1 /* Copyright (c) 2009-2017. 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 type The type of communication we are looking for (comm_send, comm_recv)
34 * \return The communication activity if found, nullptr otherwise
36 static simgrid::kernel::activity::CommImplPtr
37 _find_matching_comm(boost::circular_buffer_space_optimized<smx_activity_t>* deque, e_smx_comm_type_t type,
38 int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*), void* this_user_data,
39 simgrid::kernel::activity::CommImplPtr my_synchro, bool remove_matching)
41 void* other_user_data = nullptr;
43 for(auto it = deque->begin(); it != deque->end(); it++){
44 simgrid::kernel::activity::CommImplPtr comm =
45 boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(std::move(*it));
47 if (comm->type == SIMIX_COMM_SEND) {
48 other_user_data = comm->src_data;
49 } else if (comm->type == SIMIX_COMM_RECEIVE) {
50 other_user_data = comm->dst_data;
52 if (comm->type == type && (match_fun == nullptr || match_fun(this_user_data, other_user_data, comm.get())) &&
53 (not comm->match_fun || comm->match_fun(other_user_data, this_user_data, my_synchro.get()))) {
54 XBT_DEBUG("Found a matching communication synchro %p", comm.get());
58 comm->mbox_cpy = comm->mbox;
63 XBT_DEBUG("Sorry, communication synchro %p does not match our needs:"
64 " its type is %d but we are looking for a comm of type %d (or maybe the filtering didn't match)",
65 comm.get(), (int)comm->type, (int)type);
67 XBT_DEBUG("No matching communication synchro found");
71 /******************************************************************************/
72 /* Communication synchros */
73 /******************************************************************************/
74 XBT_PRIVATE void simcall_HANDLER_comm_send(smx_simcall_t simcall, smx_actor_t src, smx_mailbox_t mbox, double task_size,
75 double rate, void* src_buff, size_t src_buff_size,
76 int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
77 void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data,
80 smx_activity_t comm = simcall_HANDLER_comm_isend(simcall, src, mbox, task_size, rate,
81 src_buff, src_buff_size, match_fun, nullptr, copy_data_fun,
83 SIMCALL_SET_MC_VALUE(simcall, 0);
84 simcall_HANDLER_comm_wait(simcall, comm, timeout);
86 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_isend(
87 smx_simcall_t /*simcall*/, smx_actor_t src_proc, smx_mailbox_t mbox, double task_size, double rate, void* src_buff,
88 size_t src_buff_size, int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
89 void (*clean_fun)(void*), // used to free the synchro in case of problem after a detached send
90 void (*copy_data_fun)(smx_activity_t, void*, size_t), // used to copy data if not default one
91 void* data, int detached)
93 XBT_DEBUG("send from mailbox %p", mbox);
95 /* Prepare a synchro describing us, so that it gets passed to the user-provided filter of other side */
96 simgrid::kernel::activity::CommImplPtr this_comm =
97 simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_SEND));
99 /* Look for communication synchro matching our needs. We also provide a description of
100 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
102 * If it is not found then push our communication into the rendez-vous point */
103 simgrid::kernel::activity::CommImplPtr other_comm =
104 _find_matching_comm(&mbox->comm_queue, SIMIX_COMM_RECEIVE, match_fun, data, this_comm, /*remove_matching*/ true);
106 if (not other_comm) {
107 other_comm = std::move(this_comm);
109 if (mbox->permanent_receiver != nullptr) {
110 //this mailbox is for small messages, which have to be sent right now
111 other_comm->state = SIMIX_READY;
112 other_comm->dst_proc=mbox->permanent_receiver.get();
113 mbox->done_comm_queue.push_back(other_comm);
114 XBT_DEBUG("pushing a message into the permanent receive list %p, comm %p", mbox, other_comm.get());
117 mbox->push(other_comm);
120 XBT_DEBUG("Receive already pushed");
122 other_comm->state = SIMIX_READY;
123 other_comm->type = SIMIX_COMM_READY;
125 src_proc->comms.push_back(other_comm);
128 other_comm->detached = true;
129 other_comm->clean_fun = clean_fun;
131 other_comm->clean_fun = nullptr;
134 /* Setup the communication synchro */
135 other_comm->src_proc = src_proc;
136 other_comm->task_size = task_size;
137 other_comm->rate = rate;
138 other_comm->src_buff = src_buff;
139 other_comm->src_buff_size = src_buff_size;
140 other_comm->src_data = data;
142 other_comm->match_fun = match_fun;
143 other_comm->copy_data_fun = copy_data_fun;
146 if (MC_is_active() || MC_record_replay_is_active()) {
147 other_comm->state = SIMIX_RUNNING;
148 return (detached ? nullptr : other_comm);
151 SIMIX_comm_start(other_comm);
152 return (detached ? nullptr : other_comm);
155 XBT_PRIVATE void simcall_HANDLER_comm_recv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
156 void* dst_buff, size_t* dst_buff_size,
157 int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
158 void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data,
159 double timeout, double rate)
161 smx_activity_t comm = SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
162 SIMCALL_SET_MC_VALUE(simcall, 0);
163 simcall_HANDLER_comm_wait(simcall, comm, timeout);
166 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_irecv(smx_simcall_t /*simcall*/, smx_actor_t receiver,
167 smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size,
168 simix_match_func_t match_fun,
169 void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data,
172 return SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
176 SIMIX_comm_irecv(smx_actor_t dst_proc, smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size,
177 int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
178 void (*copy_data_fun)(smx_activity_t, void*, size_t), // used to copy data if not default one
179 void* data, double rate)
181 simgrid::kernel::activity::CommImplPtr this_synchro =
182 simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_RECEIVE));
183 XBT_DEBUG("recv from mbox %p. this_synchro=%p", mbox, this_synchro.get());
185 simgrid::kernel::activity::CommImplPtr other_comm;
186 //communication already done, get it inside the list of completed comms
187 if (mbox->permanent_receiver != nullptr && not mbox->done_comm_queue.empty()) {
189 XBT_DEBUG("We have a comm that has probably already been received, trying to match it, to skip the communication");
190 //find a match in the list of already received comms
191 other_comm = _find_matching_comm(&mbox->done_comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
192 /*remove_matching*/ true);
193 //if not found, assume the receiver came first, register it to the mailbox in the classical way
194 if (not other_comm) {
195 XBT_DEBUG("We have messages in the permanent receive list, but not the one we are looking for, pushing request into list");
196 other_comm = std::move(this_synchro);
197 mbox->push(other_comm);
199 if (other_comm->surf_comm && other_comm->remains() < 1e-12) {
200 XBT_DEBUG("comm %p has been already sent, and is finished, destroy it", other_comm.get());
201 other_comm->state = SIMIX_DONE;
202 other_comm->type = SIMIX_COMM_DONE;
203 other_comm->mbox = nullptr;
207 /* Prepare a comm describing us, so that it gets passed to the user-provided filter of other side */
209 /* Look for communication activity matching our needs. We also provide a description of
210 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
212 * If it is not found then push our communication into the rendez-vous point */
213 other_comm = _find_matching_comm(&mbox->comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
214 /*remove_matching*/ true);
216 if (other_comm == nullptr) {
217 XBT_DEBUG("Receive pushed first (%zu comm enqueued so far)", mbox->comm_queue.size());
218 other_comm = std::move(this_synchro);
219 mbox->push(other_comm);
221 XBT_DEBUG("Match my %p with the existing %p", this_synchro.get(), other_comm.get());
223 other_comm->state = SIMIX_READY;
224 other_comm->type = SIMIX_COMM_READY;
226 dst_proc->comms.push_back(other_comm);
229 /* Setup communication synchro */
230 other_comm->dst_proc = dst_proc;
231 other_comm->dst_buff = dst_buff;
232 other_comm->dst_buff_size = dst_buff_size;
233 other_comm->dst_data = data;
235 if (rate > -1.0 && (other_comm->rate < 0.0 || rate < other_comm->rate))
236 other_comm->rate = rate;
238 other_comm->match_fun = match_fun;
239 other_comm->copy_data_fun = copy_data_fun;
241 if (MC_is_active() || MC_record_replay_is_active()) {
242 other_comm->state = SIMIX_RUNNING;
246 SIMIX_comm_start(other_comm);
250 smx_activity_t simcall_HANDLER_comm_iprobe(smx_simcall_t simcall, smx_mailbox_t mbox, int type,
251 simix_match_func_t match_fun, void* data)
253 return SIMIX_comm_iprobe(simcall->issuer, mbox, type, match_fun, data);
256 smx_activity_t SIMIX_comm_iprobe(smx_actor_t dst_proc, smx_mailbox_t mbox, int type, simix_match_func_t match_fun,
259 XBT_DEBUG("iprobe from %p %p", mbox, &mbox->comm_queue);
260 simgrid::kernel::activity::CommImplPtr this_comm;
263 this_comm = simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_SEND));
264 smx_type = SIMIX_COMM_RECEIVE;
266 this_comm = simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_RECEIVE));
267 smx_type = SIMIX_COMM_SEND;
269 smx_activity_t other_synchro=nullptr;
270 if (mbox->permanent_receiver != nullptr && not mbox->done_comm_queue.empty()) {
271 XBT_DEBUG("first check in the permanent recv mailbox, to see if we already got something");
272 other_synchro = _find_matching_comm(&mbox->done_comm_queue,
273 (e_smx_comm_type_t) smx_type, match_fun, data, this_comm,/*remove_matching*/false);
275 if (not other_synchro) {
276 XBT_DEBUG("check if we have more luck in the normal mailbox");
277 other_synchro = _find_matching_comm(&mbox->comm_queue,
278 (e_smx_comm_type_t) smx_type, match_fun, data, this_comm,/*remove_matching*/false);
281 return other_synchro;
284 void simcall_HANDLER_comm_wait(smx_simcall_t simcall, smx_activity_t synchro, double timeout)
286 /* Associate this simcall to the wait synchro */
287 XBT_DEBUG("simcall_HANDLER_comm_wait, %p", synchro.get());
289 synchro->simcalls.push_back(simcall);
290 simcall->issuer->waiting_synchro = synchro;
292 if (MC_is_active() || MC_record_replay_is_active()) {
293 int idx = SIMCALL_GET_MC_VALUE(simcall);
295 synchro->state = SIMIX_DONE;
297 /* If we reached this point, the wait simcall must have a timeout */
298 /* Otherwise it shouldn't be enabled and executed by the MC */
302 simgrid::kernel::activity::CommImplPtr comm =
303 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
304 if (comm->src_proc == simcall->issuer)
305 comm->state = SIMIX_SRC_TIMEOUT;
307 comm->state = SIMIX_DST_TIMEOUT;
310 SIMIX_comm_finish(synchro);
314 /* If the synchro has already finish perform the error handling, */
315 /* otherwise set up a waiting timeout on the right side */
316 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
317 SIMIX_comm_finish(synchro);
318 } else { /* we need a surf sleep action even when there is no timeout, otherwise surf won't tell us when the host
320 surf_action_t sleep = simcall->issuer->host->pimpl_cpu->sleep(timeout);
321 sleep->setData(synchro.get());
323 simgrid::kernel::activity::CommImplPtr comm =
324 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
325 if (simcall->issuer == comm->src_proc)
326 comm->src_timeout = sleep;
328 comm->dst_timeout = sleep;
332 void simcall_HANDLER_comm_test(smx_simcall_t simcall, smx_activity_t synchro)
334 simgrid::kernel::activity::CommImplPtr comm =
335 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
337 if (MC_is_active() || MC_record_replay_is_active()){
338 simcall_comm_test__set__result(simcall, comm->src_proc && comm->dst_proc);
339 if (simcall_comm_test__get__result(simcall)){
340 synchro->state = SIMIX_DONE;
341 synchro->simcalls.push_back(simcall);
342 SIMIX_comm_finish(synchro);
344 SIMIX_simcall_answer(simcall);
349 simcall_comm_test__set__result(simcall, (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING));
350 if (simcall_comm_test__get__result(simcall)) {
351 synchro->simcalls.push_back(simcall);
352 SIMIX_comm_finish(synchro);
354 SIMIX_simcall_answer(simcall);
358 void simcall_HANDLER_comm_testany(smx_simcall_t simcall, simgrid::kernel::activity::ActivityImplPtr comms[],
361 // The default result is -1 -- this means, "nothing is ready".
362 // It can be changed below, but only if something matches.
363 simcall_comm_testany__set__result(simcall, -1);
365 if (MC_is_active() || MC_record_replay_is_active()){
366 int idx = SIMCALL_GET_MC_VALUE(simcall);
368 SIMIX_simcall_answer(simcall);
370 simgrid::kernel::activity::ActivityImplPtr synchro = comms[idx];
371 simcall_comm_testany__set__result(simcall, idx);
372 synchro->simcalls.push_back(simcall);
373 synchro->state = SIMIX_DONE;
374 SIMIX_comm_finish(synchro);
379 for (std::size_t i = 0; i != count; ++i) {
380 simgrid::kernel::activity::ActivityImplPtr synchro = comms[i];
381 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
382 simcall_comm_testany__set__result(simcall, i);
383 synchro->simcalls.push_back(simcall);
384 SIMIX_comm_finish(synchro);
388 SIMIX_simcall_answer(simcall);
391 void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, xbt_dynar_t synchros, double timeout)
393 if (MC_is_active() || MC_record_replay_is_active()){
395 xbt_die("Timeout not implemented for waitany in the model-checker");
396 int idx = SIMCALL_GET_MC_VALUE(simcall);
397 smx_activity_t synchro = xbt_dynar_get_as(synchros, idx, smx_activity_t);
398 synchro->simcalls.push_back(simcall);
399 simcall_comm_waitany__set__result(simcall, idx);
400 synchro->state = SIMIX_DONE;
401 SIMIX_comm_finish(synchro);
406 simcall->timer = NULL;
408 simcall->timer = SIMIX_timer_set(SIMIX_get_clock() + timeout, [simcall]() {
409 SIMIX_waitany_remove_simcall_from_actions(simcall);
410 simcall_comm_waitany__set__result(simcall, -1);
411 SIMIX_simcall_answer(simcall);
416 simgrid::kernel::activity::ActivityImpl* ptr;
417 xbt_dynar_foreach(synchros, cursor, ptr){
418 smx_activity_t synchro = simgrid::kernel::activity::ActivityImplPtr(ptr);
419 /* associate this simcall to the the synchro */
420 synchro->simcalls.push_back(simcall);
422 /* see if the synchro is already finished */
423 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING){
424 SIMIX_comm_finish(synchro);
430 void SIMIX_waitany_remove_simcall_from_actions(smx_simcall_t simcall)
432 unsigned int cursor = 0;
433 xbt_dynar_t synchros = simcall_comm_waitany__get__comms(simcall);
435 simgrid::kernel::activity::ActivityImpl* ptr;
436 xbt_dynar_foreach(synchros, cursor, ptr){
437 smx_activity_t synchro = simgrid::kernel::activity::ActivityImplPtr(ptr);
439 // Remove the first occurence of simcall:
440 auto i = boost::range::find(synchro->simcalls, simcall);
441 if (i != synchro->simcalls.end())
442 synchro->simcalls.erase(i);
447 * \brief Starts the simulation of a communication synchro.
448 * \param synchro the communication synchro
450 static inline void SIMIX_comm_start(simgrid::kernel::activity::CommImplPtr comm)
452 /* If both the sender and the receiver are already there, start the communication */
453 if (comm->state == SIMIX_READY) {
455 simgrid::s4u::Host* sender = comm->src_proc->host;
456 simgrid::s4u::Host* receiver = comm->dst_proc->host;
458 comm->surf_comm = surf_network_model->communicate(sender, receiver, comm->task_size, comm->rate);
459 comm->surf_comm->setData(comm.get());
460 comm->state = SIMIX_RUNNING;
462 XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p)", comm.get(), sender->getCname(),
463 receiver->getCname(), comm->surf_comm);
465 /* If a link is failed, detect it immediately */
466 if (comm->surf_comm->getState() == simgrid::surf::Action::State::failed) {
467 XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", sender->getCname(),
468 receiver->getCname());
469 comm->state = SIMIX_LINK_FAILURE;
473 /* If any of the process is suspend, create the synchro but stop its execution,
474 it will be restarted when the sender process resume */
475 if (comm->src_proc->isSuspended() || comm->dst_proc->isSuspended()) {
476 if (comm->src_proc->isSuspended())
477 XBT_DEBUG("The communication is suspended on startup because src (%s@%s) was suspended since it initiated the "
479 comm->src_proc->getCname(), comm->src_proc->host->getCname());
481 XBT_DEBUG("The communication is suspended on startup because dst (%s@%s) was suspended since it initiated the "
483 comm->dst_proc->getCname(), comm->dst_proc->host->getCname());
485 comm->surf_comm->suspend();
491 * \brief Answers the SIMIX simcalls associated to a communication synchro.
492 * \param synchro a finished communication synchro
494 void SIMIX_comm_finish(smx_activity_t synchro)
496 simgrid::kernel::activity::CommImplPtr comm =
497 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
499 while (not synchro->simcalls.empty()) {
500 smx_simcall_t simcall = synchro->simcalls.front();
501 synchro->simcalls.pop_front();
503 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
504 * list. Afterwards, get the position of the actual synchro in the waitany dynar and return it as the result of the
507 if (simcall->call == SIMCALL_NONE) //FIXME: maybe a better way to handle this case
508 continue; // if process handling comm is killed
509 if (simcall->call == SIMCALL_COMM_WAITANY) {
510 SIMIX_waitany_remove_simcall_from_actions(simcall);
511 if (simcall->timer) {
512 SIMIX_timer_remove(simcall->timer);
513 simcall->timer = nullptr;
515 if (not MC_is_active() && not MC_record_replay_is_active())
516 simcall_comm_waitany__set__result(simcall,
517 xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro));
520 /* If the synchro is still in a rendez-vous point then remove from it */
522 comm->mbox->remove(comm);
524 XBT_DEBUG("SIMIX_comm_finish: synchro state = %d", (int)synchro->state);
526 /* Check out for errors */
528 if (simcall->issuer->host->isOff()) {
529 simcall->issuer->context->iwannadie = 1;
530 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
532 switch (comm->state) {
535 XBT_DEBUG("Communication %p complete!", synchro.get());
536 SIMIX_comm_copy_data(synchro);
539 case SIMIX_SRC_TIMEOUT:
540 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of sender");
543 case SIMIX_DST_TIMEOUT:
544 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of receiver");
547 case SIMIX_SRC_HOST_FAILURE:
548 if (simcall->issuer == comm->src_proc)
549 simcall->issuer->context->iwannadie = 1;
551 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
554 case SIMIX_DST_HOST_FAILURE:
555 if (simcall->issuer == comm->dst_proc)
556 simcall->issuer->context->iwannadie = 1;
558 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
561 case SIMIX_LINK_FAILURE:
562 XBT_DEBUG("Link failure in synchro %p between '%s' and '%s': posting an exception to the issuer: %s (%p) "
564 synchro.get(), comm->src_proc ? comm->src_proc->host->getCname() : nullptr,
565 comm->dst_proc ? comm->dst_proc->host->getCname() : nullptr, simcall->issuer->getCname(),
566 simcall->issuer, comm->detached);
567 if (comm->src_proc == simcall->issuer) {
568 XBT_DEBUG("I'm source");
569 } else if (comm->dst_proc == simcall->issuer) {
570 XBT_DEBUG("I'm dest");
572 XBT_DEBUG("I'm neither source nor dest");
574 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Link failure");
578 if (simcall->issuer == comm->dst_proc)
579 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the sender");
581 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the receiver");
585 xbt_die("Unexpected synchro state in SIMIX_comm_finish: %d", (int)synchro->state);
589 /* if there is an exception during a waitany or a testany, indicate the position of the failed communication */
590 if (simcall->issuer->exception) {
591 // In order to modify the exception we have to rethrow it:
593 std::rethrow_exception(simcall->issuer->exception);
596 if (simcall->call == SIMCALL_COMM_WAITANY) {
597 e.value = xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro);
599 else if (simcall->call == SIMCALL_COMM_TESTANY) {
601 auto comms = simcall_comm_testany__get__comms(simcall);
602 auto count = simcall_comm_testany__get__count(simcall);
603 auto element = std::find(comms, comms + count, synchro);
604 if (element == comms + count)
607 e.value = element - comms;
609 simcall->issuer->exception = std::make_exception_ptr(e);
616 if (simcall->issuer->host->isOff()) {
617 simcall->issuer->context->iwannadie = 1;
620 simcall->issuer->waiting_synchro = nullptr;
621 simcall->issuer->comms.remove(synchro);
623 if(simcall->issuer == comm->src_proc){
625 comm->dst_proc->comms.remove(synchro);
627 else if(simcall->issuer == comm->dst_proc){
629 comm->src_proc->comms.remove(synchro);
632 comm->dst_proc->comms.remove(synchro);
633 comm->src_proc->comms.remove(synchro);
637 SIMIX_simcall_answer(simcall);
641 /******************************************************************************/
642 /* SIMIX_comm_copy_data callbacks */
643 /******************************************************************************/
644 static void (*SIMIX_comm_copy_data_callback) (smx_activity_t, void*, size_t) = &SIMIX_comm_copy_pointer_callback;
646 void SIMIX_comm_set_copy_data_callback(void (*callback) (smx_activity_t, void*, size_t))
648 SIMIX_comm_copy_data_callback = callback;
651 void SIMIX_comm_copy_pointer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
653 simgrid::kernel::activity::CommImplPtr comm =
654 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
656 xbt_assert((buff_size == sizeof(void *)), "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
657 *(void **) (comm->dst_buff) = buff;
660 void SIMIX_comm_copy_buffer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
662 simgrid::kernel::activity::CommImplPtr comm =
663 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
665 XBT_DEBUG("Copy the data over");
666 memcpy(comm->dst_buff, buff, buff_size);
667 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
669 comm->src_buff = nullptr;
674 * @brief Copy the communication data from the sender's buffer to the receiver's one
675 * @param synchro The communication
677 void SIMIX_comm_copy_data(smx_activity_t synchro)
679 simgrid::kernel::activity::CommImplPtr comm =
680 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
682 size_t buff_size = comm->src_buff_size;
683 /* If there is no data to copy then return */
684 if (not comm->src_buff || not comm->dst_buff || comm->copied)
687 XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", comm.get(),
688 comm->src_proc ? comm->src_proc->host->getCname() : "a finished process", comm->src_buff,
689 comm->dst_proc ? comm->dst_proc->host->getCname() : "a finished process", comm->dst_buff, buff_size);
691 /* Copy at most dst_buff_size bytes of the message to receiver's buffer */
692 if (comm->dst_buff_size)
693 buff_size = std::min(buff_size, *(comm->dst_buff_size));
695 /* Update the receiver's buffer size to the copied amount */
696 if (comm->dst_buff_size)
697 *comm->dst_buff_size = buff_size;
700 if(comm->copy_data_fun)
701 comm->copy_data_fun (comm, comm->src_buff, buff_size);
703 SIMIX_comm_copy_data_callback (comm, comm->src_buff, buff_size);
706 /* Set the copied flag so we copy data only once */
707 /* (this function might be called from both communication ends) */