1 /* Copyright (c) 2013-2020. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #ifndef SURF_ROUTING_DIJKSTRA_HPP_
7 #define SURF_ROUTING_DIJKSTRA_HPP_
9 #include <simgrid/kernel/routing/RoutedZone.hpp>
16 /** @ingroup ROUTING_API
17 * @brief NetZone with an explicit routing computed on need with Dijkstra
19 * The path between components is computed each time you request it,
20 * using the Dijkstra algorithm. A cache can be used to reduce the computation.
22 * This result in rather small platform file, very fast initialization, and very low memory requirements, but somehow
23 * long path resolution times.
25 class XBT_PRIVATE DijkstraZone : public RoutedZone {
27 static void route_graph_delete(xbt_graph_t);
29 std::unique_ptr<s_xbt_graph_t, decltype(&DijkstraZone::route_graph_delete)> route_graph_{
30 xbt_graph_new_graph(1, nullptr), &DijkstraZone::route_graph_delete};
31 std::map<int, xbt_node_t> graph_node_map_;
33 std::map<int, std::vector<int>> route_cache_;
35 xbt_node_t route_graph_new_node(int id);
36 xbt_node_t node_map_search(int id);
37 void new_edge(int src_id, int dst_id, RouteCreationArgs* e_route);
40 DijkstraZone(NetZoneImpl* father, const std::string& name, resource::NetworkModel* netmodel, bool cached);
42 /* For each vertex (node) already in the graph,
43 * make sure it also has a loopback link; this loopback
44 * can potentially already be in the graph, and in that
45 * case nothing will be done.
47 * If no loopback is specified for a node, we will use
48 * the loopback that is provided by the routing platform.
50 * After this function returns, any node in the graph
51 * will have a loopback attached to it.
54 void get_local_route(NetPoint* src, NetPoint* dst, RouteCreationArgs* route, double* lat) override;
55 void add_route(NetPoint* src, NetPoint* dst, NetPoint* gw_src, NetPoint* gw_dst,
56 std::vector<resource::LinkImpl*>& link_list, bool symmetrical) override;
58 } // namespace routing
60 } // namespace simgrid
62 #endif /* SURF_ROUTING_DIJKSTRA_HPP_ */