X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/fe6a4a0cfb04cbe8c0bbd93c7bf6c29ec017ddec..7e625e5e848a284b522d69ec28cb111f1f88515b:/src/mc/explo/DFSExplorer.hpp

diff --git a/src/mc/explo/DFSExplorer.hpp b/src/mc/explo/DFSExplorer.hpp
index 0eaac540a5..bb80b08f98 100644
--- a/src/mc/explo/DFSExplorer.hpp
+++ b/src/mc/explo/DFSExplorer.hpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008-2022. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2008-2023. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
@@ -6,76 +6,118 @@
 #ifndef SIMGRID_MC_SAFETY_CHECKER_HPP
 #define SIMGRID_MC_SAFETY_CHECKER_HPP
 
-#include "src/mc/VisitedState.hpp"
+#include "src/mc/api/ClockVector.hpp"
+#include "src/mc/api/State.hpp"
 #include "src/mc/explo/Exploration.hpp"
-#include "src/mc/mc_safety.hpp"
+#include "src/mc/explo/odpor/Execution.hpp"
+#include "src/mc/mc_config.hpp"
 
+#include <deque>
 #include <list>
 #include <memory>
+#include <set>
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 namespace simgrid::mc {
 
+using stack_t = std::deque<std::shared_ptr<State>>;
+
 class XBT_PRIVATE DFSExplorer : public Exploration {
-  ReductionMode reductionMode_ = ReductionMode::unset;
-  long backtrack_count_        = 0;
+private:
+  ReductionMode reduction_mode_;
+  unsigned long backtrack_count_      = 0; // for statistics
+  unsigned long visited_states_count_ = 0; // for statistics
 
-  static xbt::signal<void()> on_exploration_start_signal;
-  static xbt::signal<void()> on_backtracking_signal;
+  static xbt::signal<void(RemoteApp&)> on_exploration_start_signal;
+  static xbt::signal<void(RemoteApp&)> on_backtracking_signal;
 
-  static xbt::signal<void(State*)> on_state_creation_signal;
+  static xbt::signal<void(State*, RemoteApp&)> on_state_creation_signal;
 
-  static xbt::signal<void(State*)> on_restore_system_state_signal;
-  static xbt::signal<void()> on_restore_initial_state_signal;
-  static xbt::signal<void(Transition*)> on_transition_replay_signal;
-  static xbt::signal<void(Transition*)> on_transition_execute_signal;
+  static xbt::signal<void(State*, RemoteApp&)> on_restore_system_state_signal;
+  static xbt::signal<void(RemoteApp&)> on_restore_initial_state_signal;
+  static xbt::signal<void(Transition*, RemoteApp&)> on_transition_replay_signal;
+  static xbt::signal<void(Transition*, RemoteApp&)> on_transition_execute_signal;
 
-  static xbt::signal<void()> on_log_state_signal;
+  static xbt::signal<void(RemoteApp&)> on_log_state_signal;
 
 public:
-  explicit DFSExplorer(RemoteApp& remote_app);
+  explicit DFSExplorer(const std::vector<char*>& args, ReductionMode mode);
   void run() override;
   RecordTrace get_record_trace() override;
-  std::vector<std::string> get_textual_trace() override;
   void log_state() override;
 
   /** Called once when the exploration starts */
-  static void on_exploration_start(std::function<void()> const& f) { on_exploration_start_signal.connect(f); }
+  static void on_exploration_start(std::function<void(RemoteApp& remote_app)> const& f)
+  {
+    on_exploration_start_signal.connect(f);
+  }
   /** Called each time that the exploration backtracks from a exploration end */
-  static void on_backtracking(std::function<void()> const& f) { on_backtracking_signal.connect(f); }
+  static void on_backtracking(std::function<void(RemoteApp& remote_app)> const& f)
+  {
+    on_backtracking_signal.connect(f);
+  }
   /** Called each time that a new state is create */
-  static void on_state_creation(std::function<void(State*)> const& f) { on_state_creation_signal.connect(f); }
+  static void on_state_creation(std::function<void(State*, RemoteApp& remote_app)> const& f)
+  {
+    on_state_creation_signal.connect(f);
+  }
   /** Called when rollbacking directly onto a previously checkpointed state */
-  static void on_restore_system_state(std::function<void(State*)> const& f)
+  static void on_restore_system_state(std::function<void(State*, RemoteApp& remote_app)> const& f)
   {
     on_restore_system_state_signal.connect(f);
   }
   /** Called when the state to which we backtrack was not checkpointed state, forcing us to restore the initial state
    * before replaying some transitions */
-  static void on_restore_initial_state(std::function<void()> const& f) { on_restore_initial_state_signal.connect(f); }
+  static void on_restore_initial_state(std::function<void(RemoteApp& remote_app)> const& f)
+  {
+    on_restore_initial_state_signal.connect(f);
+  }
   /** Called when replaying a transition that was previously executed, to reach a backtracked state */
-  static void on_transition_replay(std::function<void(Transition*)> const& f)
+  static void on_transition_replay(std::function<void(Transition*, RemoteApp& remote_app)> const& f)
   {
     on_transition_replay_signal.connect(f);
   }
   /** Called when executing a new transition */
-  static void on_transition_execute(std::function<void(Transition*)> const& f)
+  static void on_transition_execute(std::function<void(Transition*, RemoteApp& remote_app)> const& f)
   {
     on_transition_execute_signal.connect(f);
   }
   /** Called when displaying the statistics at the end of the exploration */
-  static void on_log_state(std::function<void()> const& f) { on_log_state_signal.connect(f); }
+  static void on_log_state(std::function<void(RemoteApp&)> const& f) { on_log_state_signal.connect(f); }
 
 private:
-  void check_non_termination(const State* current_state);
   void backtrack();
-  void restore_state();
 
   /** Stack representing the position in the exploration graph */
-  std::list<std::unique_ptr<State>> stack_;
-  VisitedStates visited_states_;
-  std::unique_ptr<VisitedState> visited_state_;
+  stack_t stack_;
+
+  /**
+   * Provides additional metadata about the position in the exploration graph
+   * which is used by SDPOR and ODPOR
+   */
+  odpor::Execution execution_seq_;
+
+  /** Per-actor clock vectors used to compute the "happens-before" relation */
+  std::unordered_map<aid_t, ClockVector> per_actor_clocks_;
+
+  /** Opened states are states that still contains todo actors.
+   *  When backtracking, we pick a state from it*/
+  std::vector<std::shared_ptr<State>> opened_states_;
+  std::shared_ptr<State> best_opened_state();
+
+  /** If we're running ODPOR, picks the corresponding state in the stack
+   * (opened_states_ are ignored)
+   */
+  std::shared_ptr<State> next_odpor_state();
+
+  /** Change current stack_ value to correspond to the one we would have
+   *  had if we executed transition to get to state. This is required when
+   *  backtracking, and achieved thanks to the fact states save their parent.*/
+  void restore_stack(std::shared_ptr<State> state);
+
+  RecordTrace get_record_trace_of_stack(stack_t stack);
 };
 
 } // namespace simgrid::mc