* under the terms of the license (GNU LGPL) which comes with this package. */
#include "src/mc/api/State.hpp"
+#include "src/mc/api/strategy/BasicStrategy.hpp"
+#include "src/mc/api/strategy/WaitStrategy.hpp"
#include "src/mc/explo/Exploration.hpp"
#include "src/mc/mc_config.hpp"
+#include <algorithm>
#include <boost/range/algorithm.hpp>
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_state, mc, "Logging specific to MC states");
State::State(RemoteApp& remote_app) : num_(++expended_states_)
{
- remote_app.get_actors_status(actors_to_run_);
+ XBT_VERB("Creating a guide for the state");
+ if (_sg_mc_strategy == "none")
+ strategy_ = std::make_shared<BasicStrategy>();
+ else if (_sg_mc_strategy == "nb_wait")
+ strategy_ = std::make_shared<WaitStrategy>();
+ else
+ THROW_IMPOSSIBLE;
+ remote_app.get_actors_status(strategy_->actors_to_run_);
+
+#if SIMGRID_HAVE_STATEFUL_MC
/* Stateful model checking */
if ((_sg_mc_checkpoint > 0 && (num_ % _sg_mc_checkpoint == 0)) || _sg_mc_termination)
system_state_ = std::make_shared<simgrid::mc::Snapshot>(num_, remote_app.get_page_store(),
- remote_app.get_remote_process_memory());
+ *remote_app.get_remote_process_memory());
+#endif
}
-State::State(RemoteApp& remote_app, const State* parent_state)
- : num_(++expended_states_), parent_state_(parent_state)
+State::State(RemoteApp& remote_app, std::shared_ptr<State> parent_state)
+ : incoming_transition_(parent_state->get_transition_out()), num_(++expended_states_), parent_state_(parent_state)
{
+ if (_sg_mc_strategy == "none")
+ strategy_ = std::make_shared<BasicStrategy>();
+ else if (_sg_mc_strategy == "nb_wait")
+ strategy_ = std::make_shared<WaitStrategy>();
+ else
+ THROW_IMPOSSIBLE;
+ *strategy_ = *(parent_state->strategy_);
- remote_app.get_actors_status(actors_to_run_);
+ remote_app.get_actors_status(strategy_->actors_to_run_);
- /* Stateful model checking */
+#if SIMGRID_HAVE_STATEFUL_MC /* Stateful model checking */
if ((_sg_mc_checkpoint > 0 && (num_ % _sg_mc_checkpoint == 0)) || _sg_mc_termination)
system_state_ = std::make_shared<simgrid::mc::Snapshot>(num_, remote_app.get_page_store(),
- remote_app.get_remote_process_memory());
-
-
- /* If we want sleep set reduction, copy the sleep set and eventually removes things from it */
- if (_sg_mc_sleep_set) {
- /* For each actor in the previous sleep set, keep it if it is not dependent with current transition.
- * And if we kept it and the actor is enabled in this state, mark the actor as already done, so that
- * it is not explored*/
- for (auto& [aid, transition] : parent_state_->get_sleep_set()) {
-
- if (not parent_state_->get_transition()->depends(&transition)) {
-
- sleep_set_.emplace(aid, transition);
- if (actors_to_run_.count(aid) != 0) {
- XBT_DEBUG("Actor %ld will not be explored, for it is in the sleep set", aid);
-
- actors_to_run_.at(aid).mark_done();
- }
- } else
- XBT_DEBUG("Transition >>%s<< removed from the sleep set because it was dependent with >>%s<<",
- transition.to_string().c_str(), parent_state_->get_transition()->to_string().c_str());
- }
+ *remote_app.get_remote_process_memory());
+#endif
+
+ /* If we want sleep set reduction, copy the sleep set and eventually removes things from it */
+ if (_sg_mc_sleep_set) {
+ /* For each actor in the previous sleep set, keep it if it is not dependent with current transition.
+ * And if we kept it and the actor is enabled in this state, mark the actor as already done, so that
+ * it is not explored*/
+ for (auto& [aid, transition] : parent_state_->get_sleep_set()) {
+ if (not incoming_transition_->depends(&transition)) {
+ sleep_set_.try_emplace(aid, transition);
+ if (strategy_->actors_to_run_.count(aid) != 0) {
+ XBT_DEBUG("Actor %ld will not be explored, for it is in the sleep set", aid);
+
+ strategy_->actors_to_run_.at(aid).mark_done();
+ }
+ } else
+ XBT_DEBUG("Transition >>%s<< removed from the sleep set because it was dependent with incoming >>%s<<",
+ transition.to_string().c_str(), incoming_transition_->to_string().c_str());
+ }
}
}
std::size_t State::count_todo() const
{
- return boost::range::count_if(this->actors_to_run_, [](auto& pair) { return pair.second.is_todo(); });
+ return boost::range::count_if(this->strategy_->actors_to_run_, [](auto& pair) { return pair.second.is_todo(); });
}
-void State::mark_all_enabled_todo()
+std::size_t State::count_todo_multiples() const
{
- for (auto const& [aid, _] : this->get_actors_list()) {
- if (this->is_actor_enabled(aid) and not is_actor_done(aid)) {
- this->mark_todo(aid);
- }
- }
-}
+ size_t count = 0;
+ for (auto const& [_, actor] : strategy_->actors_to_run_)
+ if (actor.is_todo())
+ count += actor.get_times_not_considered();
-Transition* State::get_transition() const
-{
- return transition_;
+ return count;
}
aid_t State::next_transition() const
{
- XBT_DEBUG("Search for an actor to run. %zu actors to consider", actors_to_run_.size());
- for (auto const& [aid, actor] : actors_to_run_) {
+ XBT_DEBUG("Search for an actor to run. %zu actors to consider", strategy_->actors_to_run_.size());
+ for (auto const& [aid, actor] : strategy_->actors_to_run_) {
/* Only consider actors (1) marked as interleaving by the checker and (2) currently enabled in the application */
if (not actor.is_todo() || not actor.is_enabled() || actor.is_done()) {
-
if (not actor.is_todo())
XBT_DEBUG("Can't run actor %ld because it is not todo", aid);
return -1;
}
-void State::execute_next(aid_t next, RemoteApp& app)
+std::pair<aid_t, int> State::next_transition_guided() const
+{
+ return strategy_->next_transition();
+}
+
+// This should be done in GuidedState, or at least interact with it
+std::shared_ptr<Transition> State::execute_next(aid_t next, RemoteApp& app)
{
+ // First, warn the guide, so it knows how to build a proper child state
+ strategy_->execute_next(next, app);
+
// This actor is ready to be executed. Execution involves three phases:
// 1. Identify the appropriate ActorState to prepare for execution
// when simcall_handle will be called on it
- auto& actor_state = actors_to_run_.at(next);
+ auto& actor_state = strategy_->actors_to_run_.at(next);
const unsigned times_considered = actor_state.do_consider();
const auto* expected_executed_transition = actor_state.get_transition(times_considered);
xbt_assert(expected_executed_transition != nullptr,
// 2. what action actor `next` was able to take given `times_considered`
// The latter update is important as *more* information is potentially available
// about a transition AFTER it has executed.
- transition_ = just_executed;
-
- auto executed_transition = std::unique_ptr<Transition>(just_executed);
- actor_state.set_transition(std::move(executed_transition), times_considered);
+ outgoing_transition_ = std::shared_ptr<Transition>(just_executed);
+ actor_state.set_transition(outgoing_transition_, times_considered);
app.wait_for_requests();
+
+ return outgoing_transition_;
+}
+
+std::unordered_set<aid_t> State::get_todo_actors() const
+{
+ std::unordered_set<aid_t> actors;
+ for (const auto& [aid, state] : get_actors_list()) {
+ if (state.is_todo()) {
+ actors.insert(aid);
+ }
+ }
+ return actors;
}
+
} // namespace simgrid::mc