src/s4u/s4u_Comm.cpp

   1 /* Copyright (c) 2006-2023. The SimGrid Team. All rights reserved.          */
   2
   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. */
   5
   6 #include <cmath>
   7 #include <simgrid/Exception.hpp>
   8 #include <simgrid/comm.h>
   9 #include <simgrid/s4u/ActivitySet.hpp>
  10 #include <simgrid/s4u/Comm.hpp>
  11 #include <simgrid/s4u/Engine.hpp>
  12 #include <simgrid/s4u/Mailbox.hpp>
  13
  14 #include "src/kernel/activity/CommImpl.hpp"
  15 #include "src/kernel/actor/ActorImpl.hpp"
  16 #include "src/kernel/actor/SimcallObserver.hpp"
  17 #include "src/mc/mc.h"
  18 #include "src/mc/mc_replay.hpp"
  19
  20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_comm, s4u_activity, "S4U asynchronous communications");
  21
  22 namespace simgrid::s4u {
  23 xbt::signal<void(Comm const&)> Comm::on_send;
  24 xbt::signal<void(Comm const&)> Comm::on_recv;
  25
  26 CommPtr Comm::set_copy_data_callback(const std::function<void(kernel::activity::CommImpl*, void*, size_t)>& callback)
  27 {
  28   copy_data_function_ = callback;
  29   return this;
  30 }
  31
  32 void Comm::copy_buffer_callback(kernel::activity::CommImpl* comm, void* buff,
  33                                 size_t buff_size) // XBT_ATTRIB_DEPRECATED_v338
  34 {
  35   XBT_DEBUG("Copy the data over");
  36   memcpy(comm->dst_buff_, buff, buff_size);
  37   if (comm->is_detached()) { // if this is a detached send, the source buffer was duplicated by SMPI sender to make the
  38                              // original buffer available to the application ASAP
  39     xbt_free(buff);
  40     comm->src_buff_ = nullptr;
  41   }
  42 }
  43
  44 void Comm::copy_pointer_callback(kernel::activity::CommImpl* comm, void* buff,
  45                                  size_t buff_size) // XBT_ATTRIB_DEPRECATED_v338
  46 {
  47   xbt_assert((buff_size == sizeof(void*)), "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
  48   *(void**)(comm->dst_buff_) = buff;
  49 }
  50
  51 Comm::~Comm()
  52 {
  53   if (state_ == State::STARTED && not detached_ &&
  54       (pimpl_ == nullptr || pimpl_->get_state() == kernel::activity::State::RUNNING)) {
  55     XBT_INFO("Comm %p freed before its completion. Did you forget to detach it? (state: %s)", this, get_state_str());
  56     if (pimpl_ != nullptr)
  57       XBT_INFO("pimpl_->state: %s", pimpl_->get_state_str());
  58     else
  59       XBT_INFO("pimpl_ is null");
  60     xbt_backtrace_display_current();
  61   }
  62 }
  63
  64 void Comm::send(kernel::actor::ActorImpl* sender, const Mailbox* mbox, double task_size, double rate, void* src_buff,
  65                 size_t src_buff_size,
  66                 const std::function<bool(void*, void*, simgrid::kernel::activity::CommImpl*)>& match_fun,
  67                 const std::function<void(simgrid::kernel::activity::CommImpl*, void*, size_t)>& copy_data_fun,
  68                 void* data, double timeout)
  69 {
  70   /* checking for infinite values */
  71   xbt_assert(std::isfinite(task_size), "task_size is not finite!");
  72   xbt_assert(std::isfinite(rate), "rate is not finite!");
  73   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
  74
  75   xbt_assert(mbox, "No rendez-vous point defined for send");
  76
  77   if (MC_is_active() || MC_record_replay_is_active()) {
  78     /* the model-checker wants two separate simcalls, and wants comm to be nullptr during the simcall */
  79     simgrid::kernel::activity::ActivityImplPtr comm = nullptr;
  80
  81     simgrid::kernel::actor::CommIsendSimcall send_observer{
  82         sender,        mbox->get_impl(), task_size, rate,          static_cast<unsigned char*>(src_buff),
  83         src_buff_size, match_fun,        nullptr,   copy_data_fun, data,
  84         false,         "Isend"};
  85     comm = simgrid::kernel::actor::simcall_answered(
  86         [&send_observer] { return simgrid::kernel::activity::CommImpl::isend(&send_observer); }, &send_observer);
  87
  88     if (simgrid::kernel::actor::ActivityWaitSimcall wait_observer{sender, comm.get(), timeout, "Wait"};
  89         simgrid::kernel::actor::simcall_blocking(
  90             [&wait_observer] {
  91               wait_observer.get_activity()->wait_for(wait_observer.get_issuer(), wait_observer.get_timeout());
  92             },
  93             &wait_observer)) {
  94       throw simgrid::TimeoutException(XBT_THROW_POINT, "Timeouted");
  95     }
  96     comm = nullptr;
  97   } else {
  98     simgrid::kernel::actor::CommIsendSimcall observer(sender, mbox->get_impl(), task_size, rate,
  99                                                       static_cast<unsigned char*>(src_buff), src_buff_size, match_fun,
 100                                                       nullptr, copy_data_fun, data, false, "Isend");
 101     simgrid::kernel::actor::simcall_blocking([&observer, timeout] {
 102       simgrid::kernel::activity::ActivityImplPtr comm = simgrid::kernel::activity::CommImpl::isend(&observer);
 103       comm->wait_for(observer.get_issuer(), timeout);
 104     });
 105   }
 106 }
 107
 108 void Comm::recv(kernel::actor::ActorImpl* receiver, const Mailbox* mbox, void* dst_buff, size_t* dst_buff_size,
 109                 const std::function<bool(void*, void*, simgrid::kernel::activity::CommImpl*)>& match_fun,
 110                 const std::function<void(simgrid::kernel::activity::CommImpl*, void*, size_t)>& copy_data_fun,
 111                 void* data, double timeout, double rate)
 112 {
 113   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
 114   xbt_assert(mbox, "No rendez-vous point defined for recv");
 115
 116   if (MC_is_active() || MC_record_replay_is_active()) {
 117     /* the model-checker wants two separate simcalls, and wants comm to be nullptr during the simcall */
 118     simgrid::kernel::activity::ActivityImplPtr comm = nullptr;
 119
 120     simgrid::kernel::actor::CommIrecvSimcall observer{receiver,
 121                                                       mbox->get_impl(),
 122                                                       static_cast<unsigned char*>(dst_buff),
 123                                                       dst_buff_size,
 124                                                       match_fun,
 125                                                       copy_data_fun,
 126                                                       data,
 127                                                       rate,
 128                                                       "Irecv"};
 129     comm = simgrid::kernel::actor::simcall_answered(
 130         [&observer] { return simgrid::kernel::activity::CommImpl::irecv(&observer); }, &observer);
 131
 132     if (simgrid::kernel::actor::ActivityWaitSimcall wait_observer{receiver, comm.get(), timeout, "wait"};
 133         simgrid::kernel::actor::simcall_blocking(
 134             [&wait_observer] {
 135               wait_observer.get_activity()->wait_for(wait_observer.get_issuer(), wait_observer.get_timeout());
 136             },
 137             &wait_observer)) {
 138       throw simgrid::TimeoutException(XBT_THROW_POINT, "Timeouted");
 139     }
 140     comm = nullptr;
 141   } else {
 142     simgrid::kernel::actor::CommIrecvSimcall observer(receiver, mbox->get_impl(), static_cast<unsigned char*>(dst_buff),
 143                                                       dst_buff_size, match_fun, copy_data_fun, data, rate, "Irecv");
 144     simgrid::kernel::actor::simcall_blocking([&observer, timeout] {
 145       simgrid::kernel::activity::ActivityImplPtr comm = simgrid::kernel::activity::CommImpl::irecv(&observer);
 146       comm->wait_for(observer.get_issuer(), timeout);
 147     });
 148   }
 149 }
 150
 151 CommPtr Comm::sendto_init()
 152 {
 153   CommPtr res(new Comm());
 154   res->pimpl_ = kernel::activity::CommImplPtr(new kernel::activity::CommImpl());
 155   boost::static_pointer_cast<kernel::activity::CommImpl>(res->pimpl_)->detach();
 156   res->sender_ = kernel::actor::ActorImpl::self();
 157   return res;
 158 }
 159
 160 CommPtr Comm::sendto_init(Host* from, Host* to)
 161 {
 162   auto res = Comm::sendto_init()->set_source(from)->set_destination(to);
 163   res->set_state(State::STARTING);
 164   return res;
 165 }
 166
 167 CommPtr Comm::sendto_async(Host* from, Host* to, uint64_t simulated_size_in_bytes)
 168 {
 169   return Comm::sendto_init()->set_payload_size(simulated_size_in_bytes)->set_source(from)->set_destination(to);
 170 }
 171
 172 void Comm::sendto(Host* from, Host* to, uint64_t simulated_size_in_bytes)
 173 {
 174   sendto_async(from, to, simulated_size_in_bytes)->wait();
 175 }
 176
 177 CommPtr Comm::set_source(Host* from)
 178 {
 179   xbt_assert(state_ == State::INITED || state_ == State::STARTING,
 180              "Cannot change the source of a Comm once it's started (state: %s)", to_c_str(state_));
 181   boost::static_pointer_cast<kernel::activity::CommImpl>(pimpl_)->set_source(from);
 182   // Setting 'source' may allow to start the activity, let's try
 183   if (state_ == State::STARTING && remains_ <= 0)
 184     XBT_DEBUG("This communication has a payload size of 0 byte. It cannot start yet");
 185   else
 186     start();
 187
 188   return this;
 189 }
 190 Host* Comm::get_source() const
 191 {
 192   return pimpl_ ? boost::static_pointer_cast<kernel::activity::CommImpl>(pimpl_)->get_source() : nullptr;
 193 }
 194
 195 CommPtr Comm::set_destination(Host* to)
 196 {
 197   xbt_assert(state_ == State::INITED || state_ == State::STARTING,
 198              "Cannot change the destination of a Comm once it's started (state: %s)", to_c_str(state_));
 199   boost::static_pointer_cast<kernel::activity::CommImpl>(pimpl_)->set_destination(to);
 200   // Setting 'destination' may allow to start the activity, let's try
 201   if (state_ == State::STARTING && remains_ <= 0)
 202     XBT_DEBUG("This communication has a payload size of 0 byte. It cannot start yet");
 203   else
 204     start();
 205
 206   return this;
 207 }
 208
 209 Host* Comm::get_destination() const
 210 {
 211   return pimpl_ ? boost::static_pointer_cast<kernel::activity::CommImpl>(pimpl_)->get_destination() : nullptr;
 212 }
 213
 214 CommPtr Comm::set_rate(double rate)
 215 {
 216   xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
 217              __func__);
 218   rate_ = rate;
 219   return this;
 220 }
 221
 222 CommPtr Comm::set_mailbox(Mailbox* mailbox)
 223 {
 224   xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
 225              __func__);
 226   mailbox_ = mailbox;
 227   return this;
 228 }
 229
 230 CommPtr Comm::set_src_data(void* buff)
 231 {
 232   xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
 233              __func__);
 234   xbt_assert(dst_buff_ == nullptr, "Cannot set the src and dst buffers at the same time");
 235   src_buff_ = buff;
 236   return this;
 237 }
 238
 239 CommPtr Comm::set_src_data_size(size_t size)
 240 {
 241   xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
 242              __func__);
 243   src_buff_size_ = size;
 244   return this;
 245 }
 246
 247 CommPtr Comm::set_src_data(void* buff, size_t size)
 248 {
 249   xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
 250              __func__);
 251
 252   xbt_assert(dst_buff_ == nullptr, "Cannot set the src and dst buffers at the same time");
 253   src_buff_      = buff;
 254   src_buff_size_ = size;
 255   return this;
 256 }
 257
 258 CommPtr Comm::set_dst_data(void** buff)
 259 {
 260   xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
 261              __func__);
 262   xbt_assert(src_buff_ == nullptr, "Cannot set the src and dst buffers at the same time");
 263   dst_buff_ = buff;
 264   return this;
 265 }
 266
 267 CommPtr Comm::set_dst_data(void** buff, size_t size)
 268 {
 269   xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
 270              __func__);
 271
 272   xbt_assert(src_buff_ == nullptr, "Cannot set the src and dst buffers at the same time");
 273   dst_buff_      = buff;
 274   dst_buff_size_ = size;
 275   return this;
 276 }
 277
 278 CommPtr Comm::set_payload_size(uint64_t bytes)
 279 {
 280   set_remaining(bytes);
 281   if (pimpl_) {
 282     boost::static_pointer_cast<kernel::activity::CommImpl>(pimpl_)->set_size(bytes);
 283   }
 284   return this;
 285 }
 286
 287 void* Comm::get_payload() const
 288 {
 289   xbt_assert(get_state() == State::FINISHED,
 290              "You can only retrieve the payload of a communication that gracefully terminated, but its state is %s.",
 291              get_state_str());
 292   return static_cast<kernel::activity::CommImpl*>(pimpl_.get())->payload_;
 293 }
 294
 295 Actor* Comm::get_sender() const
 296 {
 297   kernel::actor::ActorImplPtr sender = nullptr;
 298   if (pimpl_)
 299     sender = boost::static_pointer_cast<kernel::activity::CommImpl>(pimpl_)->src_actor_;
 300   return sender ? sender->get_ciface() : nullptr;
 301 }
 302
 303 Actor* Comm::get_receiver() const
 304 {
 305   kernel::actor::ActorImplPtr receiver = nullptr;
 306   if (pimpl_)
 307     receiver = boost::static_pointer_cast<kernel::activity::CommImpl>(pimpl_)->dst_actor_;
 308   return receiver ? receiver->get_ciface() : nullptr;
 309 }
 310
 311 bool Comm::is_assigned() const
 312 {
 313   return (pimpl_ && boost::static_pointer_cast<kernel::activity::CommImpl>(pimpl_)->is_assigned()) ||
 314          mailbox_ != nullptr;
 315 }
 316
 317 Comm* Comm::do_start()
 318 {
 319   xbt_assert(get_state() == State::INITED || get_state() == State::STARTING,
 320              "You cannot use %s() once your communication started (not implemented)", __func__);
 321
 322   auto myself = kernel::actor::ActorImpl::self();
 323
 324   if (get_source() != nullptr || get_destination() != nullptr) {
 325     xbt_assert(is_assigned(), "When either from_ or to_ is specified, both must be.");
 326     xbt_assert(src_buff_ == nullptr && dst_buff_ == nullptr,
 327                "Direct host-to-host communications cannot carry any data.");
 328     XBT_DEBUG("host-to-host Comm. Pimpl already created and set, just start it.");
 329     kernel::actor::simcall_answered([this] {
 330       pimpl_->set_state(kernel::activity::State::READY);
 331       boost::static_pointer_cast<kernel::activity::CommImpl>(pimpl_)->start();
 332     });
 333     fire_on_start();
 334     fire_on_this_start();
 335   } else if (myself == sender_) {
 336     on_send(*this);
 337     on_this_send(*this);
 338     kernel::actor::CommIsendSimcall observer{sender_,
 339                                              mailbox_->get_impl(),
 340                                              remains_,
 341                                              rate_,
 342                                              static_cast<unsigned char*>(src_buff_),
 343                                              src_buff_size_,
 344                                              match_fun_,
 345                                              clean_fun_,
 346                                              copy_data_function_,
 347                                              get_data<void>(),
 348                                              detached_,
 349                                              "Isend"};
 350     pimpl_ = kernel::actor::simcall_answered([&observer] { return kernel::activity::CommImpl::isend(&observer); },
 351                                              &observer);
 352   } else if (myself == receiver_) {
 353     xbt_assert(not detached_, "Receive cannot be detached");
 354     on_recv(*this);
 355     on_this_recv(*this);
 356     kernel::actor::CommIrecvSimcall observer{receiver_,
 357                                              mailbox_->get_impl(),
 358                                              static_cast<unsigned char*>(dst_buff_),
 359                                              &dst_buff_size_,
 360                                              match_fun_,
 361                                              copy_data_function_,
 362                                              get_data<void>(),
 363                                              rate_,
 364                                              "Irecv"};
 365     pimpl_ = kernel::actor::simcall_answered([&observer] { return kernel::activity::CommImpl::irecv(&observer); },
 366                                              &observer);
 367   } else {
 368     xbt_die("Cannot start a communication before specifying whether we are the sender or the receiver");
 369   }
 370
 371   if (suspended_)
 372     pimpl_->suspend();
 373
 374   if (not detached_) {
 375     pimpl_->set_iface(this);
 376     pimpl_->set_actor(sender_);
 377     // Only throw the signal when both sides are here and the status is READY
 378     if (pimpl_->get_state() != kernel::activity::State::WAITING) {
 379       fire_on_start();
 380       fire_on_this_start();
 381     }
 382   }
 383
 384   state_ = State::STARTED;
 385   return this;
 386 }
 387
 388 Comm* Comm::detach()
 389 {
 390   xbt_assert(state_ == State::INITED || state_ == State::STARTING,
 391              "You cannot use %s() once your communication is %s (not implemented)", __func__, get_state_str());
 392   xbt_assert(dst_buff_ == nullptr && dst_buff_size_ == 0, "You can only detach sends, not recvs");
 393   detached_ = true;
 394   start();
 395   return this;
 396 }
 397
 398 ssize_t Comm::test_any(const std::vector<CommPtr>& comms) // XBT_ATTRIB_DEPRECATED_v339
 399 {
 400   std::vector<kernel::activity::ActivityImpl*> ractivities(comms.size());
 401   std::transform(begin(comms), end(comms), begin(ractivities), [](const CommPtr& act) { return act->pimpl_.get(); });
 402
 403   kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
 404   kernel::actor::ActivityTestanySimcall observer{issuer, ractivities, "test_any"};
 405   ssize_t changed_pos = kernel::actor::simcall_answered(
 406       [&observer] {
 407         return kernel::activity::ActivityImpl::test_any(observer.get_issuer(), observer.get_activities());
 408       },
 409       &observer);
 410   if (changed_pos != -1)
 411     comms.at(changed_pos)->complete(State::FINISHED);
 412   return changed_pos;
 413 }
 414
 415 /** @brief Block the calling actor until the communication is finished, or until timeout
 416  *
 417  * On timeout, an exception is thrown and the communication is invalidated.
 418  *
 419  * @param timeout the amount of seconds to wait for the comm termination.
 420  *                Negative values denote infinite wait times. 0 as a timeout returns immediately. */
 421 Comm* Comm::wait_for(double timeout)
 422 {
 423   XBT_DEBUG("Calling Comm::wait_for with state %s", get_state_str());
 424   kernel::actor::ActorImpl* issuer = nullptr;
 425   switch (state_) {
 426     case State::FINISHED:
 427       break;
 428     case State::FAILED:
 429       throw NetworkFailureException(XBT_THROW_POINT, "Cannot wait for a failed communication");
 430     case State::INITED:
 431     case State::STARTING: // It's not started yet. Do it in one simcall if it's a regular communication
 432       if (get_source() != nullptr || get_destination() != nullptr) {
 433         return start()->wait_for(timeout); // In the case of host2host comm, do it in two simcalls
 434       } else if (src_buff_ != nullptr) {
 435         on_send(*this);
 436         on_this_send(*this);
 437         send(sender_, mailbox_, remains_, rate_, src_buff_, src_buff_size_, match_fun_, copy_data_function_,
 438              get_data<void>(), timeout);
 439
 440       } else { // Receiver
 441         on_recv(*this);
 442         on_this_recv(*this);
 443         recv(receiver_, mailbox_, dst_buff_, &dst_buff_size_, match_fun_, copy_data_function_, get_data<void>(),
 444              timeout, rate_);
 445       }
 446       break;
 447     case State::STARTED:
 448       try {
 449         issuer = kernel::actor::ActorImpl::self();
 450         kernel::actor::ActivityWaitSimcall observer{issuer, pimpl_.get(), timeout, "Wait"};
 451         if (kernel::actor::simcall_blocking(
 452                 [&observer] { observer.get_activity()->wait_for(observer.get_issuer(), observer.get_timeout()); },
 453                 &observer)) {
 454           throw TimeoutException(XBT_THROW_POINT, "Timeouted");
 455         }
 456       } catch (const NetworkFailureException& e) {
 457         issuer->simcall_.observer_ = nullptr; // Comm failed on network failure, reset the observer to nullptr
 458         complete(State::FAILED);
 459         e.rethrow_nested(XBT_THROW_POINT, boost::core::demangle(typeid(e).name()) + " raised in kernel mode.");
 460       }
 461       break;
 462
 463     case State::CANCELED:
 464       throw CancelException(XBT_THROW_POINT, "Communication canceled");
 465
 466     default:
 467       THROW_IMPOSSIBLE;
 468   }
 469   complete(State::FINISHED);
 470   return this;
 471 }
 472
 473 ssize_t Comm::deprecated_wait_any_for(const std::vector<CommPtr>& comms, double timeout) // XBT_ATTRIB_DEPRECATED_v339
 474 {
 475   if (comms.empty())
 476     return -1;
 477   ActivitySet set;
 478   for (const auto& comm : comms)
 479     set.push(comm);
 480   try {
 481     auto* ret = set.wait_any_for(timeout).get();
 482     for (size_t i = 0; i < comms.size(); i++)
 483       if (comms[i].get() == ret)
 484         return i;
 485
 486   } catch (TimeoutException& e) {
 487     return -1;
 488   } catch (const NetworkFailureException& e) {
 489     for (auto c : comms)
 490       if (c->pimpl_->get_state() == kernel::activity::State::FAILED)
 491         c->complete(State::FAILED);
 492
 493     e.rethrow_nested(XBT_THROW_POINT, boost::core::demangle(typeid(e).name()) + " raised in kernel mode.");
 494   }
 495   return -1;
 496 }
 497
 498 void Comm::wait_all(const std::vector<CommPtr>& comms) // XBT_ATTRIB_DEPRECATED_v339
 499 {
 500   // TODO: this should be a simcall or something
 501   for (const auto& comm : comms)
 502     comm->wait();
 503 }
 504
 505 size_t Comm::wait_all_for(const std::vector<CommPtr>& comms, double timeout) // XBT_ATTRIB_DEPRECATED_v339
 506 {
 507   if (timeout < 0.0) {
 508     for (const auto& comm : comms)
 509       comm->wait();
 510     return comms.size();
 511   }
 512
 513   ActivitySet set;
 514   for (auto comm : comms)
 515     set.push(comm);
 516   set.wait_all_for(timeout);
 517
 518   return set.size();
 519 }
 520 } // namespace simgrid::s4u
 521 /* **************************** Public C interface *************************** */
 522 int sg_comm_isinstance(sg_activity_t acti)
 523 {
 524   return dynamic_cast<simgrid::s4u::Comm*>(acti) != nullptr;
 525 }
 526
 527 void sg_comm_detach(sg_comm_t comm, void (*clean_function)(void*))
 528 {
 529   comm->detach(clean_function);
 530   comm->unref();
 531 }
 532 void sg_comm_unref(sg_comm_t comm)
 533 {
 534   comm->unref();
 535 }
 536 int sg_comm_test(sg_comm_t comm)
 537 {
 538   bool finished = comm->test();
 539   if (finished)
 540     comm->unref();
 541   return finished;
 542 }
 543
 544 sg_error_t sg_comm_wait(sg_comm_t comm)
 545 {
 546   return sg_comm_wait_for(comm, -1);
 547 }
 548
 549 sg_error_t sg_comm_wait_for(sg_comm_t comm, double timeout)
 550 {
 551   sg_error_t status = SG_OK;
 552
 553   simgrid::s4u::CommPtr s4u_comm(comm, false);
 554   try {
 555     s4u_comm->wait_for(timeout);
 556   } catch (const simgrid::TimeoutException&) {
 557     status = SG_ERROR_TIMEOUT;
 558   } catch (const simgrid::CancelException&) {
 559     status = SG_ERROR_CANCELED;
 560   } catch (const simgrid::NetworkFailureException&) {
 561     status = SG_ERROR_NETWORK;
 562   }
 563   return status;
 564 }
 565
 566 void sg_comm_wait_all(sg_comm_t* comms, size_t count) // XBT_ATTRIB_DEPRECATED_v339
 567 {
 568   simgrid::s4u::ActivitySet as;
 569   for (size_t i = 0; i < count; i++)
 570     as.push(comms[i]);
 571
 572   as.wait_all();
 573 }
 574
 575 ssize_t sg_comm_wait_any(sg_comm_t* comms, size_t count) // XBT_ATTRIB_DEPRECATED_v339
 576 {
 577   std::vector<simgrid::s4u::CommPtr> s4u_comms;
 578   for (size_t i = 0; i < count; i++)
 579     s4u_comms.emplace_back(comms[i], false);
 580
 581   ssize_t pos = simgrid::s4u::Comm::deprecated_wait_any_for(s4u_comms, -1);
 582   for (size_t i = 0; i < count; i++) {
 583     if (pos != -1 && static_cast<size_t>(pos) != i)
 584       s4u_comms[i]->add_ref();
 585   }
 586   return pos;
 587 }
 588
 589 ssize_t sg_comm_wait_any_for(sg_comm_t* comms, size_t count, double timeout) // XBT_ATTRIB_DEPRECATED_v339
 590 {
 591   std::vector<simgrid::s4u::CommPtr> s4u_comms;
 592   for (size_t i = 0; i < count; i++)
 593     s4u_comms.emplace_back(comms[i], false);
 594
 595   ssize_t pos = simgrid::s4u::Comm::deprecated_wait_any_for(s4u_comms, timeout);
 596   for (size_t i = 0; i < count; i++) {
 597     if (pos != -1 && static_cast<size_t>(pos) != i)
 598       s4u_comms[i]->add_ref();
 599   }
 600   return pos;
 601 }