1 /* Copyright (c) 2013-2019. 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 Dijsktra
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 DijkstraZone(NetZoneImpl* father, const std::string& name, resource::NetworkModel* netmodel, bool cached);
28 DijkstraZone(const DijkstraZone&) = delete;
29 DijkstraZone& operator=(const DijkstraZone&) = delete;
31 ~DijkstraZone() override;
34 xbt_node_t route_graph_new_node(int id);
35 xbt_node_t node_map_search(int id);
36 void new_edge(int src_id, int dst_id, RouteCreationArgs* e_route);
39 /* For each vertex (node) already in the graph,
40 * make sure it also has a loopback link; this loopback
41 * can potentially already be in the graph, and in that
42 * case nothing will be done.
44 * If no loopback is specified for a node, we will use
45 * the loopback that is provided by the routing platform.
47 * After this function returns, any node in the graph
48 * will have a loopback attached to it.
51 void get_local_route(NetPoint* src, NetPoint* dst, RouteCreationArgs* route, double* lat) override;
52 void add_route(NetPoint* src, NetPoint* dst, NetPoint* gw_src, NetPoint* gw_dst,
53 std::vector<resource::LinkImpl*>& link_list, bool symmetrical) override;
55 xbt_graph_t route_graph_ = nullptr; /* xbt_graph */
56 std::map<int, xbt_node_t> graph_node_map_; /* map */
57 bool cached_; /* cache mode */
58 std::map<int, std::vector<int>> route_cache_; /* use in cache mode */
60 } // namespace routing
62 } // namespace simgrid
64 #endif /* SURF_ROUTING_DIJKSTRA_HPP_ */