1 /* Copyright (c) 2013-2023. 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 SIMGRID_ROUTING_FLOYD_HPP_
7 #define SIMGRID_ROUTING_FLOYD_HPP_
9 #include <simgrid/kernel/routing/RoutedZone.hpp>
11 namespace simgrid::kernel::routing {
13 /** @ingroup ROUTING_API
14 * @brief NetZone with an explicit routing computed at initialization with Floyd-Warshal
16 * The path between components is computed at creation time from every one-hop links,
17 * using the Floyd-Warshal algorithm.
19 * This result in rather small platform file, slow initialization time, and intermediate memory requirements
20 * (somewhere between the one of @{DijkstraZone} and the one of @{FullZone}).
22 class XBT_PRIVATE FloydZone : public RoutedZone {
23 /* vars to compute the Floyd algorithm. */
24 std::vector<std::vector<long>> predecessor_table_;
25 std::vector<std::vector<unsigned long>> cost_table_;
26 std::vector<std::vector<std::unique_ptr<Route>>> link_table_;
28 void init_tables(unsigned int table_size);
29 void do_seal() override;
32 using RoutedZone::RoutedZone;
33 FloydZone(const FloydZone&) = delete;
34 FloydZone& operator=(const FloydZone&) = delete;
36 void get_local_route(const NetPoint* src, const NetPoint* dst, Route* into, double* latency) override;
37 void add_route(NetPoint* src, NetPoint* dst, NetPoint* gw_src, NetPoint* gw_dst,
38 const std::vector<s4u::LinkInRoute>& link_list, bool symmetrical) override;
40 } // namespace simgrid::kernel::routing
42 #endif /* SIMGRID_ROUTING_FLOYD_HPP_ */