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 "src/kernel/activity/CommImpl.hpp"
7 #include "simgrid/Exception.hpp"
8 #include "simgrid/kernel/resource/Action.hpp"
9 #include "simgrid/kernel/routing/NetPoint.hpp"
10 #include "simgrid/modelchecker.h"
11 #include "simgrid/s4u/Host.hpp"
12 #include "src/kernel/activity/MailboxImpl.hpp"
13 #include "src/kernel/context/Context.hpp"
14 #include "src/mc/mc_replay.hpp"
15 #include "src/surf/cpu_interface.hpp"
16 #include "src/surf/network_interface.hpp"
17 #include "src/surf/surf_interface.hpp"
19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_network, simix, "SIMIX network-related synchronization");
21 XBT_PRIVATE void simcall_HANDLER_comm_send(smx_simcall_t simcall, smx_actor_t src, smx_mailbox_t mbox, double task_size,
22 double rate, unsigned char* src_buff, size_t src_buff_size,
23 bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
24 void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t),
25 void* data, double timeout)
27 simgrid::kernel::activity::ActivityImplPtr comm = simcall_HANDLER_comm_isend(
28 simcall, src, mbox, task_size, rate, src_buff, src_buff_size, match_fun, nullptr, copy_data_fun, data, false);
29 simcall->mc_value_ = 0;
30 simcall_HANDLER_comm_wait(simcall, static_cast<simgrid::kernel::activity::CommImpl*>(comm.get()), timeout);
33 XBT_PRIVATE simgrid::kernel::activity::ActivityImplPtr simcall_HANDLER_comm_isend(
34 smx_simcall_t /*simcall*/, smx_actor_t src_proc, smx_mailbox_t mbox, double task_size, double rate,
35 unsigned char* src_buff, size_t src_buff_size,
36 bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
37 void (*clean_fun)(void*), // used to free the synchro in case of problem after a detached send
38 void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t), // used to copy data if not default one
39 void* data, bool detached)
41 XBT_DEBUG("send from mailbox %p", mbox);
43 /* Prepare a synchro describing us, so that it gets passed to the user-provided filter of other side */
44 simgrid::kernel::activity::CommImplPtr this_comm(
45 new simgrid::kernel::activity::CommImpl(simgrid::kernel::activity::CommImpl::Type::SEND));
47 /* Look for communication synchro matching our needs. We also provide a description of
48 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
50 * If it is not found then push our communication into the rendez-vous point */
51 simgrid::kernel::activity::CommImplPtr other_comm =
52 mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::RECEIVE, match_fun, data, this_comm,
53 /*done*/ false, /*remove_matching*/ true);
56 other_comm = std::move(this_comm);
58 if (mbox->permanent_receiver_ != nullptr) {
59 // this mailbox is for small messages, which have to be sent right now
60 other_comm->state_ = simgrid::kernel::activity::State::READY;
61 other_comm->dst_actor_ = mbox->permanent_receiver_.get();
62 mbox->done_comm_queue_.push_back(other_comm);
63 XBT_DEBUG("pushing a message into the permanent receive list %p, comm %p", mbox, other_comm.get());
66 mbox->push(other_comm);
69 XBT_DEBUG("Receive already pushed");
71 other_comm->state_ = simgrid::kernel::activity::State::READY;
76 other_comm->clean_fun = clean_fun;
78 other_comm->clean_fun = nullptr;
79 src_proc->activities_.emplace_back(other_comm);
82 /* Setup the communication synchro */
83 other_comm->src_actor_ = src_proc;
84 other_comm->src_data_ = data;
85 (*other_comm).set_src_buff(src_buff, src_buff_size).set_size(task_size).set_rate(rate);
87 other_comm->match_fun = match_fun;
88 other_comm->copy_data_fun = copy_data_fun;
90 if (MC_is_active() || MC_record_replay_is_active())
91 other_comm->state_ = simgrid::kernel::activity::State::RUNNING;
95 return (detached ? nullptr : other_comm);
98 XBT_PRIVATE void simcall_HANDLER_comm_recv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
99 unsigned char* dst_buff, size_t* dst_buff_size,
100 bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
101 void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t),
102 void* data, double timeout, double rate)
104 simgrid::kernel::activity::ActivityImplPtr comm = simcall_HANDLER_comm_irecv(
105 simcall, receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
106 simcall->mc_value_ = 0;
107 simcall_HANDLER_comm_wait(simcall, static_cast<simgrid::kernel::activity::CommImpl*>(comm.get()), timeout);
110 XBT_PRIVATE simgrid::kernel::activity::ActivityImplPtr
111 simcall_HANDLER_comm_irecv(smx_simcall_t /*simcall*/, smx_actor_t receiver, smx_mailbox_t mbox, unsigned char* dst_buff,
112 size_t* dst_buff_size, bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
113 void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t), void* data,
116 simgrid::kernel::activity::CommImplPtr this_synchro(
117 new simgrid::kernel::activity::CommImpl(simgrid::kernel::activity::CommImpl::Type::RECEIVE));
118 XBT_DEBUG("recv from mbox %p. this_synchro=%p", mbox, this_synchro.get());
120 simgrid::kernel::activity::CommImplPtr other_comm;
121 // communication already done, get it inside the list of completed comms
122 if (mbox->permanent_receiver_ != nullptr && not mbox->done_comm_queue_.empty()) {
123 XBT_DEBUG("We have a comm that has probably already been received, trying to match it, to skip the communication");
124 // find a match in the list of already received comms
125 other_comm = mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::SEND, match_fun, data,
126 this_synchro, /*done*/ true,
127 /*remove_matching*/ true);
128 // if not found, assume the receiver came first, register it to the mailbox in the classical way
129 if (not other_comm) {
130 XBT_DEBUG("We have messages in the permanent receive list, but not the one we are looking for, pushing request "
132 other_comm = std::move(this_synchro);
133 mbox->push(other_comm);
135 if (other_comm->surf_action_ && other_comm->get_remaining() < 1e-12) {
136 XBT_DEBUG("comm %p has been already sent, and is finished, destroy it", other_comm.get());
137 other_comm->state_ = simgrid::kernel::activity::State::DONE;
138 other_comm->set_mailbox(nullptr);
142 /* Prepare a comm describing us, so that it gets passed to the user-provided filter of other side */
144 /* Look for communication activity matching our needs. We also provide a description of
145 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
147 * If it is not found then push our communication into the rendez-vous point */
148 other_comm = mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::SEND, match_fun, data,
149 this_synchro, /*done*/ false,
150 /*remove_matching*/ true);
152 if (other_comm == nullptr) {
153 XBT_DEBUG("Receive pushed first (%zu comm enqueued so far)", mbox->comm_queue_.size());
154 other_comm = std::move(this_synchro);
155 mbox->push(other_comm);
157 XBT_DEBUG("Match my %p with the existing %p", this_synchro.get(), other_comm.get());
159 other_comm->state_ = simgrid::kernel::activity::State::READY;
161 receiver->activities_.emplace_back(other_comm);
164 /* Setup communication synchro */
165 other_comm->dst_actor_ = receiver;
166 other_comm->dst_data_ = data;
167 other_comm->set_dst_buff(dst_buff, dst_buff_size);
169 if (rate > -1.0 && (other_comm->get_rate() < 0.0 || rate < other_comm->get_rate()))
170 other_comm->set_rate(rate);
172 other_comm->match_fun = match_fun;
173 other_comm->copy_data_fun = copy_data_fun;
175 if (MC_is_active() || MC_record_replay_is_active()) {
176 other_comm->state_ = simgrid::kernel::activity::State::RUNNING;
183 void simcall_HANDLER_comm_wait(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comm, double timeout)
185 /* Associate this simcall to the wait synchro */
186 XBT_DEBUG("simcall_HANDLER_comm_wait, %p", comm);
188 comm->register_simcall(simcall);
190 if (MC_is_active() || MC_record_replay_is_active()) {
191 int idx = simcall->mc_value_;
193 comm->state_ = simgrid::kernel::activity::State::DONE;
195 /* If we reached this point, the wait simcall must have a timeout */
196 /* Otherwise it shouldn't be enabled and executed by the MC */
200 if (comm->src_actor_ == simcall->issuer_)
201 comm->state_ = simgrid::kernel::activity::State::SRC_TIMEOUT;
203 comm->state_ = simgrid::kernel::activity::State::DST_TIMEOUT;
210 /* If the synchro has already finish perform the error handling, */
211 /* otherwise set up a waiting timeout on the right side */
212 if (comm->state_ != simgrid::kernel::activity::State::WAITING &&
213 comm->state_ != simgrid::kernel::activity::State::RUNNING) {
215 } else { /* we need a sleep action (even when there is no timeout) to be notified of host failures */
216 simgrid::kernel::resource::Action* sleep = simcall->issuer_->get_host()->pimpl_cpu->sleep(timeout);
217 sleep->set_activity(comm);
219 if (simcall->issuer_ == comm->src_actor_)
220 comm->src_timeout_ = sleep;
222 comm->dst_timeout_ = sleep;
226 bool simcall_HANDLER_comm_test(smx_simcall_t, simgrid::kernel::activity::CommImpl* comm)
231 int simcall_HANDLER_comm_testany(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comms[], size_t count)
233 std::vector<simgrid::kernel::activity::CommImpl*> comms_vec(comms, comms + count);
234 return simgrid::kernel::activity::CommImpl::test_any(simcall->issuer_, comms_vec);
237 void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comms[], size_t count,
240 std::vector<simgrid::kernel::activity::CommImpl*> comms_vec(comms, comms + count);
241 simgrid::kernel::activity::CommImpl::wait_any_for(simcall->issuer_, comms_vec, timeout);
244 /******************************************************************************/
245 /* SIMIX_comm_copy_data callbacks */
246 /******************************************************************************/
247 void SIMIX_comm_set_copy_data_callback(void (*callback)(simgrid::kernel::activity::CommImpl*, void*, size_t))
249 simgrid::kernel::activity::CommImpl::set_copy_data_callback(callback);
252 void SIMIX_comm_copy_buffer_callback(simgrid::kernel::activity::CommImpl* comm, void* buff, size_t buff_size)
254 XBT_DEBUG("Copy the data over");
255 memcpy(comm->dst_buff_, buff, buff_size);
256 if (comm->detached()) { // if this is a detached send, the source buffer was duplicated by SMPI sender to make the
257 // original buffer available to the application ASAP
259 comm->src_buff_ = nullptr;
263 void SIMIX_comm_copy_pointer_callback(simgrid::kernel::activity::CommImpl* comm, void* buff, size_t buff_size)
265 xbt_assert((buff_size == sizeof(void*)), "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
266 *(void**)(comm->dst_buff_) = buff;
273 void (*CommImpl::copy_data_callback_)(CommImpl*, void*, size_t) = &SIMIX_comm_copy_pointer_callback;
275 void CommImpl::set_copy_data_callback(void (*callback)(CommImpl*, void*, size_t))
277 copy_data_callback_ = callback;
280 CommImpl& CommImpl::set_size(double size)
286 CommImpl& CommImpl::set_rate(double rate)
291 CommImpl& CommImpl::set_mailbox(MailboxImpl* mbox)
297 CommImpl& CommImpl::set_src_buff(unsigned char* buff, size_t size)
300 src_buff_size_ = size;
304 CommImpl& CommImpl::set_dst_buff(unsigned char* buff, size_t* size)
307 dst_buff_size_ = size;
311 CommImpl& CommImpl::detach()
317 CommImpl::CommImpl(s4u::Host* from, s4u::Host* to, double bytes) : size_(bytes), detached_(true), from_(from), to_(to)
319 state_ = State::READY;
322 CommImpl::~CommImpl()
324 XBT_DEBUG("Really free communication %p in state %s (detached = %d)", this, get_state_str(), detached_);
328 if (detached_ && state_ != State::DONE) {
329 /* the communication has failed and was detached:
330 * we have to free the buffer */
332 clean_fun(src_buff_);
339 /** @brief Starts the simulation of a communication synchro. */
340 CommImpl* CommImpl::start()
342 /* If both the sender and the receiver are already there, start the communication */
343 if (state_ == State::READY) {
344 from_ = from_ != nullptr ? from_ : src_actor_->get_host();
345 to_ = to_ != nullptr ? to_ : dst_actor_->get_host();
347 /* FIXME[donassolo]: getting the network_model from the origin host
348 * Soon we need to change this function to first get the routes and later
349 * create the respective surf actions */
350 auto net_model = from_->get_netpoint()->get_englobing_zone()->get_network_model();
352 surf_action_ = net_model->communicate(from_, to_, size_, rate_);
353 surf_action_->set_activity(this);
354 surf_action_->set_category(get_tracing_category());
355 state_ = State::RUNNING;
357 XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p; state: %s)", this, from_->get_cname(),
358 to_->get_cname(), surf_action_, get_state_str());
360 /* If a link is failed, detect it immediately */
361 if (surf_action_->get_state() == resource::Action::State::FAILED) {
362 XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", from_->get_cname(),
364 state_ = State::LINK_FAILURE;
367 } else if ((src_actor_ != nullptr && src_actor_->is_suspended()) ||
368 (dst_actor_ != nullptr && dst_actor_->is_suspended())) {
369 /* If any of the process is suspended, create the synchro but stop its execution,
370 it will be restarted when the sender process resume */
371 if (src_actor_->is_suspended())
372 XBT_DEBUG("The communication is suspended on startup because src (%s@%s) was suspended since it initiated the "
374 src_actor_->get_cname(), src_actor_->get_host()->get_cname());
376 XBT_DEBUG("The communication is suspended on startup because dst (%s@%s) was suspended since it initiated the "
378 dst_actor_->get_cname(), dst_actor_->get_host()->get_cname());
380 surf_action_->suspend();
387 /** @brief Copy the communication data from the sender's buffer to the receiver's one */
388 void CommImpl::copy_data()
390 size_t buff_size = src_buff_size_;
391 /* If there is no data to copy then return */
392 if (not src_buff_ || not dst_buff_ || copied_)
395 XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", this,
396 src_actor_ ? src_actor_->get_host()->get_cname() : "a finished process", src_buff_,
397 dst_actor_ ? dst_actor_->get_host()->get_cname() : "a finished process", dst_buff_, buff_size);
399 /* Copy at most dst_buff_size bytes of the message to receiver's buffer */
400 if (dst_buff_size_) {
401 buff_size = std::min(buff_size, *dst_buff_size_);
403 /* Update the receiver's buffer size to the copied amount */
404 *dst_buff_size_ = buff_size;
409 copy_data_fun(this, src_buff_, buff_size);
411 copy_data_callback_(this, src_buff_, buff_size);
414 /* Set the copied flag so we copy data only once */
415 /* (this function might be called from both communication ends) */
419 bool CommImpl::test()
421 if ((MC_is_active() || MC_record_replay_is_active()) && src_actor_ && dst_actor_)
422 state_ = State::DONE;
423 return ActivityImpl::test();
426 int CommImpl::test_any(actor::ActorImpl* issuer, const std::vector<CommImpl*>& comms)
428 if (MC_is_active() || MC_record_replay_is_active()) {
429 int idx = issuer->simcall_.mc_value_;
430 xbt_assert(idx == -1 || comms[idx]->test());
434 for (std::size_t i = 0; i < comms.size(); ++i) {
435 if (comms[i]->test())
441 void CommImpl::wait_any_for(actor::ActorImpl* issuer, const std::vector<CommImpl*>& comms, double timeout)
443 if (MC_is_active() || MC_record_replay_is_active()) {
444 xbt_assert(timeout <= 0.0, "Timeout not implemented for waitany in the model-checker");
445 int idx = issuer->simcall_.mc_value_;
446 auto* comm = comms[idx];
447 comm->simcalls_.push_back(&issuer->simcall_);
448 simcall_comm_waitany__set__result(&issuer->simcall_, idx);
449 comm->state_ = State::DONE;
455 issuer->simcall_.timeout_cb_ = nullptr;
457 issuer->simcall_.timeout_cb_ = simix::Timer::set(SIMIX_get_clock() + timeout, [issuer, comms]() {
458 // FIXME: Vector `comms' is copied here. Use a reference once its lifetime is extended (i.e. when the simcall is
460 issuer->simcall_.timeout_cb_ = nullptr;
461 for (auto* comm : comms)
462 comm->unregister_simcall(&issuer->simcall_);
463 simcall_comm_waitany__set__result(&issuer->simcall_, -1);
464 issuer->simcall_answer();
468 for (auto* comm : comms) {
469 /* associate this simcall to the the synchro */
470 comm->simcalls_.push_back(&issuer->simcall_);
472 /* see if the synchro is already finished */
473 if (comm->state_ != State::WAITING && comm->state_ != State::RUNNING) {
480 void CommImpl::suspend()
482 /* FIXME: shall we suspend also the timeout synchro? */
484 surf_action_->suspend();
485 /* if not created yet, the action will be suspended on creation, in CommImpl::start() */
488 void CommImpl::resume()
490 /*FIXME: check what happen with the timeouts */
492 surf_action_->resume();
493 /* in the other case, the synchro were not really suspended yet, see CommImpl::suspend() and CommImpl::start() */
496 void CommImpl::cancel()
498 /* if the synchro is a waiting state means that it is still in a mbox so remove from it and delete it */
499 if (state_ == State::WAITING) {
502 state_ = State::CANCELED;
504 } else if (not MC_is_active() /* when running the MC there are no surf actions */
505 && not MC_record_replay_is_active() && (state_ == State::READY || state_ == State::RUNNING)) {
506 surf_action_->cancel();
510 /** @brief This is part of the cleanup process, probably an internal command */
511 void CommImpl::cleanup_surf()
516 src_timeout_->unref();
517 src_timeout_ = nullptr;
521 dst_timeout_->unref();
522 dst_timeout_ = nullptr;
526 void CommImpl::post()
528 /* Update synchro state */
529 if (src_timeout_ && src_timeout_->get_state() == resource::Action::State::FINISHED)
530 state_ = State::SRC_TIMEOUT;
531 else if (dst_timeout_ && dst_timeout_->get_state() == resource::Action::State::FINISHED)
532 state_ = State::DST_TIMEOUT;
533 else if (src_timeout_ && src_timeout_->get_state() == resource::Action::State::FAILED)
534 state_ = State::SRC_HOST_FAILURE;
535 else if (dst_timeout_ && dst_timeout_->get_state() == resource::Action::State::FAILED)
536 state_ = State::DST_HOST_FAILURE;
537 else if (surf_action_ && surf_action_->get_state() == resource::Action::State::FAILED) {
538 state_ = State::LINK_FAILURE;
540 state_ = State::DONE;
542 XBT_DEBUG("CommImpl::post(): comm %p, state %s, src_proc %p, dst_proc %p, detached: %d", this, get_state_str(),
543 src_actor_.get(), dst_actor_.get(), detached_);
545 /* destroy the surf actions associated with the Simix communication */
548 /* Answer all simcalls associated with the synchro */
552 void CommImpl::finish()
554 XBT_DEBUG("CommImpl::finish() in state %s", to_c_str(state_));
556 /* If the synchro is still in a rendez-vous point then remove from it */
560 if (state_ == State::DONE)
563 while (not simcalls_.empty()) {
564 smx_simcall_t simcall = simcalls_.front();
565 simcalls_.pop_front();
567 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
568 * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
571 if (simcall->call_ == simix::Simcall::NONE) // FIXME: maybe a better way to handle this case
572 continue; // if actor handling comm is killed
573 if (simcall->call_ == simix::Simcall::COMM_WAITANY) {
574 CommImpl** comms = simcall_comm_waitany__get__comms(simcall);
575 size_t count = simcall_comm_waitany__get__count(simcall);
576 for (size_t i = 0; i < count; i++)
577 comms[i]->unregister_simcall(simcall);
578 if (simcall->timeout_cb_) {
579 simcall->timeout_cb_->remove();
580 simcall->timeout_cb_ = nullptr;
582 if (not MC_is_active() && not MC_record_replay_is_active()) {
583 CommImpl** comms = simcall_comm_waitany__get__comms(simcall);
584 size_t count = simcall_comm_waitany__get__count(simcall);
585 CommImpl** element = std::find(comms, comms + count, this);
586 int rank = (element != comms + count) ? element - comms : -1;
587 simcall_comm_waitany__set__result(simcall, rank);
591 /* Check out for errors */
593 if (not simcall->issuer_->get_host()->is_on()) {
594 simcall->issuer_->context_->set_wannadie();
597 case State::SRC_TIMEOUT:
598 simcall->issuer_->exception_ = std::make_exception_ptr(
599 TimeoutException(XBT_THROW_POINT, "Communication timeouted because of the sender"));
602 case State::DST_TIMEOUT:
603 simcall->issuer_->exception_ = std::make_exception_ptr(
604 TimeoutException(XBT_THROW_POINT, "Communication timeouted because of the receiver"));
607 case State::SRC_HOST_FAILURE:
608 if (simcall->issuer_ == src_actor_)
609 simcall->issuer_->context_->set_wannadie();
611 simcall->issuer_->exception_ =
612 std::make_exception_ptr(NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
615 case State::DST_HOST_FAILURE:
616 if (simcall->issuer_ == dst_actor_)
617 simcall->issuer_->context_->set_wannadie();
619 simcall->issuer_->exception_ =
620 std::make_exception_ptr(NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
623 case State::LINK_FAILURE:
624 XBT_DEBUG("Link failure in synchro %p between '%s' and '%s': posting an exception to the issuer: %s (%p) "
626 this, src_actor_ ? src_actor_->get_host()->get_cname() : nullptr,
627 dst_actor_ ? dst_actor_->get_host()->get_cname() : nullptr, simcall->issuer_->get_cname(),
628 simcall->issuer_, detached_);
629 if (src_actor_ == simcall->issuer_) {
630 XBT_DEBUG("I'm source");
631 } else if (dst_actor_ == simcall->issuer_) {
632 XBT_DEBUG("I'm dest");
634 XBT_DEBUG("I'm neither source nor dest");
636 simcall->issuer_->throw_exception(
637 std::make_exception_ptr(NetworkFailureException(XBT_THROW_POINT, "Link failure")));
640 case State::CANCELED:
641 if (simcall->issuer_ == dst_actor_)
642 simcall->issuer_->exception_ =
643 std::make_exception_ptr(CancelException(XBT_THROW_POINT, "Communication canceled by the sender"));
645 simcall->issuer_->exception_ =
646 std::make_exception_ptr(CancelException(XBT_THROW_POINT, "Communication canceled by the receiver"));
650 xbt_assert(state_ == State::DONE, "Internal error in CommImpl::finish(): unexpected synchro state %s",
653 simcall->issuer_->simcall_answer();
655 /* if there is an exception during a waitany or a testany, indicate the position of the failed communication */
656 if (simcall->issuer_->exception_ &&
657 (simcall->call_ == simix::Simcall::COMM_WAITANY || simcall->call_ == simix::Simcall::COMM_TESTANY)) {
658 // First retrieve the rank of our failing synchro
661 if (simcall->call_ == simix::Simcall::COMM_WAITANY) {
662 comms = simcall_comm_waitany__get__comms(simcall);
663 count = simcall_comm_waitany__get__count(simcall);
665 /* simcall->call_ == simix::Simcall::COMM_TESTANY */
666 comms = simcall_comm_testany__get__comms(simcall);
667 count = simcall_comm_testany__get__count(simcall);
669 CommImpl** element = std::find(comms, comms + count, this);
670 int rank = (element != comms + count) ? element - comms : -1;
671 // In order to modify the exception we have to rethrow it:
673 std::rethrow_exception(simcall->issuer_->exception_);
674 } catch (Exception& e) {
679 simcall->issuer_->waiting_synchro_ = nullptr;
680 simcall->issuer_->activities_.remove(this);
682 if (simcall->issuer_ != dst_actor_ && dst_actor_ != nullptr)
683 dst_actor_->activities_.remove(this);
684 if (simcall->issuer_ != src_actor_ && src_actor_ != nullptr)
685 src_actor_->activities_.remove(this);
690 } // namespace activity
691 } // namespace kernel
692 } // namespace simgrid