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::CommImpl*
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::CommImpl*
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::CommImpl* comm = static_cast<simgrid::kernel::activity::CommImpl*>(synchro);
51 if (comm->type == SIMIX_COMM_SEND) {
52 other_user_data = comm->src_data;
53 } else if (comm->type == SIMIX_COMM_RECEIVE) {
54 other_user_data = comm->dst_data;
56 if (comm->type == type && (match_fun == nullptr || match_fun(this_user_data, other_user_data, synchro)) &&
57 (not comm->match_fun || comm->match_fun(other_user_data, this_user_data, my_synchro))) {
58 XBT_DEBUG("Found a matching communication synchro %p", comm);
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, (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,
80 double task_size, double rate,
81 void *src_buff, size_t src_buff_size,
82 int (*match_fun)(void *, void *,smx_activity_t),
83 void (*copy_data_fun)(smx_activity_t, void*, size_t),
84 void *data, double timeout){
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(smx_simcall_t simcall, smx_actor_t src_proc, smx_mailbox_t mbox,
92 double task_size, double rate,
93 void *src_buff, size_t src_buff_size,
94 int (*match_fun)(void *, void *,smx_activity_t),
95 void (*clean_fun)(void *), // used to free the synchro in case of problem after a detached send
96 void (*copy_data_fun)(smx_activity_t, void*, size_t),// used to copy data if not default one
97 void *data, int detached)
99 XBT_DEBUG("send from %p", mbox);
101 /* Prepare a synchro describing us, so that it gets passed to the user-provided filter of other side */
102 simgrid::kernel::activity::CommImpl* this_comm = 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::CommImpl* 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 = 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();
119 mbox->done_comm_queue.push_back(other_comm);
120 XBT_DEBUG("pushing a message into the permanent receive list %p, comm %p", mbox, other_comm);
123 mbox->push(this_comm);
126 XBT_DEBUG("Receive already pushed");
130 other_comm->state = SIMIX_READY;
131 other_comm->type = SIMIX_COMM_READY;
133 src_proc->comms.push_back(other_comm);
136 other_comm->detached = true;
137 other_comm->clean_fun = clean_fun;
139 other_comm->clean_fun = nullptr;
142 /* Setup the communication synchro */
143 other_comm->src_proc = src_proc;
144 other_comm->task_size = task_size;
145 other_comm->rate = rate;
146 other_comm->src_buff = src_buff;
147 other_comm->src_buff_size = src_buff_size;
148 other_comm->src_data = data;
150 other_comm->match_fun = match_fun;
151 other_comm->copy_data_fun = copy_data_fun;
154 if (MC_is_active() || MC_record_replay_is_active()) {
155 other_comm->state = SIMIX_RUNNING;
156 return (detached ? nullptr : other_comm);
159 SIMIX_comm_start(other_comm);
160 return (detached ? nullptr : other_comm);
163 XBT_PRIVATE void simcall_HANDLER_comm_recv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
164 void *dst_buff, size_t *dst_buff_size,
165 int (*match_fun)(void *, void *, smx_activity_t),
166 void (*copy_data_fun)(smx_activity_t, void*, size_t),
167 void *data, double timeout, double rate)
169 smx_activity_t comm = SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
170 SIMCALL_SET_MC_VALUE(simcall, 0);
171 simcall_HANDLER_comm_wait(simcall, comm, timeout);
174 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_irecv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
175 void *dst_buff, size_t *dst_buff_size,
176 int (*match_fun)(void *, void *, smx_activity_t),
177 void (*copy_data_fun)(smx_activity_t, void*, size_t),
178 void *data, double rate)
180 return SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
183 smx_activity_t SIMIX_comm_irecv(smx_actor_t dst_proc, smx_mailbox_t mbox, void *dst_buff, size_t *dst_buff_size,
184 int (*match_fun)(void *, void *, smx_activity_t),
185 void (*copy_data_fun)(smx_activity_t, void*, size_t), // used to copy data if not default one
186 void *data, double rate)
188 simgrid::kernel::activity::CommImpl* this_synchro = new simgrid::kernel::activity::CommImpl(SIMIX_COMM_RECEIVE);
189 XBT_DEBUG("recv from %p %p. this_synchro=%p", mbox, &mbox->comm_queue, this_synchro);
191 simgrid::kernel::activity::CommImpl* other_comm;
192 //communication already done, get it inside the list of completed comms
193 if (mbox->permanent_receiver != nullptr && not mbox->done_comm_queue.empty()) {
195 this_synchro->unref();
196 XBT_DEBUG("We have a comm that has probably already been received, trying to match it, to skip the communication");
197 //find a match in the list of already received comms
198 other_comm = _find_matching_comm(&mbox->done_comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
199 /*remove_matching*/ true);
200 //if not found, assume the receiver came first, register it to the mailbox in the classical way
201 if (not other_comm) {
202 XBT_DEBUG("We have messages in the permanent receive list, but not the one we are looking for, pushing request into list");
203 other_comm = this_synchro;
204 mbox->push(this_synchro);
206 if (other_comm->surf_comm && other_comm->remains() < 1e-12) {
207 XBT_DEBUG("comm %p has been already sent, and is finished, destroy it",other_comm);
208 other_comm->state = SIMIX_DONE;
209 other_comm->type = SIMIX_COMM_DONE;
210 other_comm->mbox = nullptr;
214 this_synchro->unref();
217 /* Prepare a comm describing us, so that it gets passed to the user-provided filter of other side */
219 /* Look for communication activity matching our needs. We also provide a description of
220 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
222 * If it is not found then push our communication into the rendez-vous point */
223 other_comm = _find_matching_comm(&mbox->comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
224 /*remove_matching*/ true);
226 if (not other_comm) {
227 XBT_DEBUG("Receive pushed first %zu", mbox->comm_queue.size());
228 other_comm = this_synchro;
229 mbox->push(this_synchro);
231 XBT_DEBUG("Match my %p with the existing %p", this_synchro, other_comm);
233 other_comm = static_cast<simgrid::kernel::activity::CommImpl*>(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::CommImpl* comm = static_cast<simgrid::kernel::activity::CommImpl*>(synchro);
322 if (comm->src_proc == simcall->issuer)
323 comm->state = SIMIX_SRC_TIMEOUT;
325 comm->state = SIMIX_DST_TIMEOUT;
328 SIMIX_comm_finish(synchro);
332 /* If the synchro has already finish perform the error handling, */
333 /* otherwise set up a waiting timeout on the right side */
334 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
335 SIMIX_comm_finish(synchro);
336 } 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 */
337 surf_action_t sleep = simcall->issuer->host->pimpl_cpu->sleep(timeout);
338 sleep->setData(synchro);
340 simgrid::kernel::activity::CommImpl* comm = static_cast<simgrid::kernel::activity::CommImpl*>(synchro);
341 if (simcall->issuer == comm->src_proc)
342 comm->src_timeout = sleep;
344 comm->dst_timeout = sleep;
348 void simcall_HANDLER_comm_test(smx_simcall_t simcall, smx_activity_t synchro)
350 simgrid::kernel::activity::CommImpl* comm = static_cast<simgrid::kernel::activity::CommImpl*>(synchro);
352 if (MC_is_active() || MC_record_replay_is_active()){
353 simcall_comm_test__set__result(simcall, comm->src_proc && comm->dst_proc);
354 if (simcall_comm_test__get__result(simcall)){
355 synchro->state = SIMIX_DONE;
356 synchro->simcalls.push_back(simcall);
357 SIMIX_comm_finish(synchro);
359 SIMIX_simcall_answer(simcall);
364 simcall_comm_test__set__result(simcall, (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING));
365 if (simcall_comm_test__get__result(simcall)) {
366 synchro->simcalls.push_back(simcall);
367 SIMIX_comm_finish(synchro);
369 SIMIX_simcall_answer(simcall);
373 void simcall_HANDLER_comm_testany(
374 smx_simcall_t simcall, simgrid::kernel::activity::ActivityImpl* comms[], size_t count)
376 // The default result is -1 -- this means, "nothing is ready".
377 // It can be changed below, but only if something matches.
378 simcall_comm_testany__set__result(simcall, -1);
380 if (MC_is_active() || MC_record_replay_is_active()){
381 int idx = SIMCALL_GET_MC_VALUE(simcall);
383 SIMIX_simcall_answer(simcall);
385 simgrid::kernel::activity::ActivityImpl* synchro = comms[idx];
386 simcall_comm_testany__set__result(simcall, idx);
387 synchro->simcalls.push_back(simcall);
388 synchro->state = SIMIX_DONE;
389 SIMIX_comm_finish(synchro);
394 for (std::size_t i = 0; i != count; ++i) {
395 simgrid::kernel::activity::ActivityImpl* synchro = comms[i];
396 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
397 simcall_comm_testany__set__result(simcall, i);
398 synchro->simcalls.push_back(simcall);
399 SIMIX_comm_finish(synchro);
403 SIMIX_simcall_answer(simcall);
406 void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, xbt_dynar_t synchros, double timeout)
408 smx_activity_t synchro;
409 unsigned int cursor = 0;
411 if (MC_is_active() || MC_record_replay_is_active()){
413 xbt_die("Timeout not implemented for waitany in the model-checker");
414 int idx = SIMCALL_GET_MC_VALUE(simcall);
415 synchro = xbt_dynar_get_as(synchros, idx, smx_activity_t);
416 synchro->simcalls.push_back(simcall);
417 simcall_comm_waitany__set__result(simcall, idx);
418 synchro->state = SIMIX_DONE;
419 SIMIX_comm_finish(synchro);
424 simcall->timer = NULL;
426 simcall->timer = SIMIX_timer_set(SIMIX_get_clock() + timeout, [simcall]() {
427 SIMIX_waitany_remove_simcall_from_actions(simcall);
428 simcall_comm_waitany__set__result(simcall, -1);
429 SIMIX_simcall_answer(simcall);
433 xbt_dynar_foreach(synchros, cursor, synchro){
434 /* associate this simcall to the the synchro */
435 synchro->simcalls.push_back(simcall);
437 /* see if the synchro is already finished */
438 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING){
439 SIMIX_comm_finish(synchro);
445 void SIMIX_waitany_remove_simcall_from_actions(smx_simcall_t simcall)
447 smx_activity_t synchro;
448 unsigned int cursor = 0;
449 xbt_dynar_t synchros = simcall_comm_waitany__get__comms(simcall);
451 xbt_dynar_foreach(synchros, cursor, synchro) {
452 // Remove the first occurence of simcall:
453 auto i = boost::range::find(synchro->simcalls, simcall);
454 if (i != synchro->simcalls.end())
455 synchro->simcalls.erase(i);
460 * \brief Starts the simulation of a communication synchro.
461 * \param synchro the communication synchro
463 static inline void SIMIX_comm_start(smx_activity_t synchro)
465 simgrid::kernel::activity::CommImpl* comm = static_cast<simgrid::kernel::activity::CommImpl*>(synchro);
467 /* If both the sender and the receiver are already there, start the communication */
468 if (synchro->state == SIMIX_READY) {
470 simgrid::s4u::Host* sender = comm->src_proc->host;
471 simgrid::s4u::Host* receiver = comm->dst_proc->host;
473 comm->surf_comm = surf_network_model->communicate(sender, receiver, comm->task_size, comm->rate);
474 comm->surf_comm->setData(synchro);
475 comm->state = SIMIX_RUNNING;
477 XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p)", synchro, sender->cname(),
478 receiver->cname(), comm->surf_comm);
480 /* If a link is failed, detect it immediately */
481 if (comm->surf_comm->getState() == simgrid::surf::Action::State::failed) {
482 XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", sender->cname(),
484 comm->state = SIMIX_LINK_FAILURE;
488 /* If any of the process is suspend, create the synchro but stop its execution,
489 it will be restarted when the sender process resume */
490 if (SIMIX_process_is_suspended(comm->src_proc) || SIMIX_process_is_suspended(comm->dst_proc)) {
491 if (SIMIX_process_is_suspended(comm->src_proc))
492 XBT_DEBUG("The communication is suspended on startup because src (%s@%s) was suspended since it initiated the "
494 comm->src_proc->cname(), comm->src_proc->host->cname());
496 XBT_DEBUG("The communication is suspended on startup because dst (%s@%s) was suspended since it initiated the "
498 comm->dst_proc->cname(), comm->dst_proc->host->cname());
500 comm->surf_comm->suspend();
506 * \brief Answers the SIMIX simcalls associated to a communication synchro.
507 * \param synchro a finished communication synchro
509 void SIMIX_comm_finish(smx_activity_t synchro)
511 simgrid::kernel::activity::CommImpl* comm = static_cast<simgrid::kernel::activity::CommImpl*>(synchro);
513 while (not synchro->simcalls.empty()) {
514 smx_simcall_t simcall = synchro->simcalls.front();
515 synchro->simcalls.pop_front();
517 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
518 * list. Afterwards, get the position of the actual synchro in the waitany dynar and return it as the result of the
521 if (simcall->call == SIMCALL_NONE) //FIXME: maybe a better way to handle this case
522 continue; // if process handling comm is killed
523 if (simcall->call == SIMCALL_COMM_WAITANY) {
524 SIMIX_waitany_remove_simcall_from_actions(simcall);
525 if (simcall->timer) {
526 SIMIX_timer_remove(simcall->timer);
527 simcall->timer = nullptr;
529 if (not MC_is_active() && not MC_record_replay_is_active())
530 simcall_comm_waitany__set__result(simcall,
531 xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro));
534 /* If the synchro is still in a rendez-vous point then remove from it */
536 comm->mbox->remove(comm);
538 XBT_DEBUG("SIMIX_comm_finish: synchro state = %d", (int)synchro->state);
540 /* Check out for errors */
542 if (simcall->issuer->host->isOff()) {
543 simcall->issuer->context->iwannadie = 1;
544 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
546 switch (comm->state) {
549 XBT_DEBUG("Communication %p complete!", synchro);
550 SIMIX_comm_copy_data(synchro);
553 case SIMIX_SRC_TIMEOUT:
554 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of sender");
557 case SIMIX_DST_TIMEOUT:
558 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of receiver");
561 case SIMIX_SRC_HOST_FAILURE:
562 if (simcall->issuer == comm->src_proc)
563 simcall->issuer->context->iwannadie = 1;
564 // SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
566 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
569 case SIMIX_DST_HOST_FAILURE:
570 if (simcall->issuer == comm->dst_proc)
571 simcall->issuer->context->iwannadie = 1;
572 // SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
574 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
577 case SIMIX_LINK_FAILURE:
578 XBT_DEBUG("Link failure in synchro %p between '%s' and '%s': posting an exception to the issuer: %s (%p) "
580 synchro, comm->src_proc ? comm->src_proc->host->cname() : nullptr,
581 comm->dst_proc ? comm->dst_proc->host->cname() : nullptr, simcall->issuer->cname(), simcall->issuer,
583 if (comm->src_proc == simcall->issuer) {
584 XBT_DEBUG("I'm source");
585 } else if (comm->dst_proc == simcall->issuer) {
586 XBT_DEBUG("I'm dest");
588 XBT_DEBUG("I'm neither source nor dest");
590 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Link failure");
594 if (simcall->issuer == comm->dst_proc)
595 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the sender");
597 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the receiver");
601 xbt_die("Unexpected synchro state in SIMIX_comm_finish: %d", (int)synchro->state);
605 /* if there is an exception during a waitany or a testany, indicate the position of the failed communication */
606 if (simcall->issuer->exception) {
607 // In order to modify the exception we have to rethrow it:
609 std::rethrow_exception(simcall->issuer->exception);
612 if (simcall->call == SIMCALL_COMM_WAITANY) {
613 e.value = xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro);
615 else if (simcall->call == SIMCALL_COMM_TESTANY) {
617 auto comms = simcall_comm_testany__get__comms(simcall);
618 auto count = simcall_comm_testany__get__count(simcall);
619 auto element = std::find(comms, comms + count, synchro);
620 if (element == comms + count)
623 e.value = element - comms;
625 simcall->issuer->exception = std::make_exception_ptr(e);
632 if (simcall->issuer->host->isOff()) {
633 simcall->issuer->context->iwannadie = 1;
636 simcall->issuer->waiting_synchro = nullptr;
637 simcall->issuer->comms.remove(synchro);
639 if(simcall->issuer == comm->src_proc){
641 comm->dst_proc->comms.remove(synchro);
643 else if(simcall->issuer == comm->dst_proc){
645 comm->src_proc->comms.remove(synchro);
648 comm->dst_proc->comms.remove(synchro);
649 comm->src_proc->comms.remove(synchro);
653 SIMIX_simcall_answer(simcall);
657 /******************************************************************************/
658 /* SIMIX_comm_copy_data callbacks */
659 /******************************************************************************/
660 static void (*SIMIX_comm_copy_data_callback) (smx_activity_t, void*, size_t) = &SIMIX_comm_copy_pointer_callback;
662 void SIMIX_comm_set_copy_data_callback(void (*callback) (smx_activity_t, void*, size_t))
664 SIMIX_comm_copy_data_callback = callback;
667 void SIMIX_comm_copy_pointer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
669 simgrid::kernel::activity::CommImpl* comm = static_cast<simgrid::kernel::activity::CommImpl*>(synchro);
671 xbt_assert((buff_size == sizeof(void *)), "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
672 *(void **) (comm->dst_buff) = buff;
675 void SIMIX_comm_copy_buffer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
677 simgrid::kernel::activity::CommImpl* comm = static_cast<simgrid::kernel::activity::CommImpl*>(synchro);
679 XBT_DEBUG("Copy the data over");
680 memcpy(comm->dst_buff, buff, buff_size);
681 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
683 comm->src_buff = nullptr;
688 * @brief Copy the communication data from the sender's buffer to the receiver's one
689 * @param synchro The communication
691 void SIMIX_comm_copy_data(smx_activity_t synchro)
693 simgrid::kernel::activity::CommImpl* comm = static_cast<simgrid::kernel::activity::CommImpl*>(synchro);
695 size_t buff_size = comm->src_buff_size;
696 /* If there is no data to copy then return */
697 if (not comm->src_buff || not comm->dst_buff || comm->copied)
700 XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", comm,
701 comm->src_proc ? comm->src_proc->host->cname() : "a finished process", comm->src_buff,
702 comm->dst_proc ? comm->dst_proc->host->cname() : "a finished process", comm->dst_buff, buff_size);
704 /* Copy at most dst_buff_size bytes of the message to receiver's buffer */
705 if (comm->dst_buff_size)
706 buff_size = MIN(buff_size, *(comm->dst_buff_size));
708 /* Update the receiver's buffer size to the copied amount */
709 if (comm->dst_buff_size)
710 *comm->dst_buff_size = buff_size;
713 if(comm->copy_data_fun)
714 comm->copy_data_fun (comm, comm->src_buff, buff_size);
716 SIMIX_comm_copy_data_callback (comm, comm->src_buff, buff_size);
719 /* Set the copied flag so we copy data only once */
720 /* (this function might be called from both communication ends) */