Split-Duplex: new management

[simgrid.git] / include / simgrid / s4u / Link.hpp

diff --git a/include/simgrid/s4u/Link.hpp b/include/simgrid/s4u/Link.hpp
index b000853..1ab58c8 100644 (file)
--- a/include/simgrid/s4u/Link.hpp
+++ b/include/simgrid/s4u/Link.hpp
@@ -34,16 +34,17 @@ class XBT_PUBLIC Link : public xbt::Extendable<Link> {
   friend kernel::resource::LinkImpl;
 #endif
 
+protected:
   // Links are created from the NetZone, and destroyed by their private implementation when the simulation ends
-  explicit Link(kernel::resource::LinkImpl* pimpl) : pimpl_(pimpl) {}
+  explicit Link(kernel::resource::LinkImplIntf* pimpl) : pimpl_(pimpl) {}
   virtual ~Link() = default;
-  // The private implementation, that never changes
-  kernel::resource::LinkImpl* const pimpl_;
+  // The implementation that never changes
+  kernel::resource::LinkImplIntf* const pimpl_;
 
 public:
   enum class SharingPolicy { WIFI = 3, SPLITDUPLEX = 2, SHARED = 1, FATPIPE = 0 };
 
-  kernel::resource::LinkImpl* get_impl() const { return pimpl_; }
+  kernel::resource::LinkImpl* get_impl() const;
 
   /** @brief Retrieve a link from its name */
   static Link* by_name(const std::string& name);
@@ -149,6 +150,54 @@ public:
   static xbt::signal<void(kernel::resource::NetworkAction&, kernel::resource::Action::State)>
       on_communication_state_change;
 };
+
+/**
+ * @beginrst
+ * A SplitDuplexLink encapsulates the :cpp:class:`links <simgrid::s4u::Link>` which
+ * compose a Split-Duplex link. Remember that a Split-Duplex link is nothing more than
+ * a pair of up/down links.
+ * @endrst
+ */
+class XBT_PUBLIC SplitDuplexLink : public Link {
+public:
+  explicit SplitDuplexLink(kernel::resource::LinkImplIntf* pimpl) : Link(pimpl) {}
+  /** @brief Get the link direction up*/
+  Link* get_link_up() const;
+  /** @brief Get the link direction down */
+  Link* get_link_down() const;
+
+  /** @brief Retrieve a link from its name */
+  static SplitDuplexLink* by_name(const std::string& name);
+};
+
+/**
+ * @beginrst
+ * Another encapsulation for using links in the :cpp:function:: NetZone::add_route
+ *
+ * When adding a route with split-duplex links, you need to specify the direction of the link
+ * so SimGrid can know exactly which physical link to insert in the route.
+ *
+ * For shared/fat-pipe links, use the Direction::NONE since they don't have
+ * the concept of UP/DOWN links.
+ * @endrst
+ */
+class XBT_PUBLIC LinkInRoute {
+public:
+  enum class Direction { UP = 2, DOWN = 1, NONE = 0 };
+
+  LinkInRoute(const Link* link) : link_(link) {}
+  LinkInRoute(const Link* link, Direction d) : link_(link), direction_(d) {}
+
+  /** @brief Get direction of this link in the route: UP or DOWN */
+  Direction get_direction() const { return direction_; }
+  /** @brief Get pointer to the link */
+  const Link* get_link() const { return link_; }
+
+private:
+  const Link* link_;
+  Direction direction_ = Direction::NONE;
+};
+
 } // namespace s4u
 } // namespace simgrid