1 /* Copyright (c) 2007-2023. 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 #ifndef SIMGRID_MC_UDPOR_UNFOLDING_EVENT_HPP
7 #define SIMGRID_MC_UDPOR_UNFOLDING_EVENT_HPP
9 #include "src/mc/explo/udpor/EventSet.hpp"
10 #include "src/mc/explo/udpor/udpor_forward.hpp"
11 #include "src/mc/transition/Transition.hpp"
13 #include <initializer_list>
17 namespace simgrid::mc::udpor {
19 class UnfoldingEvent {
21 explicit UnfoldingEvent(std::initializer_list<const UnfoldingEvent*> init_list);
22 UnfoldingEvent(EventSet immediate_causes = EventSet(),
23 std::shared_ptr<Transition> transition = std::make_unique<Transition>());
25 UnfoldingEvent(const UnfoldingEvent&) = default;
26 UnfoldingEvent& operator=(UnfoldingEvent const&) = default;
27 UnfoldingEvent(UnfoldingEvent&&) = default;
29 EventSet get_history() const;
30 bool in_history_of(const UnfoldingEvent* other) const;
33 * @brief Whether or not the given event is a decendant
34 * of or an ancestor of the given event
36 bool related_to(const UnfoldingEvent* other) const;
38 /// @brief Whether or not this event is in conflict with
39 /// the given one (i.e. whether `this # other`)
40 bool conflicts_with(const UnfoldingEvent* other) const;
42 /// @brief Whether or not this event is in conflict with
43 /// any event in the given configuration
44 bool conflicts_with(const Configuration& config) const;
46 /// @brief Computes "this #ⁱ other"
47 bool immediately_conflicts_with(const UnfoldingEvent* other) const;
48 bool is_dependent_with(const Transition*) const;
49 bool is_dependent_with(const UnfoldingEvent* other) const;
51 const EventSet& get_immediate_causes() const { return this->immediate_causes; }
52 Transition* get_transition() const { return this->associated_transition.get(); }
53 aid_t get_actor() const { return get_transition()->aid_; }
55 std::string to_string() const;
57 bool operator==(const UnfoldingEvent&) const;
58 bool operator!=(const UnfoldingEvent& other) const { return not(*this == other); }
62 * @brief The transition that UDPOR "attaches" to this
63 * specific event for later use while computing e.g. extension
66 * The transition points to that of a particular actor
67 * in the state reached by the configuration C (recall
68 * this is denoted `state(C)`) that excludes this event.
69 * In other words, this transition was the "next" event
70 * of the actor that executes it in `state(C)`.
72 std::shared_ptr<Transition> associated_transition;
75 * @brief The "immediate" causes of this event.
77 * An event `e` is an immediate cause of an event `e'` if
80 * 2. There is no event `e''` in E such that
81 * `e < e''` and `e'' < e'`
83 * Intuitively, an immediate cause "happened right before"
84 * this event was executed. It is sufficient to store
85 * only the immediate causes of any event `e`, as any indirect
86 * causes of that event would either be an indirect cause
87 * or an immediate cause of the immediate causes of `e`, and
90 EventSet immediate_causes;
93 } // namespace simgrid::mc::udpor