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() : num_(++expended_states_)
20 const unsigned long maxpid = Api::get().get_maxpid();
21 actor_states_.resize(maxpid);
22 transition_.reset(new Transition());
23 /* Stateful model checking */
24 if ((_sg_mc_checkpoint > 0 && (num_ % _sg_mc_checkpoint == 0)) || _sg_mc_termination) {
25 auto snapshot_ptr = Api::get().take_snapshot(num_);
26 system_state_ = std::shared_ptr<simgrid::mc::Snapshot>(snapshot_ptr);
30 std::size_t State::count_todo() const
32 return boost::range::count_if(this->actor_states_, [](simgrid::mc::ActorState const& a) { return a.is_todo(); });
35 Transition* State::get_transition() const
37 return transition_.get();
40 int State::next_transition() const
42 std::vector<ActorInformation>& actors = mc_model_checker->get_remote_process().actors();
43 XBT_DEBUG("Search for an actor to run. %zu actors to consider", actors.size());
44 for (unsigned int i = 0; i < actors.size(); i++) {
45 /* Only consider actors (1) marked as interleaving by the checker and (2) currently enabled in the application*/
46 if (aid_t aid = actors[i].copy.get_buffer()->get_pid();
47 not actor_states_[aid].is_todo() || not Api::get().get_session().actor_is_enabled(aid))
54 void State::execute_next(int next)
56 std::vector<ActorInformation>& actors = mc_model_checker->get_remote_process().actors();
58 const kernel::actor::ActorImpl* actor = actors[next].copy.get_buffer();
59 aid_t aid = actor->get_pid();
62 simgrid::mc::ActorState* actor_state = &actor_states_[aid];
63 /* This actor is ready to be executed. Prepare its execution when simcall_handle will be called on it */
64 times_considered = actor_state->get_times_considered_and_inc();
65 if (actor->simcall_.mc_max_consider_ <= actor_state->get_times_considered())
66 actor_state->set_done();
68 XBT_DEBUG("Let's run actor %ld (times_considered = %d)", aid, times_considered);
70 Transition::executed_transitions_++;
72 transition_.reset(mc_model_checker->handle_simcall(aid, times_considered, true));
73 mc_model_checker->wait_for_requests();
75 } // namespace simgrid::mc