1 /* Copyright (c) 2008-2023. 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_MC_SAFETY_CHECKER_HPP
7 #define SIMGRID_MC_SAFETY_CHECKER_HPP
9 #include "src/mc/VisitedState.hpp"
10 #include "src/mc/explo/Exploration.hpp"
17 namespace simgrid::mc {
19 class XBT_PRIVATE DFSExplorer : public Exploration {
20 XBT_DECLARE_ENUM_CLASS(ReductionMode, none, dpor);
22 ReductionMode reduction_mode_;
23 unsigned long backtrack_count_ = 0; // for statistics
24 unsigned long visited_states_count_ = 0; // for statistics
26 static xbt::signal<void(RemoteApp&)> on_exploration_start_signal;
27 static xbt::signal<void(RemoteApp&)> on_backtracking_signal;
29 static xbt::signal<void(State*, RemoteApp&)> on_state_creation_signal;
31 static xbt::signal<void(State*, RemoteApp&)> on_restore_system_state_signal;
32 static xbt::signal<void(RemoteApp&)> on_restore_initial_state_signal;
33 static xbt::signal<void(Transition*, RemoteApp&)> on_transition_replay_signal;
34 static xbt::signal<void(Transition*, RemoteApp&)> on_transition_execute_signal;
36 static xbt::signal<void(RemoteApp&)> on_log_state_signal;
39 explicit DFSExplorer(const std::vector<char*>& args, bool with_dpor);
41 RecordTrace get_record_trace() override;
42 std::vector<std::string> get_textual_trace() override;
43 void log_state() override;
45 /** Called once when the exploration starts */
46 static void on_exploration_start(std::function<void(RemoteApp& remote_app)> const& f)
48 on_exploration_start_signal.connect(f);
50 /** Called each time that the exploration backtracks from a exploration end */
51 static void on_backtracking(std::function<void(RemoteApp& remote_app)> const& f)
53 on_backtracking_signal.connect(f);
55 /** Called each time that a new state is create */
56 static void on_state_creation(std::function<void(State*, RemoteApp& remote_app)> const& f)
58 on_state_creation_signal.connect(f);
60 /** Called when rollbacking directly onto a previously checkpointed state */
61 static void on_restore_system_state(std::function<void(State*, RemoteApp& remote_app)> const& f)
63 on_restore_system_state_signal.connect(f);
65 /** Called when the state to which we backtrack was not checkpointed state, forcing us to restore the initial state
66 * before replaying some transitions */
67 static void on_restore_initial_state(std::function<void(RemoteApp& remote_app)> const& f)
69 on_restore_initial_state_signal.connect(f);
71 /** Called when replaying a transition that was previously executed, to reach a backtracked state */
72 static void on_transition_replay(std::function<void(Transition*, RemoteApp& remote_app)> const& f)
74 on_transition_replay_signal.connect(f);
76 /** Called when executing a new transition */
77 static void on_transition_execute(std::function<void(Transition*, RemoteApp& remote_app)> const& f)
79 on_transition_execute_signal.connect(f);
81 /** Called when displaying the statistics at the end of the exploration */
82 static void on_log_state(std::function<void(RemoteApp&)> const& f) { on_log_state_signal.connect(f); }
85 void check_non_termination(const State* current_state);
88 /** Stack representing the position in the exploration graph */
89 std::list<std::unique_ptr<State>> stack_;
90 VisitedStates visited_states_;
91 std::unique_ptr<VisitedState> visited_state_;
94 } // namespace simgrid::mc