C++ shared_from_this函数代码示例

void my::GateServer::handle_accept(ConnectionPtr conn, boost::system::error_code err)
{
	if (err)
	{
		LogE << err.message() << LogEnd;
		conn->getSocket().close();
		ConnectionPtr nextConn = boost::shared_ptr<TcpConnection>(new TcpConnection(core.getService(), m_GateHandler, shared_from_this()));
		m_pAcceptor->async_accept(nextConn->getSocket(), boost::bind(&GateServer::handle_accept, this, nextConn, boost::asio::placeholders::error));
	}
	else
	{
		//new incomming player!!!
		LogD << conn->getSocket().remote_endpoint().address() << " " << conn->getSocket().remote_endpoint().port() << LogEnd;

		boost::recursive_mutex::scoped_lock lock(mtx);
		conn->setNetId(m_nNetIdHolder);
		ip::tcp::no_delay option(true);
		conn->getSocket().set_option(option);
		m_ConnMap.insert(std::make_pair<int, ConnectionPtr>(m_nNetIdHolder, conn));		
		conn->start();
		m_nNetIdHolder = (m_nNetIdHolder + 1) % MAX_NET_ID;
		m_nConnCount++;
			
		ConnectionPtr nextConn = boost::shared_ptr<TcpConnection>(new TcpConnection(core.getService(), m_GateHandler, shared_from_this()));
		m_pAcceptor->async_accept(nextConn->getSocket(), boost::bind(&GateServer::handle_accept, this, nextConn, boost::asio::placeholders::error));
	}
}

CrowdDetectorFilterImpl::CrowdDetectorFilterImpl (
  const std::vector<std::shared_ptr<RegionOfInterest>> &rois,
  std::shared_ptr< MediaObjectImpl > parent) :
  FilterImpl (parent)
{
  GstBus *bus;
  std::shared_ptr<MediaPipelineImpl> pipe;
  GstStructure *roisStructure;

  pipe = std::dynamic_pointer_cast<MediaPipelineImpl> (getMediaPipeline() );

  g_object_set (element, "filter-factory", "crowddetector", NULL);

  bus = gst_pipeline_get_bus (GST_PIPELINE (pipe->getPipeline() ) );

  g_object_get (G_OBJECT (element), "filter", &crowdDetector, NULL);

  if (crowdDetector == NULL) {
    g_object_unref (bus);
    throw KurentoException (MEDIA_OBJECT_NOT_AVAILABLE,
                            "Media Object not available");
  }

  roisStructure = gst_structure_new_empty  ("Rois");

  for (auto roi : rois) {
    GstStructure *roiStructureAux = get_structure_from_roi (roi);

    gst_structure_set (roisStructure,
                       roi->getId().c_str(), GST_TYPE_STRUCTURE,
                       roiStructureAux,
                       NULL);

    gst_structure_free (roiStructureAux);
  }

  g_object_set (G_OBJECT (crowdDetector), ROIS_PARAM, roisStructure, NULL);
  gst_structure_free (roisStructure);

  busMessageLambda = [&] (GstMessage * message) {
    const GstStructure *st;
    gchar *roiID;
    const gchar *type;
    std::string roiIDStr, typeStr;

    if (GST_MESSAGE_SRC (message) != GST_OBJECT (crowdDetector) ||
        GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT) {
      return;
    }

    st = gst_message_get_structure (message);
    type = gst_structure_get_name (st);

    if (!gst_structure_get (st, "roi", G_TYPE_STRING , &roiID, NULL) ) {
      GST_WARNING ("The message does not contain the roi ID");
      return;
    }

    roiIDStr = roiID;
    typeStr = type;

    g_free (roiID);

    if (typeStr == "fluidity-event") {

      double fluidity_percentage;
      int fluidity_level;

      if (! (gst_structure_get (st, "fluidity_percentage", G_TYPE_DOUBLE,
                                &fluidity_percentage, NULL) ) ) {
        GST_WARNING ("The message does not contain the fluidity percentage");
        return;
      }

      if (! (gst_structure_get (st, "fluidity_level", G_TYPE_INT,
                                &fluidity_level, NULL) ) ) {
        GST_WARNING ("The message does not contain the fluidity level");
        return;
      }

      try {
        CrowdDetectorFluidity event (fluidity_percentage, fluidity_level, roiIDStr,
                                     shared_from_this(),
                                     CrowdDetectorFluidity::getName() );
        signalCrowdDetectorFluidity (event);
      } catch (std::bad_weak_ptr &e) {
      }
    } else if (typeStr == "occupancy-event") {

      double occupancy_percentage;
      int occupancy_level;

      if (! (gst_structure_get (st, "occupancy_percentage", G_TYPE_DOUBLE,
                                &occupancy_percentage, NULL) ) ) {
        GST_WARNING ("The message does not contain the occupancy percentage");
        return;
      }

      if (! (gst_structure_get (st, "occupancy_level", G_TYPE_INT,
                                &occupancy_level, NULL) ) ) {
//.........这里部分代码省略.........

void Node::forwardProperty(int ourProperty, std::shared_ptr<Node> toNode, int toProperty) {
	forwarded_properties[ourProperty] = std::make_tuple(toNode, toProperty);
	toNode->addPropertyBackref(toProperty, std::static_pointer_cast<Node>(shared_from_this()), ourProperty);
	simulation->invalidatePlan();
}

std::shared_ptr<base::IBlock> BlockFS::block() const {
    return std::const_pointer_cast<BlockFS>(shared_from_this());
}

neb::fnd::app::Base * const		THIS::get_fnd_app()
{
	auto a = std::dynamic_pointer_cast<neb::fnd::app::Base>(shared_from_this());

	return a.get();
}

//.........这里部分代码省略.........
            std::vector<OSG::FieldContainerType*> core_types;
            const unsigned int num_types = model_elt->getNum(core_type_tkn);
            for ( unsigned int t = 0; t < num_types; ++t )
            {
               const std::string type_name = 
                  model_elt->getProperty<std::string>(core_type_tkn, i);
               OSG::FieldContainerType* fct =
                  OSG::FieldContainerFactory::the()->findType(
                     type_name.c_str()
                  );

               if ( NULL != fct )
               {
                  core_types.push_back(fct);
               }
               else
               {
                  VRKIT_STATUS << "Skipping unknown type '" << type_name
                               << "'" << std::endl;
               }
            }

            DynamicSceneObjectPtr scene_obj;

            if ( ! core_types.empty() )
            {
               util::CoreTypePredicate pred(core_types);
               scene_obj = DynamicSceneObject::create()->init(model_node,
                                                              pred, true);
            }
            else
            {
               scene_obj =
                  DynamicSceneObjectTransform::create()->init(model_node);
            }

            // scene_obj's root will be added as a child of
            // scene_xform_root.
            child_root = scene_obj->getRoot();
            scene_obj->moveTo(xform_mat_osg);
            viewer->addObject(scene_obj);
         }
         // If this model is not supposed to be grabbable, we examine the
         // core of the root node.
         else
         {
            OSG::NodeCorePtr root_core = model_node->getCore();
            OSG::TransformPtr xform_core =
#if OSG_MAJOR_VERSION < 2
               OSG::TransformPtr::dcast(root_core);
#else
               OSG::cast_dynamic<OSG::TransformPtr>(root_core);
#endif

            // If model_node's core is of type OSG::Transform, then we set
            // set the matrix on that core to be xform_mat_osg.
            if ( OSG::NullFC != xform_core )
            {
#if OSG_MAJOR_VERSION < 2
               OSG::CPEditor xce(xform_core, OSG::Transform::MatrixFieldMask);
#endif
               xform_core->setMatrix(xform_mat_osg);

               // model_node will be added as a child of scene_xform_root.
               child_root = model_node;
            }
            // If model_node's core is not of type OSG::Transform, then we
            // need to make a new node with an OSG::Transform core and make
            // it the parent of model_node.
            else
            {
               OSG::TransformNodePtr xform_node(OSG::Transform::create());

#if OSG_MAJOR_VERSION < 2
               OSG::CPEditor xnce(xform_node.core(),
                                  OSG::Transform::MatrixFieldMask);
#endif
               xform_node->setMatrix(xform_mat_osg);

#if OSG_MAJOR_VERSION < 2
               OSG::CPEditor xne(xform_node.node(),
                                 OSG::Node::ChildrenFieldMask);
#endif
               xform_node.node()->addChild(model_node);

               // xform_node will be added as a child of scene_xform_root.
               child_root = xform_node.node();
            }
         }

         vprASSERT(child_root != OSG::NullFC);

         // The OSG::{begin,end}EditCP() calls for scene_xform_root wrap
         // the for loop that we are in.
         scene_xform_root.node()->addChild(child_root);
      }
   }

   return shared_from_this();
}

bool Subscription::negotiateConnection(const std::string& xmlrpc_uri)
{


  XmlRpcValue tcpros_array, protos_array, params;
  XmlRpcValue udpros_array;
  ros::TransportUDPPtr udp_transport;
  int protos = 0;
  ros::V_string transports = transport_hints_.getTransports();
  if (transports.empty())
  {
    transport_hints_.reliable();
    transports = transport_hints_.getTransports();
  }
  for (ros::V_string::const_iterator it = transports.begin();
       it != transports.end();
       ++it)
  {
    if (*it == "UDP")
    {
      int max_datagram_size = transport_hints_.getMaxDatagramSize();
      udp_transport = ros::TransportUDPPtr(new ros::TransportUDP(&ros::PollManager::instance()->getPollSet()));
      if (!max_datagram_size)
        max_datagram_size = udp_transport->getMaxDatagramSize();
      udp_transport->createIncoming(0, false);
      udpros_array[0] = "UDPROS";
      M_string m;
      m["topic"] = getName();
      m["md5sum"] = md5sum();
      m["callerid"] = ros::this_node::getName();
      m["type"] = datatype();
      boost::shared_array<uint8_t> buffer;
      uint32_t len;
      ros::Header::write(m, buffer, len);
      XmlRpcValue v(buffer.get(), len);
      udpros_array[1] = v;
      udpros_array[2] = ros::network::getHost();
      udpros_array[3] = udp_transport->getServerPort();
      udpros_array[4] = max_datagram_size;

      protos_array[protos++] = udpros_array;
    }
    else if (*it == "TCP")
    {
      tcpros_array[0] = std::string("TCPROS");
      protos_array[protos++] = tcpros_array;
    }
    else
    {
      ROS_WARN("Unsupported transport type hinted: %s, skipping", it->c_str());
    }
  }
  params[0] = ros::this_node::getName();
  params[1] = name_;
  params[2] = protos_array;
  std::string peer_host;
  uint32_t peer_port;
  if (!ros::network::splitURI(xmlrpc_uri, peer_host, peer_port))
  {
    ROS_ERROR("Bad xml-rpc URI: [%s]", xmlrpc_uri.c_str());
    return false;
  }

  XmlRpcClient* c = new XmlRpcClient(peer_host.c_str(),
                                                     peer_port, "/");
 // if (!c.execute("requestTopic", params, result) || !g_node->validateXmlrpcResponse("requestTopic", result, proto))

  // Initiate the negotiation.  We'll come back and check on it later.
  if (!c->executeNonBlock("requestTopic", params))
  {
    ROSCPP_LOG_DEBUG("Failed to contact publisher [%s:%d] for topic [%s]",
              peer_host.c_str(), peer_port, name_.c_str());
    delete c;
    if (udp_transport)
    {
      udp_transport->close();
    }

    return false;
  }

  ROSCPP_LOG_DEBUG("Began asynchronous xmlrpc connection to [%s:%d]", peer_host.c_str(), peer_port);

  // The PendingConnectionPtr takes ownership of c, and will delete it on
  // destruction.
  PendingConnectionPtr conn(new PendingConnection(c, udp_transport, shared_from_this(), xmlrpc_uri));

//ROS_INFO("add connection to xmlrpcmanager");

  XMLRPCManager::instance()->addASyncConnection(conn);
  // Put this connection on the list that we'll look at later.
  {
    boost::mutex::scoped_lock pending_connections_lock(pending_connections_mutex_);
    pending_connections_.insert(conn);
  }

  return true;
}

CameraPtr Camera::init()
{
   // Create a transform to contain the location and orientation of the camera.
   mTransform = OSG::Transform::create();

   OSG::NodePtr beacon = OSG::Node::create();
#if OSG_MAJOR_VERSION < 2
   OSG::CPEditor be(beacon, OSG::Node::CoreFieldMask);
#endif
   beacon->setCore(mTransform);

   mLeftTexture = tex_chunk_t::create();
#if OSG_MAJOR_VERSION < 2
   OSG::CPEditor lte(mLeftTexture);
   mLeftTexture->setEnvMode(GL_MODULATE);
#else
   mLeftTexEnv = OSG::TextureEnvChunk::create();
   mLeftTexEnv->setEnvMode(GL_MODULATE);
#endif

   mRightTexture = tex_chunk_t::create();
#if OSG_MAJOR_VERSION < 2
   OSG::CPEditor rte(mRightTexture);
   mRightTexture->setEnvMode(GL_MODULATE);
#else
   mRightTexEnv = OSG::TextureEnvChunk::create();
   mRightTexEnv->setEnvMode(GL_MODULATE);
#endif

   mCurrentTexture = mLeftTexture;
#if OSG_MAJOR_VERSION >= 2
   mCurrentTexEnv = mLeftTexEnv;
#endif

   // setup camera
   mCamera = OSG::PerspectiveCamera::create();
#if OSG_MAJOR_VERSION < 2
   OSG::CPEditor ce(mCamera);
#endif
   mCamera->setFov(
#if OSG_MAJOR_VERSION < 2
      OSG::osgdegree2rad(60.0)
#else
      OSG::osgDegree2Rad(60.0)
#endif
   );
   mCamera->setNear(0.01);
   mCamera->setFar(10000);
   mCamera->setBeacon(beacon);

   mLeftImage = OSG::Image::create();
   mRightImage = OSG::Image::create();

   OSG::ImagePtr img;

   // Set up FBO textures.
   img = mLeftImage;
   mLeftTexture->setMinFilter(GL_LINEAR);
   mLeftTexture->setMagFilter(GL_LINEAR);
   mLeftTexture->setTarget(GL_TEXTURE_2D);
   mLeftTexture->setInternalFormat(GL_RGBA8);
   mLeftTexture->setImage(img);

   img = mRightImage;
   mRightTexture->setMinFilter(GL_LINEAR);
   mRightTexture->setMagFilter(GL_LINEAR);
   mRightTexture->setTarget(GL_TEXTURE_2D);
   mRightTexture->setInternalFormat(GL_RGBA8);
   mRightTexture->setImage(img);

   mCurrentImage = mLeftImage;

   return shared_from_this();
}

void SuggestionsSidebarBlock::QueryProvider(SuggestionsBackend& backend, const CatalogItemPtr& item, uint64_t queryId)
{
    m_pendingQueries++;

    // we need something to talk to GUI thread through that is guaranteed
    // to exist, and the app object is a good choice:
    auto backendPtr = &backend;
    std::weak_ptr<SuggestionsSidebarBlock> weakSelf = std::dynamic_pointer_cast<SuggestionsSidebarBlock>(shared_from_this());

    m_provider->SuggestTranslation
    (
        backend,
        m_parent->GetCurrentSourceLanguage(),
        m_parent->GetCurrentLanguage(),
        item->GetString().ToStdWstring(),

        // when receiving data
        [=](const SuggestionsList& hits){
            call_on_main_thread([weakSelf,queryId,hits]{
                auto self = weakSelf.lock();
                // maybe this call is already out of date:
                if (!self || self->m_latestQueryId != queryId)
                    return;
                self->UpdateSuggestions(hits);
                if (--self->m_pendingQueries == 0)
                    self->OnQueriesFinished();
            });
        },

        // on error:
        [=](std::exception_ptr e){
            call_on_main_thread([weakSelf,queryId,backendPtr,e]{
                auto self = weakSelf.lock();
                // maybe this call is already out of date:
                if (!self || self->m_latestQueryId != queryId)
                    return;
                self->ReportError(backendPtr, e);
                if (--self->m_pendingQueries == 0)
                    self->OnQueriesFinished();
            });
        }
    );
}

void PlayListFolder::AddPlayList(boost::shared_ptr<PlayListElement> playList) {
    playList->SetParent(shared_from_this());
    playlists_.push_back(playList);
}

IDatabaseSPtr RedisServer::createDatabase(IDataBaseInfoSPtr info) {
  return IDatabaseSPtr(new RedisDatabase(shared_from_this(), info));
}

StructuredScript::Interfaces::Node::Ptr StructuredScript::Nodes::EchoNode::ptr(){
	return shared_from_this();
}

void my::GateServer::init()
{
	boost::shared_ptr<TcpServer> serverPtr(this); //make sure that shared_from_this() can run perfectly ok!
	Json::Value gateConf = util::fileSystem::loadJsonFileEval(jsonconf::server_config);
	if (gateConf == Json::nullValue)
	{
		LogW << "Error init GateServer, null gateConf" << LogEnd;
		return;
	}
	//初始化httpSvr
	{
		m_HttpServerPtr = HttpServerPtr(new http::HttpServer());
		m_HttpServerPtr->init(gateConf);
		m_HttpServerPtr->run();
	}
	m_GateConf = gateConf;
	int	port = gateConf["gateSvrPort"].asInt();
	std::string gameSvrIp = gateConf["gameSvrIp"].asString();
	int gameSvrPort = gateConf["gameSvrPort"].asInt();
	std::string accountSvrIp = gateConf["accountSvrIp"].asString();
	int accountSvrPort = gateConf["accountSvrPort"].asInt();

	m_nConnCount = 0;
	m_nNetIdHolder = 0;
	m_pEndpoint = EndpointPtr(new boost::asio::ip::tcp::endpoint(ip::tcp::v4(), port));
	m_pAcceptor = AcceptorPtr(new boost::asio::ip::tcp::acceptor(core.getService(), *m_pEndpoint));

	m_GateHandler = boost::shared_ptr<GateHandler>(new GateHandler());
	ConnectionPtr nextConn = boost::shared_ptr<TcpConnection>(new TcpConnection(core.getService(), m_GateHandler, shared_from_this()));
	m_pAcceptor->async_accept(nextConn->getSocket(), boost::bind(&GateServer::handle_accept, this, nextConn, boost::asio::placeholders::error));

	connectToGameSvr(gameSvrIp, gameSvrPort);
	connectToAccountSvr(accountSvrIp, accountSvrPort);

	LogD << "Init Gate Server Ok!!!" << LogEnd;

	update();
}

void CShips::Retreat(const CPoint& ptRetreatSector, COMBAT_TACTIC::Typ const* NewCombatTactic)
{
	NotifySector temp(shared_from_this());
	CShip::Retreat(ptRetreatSector, NewCombatTactic);
}

void Player::collidedBy(std::shared_ptr<Actor> a) {
    a->collideWith(std::static_pointer_cast<Player>(shared_from_this()));
}