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);
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*, smx_activity_t), void* this_user_data, smx_activity_t my_synchro,
41 void* other_user_data = nullptr;
43 for(auto it = deque->begin(); it != deque->end(); it++){
44 smx_activity_t synchro = *it;
45 simgrid::kernel::activity::CommImplPtr comm =
46 boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(std::move(synchro));
48 if (comm->type == SIMIX_COMM_SEND) {
49 other_user_data = comm->src_data;
50 } else if (comm->type == SIMIX_COMM_RECEIVE) {
51 other_user_data = comm->dst_data;
53 if (comm->type == type && (match_fun == nullptr || match_fun(this_user_data, other_user_data, comm)) &&
54 (not comm->match_fun || comm->match_fun(other_user_data, this_user_data, my_synchro))) {
55 XBT_DEBUG("Found a matching communication synchro %p", comm);
59 comm->mbox_cpy = comm->mbox;
64 XBT_DEBUG("Sorry, communication synchro %p does not match our needs:"
65 " its type is %d but we are looking for a comm of type %d (or maybe the filtering didn't match)",
66 comm, (int)comm->type, (int)type);
68 XBT_DEBUG("No matching communication synchro found");
72 /******************************************************************************/
73 /* Communication synchros */
74 /******************************************************************************/
75 XBT_PRIVATE void simcall_HANDLER_comm_send(smx_simcall_t simcall, smx_actor_t src, smx_mailbox_t mbox,
76 double task_size, double rate,
77 void *src_buff, size_t src_buff_size,
78 int (*match_fun)(void *, void *,smx_activity_t),
79 void (*copy_data_fun)(smx_activity_t, void*, size_t),
80 void *data, double timeout){
81 smx_activity_t comm = simcall_HANDLER_comm_isend(simcall, src, mbox, task_size, rate,
82 src_buff, src_buff_size, match_fun, nullptr, copy_data_fun,
84 SIMCALL_SET_MC_VALUE(simcall, 0);
85 simcall_HANDLER_comm_wait(simcall, comm, timeout);
87 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_isend(smx_simcall_t simcall, smx_actor_t src_proc, smx_mailbox_t mbox,
88 double task_size, double rate,
89 void *src_buff, size_t src_buff_size,
90 int (*match_fun)(void *, void *,smx_activity_t),
91 void (*clean_fun)(void *), // used to free the synchro in case of problem after a detached send
92 void (*copy_data_fun)(smx_activity_t, void*, size_t),// used to copy data if not default one
93 void *data, int detached)
95 XBT_DEBUG("send from %p", mbox);
97 /* Prepare a synchro describing us, so that it gets passed to the user-provided filter of other side */
98 simgrid::kernel::activity::CommImplPtr this_comm =
99 simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_SEND));
101 /* Look for communication synchro matching our needs. We also provide a description of
102 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
104 * If it is not found then push our communication into the rendez-vous point */
105 simgrid::kernel::activity::CommImplPtr other_comm =
106 _find_matching_comm(&mbox->comm_queue, SIMIX_COMM_RECEIVE, match_fun, data, this_comm, /*remove_matching*/ true);
108 if (not other_comm) {
109 other_comm = this_comm;
111 if (mbox->permanent_receiver != nullptr) {
112 //this mailbox is for small messages, which have to be sent right now
113 other_comm->state = SIMIX_READY;
114 other_comm->dst_proc=mbox->permanent_receiver.get();
115 mbox->done_comm_queue.push_back(other_comm);
116 XBT_DEBUG("pushing a message into the permanent receive list %p, comm %p", mbox, other_comm);
119 mbox->push(other_comm);
122 XBT_DEBUG("Receive already pushed");
124 other_comm->state = SIMIX_READY;
125 other_comm->type = SIMIX_COMM_READY;
127 src_proc->comms.push_back(other_comm);
130 other_comm->detached = true;
131 other_comm->clean_fun = clean_fun;
133 other_comm->clean_fun = nullptr;
136 /* Setup the communication synchro */
137 other_comm->src_proc = src_proc;
138 other_comm->task_size = task_size;
139 other_comm->rate = rate;
140 other_comm->src_buff = src_buff;
141 other_comm->src_buff_size = src_buff_size;
142 other_comm->src_data = data;
144 other_comm->match_fun = match_fun;
145 other_comm->copy_data_fun = copy_data_fun;
148 if (MC_is_active() || MC_record_replay_is_active()) {
149 other_comm->state = SIMIX_RUNNING;
150 return (detached ? nullptr : other_comm);
153 SIMIX_comm_start(other_comm);
154 return (detached ? nullptr : other_comm);
157 XBT_PRIVATE void simcall_HANDLER_comm_recv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
158 void *dst_buff, size_t *dst_buff_size,
159 int (*match_fun)(void *, void *, smx_activity_t),
160 void (*copy_data_fun)(smx_activity_t, void*, size_t),
161 void *data, double timeout, double rate)
163 smx_activity_t comm = SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
164 SIMCALL_SET_MC_VALUE(simcall, 0);
165 simcall_HANDLER_comm_wait(simcall, comm, timeout);
168 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_irecv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
169 void *dst_buff, size_t *dst_buff_size,
170 int (*match_fun)(void *, void *, smx_activity_t),
171 void (*copy_data_fun)(smx_activity_t, void*, size_t),
172 void *data, double rate)
174 return SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
177 smx_activity_t SIMIX_comm_irecv(smx_actor_t dst_proc, smx_mailbox_t mbox, void *dst_buff, size_t *dst_buff_size,
178 int (*match_fun)(void *, void *, smx_activity_t),
179 void (*copy_data_fun)(smx_activity_t, void*, size_t), // used to copy data if not default one
180 void *data, double rate)
182 simgrid::kernel::activity::CommImplPtr this_synchro =
183 simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_RECEIVE));
184 XBT_DEBUG("recv from %p %p. this_synchro=%p", mbox, &mbox->comm_queue, this_synchro);
186 simgrid::kernel::activity::CommImplPtr other_comm;
187 //communication already done, get it inside the list of completed comms
188 if (mbox->permanent_receiver != nullptr && not mbox->done_comm_queue.empty()) {
190 XBT_DEBUG("We have a comm that has probably already been received, trying to match it, to skip the communication");
191 //find a match in the list of already received comms
192 other_comm = _find_matching_comm(&mbox->done_comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
193 /*remove_matching*/ true);
194 //if not found, assume the receiver came first, register it to the mailbox in the classical way
195 if (not other_comm) {
196 XBT_DEBUG("We have messages in the permanent receive list, but not the one we are looking for, pushing request into list");
197 other_comm = this_synchro;
198 mbox->push(this_synchro);
200 if (other_comm->surf_comm && other_comm->remains() < 1e-12) {
201 XBT_DEBUG("comm %p has been already sent, and is finished, destroy it",other_comm);
202 other_comm->state = SIMIX_DONE;
203 other_comm->type = SIMIX_COMM_DONE;
204 other_comm->mbox = nullptr;
208 /* Prepare a comm describing us, so that it gets passed to the user-provided filter of other side */
210 /* Look for communication activity matching our needs. We also provide a description of
211 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
213 * If it is not found then push our communication into the rendez-vous point */
214 other_comm = _find_matching_comm(&mbox->comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
215 /*remove_matching*/ true);
217 if (not other_comm) {
218 XBT_DEBUG("Receive pushed first %zu", mbox->comm_queue.size());
219 other_comm = this_synchro;
220 mbox->push(this_synchro);
222 XBT_DEBUG("Match my %p with the existing %p", this_synchro, other_comm);
224 other_comm->state = SIMIX_READY;
225 other_comm->type = SIMIX_COMM_READY;
227 dst_proc->comms.push_back(other_comm);
230 /* Setup communication synchro */
231 other_comm->dst_proc = dst_proc;
232 other_comm->dst_buff = dst_buff;
233 other_comm->dst_buff_size = dst_buff_size;
234 other_comm->dst_data = data;
236 if (rate > -1.0 && (other_comm->rate < 0.0 || rate < other_comm->rate))
237 other_comm->rate = rate;
239 other_comm->match_fun = match_fun;
240 other_comm->copy_data_fun = copy_data_fun;
242 if (MC_is_active() || MC_record_replay_is_active()) {
243 other_comm->state = SIMIX_RUNNING;
247 SIMIX_comm_start(other_comm);
251 smx_activity_t simcall_HANDLER_comm_iprobe(smx_simcall_t simcall, smx_mailbox_t mbox,
252 int type, int src, int tag,
253 int (*match_fun)(void *, void *, smx_activity_t),
255 return SIMIX_comm_iprobe(simcall->issuer, mbox, type, src, tag, match_fun, data);
258 smx_activity_t SIMIX_comm_iprobe(smx_actor_t dst_proc, smx_mailbox_t mbox, int type, int src,
259 int tag, int (*match_fun)(void *, void *, smx_activity_t), void *data)
261 XBT_DEBUG("iprobe from %p %p", mbox, &mbox->comm_queue);
262 simgrid::kernel::activity::CommImplPtr this_comm;
265 this_comm = simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_SEND));
266 smx_type = SIMIX_COMM_RECEIVE;
268 this_comm = simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl(SIMIX_COMM_RECEIVE));
269 smx_type = SIMIX_COMM_SEND;
271 smx_activity_t other_synchro=nullptr;
272 if (mbox->permanent_receiver != nullptr && not mbox->done_comm_queue.empty()) {
273 XBT_DEBUG("first check in the permanent recv mailbox, to see if we already got something");
274 other_synchro = _find_matching_comm(&mbox->done_comm_queue,
275 (e_smx_comm_type_t) smx_type, match_fun, data, this_comm,/*remove_matching*/false);
277 if (not other_synchro) {
278 XBT_DEBUG("check if we have more luck in the normal mailbox");
279 other_synchro = _find_matching_comm(&mbox->comm_queue,
280 (e_smx_comm_type_t) smx_type, match_fun, data, this_comm,/*remove_matching*/false);
283 return other_synchro;
286 void simcall_HANDLER_comm_wait(smx_simcall_t simcall, smx_activity_t synchro, double timeout)
288 /* Associate this simcall to the wait synchro */
289 XBT_DEBUG("simcall_HANDLER_comm_wait, %p", synchro);
291 synchro->simcalls.push_back(simcall);
292 simcall->issuer->waiting_synchro = synchro;
294 if (MC_is_active() || MC_record_replay_is_active()) {
295 int idx = SIMCALL_GET_MC_VALUE(simcall);
297 synchro->state = SIMIX_DONE;
299 /* If we reached this point, the wait simcall must have a timeout */
300 /* Otherwise it shouldn't be enabled and executed by the MC */
304 simgrid::kernel::activity::CommImplPtr comm =
305 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
306 if (comm->src_proc == simcall->issuer)
307 comm->state = SIMIX_SRC_TIMEOUT;
309 comm->state = SIMIX_DST_TIMEOUT;
312 SIMIX_comm_finish(synchro);
316 /* If the synchro has already finish perform the error handling, */
317 /* otherwise set up a waiting timeout on the right side */
318 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
319 SIMIX_comm_finish(synchro);
320 } 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 */
321 surf_action_t sleep = simcall->issuer->host->pimpl_cpu->sleep(timeout);
322 sleep->setData(&*synchro);
324 simgrid::kernel::activity::CommImplPtr comm =
325 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
326 if (simcall->issuer == comm->src_proc)
327 comm->src_timeout = sleep;
329 comm->dst_timeout = sleep;
333 void simcall_HANDLER_comm_test(smx_simcall_t simcall, smx_activity_t synchro)
335 simgrid::kernel::activity::CommImplPtr comm =
336 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
338 if (MC_is_active() || MC_record_replay_is_active()){
339 simcall_comm_test__set__result(simcall, comm->src_proc && comm->dst_proc);
340 if (simcall_comm_test__get__result(simcall)){
341 synchro->state = SIMIX_DONE;
342 synchro->simcalls.push_back(simcall);
343 SIMIX_comm_finish(synchro);
345 SIMIX_simcall_answer(simcall);
350 simcall_comm_test__set__result(simcall, (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING));
351 if (simcall_comm_test__get__result(simcall)) {
352 synchro->simcalls.push_back(simcall);
353 SIMIX_comm_finish(synchro);
355 SIMIX_simcall_answer(simcall);
359 void simcall_HANDLER_comm_testany(smx_simcall_t simcall, simgrid::kernel::activity::ActivityImplPtr comms[],
362 // The default result is -1 -- this means, "nothing is ready".
363 // It can be changed below, but only if something matches.
364 simcall_comm_testany__set__result(simcall, -1);
366 if (MC_is_active() || MC_record_replay_is_active()){
367 int idx = SIMCALL_GET_MC_VALUE(simcall);
369 SIMIX_simcall_answer(simcall);
371 simgrid::kernel::activity::ActivityImplPtr synchro = comms[idx];
372 simcall_comm_testany__set__result(simcall, idx);
373 synchro->simcalls.push_back(simcall);
374 synchro->state = SIMIX_DONE;
375 SIMIX_comm_finish(synchro);
380 for (std::size_t i = 0; i != count; ++i) {
381 simgrid::kernel::activity::ActivityImplPtr synchro = comms[i];
382 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
383 simcall_comm_testany__set__result(simcall, i);
384 synchro->simcalls.push_back(simcall);
385 SIMIX_comm_finish(synchro);
389 SIMIX_simcall_answer(simcall);
392 void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, xbt_dynar_t synchros, double timeout)
394 smx_activity_t synchro;
395 unsigned int cursor = 0;
397 if (MC_is_active() || MC_record_replay_is_active()){
399 xbt_die("Timeout not implemented for waitany in the model-checker");
400 int idx = SIMCALL_GET_MC_VALUE(simcall);
401 synchro = xbt_dynar_get_as(synchros, idx, smx_activity_t);
402 synchro->simcalls.push_back(simcall);
403 simcall_comm_waitany__set__result(simcall, idx);
404 synchro->state = SIMIX_DONE;
405 SIMIX_comm_finish(synchro);
410 simcall->timer = NULL;
412 simcall->timer = SIMIX_timer_set(SIMIX_get_clock() + timeout, [simcall]() {
413 SIMIX_waitany_remove_simcall_from_actions(simcall);
414 simcall_comm_waitany__set__result(simcall, -1);
415 SIMIX_simcall_answer(simcall);
419 xbt_dynar_foreach(synchros, cursor, synchro){
420 /* associate this simcall to the the synchro */
421 synchro->simcalls.push_back(simcall);
423 /* see if the synchro is already finished */
424 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING){
425 SIMIX_comm_finish(synchro);
431 void SIMIX_waitany_remove_simcall_from_actions(smx_simcall_t simcall)
433 smx_activity_t synchro;
434 unsigned int cursor = 0;
435 xbt_dynar_t synchros = simcall_comm_waitany__get__comms(simcall);
437 xbt_dynar_foreach(synchros, cursor, synchro) {
438 // Remove the first occurence of simcall:
439 auto i = boost::range::find(synchro->simcalls, simcall);
440 if (i != synchro->simcalls.end())
441 synchro->simcalls.erase(i);
446 * \brief Starts the simulation of a communication synchro.
447 * \param synchro the communication synchro
449 static inline void SIMIX_comm_start(smx_activity_t synchro)
451 simgrid::kernel::activity::CommImplPtr comm =
452 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
454 /* If both the sender and the receiver are already there, start the communication */
455 if (synchro->state == SIMIX_READY) {
457 simgrid::s4u::Host* sender = comm->src_proc->host;
458 simgrid::s4u::Host* receiver = comm->dst_proc->host;
460 comm->surf_comm = surf_network_model->communicate(sender, receiver, comm->task_size, comm->rate);
461 comm->surf_comm->setData(&*synchro);
462 comm->state = SIMIX_RUNNING;
464 XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p)", synchro, sender->cname(),
465 receiver->cname(), comm->surf_comm);
467 /* If a link is failed, detect it immediately */
468 if (comm->surf_comm->getState() == simgrid::surf::Action::State::failed) {
469 XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", sender->cname(),
471 comm->state = SIMIX_LINK_FAILURE;
475 /* If any of the process is suspend, create the synchro but stop its execution,
476 it will be restarted when the sender process resume */
477 if (SIMIX_process_is_suspended(comm->src_proc) || SIMIX_process_is_suspended(comm->dst_proc)) {
478 if (SIMIX_process_is_suspended(comm->src_proc))
479 XBT_DEBUG("The communication is suspended on startup because src (%s@%s) was suspended since it initiated the "
481 comm->src_proc->cname(), comm->src_proc->host->cname());
483 XBT_DEBUG("The communication is suspended on startup because dst (%s@%s) was suspended since it initiated the "
485 comm->dst_proc->cname(), comm->dst_proc->host->cname());
487 comm->surf_comm->suspend();
493 * \brief Answers the SIMIX simcalls associated to a communication synchro.
494 * \param synchro a finished communication synchro
496 void SIMIX_comm_finish(smx_activity_t synchro)
498 simgrid::kernel::activity::CommImplPtr comm =
499 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
501 while (not synchro->simcalls.empty()) {
502 smx_simcall_t simcall = synchro->simcalls.front();
503 synchro->simcalls.pop_front();
505 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
506 * list. Afterwards, get the position of the actual synchro in the waitany dynar and return it as the result of the
509 if (simcall->call == SIMCALL_NONE) //FIXME: maybe a better way to handle this case
510 continue; // if process handling comm is killed
511 if (simcall->call == SIMCALL_COMM_WAITANY) {
512 SIMIX_waitany_remove_simcall_from_actions(simcall);
513 if (simcall->timer) {
514 SIMIX_timer_remove(simcall->timer);
515 simcall->timer = nullptr;
517 if (not MC_is_active() && not MC_record_replay_is_active())
518 simcall_comm_waitany__set__result(simcall,
519 xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro));
522 /* If the synchro is still in a rendez-vous point then remove from it */
524 comm->mbox->remove(comm);
526 XBT_DEBUG("SIMIX_comm_finish: synchro state = %d", (int)synchro->state);
528 /* Check out for errors */
530 if (simcall->issuer->host->isOff()) {
531 simcall->issuer->context->iwannadie = 1;
532 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
534 switch (comm->state) {
537 XBT_DEBUG("Communication %p complete!", synchro);
538 SIMIX_comm_copy_data(synchro);
541 case SIMIX_SRC_TIMEOUT:
542 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of sender");
545 case SIMIX_DST_TIMEOUT:
546 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of receiver");
549 case SIMIX_SRC_HOST_FAILURE:
550 if (simcall->issuer == comm->src_proc)
551 simcall->issuer->context->iwannadie = 1;
552 // SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
554 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
557 case SIMIX_DST_HOST_FAILURE:
558 if (simcall->issuer == comm->dst_proc)
559 simcall->issuer->context->iwannadie = 1;
560 // SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
562 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
565 case SIMIX_LINK_FAILURE:
566 XBT_DEBUG("Link failure in synchro %p between '%s' and '%s': posting an exception to the issuer: %s (%p) "
568 synchro, comm->src_proc ? comm->src_proc->host->cname() : nullptr,
569 comm->dst_proc ? comm->dst_proc->host->cname() : nullptr, simcall->issuer->cname(), simcall->issuer,
571 if (comm->src_proc == simcall->issuer) {
572 XBT_DEBUG("I'm source");
573 } else if (comm->dst_proc == simcall->issuer) {
574 XBT_DEBUG("I'm dest");
576 XBT_DEBUG("I'm neither source nor dest");
578 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Link failure");
582 if (simcall->issuer == comm->dst_proc)
583 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the sender");
585 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the receiver");
589 xbt_die("Unexpected synchro state in SIMIX_comm_finish: %d", (int)synchro->state);
593 /* if there is an exception during a waitany or a testany, indicate the position of the failed communication */
594 if (simcall->issuer->exception) {
595 // In order to modify the exception we have to rethrow it:
597 std::rethrow_exception(simcall->issuer->exception);
600 if (simcall->call == SIMCALL_COMM_WAITANY) {
601 e.value = xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro);
603 else if (simcall->call == SIMCALL_COMM_TESTANY) {
605 auto comms = simcall_comm_testany__get__comms(simcall);
606 auto count = simcall_comm_testany__get__count(simcall);
607 auto element = std::find(comms, comms + count, synchro);
608 if (element == comms + count)
611 e.value = element - comms;
613 simcall->issuer->exception = std::make_exception_ptr(e);
620 if (simcall->issuer->host->isOff()) {
621 simcall->issuer->context->iwannadie = 1;
624 simcall->issuer->waiting_synchro = nullptr;
625 simcall->issuer->comms.remove(synchro);
627 if(simcall->issuer == comm->src_proc){
629 comm->dst_proc->comms.remove(synchro);
631 else if(simcall->issuer == comm->dst_proc){
633 comm->src_proc->comms.remove(synchro);
636 comm->dst_proc->comms.remove(synchro);
637 comm->src_proc->comms.remove(synchro);
641 SIMIX_simcall_answer(simcall);
645 /******************************************************************************/
646 /* SIMIX_comm_copy_data callbacks */
647 /******************************************************************************/
648 static void (*SIMIX_comm_copy_data_callback) (smx_activity_t, void*, size_t) = &SIMIX_comm_copy_pointer_callback;
650 void SIMIX_comm_set_copy_data_callback(void (*callback) (smx_activity_t, void*, size_t))
652 SIMIX_comm_copy_data_callback = callback;
655 void SIMIX_comm_copy_pointer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
657 simgrid::kernel::activity::CommImplPtr comm =
658 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
660 xbt_assert((buff_size == sizeof(void *)), "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
661 *(void **) (comm->dst_buff) = buff;
664 void SIMIX_comm_copy_buffer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
666 simgrid::kernel::activity::CommImplPtr comm =
667 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
669 XBT_DEBUG("Copy the data over");
670 memcpy(comm->dst_buff, buff, buff_size);
671 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
673 comm->src_buff = nullptr;
678 * @brief Copy the communication data from the sender's buffer to the receiver's one
679 * @param synchro The communication
681 void SIMIX_comm_copy_data(smx_activity_t synchro)
683 simgrid::kernel::activity::CommImplPtr comm =
684 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
686 size_t buff_size = comm->src_buff_size;
687 /* If there is no data to copy then return */
688 if (not comm->src_buff || not comm->dst_buff || comm->copied)
691 XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", comm,
692 comm->src_proc ? comm->src_proc->host->cname() : "a finished process", comm->src_buff,
693 comm->dst_proc ? comm->dst_proc->host->cname() : "a finished process", comm->dst_buff, buff_size);
695 /* Copy at most dst_buff_size bytes of the message to receiver's buffer */
696 if (comm->dst_buff_size)
697 buff_size = MIN(buff_size, *(comm->dst_buff_size));
699 /* Update the receiver's buffer size to the copied amount */
700 if (comm->dst_buff_size)
701 *comm->dst_buff_size = buff_size;
704 if(comm->copy_data_fun)
705 comm->copy_data_fun (comm, comm->src_buff, buff_size);
707 SIMIX_comm_copy_data_callback (comm, comm->src_buff, buff_size);
710 /* Set the copied flag so we copy data only once */
711 /* (this function might be called from both communication ends) */