1 /* Copyright (c) 2013-2016. 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 typedef struct graph_node_data {
13 int graph_id; /* used for caching internal graph id's */
14 } s_graph_node_data_t, *graph_node_data_t;
16 typedef struct graph_node_map_element {
18 } s_graph_node_map_element_t, *graph_node_map_element_t;
20 typedef struct route_cache_element {
23 } s_route_cache_element_t, *route_cache_element_t;
33 /** @ingroup ROUTING_API
34 * @brief NetZone with an explicit routing computed on need with Dijsktra
36 * The path between components is computed each time you request it,
37 * using the Dijkstra algorithm. A cache can be used to reduce the computation.
39 * This result in rather small platform file, very fast initialization, and very low memory requirements, but somehow long path resolution times.
41 class XBT_PRIVATE DijkstraZone : public RoutedZone {
43 DijkstraZone(NetZone* father, const char* name, bool cached);
46 ~DijkstraZone() override;
47 xbt_node_t routeGraphNewNode(int id, int graph_id);
48 graph_node_map_element_t nodeMapSearch(int id);
49 void newRoute(int src_id, int dst_id, sg_platf_route_cbarg_t e_route);
50 /* For each vertex (node) already in the graph,
51 * make sure it also has a loopback link; this loopback
52 * can potentially already be in the graph, and in that
53 * case nothing will be done.
55 * If no loopback is specified for a node, we will use
56 * the loopback that is provided by the routing platform.
58 * After this function returns, any node in the graph
59 * will have a loopback attached to it.
61 void getLocalRoute(NetPoint* src, NetPoint* dst, sg_platf_route_cbarg_t route, double* lat) override;
62 void addRoute(sg_platf_route_cbarg_t route) override;
64 xbt_graph_t routeGraph_ = nullptr; /* xbt_graph */
65 xbt_dict_t graphNodeMap_ = nullptr; /* map */
66 xbt_dict_t routeCache_ = nullptr; /* use in cache mode */
72 #endif /* SURF_ROUTING_DIJKSTRA_HPP_ */