1 /* Copyright (c) 2008-2023. 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/explo/udpor/UnfoldingEvent.hpp"
7 #include "src/mc/explo/udpor/History.hpp"
9 namespace simgrid::mc::udpor {
11 UnfoldingEvent::UnfoldingEvent(std::initializer_list<const UnfoldingEvent*> init_list)
12 : UnfoldingEvent(EventSet(std::move(init_list)))
16 UnfoldingEvent::UnfoldingEvent(EventSet immediate_causes, std::shared_ptr<Transition> transition)
17 : associated_transition(std::move(transition)), immediate_causes(std::move(immediate_causes))
21 bool UnfoldingEvent::operator==(const UnfoldingEvent& other) const
23 const bool same_actor = associated_transition->aid_ == other.associated_transition->aid_;
27 // TODO: Add in information to determine which step in the sequence this actor was executed
29 // All unfolding event objects are created in reference to
30 // an Unfolding object which owns them. Hence, the references
31 // they contain to other events in the unfolding can
32 // be used as intrinsic identities (i.e. we don't need to
33 // recursively check if each of our causes has a `==` in
34 // the other event's causes)
35 return this->immediate_causes == other.immediate_causes;
38 EventSet UnfoldingEvent::get_history() const
40 return History(this).get_all_events();
43 bool UnfoldingEvent::related_to(const UnfoldingEvent* other) const
45 return this->in_history_of(other) or other->in_history_of(this);
48 bool UnfoldingEvent::in_history_of(const UnfoldingEvent* other) const
50 return History(other).contains(this);
53 bool UnfoldingEvent::conflicts_with(const UnfoldingEvent* other) const
55 // Events that have a causal relation never are in conflict
56 // in an unfolding structure. Two events in conflict must
57 // not be contained in each other's histories
58 if (related_to(other)) {
62 const EventSet my_history = get_history();
63 const EventSet other_history = other->get_history();
64 const EventSet unique_to_me = my_history.subtracting(other_history);
65 const EventSet unique_to_other = other_history.subtracting(my_history);
67 const bool conflicts_with_me = std::any_of(unique_to_me.begin(), unique_to_me.end(), [&](const UnfoldingEvent* e) {
68 return e->has_dependent_transition_with(other);
70 const bool conflicts_with_other =
71 std::any_of(unique_to_other.begin(), unique_to_other.end(),
72 [&](const UnfoldingEvent* e) { return e->has_dependent_transition_with(this); });
73 return conflicts_with_me or conflicts_with_other;
76 bool UnfoldingEvent::conflicts_with(const Configuration& config) const
78 // A configuration is itself already conflict-free. Thus, it is
79 // simply a matter of testing whether or not the transition associated
80 // with the event is dependent with any already in `config` that are
81 // OUTSIDE this event's history (in an unfolding, events only conflict
82 // if they are not related)
83 const EventSet potential_conflicts = config.get_events().subtracting(get_history());
84 return std::any_of(potential_conflicts.cbegin(), potential_conflicts.cend(),
85 [&](const UnfoldingEvent* e) { return this->has_dependent_transition_with(e); });
88 bool UnfoldingEvent::has_dependent_transition_with(const UnfoldingEvent* other) const
90 return associated_transition->depends(other->associated_transition.get());
93 } // namespace simgrid::mc::udpor