* under the terms of the license (GNU LGPL) which comes with this package. */
#include "src/mc/explo/udpor/UnfoldingEvent.hpp"
+#include "src/mc/explo/udpor/History.hpp"
namespace simgrid::mc::udpor {
-UnfoldingEvent::UnfoldingEvent(unsigned int nb_events, std::string const& trans_tag, EventSet const& immediate_causes)
- : UnfoldingEvent(nb_events, trans_tag, immediate_causes, 0)
+UnfoldingEvent::UnfoldingEvent(std::initializer_list<const UnfoldingEvent*> init_list)
+ : UnfoldingEvent(EventSet(std::move(init_list)))
{
- // TODO: Implement this correctly
}
-UnfoldingEvent::UnfoldingEvent(unsigned int nb_events, std::string const& trans_tag, EventSet const& immediate_causes,
- StateHandle sid)
+UnfoldingEvent::UnfoldingEvent(EventSet immediate_causes, std::shared_ptr<Transition> transition)
+ : associated_transition(std::move(transition)), immediate_causes(std::move(immediate_causes))
{
- // TODO: Implement this
+}
+
+bool UnfoldingEvent::operator==(const UnfoldingEvent& other) const
+{
+ // Must be run by the same actor
+ if (associated_transition->aid_ != other.associated_transition->aid_)
+ return false;
+
+ // If run by the same actor, must be the same _step_ of that actor's
+ // execution
+
+ // TODO: Add in information to determine which step in the sequence this actor was executed
+
+ // All unfolding event objects are created in reference to
+ // an Unfolding object which owns them. Hence, the references
+ // they contain to other events in the unfolding can
+ // be used as intrinsic identities (i.e. we don't need to
+ // recursively check if each of our causes has a `==` in
+ // the other event's causes)
+ return this->immediate_causes == other.immediate_causes;
+}
+
+EventSet UnfoldingEvent::get_history() const
+{
+ return History(this).get_all_events();
+}
+
+bool UnfoldingEvent::related_to(const UnfoldingEvent* other) const
+{
+ return this->in_history_of(other) or other->in_history_of(this);
+}
+
+bool UnfoldingEvent::in_history_of(const UnfoldingEvent* other) const
+{
+ return History(other).contains(this);
+}
+
+bool UnfoldingEvent::conflicts_with(const UnfoldingEvent* other) const
+{
+ // Events that have a causal relation never are in conflict
+ // in an unfolding structure. Two events in conflict must
+ // not be contained in each other's histories
+ if (related_to(other)) {
+ return false;
+ }
+
+ const EventSet my_history = get_history();
+ const EventSet other_history = other->get_history();
+ const EventSet unique_to_me = my_history.subtracting(other_history);
+ const EventSet unique_to_other = other_history.subtracting(my_history);
+
+ const bool conflicts_with_me = std::any_of(unique_to_me.begin(), unique_to_me.end(),
+ [&](const UnfoldingEvent* e) { return e->is_dependent_with(other); });
+ const bool conflicts_with_other = std::any_of(unique_to_other.begin(), unique_to_other.end(),
+ [&](const UnfoldingEvent* e) { return e->is_dependent_with(this); });
+ return conflicts_with_me or conflicts_with_other;
+}
+
+bool UnfoldingEvent::conflicts_with(const Configuration& config) const
+{
+ // A configuration is itself already conflict-free. Thus, it is
+ // simply a matter of testing whether or not the transition associated
+ // with the event is dependent with any already in `config` that are
+ // OUTSIDE this event's history (in an unfolding, events only conflict
+ // if they are not related)
+ const EventSet potential_conflicts = config.get_events().subtracting(get_history());
+ return std::any_of(potential_conflicts.cbegin(), potential_conflicts.cend(),
+ [&](const UnfoldingEvent* e) { return this->is_dependent_with(e); });
+}
+
+bool UnfoldingEvent::immediately_conflicts_with(const UnfoldingEvent* other) const
+{
+ // They have to be in conflict at a minimum
+ if (not conflicts_with(other)) {
+ return false;
+ }
+
+ auto combined_events = History(EventSet{this, other}).get_all_events();
+
+ // See the definition of immediate conflicts in the original paper on UDPOR
+ {
+ combined_events.remove(this);
+ if (not combined_events.is_valid_configuration()) {
+ return false;
+ }
+ combined_events.insert(this);
+ }
+
+ {
+ combined_events.remove(other);
+ if (not combined_events.is_valid_configuration()) {
+ return false;
+ }
+ combined_events.insert(other);
+ }
+
+ return true;
+}
+
+bool UnfoldingEvent::is_dependent_with(const Transition* t) const
+{
+ return associated_transition->depends(t);
+}
+
+bool UnfoldingEvent::is_dependent_with(const UnfoldingEvent* other) const
+{
+ return is_dependent_with(other->associated_transition.get());
}
} // namespace simgrid::mc::udpor
