Merge branch 'srs.master'

@@ -388,7 +388,8 @@ if [ $SRS_EXPORT_LIBRTMP_PROJECT = NO ]; then
             "srs_app_thread" "srs_app_bandwidth" "srs_app_st" "srs_app_log" "srs_app_config" 
             "srs_app_pithy_print" "srs_app_reload" "srs_app_http_api" "srs_app_http_conn" "srs_app_http_hooks" 
             "srs_app_json" "srs_app_ingest" "srs_app_ffmpeg" "srs_app_utility" "srs_app_dvr" "srs_app_edge"
-            "srs_app_kbps" "srs_app_heartbeat" "srs_app_empty" "srs_app_http_client" "srs_app_avc_aac")
+            "srs_app_kbps" "srs_app_heartbeat" "srs_app_empty" "srs_app_http_client" "srs_app_avc_aac"
+            "srs_app_poll")
     APP_INCS="src/app"; MODULE_DIR=${APP_INCS} . auto/modules.sh
     APP_OBJS="${MODULE_OBJS[@]}"
 fi

@@ -1502,9 +1502,9 @@ int SrsConfig::check_config()
                 "total=%d(max_connections=%d, nb_consumed_fds=%d), ret=%d. "
                 "you can change max_connections from %d to %d, or "
                 "you can login as root and set the limit: ulimit -HSn %d", 
-                nb_connections, nb_total, max_open_files, 
+                nb_connections, nb_total + 1, max_open_files, 
                 nb_total, nb_connections, nb_consumed_fds,
-                ret, nb_connections, nb_canbe, nb_total);
+                ret, nb_connections, nb_canbe, nb_total + 1);
             return ret;
         }
     }

+/*
+The MIT License (MIT)
+
+Copyright (c) 2013-2014 winlin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <srs_app_poll.hpp>
+
+#include <srs_kernel_error.hpp>
+#include <srs_kernel_log.hpp>
+
+// the interval in us to refresh the poll for all fds.
+// for performance refine, @see: https://github.com/winlinvip/simple-rtmp-server/issues/194
+#define SRS_POLL_CYCLE_INTERVAL 10 * 1000 * 1000
+
+SrsPoll::SrsPoll()
+{
+    _pds = NULL;
+    pthread = new SrsThread(this, 0, false);
+}
+
+SrsPoll::~SrsPoll()
+{
+    srs_freep(_pds);
+    srs_freep(pthread);
+    fds.clear();
+}
+
+int SrsPoll::start()
+{
+    return pthread->start();
+}
+
+int SrsPoll::cycle()
+{
+    int ret = ERROR_SUCCESS;
+    
+    if (fds.size() == 0) {
+        st_usleep(SRS_CONSTS_RTMP_PULSE_TIMEOUT_US);
+        return ret;
+    }
+    
+    int nb_pds = (int)fds.size();
+    
+    // TODO: FIXME: use more efficient way for the poll.
+    srs_freep(_pds);
+    _pds = new pollfd[nb_pds];
+    
+    if (true) {
+        int index = 0;
+
+        std::map<int, SrsPollFD*>::iterator it;
+        for (it = fds.begin(); it != fds.end(); ++it) {
+            int fd = it->first;
+            
+            pollfd& pfd = _pds[index++];
+            pfd.fd = fd;
+            pfd.events = POLLIN;
+            pfd.revents = 0;
+        }
+        
+        srs_assert(index == (int)fds.size());
+    }
+
+    // Upon successful completion, a non-negative value is returned. 
+    // A positive value indicates the total number of OS file descriptors in pds that have events. 
+    // A value of 0 indicates that the call timed out.
+    if (st_poll(_pds, nb_pds, SRS_POLL_CYCLE_INTERVAL) < 0) {
+        srs_warn("ignore st_poll failed, size=%d", nb_pds);
+        return ret;
+    }
+    
+    for (int i = 0; i < nb_pds; i++) {
+        if (!(_pds[i].revents & POLLIN)) {
+            continue;
+        }
+        
+        int fd = _pds[i].fd;
+        if (fds.find(fd) == fds.end()) {
+            continue;
+        }
+        
+        SrsPollFD* owner = fds[fd];
+        owner->set_active(true);
+    }
+    
+    return ret;
+}
+
+int SrsPoll::add(st_netfd_t stfd, SrsPollFD* owner)
+{
+    int ret = ERROR_SUCCESS;
+    
+    int fd = st_netfd_fileno(stfd);
+    if (fds.find(fd) != fds.end()) {
+        ret = ERROR_RTMP_POLL_FD_DUPLICATED;
+        srs_error("fd exists, fd=%d, ret=%d", fd, ret);
+        return ret;
+    }
+    
+    fds[fd] = owner;
+    
+    return ret;
+}
+
+void SrsPoll::remove(st_netfd_t stfd, SrsPollFD* owner)
+{
+    std::map<int, SrsPollFD*>::iterator it;
+    
+    int fd = st_netfd_fileno(stfd);
+    if ((it = fds.find(fd)) != fds.end()) {
+        fds.erase(it);
+    }
+}
+
+SrsPoll* SrsPoll::_instance = new SrsPoll();
+
+SrsPoll* SrsPoll::instance()
+{
+    return _instance;
+}
+
+SrsPollFD::SrsPollFD()
+{
+    _stfd = NULL;
+    _active = false;
+}
+
+SrsPollFD::~SrsPollFD()
+{
+    if (_stfd) {
+        SrsPoll* poll = SrsPoll::instance();
+        poll->remove(_stfd, this);
+    }
+}
+
+int SrsPollFD::initialize(st_netfd_t stfd)
+{
+    int ret = ERROR_SUCCESS;
+    
+    _stfd = stfd;
+    
+    SrsPoll* poll = SrsPoll::instance();
+    if ((ret = poll->add(stfd, this)) != ERROR_SUCCESS) {
+        srs_error("add fd to poll failed. ret=%d", ret);
+        return ret;
+    }
+    
+    return ret;
+}
+
+bool SrsPollFD::active()
+{
+    return _active;
+}
+
+void SrsPollFD::set_active(bool v)
+{
+    _active = v;
+}
+

+/*
+The MIT License (MIT)
+
+Copyright (c) 2013-2014 winlin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef SRS_APP_POLL_HPP
+#define SRS_APP_POLL_HPP
+
+/*
+#include <srs_app_poll.hpp>
+*/
+
+#include <srs_core.hpp>
+
+#include <map>
+
+#include <srs_app_st.hpp>
+#include <srs_app_thread.hpp>
+
+class SrsPollFD;
+
+/**
+* the poll for all play clients to finger the active fd out.
+* for performance issue, @see: https://github.com/winlinvip/simple-rtmp-server/issues/194
+* the poll is shared by all SrsPollFD, and we start an isolate thread to finger the active fds.
+*/
+class SrsPoll : public ISrsThreadHandler
+{
+private:
+    SrsThread* pthread;
+    pollfd* _pds;
+    std::map<int, SrsPollFD*> fds;
+public:
+    SrsPoll();
+    virtual ~SrsPoll();
+public:
+    /**
+    * start the poll thread.
+    */
+    virtual int start();
+    /**
+    * start an cycle thread.
+    */
+    virtual int cycle();
+public:
+    /**
+    * add the fd to poll.
+    */
+    virtual int add(st_netfd_t stfd, SrsPollFD* owner);
+    /**
+    * remove the fd to poll, ignore any error.
+    */
+    virtual void remove(st_netfd_t stfd, SrsPollFD* owner);
+// singleton
+private:
+    static SrsPoll* _instance;
+public:
+    static SrsPoll* instance();
+};
+
+/**
+* the poll fd to check whether the specified fd is active.
+*/
+class SrsPollFD
+{
+private:
+    st_netfd_t _stfd;
+    // whether current fd is active.
+    bool _active;
+public:
+    SrsPollFD();
+    virtual ~SrsPollFD();
+public:
+    /**
+    * initialize the poll.
+    * @param stfd the fd to poll.
+    */
+    virtual int initialize(st_netfd_t stfd);
+    /**
+    * whether fd is active.
+    */
+    virtual bool active();
+    /**
+    * the poll will set to fd active when got data to read,
+    * the connection will set to deactive when data read.
+    */
+    virtual void set_active(bool v);
+};
+
+#endif
+

@@ -48,6 +48,7 @@ using namespace std;
 #include <srs_app_utility.hpp>
 #include <srs_protocol_msg_array.hpp>
 #include <srs_protocol_amf0.hpp>
+#include <srs_app_poll.hpp>
 
 // when stream is busy, for example, streaming is already
 // publishing, when a new client to request to publish,
@@ -516,12 +517,20 @@ int SrsRtmpConn::playing(SrsSource* source)
     SrsAutoFree(SrsConsumer, consumer);
     srs_verbose("consumer created success.");
     
-    rtmp->set_recv_timeout(SRS_CONSTS_RTMP_PULSE_TIMEOUT_US);
+    // use poll fd to manage the connection, read when active.
+    SrsPollFD poll_fd;
+    if ((ret = poll_fd.initialize(stfd)) != ERROR_SUCCESS) {
+        return ret;
+    }
     
-    SrsPithyPrint pithy_print(SRS_CONSTS_STAGE_PLAY_USER);
+    // TODO: FIXME: remove following.
+    //rtmp->set_recv_timeout(SRS_CONSTS_RTMP_PULSE_TIMEOUT_US);
+    rtmp->set_recv_timeout(ST_UTIME_NO_TIMEOUT);
+    rtmp->set_send_timeout(ST_UTIME_NO_TIMEOUT);
     
+    // initialize other components
+    SrsPithyPrint pithy_print(SRS_CONSTS_STAGE_PLAY_USER);
     SrsSharedPtrMessageArray msgs(SYS_MAX_PLAY_SEND_MSGS);
-
     bool user_specified_duration_to_stop = (req->duration > 0);
     int64_t starttime = -1;
     
@@ -530,7 +539,9 @@ int SrsRtmpConn::playing(SrsSource* source)
         pithy_print.elapse();
 
         // read from client.
-        if (true) {
+        if (poll_fd.active()) {
+            poll_fd.set_active(false);
+            
             SrsMessage* msg = NULL;
             ret = rtmp->recv_message(&msg);
             srs_verbose("play loop recv message. ret=%d", ret);
@@ -559,6 +570,13 @@ int SrsRtmpConn::playing(SrsSource* source)
             srs_error("get messages from consumer failed. ret=%d", ret);
             return ret;
         }
+        
+        // no data, sleep a while.
+        // for the poll_fd maybe not active, and no message.
+        // @see: https://github.com/winlinvip/simple-rtmp-server/issues/194
+        if (count <= 0) {
+            st_usleep(SRS_CONSTS_RTMP_PULSE_TIMEOUT_US);
+        }
 
         // reportable
         if (pithy_print.can_print()) {

@@ -44,6 +44,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <srs_app_source.hpp>
 #include <srs_app_utility.hpp>
 #include <srs_app_heartbeat.hpp>
+#include <srs_app_poll.hpp>
 
 // signal defines.
 #define SIGNAL_RELOAD SIGHUP
@@ -664,6 +665,14 @@ int SrsServer::do_cycle()
 {
     int ret = ERROR_SUCCESS;
     
+    // start the poll for play clients.
+    // performance issue, @see: https://github.com/winlinvip/simple-rtmp-server/issues/194
+    SrsPoll* poll = SrsPoll::instance();
+    if ((ret = poll->start()) != ERROR_SUCCESS) {
+        srs_error("start poll failed. ret=%d", ret);
+        return ret;
+    }
+    
     // find the max loop
     int max = srs_max(0, SRS_SYS_TIME_RESOLUTION_MS_TIMES);
     

@@ -185,6 +185,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #define ERROR_EDGE_VHOST_REMOVED            3039
 #define ERROR_HLS_AVC_TRY_OTHERS            3040
 #define ERROR_H264_API_NO_PREFIXED          3041
+#define ERROR_RTMP_POLL_FD_DUPLICATED       3042
 
 /**
 * whether the error code is an system control error.

@@ -92,6 +92,8 @@ file
 	..\app\srs_app_kbps.cpp,
 	..\app\srs_app_log.hpp,
 	..\app\srs_app_log.cpp,
+	..\app\srs_app_poll.hpp,
+	..\app\srs_app_poll.cpp,
 	..\app\srs_app_refer.hpp,
 	..\app\srs_app_refer.cpp,
 	..\app\srs_app_reload.hpp,