SmartPtr: Use shared ptr to manage GB objects. v6.0.126 (#4080)

The object relations: 

![gb](266e8a4e-3f1e-4805-8406-9008d6a63aa0)

Session manages SIP and Media object using shared resource or shared
ptr. Note that I actually use SrsExecutorCoroutine to delete the object
when each coroutine is done, because there is always a dedicate
coroutine for each object.

For SIP and Media object, they directly use the session by raw pointer,
it's safe because session always live longer than session and media
object.

---

Co-authored-by: Jacob Su <suzp1984@gmail.com>

trunk/doc/CHANGELOG.md

@@ -7,6 +7,7 @@ The changelog for SRS.
 <a name="v6-changes"></a>
 
 ## SRS 6.0 Changelog
+* v6.0, 2024-06-12, Merge [#4080](https://github.com/ossrs/srs/pull/4080): SmartPtr: Use shared ptr to manage GB objects. v6.0.126 (#4080)
 * v6.0, 2024-06-03, Merge [#4057](https://github.com/ossrs/srs/pull/4057): RTC: Support dropping h.264 SEI from NALUs. v6.0.125 (#4057)
 * v6.0, 2024-04-26, Merge [#4044](https://github.com/ossrs/srs/pull/4044): fix: correct SRS_ERRNO_MAP_HTTP duplicate error code. v6.0.124 (#4044)
 * v6.0, 2024-04-23, Merge [#4038](https://github.com/ossrs/srs/pull/4038): RTMP: Do not response publish start message if hooks fail. v6.0.123 (#4038)

trunk/src/app/srs_app_conn.cpp

@@ -413,28 +413,6 @@ void SrsResourceManager::dispose(ISrsResource* c)
     }
 }
 
-SrsLazySweepGc::SrsLazySweepGc()
-{
-}
-
-SrsLazySweepGc::~SrsLazySweepGc()
-{
-}
-
-srs_error_t SrsLazySweepGc::start()
-{
-    srs_error_t err = srs_success;
-    return err;
-}
-
-void SrsLazySweepGc::remove(SrsLazyObject* c)
-{
-    // TODO: FIXME: MUST lazy sweep.
-    srs_freep(c);
-}
-
-ISrsLazyGc* _srs_gc = NULL;
-
 ISrsExpire::ISrsExpire()
 {
 }

trunk/src/app/srs_app_conn.hpp

@@ -20,6 +20,7 @@
 #include <srs_protocol_kbps.hpp>
 #include <srs_app_reload.hpp>
 #include <srs_protocol_conn.hpp>
+#include <srs_core_autofree.hpp>
 
 class SrsWallClock;
 class SrsBuffer;
@@ -125,98 +126,66 @@ private:
     void dispose(ISrsResource* c);
 };
 
-// A simple lazy-sweep GC, just wait for a long time to delete the disposable resources.
+// This class implements the ISrsResource interface using a smart pointer, allowing the Manager to delete this
-class SrsLazySweepGc : public ISrsLazyGc
+// smart pointer resource, such as by implementing delayed release.
-{
-public:
-    SrsLazySweepGc();
-    virtual ~SrsLazySweepGc();
-public:
-    virtual srs_error_t start();
-    virtual void remove(SrsLazyObject* c);
-};
-
-extern ISrsLazyGc* _srs_gc;
-
-// A wrapper template for lazy-sweep resource.
-// See https://github.com/ossrs/srs/issues/3176#lazy-sweep
 //
-// Usage for resource which manages itself in coroutine cycle, see SrsLazyGbSession:
+// It embeds an SrsSharedPtr to provide the same interface, but it is not an inheritance relationship. Its usage
-//      class Resource {
+// is identical to SrsSharedPtr, but they cannot replace each other. They are not related and cannot be converted
-//      private:
+// to one another.
-//          SrsLazyObjectWrapper<Resource>* wrapper_;
-//      private:
-//          friend class SrsLazyObjectWrapper<Resource>;
-//          Resource(SrsLazyObjectWrapper<Resource>* wrapper) { wrapper_ = wrapper; }
-//      public:
-//          srs_error_t Resource::cycle() {
-//              srs_error_t err = do_cycle();
-//              _srs_gb_manager->remove(wrapper_);
-//              return err;
-//          }
-//      };
-//      SrsLazyObjectWrapper<Resource>* obj = new SrsLazyObjectWrapper<Resource>*();
-//      _srs_gb_manager->add(obj); // Add wrapper to resource manager.
-//      Start a coroutine to do obj->resource()->cycle().
 //
-// Usage for resource managed by other object:
+// Note that we don't need to implement the move constructor and move assignment operator, because we directly
-//      class Resource {
+// use SrsSharedPtr as instance member, so we can only copy it.
-//      private:
-//          friend class SrsLazyObjectWrapper<Resource>;
-//          Resource(SrsLazyObjectWrapper<Resource>* /*wrapper*/) {
-//          }
-//      };
-//      class Manager {
-//      private:
-//          SrsLazyObjectWrapper<Resource>* wrapper_;
-//      public:
-//          Manager() { wrapper_ = new SrsLazyObjectWrapper<Resource>(); }
-//          ~Manager() { srs_freep(wrapper_); }
-//      };
-//      Manager* manager = new Manager();
-//      srs_freep(manager);
 //
-// Note that under-layer resource are destroyed by _srs_gc, which is literally equal to srs_freep. However, the root
+// Usage:
-// wrapper might be managed by other resource manager, such as _srs_gb_manager for SrsLazyGbSession. Furthermore, other
+//      SrsSharedResource<MyClass>* ptr = new SrsSharedResource<MyClass>(new MyClass());
-// copied out wrappers might be freed by srs_freep. All are ok, because all wrapper and resources are simply normal
+//      (*ptr)->do_something();
-// object, so if you added to manager then you should use manager to remove it, and you can also directly delete it.
+//
+//      ISrsResourceManager* manager = ...;
+//      manager->remove(ptr);
 template<typename T>
-class SrsLazyObjectWrapper : public ISrsResource
+class SrsSharedResource : public ISrsResource
 {
 private:
-    T* resource_;
+    SrsSharedPtr<T> ptr_;
 public:
-    SrsLazyObjectWrapper() {
+    SrsSharedResource(T* ptr) : ptr_(ptr) {
-        init(new T(this));
     }
-    virtual ~SrsLazyObjectWrapper() {
+    SrsSharedResource(const SrsSharedResource<T>& cp) : ptr_(cp.ptr_) {
-        resource_->gc_dispose();
-        if (resource_->gc_ref() == 0) {
-            _srs_gc->remove(resource_);
     }
+    virtual ~SrsSharedResource() {
+    }
+public:
+    // Get the object.
+    T* get() {
+        return ptr_.get();
+    }
+    // Overload the -> operator.
+    T* operator->() {
+        return ptr_.operator->();
+    }
+    // The assign operator.
+    SrsSharedResource<T>& operator=(const SrsSharedResource<T>& cp) {
+        if (this != &cp) {
+            ptr_ = cp.ptr_;
+        }
+        return *this;
     }
 private:
-    SrsLazyObjectWrapper(T* resource) {
+    // Overload the * operator.
-        init(resource);
+    T& operator*() {
+        return ptr_.operator*();
     }
-    void init(T* resource) {
+    // Overload the bool operator.
-        resource_ = resource;
+    operator bool() const {
-        resource_->gc_use();
+        return ptr_.operator bool();
-    }
-public:
-    SrsLazyObjectWrapper<T>* copy() {
-        return new SrsLazyObjectWrapper<T>(resource_);
-    }
-    T* resource() {
-        return resource_;
     }
 // Interface ISrsResource
 public:
     virtual const SrsContextId& get_id() {
-        return resource_->get_id();
+        return ptr_->get_id();
     }
     virtual std::string desc() {
-        return resource_->desc();
+        return ptr_->desc();
     }
 };
 

trunk/src/app/srs_app_gb28181.cpp

@@ -70,11 +70,12 @@ std::string srs_sip_state(SrsGbSipState ostate, SrsGbSipState state)
     return srs_fmt("%s->%s", srs_gb_sip_state(ostate).c_str(), srs_gb_sip_state(state).c_str());
 }
 
-SrsLazyGbSession::SrsLazyGbSession(SrsLazyObjectWrapper<SrsLazyGbSession>* wrapper_root)
+SrsGbSession::SrsGbSession() : sip_(new SrsGbSipTcpConn()), media_(new SrsGbMediaTcpConn())
 {
-    wrapper_root_ = wrapper_root;
+    wrapper_ = NULL;
-    sip_ = new SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>();
+    owner_coroutine_ = NULL;
-    media_ = new SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>();
+    owner_cid_ = NULL;
+
     muxer_ = new SrsGbMuxer(this);
     state_ = SrsGbSessionStateInit;
 
@@ -102,41 +103,43 @@ SrsLazyGbSession::SrsLazyGbSession(SrsLazyObjectWrapper<SrsLazyGbSession>* wrapp
 
     cid_ = _srs_context->generate_id();
     _srs_context->set_id(cid_); // Also change current coroutine cid as session's.
-    trd_ = new SrsSTCoroutine("GBS", this, cid_);
 }
 
-SrsLazyGbSession::~SrsLazyGbSession()
+SrsGbSession::~SrsGbSession()
 {
-    srs_freep(trd_);
-    srs_freep(sip_);
-    srs_freep(media_);
     srs_freep(muxer_);
     srs_freep(ppp_);
 }
 
-srs_error_t SrsLazyGbSession::initialize(SrsConfDirective* conf)
+void SrsGbSession::setup(SrsConfDirective* conf)
 {
-    srs_error_t err = srs_success;
-
     pip_ = candidate_ = _srs_config->get_stream_caster_sip_candidate(conf);
     if (candidate_ == "*") {
         pip_ = srs_get_public_internet_address(true);
     }
 
     std::string output = _srs_config->get_stream_caster_output(conf);
-    if ((err = muxer_->initialize(output)) != srs_success) {
+    muxer_->setup(output);
-        return srs_error_wrap(err, "muxer");
-    }
 
     connecting_timeout_ = _srs_config->get_stream_caster_sip_timeout(conf);
     reinvite_wait_ = _srs_config->get_stream_caster_sip_reinvite(conf);
     srs_trace("Session: Start timeout=%dms, reinvite=%dms, candidate=%s, pip=%s, output=%s", srsu2msi(connecting_timeout_),
         srsu2msi(reinvite_wait_), candidate_.c_str(), pip_.c_str(), output.c_str());
-
-    return err;
 }
 
-void SrsLazyGbSession::on_ps_pack(SrsPackContext* ctx, SrsPsPacket* ps, const std::vector<SrsTsMessage*>& msgs)
+void SrsGbSession::setup_owner(SrsSharedResource<SrsGbSession>* wrapper, ISrsInterruptable* owner_coroutine, ISrsContextIdSetter* owner_cid)
+{
+    wrapper_ = wrapper;
+    owner_coroutine_ = owner_coroutine;
+    owner_cid_ = owner_cid;
+}
+
+void SrsGbSession::on_executor_done(ISrsInterruptable* executor)
+{
+    owner_coroutine_ = NULL;
+}
+
+void SrsGbSession::on_ps_pack(SrsPackContext* ctx, SrsPsPacket* ps, const std::vector<SrsTsMessage*>& msgs)
 {
     // Got a new context, that is new media transport.
     if (media_id_ != ctx->media_id_) {
@@ -195,57 +198,47 @@ void SrsLazyGbSession::on_ps_pack(SrsPackContext* ctx, SrsPsPacket* ps, const st
     }
 }
 
-void SrsLazyGbSession::on_sip_transport(SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>* sip)
+void SrsGbSession::on_sip_transport(SrsSharedResource<SrsGbSipTcpConn> sip)
 {
-    srs_freep(sip_);
+    sip_ = sip;
-    sip_ = sip->copy();
-
     // Change id of SIP and all its child coroutines.
-    sip_->resource()->set_cid(cid_);
+    sip_->set_cid(cid_);
 }
 
-SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>* SrsLazyGbSession::sip_transport()
+SrsSharedResource<SrsGbSipTcpConn> SrsGbSession::sip_transport()
 {
     return sip_;
 }
 
-void SrsLazyGbSession::on_media_transport(SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>* media)
+void SrsGbSession::on_media_transport(SrsSharedResource<SrsGbMediaTcpConn> media)
 {
-    srs_freep(media_);
+    media_ = media;
-    media_ = media->copy();
 
     // Change id of SIP and all its child coroutines.
-    media_->resource()->set_cid(cid_);
+    media_->set_cid(cid_);
 }
 
-std::string SrsLazyGbSession::pip()
+std::string SrsGbSession::pip()
 {
     return pip_;
 }
 
-srs_error_t SrsLazyGbSession::start()
+srs_error_t SrsGbSession::cycle()
 {
     srs_error_t err = srs_success;
 
-    if ((err = trd_->start()) != srs_success) {
+    // Update all context id to cid of session.
-        return srs_error_wrap(err, "coroutine");
+    _srs_context->set_id(cid_);
-    }
+    owner_cid_->set_cid(cid_);
+    sip_->set_cid(cid_);
+    media_->set_cid(cid_);
 
-    return err;
+    // Drive the session cycle.
-}
+    err = do_cycle();
-
-srs_error_t SrsLazyGbSession::cycle()
-{
-    srs_error_t err = do_cycle();
 
     // Interrupt the SIP and media transport when session terminated.
-    sip_->resource()->interrupt();
+    sip_->interrupt();
-    media_->resource()->interrupt();
+    media_->interrupt();
-
-    // Note that we added wrapper to manager, so we must free the wrapper, not this connection.
-    SrsLazyObjectWrapper<SrsLazyGbSession>* wrapper = wrapper_root_;
-    srs_assert(wrapper); // The creator wrapper MUST never be null, because we created it.
-    _srs_gb_manager->remove(wrapper);
 
     // success.
     if (err == srs_success) {
@@ -274,12 +267,13 @@ srs_error_t SrsLazyGbSession::cycle()
     return srs_success;
 }
 
-srs_error_t SrsLazyGbSession::do_cycle()
+srs_error_t SrsGbSession::do_cycle()
 {
     srs_error_t err = srs_success;
 
     while (true) {
-        if ((err = trd_->pull()) != srs_success) {
+        if (!owner_coroutine_) return err;
+        if ((err = owner_coroutine_->pull()) != srs_success) {
             return srs_error_wrap(err, "pull");
         }
 
@@ -287,7 +281,7 @@ srs_error_t SrsLazyGbSession::do_cycle()
         srs_usleep(SRS_GB_SESSION_DRIVE_INTERVAL);
 
         // Client send bye, we should dispose the session.
-        if (sip_->resource()->is_bye()) {
+        if (sip_->is_bye()) {
             return err;
         }
 
@@ -310,35 +304,33 @@ srs_error_t SrsLazyGbSession::do_cycle()
     return err;
 }
 
-srs_error_t SrsLazyGbSession::drive_state()
+srs_error_t SrsGbSession::drive_state()
 {
     srs_error_t err = srs_success;
 
     #define SRS_GB_CHANGE_STATE_TO(state) { \
         SrsGbSessionState ostate = set_state(state); \
-        srs_trace("Session: Change device=%s, state=%s", sip_->resource()->device_id().c_str(), \
+        srs_trace("Session: Change device=%s, state=%s", sip_->device_id().c_str(), \
             srs_gb_state(ostate, state_).c_str()); \
     }
 
     if (state_ == SrsGbSessionStateInit) {
         // Set to connecting, whatever media is connected or not, because the connecting state will handle it if media
         // is connected, so we don't need to handle it here.
-        if (sip_->resource()->is_registered()) {
+        if (sip_->is_registered()) {
             SRS_GB_CHANGE_STATE_TO(SrsGbSessionStateConnecting);
             connecting_starttime_ = srs_update_system_time();
         }
 
         // Invite if media is not connected.
-        if (sip_->resource()->is_registered() && !media_->resource()->is_connected()) {
+        if (sip_->is_registered() && !media_->is_connected()) {
             uint32_t ssrc = 0;
-            if ((err = sip_->resource()->invite_request(&ssrc)) != srs_success) {
+            if ((err = sip_->invite_request(&ssrc)) != srs_success) {
                 return srs_error_wrap(err, "invite");
             }
 
             // Now, we're able to query session by ssrc, for media packets.
-            SrsLazyObjectWrapper<SrsLazyGbSession>* wrapper = wrapper_root_;
+            _srs_gb_manager->add_with_fast_id(ssrc, wrapper_);
-            srs_assert(wrapper); // It MUST never be NULL, because this method is in the cycle of coroutine.
-            _srs_gb_manager->add_with_fast_id(ssrc, wrapper);
         }
     }
 
@@ -349,32 +341,32 @@ srs_error_t SrsLazyGbSession::drive_state()
             }
 
             srs_trace("Session: Connecting timeout, nn=%d, state=%s, sip=%s, media=%d", nn_timeout_, srs_gb_session_state(state_).c_str(),
-                srs_gb_sip_state(sip_->resource()->state()).c_str(), media_->resource()->is_connected());
+                srs_gb_sip_state(sip_->state()).c_str(), media_->is_connected());
-            sip_->resource()->reset_to_register();
+            sip_->reset_to_register();
             SRS_GB_CHANGE_STATE_TO(SrsGbSessionStateInit);
         }
 
-        if (sip_->resource()->is_stable() && media_->resource()->is_connected()) {
+        if (sip_->is_stable() && media_->is_connected()) {
             SRS_GB_CHANGE_STATE_TO(SrsGbSessionStateEstablished);
         }
     }
 
     if (state_ == SrsGbSessionStateEstablished) {
-        if (sip_->resource()->is_bye()) {
+        if (sip_->is_bye()) {
             srs_trace("Session: Dispose for client bye");
             return err;
         }
 
         // When media disconnected, we wait for a while then reinvite.
-        if (!media_->resource()->is_connected()) {
+        if (!media_->is_connected()) {
             if (!reinviting_starttime_) {
                 reinviting_starttime_ = srs_update_system_time();
             }
             if (srs_get_system_time() - reinviting_starttime_ > reinvite_wait_) {
                 reinviting_starttime_ = 0;
                 srs_trace("Session: Re-invite for disconnect, state=%s, sip=%s, media=%d", srs_gb_session_state(state_).c_str(),
-                    srs_gb_sip_state(sip_->resource()->state()).c_str(), media_->resource()->is_connected());
+                    srs_gb_sip_state(sip_->state()).c_str(), media_->is_connected());
-                sip_->resource()->reset_to_register();
+                sip_->reset_to_register();
                 SRS_GB_CHANGE_STATE_TO(SrsGbSessionStateInit);
             }
         }
@@ -383,19 +375,19 @@ srs_error_t SrsLazyGbSession::drive_state()
     return err;
 }
 
-SrsGbSessionState SrsLazyGbSession::set_state(SrsGbSessionState v)
+SrsGbSessionState SrsGbSession::set_state(SrsGbSessionState v)
 {
     SrsGbSessionState state = state_;
     state_ = v;
     return state;
 }
 
-const SrsContextId& SrsLazyGbSession::get_id()
+const SrsContextId& SrsGbSession::get_id()
 {
     return cid_;
 }
 
-std::string SrsLazyGbSession::desc()
+std::string SrsGbSession::desc()
 {
     return "GBS";
 }
@@ -463,27 +455,33 @@ srs_error_t SrsGbListener::on_tcp_client(ISrsListener* listener, srs_netfd_t stf
 
     // Handle TCP connections.
     if (listener == sip_listener_) {
-        SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>* conn = new SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>();
+        SrsGbSipTcpConn* raw_conn = new SrsGbSipTcpConn();
-        SrsLazyGbSipTcpConn* resource = dynamic_cast<SrsLazyGbSipTcpConn*>(conn->resource());
+        raw_conn->setup(conf_, sip_listener_, media_listener_, stfd);
-        resource->setup(conf_, sip_listener_, media_listener_, stfd);
 
-        if ((err = resource->start()) != srs_success) {
+        SrsSharedResource<SrsGbSipTcpConn>* conn = new SrsSharedResource<SrsGbSipTcpConn>(raw_conn);
-            srs_freep(conn);
+        _srs_gb_manager->add(conn, NULL);
+
+        SrsExecutorCoroutine* executor = new SrsExecutorCoroutine(_srs_gb_manager, conn, raw_conn, raw_conn);
+        raw_conn->setup_owner(conn, executor, executor);
+
+        if ((err = executor->start()) != srs_success) {
+            srs_freep(executor);
             return srs_error_wrap(err, "gb sip");
         }
-
-        _srs_gb_manager->add(conn, NULL);
     } else if (listener == media_listener_) {
-        SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>* conn = new SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>();
+        SrsGbMediaTcpConn* raw_conn = new SrsGbMediaTcpConn();
-        SrsLazyGbMediaTcpConn* resource = dynamic_cast<SrsLazyGbMediaTcpConn*>(conn->resource());
+        raw_conn->setup(stfd);
-        resource->setup(stfd);
 
-        if ((err = resource->start()) != srs_success) {
+        SrsSharedResource<SrsGbMediaTcpConn>* conn = new SrsSharedResource<SrsGbMediaTcpConn>(raw_conn);
-            srs_freep(conn);
+        _srs_gb_manager->add(conn, NULL);
+
+        SrsExecutorCoroutine* executor = new SrsExecutorCoroutine(_srs_gb_manager, conn, raw_conn, raw_conn);
+        raw_conn->setup_owner(conn, executor, executor);
+
+        if ((err = executor->start()) != srs_success) {
+            srs_freep(executor);
             return srs_error_wrap(err, "gb media");
         }
-
-        _srs_gb_manager->add(conn, NULL);
     } else {
         srs_warn("GB: Ignore TCP client");
         srs_close_stfd(stfd);
@@ -492,9 +490,13 @@ srs_error_t SrsGbListener::on_tcp_client(ISrsListener* listener, srs_netfd_t stf
     return err;
 }
 
-SrsLazyGbSipTcpConn::SrsLazyGbSipTcpConn(SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>* wrapper_root)
+SrsGbSipTcpConn::SrsGbSipTcpConn()
 {
-    wrapper_root_ = wrapper_root;
+    wrapper_ = NULL;
+    owner_coroutine_ = NULL;
+    owner_cid_ = NULL;
+    cid_ = _srs_context->get_id();
+
     session_ = NULL;
     state_ = SrsGbSipStateInit;
     register_ = new SrsSipMessage();
@@ -507,54 +509,62 @@ SrsLazyGbSipTcpConn::SrsLazyGbSipTcpConn(SrsLazyObjectWrapper<SrsLazyGbSipTcpCon
     conn_ = NULL;
     receiver_ = NULL;
     sender_ = NULL;
-
-    trd_ = new SrsSTCoroutine("sip", this);
 }
 
-SrsLazyGbSipTcpConn::~SrsLazyGbSipTcpConn()
+SrsGbSipTcpConn::~SrsGbSipTcpConn()
 {
-    srs_freep(trd_);
     srs_freep(receiver_);
     srs_freep(sender_);
     srs_freep(conn_);
-    srs_freep(session_);
     srs_freep(register_);
     srs_freep(invite_ok_);
     srs_freep(conf_);
 }
 
-void SrsLazyGbSipTcpConn::setup(SrsConfDirective* conf, SrsTcpListener* sip, SrsTcpListener* media, srs_netfd_t stfd)
+void SrsGbSipTcpConn::setup(SrsConfDirective* conf, SrsTcpListener* sip, SrsTcpListener* media, srs_netfd_t stfd)
 {
     srs_freep(conf_);
     conf_ = conf->copy();
 
-    session_ = NULL;
     sip_listener_ = sip;
     media_listener_ = media;
     conn_ = new SrsTcpConnection(stfd);
-    receiver_ = new SrsLazyGbSipTcpReceiver(this, conn_);
+    receiver_ = new SrsGbSipTcpReceiver(this, conn_);
-    sender_ = new SrsLazyGbSipTcpSender(conn_);
+    sender_ = new SrsGbSipTcpSender(conn_);
 }
 
-std::string SrsLazyGbSipTcpConn::device_id()
+void SrsGbSipTcpConn::setup_owner(SrsSharedResource<SrsGbSipTcpConn>* wrapper, ISrsInterruptable* owner_coroutine, ISrsContextIdSetter* owner_cid)
+{
+    wrapper_ = wrapper;
+    owner_coroutine_ = owner_coroutine;
+    owner_cid_ = owner_cid;
+}
+
+void SrsGbSipTcpConn::on_executor_done(ISrsInterruptable* executor)
+{
+    owner_coroutine_ = NULL;
+}
+
+std::string SrsGbSipTcpConn::device_id()
 {
     return register_->device_id();
 }
 
-void SrsLazyGbSipTcpConn::set_cid(const SrsContextId& cid)
+void SrsGbSipTcpConn::set_cid(const SrsContextId& cid)
 {
-    trd_->set_cid(cid);
+    if (owner_cid_) owner_cid_->set_cid(cid);
     receiver_->set_cid(cid);
     sender_->set_cid(cid);
+    cid_ = cid;
 }
 
-void SrsLazyGbSipTcpConn::query_ports(int* sip, int* media)
+void SrsGbSipTcpConn::query_ports(int* sip, int* media)
 {
     if (sip) *sip = sip_listener_->port();
     if (media) *media = media_listener_->port();
 }
 
-srs_error_t SrsLazyGbSipTcpConn::on_sip_message(SrsSipMessage* msg)
+srs_error_t SrsGbSipTcpConn::on_sip_message(SrsSipMessage* msg)
 {
     srs_error_t err = srs_success;
 
@@ -603,7 +613,7 @@ srs_error_t SrsLazyGbSipTcpConn::on_sip_message(SrsSipMessage* msg)
     return err;
 }
 
-void SrsLazyGbSipTcpConn::enqueue_sip_message(SrsSipMessage* msg)
+void SrsGbSipTcpConn::enqueue_sip_message(SrsSipMessage* msg)
 {
     // Drive state machine when enqueue message.
     drive_state(msg);
@@ -612,7 +622,7 @@ void SrsLazyGbSipTcpConn::enqueue_sip_message(SrsSipMessage* msg)
     sender_->enqueue(msg);
 }
 
-void SrsLazyGbSipTcpConn::drive_state(SrsSipMessage* msg)
+void SrsGbSipTcpConn::drive_state(SrsSipMessage* msg)
 {
     srs_error_t err = srs_success;
 
@@ -669,7 +679,7 @@ void SrsLazyGbSipTcpConn::drive_state(SrsSipMessage* msg)
     }
 }
 
-void SrsLazyGbSipTcpConn::register_response(SrsSipMessage* msg)
+void SrsGbSipTcpConn::register_response(SrsSipMessage* msg)
 {
     SrsSipMessage* res = new SrsSipMessage();
 
@@ -686,7 +696,7 @@ void SrsLazyGbSipTcpConn::register_response(SrsSipMessage* msg)
     enqueue_sip_message(res);
 }
 
-void SrsLazyGbSipTcpConn::message_response(SrsSipMessage* msg, http_status status)
+void SrsGbSipTcpConn::message_response(SrsSipMessage* msg, http_status status)
 {
     SrsSipMessage* res = new SrsSipMessage();
 
@@ -701,9 +711,9 @@ void SrsLazyGbSipTcpConn::message_response(SrsSipMessage* msg, http_status statu
     enqueue_sip_message(res);
 }
 
-void SrsLazyGbSipTcpConn::invite_ack(SrsSipMessage* msg)
+void SrsGbSipTcpConn::invite_ack(SrsSipMessage* msg)
 {
-    string pip = session_->resource()->pip(); // Parse from CANDIDATE
+    string pip = session_->pip(); // Parse from CANDIDATE
     int sip_port; query_ports(&sip_port, NULL);
     string gb_device_id = srs_fmt("sip:%s@%s", msg->to_address_user_.c_str(), msg->to_address_host_.c_str());
     string branch = srs_random_str(6);
@@ -722,7 +732,7 @@ void SrsLazyGbSipTcpConn::invite_ack(SrsSipMessage* msg)
     enqueue_sip_message(req);
 }
 
-void SrsLazyGbSipTcpConn::bye_response(SrsSipMessage* msg)
+void SrsGbSipTcpConn::bye_response(SrsSipMessage* msg)
 {
     SrsSipMessage* res = new SrsSipMessage();
 
@@ -737,7 +747,7 @@ void SrsLazyGbSipTcpConn::bye_response(SrsSipMessage* msg)
     enqueue_sip_message(res);
 }
 
-srs_error_t SrsLazyGbSipTcpConn::invite_request(uint32_t* pssrc)
+srs_error_t SrsGbSipTcpConn::invite_request(uint32_t* pssrc)
 {
     srs_error_t err = srs_success;
 
@@ -765,7 +775,7 @@ srs_error_t SrsLazyGbSipTcpConn::invite_request(uint32_t* pssrc)
         if (pssrc) *pssrc = ssrc_v_;
     }
 
-    string pip = session_->resource()->pip(); // Parse from CANDIDATE
+    string pip = session_->pip(); // Parse from CANDIDATE
     int sip_port, media_port; query_ports(&sip_port, &media_port);
     string srs_device_id = srs_fmt("sip:%s@%s", register_->request_uri_user_.c_str(), register_->request_uri_host_.c_str());
     string gb_device_id = srs_fmt("sip:%s@%s", register_->from_address_user_.c_str(), register_->from_address_host_.c_str());
@@ -834,63 +844,59 @@ srs_error_t SrsLazyGbSipTcpConn::invite_request(uint32_t* pssrc)
     return err;
 }
 
-void SrsLazyGbSipTcpConn::interrupt()
+void SrsGbSipTcpConn::interrupt()
 {
     receiver_->interrupt();
     sender_->interrupt();
-    trd_->interrupt();
+    if (owner_coroutine_) owner_coroutine_->interrupt();
 }
 
-SrsGbSipState SrsLazyGbSipTcpConn::state()
+SrsGbSipState SrsGbSipTcpConn::state()
 {
     return state_;
 }
 
-void SrsLazyGbSipTcpConn::reset_to_register()
+void SrsGbSipTcpConn::reset_to_register()
 {
     state_ = SrsGbSipStateRegistered;
 }
 
-bool SrsLazyGbSipTcpConn::is_registered()
+bool SrsGbSipTcpConn::is_registered()
 {
     return state_ >= SrsGbSipStateRegistered && state_ <= SrsGbSipStateStable;
 }
 
-bool SrsLazyGbSipTcpConn::is_stable()
+bool SrsGbSipTcpConn::is_stable()
 {
     return state_ == SrsGbSipStateStable;
 }
 
-bool SrsLazyGbSipTcpConn::is_bye()
+bool SrsGbSipTcpConn::is_bye()
 {
     return state_ == SrsGbSipStateBye;
 }
 
-SrsGbSipState SrsLazyGbSipTcpConn::set_state(SrsGbSipState v)
+SrsGbSipState SrsGbSipTcpConn::set_state(SrsGbSipState v)
 {
     SrsGbSipState state = state_;
     state_ = v;
     return state;
 }
 
-const SrsContextId& SrsLazyGbSipTcpConn::get_id()
+const SrsContextId& SrsGbSipTcpConn::get_id()
 {
-    return trd_->cid();
+    return cid_;
 }
 
-std::string SrsLazyGbSipTcpConn::desc()
+std::string SrsGbSipTcpConn::desc()
 {
     return "GB-SIP-TCP";
 }
 
-srs_error_t SrsLazyGbSipTcpConn::start()
+srs_error_t SrsGbSipTcpConn::cycle()
 {
     srs_error_t err = srs_success;
 
-    if ((err = trd_->start()) != srs_success) {
-        return srs_error_wrap(err, "sip");
-    }
-
     if ((err = receiver_->start()) != srs_success) {
         return srs_error_wrap(err, "receiver");
     }
@@ -899,22 +905,13 @@ srs_error_t SrsLazyGbSipTcpConn::start()
         return srs_error_wrap(err, "sender");
     }
 
-    return err;
+    // Wait for the SIP connection to be terminated.
-}
+    err = do_cycle();
-
-srs_error_t SrsLazyGbSipTcpConn::cycle()
-{
-    srs_error_t err = do_cycle();
 
     // Interrupt the receiver and sender coroutine.
     receiver_->interrupt();
     sender_->interrupt();
 
-    // Note that we added wrapper to manager, so we must free the wrapper, not this connection.
-    SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>* wrapper = wrapper_root_;
-    srs_assert(wrapper); // The creator wrapper MUST never be null, because we created it.
-    _srs_gb_manager->remove(wrapper);
-
     // success.
     if (err == srs_success) {
         srs_trace("client finished.");
@@ -942,23 +939,23 @@ srs_error_t SrsLazyGbSipTcpConn::cycle()
     return srs_success;
 }
 
-srs_error_t SrsLazyGbSipTcpConn::do_cycle()
+srs_error_t SrsGbSipTcpConn::do_cycle()
 {
     srs_error_t err = srs_success;
 
     while (true) {
-        if ((err = trd_->pull()) != srs_success) {
+        if (!owner_coroutine_) return err;
+        if ((err = owner_coroutine_->pull()) != srs_success) {
             return srs_error_wrap(err, "pull");
         }
 
-        // TODO: Handle other messages.
         srs_usleep(SRS_UTIME_NO_TIMEOUT);
     }
 
     return err;
 }
 
-srs_error_t SrsLazyGbSipTcpConn::bind_session(SrsSipMessage* msg, SrsLazyObjectWrapper<SrsLazyGbSession>** psession)
+srs_error_t SrsGbSipTcpConn::bind_session(SrsSipMessage* msg, SrsGbSession** psession)
 {
     srs_error_t err = srs_success;
 
@@ -968,32 +965,29 @@ srs_error_t SrsLazyGbSipTcpConn::bind_session(SrsSipMessage* msg, SrsLazyObjectW
     // Only create session for REGISTER request.
     if (msg->type_ != HTTP_REQUEST || msg->method_ != HTTP_REGISTER) return err;
 
-    // The lazy-sweep wrapper for this resource.
-    SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>* wrapper = wrapper_root_;
-    srs_assert(wrapper); // It MUST never be NULL, because this method is in the cycle of coroutine of receiver.
-
     // Find exists session for register, might be created by another object and still alive.
-    SrsLazyObjectWrapper<SrsLazyGbSession>* session = dynamic_cast<SrsLazyObjectWrapper<SrsLazyGbSession>*>(_srs_gb_manager->find_by_id(device));
+    SrsSharedResource<SrsGbSession>* session = dynamic_cast<SrsSharedResource<SrsGbSession>*>(_srs_gb_manager->find_by_id(device));
+    SrsGbSession* raw_session = session ? (*session).get() : NULL;
     if (!session) {
         // Create new GB session.
-        session = new SrsLazyObjectWrapper<SrsLazyGbSession>();
+        raw_session = new SrsGbSession();
-
+        raw_session->setup(conf_);
-        if ((err = session->resource()->initialize(conf_)) != srs_success) {
-            srs_freep(session);
-            return srs_error_wrap(err, "initialize");
-        }
-
-        if ((err = session->resource()->start()) != srs_success) {
-            srs_freep(session);
-            return srs_error_wrap(err, "start");
-        }
 
+        session = new SrsSharedResource<SrsGbSession>(raw_session);
         _srs_gb_manager->add_with_id(device, session);
+
+        SrsExecutorCoroutine* executor = new SrsExecutorCoroutine(_srs_gb_manager, session, raw_session, raw_session);
+        raw_session->setup_owner(session, executor, executor);
+
+        if ((err = executor->start()) != srs_success) {
+            srs_freep(executor);
+            return srs_error_wrap(err, "gb session");
+        }
     }
 
     // Try to load state from previous SIP connection.
-    SrsLazyGbSipTcpConn* pre = dynamic_cast<SrsLazyGbSipTcpConn*>(session->resource()->sip_transport()->resource());
+    SrsSharedResource<SrsGbSipTcpConn> pre = raw_session->sip_transport();
-    if (pre) {
+    if (pre.get() && pre.get() != this) {
         state_ = pre->state_;
         ssrc_str_ = pre->ssrc_str_;
         ssrc_v_ = pre->ssrc_v_;
@@ -1001,36 +995,36 @@ srs_error_t SrsLazyGbSipTcpConn::bind_session(SrsSipMessage* msg, SrsLazyObjectW
         srs_freep(invite_ok_); invite_ok_ = pre->invite_ok_->copy();
     }
 
-    // Notice SIP session to use current SIP connection.
+    // Notice session to use current SIP connection.
-    session->resource()->on_sip_transport(wrapper);
+    raw_session->on_sip_transport(*wrapper_);
-    *psession = session->copy();
+    *psession = raw_session;
 
     return err;
 }
 
-SrsLazyGbSipTcpReceiver::SrsLazyGbSipTcpReceiver(SrsLazyGbSipTcpConn* sip, SrsTcpConnection* conn)
+SrsGbSipTcpReceiver::SrsGbSipTcpReceiver(SrsGbSipTcpConn* sip, SrsTcpConnection* conn)
 {
     sip_ = sip;
     conn_ = conn;
     trd_ = new SrsSTCoroutine("sip-receiver", this);
 }
 
-SrsLazyGbSipTcpReceiver::~SrsLazyGbSipTcpReceiver()
+SrsGbSipTcpReceiver::~SrsGbSipTcpReceiver()
 {
     srs_freep(trd_);
 }
 
-void SrsLazyGbSipTcpReceiver::interrupt()
+void SrsGbSipTcpReceiver::interrupt()
 {
     trd_->interrupt();
 }
 
-void SrsLazyGbSipTcpReceiver::set_cid(const SrsContextId& cid)
+void SrsGbSipTcpReceiver::set_cid(const SrsContextId& cid)
 {
     trd_->set_cid(cid);
 }
 
-srs_error_t SrsLazyGbSipTcpReceiver::start()
+srs_error_t SrsGbSipTcpReceiver::start()
 {
     srs_error_t err = srs_success;
 
@@ -1041,7 +1035,7 @@ srs_error_t SrsLazyGbSipTcpReceiver::start()
     return err;
 }
 
-srs_error_t SrsLazyGbSipTcpReceiver::cycle()
+srs_error_t SrsGbSipTcpReceiver::cycle()
 {
     srs_error_t err = do_cycle();
 
@@ -1053,7 +1047,7 @@ srs_error_t SrsLazyGbSipTcpReceiver::cycle()
     return err;
 }
 
-srs_error_t SrsLazyGbSipTcpReceiver::do_cycle()
+srs_error_t SrsGbSipTcpReceiver::do_cycle()
 {
     srs_error_t err = srs_success;
 
@@ -1092,14 +1086,14 @@ srs_error_t SrsLazyGbSipTcpReceiver::do_cycle()
     return err;
 }
 
-SrsLazyGbSipTcpSender::SrsLazyGbSipTcpSender(SrsTcpConnection* conn)
+SrsGbSipTcpSender::SrsGbSipTcpSender(SrsTcpConnection* conn)
 {
     conn_ = conn;
     wait_ = srs_cond_new();
     trd_ = new SrsSTCoroutine("sip-sender", this);
 }
 
-SrsLazyGbSipTcpSender::~SrsLazyGbSipTcpSender()
+SrsGbSipTcpSender::~SrsGbSipTcpSender()
 {
     srs_freep(trd_);
     srs_cond_destroy(wait_);
@@ -1110,23 +1104,23 @@ SrsLazyGbSipTcpSender::~SrsLazyGbSipTcpSender()
     }
 }
 
-void SrsLazyGbSipTcpSender::enqueue(SrsSipMessage* msg)
+void SrsGbSipTcpSender::enqueue(SrsSipMessage* msg)
 {
     msgs_.push_back(msg);
     srs_cond_signal(wait_);
 }
 
-void SrsLazyGbSipTcpSender::interrupt()
+void SrsGbSipTcpSender::interrupt()
 {
     trd_->interrupt();
 }
 
-void SrsLazyGbSipTcpSender::set_cid(const SrsContextId& cid)
+void SrsGbSipTcpSender::set_cid(const SrsContextId& cid)
 {
     trd_->set_cid(cid);
 }
 
-srs_error_t SrsLazyGbSipTcpSender::start()
+srs_error_t SrsGbSipTcpSender::start()
 {
     srs_error_t err = srs_success;
 
@@ -1137,7 +1131,7 @@ srs_error_t SrsLazyGbSipTcpSender::start()
     return err;
 }
 
-srs_error_t SrsLazyGbSipTcpSender::cycle()
+srs_error_t SrsGbSipTcpSender::cycle()
 {
     srs_error_t err = do_cycle();
 
@@ -1149,7 +1143,7 @@ srs_error_t SrsLazyGbSipTcpSender::cycle()
     return err;
 }
 
-srs_error_t SrsLazyGbSipTcpSender::do_cycle()
+srs_error_t SrsGbSipTcpSender::do_cycle()
 {
     srs_error_t err = srs_success;
 
@@ -1219,71 +1213,74 @@ ISrsPsPackHandler::~ISrsPsPackHandler()
 {
 }
 
-SrsLazyGbMediaTcpConn::SrsLazyGbMediaTcpConn(SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>* wrapper_root)
+SrsGbMediaTcpConn::SrsGbMediaTcpConn()
 {
-    wrapper_root_ = wrapper_root;
     pack_ = new SrsPackContext(this);
-    trd_ = new SrsSTCoroutine("media", this);
     buffer_ = new uint8_t[65535];
     conn_ = NULL;
 
+    wrapper_ = NULL;
+    owner_coroutine_ = NULL;
+    owner_cid_ = NULL;
+    cid_ = _srs_context->get_id();
+
     session_ = NULL;
     connected_ = false;
     nn_rtcp_ = 0;
 }
 
-SrsLazyGbMediaTcpConn::~SrsLazyGbMediaTcpConn()
+SrsGbMediaTcpConn::~SrsGbMediaTcpConn()
 {
-    srs_freep(trd_);
     srs_freep(conn_);
     srs_freepa(buffer_);
     srs_freep(pack_);
-    srs_freep(session_);
 }
 
-void SrsLazyGbMediaTcpConn::setup(srs_netfd_t stfd)
+void SrsGbMediaTcpConn::setup(srs_netfd_t stfd)
 {
     srs_freep(conn_);
     conn_ = new SrsTcpConnection(stfd);
 }
 
-bool SrsLazyGbMediaTcpConn::is_connected()
+void SrsGbMediaTcpConn::setup_owner(SrsSharedResource<SrsGbMediaTcpConn>* wrapper, ISrsInterruptable* owner_coroutine, ISrsContextIdSetter* owner_cid)
+{
+    wrapper_ = wrapper;
+    owner_coroutine_ = owner_coroutine;
+    owner_cid_ = owner_cid;
+}
+
+void SrsGbMediaTcpConn::on_executor_done(ISrsInterruptable* executor)
+{
+    owner_coroutine_ = NULL;
+}
+
+bool SrsGbMediaTcpConn::is_connected()
 {
     return connected_;
 }
 
-void SrsLazyGbMediaTcpConn::interrupt()
+void SrsGbMediaTcpConn::interrupt()
 {
-    trd_->interrupt();
+    if (owner_coroutine_) owner_coroutine_->interrupt();
 }
 
-void SrsLazyGbMediaTcpConn::set_cid(const SrsContextId& cid)
+void SrsGbMediaTcpConn::set_cid(const SrsContextId& cid)
 {
-    trd_->set_cid(cid);
+    if (owner_cid_) owner_cid_->set_cid(cid);
+    cid_ = cid;
 }
 
-const SrsContextId& SrsLazyGbMediaTcpConn::get_id()
+const SrsContextId& SrsGbMediaTcpConn::get_id()
 {
-    return _srs_context->get_id();
+    return cid_;
 }
 
-std::string SrsLazyGbMediaTcpConn::desc()
+std::string SrsGbMediaTcpConn::desc()
 {
     return "GB-Media-TCP";
 }
 
-srs_error_t SrsLazyGbMediaTcpConn::start()
+srs_error_t SrsGbMediaTcpConn::cycle()
-{
-    srs_error_t err = srs_success;
-
-    if ((err = trd_->start()) != srs_success) {
-        return srs_error_wrap(err, "coroutine");
-    }
-
-    return err;
-}
-
-srs_error_t SrsLazyGbMediaTcpConn::cycle()
 {
     srs_error_t err = do_cycle();
 
@@ -1295,11 +1292,6 @@ srs_error_t SrsLazyGbMediaTcpConn::cycle()
     connected_ = false;
     srs_trace("PS: Media disconnect, code=%d", srs_error_code(err));
 
-    // Note that we added wrapper to manager, so we must free the wrapper, not this connection.
-    SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>* wrapper = wrapper_root_;
-    srs_assert(wrapper); // The creator wrapper MUST never be null, because we created it.
-    _srs_gb_manager->remove(wrapper);
-
     // success.
     if (err == srs_success) {
         srs_trace("client finished.");
@@ -1327,7 +1319,7 @@ srs_error_t SrsLazyGbMediaTcpConn::cycle()
     return srs_success;
 }
 
-srs_error_t SrsLazyGbMediaTcpConn::do_cycle()
+srs_error_t SrsGbMediaTcpConn::do_cycle()
 {
     srs_error_t err = srs_success;
 
@@ -1341,7 +1333,8 @@ srs_error_t SrsLazyGbMediaTcpConn::do_cycle()
     uint32_t reserved = 0;
 
     for (;;) {
-        if ((err = trd_->pull()) != srs_success) {
+        if (!owner_coroutine_) return err;
+        if ((err = owner_coroutine_->pull()) != srs_success) {
             return srs_error_wrap(err, "pull");
         }
 
@@ -1426,7 +1419,7 @@ srs_error_t SrsLazyGbMediaTcpConn::do_cycle()
     return err;
 }
 
-srs_error_t SrsLazyGbMediaTcpConn::on_ps_pack(SrsPsPacket* ps, const std::vector<SrsTsMessage*>& msgs)
+srs_error_t SrsGbMediaTcpConn::on_ps_pack(SrsPsPacket* ps, const std::vector<SrsTsMessage*>& msgs)
 {
     srs_error_t err = srs_success;
 
@@ -1437,7 +1430,7 @@ srs_error_t SrsLazyGbMediaTcpConn::on_ps_pack(SrsPsPacket* ps, const std::vector
     }
 
     // Notify session about the media pack.
-    session_->resource()->on_ps_pack(pack_, ps, msgs);
+    session_->on_ps_pack(pack_, ps, msgs);
 
     //for (vector<SrsTsMessage*>::const_iterator it = msgs.begin(); it != msgs.end(); ++it) {
     //    SrsTsMessage* msg = *it;
@@ -1450,23 +1443,22 @@ srs_error_t SrsLazyGbMediaTcpConn::on_ps_pack(SrsPsPacket* ps, const std::vector
     return err;
 }
 
-srs_error_t SrsLazyGbMediaTcpConn::bind_session(uint32_t ssrc, SrsLazyObjectWrapper<SrsLazyGbSession>** psession)
+srs_error_t SrsGbMediaTcpConn::bind_session(uint32_t ssrc, SrsGbSession** psession)
 {
     srs_error_t err = srs_success;
 
     if (!ssrc) return err;
 
-    // The lazy-sweep wrapper for this resource.
-    SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>* wrapper = wrapper_root_;
-    srs_assert(wrapper); // It MUST never be NULL, because this method is in the cycle of coroutine.
-
     // Find exists session for register, might be created by another object and still alive.
-    SrsLazyObjectWrapper<SrsLazyGbSession>* session = dynamic_cast<SrsLazyObjectWrapper<SrsLazyGbSession>*>(_srs_gb_manager->find_by_fast_id(ssrc));
+    SrsSharedResource<SrsGbSession>* session = dynamic_cast<SrsSharedResource<SrsGbSession>*>(_srs_gb_manager->find_by_fast_id(ssrc));
     if (!session) return err;
 
-    _srs_gb_manager->add_with_fast_id(ssrc, session);
+    SrsGbSession* raw_session = (*session).get();
-    session->resource()->on_media_transport(wrapper);
+    srs_assert(raw_session);
-    *psession = session->copy();
+
+    // Notice session to use current media connection.
+    raw_session->on_media_transport(*wrapper_);
+    *psession = raw_session;
 
     return err;
 }
@@ -1545,7 +1537,7 @@ SrsSharedPtrMessage* SrsMpegpsQueue::dequeue()
     return NULL;
 }
 
-SrsGbMuxer::SrsGbMuxer(SrsLazyGbSession* session)
+SrsGbMuxer::SrsGbMuxer(SrsGbSession* session)
 {
     sdk_ = NULL;
     session_ = session;
@@ -1580,13 +1572,9 @@ SrsGbMuxer::~SrsGbMuxer()
     srs_freep(pprint_);
 }
 
-srs_error_t SrsGbMuxer::initialize(std::string output)
+void SrsGbMuxer::setup(std::string output)
 {
-    srs_error_t err = srs_success;
-
     output_ = output;
-
-    return err;
 }
 
 srs_error_t SrsGbMuxer::on_ts_message(SrsTsMessage* msg)
@@ -2095,7 +2083,7 @@ srs_error_t SrsGbMuxer::connect()
     // Cleanup the data before connect again.
     close();
 
-    string url = srs_string_replace(output_, "[stream]", session_->sip_transport()->resource()->device_id());
+    string url = srs_string_replace(output_, "[stream]", session_->sip_transport()->device_id());
     srs_trace("Muxer: Convert GB to RTMP %s", url.c_str());
 
     srs_utime_t cto = SRS_CONSTS_RTMP_TIMEOUT;

trunk/src/app/srs_app_gb28181.hpp

@@ -26,11 +26,11 @@ class SrsCoroutine;
 class SrsPackContext;
 class SrsBuffer;
 class SrsSipMessage;
-class SrsLazyGbSession;
+class SrsGbSession;
-class SrsLazyGbSipTcpConn;
+class SrsGbSipTcpConn;
-class SrsLazyGbMediaTcpConn;
+class SrsGbMediaTcpConn;
-class SrsLazyGbSipTcpReceiver;
+class SrsGbSipTcpReceiver;
-class SrsLazyGbSipTcpSender;
+class SrsGbSipTcpSender;
 class SrsAlonePithyPrint;
 class SrsGbMuxer;
 class SrsSimpleRtmpClient;
@@ -51,7 +51,7 @@ class SrsRawAacStream;
 // established:
 //      init: media is not connected.
 //      dispose session: sip is bye.
-// Please see SrsLazyGbSession::drive_state for detail.
+// Please see SrsGbSession::drive_state for detail.
 enum SrsGbSessionState
 {
     SrsGbSessionStateInit = 0,
@@ -76,7 +76,7 @@ std::string srs_gb_session_state(SrsGbSessionState state);
 //      to bye: Got bye SIP message from device.
 // re-inviting:
 //      to inviting: Got bye OK response from deivce.
-// Please see SrsLazyGbSipTcpConn::drive_state for detail.
+// Please see SrsGbSipTcpConn::drive_state for detail.
 enum SrsGbSipState
 {
     SrsGbSipStateInit = 0,
@@ -90,16 +90,23 @@ enum SrsGbSipState
 std::string srs_gb_sip_state(SrsGbSipState state);
 
 // The main logic object for GB, the session.
-class SrsLazyGbSession : public SrsLazyObject, public ISrsResource, public ISrsStartable, public ISrsCoroutineHandler
+// Each session contains a SIP object and a media object, that are managed by session. This means session always
+// lives longer than SIP and media, and session will dispose SIP and media when session disposed. In another word,
+// SIP and media objects use directly pointer to session, while session use shared ptr.
+class SrsGbSession : public ISrsResource, public ISrsCoroutineHandler, public ISrsExecutorHandler
 {
 private:
-    SrsCoroutine* trd_;
     SrsContextId cid_;
+private:
+    // The shared resource which own this object, we should never free it because it's managed by shared ptr.
+    SrsSharedResource<SrsGbSession>* wrapper_;
+    // The owner coroutine, allow user to interrupt the loop.
+    ISrsInterruptable* owner_coroutine_;
+    ISrsContextIdSetter* owner_cid_;
 private:
     SrsGbSessionState state_;
-    SrsLazyObjectWrapper<SrsLazyGbSession>* wrapper_root_;
+    SrsSharedResource<SrsGbSipTcpConn> sip_;
-    SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>* sip_;
+    SrsSharedResource<SrsGbMediaTcpConn> media_;
-    SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>* media_;
     SrsGbMuxer* muxer_;
 private:
     // The candidate for SDP in configuration.
@@ -132,26 +139,27 @@ private:
     uint64_t media_recovered_;
     uint64_t media_msgs_dropped_;
     uint64_t media_reserved_;
-private:
-    friend class SrsLazyObjectWrapper<SrsLazyGbSession>;
-    SrsLazyGbSession(SrsLazyObjectWrapper<SrsLazyGbSession>* wrapper_root);
 public:
-    virtual ~SrsLazyGbSession();
+    SrsGbSession();
+    virtual ~SrsGbSession();
 public:
     // Initialize the GB session.
-    srs_error_t initialize(SrsConfDirective* conf);
+    void setup(SrsConfDirective* conf);
+    // Setup the owner, the wrapper is the shared ptr, the interruptable object is the coroutine, and the cid is the context id.
+    void setup_owner(SrsSharedResource<SrsGbSession>* wrapper, ISrsInterruptable* owner_coroutine, ISrsContextIdSetter* owner_cid);
+// Interface ISrsExecutorHandler
+public:
+    virtual void on_executor_done(ISrsInterruptable* executor);
+public:
     // When got a pack of messages.
     void on_ps_pack(SrsPackContext* ctx, SrsPsPacket* ps, const std::vector<SrsTsMessage*>& msgs);
     // When got available SIP transport.
-    void on_sip_transport(SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>* sip);
+    void on_sip_transport(SrsSharedResource<SrsGbSipTcpConn> sip);
-    SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>* sip_transport();
+    SrsSharedResource<SrsGbSipTcpConn> sip_transport();
     // When got available media transport.
-    void on_media_transport(SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>* media);
+    void on_media_transport(SrsSharedResource<SrsGbMediaTcpConn> media);
     // Get the candidate for SDP generation, the public IP address for device to connect to.
     std::string pip();
-// Interface ISrsStartable
-public:
-    virtual srs_error_t start();
 // Interface ISrsOneCycleThreadHandler
 public:
     virtual srs_error_t cycle();
@@ -186,12 +194,12 @@ public:
 };
 
 // A GB28181 TCP SIP connection.
-class SrsLazyGbSipTcpConn : public SrsLazyObject, public ISrsResource, public ISrsStartable, public ISrsCoroutineHandler
+class SrsGbSipTcpConn : public ISrsResource, public ISrsCoroutineHandler, public ISrsExecutorHandler
 {
 private:
     SrsGbSipState state_;
-    SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>* wrapper_root_;
+    // The owner session object, note that we use the raw pointer and should never free it.
-    SrsLazyObjectWrapper<SrsLazyGbSession>* session_;
+    SrsGbSession* session_;
     SrsSipMessage* register_;
     SrsSipMessage* invite_ok_;
 private:
@@ -202,18 +210,28 @@ private:
     SrsTcpListener* sip_listener_;
     SrsTcpListener* media_listener_;
 private:
-    SrsTcpConnection* conn_;
+    // The shared resource which own this object, we should never free it because it's managed by shared ptr.
-    SrsLazyGbSipTcpReceiver* receiver_;
+    SrsSharedResource<SrsGbSipTcpConn>* wrapper_;
-    SrsLazyGbSipTcpSender* sender_;
+    // The owner coroutine, allow user to interrupt the loop.
-    SrsCoroutine* trd_;
+    ISrsInterruptable* owner_coroutine_;
+    ISrsContextIdSetter* owner_cid_;
+    SrsContextId cid_;
 private:
-    friend class SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>;
+    SrsTcpConnection* conn_;
-    SrsLazyGbSipTcpConn(SrsLazyObjectWrapper<SrsLazyGbSipTcpConn>* wrapper_root);
+    SrsGbSipTcpReceiver* receiver_;
+    SrsGbSipTcpSender* sender_;
 public:
-    virtual ~SrsLazyGbSipTcpConn();
+    SrsGbSipTcpConn();
+    virtual ~SrsGbSipTcpConn();
 public:
     // Setup object, to keep empty constructor.
     void setup(SrsConfDirective* conf, SrsTcpListener* sip, SrsTcpListener* media, srs_netfd_t stfd);
+    // Setup the owner, the wrapper is the shared ptr, the interruptable object is the coroutine, and the cid is the context id.
+    void setup_owner(SrsSharedResource<SrsGbSipTcpConn>* wrapper, ISrsInterruptable* owner_coroutine, ISrsContextIdSetter* owner_cid);
+// Interface ISrsExecutorHandler
+public:
+    virtual void on_executor_done(ISrsInterruptable* executor);
+public:
     // Get the SIP device id.
     std::string device_id();
     // Set the cid of all coroutines.
@@ -253,29 +271,26 @@ private:
 public:
     virtual const SrsContextId& get_id();
     virtual std::string desc();
-// Interface ISrsStartable
-public:
-    virtual srs_error_t start();
 // Interface ISrsOneCycleThreadHandler
 public:
     virtual srs_error_t cycle();
 private:
-    virtual srs_error_t do_cycle();
+    srs_error_t do_cycle();
 private:
     // Create session if no one, or bind to an existed session.
-    srs_error_t bind_session(SrsSipMessage* msg, SrsLazyObjectWrapper<SrsLazyGbSession>** psession);
+    srs_error_t bind_session(SrsSipMessage* msg, SrsGbSession** psession);
 };
 
 // Start a coroutine to receive SIP messages.
-class SrsLazyGbSipTcpReceiver : public ISrsStartable, public ISrsCoroutineHandler
+class SrsGbSipTcpReceiver : public ISrsStartable, public ISrsCoroutineHandler
 {
 private:
     SrsCoroutine* trd_;
     SrsTcpConnection* conn_;
-    SrsLazyGbSipTcpConn* sip_;
+    SrsGbSipTcpConn* sip_;
 public:
-    SrsLazyGbSipTcpReceiver(SrsLazyGbSipTcpConn* sip, SrsTcpConnection* conn);
+    SrsGbSipTcpReceiver(SrsGbSipTcpConn* sip, SrsTcpConnection* conn);
-    virtual ~SrsLazyGbSipTcpReceiver();
+    virtual ~SrsGbSipTcpReceiver();
 public:
     // Interrupt the receiver coroutine.
     void interrupt();
@@ -292,7 +307,7 @@ private:
 };
 
 // Start a coroutine to send out SIP messages.
-class SrsLazyGbSipTcpSender : public ISrsStartable, public ISrsCoroutineHandler
+class SrsGbSipTcpSender : public ISrsStartable, public ISrsCoroutineHandler
 {
 private:
     SrsCoroutine* trd_;
@@ -301,8 +316,8 @@ private:
     std::vector<SrsSipMessage*> msgs_;
     srs_cond_t wait_;
 public:
-    SrsLazyGbSipTcpSender(SrsTcpConnection* conn);
+    SrsGbSipTcpSender(SrsTcpConnection* conn);
-    virtual ~SrsLazyGbSipTcpSender();
+    virtual ~SrsGbSipTcpSender();
 public:
     // Push message to queue, and sender will send out in dedicate coroutine.
     void enqueue(SrsSipMessage* msg);
@@ -333,27 +348,36 @@ public:
 };
 
 // A GB28181 TCP media connection, for PS stream.
-class SrsLazyGbMediaTcpConn : public SrsLazyObject, public ISrsResource, public ISrsStartable, public ISrsCoroutineHandler
+class SrsGbMediaTcpConn : public ISrsResource, public ISrsCoroutineHandler, public ISrsPsPackHandler, public ISrsExecutorHandler
-    , public ISrsPsPackHandler
 {
 private:
     bool connected_;
-    SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>* wrapper_root_;
+    // The owner session object, note that we use the raw pointer and should never free it.
-    SrsLazyObjectWrapper<SrsLazyGbSession>* session_;
+    SrsGbSession* session_;
     uint32_t nn_rtcp_;
+private:
+    // The shared resource which own this object, we should never free it because it's managed by shared ptr.
+    SrsSharedResource<SrsGbMediaTcpConn>* wrapper_;
+    // The owner coroutine, allow user to interrupt the loop.
+    ISrsInterruptable* owner_coroutine_;
+    ISrsContextIdSetter* owner_cid_;
+    SrsContextId cid_;
 private:
     SrsPackContext* pack_;
     SrsTcpConnection* conn_;
-    SrsCoroutine* trd_;
     uint8_t* buffer_;
-private:
-    friend class SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>;
-    SrsLazyGbMediaTcpConn(SrsLazyObjectWrapper<SrsLazyGbMediaTcpConn>* wrapper_root);
 public:
-    virtual ~SrsLazyGbMediaTcpConn();
+    SrsGbMediaTcpConn();
+    virtual ~SrsGbMediaTcpConn();
 public:
     // Setup object, to keep empty constructor.
     void setup(srs_netfd_t stfd);
+    // Setup the owner, the wrapper is the shared ptr, the interruptable object is the coroutine, and the cid is the context id.
+    void setup_owner(SrsSharedResource<SrsGbMediaTcpConn>* wrapper, ISrsInterruptable* owner_coroutine, ISrsContextIdSetter* owner_cid);
+// Interface ISrsExecutorHandler
+public:
+    virtual void on_executor_done(ISrsInterruptable* executor);
+public:
     // Whether media is connected.
     bool is_connected();
     // Interrupt transport by session.
@@ -364,9 +388,6 @@ public:
 public:
     virtual const SrsContextId& get_id();
     virtual std::string desc();
-// Interface ISrsStartable
-public:
-    virtual srs_error_t start();
 // Interface ISrsOneCycleThreadHandler
 public:
     virtual srs_error_t cycle();
@@ -377,7 +398,7 @@ public:
     virtual srs_error_t on_ps_pack(SrsPsPacket* ps, const std::vector<SrsTsMessage*>& msgs);
 private:
     // Create session if no one, or bind to an existed session.
-    srs_error_t bind_session(uint32_t ssrc, SrsLazyObjectWrapper<SrsLazyGbSession>** psession);
+    srs_error_t bind_session(uint32_t ssrc, SrsGbSession** psession);
 };
 
 // The queue for mpegts over udp to send packets.
@@ -402,7 +423,8 @@ public:
 class SrsGbMuxer
 {
 private:
-    SrsLazyGbSession* session_;
+    // The owner session object, note that we use the raw pointer and should never free it.
+    SrsGbSession* session_;
     std::string output_;
     SrsSimpleRtmpClient* sdk_;
 private:
@@ -428,10 +450,10 @@ private:
     SrsMpegpsQueue* queue_;
     SrsPithyPrint* pprint_;
 public:
-    SrsGbMuxer(SrsLazyGbSession* session);
+    SrsGbMuxer(SrsGbSession* session);
     virtual ~SrsGbMuxer();
 public:
-    srs_error_t initialize(std::string output);
+    void setup(std::string output);
     srs_error_t on_ts_message(SrsTsMessage* msg);
 private:
     virtual srs_error_t on_ts_video(SrsTsMessage* msg, SrsBuffer* avs);

trunk/src/app/srs_app_server.cpp

@@ -1369,11 +1369,6 @@ srs_error_t SrsServerAdapter::run(SrsWaitGroup* wg)
     }
 #endif
 
-    SrsLazySweepGc* gc = dynamic_cast<SrsLazySweepGc*>(_srs_gc);
-    if ((err = gc->start()) != srs_success) {
-        return srs_error_wrap(err, "start gc");
-    }
-
     return err;
 }
 

trunk/src/app/srs_app_st.cpp

@@ -30,6 +30,30 @@ ISrsStartable::~ISrsStartable()
 {
 }
 
+ISrsInterruptable::ISrsInterruptable()
+{
+}
+
+ISrsInterruptable::~ISrsInterruptable()
+{
+}
+
+ISrsContextIdSetter::ISrsContextIdSetter()
+{
+}
+
+ISrsContextIdSetter::~ISrsContextIdSetter()
+{
+}
+
+ISrsContextIdGetter::ISrsContextIdGetter()
+{
+}
+
+ISrsContextIdGetter::~ISrsContextIdGetter()
+{
+}
+
 SrsCoroutine::SrsCoroutine()
 {
 }
@@ -342,3 +366,69 @@ void SrsWaitGroup::wait()
     }
 }
 
+ISrsExecutorHandler::ISrsExecutorHandler()
+{
+}
+
+ISrsExecutorHandler::~ISrsExecutorHandler()
+{
+}
+
+SrsExecutorCoroutine::SrsExecutorCoroutine(ISrsResourceManager* m, ISrsResource* r, ISrsCoroutineHandler* h, ISrsExecutorHandler* cb)
+{
+    resource_ = r;
+    handler_ = h;
+    manager_ = m;
+    callback_ = cb;
+    trd_ = new SrsSTCoroutine("ar", this, resource_->get_id());
+}
+
+SrsExecutorCoroutine::~SrsExecutorCoroutine()
+{
+    manager_->remove(resource_);
+    srs_freep(trd_);
+}
+
+srs_error_t SrsExecutorCoroutine::start()
+{
+    return trd_->start();
+}
+
+void SrsExecutorCoroutine::interrupt()
+{
+    trd_->interrupt();
+}
+
+srs_error_t SrsExecutorCoroutine::pull()
+{
+    return trd_->pull();
+}
+
+const SrsContextId& SrsExecutorCoroutine::cid()
+{
+    return trd_->cid();
+}
+
+void SrsExecutorCoroutine::set_cid(const SrsContextId& cid)
+{
+    trd_->set_cid(cid);
+}
+
+srs_error_t SrsExecutorCoroutine::cycle()
+{
+    srs_error_t err = handler_->cycle();
+    if (callback_) callback_->on_executor_done(this);
+    manager_->remove(this);
+    return err;
+}
+
+const SrsContextId& SrsExecutorCoroutine::get_id()
+{
+    return resource_->get_id();
+}
+
+std::string SrsExecutorCoroutine::desc()
+{
+    return resource_->desc();
+}
+

trunk/src/app/srs_app_st.hpp

@@ -15,8 +15,10 @@
 #include <srs_kernel_error.hpp>
 #include <srs_protocol_st.hpp>
 #include <srs_protocol_io.hpp>
+#include <srs_protocol_conn.hpp>
 
 class SrsFastCoroutine;
+class SrsExecutorCoroutine;
 
 // Each ST-coroutine must implements this interface,
 // to do the cycle job and handle some events.
@@ -64,21 +66,46 @@ public:
     virtual srs_error_t start() = 0;
 };
 
-// The corotine object.
+// Allow user to interrupt the coroutine, for example, to stop it.
-class SrsCoroutine : public ISrsStartable
+class ISrsInterruptable
+{
+public:
+    ISrsInterruptable();
+    virtual ~ISrsInterruptable();
+public:
+    virtual void interrupt() = 0;
+    virtual srs_error_t pull() = 0;
+};
+
+// Get the context id.
+class ISrsContextIdSetter
+{
+public:
+    ISrsContextIdSetter();
+    virtual ~ISrsContextIdSetter();
+public:
+    virtual void set_cid(const SrsContextId& cid) = 0;
+};
+
+// Set the context id.
+class ISrsContextIdGetter
+{
+public:
+    ISrsContextIdGetter();
+    virtual ~ISrsContextIdGetter();
+public:
+    virtual const SrsContextId& cid() = 0;
+};
+
+// The coroutine object.
+class SrsCoroutine : public ISrsStartable, public ISrsInterruptable
+    , public ISrsContextIdSetter, public ISrsContextIdGetter
 {
 public:
     SrsCoroutine();
     virtual ~SrsCoroutine();
 public:
     virtual void stop() = 0;
-    virtual void interrupt() = 0;
-    // @return a copy of error, which should be freed by user.
-    //      NULL if not terminated and user should pull again.
-    virtual srs_error_t pull() = 0;
-    // Get and set the context id of coroutine.
-    virtual const SrsContextId& cid() = 0;
-    virtual void set_cid(const SrsContextId& cid) = 0;
 };
 
 // An empty coroutine, user can default to this object before create any real coroutine.
@@ -192,7 +219,7 @@ private:
     static void* pfn(void* arg);
 };
 
-// Like goroytine sync.WaitGroup.
+// Like goroutine sync.WaitGroup.
 class SrsWaitGroup
 {
 private:
@@ -206,9 +233,72 @@ public:
     void add(int n);
     // When coroutine is done.
     void done();
-    // Wait for all corotine to be done.
+    // Wait for all coroutine to be done.
     void wait();
 };
 
+// The callback when executor cycle done.
+class ISrsExecutorHandler
+{
+public:
+    ISrsExecutorHandler();
+    virtual ~ISrsExecutorHandler();
+public:
+    virtual void on_executor_done(ISrsInterruptable* executor) = 0;
+};
+
+// Start a coroutine for resource executor, to execute the handler and delete resource and itself when
+// handler cycle done.
+//
+// Note that the executor will free itself by manager, then free the resource by manager. This is a helper
+// that is used for a goroutine to execute a handler and free itself after the cycle is done.
+//
+// Generally, the handler, resource, and callback generally are the same object. But we do not define a single
+// interface, because shared resource is a special interface.
+//
+// Note that the resource may live longer than executor, because it is shared resource, so you should process
+// the callback. For example, you should never use the executor after it's stopped and deleted.
+//
+// Usage:
+//      ISrsResourceManager* manager = ...;
+//      ISrsResource* resource, ISrsCoroutineHandler* handler, ISrsExecutorHandler* callback = ...; // Resource, handler, and callback are the same object.
+//      SrsExecutorCoroutine* executor = new SrsExecutorCoroutine(manager, resource, handler);
+//      if ((err = executor->start()) != srs_success) {
+//          srs_freep(executor);
+//          return err;
+//      }
+class SrsExecutorCoroutine : public ISrsResource, public ISrsStartable, public ISrsInterruptable
+    , public ISrsContextIdSetter, public ISrsContextIdGetter, public ISrsCoroutineHandler
+{
+private:
+    ISrsResourceManager* manager_;
+    ISrsResource* resource_;
+    ISrsCoroutineHandler* handler_;
+    ISrsExecutorHandler* callback_;
+private:
+    SrsCoroutine* trd_;
+public:
+    SrsExecutorCoroutine(ISrsResourceManager* m, ISrsResource* r, ISrsCoroutineHandler* h, ISrsExecutorHandler* cb);
+    virtual ~SrsExecutorCoroutine();
+// Interface ISrsStartable
+public:
+    virtual srs_error_t start();
+// Interface ISrsInterruptable
+public:
+    virtual void interrupt();
+    virtual srs_error_t pull();
+// Interface ISrsContextId
+public:
+    virtual const SrsContextId& cid();
+    virtual void set_cid(const SrsContextId& cid);
+// Interface ISrsOneCycleThreadHandler
+public:
+    virtual srs_error_t cycle();
+// Interface ISrsResource
+public:
+    virtual const SrsContextId& get_id();
+    virtual std::string desc();
+};
+
 #endif
 

trunk/src/app/srs_app_threads.cpp

@@ -335,7 +335,6 @@ srs_error_t srs_global_initialize()
 #ifdef SRS_GB28181
     _srs_gb_manager = new SrsResourceManager("GB", true);
 #endif
-    _srs_gc = new SrsLazySweepGc();
 
     // Initialize global pps, which depends on _srs_clock
     _srs_pps_ids = new SrsPps();

trunk/src/core/srs_core_autofree.hpp

@@ -81,4 +81,103 @@ public:
     }
 };
 
+// Shared ptr smart pointer, see https://github.com/ossrs/srs/discussions/3667#discussioncomment-8969107
+// Usage:
+//      SrsSharedPtr<MyClass> ptr(new MyClass());
+//      ptr->do_something();
+//
+//      SrsSharedPtr<MyClass> cp = ptr;
+//      cp->do_something();
+template<class T>
+class SrsSharedPtr
+{
+private:
+    // The pointer to the object.
+    T* ptr_;
+    // The reference count of the object.
+    uint32_t* ref_count_;
+public:
+    // Create a shared ptr with the object.
+    SrsSharedPtr(T* ptr) {
+        ptr_ = ptr;
+        ref_count_ = new uint32_t(1);
+    }
+    // Copy the shared ptr.
+    SrsSharedPtr(const SrsSharedPtr<T>& cp) {
+        copy(cp);
+    }
+    // Dispose and delete the shared ptr.
+    virtual ~SrsSharedPtr() {
+        reset();
+    }
+private:
+    // Reset the shared ptr.
+    void reset() {
+        if (!ref_count_) return;
+
+        (*ref_count_)--;
+        if (*ref_count_ == 0) {
+            delete ptr_;
+            delete ref_count_;
+        }
+
+        ptr_ = NULL;
+        ref_count_ = NULL;
+    }
+    // Copy from other shared ptr.
+    void copy(const SrsSharedPtr<T>& cp) {
+        ptr_ = cp.ptr_;
+        ref_count_ = cp.ref_count_;
+        if (ref_count_) (*ref_count_)++;
+    }
+    // Move from other shared ptr.
+    void move(SrsSharedPtr<T>& cp) {
+        ptr_ = cp.ptr_;
+        ref_count_ = cp.ref_count_;
+        cp.ptr_ = NULL;
+        cp.ref_count_ = NULL;
+    }
+public:
+    // Get the object.
+    T* get() {
+        return ptr_;
+    }
+    // Overload the -> operator.
+    T* operator->() {
+        return ptr_;
+    }
+    // The assign operator.
+    SrsSharedPtr<T>& operator=(const SrsSharedPtr<T>& cp) {
+        if (this != &cp) {
+            reset();
+            copy(cp);
+        }
+        return *this;
+    }
+private:
+    // Overload the * operator.
+    T& operator*() {
+        return *ptr_;
+    }
+    // Overload the bool operator.
+    operator bool() const {
+        return ptr_ != NULL;
+    }
+#if __cplusplus >= 201103L // C++11
+public:
+    // The move constructor.
+    SrsSharedPtr(SrsSharedPtr<T>&& cp) {
+        move(cp);
+    };
+    // The move assign operator.
+    SrsSharedPtr<T>& operator=(SrsSharedPtr<T>&& cp) {
+        if (this != &cp) {
+            reset();
+            move(cp);
+        }
+        return *this;
+    };
+#endif
+};
+
 #endif

trunk/src/core/srs_core_version6.hpp

@@ -9,6 +9,6 @@
 
 #define VERSION_MAJOR       6
 #define VERSION_MINOR       0
-#define VERSION_REVISION    125
+#define VERSION_REVISION    126
 
 #endif

trunk/src/protocol/srs_protocol_conn.cpp

@@ -40,35 +40,3 @@ ISrsConnection::~ISrsConnection()
 {
 }
 
-SrsLazyObject::SrsLazyObject()
-{
-    gc_ref_ = 0;
-}
-
-SrsLazyObject::~SrsLazyObject()
-{
-}
-
-void SrsLazyObject::gc_use()
-{
-    gc_ref_++;
-}
-
-void SrsLazyObject::gc_dispose()
-{
-    gc_ref_--;
-}
-
-int32_t SrsLazyObject::gc_ref()
-{
-    return gc_ref_;
-}
-
-ISrsLazyGc::ISrsLazyGc()
-{
-}
-
-ISrsLazyGc::~ISrsLazyGc()
-{
-}
-

trunk/src/protocol/srs_protocol_conn.hpp

@@ -33,7 +33,9 @@ public:
     ISrsResourceManager();
     virtual ~ISrsResourceManager();
 public:
-    // Remove then free the specified connection.
+    // Remove then free the specified connection. Note that the manager always free c resource,
+    // in the same coroutine or another coroutine. Some manager may support add c to a map, it
+    // should always free it even if it's in the map.
     virtual void remove(ISrsResource* c) = 0;
 };
 
@@ -48,36 +50,5 @@ public:
     virtual std::string remote_ip() = 0;
 };
 
-// Lazy-sweep resource, never sweep util all wrappers are freed.
-// See https://github.com/ossrs/srs/issues/3176#lazy-sweep
-class SrsLazyObject
-{
-private:
-    // The reference count of resource, 0 is no wrapper and safe to sweep.
-    int32_t gc_ref_;
-public:
-    SrsLazyObject();
-    virtual ~SrsLazyObject();
-public:
-    // For wrapper to use this resource.
-    virtual void gc_use();
-    // For wrapper to dispose this resource.
-    virtual void gc_dispose();
-    // The current reference count of resource.
-    virtual int32_t gc_ref();
-};
-
-// The lazy-sweep GC, wait for a long time to dispose resource even when resource is disposable.
-// See https://github.com/ossrs/srs/issues/3176#lazy-sweep
-class ISrsLazyGc
-{
-public:
-    ISrsLazyGc();
-    virtual ~ISrsLazyGc();
-public:
-    // Remove then free the specified resource.
-    virtual void remove(SrsLazyObject* c) = 0;
-};
-
 #endif
 

trunk/src/utest/srs_utest_core.cpp

@@ -8,6 +8,8 @@
 using namespace std;
 
 #include <srs_core_autofree.hpp>
+#include <srs_protocol_conn.hpp>
+#include <srs_app_conn.hpp>
 
 VOID TEST(CoreAutoFreeTest, Free)
 {
@@ -86,3 +88,343 @@ VOID TEST(CoreLogger, CheckVsnprintf)
     }
 }
 
+VOID TEST(CoreLogger, SharedPtrTypical)
+{
+    if (true) {
+        SrsSharedPtr<int> p(new int(100));
+        EXPECT_TRUE(p);
+        EXPECT_EQ(100, *p);
+    }
+
+    if (true) {
+        SrsSharedPtr<int> p(new int(100));
+        SrsSharedPtr<int> q = p;
+        EXPECT_EQ(p.get(), q.get());
+    }
+
+    if (true) {
+        SrsSharedPtr<int> p(new int(100));
+        SrsSharedPtr<int> q(p);
+        EXPECT_EQ(p.get(), q.get());
+    }
+
+    if (true) {
+        SrsSharedPtr<int> p(new int(100));
+        SrsSharedPtr<int> q = p;
+        EXPECT_TRUE(p);
+        EXPECT_TRUE(q);
+        EXPECT_EQ(100, *p);
+        EXPECT_EQ(100, *q);
+    }
+}
+
+VOID TEST(CoreLogger, SharedPtrReset)
+{
+    if (true) {
+        SrsSharedPtr<int> p(new int(100));
+        SrsSharedPtr<int> q = p;
+        p.reset();
+        EXPECT_FALSE(p);
+        EXPECT_TRUE(q);
+        EXPECT_EQ(100, *q);
+    }
+
+    if (true) {
+        SrsSharedPtr<int> p(new int(100));
+        SrsSharedPtr<int> q = p;
+        q.reset();
+        EXPECT_TRUE(p);
+        EXPECT_FALSE(q);
+        EXPECT_EQ(100, *p);
+    }
+}
+
+VOID TEST(CoreLogger, SharedPtrObject)
+{
+    SrsSharedPtr<MyNormalObject> p(new MyNormalObject(100));
+    EXPECT_TRUE(p);
+    EXPECT_EQ(100, p->id());
+}
+
+VOID TEST(CoreLogger, SharedPtrNullptr)
+{
+    SrsSharedPtr<int> p(NULL);
+    EXPECT_FALSE(p);
+
+    p.reset();
+    EXPECT_FALSE(p);
+
+    SrsSharedPtr<int> q = p;
+    EXPECT_FALSE(q);
+}
+
+class MockWrapper
+{
+public:
+    int* ptr;
+public:
+    MockWrapper(int* p) {
+        ptr = p;
+        *ptr = *ptr + 1;
+    }
+    ~MockWrapper() {
+        *ptr = *ptr - 1;
+    }
+};
+
+VOID TEST(CoreLogger, SharedPtrWrapper)
+{
+    int* ptr = new int(100);
+    SrsAutoFree(int, ptr);
+    EXPECT_EQ(100, *ptr);
+
+    if (true) {
+        SrsSharedPtr<MockWrapper> p(new MockWrapper(ptr));
+        EXPECT_EQ(101, *ptr);
+        EXPECT_EQ(101, *p->ptr);
+
+        SrsSharedPtr<MockWrapper> q = p;
+        EXPECT_EQ(101, *ptr);
+        EXPECT_EQ(101, *p->ptr);
+        EXPECT_EQ(101, *q->ptr);
+
+        SrsSharedPtr<MockWrapper> r(new MockWrapper(ptr));
+        EXPECT_EQ(102, *ptr);
+        EXPECT_EQ(102, *p->ptr);
+        EXPECT_EQ(102, *q->ptr);
+        EXPECT_EQ(102, *r->ptr);
+
+        SrsSharedPtr<MockWrapper> s(new MockWrapper(ptr));
+        EXPECT_EQ(103, *ptr);
+        EXPECT_EQ(103, *p->ptr);
+        EXPECT_EQ(103, *q->ptr);
+        EXPECT_EQ(103, *r->ptr);
+        EXPECT_EQ(103, *s->ptr);
+    }
+    EXPECT_EQ(100, *ptr);
+
+    if (true) {
+        SrsSharedPtr<MockWrapper> p(new MockWrapper(ptr));
+        EXPECT_EQ(101, *ptr);
+        EXPECT_EQ(101, *p->ptr);
+    }
+    EXPECT_EQ(100, *ptr);
+}
+
+VOID TEST(CoreLogger, SharedPtrAssign)
+{
+    if (true) {
+        SrsSharedPtr<int> p(new int(100));
+        SrsSharedPtr<int> q(NULL);
+        q = p;
+        EXPECT_EQ(p.get(), q.get());
+    }
+
+    if (true) {
+        SrsSharedPtr<int> p(new int(100));
+        SrsSharedPtr<int> q(new int(101));
+
+        int* q0 = q.get();
+        q = p;
+        EXPECT_EQ(p.get(), q.get());
+        EXPECT_NE(q0, q.get());
+    }
+
+    int* ptr0 = new int(100);
+    SrsAutoFree(int, ptr0);
+    EXPECT_EQ(100, *ptr0);
+
+    int* ptr1 = new int(200);
+    SrsAutoFree(int, ptr1);
+    EXPECT_EQ(200, *ptr1);
+
+    if (true) {
+        SrsSharedPtr<MockWrapper> p(new MockWrapper(ptr0));
+        EXPECT_EQ(101, *ptr0);
+        EXPECT_EQ(101, *p->ptr);
+
+        SrsSharedPtr<MockWrapper> q(new MockWrapper(ptr1));
+        EXPECT_EQ(201, *ptr1);
+        EXPECT_EQ(201, *q->ptr);
+
+        q = p;
+        EXPECT_EQ(200, *ptr1);
+        EXPECT_EQ(101, *ptr0);
+        EXPECT_EQ(101, *p->ptr);
+        EXPECT_EQ(101, *q->ptr);
+    }
+
+    EXPECT_EQ(100, *ptr0);
+    EXPECT_EQ(200, *ptr1);
+}
+
+template<typename T>
+SrsSharedPtr<T> mock_shared_ptr_move_assign(SrsSharedPtr<T> p) {
+    SrsSharedPtr<T> q = p;
+    return q;
+}
+
+template<typename T>
+SrsSharedPtr<T> mock_shared_ptr_move_ctr(SrsSharedPtr<T> p) {
+    return p;
+}
+
+VOID TEST(CoreLogger, SharedPtrMove)
+{
+    if (true) {
+        SrsSharedPtr<int> p(new int(100));
+        SrsSharedPtr<int> q(new int(101));
+        q = mock_shared_ptr_move_ctr(p);
+        EXPECT_EQ(q.get(), p.get());
+    }
+
+    if (true) {
+        SrsSharedPtr<int> p(new int(100));
+        SrsSharedPtr<int> q(new int(101));
+        q = mock_shared_ptr_move_assign(p);
+        EXPECT_EQ(q.get(), p.get());
+    }
+
+    int* ptr = new int(100);
+    SrsAutoFree(int, ptr);
+    EXPECT_EQ(100, *ptr);
+
+    if (true) {
+        SrsSharedPtr<MockWrapper> p(new MockWrapper(ptr));
+        EXPECT_EQ(101, *ptr);
+        EXPECT_EQ(101, *p->ptr);
+
+        SrsSharedPtr<MockWrapper> q(new MockWrapper(ptr));
+        q = mock_shared_ptr_move_ctr(p);
+        EXPECT_EQ(101, *ptr);
+        EXPECT_EQ(101, *q->ptr);
+    }
+    EXPECT_EQ(100, *ptr);
+
+    if (true) {
+        SrsSharedPtr<MockWrapper> p(new MockWrapper(ptr));
+        EXPECT_EQ(101, *ptr);
+        EXPECT_EQ(101, *p->ptr);
+
+        SrsSharedPtr<MockWrapper> q(new MockWrapper(ptr));
+        q = mock_shared_ptr_move_assign(p);
+        EXPECT_EQ(101, *ptr);
+        EXPECT_EQ(101, *q->ptr);
+    }
+    EXPECT_EQ(100, *ptr);
+
+    // Note that this will not trigger the move constructor or move assignment operator.
+    if (true) {
+        SrsSharedPtr<int> p(new int(100));
+        SrsSharedPtr<int> q = mock_shared_ptr_move_assign(p);
+        EXPECT_EQ(q.get(), p.get());
+    }
+
+    // Note that this will not trigger the move constructor or move assignment operator.
+    if (true) {
+        SrsSharedPtr<int> p = SrsSharedPtr<int>(new int(100));
+        EXPECT_TRUE(p);
+        EXPECT_EQ(100, *p);
+    }
+}
+
+class MockIntResource : public ISrsResource
+{
+public:
+    SrsContextId id_;
+    int value_;
+public:
+    MockIntResource(int value) : value_(value) {
+    }
+    virtual ~MockIntResource() {
+    }
+public:
+    virtual const SrsContextId& get_id() {
+        return id_;
+    }
+    virtual std::string desc() {
+        return id_.c_str();
+    }
+};
+
+VOID TEST(CoreLogger, SharedResourceTypical)
+{
+    if (true) {
+        SrsSharedResource<MockIntResource>* p = new SrsSharedResource<MockIntResource>(new MockIntResource(100));
+        EXPECT_TRUE(*p);
+        EXPECT_EQ(100, (*p)->value_);
+        srs_freep(p);
+    }
+
+    if (true) {
+        SrsSharedResource<MockIntResource> p(new MockIntResource(100));
+        EXPECT_TRUE(p);
+        EXPECT_EQ(100, p->value_);
+    }
+
+    if (true) {
+        SrsSharedResource<MockIntResource> p = SrsSharedResource<MockIntResource>(new MockIntResource(100));
+        EXPECT_TRUE(p);
+        EXPECT_EQ(100, p->value_);
+    }
+
+    if (true) {
+        SrsSharedResource<MockIntResource> p(new MockIntResource(100));
+        SrsSharedResource<MockIntResource> q = p;
+        EXPECT_EQ(p.get(), q.get());
+    }
+
+    if (true) {
+        SrsSharedResource<MockIntResource> p(new MockIntResource(100));
+        SrsSharedResource<MockIntResource> q(NULL);
+        q = p;
+        EXPECT_EQ(p.get(), q.get());
+    }
+
+    if (true) {
+        SrsSharedResource<MockIntResource> p(new MockIntResource(100));
+        SrsSharedResource<MockIntResource> q(new MockIntResource(200));
+        q = p;
+        EXPECT_EQ(p.get(), q.get());
+    }
+
+    if (true) {
+        SrsSharedResource<MockIntResource> p(new MockIntResource(100));
+        SrsSharedResource<MockIntResource> q = p;
+        EXPECT_TRUE(p);
+        EXPECT_TRUE(q);
+        EXPECT_EQ(100, p->value_);
+        EXPECT_EQ(100, q->value_);
+    }
+}
+
+template<typename T>
+SrsSharedResource<T> mock_shared_resource_move_assign(SrsSharedResource<T> p) {
+    SrsSharedResource<T> q = p;
+    return q;
+}
+
+template<typename T>
+SrsSharedResource<T> mock_shared_resource_move_ctr(SrsSharedResource<T> p) {
+    return p;
+}
+
+VOID TEST(CoreLogger, SharedResourceMove)
+{
+    if (true) {
+        SrsSharedResource<MockIntResource> p(new MockIntResource(100));
+        SrsSharedResource<MockIntResource> q(new MockIntResource(101));
+        q = mock_shared_resource_move_ctr(p);
+        EXPECT_EQ(100, q->value_);
+        EXPECT_EQ(q.get(), p.get());
+    }
+
+    if (true) {
+        SrsSharedResource<MockIntResource> p(new MockIntResource(100));
+        SrsSharedResource<MockIntResource> q(new MockIntResource(101));
+        q = mock_shared_resource_move_assign(p);
+        EXPECT_EQ(100, q->value_);
+        EXPECT_EQ(q.get(), p.get());
+    }
+}
+

trunk/src/utest/srs_utest_core.hpp

@@ -14,5 +14,18 @@
 
 #include <string>
 
+class MyNormalObject
+{
+private:
+    int id_;
+public:
+    MyNormalObject(int id) {
+        id_ = id;
+    }
+    int id() {
+        return id_;
+    }
+};
+
 #endif