namespace simgrid::mc::udpor {
EventSet ExtensionSetCalculator::partially_extend(const Configuration& C, Unfolding* U,
- const std::shared_ptr<Transition> action)
+ std::shared_ptr<Transition> action)
{
- switch (action->type_) {
- case Transition::Type::COMM_WAIT: {
- return partially_extend_CommWait(C, U, std::static_pointer_cast<CommWaitTransition>(std::move(action)));
- }
- case Transition::Type::COMM_ASYNC_SEND: {
- return partially_extend_CommSend(C, U, std::static_pointer_cast<CommSendTransition>(std::move(action)));
- }
- case Transition::Type::COMM_ASYNC_RECV: {
- return partially_extend_CommRecv(C, U, std::static_pointer_cast<CommRecvTransition>(std::move(action)));
- }
- default: {
- xbt_assert(false,
- "There is currently no specialized computation for the transition "
- "'%s' for computing extension sets in UDPOR, so the model checker cannot "
- "determine how to proceed. Please submit a bug report requesting "
- "that the transition be supported in SimGrid using UDPOR and consider "
- "using the other model-checking algorithms supported by SimGrid instead "
- "in the meantime",
- action->to_string().c_str());
- DIE_IMPOSSIBLE;
- }
+ using Action = Transition::Type;
+ using Handler = std::function<EventSet(const Configuration&, Unfolding*, const std::shared_ptr<Transition>)>;
+ using HandlerMap = std::unordered_map<Action, Handler>;
+
+ const static HandlerMap handlers = {
+ {Action::COMM_ASYNC_RECV, &ExtensionSetCalculator::partially_extend_CommRecv},
+ {Action::COMM_ASYNC_SEND, &ExtensionSetCalculator::partially_extend_CommSend},
+ {Action::COMM_WAIT, &ExtensionSetCalculator::partially_extend_CommWait},
+ {Action::COMM_TEST, &ExtensionSetCalculator::partially_extend_CommTest},
+ {Action::MUTEX_ASYNC_LOCK, &ExtensionSetCalculator::partially_extend_MutexAsyncLock},
+ {Action::MUTEX_UNLOCK, &ExtensionSetCalculator::partially_extend_MutexUnlock},
+ {Action::MUTEX_WAIT, &ExtensionSetCalculator::partially_extend_MutexWait},
+ {Action::MUTEX_TEST, &ExtensionSetCalculator::partially_extend_MutexTest},
+ {Action::ACTOR_JOIN, &ExtensionSetCalculator::partially_extend_ActorJoin}};
+
+ if (const auto handler = handlers.find(action->type_); handler != handlers.end()) {
+ return handler->second(C, U, std::move(action));
+ } else {
+ xbt_die("There is currently no specialized computation for the transition "
+ "'%s' for computing extension sets in UDPOR, so the model checker cannot "
+ "determine how to proceed. Please submit a bug report requesting "
+ "that the transition be supported in SimGrid using UDPOR and consider "
+ "using the other model-checking algorithms supported by SimGrid instead "
+ "in the meantime",
+ action->to_string().c_str());
}
}
EventSet ExtensionSetCalculator::partially_extend_CommSend(const Configuration& C, Unfolding* U,
- const std::shared_ptr<CommSendTransition> send_action)
+ std::shared_ptr<Transition> action)
{
EventSet exC;
- // TODO: if this is the first action by the actor, no such previous event exists.
- // How do we react here? Do we say we're dependent with the root event?
+ const auto send_action = std::static_pointer_cast<CommSendTransition>(action);
+ const auto pre_event_a_C = C.pre_event(send_action->aid_);
const unsigned sender_mailbox = send_action->get_mailbox();
- const auto pre_event_a_C = C.pre_event(send_action->aid_).value();
// 1. Create `e' := <a, config(preEvt(a, C))>` and add `e'` to `ex(C)`
- const auto e_prime = U->discover_event(EventSet({pre_event_a_C}), send_action);
- exC.insert(e_prime);
+ // NOTE: If `preEvt(a, C)` doesn't exist, we're effectively asking
+ // about `config({})`
+ if (pre_event_a_C.has_value()) {
+ const auto* e_prime = U->discover_event(EventSet({pre_event_a_C.value()}), send_action);
+ exC.insert(e_prime);
+ } else {
+ const auto* e_prime = U->discover_event(EventSet(), send_action);
+ exC.insert(e_prime);
+ }
+
+ // 2. foreach e ∈ C s.t. λ(e) ∈ {AsyncSend(m, _), TestAny(Com)} where
+ // Com contains a matching c' = AsyncReceive(m, _) with `action`
+ for (const auto e : C) {
+ const bool transition_type_check = [&]() {
+ const auto* async_send = dynamic_cast<const CommSendTransition*>(e->get_transition());
+ return async_send && async_send->get_mailbox() == sender_mailbox;
+ // TODO: Add `TestAny` dependency
+ }();
+
+ if (transition_type_check) {
+ EventSet K = EventSet({e, pre_event_a_C.value_or(e)}).get_largest_maximal_subset();
+
+ // TODO: Check D_K(a, lambda(e)) (only matters in the case of CommTest)
+ const auto e_prime = U->discover_event(std::move(K), send_action);
+ exC.insert(e_prime);
+ }
+ }
+
+ // TODO: Add `TestAny` dependency case
+ return exC;
+}
+
+EventSet ExtensionSetCalculator::partially_extend_CommRecv(const Configuration& C, Unfolding* U,
+ std::shared_ptr<Transition> action)
+{
+ EventSet exC;
+
+ const auto recv_action = std::static_pointer_cast<CommRecvTransition>(action);
+ const unsigned recv_mailbox = recv_action->get_mailbox();
+ const auto pre_event_a_C = C.pre_event(recv_action->aid_);
+
+ // 1. Create `e' := <a, config(preEvt(a, C))>` and add `e'` to `ex(C)`
+ if (pre_event_a_C.has_value()) {
+ const auto* e_prime = U->discover_event(EventSet({pre_event_a_C.value()}), recv_action);
+ exC.insert(e_prime);
+ } else {
+ const auto* e_prime = U->discover_event(EventSet(), recv_action);
+ exC.insert(e_prime);
+ }
// 2. foreach e ∈ C s.t. λ(e) ∈ {AsyncSend(m, _), TestAny(Com)} where
// Com contains a matching c' = AsyncReceive(m, _) with a
for (const auto e : C) {
const bool transition_type_check = [&]() {
- if (const auto* async_send = dynamic_cast<const CommSendTransition*>(e->get_transition());
- e != nullptr && async_send->get_mailbox() == sender_mailbox) {
- return true;
- } else if (const auto* e_test_any = dynamic_cast<const CommTestTransition*>(e->get_transition());
- e_test_any != nullptr) {
- // TODO: Check if there's a way to find a matching AsyncReceive -> matching when? in the history?
- return true;
- }
- return false;
+ const auto* async_recv = dynamic_cast<const CommRecvTransition*>(e->get_transition());
+ return async_recv && async_recv->get_mailbox() == recv_mailbox;
+ // TODO: Add `TestAny` dependency
}();
if (transition_type_check) {
- const EventSet K = EventSet({e, pre_event_a_C}).get_largest_maximal_subset();
+ EventSet K = EventSet({e, pre_event_a_C.value_or(e)}).get_largest_maximal_subset();
- // TODO: How do we compute D_K(a, b)? There's a specialized
- // function for each case it appears, but I don't see where
- // `config(K)` comes in
- if (false) {
- const auto e_prime = U->discover_event(std::move(K), send_action);
+ // TODO: Check D_K(a, lambda(e)) (ony matters in the case of TestAny)
+ if (true) {
+ const auto* e_prime = U->discover_event(std::move(K), recv_action);
exC.insert(e_prime);
}
}
}
+ // TODO: Add `TestAny` dependency case
return exC;
}
-EventSet ExtensionSetCalculator::partially_extend_CommRecv(const Configuration& C, Unfolding* U,
- const std::shared_ptr<CommRecvTransition> recv_action)
+EventSet ExtensionSetCalculator::partially_extend_CommWait(const Configuration& C, Unfolding* U,
+ std::shared_ptr<Transition> action)
{
- return EventSet();
+ EventSet exC;
+
+ const auto wait_action = std::static_pointer_cast<CommWaitTransition>(action);
+ const auto wait_comm = wait_action->get_comm();
+ const auto pre_event_a_C = C.pre_event(wait_action->aid_);
+
+ // Determine the _issuer_ of the communication of the `CommWait` event
+ // in `C`. The issuer of the `CommWait` in `C` is the event in `C`
+ // whose transition is the `CommRecv` or `CommSend` whose resulting
+ // communication this `CommWait` waits on
+ const auto issuer = std::find_if(C.begin(), C.end(), [&](const UnfoldingEvent* e) {
+ if (const auto* e_issuer_receive = dynamic_cast<const CommRecvTransition*>(e->get_transition())) {
+ return e_issuer_receive->aid_ == wait_action->aid_ && wait_comm == e_issuer_receive->get_comm();
+ }
+
+ if (const auto* e_issuer_send = dynamic_cast<const CommSendTransition*>(e->get_transition())) {
+ return e_issuer_send->aid_ == wait_action->aid_ && wait_comm == e_issuer_send->get_comm();
+ }
+
+ return false;
+ });
+ xbt_assert(issuer != C.end(),
+ "Invariant violation! A (supposedly) enabled `CommWait` transition "
+ "waiting on communication %u should not be enabled: the receive/send "
+ "transition which generated the communication is not an action taken "
+ "to reach state(C) (the state of the configuration), which should "
+ "be an impossibility if `%s` is enabled. Please report this as "
+ "a bug in SimGrid's UDPOR implementation",
+ wait_action->get_comm(), wait_action->to_string(false).c_str());
+ const UnfoldingEvent* e_issuer = *issuer;
+ const History e_issuer_history(e_issuer);
+
+ // 1. if `a` is enabled at state(config({preEvt(a,C)})), then
+ // create `e' := <a, config({preEvt(a,C)})>` and add `e'` to `ex(C)`
+ //
+ // First, if `pre_event_a_C == std::nullopt`, then there is nothing to
+ // do: `CommWait` will never be enabled in the empty configuration (at
+ // least two actions must be executed before)
+ if (pre_event_a_C.has_value(); const auto* unwrapped_pre_event = pre_event_a_C.value()) {
+ // A necessary condition is that the issuer be present in
+ // config({preEvt(a, C)}); otherwise, the `CommWait` could not
+ // be enabled since the communication on which it waits would not
+ // have been created for it!
+ if (const auto config_pre_event = History(unwrapped_pre_event); config_pre_event.contains(e_issuer)) {
+ // If the issuer is a `CommRecv` (resp. `CommSend`), then we check that there
+ // are at least as many `CommSend` (resp. `CommRecv`) transitions in `config_pre_event`
+ // as needed to reach the receive/send number that is `issuer`.
+ // ...
+ // ...
+ if (const auto* e_issuer_receive = dynamic_cast<const CommRecvTransition*>(e_issuer->get_transition())) {
+ const unsigned issuer_mailbox = e_issuer_receive->get_mailbox();
+
+ // Check from the config -> how many sends have there been
+ const unsigned send_position =
+ std::count_if(config_pre_event.begin(), config_pre_event.end(), [=](const auto e) {
+ const auto* e_send = dynamic_cast<const CommSendTransition*>(e->get_transition());
+ return e_send && e_send->get_mailbox() == issuer_mailbox;
+ });
+
+ // Check from e_issuer -> what place is the issuer in?
+ const unsigned receive_position =
+ std::count_if(e_issuer_history.begin(), e_issuer_history.end(), [=](const auto e) {
+ const auto* e_receive = dynamic_cast<const CommRecvTransition*>(e->get_transition());
+ return e_receive && e_receive->get_mailbox() == issuer_mailbox;
+ });
+
+ if (send_position >= receive_position) {
+ exC.insert(U->discover_event(EventSet({unwrapped_pre_event}), wait_action));
+ }
+
+ } else if (const auto* e_issuer_send = dynamic_cast<const CommSendTransition*>(e_issuer->get_transition())) {
+ const unsigned issuer_mailbox = e_issuer_send->get_mailbox();
+
+ // Check from e_issuer -> what place is the issuer in?
+ const unsigned send_position =
+ std::count_if(e_issuer_history.begin(), e_issuer_history.end(), [=](const auto e) {
+ const auto* e_send = dynamic_cast<const CommSendTransition*>(e->get_transition());
+ return e_send && e_send->get_mailbox() == issuer_mailbox;
+ });
+
+ // Check from the config -> how many sends have there been
+ const unsigned receive_position =
+ std::count_if(config_pre_event.begin(), config_pre_event.end(), [=](const auto e) {
+ const auto* e_receive = dynamic_cast<const CommRecvTransition*>(e->get_transition());
+ return e_receive && e_receive->get_mailbox() == issuer_mailbox;
+ });
+
+ if (send_position <= receive_position) {
+ exC.insert(U->discover_event(EventSet({unwrapped_pre_event}), wait_action));
+ }
+
+ } else {
+ xbt_die("The transition which created the communication on which `%s` waits "
+ "is neither an async send nor an async receive. The current UDPOR "
+ "implementation does not know how to check if `CommWait` is enabled in "
+ "this case. Was a new transition added?",
+ e_issuer->get_transition()->to_string().c_str());
+ }
+ }
+ }
+
+ // 3. foreach event e in C do
+ if (const auto* e_issuer_send = dynamic_cast<const CommSendTransition*>(e_issuer->get_transition())) {
+ for (const auto e : C) {
+ // If the provider of the communication for `CommWait` is a
+ // `CommSend(m)`, then we only care about `e` if `λ(e) == `CommRecv(m)`.
+ // All other actions would be independent with the wait action (including
+ // another `CommSend` to the same mailbox: `CommWait` is "waiting" for its
+ // corresponding receive action)
+ if (e->get_transition()->type_ != Transition::Type::COMM_ASYNC_RECV) {
+ continue;
+ }
+
+ const auto issuer_mailbox = e_issuer_send->get_mailbox();
+ if (const auto* e_recv = dynamic_cast<const CommRecvTransition*>(e->get_transition());
+ e_recv->get_mailbox() != issuer_mailbox) {
+ continue;
+ }
+
+ // If the `issuer` is not in `config(K)`, this implies that
+ // `WaitAny()` is always disabled in `config(K)`; hence, it
+ // is independent of any transition in `config(K)` (according
+ // to formal definition of independence)
+ auto K = EventSet({e, pre_event_a_C.value_or(e)});
+ const auto config_K = History(K);
+ if (not config_K.contains(e_issuer)) {
+ continue;
+ }
+
+ // What send # is the issuer
+ const unsigned send_position =
+ std::count_if(e_issuer_history.begin(), e_issuer_history.end(), [=](const auto ev) {
+ const auto* e_send = dynamic_cast<const CommSendTransition*>(ev->get_transition());
+ return e_send && e_send->get_mailbox() == issuer_mailbox;
+ });
+
+ // What receive # is the event `e`?
+ const unsigned receive_position = std::count_if(config_K.begin(), config_K.end(), [=](const auto ev) {
+ const auto* e_receive = dynamic_cast<const CommRecvTransition*>(ev->get_transition());
+ return e_receive && e_receive->get_mailbox() == issuer_mailbox;
+ });
+
+ if (send_position == receive_position) {
+ exC.insert(U->discover_event(std::move(K), wait_action));
+ }
+ }
+ } else if (const auto* e_issuer_recv = dynamic_cast<const CommRecvTransition*>(e_issuer->get_transition())) {
+ for (const auto e : C) {
+ // If the provider of the communication for `CommWait` is a
+ // `CommRecv(m)`, then we only care about `e` if `λ(e) == `CommSend(m)`.
+ // All other actions would be independent with the wait action (including
+ // another `CommRecv` to the same mailbox: `CommWait` is "waiting" for its
+ // corresponding send action)
+ if (e->get_transition()->type_ != Transition::Type::COMM_ASYNC_SEND) {
+ continue;
+ }
+
+ const auto issuer_mailbox = e_issuer_recv->get_mailbox();
+ if (const auto* e_send = dynamic_cast<const CommSendTransition*>(e->get_transition());
+ e_send->get_mailbox() != issuer_mailbox) {
+ continue;
+ }
+
+ // If the `issuer` is not in `config(K)`, this implies that
+ // `WaitAny()` is always disabled in `config(K)`; hence, it
+ // is independent of any transition in `config(K)` (according
+ // to formal definition of independence)
+ auto K = EventSet({e, pre_event_a_C.value_or(e)});
+ const auto config_K = History(K);
+ if (not config_K.contains(e_issuer)) {
+ continue;
+ }
+
+ // What receive # is the event `e`?
+ const unsigned send_position = std::count_if(config_K.begin(), config_K.end(), [=](const auto ev) {
+ const auto* e_send = dynamic_cast<const CommSendTransition*>(ev->get_transition());
+ return e_send && e_send->get_mailbox() == issuer_mailbox;
+ });
+
+ // What send # is the issuer
+ const unsigned receive_position =
+ std::count_if(e_issuer_history.begin(), e_issuer_history.end(), [=](const auto ev) {
+ const auto* e_receive = dynamic_cast<const CommRecvTransition*>(ev->get_transition());
+ return e_receive && e_receive->get_mailbox() == issuer_mailbox;
+ });
+
+ if (send_position == receive_position) {
+ exC.insert(U->discover_event(std::move(K), wait_action));
+ }
+ }
+ } else {
+ xbt_die("The transition which created the communication on which `%s` waits "
+ "is neither an async send nor an async receive. The current UDPOR "
+ "implementation does not know how to check if `CommWait` is enabled in "
+ "this case. Was a new transition added?",
+ e_issuer->get_transition()->to_string().c_str());
+ }
+
+ return exC;
}
-EventSet ExtensionSetCalculator::partially_extend_CommWait(const Configuration&, Unfolding* U,
- std::shared_ptr<CommWaitTransition> wait_action)
+EventSet ExtensionSetCalculator::partially_extend_CommTest(const Configuration& C, Unfolding* U,
+ std::shared_ptr<Transition> action)
{
- return EventSet();
+ EventSet exC;
+
+ const auto test_action = std::static_pointer_cast<CommTestTransition>(action);
+ const auto test_comm = test_action->get_comm();
+ const auto test_aid = test_action->aid_;
+ const auto pre_event_a_C = C.pre_event(test_action->aid_);
+
+ // Add the previous event as a dependency (if it's there)
+ if (pre_event_a_C.has_value()) {
+ const auto e_prime = U->discover_event(EventSet({pre_event_a_C.value()}), test_action);
+ exC.insert(e_prime);
+ }
+
+ // Determine the _issuer_ of the communication of the `CommTest` event
+ // in `C`. The issuer of the `CommTest` in `C` is the event in `C`
+ // whose transition is the `CommRecv` or `CommSend` whose resulting
+ // communication this `CommTest` tests on
+ const auto issuer = std::find_if(C.begin(), C.end(), [=](const UnfoldingEvent* e) {
+ if (const auto* e_issuer_receive = dynamic_cast<const CommRecvTransition*>(e->get_transition())) {
+ return e_issuer_receive->aid_ == test_aid && test_comm == e_issuer_receive->get_comm();
+ }
+
+ if (const auto* e_issuer_send = dynamic_cast<const CommSendTransition*>(e->get_transition())) {
+ return e_issuer_send->aid_ == test_aid && test_comm == e_issuer_send->get_comm();
+ }
+
+ return false;
+ });
+ xbt_assert(issuer != C.end(),
+ "An enabled `CommTest` transition (%s) is testing a communication"
+ "%u not created by a receive/send "
+ "transition. SimGrid cannot currently handle test actions "
+ "under which a test is performed on a communication that was "
+ "not directly created by a receive/send operation of the same actor.",
+ test_action->to_string(false).c_str(), test_action->get_comm());
+ const UnfoldingEvent* e_issuer = *issuer;
+ const History e_issuer_history(e_issuer);
+
+ // 3. foreach event e in C do
+ if (const auto* e_issuer_send = dynamic_cast<const CommSendTransition*>(e_issuer->get_transition())) {
+ for (const auto e : C) {
+ // If the provider of the communication for `CommTest` is a
+ // `CommSend(m)`, then we only care about `e` if `λ(e) == `CommRecv(m)`.
+ // All other actions would be independent with the test action (including
+ // another `CommSend` to the same mailbox: `CommTest` is testing the
+ // corresponding receive action)
+ if (e->get_transition()->type_ != Transition::Type::COMM_ASYNC_RECV) {
+ continue;
+ }
+
+ const auto issuer_mailbox = e_issuer_send->get_mailbox();
+
+ if (const auto* e_recv = dynamic_cast<const CommRecvTransition*>(e->get_transition());
+ e_recv->get_mailbox() != issuer_mailbox) {
+ continue;
+ }
+
+ // If the `issuer` is not in `config(K)`, this implies that
+ // `CommTest()` is always disabled in `config(K)`; hence, it
+ // is independent of any transition in `config(K)` (according
+ // to formal definition of independence)
+ auto K = EventSet({e, pre_event_a_C.value_or(e)});
+ const auto config_K = History(K);
+ if (not config_K.contains(e_issuer)) {
+ continue;
+ }
+
+ // What send # is the issuer
+ const unsigned send_position =
+ std::count_if(e_issuer_history.begin(), e_issuer_history.end(), [=](const auto ev) {
+ const auto* e_send = dynamic_cast<const CommSendTransition*>(ev->get_transition());
+ return e_send && e_send->get_mailbox() == issuer_mailbox;
+ });
+
+ // What receive # is the event `e`?
+ const unsigned receive_position = std::count_if(config_K.begin(), config_K.end(), [=](const auto ev) {
+ const auto* e_receive = dynamic_cast<const CommRecvTransition*>(ev->get_transition());
+ return e_receive && e_receive->get_mailbox() == issuer_mailbox;
+ });
+
+ if (send_position == receive_position) {
+ exC.insert(U->discover_event(std::move(K), test_action));
+ }
+ }
+ } else if (const auto* e_issuer_recv = dynamic_cast<const CommRecvTransition*>(e_issuer->get_transition())) {
+ for (const auto e : C) {
+ // If the provider of the communication for `CommTest` is a
+ // `CommRecv(m)`, then we only care about `e` if `λ(e) == `CommSend(m)`.
+ // All other actions would be independent with the wait action (including
+ // another `CommRecv` to the same mailbox: `CommWait` is "waiting" for its
+ // corresponding send action)
+ if (e->get_transition()->type_ != Transition::Type::COMM_ASYNC_SEND) {
+ continue;
+ }
+
+ const auto issuer_mailbox = e_issuer_recv->get_mailbox();
+ if (const auto* e_send = dynamic_cast<const CommSendTransition*>(e->get_transition());
+ e_send->get_mailbox() != issuer_mailbox) {
+ continue;
+ }
+
+ // If the `issuer` is not in `config(K)`, this implies that
+ // `WaitAny()` is always disabled in `config(K)`; hence, it
+ // is independent of any transition in `config(K)` (according
+ // to formal definition of independence)
+ auto K = EventSet({e, pre_event_a_C.value_or(e)});
+ const auto config_K = History(K);
+ if (not config_K.contains(e_issuer)) {
+ continue;
+ }
+
+ // What receive # is the event `e`?
+ const unsigned send_position = std::count_if(config_K.begin(), config_K.end(), [=](const auto ev) {
+ const auto* e_send = dynamic_cast<const CommSendTransition*>(ev->get_transition());
+ return e_send && e_send->get_mailbox() == issuer_mailbox;
+ });
+
+ // What send # is the issuer
+ const unsigned receive_position =
+ std::count_if(e_issuer_history.begin(), e_issuer_history.end(), [=](const auto ev) {
+ const auto* e_receive = dynamic_cast<const CommRecvTransition*>(ev->get_transition());
+ return e_receive && e_receive->get_mailbox() == issuer_mailbox;
+ });
+
+ if (send_position == receive_position) {
+ exC.insert(U->discover_event(std::move(K), test_action));
+ }
+ }
+ } else {
+ xbt_die("The transition which created the communication on which `%s` waits "
+ "is neither an async send nor an async receive. The current UDPOR "
+ "implementation does not know how to check if `CommWait` is enabled in "
+ "this case. Was a new transition added?",
+ e_issuer->get_transition()->to_string().c_str());
+ }
+ return exC;
}
-EventSet ExtensionSetCalculator::partially_extend_CommTest(const Configuration&, Unfolding* U,
- std::shared_ptr<CommTestTransition> test_action)
+EventSet ExtensionSetCalculator::partially_extend_MutexAsyncLock(const Configuration& C, Unfolding* U,
+ std::shared_ptr<Transition> action)
{
- return EventSet();
- // EventSet exC;
-
- // // TODO: if this is the first action by the actor, no such previous event exists.
- // // How do we react here? Do we say we're dependent with the root event?
- // const auto tested_mailbox = test_action->get_mailbox();
- // const auto pre_event_a_C = C.pre_event(send_action->aid_).value();
-
- // for (const auto e : C) {
- // if (e == pre_event_a_C) {
- // const auto e_prime = U->discover_event(EventSet({pre_event_a_C.value()}), action);
- // exC.insert(e_prime);
- // } else {
- // // TODO: Check condition
- // const bool should_process = [&]() { return false; }();
-
- // EventSet K;
- // if (not(e < pre_event_a_C))
- // K.insert(e);
- // if (not(pre_event_a_C < e))
- // K.insert(pre_event_a_C);
-
- // // TODO: How do we compute D_K(a, b)? There's a specialized
- // // function for each case it appears, but I don't see where
- // // `config(K)` comes in
- // if (should_process) {
- // const auto e_prime = U->discover_event(std::move(K), action);
- // exC.insert(e_prime);
- // }
- // }
- // }
+ EventSet exC;
+ const auto mutex_lock = std::static_pointer_cast<MutexTransition>(action);
+ const auto pre_event_a_C = C.pre_event(mutex_lock->aid_);
+
+ // for each event e in C
+ // 1. If lambda(e) := pre(a) -> add it. Note that if
+ // pre_event_a_C.has_value() == false, this implies `C` is
+ // empty or which we treat as implicitly containing the bottom event
+ if (pre_event_a_C.has_value()) {
+ const auto e_prime = U->discover_event(EventSet({pre_event_a_C.value()}), mutex_lock);
+ exC.insert(e_prime);
+ } else {
+ const auto e_prime = U->discover_event(EventSet(), mutex_lock);
+ exC.insert(e_prime);
+ }
+
+ // for each event e in C
+ for (const auto e : C) {
+ // Check for other locks on the same mutex
+ if (const auto* e_mutex = dynamic_cast<const MutexTransition*>(e->get_transition());
+ e_mutex->type_ == Transition::Type::MUTEX_ASYNC_LOCK && mutex_lock->get_mutex() == e_mutex->get_mutex()) {
+ auto K = EventSet({e, pre_event_a_C.value_or(e)});
+ exC.insert(U->discover_event(std::move(K), mutex_lock));
+ }
+ }
+ return exC;
+}
+
+EventSet ExtensionSetCalculator::partially_extend_MutexUnlock(const Configuration& C, Unfolding* U,
+ std::shared_ptr<Transition> action)
+{
+ EventSet exC;
+ const auto mutex_unlock = std::static_pointer_cast<MutexTransition>(action);
+ const auto pre_event_a_C = C.pre_event(mutex_unlock->aid_);
+
+ // for each event e in C
+ // 1. If lambda(e) := pre(a) -> add it. Note that if
+ // pre_event_a_C.has_value() == false, this implies `C` is
+ // empty or which we treat as implicitly containing the bottom event
+ if (pre_event_a_C.has_value()) {
+ const auto e_prime = U->discover_event(EventSet({pre_event_a_C.value()}), mutex_unlock);
+ exC.insert(e_prime);
+ } else {
+ const auto e_prime = U->discover_event(EventSet(), mutex_unlock);
+ exC.insert(e_prime);
+ }
+
+ // for each event e in C
+ for (const auto e : C) {
+ // Check for MutexTest
+ if (const auto* e_mutex = dynamic_cast<const MutexTransition*>(e->get_transition());
+ e_mutex->type_ == Transition::Type::MUTEX_TEST || e_mutex->type_ == Transition::Type::MUTEX_WAIT) {
+ // TODO: Check if dependent or not
+ // This entails getting information about
+ // the relative position of the mutex in the queue, which
+ // again means we need more context...
+ auto K = EventSet({e, pre_event_a_C.value_or(e)});
+ exC.insert(U->discover_event(std::move(K), mutex_unlock));
+ }
+ }
+ return exC;
+}
+
+EventSet ExtensionSetCalculator::partially_extend_MutexWait(const Configuration& C, Unfolding* U,
+ std::shared_ptr<Transition> action)
+{
+ EventSet exC;
+ const auto mutex_wait = std::static_pointer_cast<MutexTransition>(action);
+ const auto pre_event_a_C = C.pre_event(mutex_wait->aid_);
+
+ // for each event e in C
+ // 1. If lambda(e) := pre(a) -> add it. In the case of MutexWait, we also check that the
+ // actor which is executing the MutexWait is the owner of the mutex
+ if (pre_event_a_C.has_value() && mutex_wait->get_owner() == mutex_wait->aid_) {
+ const auto e_prime = U->discover_event(EventSet({pre_event_a_C.value()}), mutex_wait);
+ exC.insert(e_prime);
+ } else {
+ const auto e_prime = U->discover_event(EventSet(), mutex_wait);
+ exC.insert(e_prime);
+ }
+
+ // for each event e in C
+ for (const auto e : C) {
+ // Check for any unlocks
+ if (const auto* e_mutex = dynamic_cast<const MutexTransition*>(e->get_transition());
+ e_mutex != nullptr && e_mutex->type_ == Transition::Type::MUTEX_UNLOCK) {
+ // TODO: Check if dependent or not
+ // This entails getting information about
+ // the relative position of the mutex in the queue, which
+ // again means we need more context...
+ auto K = EventSet({e, pre_event_a_C.value_or(e)});
+ exC.insert(U->discover_event(std::move(K), mutex_wait));
+ }
+ }
+ return exC;
+}
+
+EventSet ExtensionSetCalculator::partially_extend_MutexTest(const Configuration& C, Unfolding* U,
+ std::shared_ptr<Transition> action)
+{
+ EventSet exC;
+ const auto mutex_test = std::static_pointer_cast<MutexTransition>(action);
+ const auto pre_event_a_C = C.pre_event(mutex_test->aid_);
+
+ // for each event e in C
+ // 1. If lambda(e) := pre(a) -> add it. Note that if
+ // pre_event_a_C.has_value() == false, this implies `C` is
+ // empty or which we treat as implicitly containing the bottom event
+ if (pre_event_a_C.has_value()) {
+ const auto e_prime = U->discover_event(EventSet({pre_event_a_C.value()}), mutex_test);
+ exC.insert(e_prime);
+ } else {
+ const auto e_prime = U->discover_event(EventSet(), mutex_test);
+ exC.insert(e_prime);
+ }
+
+ // for each event e in C
+ for (const auto e : C) {
+ // Check for any unlocks
+ if (const auto* e_mutex = dynamic_cast<const MutexTransition*>(e->get_transition());
+ e_mutex != nullptr && e_mutex->type_ == Transition::Type::MUTEX_UNLOCK) {
+ // TODO: Check if dependent or not
+ // This entails getting information about
+ // the relative position of the mutex in the queue, which
+ // again means we need more context...
+ auto K = EventSet({e, pre_event_a_C.value_or(e)});
+ exC.insert(U->discover_event(std::move(K), mutex_test));
+ }
+ }
+ return exC;
+}
+
+EventSet ExtensionSetCalculator::partially_extend_ActorJoin(const Configuration& C, Unfolding* U,
+ std::shared_ptr<Transition> action)
+{
+ EventSet exC;
+
+ const auto join_action = std::static_pointer_cast<ActorJoinTransition>(action);
+
+ // Handling ActorJoin is very simple: it is independent with all
+ // other transitions. Thus the only event it could possibly depend
+ // on is pre(a, C) or the root
+ if (const auto pre_event_a_C = C.pre_event(join_action->aid_); pre_event_a_C.has_value()) {
+ const auto e_prime = U->discover_event(EventSet({pre_event_a_C.value()}), join_action);
+ exC.insert(e_prime);
+ } else {
+ const auto e_prime = U->discover_event(EventSet(), join_action);
+ exC.insert(e_prime);
+ }
+
+ return exC;
}
-} // namespace simgrid::mc::udpor
\ No newline at end of file
+} // namespace simgrid::mc::udpor
