1 /* Copyright (c) 2013-2022. 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_FLOYD_HPP_
7 #define SURF_ROUTING_FLOYD_HPP_
9 #include <simgrid/kernel/routing/RoutedZone.hpp>
15 /** @ingroup ROUTING_API
16 * @brief NetZone with an explicit routing computed at initialization with Floyd-Warshal
18 * The path between components is computed at creation time from every one-hop links,
19 * using the Floyd-Warshal algorithm.
21 * This result in rather small platform file, slow initialization time, and intermediate memory requirements
22 * (somewhere between the one of @{DijkstraZone} and the one of @{FullZone}).
24 class XBT_PRIVATE FloydZone : public RoutedZone {
25 /* vars to compute the Floyd algorithm. */
26 std::vector<std::vector<long>> predecessor_table_;
27 std::vector<std::vector<unsigned long>> cost_table_;
28 std::vector<std::vector<std::unique_ptr<Route>>> link_table_;
30 void init_tables(unsigned int table_size);
31 void do_seal() override;
34 using RoutedZone::RoutedZone;
35 FloydZone(const FloydZone&) = delete;
36 FloydZone& operator=(const FloydZone&) = delete;
38 void get_local_route(const NetPoint* src, const NetPoint* dst, Route* into, double* latency) override;
39 void add_route(NetPoint* src, NetPoint* dst, NetPoint* gw_src, NetPoint* gw_dst,
40 const std::vector<s4u::LinkInRoute>& link_list, bool symmetrical) override;
42 } // namespace routing
44 } // namespace simgrid
46 #endif /* SURF_ROUTING_FLOYD_HPP_ */