: https://github.com/simple-rtmp-server/srs/issues/78
+         * @remark about st debug, see st-1.9/README, _st_iterate_threads_flag
+         */
+        /**
+         * TODO: FIXME: maybe all thread must be reap by others threads,
+         * @see: https://github.com/simple-rtmp-server/srs/issues/77
+         */
+        SrsThread(const char* name, ISrsThreadHandler* thread_handler, int64_t interval_us, bool joinable);
+        virtual ~SrsThread();
+    public:
+        /**
+         * get the context id. @see: ISrsThreadContext.get_id().
+         * used for parent thread to get the id.
+         * @remark when start thread, parent thread will block and wait for this id ready.
+         */
+        virtual int cid();
+        /**
+         * start the thread, invoke the cycle of handler util
+         * user stop the thread.
+         * @remark ignore any error of cycle of handler.
+         * @remark user can start multiple times, ignore if already started.
+         * @remark wait for the cid is set by thread pfn.
+         */
+        virtual int start();
+        /**
+         * stop the thread, wait for the thread to terminate.
+         * @remark user can stop multiple times, ignore if already stopped.
+         */
+        virtual void stop();
+    public:
+        /**
+         * whether the thread should loop,
+         * used for handler->cycle() which has a loop method,
+         * to check this method, break if false.
+         */
+        virtual bool can_loop();
+        /**
+         * for the loop thread to stop the loop.
+         * other thread can directly use stop() to stop loop and wait for quit.
+         * this stop loop method only set loop to false.
+         */
+        virtual void stop_loop();
+    private:
+        virtual void thread_cycle();
+        static void* thread_fun(void* arg);
+    };
+}
+
 /**
 /**
- * the handler for the thread, callback interface.
- * the thread model defines as:
- *     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_thread_stop()
- * when stop, the thread will interrupt the st_thread,
- * which will cause the socket to return error and
- * terminate the cycle thread.
- *
- * Usage 1: loop thread never quit.
+ * the endless thread is a loop thread never quit.
  *      user can create thread always running util server terminate.
  *      user can create thread always running util server terminate.
  *      the step to create a thread never stop:
  *      the step to create a thread never stop:
- *      1. create SrsThread field, with joinable false.
+ *      1. create SrsEndlessThread field.
  *      for example:
  *      for example:
- *          class SrsStreamCache : public ISrsThreadHandler {
- *               public: SrsStreamCache() { pthread = new SrsThread("http-stream", this, SRS_AUTO_STREAM_SLEEP_US, false); }
+ *          class SrsStreamCache : public ISrsEndlessThreadHandler {
+ *               public: SrsStreamCache() { pthread = new SrsEndlessThread("http-stream", this); }
  *               public: virtual int cycle() {
  *               public: virtual int cycle() {
- *                   // check status, start ffmpeg when stopped.
+ *                   // do some work never end.
  *               }
  *               }
  *          }
  *          }
- *
- * Usage 2: stop by other thread.
- *       user can create thread and stop then start again and again,
- *       generally must provides a start and stop method, @see SrsIngester.
- *       the step to create a thread stop by other thread:
- *       1. create SrsThread field, with joinable true.
- *       2. must use stop to stop and join the thread.
- *       for example:
- *           class SrsIngester : public ISrsThreadHandler {
- *               public: SrsIngester() { pthread = new SrsThread("ingest", this, SRS_AUTO_INGESTER_SLEEP_US, true); }
- *               public: virtual int start() { return pthread->start(); }
- *               public: virtual void stop() { pthread->stop(); }
- *               public: virtual int cycle() {
- *                   // check status, start ffmpeg when stopped.
- *               }
- *           };
- *
- * Usage 3: stop by thread itself.
+ * @remark user must use block method in cycle method, for example, sleep or socket io.
+ */
+class ISrsEndlessThreadHandler
+{
+public:
+    ISrsEndlessThreadHandler();
+    virtual ~ISrsEndlessThreadHandler();
+public:
+    /**
+     * the cycle method for the common thread.
+     * @remark user must use block method in cycle method, for example, sleep or socket io.
+     */
+    virtual int cycle() = 0;
+};
+class SrsEndlessThread : public internal::ISrsThreadHandler
+{
+private:
+    internal::SrsThread* pthread;
+    ISrsEndlessThreadHandler* handler;
+public:
+    SrsEndlessThread(const char* n, ISrsEndlessThreadHandler* h);
+    virtual ~SrsEndlessThread();
+public:
+    /**
+     * for the endless thread, never quit.
+     */
+    virtual int start();
+// interface internal::ISrsThreadHandler
+public:
+    virtual int cycle();
+};
+
+/**
+ * the one cycle thread is a thread do the cycle only one time,
+ * that is, the thread will quit when return from the cycle.
  *       user can create thread which stop itself,
  *       user can create thread which stop itself,
  *       generally only need to provides a start method,
  *       generally only need to provides a start method,
  *       the object will destroy itself then terminate the thread, @see SrsConnection
  *       the object will destroy itself then terminate the thread, @see SrsConnection
- *       1. create SrsThread field, with joinable false.
- *       2. owner stop thread loop, destroy itself when thread stop.
+ *       1. create SrsThread field
+ *       2. the thread quit when return from cycle.
  *       for example:
  *       for example:
- *           class SrsConnection : public ISrsThreadHandler {
- *               public: SrsConnection() { pthread = new SrsThread("conn", this, 0, false); }
+ *           class SrsConnection : public ISrsOneCycleThreadHandler {
+ *               public: SrsConnection() { pthread = new SrsOneCycleThread("conn", this); }
  *               public: virtual int start() { return pthread->start(); }
  *               public: virtual int start() { return pthread->start(); }
  *               public: virtual int cycle() {
  *               public: virtual int cycle() {
  *                   // serve client.
  *                   // serve client.
  *                   // set loop to stop to quit, stop thread itself.
  *                   // set loop to stop to quit, stop thread itself.
  *                   pthread->stop_loop();
  *                   pthread->stop_loop();
  *               }
  *               }
- *               public: virtual int on_thread_stop() {
+ *               public: virtual void on_thread_stop() {
  *                   // remove the connection in thread itself.
  *                   // remove the connection in thread itself.
  *                   server->remove(this);
  *                   server->remove(this);
  *               }
  *               }
  *           };
  *           };
- *
- * Usage 4: loop in the cycle method.
- *       user can use loop code in the cycle method, @see SrsForwarder
- *       1. create SrsThread field, with or without joinable is ok.
- *       2. loop code in cycle method, check the can_loop() for thread to quit.
+ */
+class ISrsOneCycleThreadHandler
+{
+public:
+    ISrsOneCycleThreadHandler();
+    virtual ~ISrsOneCycleThreadHandler();
+public:
+    /**
+     * the cycle method for the one cycle thread.
+     */
+    virtual int cycle() = 0;
+    /**
+     * when thread stop, the handler can do cleanup.
+     * @remark this method is optional, handler can ignore it.
+     */
+    virtual void on_thread_stop();
+};
+class SrsOneCycleThread : public internal::ISrsThreadHandler
+{
+private:
+    internal::SrsThread* pthread;
+    ISrsOneCycleThreadHandler* handler;
+public:
+    SrsOneCycleThread(const char* n, ISrsOneCycleThreadHandler* h);
+    virtual ~SrsOneCycleThread();
+public:
+    /**
+     * for the one cycle thread, quit when cycle return.
+     */
+    virtual int start();
+// interface internal::ISrsThreadHandler
+public:
+    virtual int cycle();
+    virtual void on_thread_stop();
+};
+
+/**
+ * the reuse thread is a thread stop and start by other thread.
+ *       user can create thread and stop then start again and again,
+ *       generally must provides a start and stop method, @see SrsIngester.
+ *       the step to create a thread stop by other thread:
+ *       1. create SrsThread field, with joinable true.
+ *       2. must use stop to stop and join the thread.
  *       for example:
  *       for example:
- *           class SrsForwarder : public ISrsThreadHandler {
+ *           class SrsIngester : public ISrsThreadHandler {
+ *               public: SrsIngester() { pthread = new SrsThread("ingest", this, SRS_AUTO_INGESTER_SLEEP_US, true); }
+ *               public: virtual int start() { return pthread->start(); }
+ *               public: virtual void stop() { pthread->stop(); }
  *               public: virtual int cycle() {
  *               public: virtual int cycle() {
- *                   while (pthread->can_loop()) {
- *                       // read msgs from queue and forward to server.
- *                   }
+ *                   // check status, start ffmpeg when stopped.
  *               }
  *               }
  *           };
  *           };
- *
- * @remark why should check can_loop() in cycle method?
- *       when thread interrupt, the socket maybe not got EINT,
- *       espectially on st_usleep(), so the cycle must check the loop,
- *       when handler->cycle() has loop itself, for example:
- *               while (true):
- *                   if (read_from_socket(skt) < 0) break;
- *       if thread stop when read_from_socket, it's ok, the loop will break,
- *       but when thread stop interrupt the s_usleep(0), then the loop is
- *       death loop.
- *       in a word, the handler->cycle() must:
- *               while (pthread->can_loop()):
- *                   if (read_from_socket(skt) < 0) break;
- *       check the loop, then it works.
- *
- * @remark why should use stop_loop() to terminate thread in itself?
- *       in the thread itself, that is the cycle method,
- *       if itself want to terminate the thread, should never use stop(),
- *       but use stop_loop() to set the loop to false and terminate normally.
- *
- * @remark when should set the interval_us, and when not?
- *       the cycle will invoke util cannot loop, eventhough the return code of cycle is error,
- *       so the interval_us used to sleep for each cycle. 
  */
  */
-class ISrsThreadHandler
+class ISrsReusableThreadHandler
 {
 {
 public:
 public:
-    ISrsThreadHandler();
-    virtual ~ISrsThreadHandler();
+    ISrsReusableThreadHandler();
+    virtual ~ISrsReusableThreadHandler();
 public:
 public:
-    virtual void on_thread_start();
-    virtual int on_before_cycle();
+    /**
+     * the cycle method for the one cycle thread.
+     * @remark when the cycle has its inner loop, it must check whether
+     * the thread is interrupted.
+     */
     virtual int cycle() = 0;
     virtual int cycle() = 0;
-    virtual int on_end_cycle();
+    /**
+     * when thread stop, the handler can do cleanup.
+     * @remark this method is optional, handler can ignore it.
+     */
     virtual void on_thread_stop();
     virtual void on_thread_stop();
 };
 };
-
-/**
-* provides servies from st_thread_t,
-* for common thread usage.
-*/
-class SrsThread
+class SrsReusableThread : public internal::ISrsThreadHandler
 {
 {
 private:
 private:
-    st_thread_t tid;
-    int _cid;
-    bool loop;
-    bool can_run;
-    bool really_terminated;
-    bool _joinable;
-    const char* _name;
-private:
-    ISrsThreadHandler* handler;
-    int64_t cycle_interval_us;
+    internal::SrsThread* pthread;
+    ISrsReusableThreadHandler* handler;
 public:
 public:
-    /**
-    * initialize the thread.
-    * @param name, human readable name for st debug.
-    * @param thread_handler, the cycle handler for the thread.
-    * @param interval_us, the sleep interval when cycle finished.
-    * @param joinable, if joinable, other thread must stop the thread.
-    * @remark if joinable, thread never quit itself, or memory leak. 
-    * @see: https://github.com/simple-rtmp-server/srs/issues/78
-    * @remark about st debug, see st-1.9/README, _st_iterate_threads_flag
-    */
-    /**
-    * TODO: FIXME: maybe all thread must be reap by others threads, 
-    * @see: https://github.com/simple-rtmp-server/srs/issues/77
-    */
-    SrsThread(const char* name, ISrsThreadHandler* thread_handler, int64_t interval_us, bool joinable);
-    virtual ~SrsThread();
+    SrsReusableThread(const char* n, ISrsReusableThreadHandler* h, int64_t interval_us = 0);
+    virtual ~SrsReusableThread();
 public:
 public:
     /**
     /**
-    * get the context id. @see: ISrsThreadContext.get_id().
-    * used for parent thread to get the id.
-    * @remark when start thread, parent thread will block and wait for this id ready.
-    */
-    virtual int cid();
-    /**
-    * start the thread, invoke the cycle of handler util
-    * user stop the thread.
-    * @remark ignore any error of cycle of handler.
-    * @remark user can start multiple times, ignore if already started.
-    * @remark wait for the cid is set by thread pfn.
-    */
+     * for the reusable thread, start and stop by user.
+     */
     virtual int start();
     virtual int start();
     /**
     /**
-    * stop the thread, wait for the thread to terminate.
-    * @remark user can stop multiple times, ignore if already stopped.
-    */
+     * stop the thread, wait for the thread to terminate.
+     * @remark user can stop multiple times, ignore if already stopped.
+     */
     virtual void stop();
     virtual void stop();
 public:
 public:
     /**
     /**
-    * whether the thread should loop,
-    * used for handler->cycle() which has a loop method,
-    * to check this method, break if false.
-    */
-    virtual bool can_loop();
+     * get the context id. @see: ISrsThreadContext.get_id().
+     * used for parent thread to get the id.
+     * @remark when start thread, parent thread will block and wait for this id ready.
+     */
+    virtual int cid();
     /**
     /**
-    * for the loop thread to stop the loop.
-    * other thread can directly use stop() to stop loop and wait for quit.
-    * this stop loop method only set loop to false.
-    */
-    virtual void stop_loop();
-private:
-    virtual void thread_cycle();
-    static void* thread_fun(void* arg);
+     * interrupt the thread to stop loop.
+     * we only set the loop flag to false, not really interrupt the thread.
+     */
+    virtual void interrupt();
+    /**
+     * whether the thread is interrupted,
+     * for the cycle has its loop, the inner loop should quit when thread
+     * is interrupted.
+     */
+    virtual bool interrupted();
+// interface internal::ISrsThreadHandler
+public:
+    virtual int cycle();
+    virtual void on_thread_stop();
 };
 };
 
 
 #endif
 #endif