1 /* Copyright (c) 2009-2018. 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. */
8 #include <boost/range/algorithm.hpp>
10 #include "src/kernel/activity/CommImpl.hpp"
13 #include "simgrid/s4u/Host.hpp"
16 #include "simgrid/s4u/Activity.hpp"
17 #include "simgrid/s4u/Mailbox.hpp"
18 #include "src/mc/mc_replay.hpp"
19 #include "src/simix/smx_private.hpp"
20 #include "src/surf/cpu_interface.hpp"
21 #include "src/surf/surf_interface.hpp"
23 #include "src/surf/network_interface.hpp"
25 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_network, simix, "SIMIX network-related synchronization");
27 static void SIMIX_waitany_remove_simcall_from_actions(smx_simcall_t simcall);
28 static void SIMIX_comm_copy_data(smx_activity_t comm);
29 static void SIMIX_comm_start(simgrid::kernel::activity::CommImplPtr synchro);
32 * \brief Checks if there is a communication activity queued in a deque matching our needs
33 * \param deque where to search into
34 * \param type The type of communication we are looking for (comm_send, comm_recv)
35 * \param match_fun the function to apply
36 * \param this_user_data additional parameter to the match_fun
37 * \param my_synchro what to compare against
38 * \param remove_matching whether or not to clean the found object from the queue
39 * \return The communication activity if found, nullptr otherwise
41 static simgrid::kernel::activity::CommImplPtr
42 _find_matching_comm(boost::circular_buffer_space_optimized<smx_activity_t>* deque, e_smx_comm_type_t type,
43 int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*), void* this_user_data,
44 simgrid::kernel::activity::CommImplPtr my_synchro, bool remove_matching)
46 void* other_user_data = nullptr;
48 for(auto it = deque->begin(); it != deque->end(); it++){
49 simgrid::kernel::activity::CommImplPtr comm =
50 boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(std::move(*it));
52 if (comm->type == SIMIX_COMM_SEND) {
53 other_user_data = comm->src_data;
54 } else if (comm->type == SIMIX_COMM_RECEIVE) {
55 other_user_data = comm->dst_data;
57 if (comm->type == type && (match_fun == nullptr || match_fun(this_user_data, other_user_data, comm.get())) &&
58 (not comm->match_fun || comm->match_fun(other_user_data, this_user_data, my_synchro.get()))) {
59 XBT_DEBUG("Found a matching communication synchro %p", comm.get());
63 comm->mbox_cpy = comm->mbox;
68 XBT_DEBUG("Sorry, communication synchro %p does not match our needs:"
69 " its type is %d but we are looking for a comm of type %d (or maybe the filtering didn't match)",
70 comm.get(), (int)comm->type, (int)type);
72 XBT_DEBUG("No matching communication synchro found");
76 /******************************************************************************/
77 /* Communication synchros */
78 /******************************************************************************/
79 XBT_PRIVATE void simcall_HANDLER_comm_send(smx_simcall_t simcall, smx_actor_t src, smx_mailbox_t mbox, double task_size,
80 double rate, void* src_buff, size_t src_buff_size,
81 int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
82 void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data,
85 smx_activity_t comm = simcall_HANDLER_comm_isend(simcall, src, mbox, task_size, rate,
86 src_buff, src_buff_size, match_fun, nullptr, copy_data_fun,
88 SIMCALL_SET_MC_VALUE(simcall, 0);
89 simcall_HANDLER_comm_wait(simcall, comm, timeout);
91 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_isend(
92 smx_simcall_t /*simcall*/, smx_actor_t src_proc, smx_mailbox_t mbox, double task_size, double rate, void* src_buff,
93 size_t src_buff_size, int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
94 void (*clean_fun)(void*), // used to free the synchro in case of problem after a detached send
95 void (*copy_data_fun)(smx_activity_t, void*, size_t), // used to copy data if not default one
96 void* data, int detached)
98 XBT_DEBUG("send from mailbox %p", mbox);
100 /* Prepare a synchro describing us, so that it gets passed to the user-provided filter of other side */
101 simgrid::kernel::activity::CommImplPtr this_comm =
102 simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_SEND));
104 /* Look for communication synchro matching our needs. We also provide a description of
105 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
107 * If it is not found then push our communication into the rendez-vous point */
108 simgrid::kernel::activity::CommImplPtr other_comm =
109 _find_matching_comm(&mbox->comm_queue, SIMIX_COMM_RECEIVE, match_fun, data, this_comm, /*remove_matching*/ true);
111 if (not other_comm) {
112 other_comm = std::move(this_comm);
114 if (mbox->permanent_receiver != nullptr) {
115 //this mailbox is for small messages, which have to be sent right now
116 other_comm->state = SIMIX_READY;
117 other_comm->dst_proc=mbox->permanent_receiver.get();
118 mbox->done_comm_queue.push_back(other_comm);
119 XBT_DEBUG("pushing a message into the permanent receive list %p, comm %p", mbox, other_comm.get());
122 mbox->push(other_comm);
125 XBT_DEBUG("Receive already pushed");
127 other_comm->state = SIMIX_READY;
128 other_comm->type = SIMIX_COMM_READY;
130 src_proc->comms.push_back(other_comm);
133 other_comm->detached = true;
134 other_comm->clean_fun = clean_fun;
136 other_comm->clean_fun = nullptr;
139 /* Setup the communication synchro */
140 other_comm->src_proc = src_proc;
141 other_comm->task_size = task_size;
142 other_comm->rate = rate;
143 other_comm->src_buff = src_buff;
144 other_comm->src_buff_size = src_buff_size;
145 other_comm->src_data = data;
147 other_comm->match_fun = match_fun;
148 other_comm->copy_data_fun = copy_data_fun;
151 if (MC_is_active() || MC_record_replay_is_active()) {
152 other_comm->state = SIMIX_RUNNING;
153 return (detached ? nullptr : other_comm);
156 SIMIX_comm_start(other_comm);
157 return (detached ? nullptr : other_comm);
160 XBT_PRIVATE void simcall_HANDLER_comm_recv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
161 void* dst_buff, size_t* dst_buff_size,
162 int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
163 void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data,
164 double timeout, double rate)
166 smx_activity_t comm = SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
167 SIMCALL_SET_MC_VALUE(simcall, 0);
168 simcall_HANDLER_comm_wait(simcall, comm, timeout);
171 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_irecv(smx_simcall_t /*simcall*/, smx_actor_t receiver,
172 smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size,
173 simix_match_func_t match_fun,
174 void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data,
177 return SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
181 SIMIX_comm_irecv(smx_actor_t dst_proc, smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size,
182 int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
183 void (*copy_data_fun)(smx_activity_t, void*, size_t), // used to copy data if not default one
184 void* data, double rate)
186 simgrid::kernel::activity::CommImplPtr this_synchro =
187 simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_RECEIVE));
188 XBT_DEBUG("recv from mbox %p. this_synchro=%p", mbox, this_synchro.get());
190 simgrid::kernel::activity::CommImplPtr other_comm;
191 //communication already done, get it inside the list of completed comms
192 if (mbox->permanent_receiver != nullptr && not mbox->done_comm_queue.empty()) {
194 XBT_DEBUG("We have a comm that has probably already been received, trying to match it, to skip the communication");
195 //find a match in the list of already received comms
196 other_comm = _find_matching_comm(&mbox->done_comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
197 /*remove_matching*/ true);
198 //if not found, assume the receiver came first, register it to the mailbox in the classical way
199 if (not other_comm) {
200 XBT_DEBUG("We have messages in the permanent receive list, but not the one we are looking for, pushing request into list");
201 other_comm = std::move(this_synchro);
202 mbox->push(other_comm);
204 if (other_comm->surfAction_ && other_comm->remains() < 1e-12) {
205 XBT_DEBUG("comm %p has been already sent, and is finished, destroy it", other_comm.get());
206 other_comm->state = SIMIX_DONE;
207 other_comm->type = SIMIX_COMM_DONE;
208 other_comm->mbox = nullptr;
212 /* Prepare a comm describing us, so that it gets passed to the user-provided filter of other side */
214 /* Look for communication activity matching our needs. We also provide a description of
215 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
217 * If it is not found then push our communication into the rendez-vous point */
218 other_comm = _find_matching_comm(&mbox->comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
219 /*remove_matching*/ true);
221 if (other_comm == nullptr) {
222 XBT_DEBUG("Receive pushed first (%zu comm enqueued so far)", mbox->comm_queue.size());
223 other_comm = std::move(this_synchro);
224 mbox->push(other_comm);
226 XBT_DEBUG("Match my %p with the existing %p", this_synchro.get(), other_comm.get());
228 other_comm->state = SIMIX_READY;
229 other_comm->type = SIMIX_COMM_READY;
231 dst_proc->comms.push_back(other_comm);
234 /* Setup communication synchro */
235 other_comm->dst_proc = dst_proc;
236 other_comm->dst_buff = dst_buff;
237 other_comm->dst_buff_size = dst_buff_size;
238 other_comm->dst_data = data;
240 if (rate > -1.0 && (other_comm->rate < 0.0 || rate < other_comm->rate))
241 other_comm->rate = rate;
243 other_comm->match_fun = match_fun;
244 other_comm->copy_data_fun = copy_data_fun;
246 if (MC_is_active() || MC_record_replay_is_active()) {
247 other_comm->state = SIMIX_RUNNING;
251 SIMIX_comm_start(other_comm);
255 smx_activity_t simcall_HANDLER_comm_iprobe(smx_simcall_t simcall, smx_mailbox_t mbox, int type,
256 simix_match_func_t match_fun, void* data)
258 return SIMIX_comm_iprobe(simcall->issuer, mbox, type, match_fun, data);
261 smx_activity_t SIMIX_comm_iprobe(smx_actor_t dst_proc, smx_mailbox_t mbox, int type, simix_match_func_t match_fun,
264 XBT_DEBUG("iprobe from %p %p", mbox, &mbox->comm_queue);
265 simgrid::kernel::activity::CommImplPtr this_comm;
268 this_comm = simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_SEND));
269 smx_type = SIMIX_COMM_RECEIVE;
271 this_comm = simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_RECEIVE));
272 smx_type = SIMIX_COMM_SEND;
274 smx_activity_t other_synchro=nullptr;
275 if (mbox->permanent_receiver != nullptr && not mbox->done_comm_queue.empty()) {
276 XBT_DEBUG("first check in the permanent recv mailbox, to see if we already got something");
277 other_synchro = _find_matching_comm(&mbox->done_comm_queue,
278 (e_smx_comm_type_t) smx_type, match_fun, data, this_comm,/*remove_matching*/false);
280 if (not other_synchro) {
281 XBT_DEBUG("check if we have more luck in the normal mailbox");
282 other_synchro = _find_matching_comm(&mbox->comm_queue,
283 (e_smx_comm_type_t) smx_type, match_fun, data, this_comm,/*remove_matching*/false);
286 return other_synchro;
289 void simcall_HANDLER_comm_wait(smx_simcall_t simcall, smx_activity_t synchro, double timeout)
291 /* Associate this simcall to the wait synchro */
292 XBT_DEBUG("simcall_HANDLER_comm_wait, %p", synchro.get());
294 synchro->simcalls.push_back(simcall);
295 simcall->issuer->waiting_synchro = synchro;
297 if (MC_is_active() || MC_record_replay_is_active()) {
298 int idx = SIMCALL_GET_MC_VALUE(simcall);
300 synchro->state = SIMIX_DONE;
302 /* If we reached this point, the wait simcall must have a timeout */
303 /* Otherwise it shouldn't be enabled and executed by the MC */
307 simgrid::kernel::activity::CommImplPtr comm =
308 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
309 if (comm->src_proc == simcall->issuer)
310 comm->state = SIMIX_SRC_TIMEOUT;
312 comm->state = SIMIX_DST_TIMEOUT;
315 SIMIX_comm_finish(synchro);
319 /* If the synchro has already finish perform the error handling, */
320 /* otherwise set up a waiting timeout on the right side */
321 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
322 SIMIX_comm_finish(synchro);
323 } else { /* we need a surf sleep action even when there is no timeout, otherwise surf won't tell us when the host
325 simgrid::kernel::resource::Action* sleep = simcall->issuer->host->pimpl_cpu->sleep(timeout);
326 sleep->set_data(synchro.get());
328 simgrid::kernel::activity::CommImplPtr comm =
329 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
330 if (simcall->issuer == comm->src_proc)
331 comm->src_timeout = sleep;
333 comm->dst_timeout = sleep;
337 void simcall_HANDLER_comm_test(smx_simcall_t simcall, smx_activity_t synchro)
339 simgrid::kernel::activity::CommImplPtr comm =
340 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
342 if (MC_is_active() || MC_record_replay_is_active()){
343 simcall_comm_test__set__result(simcall, comm->src_proc && comm->dst_proc);
344 if (simcall_comm_test__get__result(simcall)){
345 synchro->state = SIMIX_DONE;
346 synchro->simcalls.push_back(simcall);
347 SIMIX_comm_finish(synchro);
349 SIMIX_simcall_answer(simcall);
354 simcall_comm_test__set__result(simcall, (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING));
355 if (simcall_comm_test__get__result(simcall)) {
356 synchro->simcalls.push_back(simcall);
357 SIMIX_comm_finish(synchro);
359 SIMIX_simcall_answer(simcall);
363 void simcall_HANDLER_comm_testany(smx_simcall_t simcall, simgrid::kernel::activity::ActivityImplPtr comms[],
366 // The default result is -1 -- this means, "nothing is ready".
367 // It can be changed below, but only if something matches.
368 simcall_comm_testany__set__result(simcall, -1);
370 if (MC_is_active() || MC_record_replay_is_active()){
371 int idx = SIMCALL_GET_MC_VALUE(simcall);
373 SIMIX_simcall_answer(simcall);
375 simgrid::kernel::activity::ActivityImplPtr synchro = comms[idx];
376 simcall_comm_testany__set__result(simcall, idx);
377 synchro->simcalls.push_back(simcall);
378 synchro->state = SIMIX_DONE;
379 SIMIX_comm_finish(synchro);
384 for (std::size_t i = 0; i != count; ++i) {
385 simgrid::kernel::activity::ActivityImplPtr synchro = comms[i];
386 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
387 simcall_comm_testany__set__result(simcall, i);
388 synchro->simcalls.push_back(simcall);
389 SIMIX_comm_finish(synchro);
393 SIMIX_simcall_answer(simcall);
396 void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, xbt_dynar_t synchros, double timeout)
398 if (MC_is_active() || MC_record_replay_is_active()){
400 xbt_die("Timeout not implemented for waitany in the model-checker");
401 int idx = SIMCALL_GET_MC_VALUE(simcall);
402 smx_activity_t synchro = xbt_dynar_get_as(synchros, idx, smx_activity_t);
403 synchro->simcalls.push_back(simcall);
404 simcall_comm_waitany__set__result(simcall, idx);
405 synchro->state = SIMIX_DONE;
406 SIMIX_comm_finish(synchro);
411 simcall->timer = NULL;
413 simcall->timer = SIMIX_timer_set(SIMIX_get_clock() + timeout, [simcall]() {
414 SIMIX_waitany_remove_simcall_from_actions(simcall);
415 simcall_comm_waitany__set__result(simcall, -1);
416 SIMIX_simcall_answer(simcall);
421 simgrid::kernel::activity::ActivityImpl* ptr;
422 xbt_dynar_foreach(synchros, cursor, ptr){
423 smx_activity_t synchro = simgrid::kernel::activity::ActivityImplPtr(ptr);
424 /* associate this simcall to the the synchro */
425 synchro->simcalls.push_back(simcall);
427 /* see if the synchro is already finished */
428 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING){
429 SIMIX_comm_finish(synchro);
435 void SIMIX_waitany_remove_simcall_from_actions(smx_simcall_t simcall)
437 unsigned int cursor = 0;
438 xbt_dynar_t synchros = simcall_comm_waitany__get__comms(simcall);
440 simgrid::kernel::activity::ActivityImpl* ptr;
441 xbt_dynar_foreach(synchros, cursor, ptr){
442 smx_activity_t synchro = simgrid::kernel::activity::ActivityImplPtr(ptr);
444 // Remove the first occurence of simcall:
445 auto i = boost::range::find(synchro->simcalls, simcall);
446 if (i != synchro->simcalls.end())
447 synchro->simcalls.erase(i);
452 * \brief Starts the simulation of a communication synchro.
453 * \param comm the communication that will be started
455 static inline void SIMIX_comm_start(simgrid::kernel::activity::CommImplPtr comm)
457 /* If both the sender and the receiver are already there, start the communication */
458 if (comm->state == SIMIX_READY) {
460 simgrid::s4u::Host* sender = comm->src_proc->host;
461 simgrid::s4u::Host* receiver = comm->dst_proc->host;
463 comm->surfAction_ = surf_network_model->communicate(sender, receiver, comm->task_size, comm->rate);
464 comm->surfAction_->set_data(comm.get());
465 comm->state = SIMIX_RUNNING;
467 XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p)", comm.get(), sender->get_cname(),
468 receiver->get_cname(), comm->surfAction_);
470 /* If a link is failed, detect it immediately */
471 if (comm->surfAction_->get_state() == simgrid::kernel::resource::Action::State::failed) {
472 XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", sender->get_cname(),
473 receiver->get_cname());
474 comm->state = SIMIX_LINK_FAILURE;
478 /* If any of the process is suspended, create the synchro but stop its execution,
479 it will be restarted when the sender process resume */
480 if (comm->src_proc->isSuspended() || comm->dst_proc->isSuspended()) {
481 if (comm->src_proc->isSuspended())
482 XBT_DEBUG("The communication is suspended on startup because src (%s@%s) was suspended since it initiated the "
484 comm->src_proc->get_cname(), comm->src_proc->host->get_cname());
486 XBT_DEBUG("The communication is suspended on startup because dst (%s@%s) was suspended since it initiated the "
488 comm->dst_proc->get_cname(), comm->dst_proc->host->get_cname());
490 comm->surfAction_->suspend();
496 * \brief Answers the SIMIX simcalls associated to a communication synchro.
497 * \param synchro a finished communication synchro
499 void SIMIX_comm_finish(smx_activity_t synchro)
501 simgrid::kernel::activity::CommImplPtr comm =
502 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
504 while (not synchro->simcalls.empty()) {
505 smx_simcall_t simcall = synchro->simcalls.front();
506 synchro->simcalls.pop_front();
508 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
509 * list. Afterwards, get the position of the actual synchro in the waitany dynar and return it as the result of the
512 if (simcall->call == SIMCALL_NONE) //FIXME: maybe a better way to handle this case
513 continue; // if process handling comm is killed
514 if (simcall->call == SIMCALL_COMM_WAITANY) {
515 SIMIX_waitany_remove_simcall_from_actions(simcall);
516 if (simcall->timer) {
517 SIMIX_timer_remove(simcall->timer);
518 simcall->timer = nullptr;
520 if (not MC_is_active() && not MC_record_replay_is_active())
521 simcall_comm_waitany__set__result(simcall,
522 xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro));
525 /* If the synchro is still in a rendez-vous point then remove from it */
527 comm->mbox->remove(comm);
529 XBT_DEBUG("SIMIX_comm_finish: synchro state = %d", (int)synchro->state);
531 /* Check out for errors */
533 if (simcall->issuer->host->isOff()) {
534 simcall->issuer->context->iwannadie = 1;
535 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
537 switch (comm->state) {
540 XBT_DEBUG("Communication %p complete!", synchro.get());
541 SIMIX_comm_copy_data(synchro);
544 case SIMIX_SRC_TIMEOUT:
545 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of sender");
548 case SIMIX_DST_TIMEOUT:
549 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of receiver");
552 case SIMIX_SRC_HOST_FAILURE:
553 if (simcall->issuer == comm->src_proc)
554 simcall->issuer->context->iwannadie = 1;
556 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
559 case SIMIX_DST_HOST_FAILURE:
560 if (simcall->issuer == comm->dst_proc)
561 simcall->issuer->context->iwannadie = 1;
563 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
566 case SIMIX_LINK_FAILURE:
567 XBT_DEBUG("Link failure in synchro %p between '%s' and '%s': posting an exception to the issuer: %s (%p) "
569 synchro.get(), comm->src_proc ? comm->src_proc->host->get_cname() : nullptr,
570 comm->dst_proc ? comm->dst_proc->host->get_cname() : nullptr, simcall->issuer->get_cname(),
571 simcall->issuer, comm->detached);
572 if (comm->src_proc == simcall->issuer) {
573 XBT_DEBUG("I'm source");
574 } else if (comm->dst_proc == simcall->issuer) {
575 XBT_DEBUG("I'm dest");
577 XBT_DEBUG("I'm neither source nor dest");
579 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Link failure");
583 if (simcall->issuer == comm->dst_proc)
584 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the sender");
586 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the receiver");
590 xbt_die("Unexpected synchro state in SIMIX_comm_finish: %d", (int)synchro->state);
594 /* if there is an exception during a waitany or a testany, indicate the position of the failed communication */
595 if (simcall->issuer->exception) {
596 // In order to modify the exception we have to rethrow it:
598 std::rethrow_exception(simcall->issuer->exception);
601 if (simcall->call == SIMCALL_COMM_WAITANY) {
602 e.value = xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro);
604 else if (simcall->call == SIMCALL_COMM_TESTANY) {
606 auto* comms = simcall_comm_testany__get__comms(simcall);
607 auto count = simcall_comm_testany__get__count(simcall);
608 auto element = std::find(comms, comms + count, synchro);
609 if (element == comms + count)
612 e.value = element - comms;
614 simcall->issuer->exception = std::make_exception_ptr(e);
621 if (simcall->issuer->host->isOff()) {
622 simcall->issuer->context->iwannadie = 1;
625 simcall->issuer->waiting_synchro = nullptr;
626 simcall->issuer->comms.remove(synchro);
628 if(simcall->issuer == comm->src_proc){
630 comm->dst_proc->comms.remove(synchro);
632 else if(simcall->issuer == comm->dst_proc){
634 comm->src_proc->comms.remove(synchro);
637 comm->dst_proc->comms.remove(synchro);
638 comm->src_proc->comms.remove(synchro);
642 SIMIX_simcall_answer(simcall);
646 /******************************************************************************/
647 /* SIMIX_comm_copy_data callbacks */
648 /******************************************************************************/
649 static void (*SIMIX_comm_copy_data_callback) (smx_activity_t, void*, size_t) = &SIMIX_comm_copy_pointer_callback;
651 void SIMIX_comm_set_copy_data_callback(void (*callback) (smx_activity_t, void*, size_t))
653 SIMIX_comm_copy_data_callback = callback;
656 void SIMIX_comm_copy_pointer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
658 simgrid::kernel::activity::CommImplPtr comm =
659 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
661 xbt_assert((buff_size == sizeof(void *)), "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
662 *(void **) (comm->dst_buff) = buff;
665 void SIMIX_comm_copy_buffer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
667 simgrid::kernel::activity::CommImplPtr comm =
668 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
670 XBT_DEBUG("Copy the data over");
671 memcpy(comm->dst_buff, buff, buff_size);
672 if (comm->detached) { // if this is a detached send, the source buffer was duplicated by SMPI sender to make the original buffer available to the application ASAP
674 comm->src_buff = nullptr;
679 * @brief Copy the communication data from the sender's buffer to the receiver's one
680 * @param synchro The communication
682 void SIMIX_comm_copy_data(smx_activity_t synchro)
684 simgrid::kernel::activity::CommImplPtr comm =
685 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
687 size_t buff_size = comm->src_buff_size;
688 /* If there is no data to copy then return */
689 if (not comm->src_buff || not comm->dst_buff || comm->copied)
692 XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", comm.get(),
693 comm->src_proc ? comm->src_proc->host->get_cname() : "a finished process", comm->src_buff,
694 comm->dst_proc ? comm->dst_proc->host->get_cname() : "a finished process", comm->dst_buff, buff_size);
696 /* Copy at most dst_buff_size bytes of the message to receiver's buffer */
697 if (comm->dst_buff_size)
698 buff_size = std::min(buff_size, *(comm->dst_buff_size));
700 /* Update the receiver's buffer size to the copied amount */
701 if (comm->dst_buff_size)
702 *comm->dst_buff_size = buff_size;
705 if(comm->copy_data_fun)
706 comm->copy_data_fun (comm, comm->src_buff, buff_size);
708 SIMIX_comm_copy_data_callback (comm, comm->src_buff, buff_size);
711 /* Set the copied flag so we copy data only once */
712 /* (this function might be called from both communication ends) */