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.h"
19 #include "src/simix/smx_private.h"
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(smx_activity_t synchro);
30 static simgrid::kernel::activity::CommImplPtr
31 _find_matching_comm(boost::circular_buffer_space_optimized<smx_activity_t>* deque, e_smx_comm_type_t type,
32 int (*match_fun)(void*, void*, smx_activity_t), void* user_data, smx_activity_t my_synchro,
33 bool remove_matching);
36 * \brief Checks if there is a communication activity queued in a deque matching our needs
37 * \param type The type of communication we are looking for (comm_send, comm_recv)
38 * \return The communication activity if found, nullptr otherwise
40 static simgrid::kernel::activity::CommImplPtr
41 _find_matching_comm(boost::circular_buffer_space_optimized<smx_activity_t>* deque, e_smx_comm_type_t type,
42 int (*match_fun)(void*, void*, smx_activity_t), void* this_user_data, smx_activity_t my_synchro,
45 void* other_user_data = nullptr;
47 for(auto it = deque->begin(); it != deque->end(); it++){
48 smx_activity_t synchro = *it;
49 simgrid::kernel::activity::CommImplPtr comm =
50 boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
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, synchro)) &&
58 (not comm->match_fun || comm->match_fun(other_user_data, this_user_data, my_synchro))) {
59 XBT_DEBUG("Found a matching communication synchro %p", comm);
64 comm->mbox_cpy = comm->mbox;
69 XBT_DEBUG("Sorry, communication synchro %p does not match our needs:"
70 " its type is %d but we are looking for a comm of type %d (or maybe the filtering didn't match)",
71 comm, (int)comm->type, (int)type);
73 XBT_DEBUG("No matching communication synchro found");
77 /******************************************************************************/
78 /* Communication synchros */
79 /******************************************************************************/
80 XBT_PRIVATE void simcall_HANDLER_comm_send(smx_simcall_t simcall, smx_actor_t src, smx_mailbox_t mbox,
81 double task_size, double rate,
82 void *src_buff, size_t src_buff_size,
83 int (*match_fun)(void *, void *,smx_activity_t),
84 void (*copy_data_fun)(smx_activity_t, void*, size_t),
85 void *data, double timeout){
86 smx_activity_t comm = simcall_HANDLER_comm_isend(simcall, src, mbox, task_size, rate,
87 src_buff, src_buff_size, match_fun, nullptr, copy_data_fun,
89 SIMCALL_SET_MC_VALUE(simcall, 0);
90 simcall_HANDLER_comm_wait(simcall, comm, timeout);
92 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_isend(smx_simcall_t simcall, smx_actor_t src_proc, smx_mailbox_t mbox,
93 double task_size, double rate,
94 void *src_buff, size_t src_buff_size,
95 int (*match_fun)(void *, void *,smx_activity_t),
96 void (*clean_fun)(void *), // used to free the synchro in case of problem after a detached send
97 void (*copy_data_fun)(smx_activity_t, void*, size_t),// used to copy data if not default one
98 void *data, int detached)
100 XBT_DEBUG("send from %p", mbox);
102 /* Prepare a synchro describing us, so that it gets passed to the user-provided filter of other side */
103 simgrid::kernel::activity::CommImpl* this_comm = new simgrid::kernel::activity::CommImpl(SIMIX_COMM_SEND);
105 /* Look for communication synchro matching our needs. We also provide a description of
106 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
108 * If it is not found then push our communication into the rendez-vous point */
109 simgrid::kernel::activity::CommImplPtr other_comm =
110 _find_matching_comm(&mbox->comm_queue, SIMIX_COMM_RECEIVE, match_fun, data, this_comm, /*remove_matching*/ true);
112 if (not other_comm) {
113 other_comm = this_comm;
115 if (mbox->permanent_receiver!=nullptr){
116 //this mailbox is for small messages, which have to be sent right now
117 other_comm->state = SIMIX_READY;
118 other_comm->dst_proc=mbox->permanent_receiver.get();
120 mbox->done_comm_queue.push_back(other_comm);
121 XBT_DEBUG("pushing a message into the permanent receive list %p, comm %p", mbox, other_comm);
124 mbox->push(this_comm);
127 XBT_DEBUG("Receive already pushed");
131 other_comm->state = SIMIX_READY;
132 other_comm->type = SIMIX_COMM_READY;
134 src_proc->comms.push_back(other_comm);
137 other_comm->detached = true;
138 other_comm->clean_fun = clean_fun;
140 other_comm->clean_fun = nullptr;
143 /* Setup the communication synchro */
144 other_comm->src_proc = src_proc;
145 other_comm->task_size = task_size;
146 other_comm->rate = rate;
147 other_comm->src_buff = src_buff;
148 other_comm->src_buff_size = src_buff_size;
149 other_comm->src_data = data;
151 other_comm->match_fun = match_fun;
152 other_comm->copy_data_fun = copy_data_fun;
155 if (MC_is_active() || MC_record_replay_is_active()) {
156 other_comm->state = SIMIX_RUNNING;
157 return (detached ? nullptr : other_comm);
160 SIMIX_comm_start(other_comm);
161 return (detached ? nullptr : other_comm);
164 XBT_PRIVATE void simcall_HANDLER_comm_recv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
165 void *dst_buff, size_t *dst_buff_size,
166 int (*match_fun)(void *, void *, smx_activity_t),
167 void (*copy_data_fun)(smx_activity_t, void*, size_t),
168 void *data, double timeout, double rate)
170 smx_activity_t comm = SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
171 SIMCALL_SET_MC_VALUE(simcall, 0);
172 simcall_HANDLER_comm_wait(simcall, comm, timeout);
175 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_irecv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
176 void *dst_buff, size_t *dst_buff_size,
177 int (*match_fun)(void *, void *, smx_activity_t),
178 void (*copy_data_fun)(smx_activity_t, void*, size_t),
179 void *data, double rate)
181 return SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
184 smx_activity_t SIMIX_comm_irecv(smx_actor_t dst_proc, smx_mailbox_t mbox, void *dst_buff, size_t *dst_buff_size,
185 int (*match_fun)(void *, void *, smx_activity_t),
186 void (*copy_data_fun)(smx_activity_t, void*, size_t), // used to copy data if not default one
187 void *data, double rate)
189 simgrid::kernel::activity::CommImplPtr this_synchro =
190 simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_RECEIVE));
191 XBT_DEBUG("recv from %p %p. this_synchro=%p", mbox, &mbox->comm_queue, this_synchro);
193 simgrid::kernel::activity::CommImplPtr other_comm;
194 //communication already done, get it inside the list of completed comms
195 if (mbox->permanent_receiver != nullptr && not mbox->done_comm_queue.empty()) {
197 this_synchro->unref();
198 XBT_DEBUG("We have a comm that has probably already been received, trying to match it, to skip the communication");
199 //find a match in the list of already received comms
200 other_comm = _find_matching_comm(&mbox->done_comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
201 /*remove_matching*/ true);
202 //if not found, assume the receiver came first, register it to the mailbox in the classical way
203 if (not other_comm) {
204 XBT_DEBUG("We have messages in the permanent receive list, but not the one we are looking for, pushing request into list");
205 other_comm = this_synchro;
206 mbox->push(this_synchro);
208 if (other_comm->surf_comm && other_comm->remains() < 1e-12) {
209 XBT_DEBUG("comm %p has been already sent, and is finished, destroy it",other_comm);
210 other_comm->state = SIMIX_DONE;
211 other_comm->type = SIMIX_COMM_DONE;
212 other_comm->mbox = nullptr;
216 this_synchro->unref();
219 /* Prepare a comm describing us, so that it gets passed to the user-provided filter of other side */
221 /* Look for communication activity matching our needs. We also provide a description of
222 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
224 * If it is not found then push our communication into the rendez-vous point */
225 other_comm = _find_matching_comm(&mbox->comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
226 /*remove_matching*/ true);
228 if (not other_comm) {
229 XBT_DEBUG("Receive pushed first %zu", mbox->comm_queue.size());
230 other_comm = this_synchro;
231 mbox->push(this_synchro);
233 XBT_DEBUG("Match my %p with the existing %p", this_synchro, other_comm);
235 other_comm->state = SIMIX_READY;
236 other_comm->type = SIMIX_COMM_READY;
237 this_synchro->unref();
238 this_synchro->unref();
240 dst_proc->comms.push_back(other_comm);
243 /* Setup communication synchro */
244 other_comm->dst_proc = dst_proc;
245 other_comm->dst_buff = dst_buff;
246 other_comm->dst_buff_size = dst_buff_size;
247 other_comm->dst_data = data;
249 if (rate > -1.0 && (other_comm->rate < 0.0 || rate < other_comm->rate))
250 other_comm->rate = rate;
252 other_comm->match_fun = match_fun;
253 other_comm->copy_data_fun = copy_data_fun;
255 if (MC_is_active() || MC_record_replay_is_active()) {
256 other_comm->state = SIMIX_RUNNING;
260 SIMIX_comm_start(other_comm);
264 smx_activity_t simcall_HANDLER_comm_iprobe(smx_simcall_t simcall, smx_mailbox_t mbox,
265 int type, int src, int tag,
266 int (*match_fun)(void *, void *, smx_activity_t),
268 return SIMIX_comm_iprobe(simcall->issuer, mbox, type, src, tag, match_fun, data);
271 smx_activity_t SIMIX_comm_iprobe(smx_actor_t dst_proc, smx_mailbox_t mbox, int type, int src,
272 int tag, int (*match_fun)(void *, void *, smx_activity_t), void *data)
274 XBT_DEBUG("iprobe from %p %p", mbox, &mbox->comm_queue);
275 simgrid::kernel::activity::CommImpl* this_comm;
278 this_comm = new simgrid::kernel::activity::CommImpl(SIMIX_COMM_SEND);
279 smx_type = SIMIX_COMM_RECEIVE;
281 this_comm = new simgrid::kernel::activity::CommImpl(SIMIX_COMM_RECEIVE);
282 smx_type = SIMIX_COMM_SEND;
284 smx_activity_t other_synchro=nullptr;
285 if (mbox->permanent_receiver != nullptr && not mbox->done_comm_queue.empty()) {
286 XBT_DEBUG("first check in the permanent recv mailbox, to see if we already got something");
287 other_synchro = _find_matching_comm(&mbox->done_comm_queue,
288 (e_smx_comm_type_t) smx_type, match_fun, data, this_comm,/*remove_matching*/false);
290 if (not other_synchro) {
291 XBT_DEBUG("check if we have more luck in the normal mailbox");
292 other_synchro = _find_matching_comm(&mbox->comm_queue,
293 (e_smx_comm_type_t) smx_type, match_fun, data, this_comm,/*remove_matching*/false);
297 other_synchro->unref();
300 return other_synchro;
303 void simcall_HANDLER_comm_wait(smx_simcall_t simcall, smx_activity_t synchro, double timeout)
305 /* Associate this simcall to the wait synchro */
306 XBT_DEBUG("simcall_HANDLER_comm_wait, %p", synchro);
308 synchro->simcalls.push_back(simcall);
309 simcall->issuer->waiting_synchro = synchro;
311 if (MC_is_active() || MC_record_replay_is_active()) {
312 int idx = SIMCALL_GET_MC_VALUE(simcall);
314 synchro->state = SIMIX_DONE;
316 /* If we reached this point, the wait simcall must have a timeout */
317 /* Otherwise it shouldn't be enabled and executed by the MC */
321 simgrid::kernel::activity::CommImplPtr comm =
322 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
323 if (comm->src_proc == simcall->issuer)
324 comm->state = SIMIX_SRC_TIMEOUT;
326 comm->state = SIMIX_DST_TIMEOUT;
329 SIMIX_comm_finish(synchro);
333 /* If the synchro has already finish perform the error handling, */
334 /* otherwise set up a waiting timeout on the right side */
335 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
336 SIMIX_comm_finish(synchro);
337 } else { /* if (timeout >= 0) { we need a surf sleep action even when there is no timeout, otherwise surf won't tell us when the host fails */
338 surf_action_t sleep = simcall->issuer->host->pimpl_cpu->sleep(timeout);
339 sleep->setData(&*synchro);
341 simgrid::kernel::activity::CommImplPtr comm =
342 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
343 if (simcall->issuer == comm->src_proc)
344 comm->src_timeout = sleep;
346 comm->dst_timeout = sleep;
350 void simcall_HANDLER_comm_test(smx_simcall_t simcall, smx_activity_t synchro)
352 simgrid::kernel::activity::CommImplPtr comm =
353 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
355 if (MC_is_active() || MC_record_replay_is_active()){
356 simcall_comm_test__set__result(simcall, comm->src_proc && comm->dst_proc);
357 if (simcall_comm_test__get__result(simcall)){
358 synchro->state = SIMIX_DONE;
359 synchro->simcalls.push_back(simcall);
360 SIMIX_comm_finish(synchro);
362 SIMIX_simcall_answer(simcall);
367 simcall_comm_test__set__result(simcall, (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING));
368 if (simcall_comm_test__get__result(simcall)) {
369 synchro->simcalls.push_back(simcall);
370 SIMIX_comm_finish(synchro);
372 SIMIX_simcall_answer(simcall);
376 void simcall_HANDLER_comm_testany(smx_simcall_t simcall, simgrid::kernel::activity::ActivityImplPtr comms[],
379 // The default result is -1 -- this means, "nothing is ready".
380 // It can be changed below, but only if something matches.
381 simcall_comm_testany__set__result(simcall, -1);
383 if (MC_is_active() || MC_record_replay_is_active()){
384 int idx = SIMCALL_GET_MC_VALUE(simcall);
386 SIMIX_simcall_answer(simcall);
388 simgrid::kernel::activity::ActivityImplPtr synchro = comms[idx];
389 simcall_comm_testany__set__result(simcall, idx);
390 synchro->simcalls.push_back(simcall);
391 synchro->state = SIMIX_DONE;
392 SIMIX_comm_finish(synchro);
397 for (std::size_t i = 0; i != count; ++i) {
398 simgrid::kernel::activity::ActivityImplPtr synchro = comms[i];
399 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
400 simcall_comm_testany__set__result(simcall, i);
401 synchro->simcalls.push_back(simcall);
402 SIMIX_comm_finish(synchro);
406 SIMIX_simcall_answer(simcall);
409 void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, xbt_dynar_t synchros, double timeout)
411 smx_activity_t synchro;
412 unsigned int cursor = 0;
414 if (MC_is_active() || MC_record_replay_is_active()){
416 xbt_die("Timeout not implemented for waitany in the model-checker");
417 int idx = SIMCALL_GET_MC_VALUE(simcall);
418 synchro = xbt_dynar_get_as(synchros, idx, smx_activity_t);
419 synchro->simcalls.push_back(simcall);
420 simcall_comm_waitany__set__result(simcall, idx);
421 synchro->state = SIMIX_DONE;
422 SIMIX_comm_finish(synchro);
427 simcall->timer = NULL;
429 simcall->timer = SIMIX_timer_set(SIMIX_get_clock() + timeout, [simcall]() {
430 SIMIX_waitany_remove_simcall_from_actions(simcall);
431 simcall_comm_waitany__set__result(simcall, -1);
432 SIMIX_simcall_answer(simcall);
436 xbt_dynar_foreach(synchros, cursor, synchro){
437 /* associate this simcall to the the synchro */
438 synchro->simcalls.push_back(simcall);
440 /* see if the synchro is already finished */
441 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING){
442 SIMIX_comm_finish(synchro);
448 void SIMIX_waitany_remove_simcall_from_actions(smx_simcall_t simcall)
450 smx_activity_t synchro;
451 unsigned int cursor = 0;
452 xbt_dynar_t synchros = simcall_comm_waitany__get__comms(simcall);
454 xbt_dynar_foreach(synchros, cursor, synchro) {
455 // Remove the first occurence of simcall:
456 auto i = boost::range::find(synchro->simcalls, simcall);
457 if (i != synchro->simcalls.end())
458 synchro->simcalls.erase(i);
463 * \brief Starts the simulation of a communication synchro.
464 * \param synchro the communication synchro
466 static inline void SIMIX_comm_start(smx_activity_t synchro)
468 simgrid::kernel::activity::CommImplPtr comm =
469 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
471 /* If both the sender and the receiver are already there, start the communication */
472 if (synchro->state == SIMIX_READY) {
474 simgrid::s4u::Host* sender = comm->src_proc->host;
475 simgrid::s4u::Host* receiver = comm->dst_proc->host;
477 comm->surf_comm = surf_network_model->communicate(sender, receiver, comm->task_size, comm->rate);
478 comm->surf_comm->setData(&*synchro);
479 comm->state = SIMIX_RUNNING;
481 XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p)", synchro, sender->cname(),
482 receiver->cname(), comm->surf_comm);
484 /* If a link is failed, detect it immediately */
485 if (comm->surf_comm->getState() == simgrid::surf::Action::State::failed) {
486 XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", sender->cname(),
488 comm->state = SIMIX_LINK_FAILURE;
492 /* If any of the process is suspend, create the synchro but stop its execution,
493 it will be restarted when the sender process resume */
494 if (SIMIX_process_is_suspended(comm->src_proc) || SIMIX_process_is_suspended(comm->dst_proc)) {
495 if (SIMIX_process_is_suspended(comm->src_proc))
496 XBT_DEBUG("The communication is suspended on startup because src (%s@%s) was suspended since it initiated the "
498 comm->src_proc->cname(), comm->src_proc->host->cname());
500 XBT_DEBUG("The communication is suspended on startup because dst (%s@%s) was suspended since it initiated the "
502 comm->dst_proc->cname(), comm->dst_proc->host->cname());
504 comm->surf_comm->suspend();
510 * \brief Answers the SIMIX simcalls associated to a communication synchro.
511 * \param synchro a finished communication synchro
513 void SIMIX_comm_finish(smx_activity_t synchro)
515 simgrid::kernel::activity::CommImplPtr comm =
516 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
518 while (not synchro->simcalls.empty()) {
519 smx_simcall_t simcall = synchro->simcalls.front();
520 synchro->simcalls.pop_front();
522 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
523 * list. Afterwards, get the position of the actual synchro in the waitany dynar and return it as the result of the
526 if (simcall->call == SIMCALL_NONE) //FIXME: maybe a better way to handle this case
527 continue; // if process handling comm is killed
528 if (simcall->call == SIMCALL_COMM_WAITANY) {
529 SIMIX_waitany_remove_simcall_from_actions(simcall);
530 if (simcall->timer) {
531 SIMIX_timer_remove(simcall->timer);
532 simcall->timer = nullptr;
534 if (not MC_is_active() && not MC_record_replay_is_active())
535 simcall_comm_waitany__set__result(simcall,
536 xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro));
539 /* If the synchro is still in a rendez-vous point then remove from it */
541 comm->mbox->remove(comm);
543 XBT_DEBUG("SIMIX_comm_finish: synchro state = %d", (int)synchro->state);
545 /* Check out for errors */
547 if (simcall->issuer->host->isOff()) {
548 simcall->issuer->context->iwannadie = 1;
549 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
551 switch (comm->state) {
554 XBT_DEBUG("Communication %p complete!", synchro);
555 SIMIX_comm_copy_data(synchro);
558 case SIMIX_SRC_TIMEOUT:
559 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of sender");
562 case SIMIX_DST_TIMEOUT:
563 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of receiver");
566 case SIMIX_SRC_HOST_FAILURE:
567 if (simcall->issuer == comm->src_proc)
568 simcall->issuer->context->iwannadie = 1;
569 // SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
571 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
574 case SIMIX_DST_HOST_FAILURE:
575 if (simcall->issuer == comm->dst_proc)
576 simcall->issuer->context->iwannadie = 1;
577 // SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
579 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
582 case SIMIX_LINK_FAILURE:
583 XBT_DEBUG("Link failure in synchro %p between '%s' and '%s': posting an exception to the issuer: %s (%p) "
585 synchro, comm->src_proc ? comm->src_proc->host->cname() : nullptr,
586 comm->dst_proc ? comm->dst_proc->host->cname() : nullptr, simcall->issuer->cname(), simcall->issuer,
588 if (comm->src_proc == simcall->issuer) {
589 XBT_DEBUG("I'm source");
590 } else if (comm->dst_proc == simcall->issuer) {
591 XBT_DEBUG("I'm dest");
593 XBT_DEBUG("I'm neither source nor dest");
595 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Link failure");
599 if (simcall->issuer == comm->dst_proc)
600 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the sender");
602 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the receiver");
606 xbt_die("Unexpected synchro state in SIMIX_comm_finish: %d", (int)synchro->state);
610 /* if there is an exception during a waitany or a testany, indicate the position of the failed communication */
611 if (simcall->issuer->exception) {
612 // In order to modify the exception we have to rethrow it:
614 std::rethrow_exception(simcall->issuer->exception);
617 if (simcall->call == SIMCALL_COMM_WAITANY) {
618 e.value = xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro);
620 else if (simcall->call == SIMCALL_COMM_TESTANY) {
622 auto comms = simcall_comm_testany__get__comms(simcall);
623 auto count = simcall_comm_testany__get__count(simcall);
624 auto element = std::find(comms, comms + count, synchro);
625 if (element == comms + count)
628 e.value = element - comms;
630 simcall->issuer->exception = std::make_exception_ptr(e);
637 if (simcall->issuer->host->isOff()) {
638 simcall->issuer->context->iwannadie = 1;
641 simcall->issuer->waiting_synchro = nullptr;
642 simcall->issuer->comms.remove(synchro);
644 if(simcall->issuer == comm->src_proc){
646 comm->dst_proc->comms.remove(synchro);
648 else if(simcall->issuer == comm->dst_proc){
650 comm->src_proc->comms.remove(synchro);
653 comm->dst_proc->comms.remove(synchro);
654 comm->src_proc->comms.remove(synchro);
658 SIMIX_simcall_answer(simcall);
662 /******************************************************************************/
663 /* SIMIX_comm_copy_data callbacks */
664 /******************************************************************************/
665 static void (*SIMIX_comm_copy_data_callback) (smx_activity_t, void*, size_t) = &SIMIX_comm_copy_pointer_callback;
667 void SIMIX_comm_set_copy_data_callback(void (*callback) (smx_activity_t, void*, size_t))
669 SIMIX_comm_copy_data_callback = callback;
672 void SIMIX_comm_copy_pointer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
674 simgrid::kernel::activity::CommImplPtr comm =
675 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
677 xbt_assert((buff_size == sizeof(void *)), "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
678 *(void **) (comm->dst_buff) = buff;
681 void SIMIX_comm_copy_buffer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
683 simgrid::kernel::activity::CommImplPtr comm =
684 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
686 XBT_DEBUG("Copy the data over");
687 memcpy(comm->dst_buff, buff, buff_size);
688 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
690 comm->src_buff = nullptr;
695 * @brief Copy the communication data from the sender's buffer to the receiver's one
696 * @param synchro The communication
698 void SIMIX_comm_copy_data(smx_activity_t synchro)
700 simgrid::kernel::activity::CommImplPtr comm =
701 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
703 size_t buff_size = comm->src_buff_size;
704 /* If there is no data to copy then return */
705 if (not comm->src_buff || not comm->dst_buff || comm->copied)
708 XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", comm,
709 comm->src_proc ? comm->src_proc->host->cname() : "a finished process", comm->src_buff,
710 comm->dst_proc ? comm->dst_proc->host->cname() : "a finished process", comm->dst_buff, buff_size);
712 /* Copy at most dst_buff_size bytes of the message to receiver's buffer */
713 if (comm->dst_buff_size)
714 buff_size = MIN(buff_size, *(comm->dst_buff_size));
716 /* Update the receiver's buffer size to the copied amount */
717 if (comm->dst_buff_size)
718 *comm->dst_buff_size = buff_size;
721 if(comm->copy_data_fun)
722 comm->copy_data_fun (comm, comm->src_buff, buff_size);
724 SIMIX_comm_copy_data_callback (comm, comm->src_buff, buff_size);
727 /* Set the copied flag so we copy data only once */
728 /* (this function might be called from both communication ends) */