1 /* Copyright (c) 2007-2020. 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/modelchecker.h"
10 #include "simgrid/s4u/Host.hpp"
11 #include "src/kernel/activity/MailboxImpl.hpp"
12 #include "src/kernel/context/Context.hpp"
13 #include "src/mc/mc_replay.hpp"
14 #include "src/surf/cpu_interface.hpp"
15 #include "src/surf/network_interface.hpp"
16 #include "src/surf/surf_interface.hpp"
18 #include <boost/range/algorithm.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, 0);
29 SIMCALL_SET_MC_VALUE(*simcall, 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 simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl());
46 this_comm->set_type(simgrid::kernel::activity::CommImpl::Type::SEND);
48 /* Look for communication synchro matching our needs. We also provide a description of
49 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
51 * If it is not found then push our communication into the rendez-vous point */
52 simgrid::kernel::activity::CommImplPtr other_comm =
53 mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::RECEIVE, match_fun, data, this_comm,
54 /*done*/ false, /*remove_matching*/ true);
57 other_comm = std::move(this_comm);
59 if (mbox->permanent_receiver_ != nullptr) {
60 // this mailbox is for small messages, which have to be sent right now
61 other_comm->state_ = simgrid::kernel::activity::State::READY;
62 other_comm->dst_actor_ = mbox->permanent_receiver_.get();
63 mbox->done_comm_queue_.push_back(other_comm);
64 XBT_DEBUG("pushing a message into the permanent receive list %p, comm %p", mbox, other_comm.get());
67 mbox->push(other_comm);
70 XBT_DEBUG("Receive already pushed");
72 other_comm->state_ = simgrid::kernel::activity::State::READY;
73 other_comm->set_type(simgrid::kernel::activity::CommImpl::Type::READY);
78 other_comm->clean_fun = clean_fun;
80 other_comm->clean_fun = nullptr;
81 src_proc->comms.push_back(other_comm);
84 /* Setup the communication synchro */
85 other_comm->src_actor_ = src_proc;
86 other_comm->src_data_ = data;
87 (*other_comm).set_src_buff(src_buff, src_buff_size).set_size(task_size).set_rate(rate);
89 other_comm->match_fun = match_fun;
90 other_comm->copy_data_fun = copy_data_fun;
92 if (MC_is_active() || MC_record_replay_is_active())
93 other_comm->state_ = simgrid::kernel::activity::State::RUNNING;
97 return (detached ? nullptr : other_comm);
100 XBT_PRIVATE void simcall_HANDLER_comm_recv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
101 unsigned char* dst_buff, size_t* dst_buff_size,
102 bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
103 void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t),
104 void* data, double timeout, double rate)
106 simgrid::kernel::activity::ActivityImplPtr comm = simcall_HANDLER_comm_irecv(
107 simcall, receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
108 SIMCALL_SET_MC_VALUE(*simcall, 0);
109 simcall_HANDLER_comm_wait(simcall, static_cast<simgrid::kernel::activity::CommImpl*>(comm.get()), timeout);
112 XBT_PRIVATE simgrid::kernel::activity::ActivityImplPtr
113 simcall_HANDLER_comm_irecv(smx_simcall_t /*simcall*/, smx_actor_t receiver, smx_mailbox_t mbox, unsigned char* dst_buff,
114 size_t* dst_buff_size, bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
115 void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t), void* data,
118 simgrid::kernel::activity::CommImplPtr this_synchro =
119 simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl());
120 this_synchro->set_type(simgrid::kernel::activity::CommImpl::Type::RECEIVE);
121 XBT_DEBUG("recv from mbox %p. this_synchro=%p", mbox, this_synchro.get());
123 simgrid::kernel::activity::CommImplPtr other_comm;
124 // communication already done, get it inside the list of completed comms
125 if (mbox->permanent_receiver_ != nullptr && not mbox->done_comm_queue_.empty()) {
126 XBT_DEBUG("We have a comm that has probably already been received, trying to match it, to skip the communication");
127 // find a match in the list of already received comms
128 other_comm = mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::SEND, match_fun, data,
129 this_synchro, /*done*/ true,
130 /*remove_matching*/ true);
131 // if not found, assume the receiver came first, register it to the mailbox in the classical way
132 if (not other_comm) {
133 XBT_DEBUG("We have messages in the permanent receive list, but not the one we are looking for, pushing request "
135 other_comm = std::move(this_synchro);
136 mbox->push(other_comm);
138 if (other_comm->surf_action_ && other_comm->get_remaining() < 1e-12) {
139 XBT_DEBUG("comm %p has been already sent, and is finished, destroy it", other_comm.get());
140 other_comm->state_ = simgrid::kernel::activity::State::DONE;
141 other_comm->set_type(simgrid::kernel::activity::CommImpl::Type::DONE).set_mailbox(nullptr);
145 /* Prepare a comm describing us, so that it gets passed to the user-provided filter of other side */
147 /* Look for communication activity matching our needs. We also provide a description of
148 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
150 * If it is not found then push our communication into the rendez-vous point */
151 other_comm = mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::SEND, match_fun, data,
152 this_synchro, /*done*/ false,
153 /*remove_matching*/ true);
155 if (other_comm == nullptr) {
156 XBT_DEBUG("Receive pushed first (%zu comm enqueued so far)", mbox->comm_queue_.size());
157 other_comm = std::move(this_synchro);
158 mbox->push(other_comm);
160 XBT_DEBUG("Match my %p with the existing %p", this_synchro.get(), other_comm.get());
162 other_comm->state_ = simgrid::kernel::activity::State::READY;
163 other_comm->set_type(simgrid::kernel::activity::CommImpl::Type::READY);
165 receiver->comms.push_back(other_comm);
168 /* Setup communication synchro */
169 other_comm->dst_actor_ = receiver;
170 other_comm->dst_data_ = data;
171 other_comm->set_dst_buff(dst_buff, dst_buff_size);
173 if (rate > -1.0 && (other_comm->get_rate() < 0.0 || rate < other_comm->get_rate()))
174 other_comm->set_rate(rate);
176 other_comm->match_fun = match_fun;
177 other_comm->copy_data_fun = copy_data_fun;
179 if (MC_is_active() || MC_record_replay_is_active()) {
180 other_comm->state_ = simgrid::kernel::activity::State::RUNNING;
187 void simcall_HANDLER_comm_wait(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comm, double timeout)
189 /* Associate this simcall to the wait synchro */
190 XBT_DEBUG("simcall_HANDLER_comm_wait, %p", comm);
192 comm->register_simcall(simcall);
194 if (MC_is_active() || MC_record_replay_is_active()) {
195 int idx = SIMCALL_GET_MC_VALUE(*simcall);
197 comm->state_ = simgrid::kernel::activity::State::DONE;
199 /* If we reached this point, the wait simcall must have a timeout */
200 /* Otherwise it shouldn't be enabled and executed by the MC */
204 if (comm->src_actor_ == simcall->issuer_)
205 comm->state_ = simgrid::kernel::activity::State::SRC_TIMEOUT;
207 comm->state_ = simgrid::kernel::activity::State::DST_TIMEOUT;
214 /* If the synchro has already finish perform the error handling, */
215 /* otherwise set up a waiting timeout on the right side */
216 if (comm->state_ != simgrid::kernel::activity::State::WAITING &&
217 comm->state_ != simgrid::kernel::activity::State::RUNNING) {
219 } else { /* we need a sleep action (even when there is no timeout) to be notified of host failures */
220 simgrid::kernel::resource::Action* sleep = simcall->issuer_->get_host()->pimpl_cpu->sleep(timeout);
221 sleep->set_activity(comm);
223 if (simcall->issuer_ == comm->src_actor_)
224 comm->src_timeout_ = sleep;
226 comm->dst_timeout_ = sleep;
230 void simcall_HANDLER_comm_test(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comm)
234 if (MC_is_active() || MC_record_replay_is_active()) {
235 res = comm->src_actor_ && comm->dst_actor_;
237 comm->state_ = simgrid::kernel::activity::State::DONE;
239 res = comm->state_ != simgrid::kernel::activity::State::WAITING &&
240 comm->state_ != simgrid::kernel::activity::State::RUNNING;
243 simcall_comm_test__set__result(simcall, res);
245 comm->simcalls_.push_back(simcall);
248 simcall->issuer_->simcall_answer();
252 void simcall_HANDLER_comm_testany(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comms[], size_t count)
254 // The default result is -1 -- this means, "nothing is ready".
255 // It can be changed below, but only if something matches.
256 simcall_comm_testany__set__result(simcall, -1);
258 if (MC_is_active() || MC_record_replay_is_active()) {
259 int idx = SIMCALL_GET_MC_VALUE(*simcall);
261 simcall->issuer_->simcall_answer();
263 simgrid::kernel::activity::CommImpl* comm = comms[idx];
264 simcall_comm_testany__set__result(simcall, idx);
265 comm->simcalls_.push_back(simcall);
266 comm->state_ = simgrid::kernel::activity::State::DONE;
272 for (std::size_t i = 0; i != count; ++i) {
273 simgrid::kernel::activity::CommImpl* comm = comms[i];
274 if (comm->state_ != simgrid::kernel::activity::State::WAITING &&
275 comm->state_ != simgrid::kernel::activity::State::RUNNING) {
276 simcall_comm_testany__set__result(simcall, i);
277 comm->simcalls_.push_back(simcall);
282 simcall->issuer_->simcall_answer();
285 static void SIMIX_waitany_remove_simcall_from_actions(smx_simcall_t simcall)
287 simgrid::kernel::activity::CommImpl** comms = simcall_comm_waitany__get__comms(simcall);
288 size_t count = simcall_comm_waitany__get__count(simcall);
290 for (size_t i = 0; i < count; i++) {
291 // Remove the first occurrence of simcall:
292 auto* comm = comms[i];
293 auto j = boost::range::find(comm->simcalls_, simcall);
294 if (j != comm->simcalls_.end())
295 comm->simcalls_.erase(j);
298 void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comms[], size_t count,
301 if (MC_is_active() || MC_record_replay_is_active()) {
303 xbt_die("Timeout not implemented for waitany in the model-checker");
304 int idx = SIMCALL_GET_MC_VALUE(*simcall);
305 auto* comm = comms[idx];
306 comm->simcalls_.push_back(simcall);
307 simcall_comm_waitany__set__result(simcall, idx);
308 comm->state_ = simgrid::kernel::activity::State::DONE;
314 simcall->timeout_cb_ = NULL;
316 simcall->timeout_cb_ = simgrid::simix::Timer::set(SIMIX_get_clock() + timeout, [simcall]() {
317 SIMIX_waitany_remove_simcall_from_actions(simcall);
318 simcall_comm_waitany__set__result(simcall, -1);
319 simcall->issuer_->simcall_answer();
323 for (size_t i = 0; i < count; i++) {
324 /* associate this simcall to the the synchro */
325 auto* comm = comms[i];
326 comm->simcalls_.push_back(simcall);
328 /* see if the synchro is already finished */
329 if (comm->state_ != simgrid::kernel::activity::State::WAITING &&
330 comm->state_ != simgrid::kernel::activity::State::RUNNING) {
337 /******************************************************************************/
338 /* SIMIX_comm_copy_data callbacks */
339 /******************************************************************************/
340 static void (*SIMIX_comm_copy_data_callback)(simgrid::kernel::activity::CommImpl*, void*,
341 size_t) = &SIMIX_comm_copy_pointer_callback;
343 void SIMIX_comm_copy_buffer_callback(simgrid::kernel::activity::CommImpl* comm, void* buff, size_t buff_size)
345 XBT_DEBUG("Copy the data over");
346 memcpy(comm->dst_buff_, buff, buff_size);
347 if (comm->detached()) { // if this is a detached send, the source buffer was duplicated by SMPI sender to make the
348 // original buffer available to the application ASAP
350 comm->src_buff_ = nullptr;
354 void SIMIX_comm_set_copy_data_callback(void (*callback)(simgrid::kernel::activity::CommImpl*, void*, size_t))
356 SIMIX_comm_copy_data_callback = callback;
359 void SIMIX_comm_copy_pointer_callback(simgrid::kernel::activity::CommImpl* comm, void* buff, size_t buff_size)
361 xbt_assert((buff_size == sizeof(void*)), "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
362 *(void**)(comm->dst_buff_) = buff;
369 CommImpl& CommImpl::set_type(CommImpl::Type type)
375 CommImpl& CommImpl::set_size(double size)
381 CommImpl& CommImpl::set_rate(double rate)
386 CommImpl& CommImpl::set_mailbox(MailboxImpl* mbox)
392 CommImpl& CommImpl::set_src_buff(unsigned char* buff, size_t size)
395 src_buff_size_ = size;
399 CommImpl& CommImpl::set_dst_buff(unsigned char* buff, size_t* size)
402 dst_buff_size_ = size;
406 CommImpl& CommImpl::detach()
412 CommImpl::~CommImpl()
414 XBT_DEBUG("Really free communication %p in state %d (detached = %d)", this, static_cast<int>(state_), detached_);
418 if (detached_ && state_ != State::DONE) {
419 /* the communication has failed and was detached:
420 * we have to free the buffer */
422 clean_fun(src_buff_);
429 /** @brief Starts the simulation of a communication synchro. */
430 CommImpl* CommImpl::start()
432 /* If both the sender and the receiver are already there, start the communication */
433 if (state_ == State::READY) {
434 s4u::Host* sender = src_actor_->get_host();
435 s4u::Host* receiver = dst_actor_->get_host();
437 surf_action_ = surf_network_model->communicate(sender, receiver, size_, rate_);
438 surf_action_->set_activity(this);
439 surf_action_->set_category(get_tracing_category());
440 state_ = State::RUNNING;
442 XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p)", this, sender->get_cname(),
443 receiver->get_cname(), surf_action_);
445 /* If a link is failed, detect it immediately */
446 if (surf_action_->get_state() == resource::Action::State::FAILED) {
447 XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", sender->get_cname(),
448 receiver->get_cname());
449 state_ = State::LINK_FAILURE;
452 } else if (src_actor_->is_suspended() || dst_actor_->is_suspended()) {
453 /* If any of the process is suspended, create the synchro but stop its execution,
454 it will be restarted when the sender process resume */
455 if (src_actor_->is_suspended())
456 XBT_DEBUG("The communication is suspended on startup because src (%s@%s) was suspended since it initiated the "
458 src_actor_->get_cname(), src_actor_->get_host()->get_cname());
460 XBT_DEBUG("The communication is suspended on startup because dst (%s@%s) was suspended since it initiated the "
462 dst_actor_->get_cname(), dst_actor_->get_host()->get_cname());
464 surf_action_->suspend();
471 /** @brief Copy the communication data from the sender's buffer to the receiver's one */
472 void CommImpl::copy_data()
474 size_t buff_size = src_buff_size_;
475 /* If there is no data to copy then return */
476 if (not src_buff_ || not dst_buff_ || copied_)
479 XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", this,
480 src_actor_ ? src_actor_->get_host()->get_cname() : "a finished process", src_buff_,
481 dst_actor_ ? dst_actor_->get_host()->get_cname() : "a finished process", dst_buff_, buff_size);
483 /* Copy at most dst_buff_size bytes of the message to receiver's buffer */
485 buff_size = std::min(buff_size, *(dst_buff_size_));
487 /* Update the receiver's buffer size to the copied amount */
489 *dst_buff_size_ = buff_size;
493 copy_data_fun(this, src_buff_, buff_size);
495 SIMIX_comm_copy_data_callback(this, src_buff_, buff_size);
498 /* Set the copied flag so we copy data only once */
499 /* (this function might be called from both communication ends) */
503 void CommImpl::suspend()
505 /* FIXME: shall we suspend also the timeout synchro? */
507 surf_action_->suspend();
508 /* if not created yet, the action will be suspended on creation, in CommImpl::start() */
511 void CommImpl::resume()
513 /*FIXME: check what happen with the timeouts */
515 surf_action_->resume();
516 /* in the other case, the synchro were not really suspended yet, see CommImpl::suspend() and CommImpl::start() */
519 void CommImpl::cancel()
521 /* if the synchro is a waiting state means that it is still in a mbox so remove from it and delete it */
522 if (state_ == State::WAITING) {
525 state_ = State::CANCELED;
527 } else if (not MC_is_active() /* when running the MC there are no surf actions */
528 && not MC_record_replay_is_active() && (state_ == State::READY || state_ == State::RUNNING)) {
529 surf_action_->cancel();
533 /** @brief This is part of the cleanup process, probably an internal command */
534 void CommImpl::cleanupSurf()
539 src_timeout_->unref();
540 src_timeout_ = nullptr;
544 dst_timeout_->unref();
545 dst_timeout_ = nullptr;
549 void CommImpl::post()
551 /* Update synchro state */
552 if (src_timeout_ && src_timeout_->get_state() == resource::Action::State::FINISHED)
553 state_ = State::SRC_TIMEOUT;
554 else if (dst_timeout_ && dst_timeout_->get_state() == resource::Action::State::FINISHED)
555 state_ = State::DST_TIMEOUT;
556 else if (src_timeout_ && src_timeout_->get_state() == resource::Action::State::FAILED)
557 state_ = State::SRC_HOST_FAILURE;
558 else if (dst_timeout_ && dst_timeout_->get_state() == resource::Action::State::FAILED)
559 state_ = State::DST_HOST_FAILURE;
560 else if (surf_action_ && surf_action_->get_state() == resource::Action::State::FAILED) {
561 state_ = State::LINK_FAILURE;
563 state_ = State::DONE;
565 XBT_DEBUG("SIMIX_post_comm: comm %p, state %d, src_proc %p, dst_proc %p, detached: %d", this, (int)state_,
566 src_actor_.get(), dst_actor_.get(), detached_);
568 /* destroy the surf actions associated with the Simix communication */
571 /* Answer all simcalls associated with the synchro */
575 void CommImpl::finish()
577 while (not simcalls_.empty()) {
578 smx_simcall_t simcall = simcalls_.front();
579 simcalls_.pop_front();
581 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
582 * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
585 if (simcall->call_ == SIMCALL_NONE) // FIXME: maybe a better way to handle this case
586 continue; // if actor handling comm is killed
587 if (simcall->call_ == SIMCALL_COMM_WAITANY) {
588 SIMIX_waitany_remove_simcall_from_actions(simcall);
589 if (simcall->timeout_cb_) {
590 simcall->timeout_cb_->remove();
591 simcall->timeout_cb_ = nullptr;
593 if (not MC_is_active() && not MC_record_replay_is_active()) {
594 CommImpl** comms = simcall_comm_waitany__get__comms(simcall);
595 size_t count = simcall_comm_waitany__get__count(simcall);
596 CommImpl** element = std::find(comms, comms + count, this);
597 int rank = (element != comms + count) ? element - comms : -1;
598 simcall_comm_waitany__set__result(simcall, rank);
602 /* If the synchro is still in a rendez-vous point then remove from it */
606 XBT_DEBUG("CommImpl::finish(): synchro state = %d", static_cast<int>(state_));
608 /* Check out for errors */
610 if (not simcall->issuer_->get_host()->is_on()) {
611 simcall->issuer_->context_->set_wannadie();
615 XBT_DEBUG("Communication %p complete!", this);
619 case State::SRC_TIMEOUT:
620 simcall->issuer_->exception_ = std::make_exception_ptr(
621 simgrid::TimeoutException(XBT_THROW_POINT, "Communication timeouted because of the sender"));
624 case State::DST_TIMEOUT:
625 simcall->issuer_->exception_ = std::make_exception_ptr(
626 simgrid::TimeoutException(XBT_THROW_POINT, "Communication timeouted because of the receiver"));
629 case State::SRC_HOST_FAILURE:
630 if (simcall->issuer_ == src_actor_)
631 simcall->issuer_->context_->set_wannadie();
633 simcall->issuer_->exception_ =
634 std::make_exception_ptr(simgrid::NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
637 case State::DST_HOST_FAILURE:
638 if (simcall->issuer_ == dst_actor_)
639 simcall->issuer_->context_->set_wannadie();
641 simcall->issuer_->exception_ =
642 std::make_exception_ptr(simgrid::NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
645 case State::LINK_FAILURE:
646 XBT_DEBUG("Link failure in synchro %p between '%s' and '%s': posting an exception to the issuer: %s (%p) "
648 this, src_actor_ ? src_actor_->get_host()->get_cname() : nullptr,
649 dst_actor_ ? dst_actor_->get_host()->get_cname() : nullptr, simcall->issuer_->get_cname(),
650 simcall->issuer_, detached_);
651 if (src_actor_ == simcall->issuer_) {
652 XBT_DEBUG("I'm source");
653 } else if (dst_actor_ == simcall->issuer_) {
654 XBT_DEBUG("I'm dest");
656 XBT_DEBUG("I'm neither source nor dest");
658 simcall->issuer_->throw_exception(
659 std::make_exception_ptr(simgrid::NetworkFailureException(XBT_THROW_POINT, "Link failure")));
662 case State::CANCELED:
663 if (simcall->issuer_ == dst_actor_)
664 simcall->issuer_->exception_ = std::make_exception_ptr(
665 simgrid::CancelException(XBT_THROW_POINT, "Communication canceled by the sender"));
667 simcall->issuer_->exception_ = std::make_exception_ptr(
668 simgrid::CancelException(XBT_THROW_POINT, "Communication canceled by the receiver"));
672 xbt_die("Unexpected synchro state in CommImpl::finish: %d", static_cast<int>(state_));
674 simcall->issuer_->simcall_answer();
676 /* if there is an exception during a waitany or a testany, indicate the position of the failed communication */
677 if (simcall->issuer_->exception_ &&
678 (simcall->call_ == SIMCALL_COMM_WAITANY || simcall->call_ == SIMCALL_COMM_TESTANY)) {
679 // First retrieve the rank of our failing synchro
682 if (simcall->call_ == SIMCALL_COMM_WAITANY) {
683 comms = simcall_comm_waitany__get__comms(simcall);
684 count = simcall_comm_waitany__get__count(simcall);
686 /* simcall->call_ == SIMCALL_COMM_TESTANY */
687 comms = simcall_comm_testany__get__comms(simcall);
688 count = simcall_comm_testany__get__count(simcall);
690 CommImpl** element = std::find(comms, comms + count, this);
691 int rank = (element != comms + count) ? element - comms : -1;
693 // In order to modify the exception we have to rethrow it:
695 std::rethrow_exception(simcall->issuer_->exception_);
696 } catch (simgrid::Exception& e) {
701 simcall->issuer_->waiting_synchro = nullptr;
702 simcall->issuer_->comms.remove(this);
704 if (simcall->issuer_ == src_actor_) {
706 dst_actor_->comms.remove(this);
707 } else if (simcall->issuer_ == dst_actor_) {
709 src_actor_->comms.remove(this);
711 dst_actor_->comms.remove(this);
712 src_actor_->comms.remove(this);
718 } // namespace activity
719 } // namespace kernel
720 } // namespace simgrid