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Add intial steps to transfer transitions to the MC
[simgrid.git] / src / mc / api / State.cpp
1 /* Copyright (c) 2008-2023. The SimGrid Team. All rights reserved.          */
2
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. */
5
6 #include "src/mc/api/State.hpp"
7 #include "src/mc/mc_config.hpp"
8
9 #include <boost/range/algorithm.hpp>
10
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_state, mc, "Logging specific to MC states");
12
13 namespace simgrid::mc {
14
15 long State::expended_states_ = 0;
16
17 State::State(const RemoteApp& remote_app) : num_(++expended_states_)
18 {
19   remote_app.get_actors_status(actors_to_run_);
20
21   /* Stateful model checking */
22   if ((_sg_mc_checkpoint > 0 && (num_ % _sg_mc_checkpoint == 0)) || _sg_mc_termination) {
23     system_state_ = std::make_shared<simgrid::mc::Snapshot>(num_);
24   }
25 }
26
27 std::size_t State::count_todo() const
28 {
29   return boost::range::count_if(this->actors_to_run_, [](auto& pair) { return pair.second.is_todo(); });
30 }
31
32 Transition* State::get_transition() const
33 {
34   return transition_;
35 }
36
37 aid_t State::next_transition() const
38 {
39   XBT_DEBUG("Search for an actor to run. %zu actors to consider", actors_to_run_.size());
40   for (auto const& [aid, actor] : actors_to_run_) {
41     /* Only consider actors (1) marked as interleaving by the checker and (2) currently enabled in the application */
42     if (not actor.is_todo() || not actor.is_enabled())
43       continue;
44
45     return aid;
46   }
47   return -1;
48 }
49 void State::execute_next(aid_t next)
50 {
51   /* This actor is ready to be executed. Prepare its execution when simcall_handle will be called on it */
52   const unsigned times_considered    = actors_to_run_.at(next).do_consider();
53   auto* expected_executed_transition = actors_to_run_.at(next).get_transition(times_considered);
54   xbt_assert(expected_executed_transition != nullptr,
55              "Expected a transition with %d times considered to be noted in actor %lu", times_considered, next);
56
57   XBT_DEBUG("Let's run actor %ld (times_considered = %u)", next, times_considered);
58
59   Transition::executed_transitions_++;
60
61   const auto* executed_transition = mc_model_checker->handle_simcall(next, times_considered, true);
62   xbt_assert(executed_transition->type_ == expected_executed_transition->type_,
63              "The transition that was just executed by actor %lu, viz:\n"
64              "%s\n"
65              "is not what was purportedly scheduled to execute, which was:\n"
66              "%s\n",
67              next, executed_transition->to_string().c_str(), expected_executed_transition->to_string().c_str());
68   transition_ = expected_executed_transition;
69   mc_model_checker->wait_for_requests();
70 }
71 } // namespace simgrid::mc