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 UnfoldingEvent(std::initializer_list<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* otherEvent) const;
32 bool conflicts_with(const UnfoldingEvent* otherEvent) const;
33 bool conflicts_with(const Configuration& config) const;
34 bool immediately_conflicts_with(const UnfoldingEvent* otherEvt) const;
36 const EventSet& get_immediate_causes() const { return this->immediate_causes; }
37 Transition* get_transition() const { return this->associated_transition.get(); }
39 bool operator==(const UnfoldingEvent&) const;
43 * @brief The transition that UDPOR "attaches" to this
44 * specific event for later use while computing e.g. extension
47 * The transition points to that of a particular actor
48 * in the state reached by the configuration C (recall
49 * this is denoted `state(C)`) that excludes this event.
50 * In other words, this transition was the "next" event
51 * of the actor that executes it in `state(C)`.
53 std::shared_ptr<Transition> associated_transition;
56 * @brief The "immediate" causes of this event.
58 * An event `e` is an immediate cause of an event `e'` if
61 * 2. There is no event `e''` in E such that
62 * `e < e''` and `e'' < e'`
64 * Intuitively, an immediate cause "happened right before"
65 * this event was executed. It is sufficient to store
66 * only the immediate causes of any event `e`, as any indirect
67 * causes of that event would either be an indirect cause
68 * or an immediate cause of the immediate causes of `e`, and
71 EventSet immediate_causes;
74 } // namespace simgrid::mc::udpor