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>
12 #include "simgrid/s4u/Host.hpp"
15 #include "simgrid/s4u/Mailbox.hpp"
16 #include "src/mc/mc_replay.h"
17 #include "src/simix/smx_private.h"
18 #include "src/surf/cpu_interface.hpp"
19 #include "src/surf/surf_interface.hpp"
21 #include "src/kernel/activity/SynchroComm.hpp"
22 #include "src/surf/network_interface.hpp"
24 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_network, simix, "SIMIX network-related synchronization");
26 static void SIMIX_waitany_remove_simcall_from_actions(smx_simcall_t simcall);
27 static void SIMIX_comm_copy_data(smx_activity_t comm);
28 static void SIMIX_comm_start(smx_activity_t synchro);
29 static simgrid::kernel::activity::Comm*
30 _find_matching_comm(boost::circular_buffer_space_optimized<smx_activity_t>* deque, e_smx_comm_type_t type,
31 int (*match_fun)(void*, void*, smx_activity_t), void* user_data, smx_activity_t my_synchro,
32 bool remove_matching);
35 * \brief Checks if there is a communication activity queued in a deque matching our needs
36 * \param type The type of communication we are looking for (comm_send, comm_recv)
37 * \return The communication activity if found, nullptr otherwise
39 static simgrid::kernel::activity::Comm*
40 _find_matching_comm(boost::circular_buffer_space_optimized<smx_activity_t>* deque, e_smx_comm_type_t type,
41 int (*match_fun)(void*, void*, smx_activity_t), void* this_user_data, smx_activity_t my_synchro,
44 void* other_user_data = nullptr;
46 for(auto it = deque->begin(); it != deque->end(); it++){
47 smx_activity_t synchro = *it;
48 simgrid::kernel::activity::Comm* comm = static_cast<simgrid::kernel::activity::Comm*>(synchro);
50 if (comm->type == SIMIX_COMM_SEND) {
51 other_user_data = comm->src_data;
52 } else if (comm->type == SIMIX_COMM_RECEIVE) {
53 other_user_data = comm->dst_data;
55 if (comm->type == type && (!match_fun || match_fun(this_user_data, other_user_data, synchro)) &&
56 (not comm->match_fun || comm->match_fun(other_user_data, this_user_data, my_synchro))) {
57 XBT_DEBUG("Found a matching communication synchro %p", comm);
60 comm = static_cast<simgrid::kernel::activity::Comm*>(SIMIX_comm_ref(comm));
62 comm->mbox_cpy = comm->mbox;
67 XBT_DEBUG("Sorry, communication synchro %p does not match our needs:"
68 " its type is %d but we are looking for a comm of type %d (or maybe the filtering didn't match)",
69 comm, (int)comm->type, (int)type);
71 XBT_DEBUG("No matching communication synchro found");
75 /******************************************************************************/
76 /* Communication synchros */
77 /******************************************************************************/
78 XBT_PRIVATE void simcall_HANDLER_comm_send(smx_simcall_t simcall, smx_actor_t src, smx_mailbox_t mbox,
79 double task_size, double rate,
80 void *src_buff, size_t src_buff_size,
81 int (*match_fun)(void *, void *,smx_activity_t),
82 void (*copy_data_fun)(smx_activity_t, void*, size_t),
83 void *data, double timeout){
84 smx_activity_t comm = simcall_HANDLER_comm_isend(simcall, src, mbox, task_size, rate,
85 src_buff, src_buff_size, match_fun, nullptr, copy_data_fun,
87 SIMCALL_SET_MC_VALUE(simcall, 0);
88 simcall_HANDLER_comm_wait(simcall, comm, timeout);
90 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_isend(smx_simcall_t simcall, smx_actor_t src_proc, smx_mailbox_t mbox,
91 double task_size, double rate,
92 void *src_buff, size_t src_buff_size,
93 int (*match_fun)(void *, void *,smx_activity_t),
94 void (*clean_fun)(void *), // used to free the synchro in case of problem after a detached send
95 void (*copy_data_fun)(smx_activity_t, void*, size_t),// used to copy data if not default one
96 void *data, int detached)
98 XBT_DEBUG("send from %p", mbox);
100 /* Prepare a synchro describing us, so that it gets passed to the user-provided filter of other side */
101 simgrid::kernel::activity::Comm* this_comm = new simgrid::kernel::activity::Comm(SIMIX_COMM_SEND);
103 /* Look for communication synchro matching our needs. We also provide a description of
104 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
106 * If it is not found then push our communication into the rendez-vous point */
107 simgrid::kernel::activity::Comm* other_comm =
108 _find_matching_comm(&mbox->comm_queue, SIMIX_COMM_RECEIVE, match_fun, data, this_comm, /*remove_matching*/ true);
110 if (not other_comm) {
111 other_comm = this_comm;
113 if (mbox->permanent_receiver!=nullptr){
114 //this mailbox is for small messages, which have to be sent right now
115 other_comm->state = SIMIX_READY;
116 other_comm->dst_proc=mbox->permanent_receiver.get();
117 other_comm = static_cast<simgrid::kernel::activity::Comm*>(SIMIX_comm_ref(other_comm));
118 mbox->done_comm_queue.push_back(other_comm);
119 XBT_DEBUG("pushing a message into the permanent receive list %p, comm %p", mbox, &(other_comm));
122 mbox->push(this_comm);
125 XBT_DEBUG("Receive already pushed");
126 SIMIX_comm_unref(this_comm);
128 other_comm->state = SIMIX_READY;
129 other_comm->type = SIMIX_COMM_READY;
132 src_proc->comms.push_back(other_comm);
135 other_comm->detached = true;
136 other_comm->clean_fun = clean_fun;
138 other_comm->clean_fun = nullptr;
141 /* Setup the communication synchro */
142 other_comm->src_proc = src_proc;
143 other_comm->task_size = task_size;
144 other_comm->rate = rate;
145 other_comm->src_buff = src_buff;
146 other_comm->src_buff_size = src_buff_size;
147 other_comm->src_data = data;
149 other_comm->match_fun = match_fun;
150 other_comm->copy_data_fun = copy_data_fun;
153 if (MC_is_active() || MC_record_replay_is_active()) {
154 other_comm->state = SIMIX_RUNNING;
155 return (detached ? nullptr : other_comm);
158 SIMIX_comm_start(other_comm);
159 return (detached ? nullptr : other_comm);
162 XBT_PRIVATE void simcall_HANDLER_comm_recv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
163 void *dst_buff, size_t *dst_buff_size,
164 int (*match_fun)(void *, void *, smx_activity_t),
165 void (*copy_data_fun)(smx_activity_t, void*, size_t),
166 void *data, double timeout, double rate)
168 smx_activity_t comm = SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
169 SIMCALL_SET_MC_VALUE(simcall, 0);
170 simcall_HANDLER_comm_wait(simcall, comm, timeout);
173 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_irecv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
174 void *dst_buff, size_t *dst_buff_size,
175 int (*match_fun)(void *, void *, smx_activity_t),
176 void (*copy_data_fun)(smx_activity_t, void*, size_t),
177 void *data, double rate)
179 return SIMIX_comm_irecv(receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
182 smx_activity_t SIMIX_comm_irecv(smx_actor_t dst_proc, smx_mailbox_t mbox, void *dst_buff, size_t *dst_buff_size,
183 int (*match_fun)(void *, void *, smx_activity_t),
184 void (*copy_data_fun)(smx_activity_t, void*, size_t), // used to copy data if not default one
185 void *data, double rate)
187 XBT_DEBUG("recv from %p %p", mbox, &mbox->comm_queue);
188 simgrid::kernel::activity::Comm* this_synchro = new simgrid::kernel::activity::Comm(SIMIX_COMM_RECEIVE);
190 simgrid::kernel::activity::Comm* other_comm;
191 //communication already done, get it inside the list of completed comms
192 if (mbox->permanent_receiver != nullptr && not mbox->done_comm_queue.empty()) {
194 XBT_DEBUG("We have a comm that has probably already been received, trying to match it, to skip the communication");
195 //find a match in the list of already received comms
196 other_comm = _find_matching_comm(&mbox->done_comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
197 /*remove_matching*/ true);
198 //if not found, assume the receiver came first, register it to the mailbox in the classical way
199 if (not other_comm) {
200 XBT_DEBUG("We have messages in the permanent receive list, but not the one we are looking for, pushing request into list");
201 other_comm = this_synchro;
202 mbox->push(this_synchro);
204 if(other_comm->surf_comm && other_comm->remains() < 1e-12) {
205 XBT_DEBUG("comm %p has been already sent, and is finished, destroy it",other_comm);
206 other_comm->state = SIMIX_DONE;
207 other_comm->type = SIMIX_COMM_DONE;
208 other_comm->mbox = nullptr;
210 SIMIX_comm_unref(other_comm);
211 SIMIX_comm_unref(this_synchro);
214 /* Prepare a comm describing us, so that it gets passed to the user-provided filter of other side */
216 /* Look for communication activity matching our needs. We also provide a description of
217 * ourself so that the other side also gets a chance of choosing if it wants to match with us.
219 * If it is not found then push our communication into the rendez-vous point */
220 other_comm = _find_matching_comm(&mbox->comm_queue, SIMIX_COMM_SEND, match_fun, data, this_synchro,
221 /*remove_matching*/ true);
223 if (not other_comm) {
224 XBT_DEBUG("Receive pushed first %zu", mbox->comm_queue.size());
225 other_comm = this_synchro;
226 mbox->push(this_synchro);
228 SIMIX_comm_unref(this_synchro);
229 other_comm = static_cast<simgrid::kernel::activity::Comm*>(other_comm);
231 other_comm->state = SIMIX_READY;
232 other_comm->type = SIMIX_COMM_READY;
234 dst_proc->comms.push_back(other_comm);
237 /* Setup communication synchro */
238 other_comm->dst_proc = dst_proc;
239 other_comm->dst_buff = dst_buff;
240 other_comm->dst_buff_size = dst_buff_size;
241 other_comm->dst_data = data;
243 if (rate > -1.0 && (other_comm->rate < 0.0 || rate < other_comm->rate))
244 other_comm->rate = rate;
246 other_comm->match_fun = match_fun;
247 other_comm->copy_data_fun = copy_data_fun;
249 if (MC_is_active() || MC_record_replay_is_active()) {
250 other_comm->state = SIMIX_RUNNING;
254 SIMIX_comm_start(other_comm);
258 smx_activity_t simcall_HANDLER_comm_iprobe(smx_simcall_t simcall, smx_mailbox_t mbox,
259 int type, int src, int tag,
260 int (*match_fun)(void *, void *, smx_activity_t),
262 return SIMIX_comm_iprobe(simcall->issuer, mbox, type, src, tag, match_fun, data);
265 smx_activity_t SIMIX_comm_iprobe(smx_actor_t dst_proc, smx_mailbox_t mbox, int type, int src,
266 int tag, int (*match_fun)(void *, void *, smx_activity_t), void *data)
268 XBT_DEBUG("iprobe from %p %p", mbox, &mbox->comm_queue);
269 simgrid::kernel::activity::Comm* this_comm;
272 this_comm = new simgrid::kernel::activity::Comm(SIMIX_COMM_SEND);
273 smx_type = SIMIX_COMM_RECEIVE;
275 this_comm = new simgrid::kernel::activity::Comm(SIMIX_COMM_RECEIVE);
276 smx_type = SIMIX_COMM_SEND;
278 smx_activity_t other_synchro=nullptr;
279 if (mbox->permanent_receiver != nullptr && not mbox->done_comm_queue.empty()) {
280 XBT_DEBUG("first check in the permanent recv mailbox, to see if we already got something");
281 other_synchro = _find_matching_comm(&mbox->done_comm_queue,
282 (e_smx_comm_type_t) smx_type, match_fun, data, this_comm,/*remove_matching*/false);
284 if (not other_synchro) {
285 XBT_DEBUG("check if we have more luck in the normal mailbox");
286 other_synchro = _find_matching_comm(&mbox->comm_queue,
287 (e_smx_comm_type_t) smx_type, match_fun, data, this_comm,/*remove_matching*/false);
291 SIMIX_comm_unref(other_synchro);
293 SIMIX_comm_unref(this_comm);
294 return other_synchro;
297 void simcall_HANDLER_comm_wait(smx_simcall_t simcall, smx_activity_t synchro, double timeout)
299 /* Associate this simcall to the wait synchro */
300 XBT_DEBUG("simcall_HANDLER_comm_wait, %p", synchro);
302 synchro->simcalls.push_back(simcall);
303 simcall->issuer->waiting_synchro = synchro;
305 if (MC_is_active() || MC_record_replay_is_active()) {
306 int idx = SIMCALL_GET_MC_VALUE(simcall);
308 synchro->state = SIMIX_DONE;
310 /* If we reached this point, the wait simcall must have a timeout */
311 /* Otherwise it shouldn't be enabled and executed by the MC */
315 simgrid::kernel::activity::Comm *comm = static_cast<simgrid::kernel::activity::Comm*>(synchro);
316 if (comm->src_proc == simcall->issuer)
317 comm->state = SIMIX_SRC_TIMEOUT;
319 comm->state = SIMIX_DST_TIMEOUT;
322 SIMIX_comm_finish(synchro);
326 /* If the synchro has already finish perform the error handling, */
327 /* otherwise set up a waiting timeout on the right side */
328 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
329 SIMIX_comm_finish(synchro);
330 } 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 */
331 surf_action_t sleep = simcall->issuer->host->pimpl_cpu->sleep(timeout);
332 sleep->setData(synchro);
334 simgrid::kernel::activity::Comm *comm = static_cast<simgrid::kernel::activity::Comm*>(synchro);
335 if (simcall->issuer == comm->src_proc)
336 comm->src_timeout = sleep;
338 comm->dst_timeout = sleep;
342 void simcall_HANDLER_comm_test(smx_simcall_t simcall, smx_activity_t synchro)
344 simgrid::kernel::activity::Comm *comm = static_cast<simgrid::kernel::activity::Comm*>(synchro);
346 if (MC_is_active() || MC_record_replay_is_active()){
347 simcall_comm_test__set__result(simcall, comm->src_proc && comm->dst_proc);
348 if (simcall_comm_test__get__result(simcall)){
349 synchro->state = SIMIX_DONE;
350 synchro->simcalls.push_back(simcall);
351 SIMIX_comm_finish(synchro);
353 SIMIX_simcall_answer(simcall);
358 simcall_comm_test__set__result(simcall, (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING));
359 if (simcall_comm_test__get__result(simcall)) {
360 synchro->simcalls.push_back(simcall);
361 SIMIX_comm_finish(synchro);
363 SIMIX_simcall_answer(simcall);
367 void simcall_HANDLER_comm_testany(
368 smx_simcall_t simcall, simgrid::kernel::activity::ActivityImpl* comms[], size_t count)
370 // The default result is -1 -- this means, "nothing is ready".
371 // It can be changed below, but only if something matches.
372 simcall_comm_testany__set__result(simcall, -1);
374 if (MC_is_active() || MC_record_replay_is_active()){
375 int idx = SIMCALL_GET_MC_VALUE(simcall);
377 SIMIX_simcall_answer(simcall);
379 simgrid::kernel::activity::ActivityImpl* synchro = comms[idx];
380 simcall_comm_testany__set__result(simcall, idx);
381 synchro->simcalls.push_back(simcall);
382 synchro->state = SIMIX_DONE;
383 SIMIX_comm_finish(synchro);
388 for (std::size_t i = 0; i != count; ++i) {
389 simgrid::kernel::activity::ActivityImpl* synchro = comms[i];
390 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING) {
391 simcall_comm_testany__set__result(simcall, i);
392 synchro->simcalls.push_back(simcall);
393 SIMIX_comm_finish(synchro);
397 SIMIX_simcall_answer(simcall);
400 void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, xbt_dynar_t synchros, double timeout)
402 smx_activity_t synchro;
403 unsigned int cursor = 0;
405 if (MC_is_active() || MC_record_replay_is_active()){
407 xbt_die("Timeout not implemented for waitany in the model-checker");
408 int idx = SIMCALL_GET_MC_VALUE(simcall);
409 synchro = xbt_dynar_get_as(synchros, idx, smx_activity_t);
410 synchro->simcalls.push_back(simcall);
411 simcall_comm_waitany__set__result(simcall, idx);
412 synchro->state = SIMIX_DONE;
413 SIMIX_comm_finish(synchro);
418 simcall->timer = NULL;
420 simcall->timer = SIMIX_timer_set(SIMIX_get_clock() + timeout, [simcall]() {
421 SIMIX_waitany_remove_simcall_from_actions(simcall);
422 simcall_comm_waitany__set__result(simcall, -1);
423 SIMIX_simcall_answer(simcall);
427 xbt_dynar_foreach(synchros, cursor, synchro){
428 /* associate this simcall to the the synchro */
429 synchro->simcalls.push_back(simcall);
431 /* see if the synchro is already finished */
432 if (synchro->state != SIMIX_WAITING && synchro->state != SIMIX_RUNNING){
433 SIMIX_comm_finish(synchro);
439 void SIMIX_waitany_remove_simcall_from_actions(smx_simcall_t simcall)
441 smx_activity_t synchro;
442 unsigned int cursor = 0;
443 xbt_dynar_t synchros = simcall_comm_waitany__get__comms(simcall);
445 xbt_dynar_foreach(synchros, cursor, synchro) {
446 // Remove the first occurence of simcall:
447 auto i = boost::range::find(synchro->simcalls, simcall);
448 if (i != synchro->simcalls.end())
449 synchro->simcalls.erase(i);
454 * \brief Starts the simulation of a communication synchro.
455 * \param synchro the communication synchro
457 static inline void SIMIX_comm_start(smx_activity_t synchro)
459 simgrid::kernel::activity::Comm *comm = static_cast<simgrid::kernel::activity::Comm*>(synchro);
461 /* If both the sender and the receiver are already there, start the communication */
462 if (synchro->state == SIMIX_READY) {
464 simgrid::s4u::Host* sender = comm->src_proc->host;
465 simgrid::s4u::Host* receiver = comm->dst_proc->host;
467 XBT_DEBUG("Starting communication %p from '%s' to '%s'", synchro, sender->cname(), receiver->cname());
469 comm->surf_comm = surf_network_model->communicate(sender, receiver, comm->task_size, comm->rate);
470 comm->surf_comm->setData(synchro);
471 comm->state = SIMIX_RUNNING;
473 /* If a link is failed, detect it immediately */
474 if (comm->surf_comm->getState() == simgrid::surf::Action::State::failed) {
475 XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", sender->cname(),
477 comm->state = SIMIX_LINK_FAILURE;
481 /* If any of the process is suspend, create the synchro but stop its execution,
482 it will be restarted when the sender process resume */
483 if (SIMIX_process_is_suspended(comm->src_proc) || SIMIX_process_is_suspended(comm->dst_proc)) {
484 if (SIMIX_process_is_suspended(comm->src_proc))
485 XBT_DEBUG("The communication is suspended on startup because src (%s@%s) was suspended since it initiated the "
487 comm->src_proc->cname(), comm->src_proc->host->cname());
489 XBT_DEBUG("The communication is suspended on startup because dst (%s@%s) was suspended since it initiated the "
491 comm->dst_proc->cname(), comm->dst_proc->host->cname());
493 comm->surf_comm->suspend();
499 * \brief Answers the SIMIX simcalls associated to a communication synchro.
500 * \param synchro a finished communication synchro
502 void SIMIX_comm_finish(smx_activity_t synchro)
504 simgrid::kernel::activity::Comm *comm = static_cast<simgrid::kernel::activity::Comm*>(synchro);
506 while (not synchro->simcalls.empty()) {
507 smx_simcall_t simcall = synchro->simcalls.front();
508 synchro->simcalls.pop_front();
510 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
511 * list. Afterwards, get the position of the actual synchro in the waitany dynar and return it as the result of the
514 if (simcall->call == SIMCALL_NONE) //FIXME: maybe a better way to handle this case
515 continue; // if process handling comm is killed
516 if (simcall->call == SIMCALL_COMM_WAITANY) {
517 SIMIX_waitany_remove_simcall_from_actions(simcall);
518 if (simcall->timer) {
519 SIMIX_timer_remove(simcall->timer);
520 simcall->timer = nullptr;
522 if (not MC_is_active() && not MC_record_replay_is_active())
523 simcall_comm_waitany__set__result(simcall,
524 xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro));
527 /* If the synchro is still in a rendez-vous point then remove from it */
529 comm->mbox->remove(synchro);
531 XBT_DEBUG("SIMIX_comm_finish: synchro state = %d", (int)synchro->state);
533 /* Check out for errors */
535 if (simcall->issuer->host->isOff()) {
536 simcall->issuer->context->iwannadie = 1;
537 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
539 switch (synchro->state) {
542 XBT_DEBUG("Communication %p complete!", synchro);
543 SIMIX_comm_copy_data(synchro);
546 case SIMIX_SRC_TIMEOUT:
547 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of sender");
550 case SIMIX_DST_TIMEOUT:
551 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Communication timeouted because of receiver");
554 case SIMIX_SRC_HOST_FAILURE:
555 if (simcall->issuer == comm->src_proc)
556 simcall->issuer->context->iwannadie = 1;
557 // SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
559 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
562 case SIMIX_DST_HOST_FAILURE:
563 if (simcall->issuer == comm->dst_proc)
564 simcall->issuer->context->iwannadie = 1;
565 // SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
567 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Remote peer failed");
570 case SIMIX_LINK_FAILURE:
573 "Link failure in synchro %p between '%s' and '%s': posting an exception to the issuer: %s (%p) detached:%d",
574 synchro, comm->src_proc ? comm->src_proc->host->cname() : nullptr,
575 comm->dst_proc ? comm->dst_proc->host->cname() : nullptr, simcall->issuer->cname(), simcall->issuer,
577 if (comm->src_proc == simcall->issuer) {
578 XBT_DEBUG("I'm source");
579 } else if (comm->dst_proc == simcall->issuer) {
580 XBT_DEBUG("I'm dest");
582 XBT_DEBUG("I'm neither source nor dest");
584 SMX_EXCEPTION(simcall->issuer, network_error, 0, "Link failure");
588 if (simcall->issuer == comm->dst_proc)
589 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the sender");
591 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Communication canceled by the receiver");
595 xbt_die("Unexpected synchro state in SIMIX_comm_finish: %d", (int)synchro->state);
599 /* if there is an exception during a waitany or a testany, indicate the position of the failed communication */
600 if (simcall->issuer->exception) {
601 // In order to modify the exception we have to rethrow it:
603 std::rethrow_exception(simcall->issuer->exception);
606 if (simcall->call == SIMCALL_COMM_WAITANY) {
607 e.value = xbt_dynar_search(simcall_comm_waitany__get__comms(simcall), &synchro);
609 else if (simcall->call == SIMCALL_COMM_TESTANY) {
611 auto comms = simcall_comm_testany__get__comms(simcall);
612 auto count = simcall_comm_testany__get__count(simcall);
613 auto element = std::find(comms, comms + count, synchro);
614 if (element == comms + count)
617 e.value = element - comms;
619 simcall->issuer->exception = std::make_exception_ptr(e);
626 if (simcall->issuer->host->isOff()) {
627 simcall->issuer->context->iwannadie = 1;
630 simcall->issuer->waiting_synchro = nullptr;
631 simcall->issuer->comms.remove(synchro);
633 if(simcall->issuer == comm->src_proc){
635 comm->dst_proc->comms.remove(synchro);
637 else if(simcall->issuer == comm->dst_proc){
639 comm->src_proc->comms.remove(synchro);
642 comm->dst_proc->comms.remove(synchro);
643 comm->src_proc->comms.remove(synchro);
647 SIMIX_simcall_answer(simcall);
651 /******************************************************************************/
652 /* SIMIX_comm_copy_data callbacks */
653 /******************************************************************************/
654 static void (*SIMIX_comm_copy_data_callback) (smx_activity_t, void*, size_t) = &SIMIX_comm_copy_pointer_callback;
656 void SIMIX_comm_set_copy_data_callback(void (*callback) (smx_activity_t, void*, size_t))
658 SIMIX_comm_copy_data_callback = callback;
661 void SIMIX_comm_copy_pointer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
663 simgrid::kernel::activity::Comm *comm = static_cast<simgrid::kernel::activity::Comm*>(synchro);
665 xbt_assert((buff_size == sizeof(void *)), "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
666 *(void **) (comm->dst_buff) = buff;
669 void SIMIX_comm_copy_buffer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
671 simgrid::kernel::activity::Comm *comm = static_cast<simgrid::kernel::activity::Comm*>(synchro);
673 XBT_DEBUG("Copy the data over");
674 memcpy(comm->dst_buff, buff, buff_size);
675 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
677 comm->src_buff = nullptr;
682 * @brief Copy the communication data from the sender's buffer to the receiver's one
683 * @param synchro The communication
685 void SIMIX_comm_copy_data(smx_activity_t synchro)
687 simgrid::kernel::activity::Comm *comm = static_cast<simgrid::kernel::activity::Comm*>(synchro);
689 size_t buff_size = comm->src_buff_size;
690 /* If there is no data to copy then return */
691 if (not comm->src_buff || not comm->dst_buff || comm->copied)
694 XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", comm,
695 comm->src_proc ? comm->src_proc->host->cname() : "a finished process", comm->src_buff,
696 comm->dst_proc ? comm->dst_proc->host->cname() : "a finished process", comm->dst_buff, buff_size);
698 /* Copy at most dst_buff_size bytes of the message to receiver's buffer */
699 if (comm->dst_buff_size)
700 buff_size = MIN(buff_size, *(comm->dst_buff_size));
702 /* Update the receiver's buffer size to the copied amount */
703 if (comm->dst_buff_size)
704 *comm->dst_buff_size = buff_size;
707 if(comm->copy_data_fun)
708 comm->copy_data_fun (comm, comm->src_buff, buff_size);
710 SIMIX_comm_copy_data_callback (comm, comm->src_buff, buff_size);
713 /* Set the copied flag so we copy data only once */
714 /* (this function might be called from both communication ends) */
718 /** Increase the refcount for this comm */
719 smx_activity_t SIMIX_comm_ref(smx_activity_t comm)
722 intrusive_ptr_add_ref(comm);
726 /** Decrease the refcount for this comm */
727 void SIMIX_comm_unref(smx_activity_t comm)
730 intrusive_ptr_release(comm);