1 /* Copyright (c) 2008-2022. 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 #include "src/mc/api/State.hpp"
7 #include "src/mc/api.hpp"
8 #include "src/mc/mc_config.hpp"
10 #include <boost/range/algorithm.hpp>
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_state, mc, "Logging specific to MC states");
14 namespace simgrid::mc {
16 long State::expended_states_ = 0;
18 State::State(Session& session) : num_(++expended_states_)
20 auto actors = mc_model_checker->get_remote_process().actors();
22 for (unsigned int i = 0; i < actors.size(); i++) {
23 auto remote_actor = actors[i].copy.get_buffer();
24 aid_t aid = remote_actor->get_pid();
26 actors_to_run_.insert(
27 std::make_pair(aid, ActorState(aid, session.actor_is_enabled(aid), remote_actor->simcall_.mc_max_consider_)));
30 transition_.reset(new Transition());
31 /* Stateful model checking */
32 if ((_sg_mc_checkpoint > 0 && (num_ % _sg_mc_checkpoint == 0)) || _sg_mc_termination) {
33 auto snapshot_ptr = Api::get().take_snapshot(num_);
34 system_state_ = std::shared_ptr<simgrid::mc::Snapshot>(snapshot_ptr);
38 std::size_t State::count_todo() const
40 return boost::range::count_if(this->actors_to_run_, [](auto& pair) { return pair.second.is_todo(); });
43 Transition* State::get_transition() const
45 return transition_.get();
48 aid_t State::next_transition() const
50 XBT_DEBUG("Search for an actor to run. %zu actors to consider", actors_to_run_.size());
51 for (auto const& [aid, actor] : actors_to_run_) {
52 /* Only consider actors (1) marked as interleaving by the checker and (2) currently enabled in the application */
53 if (not actor.is_todo() || not actor.is_enabled())
60 void State::execute_next(aid_t next)
62 /* This actor is ready to be executed. Prepare its execution when simcall_handle will be called on it */
63 const unsigned times_considered = actors_to_run_.at(next).do_consider();
65 XBT_DEBUG("Let's run actor %ld (times_considered = %u)", next, times_considered);
67 Transition::executed_transitions_++;
69 transition_.reset(mc_model_checker->handle_simcall(next, times_considered, true));
70 mc_model_checker->wait_for_requests();
72 } // namespace simgrid::mc