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 #include "src/mc/api/State.hpp"
7 #include "src/mc/mc_config.hpp"
9 #include <boost/range/algorithm.hpp>
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_state, mc, "Logging specific to MC states");
13 namespace simgrid::mc {
15 long State::expended_states_ = 0;
17 State::State(const RemoteApp& remote_app) : num_(++expended_states_)
19 remote_app.get_actors_status(actors_to_run_);
21 transition_.reset(new Transition());
22 /* Stateful model checking */
23 if ((_sg_mc_checkpoint > 0 && (num_ % _sg_mc_checkpoint == 0)) || _sg_mc_termination) {
24 system_state_ = std::make_shared<simgrid::mc::Snapshot>(num_);
28 State::State(const RemoteApp& remote_app, const State* previous_state) : num_(++expended_states_)
31 remote_app.get_actors_status(actors_to_run_);
33 transition_.reset(new Transition());
34 /* Stateful model checking */
35 if ((_sg_mc_checkpoint > 0 && (num_ % _sg_mc_checkpoint == 0)) || _sg_mc_termination) {
36 system_state_ = std::make_shared<simgrid::mc::Snapshot>(num_);
39 /* For each actor in the previous sleep set, keep it if it is not dependent with current transition.
40 * And if we kept it and the actor is enabled in this state, mark the actor as already done, so that
41 * it is not explored*/
42 for (auto & [aid, transition] : previous_state->get_sleep_set()) {
44 if (not previous_state->get_transition()->depends(&transition)) {
46 sleep_set_.emplace(aid, transition);
47 if (actors_to_run_.count(aid) != 0) {
48 XBT_DEBUG("Actor %ld will not be explored, for it is in the sleep set", aid);
50 actors_to_run_.at(aid).mark_done();
54 XBT_DEBUG("Transition >>%s<< removed from the sleep set because it was dependent with >>%s<<", transition.to_string().c_str(), previous_state->get_transition()->to_string().c_str());
60 std::size_t State::count_todo() const
62 return boost::range::count_if(this->actors_to_run_, [](auto& pair) { return pair.second.is_todo(); });
65 void State::mark_all_todo()
67 for (auto & [aid, actor] : actors_to_run_) {
69 if (actor.is_enabled() and not actor.is_done() and not actor.is_todo())
75 Transition* State::get_transition() const
77 return transition_.get();
80 aid_t State::next_transition() const
82 XBT_DEBUG("Search for an actor to run. %zu actors to consider", actors_to_run_.size());
83 for (auto const& [aid, actor] : actors_to_run_) {
84 /* Only consider actors (1) marked as interleaving by the checker and (2) currently enabled in the application */
85 if (not actor.is_todo() || not actor.is_enabled() || actor.is_done()) {
87 if (not actor.is_todo())
88 XBT_DEBUG("Can't run actor %ld because it is not todo", aid);
90 if (not actor.is_enabled())
91 XBT_DEBUG("Can't run actor %ld because it is not enabled", aid);
94 XBT_DEBUG("Can't run actor %ld because it has already been done", aid);
106 void State::execute_next(aid_t next)
108 /* This actor is ready to be executed. Prepare its execution when simcall_handle will be called on it */
109 const unsigned times_considered = actors_to_run_.at(next).do_consider();
111 XBT_DEBUG("Let's run actor %ld (times_considered = %u)", next, times_considered);
113 Transition::executed_transitions_++;
115 transition_.reset(mc_model_checker->handle_simcall(next, times_considered, true));
116 mc_model_checker->wait_for_requests();
118 } // namespace simgrid::mc