-/* Copyright (c) 2008-2022. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2008-2023. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
long State::expended_states_ = 0;
-State::State(RemoteApp& remote_app) : num_(++expended_states_)
+State::State(const RemoteApp& remote_app) : num_(++expended_states_)
{
remote_app.get_actors_status(actors_to_run_);
- transition_.reset(new Transition());
/* 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_);
Transition* State::get_transition() const
{
- return transition_.get();
+ return transition_;
}
aid_t State::next_transition() const
}
return -1;
}
+
void State::execute_next(aid_t next)
{
- /* This actor is ready to be executed. Prepare its execution when simcall_handle will be called on it */
- const unsigned times_considered = actors_to_run_.at(next).do_consider();
+ // 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);
+ 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,
+ "Expected a transition with %u times considered to be noted in actor %ld", times_considered, next);
XBT_DEBUG("Let's run actor %ld (times_considered = %u)", next, times_considered);
+ // 2. Execute the actor according to the preparation above
Transition::executed_transitions_++;
+ auto* just_executed = mc_model_checker->handle_simcall(next, times_considered, true);
+ xbt_assert(just_executed->type_ == expected_executed_transition->type_,
+ "The transition that was just executed by actor %ld, viz:\n"
+ "%s\n"
+ "is not what was purportedly scheduled to execute, which was:\n"
+ "%s\n",
+ next, just_executed->to_string().c_str(), expected_executed_transition->to_string().c_str());
+
+ // 3. Update the state with the newest information. This means recording
+ // both
+ // 1. what action was last taken from this state (viz. `executed_transition`)
+ // 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);
- transition_.reset(mc_model_checker->handle_simcall(next, times_considered, true));
mc_model_checker->wait_for_requests();
}
} // namespace simgrid::mc