1 /* Copyright (c) 2007-2021. 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 <simgrid/Exception.hpp>
7 #include <simgrid/kernel/routing/NetPoint.hpp>
8 #include <simgrid/modelchecker.h>
9 #include <simgrid/s4u/Host.hpp>
11 #include "src/kernel/activity/CommImpl.hpp"
12 #include "src/kernel/activity/MailboxImpl.hpp"
13 #include "src/kernel/context/Context.hpp"
14 #include "src/kernel/resource/CpuImpl.hpp"
15 #include "src/mc/mc_replay.hpp"
16 #include "src/surf/network_interface.hpp"
18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_network, simix, "SIMIX network-related synchronization");
20 XBT_PRIVATE void simcall_HANDLER_comm_send(smx_simcall_t simcall, smx_actor_t src, smx_mailbox_t mbox, double task_size,
21 double rate, unsigned char* src_buff, size_t src_buff_size,
22 bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
23 void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t),
24 void* data, double timeout)
26 simgrid::kernel::activity::ActivityImplPtr comm = simcall_HANDLER_comm_isend(
27 simcall, src, mbox, task_size, rate, src_buff, src_buff_size, match_fun, nullptr, copy_data_fun, data, false);
28 simcall->mc_value_ = 0;
29 comm->wait_for(simcall->issuer_, timeout);
32 XBT_PRIVATE simgrid::kernel::activity::ActivityImplPtr simcall_HANDLER_comm_isend(
33 smx_simcall_t /*simcall*/, smx_actor_t src_proc, smx_mailbox_t mbox, double task_size, double rate,
34 unsigned char* src_buff, size_t src_buff_size,
35 bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
36 void (*clean_fun)(void*), // used to free the synchro in case of problem after a detached send
37 void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t), // used to copy data if not default one
38 void* data, bool detached)
40 XBT_DEBUG("send from mailbox %p", mbox);
42 /* Prepare a synchro describing us, so that it gets passed to the user-provided filter of other side */
43 simgrid::kernel::activity::CommImplPtr this_comm(
44 new simgrid::kernel::activity::CommImpl(simgrid::kernel::activity::CommImpl::Type::SEND));
46 /* Look for communication synchro matching our needs. We also provide a description of
47 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
49 * If it is not found then push our communication into the rendez-vous point */
50 simgrid::kernel::activity::CommImplPtr other_comm =
51 mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::RECEIVE, match_fun, data, this_comm,
52 /*done*/ false, /*remove_matching*/ true);
55 other_comm = std::move(this_comm);
57 if (mbox->is_permanent()) {
58 // this mailbox is for small messages, which have to be sent right now
59 other_comm->state_ = simgrid::kernel::activity::State::READY;
60 other_comm->dst_actor_ = mbox->get_permanent_receiver().get();
61 mbox->push_done(other_comm);
62 XBT_DEBUG("pushing a message into the permanent receive list %p, comm %p", mbox, other_comm.get());
65 mbox->push(other_comm);
68 XBT_DEBUG("Receive already pushed");
70 other_comm->state_ = simgrid::kernel::activity::State::READY;
75 other_comm->clean_fun = clean_fun;
77 other_comm->clean_fun = nullptr;
78 src_proc->activities_.emplace_back(other_comm);
81 /* Setup the communication synchro */
82 other_comm->src_actor_ = src_proc;
83 other_comm->src_data_ = data;
84 (*other_comm).set_src_buff(src_buff, src_buff_size).set_size(task_size).set_rate(rate);
86 other_comm->match_fun = match_fun;
87 other_comm->copy_data_fun = copy_data_fun;
89 if (MC_is_active() || MC_record_replay_is_active())
90 other_comm->state_ = simgrid::kernel::activity::State::RUNNING;
94 return (detached ? nullptr : other_comm);
97 XBT_PRIVATE void simcall_HANDLER_comm_recv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
98 unsigned char* dst_buff, size_t* dst_buff_size,
99 bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
100 void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t),
101 void* data, double timeout, double rate)
103 simgrid::kernel::activity::ActivityImplPtr comm = simcall_HANDLER_comm_irecv(
104 simcall, receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
105 simcall->mc_value_ = 0;
106 comm->wait_for(simcall->issuer_, timeout);
109 XBT_PRIVATE simgrid::kernel::activity::ActivityImplPtr
110 simcall_HANDLER_comm_irecv(smx_simcall_t /*simcall*/, smx_actor_t receiver, smx_mailbox_t mbox, unsigned char* dst_buff,
111 size_t* dst_buff_size, bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
112 void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t), void* data,
115 simgrid::kernel::activity::CommImplPtr this_synchro(
116 new simgrid::kernel::activity::CommImpl(simgrid::kernel::activity::CommImpl::Type::RECEIVE));
117 XBT_DEBUG("recv from mbox %p. this_synchro=%p", mbox, this_synchro.get());
119 simgrid::kernel::activity::CommImplPtr other_comm;
120 // communication already done, get it inside the list of completed comms
121 if (mbox->is_permanent() && mbox->has_some_done_comm()) {
122 XBT_DEBUG("We have a comm that has probably already been received, trying to match it, to skip the communication");
123 // find a match in the list of already received comms
124 other_comm = mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::SEND, match_fun, data,
125 this_synchro, /*done*/ true,
126 /*remove_matching*/ true);
127 // if not found, assume the receiver came first, register it to the mailbox in the classical way
128 if (not other_comm) {
129 XBT_DEBUG("We have messages in the permanent receive list, but not the one we are looking for, pushing request "
131 other_comm = std::move(this_synchro);
132 mbox->push(other_comm);
134 if (other_comm->surf_action_ && other_comm->get_remaining() < 1e-12) {
135 XBT_DEBUG("comm %p has been already sent, and is finished, destroy it", other_comm.get());
136 other_comm->state_ = simgrid::kernel::activity::State::DONE;
137 other_comm->set_mailbox(nullptr);
141 /* Prepare a comm describing us, so that it gets passed to the user-provided filter of other side */
143 /* Look for communication activity matching our needs. We also provide a description of
144 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
146 * If it is not found then push our communication into the rendez-vous point */
147 other_comm = mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::SEND, match_fun, data,
148 this_synchro, /*done*/ false,
149 /*remove_matching*/ true);
151 if (other_comm == nullptr) {
152 XBT_DEBUG("Receive pushed first (%zu comm enqueued so far)", mbox->size());
153 other_comm = std::move(this_synchro);
154 mbox->push(other_comm);
156 XBT_DEBUG("Match my %p with the existing %p", this_synchro.get(), other_comm.get());
158 other_comm->state_ = simgrid::kernel::activity::State::READY;
160 receiver->activities_.emplace_back(other_comm);
163 /* Setup communication synchro */
164 other_comm->dst_actor_ = receiver;
165 other_comm->dst_data_ = data;
166 other_comm->set_dst_buff(dst_buff, dst_buff_size);
168 if (rate > -1.0 && (other_comm->get_rate() < 0.0 || rate < other_comm->get_rate()))
169 other_comm->set_rate(rate);
171 other_comm->match_fun = match_fun;
172 other_comm->copy_data_fun = copy_data_fun;
174 if (MC_is_active() || MC_record_replay_is_active()) {
175 other_comm->state_ = simgrid::kernel::activity::State::RUNNING;
182 void simcall_HANDLER_comm_wait(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comm, double timeout)
184 comm->wait_for(simcall->issuer_, timeout);
187 bool simcall_HANDLER_comm_test(smx_simcall_t, simgrid::kernel::activity::CommImpl* comm)
192 ssize_t simcall_HANDLER_comm_testany(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comms[], size_t count)
194 std::vector<simgrid::kernel::activity::CommImpl*> comms_vec(comms, comms + count);
195 return simgrid::kernel::activity::CommImpl::test_any(simcall->issuer_, comms_vec);
198 void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comms[], size_t count,
201 std::vector<simgrid::kernel::activity::CommImpl*> comms_vec(comms, comms + count);
202 simgrid::kernel::activity::CommImpl::wait_any_for(simcall->issuer_, comms_vec, timeout);
205 /******************************************************************************/
206 /* SIMIX_comm_copy_data callbacks */
207 /******************************************************************************/
208 // XBT_ATTRIB_DEPRECATED_v333
209 void SIMIX_comm_set_copy_data_callback(void (*callback)(simgrid::kernel::activity::CommImpl*, void*, size_t))
211 simgrid::kernel::activity::CommImpl::set_copy_data_callback(callback);
214 // XBT_ATTRIB_DEPRECATED_v333
215 void SIMIX_comm_copy_buffer_callback(simgrid::kernel::activity::CommImpl* comm, void* buff, size_t buff_size)
217 simgrid::s4u::Comm::copy_buffer_callback(comm, buff, buff_size);
220 // XBT_ATTRIB_DEPRECATED_v333
221 void SIMIX_comm_copy_pointer_callback(simgrid::kernel::activity::CommImpl* comm, void* buff, size_t buff_size)
223 simgrid::s4u::Comm::copy_pointer_callback(comm, buff, buff_size);
229 xbt::signal<void(CommImpl const&)> CommImpl::on_start;
230 xbt::signal<void(CommImpl const&)> CommImpl::on_completion;
232 void (*CommImpl::copy_data_callback_)(CommImpl*, void*, size_t) = &s4u::Comm::copy_pointer_callback;
234 void CommImpl::set_copy_data_callback(void (*callback)(CommImpl*, void*, size_t))
236 copy_data_callback_ = callback;
239 CommImpl& CommImpl::set_size(double size)
245 CommImpl& CommImpl::set_rate(double rate)
250 CommImpl& CommImpl::set_mailbox(MailboxImpl* mbox)
256 CommImpl& CommImpl::set_src_buff(unsigned char* buff, size_t size)
259 src_buff_size_ = size;
263 CommImpl& CommImpl::set_dst_buff(unsigned char* buff, size_t* size)
266 dst_buff_size_ = size;
270 CommImpl& CommImpl::detach()
276 CommImpl::CommImpl(s4u::Host* from, s4u::Host* to, double bytes) : size_(bytes), detached_(true), from_(from), to_(to)
278 state_ = State::READY;
281 CommImpl::~CommImpl()
283 XBT_DEBUG("Really free communication %p in state %s (detached = %d)", this, get_state_str(), detached_);
287 if (detached_ && state_ != State::DONE) {
288 /* the communication has failed and was detached:
289 * we have to free the buffer */
291 clean_fun(src_buff_);
298 /** @brief Starts the simulation of a communication synchro. */
299 CommImpl* CommImpl::start()
301 /* If both the sender and the receiver are already there, start the communication */
302 if (state_ == State::READY) {
303 from_ = from_ != nullptr ? from_ : src_actor_->get_host();
304 to_ = to_ != nullptr ? to_ : dst_actor_->get_host();
305 /* Getting the network_model from the origin host
306 * Valid while we have a single network model, otherwise we would need to change this function to first get the
307 * routes and later create the respective surf actions */
308 auto net_model = from_->get_netpoint()->get_englobing_zone()->get_network_model();
310 surf_action_ = net_model->communicate(from_, to_, size_, rate_);
311 surf_action_->set_activity(this);
312 surf_action_->set_category(get_tracing_category());
313 state_ = State::RUNNING;
316 XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p; state: %s)", this, from_->get_cname(),
317 to_->get_cname(), surf_action_, get_state_str());
319 /* If a link is failed, detect it immediately */
320 if (surf_action_->get_state() == resource::Action::State::FAILED) {
321 XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", from_->get_cname(),
323 state_ = State::LINK_FAILURE;
326 } else if ((src_actor_ != nullptr && src_actor_->is_suspended()) ||
327 (dst_actor_ != nullptr && dst_actor_->is_suspended())) {
328 /* If any of the actor is suspended, create the synchro but stop its execution,
329 it will be restarted when the sender actor resume */
330 if (src_actor_->is_suspended())
331 XBT_DEBUG("The communication is suspended on startup because src (%s@%s) was suspended since it initiated the "
333 src_actor_->get_cname(), src_actor_->get_host()->get_cname());
335 XBT_DEBUG("The communication is suspended on startup because dst (%s@%s) was suspended since it initiated the "
337 dst_actor_->get_cname(), dst_actor_->get_host()->get_cname());
339 surf_action_->suspend();
346 std::vector<s4u::Link*> CommImpl::get_traversed_links() const
348 xbt_assert(state_ != State::WAITING, "You cannot use %s() if your communication is not ready (%s)", __FUNCTION__,
350 std::vector<s4u::Link*> vlinks;
351 XBT_ATTRIB_UNUSED double res = 0;
352 from_->route_to(to_, vlinks, &res);
356 /** @brief Copy the communication data from the sender's buffer to the receiver's one */
357 void CommImpl::copy_data()
359 size_t buff_size = src_buff_size_;
360 /* If there is no data to copy then return */
361 if (not src_buff_ || not dst_buff_ || copied_)
364 XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", this,
365 src_actor_ ? src_actor_->get_host()->get_cname() : "a finished actor", src_buff_,
366 dst_actor_ ? dst_actor_->get_host()->get_cname() : "a finished actor", dst_buff_, buff_size);
368 /* Copy at most dst_buff_size bytes of the message to receiver's buffer */
369 if (dst_buff_size_) {
370 buff_size = std::min(buff_size, *dst_buff_size_);
372 /* Update the receiver's buffer size to the copied amount */
373 *dst_buff_size_ = buff_size;
378 copy_data_fun(this, src_buff_, buff_size);
380 copy_data_callback_(this, src_buff_, buff_size);
383 /* Set the copied flag so we copy data only once */
384 /* (this function might be called from both communication ends) */
388 bool CommImpl::test()
390 if ((MC_is_active() || MC_record_replay_is_active()) && src_actor_ && dst_actor_)
391 state_ = State::DONE;
392 return ActivityImpl::test();
395 void CommImpl::wait_for(actor::ActorImpl* issuer, double timeout)
397 XBT_DEBUG("CommImpl::wait_for(%g), %p, state %s", timeout, this, to_c_str(state_));
399 /* Associate this simcall to the wait synchro */
400 register_simcall(&issuer->simcall_);
402 if (MC_is_active() || MC_record_replay_is_active()) {
403 int idx = issuer->simcall_.mc_value_;
405 state_ = State::DONE;
407 /* If we reached this point, the wait simcall must have a timeout */
408 /* Otherwise it shouldn't be enabled and executed by the MC */
411 state_ = (issuer == src_actor_ ? State::SRC_TIMEOUT : State::DST_TIMEOUT);
417 /* If the synchro has already finish perform the error handling, */
418 /* otherwise set up a waiting timeout on the right side */
419 if (state_ != State::WAITING && state_ != State::RUNNING) {
421 } else { /* we need a sleep action (even when there is no timeout) to be notified of host failures */
422 resource::Action* sleep = issuer->get_host()->get_cpu()->sleep(timeout);
423 sleep->set_activity(this);
425 if (issuer == src_actor_)
426 src_timeout_ = sleep;
428 dst_timeout_ = sleep;
432 ssize_t CommImpl::test_any(const actor::ActorImpl* issuer, const std::vector<CommImpl*>& comms)
434 if (MC_is_active() || MC_record_replay_is_active()) {
435 int idx = issuer->simcall_.mc_value_;
436 xbt_assert(idx == -1 || comms[idx]->test());
440 for (std::size_t i = 0; i < comms.size(); ++i) {
441 if (comms[i]->test())
447 void CommImpl::wait_any_for(actor::ActorImpl* issuer, const std::vector<CommImpl*>& comms, double timeout)
449 if (MC_is_active() || MC_record_replay_is_active()) {
450 xbt_assert(timeout <= 0.0, "Timeout not implemented for waitany in the model-checker");
451 int idx = issuer->simcall_.mc_value_;
452 auto* comm = comms[idx];
453 comm->simcalls_.push_back(&issuer->simcall_);
454 simcall_comm_waitany__set__result(&issuer->simcall_, idx);
455 comm->state_ = State::DONE;
461 issuer->simcall_.timeout_cb_ = nullptr;
463 issuer->simcall_.timeout_cb_ = timer::Timer::set(s4u::Engine::get_clock() + timeout, [issuer, comms]() {
464 // FIXME: Vector `comms' is copied here. Use a reference once its lifetime is extended (i.e. when the simcall is
466 issuer->simcall_.timeout_cb_ = nullptr;
467 for (auto* comm : comms)
468 comm->unregister_simcall(&issuer->simcall_);
469 simcall_comm_waitany__set__result(&issuer->simcall_, -1);
470 issuer->simcall_answer();
474 for (auto* comm : comms) {
475 /* associate this simcall to the the synchro */
476 comm->simcalls_.push_back(&issuer->simcall_);
478 /* see if the synchro is already finished */
479 if (comm->state_ != State::WAITING && comm->state_ != State::RUNNING) {
486 void CommImpl::suspend()
488 /* FIXME: shall we suspend also the timeout synchro? */
490 surf_action_->suspend();
491 /* if not created yet, the action will be suspended on creation, in CommImpl::start() */
494 void CommImpl::resume()
496 /*FIXME: check what happen with the timeouts */
498 surf_action_->resume();
499 /* in the other case, the synchro were not really suspended yet, see CommImpl::suspend() and CommImpl::start() */
502 void CommImpl::cancel()
504 /* if the synchro is a waiting state means that it is still in a mbox so remove from it and delete it */
505 if (state_ == State::WAITING) {
508 state_ = State::CANCELED;
510 } else if (not MC_is_active() /* when running the MC there are no surf actions */
511 && not MC_record_replay_is_active() && (state_ == State::READY || state_ == State::RUNNING)) {
512 surf_action_->cancel();
516 /** @brief This is part of the cleanup process, probably an internal command */
517 void CommImpl::cleanup_surf()
522 src_timeout_->unref();
523 src_timeout_ = nullptr;
527 dst_timeout_->unref();
528 dst_timeout_ = nullptr;
532 void CommImpl::post()
534 on_completion(*this);
536 /* Update synchro state */
537 if (src_timeout_ && src_timeout_->get_state() == resource::Action::State::FINISHED)
538 state_ = State::SRC_TIMEOUT;
539 else if (dst_timeout_ && dst_timeout_->get_state() == resource::Action::State::FINISHED)
540 state_ = State::DST_TIMEOUT;
541 else if (src_timeout_ && src_timeout_->get_state() == resource::Action::State::FAILED)
542 state_ = State::SRC_HOST_FAILURE;
543 else if (dst_timeout_ && dst_timeout_->get_state() == resource::Action::State::FAILED)
544 state_ = State::DST_HOST_FAILURE;
545 else if (surf_action_ && surf_action_->get_state() == resource::Action::State::FAILED) {
546 state_ = State::LINK_FAILURE;
548 state_ = State::DONE;
550 XBT_DEBUG("CommImpl::post(): comm %p, state %s, src_proc %p, dst_proc %p, detached: %d", this, get_state_str(),
551 src_actor_.get(), dst_actor_.get(), detached_);
553 /* destroy the surf actions associated with the Simix communication */
556 /* Answer all simcalls associated with the synchro */
560 void CommImpl::finish()
562 XBT_DEBUG("CommImpl::finish() in state %s", to_c_str(state_));
563 /* If the synchro is still in a rendez-vous point then remove from it */
567 if (state_ == State::DONE)
570 while (not simcalls_.empty()) {
571 smx_simcall_t simcall = simcalls_.front();
572 simcalls_.pop_front();
574 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
575 * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
578 if (simcall->call_ == simix::Simcall::NONE) // FIXME: maybe a better way to handle this case
579 continue; // if actor handling comm is killed
580 if (simcall->call_ == simix::Simcall::COMM_WAITANY) {
581 CommImpl** comms = simcall_comm_waitany__get__comms(simcall);
582 size_t count = simcall_comm_waitany__get__count(simcall);
583 for (size_t i = 0; i < count; i++)
584 comms[i]->unregister_simcall(simcall);
585 if (simcall->timeout_cb_) {
586 simcall->timeout_cb_->remove();
587 simcall->timeout_cb_ = nullptr;
589 if (not MC_is_active() && not MC_record_replay_is_active()) {
590 auto element = std::find(comms, comms + count, this);
591 ssize_t rank = (element != comms + count) ? element - comms : -1;
592 simcall_comm_waitany__set__result(simcall, rank);
596 /* Check out for errors */
598 if (not simcall->issuer_->get_host()->is_on()) {
599 simcall->issuer_->context_->set_wannadie();
603 simcall->issuer_->exception_ =
604 std::make_exception_ptr(NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
606 case State::SRC_TIMEOUT:
607 simcall->issuer_->exception_ = std::make_exception_ptr(
608 TimeoutException(XBT_THROW_POINT, "Communication timeouted because of the sender"));
611 case State::DST_TIMEOUT:
612 simcall->issuer_->exception_ = std::make_exception_ptr(
613 TimeoutException(XBT_THROW_POINT, "Communication timeouted because of the receiver"));
616 case State::SRC_HOST_FAILURE:
617 if (simcall->issuer_ == src_actor_)
618 simcall->issuer_->context_->set_wannadie();
620 state_ = kernel::activity::State::FAILED;
621 simcall->issuer_->exception_ =
622 std::make_exception_ptr(NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
626 case State::DST_HOST_FAILURE:
627 if (simcall->issuer_ == dst_actor_)
628 simcall->issuer_->context_->set_wannadie();
630 state_ = kernel::activity::State::FAILED;
631 simcall->issuer_->exception_ =
632 std::make_exception_ptr(NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
636 case State::LINK_FAILURE:
637 XBT_DEBUG("Link failure in synchro %p between '%s' and '%s': posting an exception to the issuer: %s (%p) "
639 this, src_actor_ ? src_actor_->get_host()->get_cname() : nullptr,
640 dst_actor_ ? dst_actor_->get_host()->get_cname() : nullptr, simcall->issuer_->get_cname(),
641 simcall->issuer_, detached_);
642 if (src_actor_ == simcall->issuer_) {
643 XBT_DEBUG("I'm source");
644 } else if (dst_actor_ == simcall->issuer_) {
645 XBT_DEBUG("I'm dest");
647 XBT_DEBUG("I'm neither source nor dest");
649 state_ = kernel::activity::State::FAILED;
650 simcall->issuer_->throw_exception(
651 std::make_exception_ptr(NetworkFailureException(XBT_THROW_POINT, "Link failure")));
654 case State::CANCELED:
655 if (simcall->issuer_ == dst_actor_)
656 simcall->issuer_->exception_ =
657 std::make_exception_ptr(CancelException(XBT_THROW_POINT, "Communication canceled by the sender"));
659 simcall->issuer_->exception_ =
660 std::make_exception_ptr(CancelException(XBT_THROW_POINT, "Communication canceled by the receiver"));
664 xbt_assert(state_ == State::DONE, "Internal error in CommImpl::finish(): unexpected synchro state %s",
667 simcall->issuer_->simcall_answer();
669 /* if there is an exception during a waitany or a testany, indicate the position of the failed communication */
670 if (simcall->issuer_->exception_ &&
671 (simcall->call_ == simix::Simcall::COMM_WAITANY || simcall->call_ == simix::Simcall::COMM_TESTANY)) {
672 // First retrieve the rank of our failing synchro
675 if (simcall->call_ == simix::Simcall::COMM_WAITANY) {
676 comms = simcall_comm_waitany__get__comms(simcall);
677 count = simcall_comm_waitany__get__count(simcall);
679 /* simcall->call_ == simix::Simcall::COMM_TESTANY */
680 comms = simcall_comm_testany__get__comms(simcall);
681 count = simcall_comm_testany__get__count(simcall);
683 auto element = std::find(comms, comms + count, this);
684 ssize_t rank = (element != comms + count) ? element - comms : -1;
685 // In order to modify the exception we have to rethrow it:
687 std::rethrow_exception(simcall->issuer_->exception_);
688 } catch (Exception& e) {
693 simcall->issuer_->waiting_synchro_ = nullptr;
694 simcall->issuer_->activities_.remove(this);
696 if (simcall->issuer_ != dst_actor_ && dst_actor_ != nullptr)
697 dst_actor_->activities_.remove(this);
698 if (simcall->issuer_ != src_actor_ && src_actor_ != nullptr)
699 src_actor_->activities_.remove(this);
704 } // namespace activity
705 } // namespace kernel
706 } // namespace simgrid