1 /* Copyright (c) 2013-2017. 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 "src/kernel/routing/RoutedZone.hpp"
11 struct s_graph_node_data_t {
13 int graph_id; /* used for caching internal graph id's */
15 typedef s_graph_node_data_t* graph_node_data_t;
17 struct s_route_cache_element_t {
21 typedef s_route_cache_element_t* route_cache_element_t;
31 /** @ingroup ROUTING_API
32 * @brief NetZone with an explicit routing computed on need with Dijsktra
34 * The path between components is computed each time you request it,
35 * using the Dijkstra algorithm. A cache can be used to reduce the computation.
37 * This result in rather small platform file, very fast initialization, and very low memory requirements, but somehow long path resolution times.
39 class XBT_PRIVATE DijkstraZone : public RoutedZone {
41 DijkstraZone(NetZone* father, std::string name, bool cached);
44 ~DijkstraZone() override;
45 xbt_node_t routeGraphNewNode(int id, int graph_id);
46 xbt_node_t nodeMapSearch(int id);
47 void newRoute(int src_id, int dst_id, sg_platf_route_cbarg_t e_route);
48 /* For each vertex (node) already in the graph,
49 * make sure it also has a loopback link; this loopback
50 * can potentially already be in the graph, and in that
51 * case nothing will be done.
53 * If no loopback is specified for a node, we will use
54 * the loopback that is provided by the routing platform.
56 * After this function returns, any node in the graph
57 * will have a loopback attached to it.
59 void getLocalRoute(NetPoint* src, NetPoint* dst, sg_platf_route_cbarg_t route, double* lat) override;
60 void addRoute(sg_platf_route_cbarg_t route) override;
62 xbt_graph_t routeGraph_ = nullptr; /* xbt_graph */
63 std::map<int, xbt_node_t> graphNodeMap_; /* map */
64 std::map<int, route_cache_element_t> routeCache_; /* use in cache mode */
70 #endif /* SURF_ROUTING_DIJKSTRA_HPP_ */