- virtual NetworkLinkPtr createResource(const char *name,
- double bw_initial,
- tmgr_trace_t bw_trace,
- double lat_initial,
- tmgr_trace_t lat_trace,
- e_surf_resource_state_t state_initial,
- tmgr_trace_t state_trace,
- e_surf_link_sharing_policy_t policy,
- xbt_dict_t properties)=0;
-
- //FIXME:void updateActionsStateLazy(double now, double delta);
- virtual void gapAppend(double /*size*/, const NetworkLinkLmmPtr /*link*/, NetworkActionLmmPtr /*action*/) {};
- virtual ActionPtr communicate(RoutingEdgePtr src, RoutingEdgePtr dst,
- double size, double rate)=0;
- virtual xbt_dynar_t getRoute(RoutingEdgePtr src, RoutingEdgePtr dst); //FIXME: kill field? That is done by the routing nowadays
- void (*f_networkSolve)(lmm_system_t);
- virtual double latencyFactor(double size);
- virtual double bandwidthFactor(double size);
- virtual double bandwidthConstraint(double rate, double bound, double size);
- bool m_haveGap;
-};
-
-/************
- * Resource *
- ************/
-
-class NetworkLink : virtual public Resource {
-public:
- NetworkLink() : p_latEvent(NULL) {};
- virtual double getBandwidth()=0;
- virtual double getLatency();
- virtual bool isShared()=0;
-
- /* Using this object with the public part of
- model does not make sense */
- double m_latCurrent;
- tmgr_trace_event_t p_latEvent;
-};
-
-class NetworkLinkLmm : public ResourceLmm, public NetworkLink {
-protected:
-public:
- NetworkLinkLmm() {};
- NetworkLinkLmm(lmm_constraint_t constraint, tmgr_history_t history, tmgr_trace_t state_trace);
- bool isShared();
- bool isUsed();
- double getBandwidth();
- tmgr_trace_event_t p_stateEvent;
- s_surf_metric_t p_power;
-};
-
-/**********
- * Action *
- **********/
-class NetworkAction : virtual public Action {
-public:
- NetworkAction() {};
- double m_latency;
- double m_latCurrent;
- double m_weight;
- double m_rate;
- const char* p_senderLinkName;
- double m_senderGap;
- double m_senderSize;
- xbt_fifo_item_t p_senderFifoItem;
-#ifdef HAVE_LATENCY_BOUND_TRACKING
- int m_latencyLimited;
-#endif
-
-};
-
-class NetworkActionLmm : public ActionLmm, public NetworkAction {
-public:
- NetworkActionLmm() {};
-};
+ Link* loopback_ = nullptr;
+ };
+
+ /************
+ * Resource *
+ ************/
+ /** @ingroup SURF_network_interface
+ * @brief SURF network link interface class
+ * @details A Link represents the link between two [hosts](\ref simgrid::surf::HostImpl)
+ */
+ class Link :
+ public simgrid::surf::Resource,
+ public simgrid::surf::PropertyHolder {
+ public:
+
+ /** @brief Constructor of LMM links */
+ Link(simgrid::surf::NetworkModel* model, const char* name, lmm_constraint_t constraint);
+
+ /* Link destruction logic */
+ /**************************/
+ protected:
+ ~Link() override;
+ public:
+ void destroy(); // Must be called instead of the destructor
+ private:
+ bool currentlyDestroying_ = false;
+
+ public:
+ /** @brief Callback signal fired when a new Link is created.
+ * Signature: void(Link*) */
+ static simgrid::xbt::signal<void(surf::Link*)> onCreation;
+
+ /** @brief Callback signal fired when a Link is destroyed.
+ * Signature: void(Link*) */
+ static simgrid::xbt::signal<void(surf::Link*)> onDestruction;
+
+ /** @brief Callback signal fired when the state of a Link changes (when it is turned on or off)
+ * Signature: `void(Link*)` */
+ static simgrid::xbt::signal<void(surf::Link*)> onStateChange;
+
+ /** @brief Callback signal fired when a communication starts
+ * Signature: `void(NetworkAction *action, host *src, host *dst)` */
+ static simgrid::xbt::signal<void(surf::NetworkAction*, s4u::Host* src, s4u::Host* dst)> onCommunicate;
+
+ /** @brief Get the bandwidth in bytes per second of current Link */
+ virtual double bandwidth();
+
+ /** @brief Update the bandwidth in bytes per second of current Link */
+ virtual void setBandwidth(double value) = 0;
+
+ /** @brief Get the latency in seconds of current Link */
+ virtual double latency();
+
+ /** @brief Update the latency in seconds of current Link */
+ virtual void setLatency(double value) = 0;
+
+ /** @brief The sharing policy is a @{link e_surf_link_sharing_policy_t::EType} (0: FATPIPE, 1: SHARED, 2: FULLDUPLEX) */
+ virtual int sharingPolicy();
+
+ /** @brief Check if the Link is used */
+ bool isUsed() override;
+
+ void turnOn() override;
+ void turnOff() override;
+
+ virtual void setStateTrace(tmgr_trace_t trace); /*< setup the trace file with states events (ON or OFF). Trace must contain boolean values. */
+ virtual void setBandwidthTrace(tmgr_trace_t trace); /*< setup the trace file with bandwidth events (peak speed changes due to external load). Trace must contain percentages (value between 0 and 1). */
+ virtual void setLatencyTrace(tmgr_trace_t trace); /*< setup the trace file with latency events (peak latency changes due to external load). Trace must contain absolute values */
+
+ tmgr_trace_iterator_t stateEvent_ = nullptr;
+ s_surf_metric_t latency_ = {1.0, 0, nullptr};
+ s_surf_metric_t bandwidth_ = {1.0, 0, nullptr};
+
+ /* User data */
+ public:
+ void *getData() { return userData;}
+ void setData(void *d) { userData=d;}
+ private:
+ void *userData = nullptr;
+
+ /* List of all links. FIXME: should move to the Engine */
+ private:
+ static std::unordered_map<std::string, Link *> *links;
+ public:
+ static Link *byName(const char* name);
+ static int linksCount();
+ static Link **linksList();
+ static void linksExit();
+ };
+
+ /**********
+ * Action *
+ **********/
+ /** @ingroup SURF_network_interface
+ * @brief SURF network action interface class
+ * @details A NetworkAction represents a communication between two [hosts](\ref HostImpl)
+ */
+ class NetworkAction : public simgrid::surf::Action {
+ public:
+ /** @brief Constructor
+ *
+ * @param model The NetworkModel associated to this NetworkAction
+ * @param cost The cost of this NetworkAction in [TODO]
+ * @param failed [description]
+ */
+ NetworkAction(simgrid::surf::Model *model, double cost, bool failed)
+ : simgrid::surf::Action(model, cost, failed) {}
+
+ /**
+ * @brief NetworkAction constructor
+ *
+ * @param model The NetworkModel associated to this NetworkAction
+ * @param cost The cost of this NetworkAction in [TODO]
+ * @param failed [description]
+ * @param var The lmm variable associated to this Action if it is part of a
+ * LMM component
+ */
+ NetworkAction(simgrid::surf::Model *model, double cost, bool failed, lmm_variable_t var)
+ : simgrid::surf::Action(model, cost, failed, var) {};
+
+ void setState(simgrid::surf::Action::State state) override;
+
+ double latency_;
+ double latCurrent_;
+ double weight_;
+ double rate_;
+ const char* senderLinkName_;
+ double senderSize_;
+ xbt_fifo_item_t senderFifoItem_;
+ };
+ }
+}