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/Session.hpp"
8 #include "src/mc/api.hpp"
9 #include "src/mc/mc_config.hpp"
11 #include <boost/range/algorithm.hpp>
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_state, mc, "Logging specific to MC states");
15 using simgrid::mc::remote;
16 using api = simgrid::mc::Api;
21 long State::expended_states_ = 0;
23 State::State() : num_(++expended_states_)
25 const unsigned long maxpid = api::get().get_maxpid();
26 actor_states_.resize(maxpid);
27 transition_.reset(new Transition());
28 /* Stateful model checking */
29 if ((_sg_mc_checkpoint > 0 && (num_ % _sg_mc_checkpoint == 0)) || _sg_mc_termination) {
30 auto snapshot_ptr = api::get().take_snapshot(num_);
31 system_state_ = std::shared_ptr<simgrid::mc::Snapshot>(snapshot_ptr);
35 std::size_t State::count_todo() const
37 return boost::range::count_if(this->actor_states_, [](simgrid::mc::ActorState const& a) { return a.is_todo(); });
40 Transition* State::get_transition() const
42 return transition_.get();
45 int State::next_transition() const
47 std::vector<ActorInformation>& actors = mc_model_checker->get_remote_process().actors();
48 XBT_DEBUG("Search for an actor to run. %zu actors to consider", actors.size());
49 for (unsigned int i = 0; i < actors.size(); i++) {
50 aid_t aid = actors[i].copy.get_buffer()->get_pid();
51 const ActorState* actor_state = &actor_states_[aid];
53 /* Only consider actors (1) marked as interleaving by the checker and (2) currently enabled in the application*/
54 if (not actor_state->is_todo() || not simgrid::mc::session_singleton->actor_is_enabled(aid))
61 void State::execute_next(int next)
63 std::vector<ActorInformation>& actors = mc_model_checker->get_remote_process().actors();
65 const kernel::actor::ActorImpl* actor = actors[next].copy.get_buffer();
66 aid_t aid = actor->get_pid();
69 simgrid::mc::ActorState* actor_state = &actor_states_[aid];
70 /* This actor is ready to be executed. Prepare its execution when simcall_handle will be called on it */
71 times_considered = actor_state->get_times_considered_and_inc();
72 if (actor->simcall_.mc_max_consider_ <= actor_state->get_times_considered())
73 actor_state->set_done();
75 XBT_DEBUG("Let's run actor %ld (times_considered = %d)", aid, times_considered);
77 Transition::executed_transitions_++;
79 transition_.reset(mc_model_checker->handle_simcall(aid, times_considered, true));
80 mc_model_checker->wait_for_requests();
83 } // namespace simgrid