1 /* Copyright (c) 2007-2022. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #ifndef SIMGRID_MC_LIVENESS_CHECKER_HPP
8 #define SIMGRID_MC_LIVENESS_CHECKER_HPP
10 #include "src/mc/api/State.hpp"
11 #include "src/mc/checker/Checker.hpp"
12 #include "xbt/automaton.hpp"
21 class XBT_PRIVATE Pair {
24 bool search_cycle = false;
25 std::shared_ptr<State> graph_state = nullptr; /* System state included */
26 xbt_automaton_state_t automaton_state = nullptr;
27 std::shared_ptr<const std::vector<int>> atomic_propositions;
30 bool exploration_started = false;
32 explicit Pair(unsigned long expanded_pairs);
34 Pair(Pair const&) = delete;
35 Pair& operator=(Pair const&) = delete;
38 class XBT_PRIVATE VisitedPair {
41 int other_num = 0; /* Dot output for */
42 std::shared_ptr<State> graph_state = nullptr; /* System state included */
43 xbt_automaton_state_t automaton_state;
44 std::shared_ptr<const std::vector<int>> atomic_propositions;
45 std::size_t heap_bytes_used = 0;
48 VisitedPair(int pair_num, xbt_automaton_state_t automaton_state,
49 std::shared_ptr<const std::vector<int>> atomic_propositions, std::shared_ptr<State> graph_state);
52 class XBT_PRIVATE LivenessChecker : public Checker {
54 explicit LivenessChecker(Session* session);
56 RecordTrace get_record_trace() override;
57 std::vector<std::string> get_textual_trace() override;
58 void log_state() override;
61 std::shared_ptr<const std::vector<int>> get_proposition_values() const;
62 std::shared_ptr<VisitedPair> insert_acceptance_pair(Pair* pair);
63 int insert_visited_pair(std::shared_ptr<VisitedPair> visited_pair, Pair* pair);
64 void show_acceptance_cycle(std::size_t depth);
66 void remove_acceptance_pair(int pair_num);
67 void purge_visited_pairs();
69 std::shared_ptr<Pair> create_pair(const Pair* pair, xbt_automaton_state_t state,
70 std::shared_ptr<const std::vector<int>> propositions);
72 // A stack of (application_state, automaton_state) pairs for DFS exploration:
73 std::list<std::shared_ptr<Pair>> exploration_stack_;
74 std::list<std::shared_ptr<VisitedPair>> acceptance_pairs_;
75 std::list<std::shared_ptr<VisitedPair>> visited_pairs_;
76 unsigned long visited_pairs_count_ = 0;
77 unsigned long expanded_pairs_count_ = 0;
78 int previous_pair_ = 0;
79 std::string previous_request_;
83 } // namespace simgrid