src/mc/mc_api.cpp

   1 #include "mc_api.hpp"
   2
   3 #include "src/kernel/activity/MailboxImpl.hpp"
   4 #include "src/kernel/activity/MutexImpl.hpp"
   5 #include "src/mc/Session.hpp"
   6 #include "src/mc/mc_comm_pattern.hpp"
   7 #include "src/mc/mc_private.hpp"
   8 #include "src/mc/mc_record.hpp"
   9 #include "src/mc/mc_smx.hpp"
  10 #include "src/mc/remote/RemoteSimulation.hpp"
  11 #include "src/mc/mc_pattern.hpp"
  12 #include "src/mc/checker/SimcallInspector.hpp"
  13 #include <xbt/asserts.h>
  14 #include <xbt/log.h>
  15 // #include <xbt/dynar.h>
  16
  17 #if HAVE_SMPI
  18 #include "src/smpi/include/smpi_request.hpp"
  19 #endif
  20
  21 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_api, mc, "Logging specific to MC Fasade APIs ");
  22
  23 using Simcall = simgrid::simix::Simcall;
  24
  25 namespace simgrid {
  26 namespace mc {
  27
  28 static inline const char* get_color(int id)
  29 {
  30   static constexpr std::array<const char*, 13> colors{{"blue", "red", "green3", "goldenrod", "brown", "purple",
  31                                                        "magenta", "turquoise4", "gray25", "forestgreen", "hotpink",
  32                                                        "lightblue", "tan"}};
  33   return colors[id % colors.size()];
  34 }
  35
  36 static char *pointer_to_string(void *pointer)
  37 {
  38   if (XBT_LOG_ISENABLED(mc_api, xbt_log_priority_verbose))
  39     return bprintf("%p", pointer);
  40
  41   return xbt_strdup("(verbose only)");
  42 }
  43
  44 static char *buff_size_to_string(size_t buff_size)
  45 {
  46   if (XBT_LOG_ISENABLED(mc_api, xbt_log_priority_verbose))
  47     return bprintf("%zu", buff_size);
  48
  49   return xbt_strdup("(verbose only)");
  50 }
  51
  52 /* Search an enabled transition for the given process.
  53  *
  54  * This can be seen as an iterator returning the next transition of the process.
  55  *
  56  * We only consider the processes that are both
  57  *  - marked "to be interleaved" in their ActorState (controlled by the checker algorithm).
  58  *  - which simcall can currently be executed (like a comm where the other partner is already known)
  59  * Once we returned the last enabled transition of a process, it is marked done.
  60  *
  61  * Things can get muddled with the WAITANY and TESTANY simcalls, that are rewritten on the fly to a bunch of WAIT
  62  * (resp TEST) transitions using the transition.argument field to remember what was the last returned sub-transition.
  63  */
  64 static inline smx_simcall_t MC_state_choose_request_for_process(simgrid::mc::State* state, smx_actor_t actor)
  65 {
  66   /* reset the outgoing transition */
  67   simgrid::mc::ActorState* procstate = &state->actor_states_[actor->get_pid()];
  68   state->transition_.pid_            = -1;
  69   state->transition_.argument_       = -1;
  70   state->executed_req_.call_         =  Simcall::NONE;
  71
  72   if (not simgrid::mc::actor_is_enabled(actor))
  73     return nullptr; // Not executable in the application
  74
  75   smx_simcall_t req = nullptr;
  76   switch (actor->simcall_.call_) {
  77     case Simcall::COMM_WAITANY:
  78       state->transition_.argument_ = -1;
  79       while (procstate->times_considered < simcall_comm_waitany__get__count(&actor->simcall_)) {
  80         if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall_, procstate->times_considered)) {
  81           state->transition_.argument_ = procstate->times_considered;
  82           ++procstate->times_considered;
  83           break;
  84         }
  85         ++procstate->times_considered;
  86       }
  87
  88       if (procstate->times_considered >= simcall_comm_waitany__get__count(&actor->simcall_))
  89         procstate->set_done();
  90       if (state->transition_.argument_ != -1)
  91         req = &actor->simcall_;
  92       break;
  93
  94     case Simcall::COMM_TESTANY: {
  95       unsigned start_count         = procstate->times_considered;
  96       state->transition_.argument_ = -1;
  97       while (procstate->times_considered < simcall_comm_testany__get__count(&actor->simcall_)) {
  98         if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall_, procstate->times_considered)) {
  99           state->transition_.argument_ = procstate->times_considered;
 100           ++procstate->times_considered;
 101           break;
 102         }
 103         ++procstate->times_considered;
 104       }
 105
 106       if (procstate->times_considered >= simcall_comm_testany__get__count(&actor->simcall_))
 107         procstate->set_done();
 108
 109       if (state->transition_.argument_ != -1 || start_count == 0)
 110         req = &actor->simcall_;
 111
 112       break;
 113     }
 114
 115     case Simcall::COMM_WAIT: {
 116       simgrid::mc::RemotePtr<simgrid::kernel::activity::CommImpl> remote_act =
 117           remote(simcall_comm_wait__getraw__comm(&actor->simcall_));
 118       simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_act;
 119       mc_model_checker->get_remote_simulation().read(temp_act, remote_act);
 120       const simgrid::kernel::activity::CommImpl* act = temp_act.get_buffer();
 121       if (act->src_actor_.get() && act->dst_actor_.get())
 122         state->transition_.argument_ = 0; // OK
 123       else if (act->src_actor_.get() == nullptr && act->type_ == simgrid::kernel::activity::CommImpl::Type::READY &&
 124                act->detached())
 125         state->transition_.argument_ = 0; // OK
 126       else
 127         state->transition_.argument_ = -1; // timeout
 128       procstate->set_done();
 129       req = &actor->simcall_;
 130       break;
 131     }
 132
 133     case Simcall::MC_RANDOM: {
 134       int min_value                = simcall_mc_random__get__min(&actor->simcall_);
 135       state->transition_.argument_ = procstate->times_considered + min_value;
 136       procstate->times_considered++;
 137       if (state->transition_.argument_ == simcall_mc_random__get__max(&actor->simcall_))
 138         procstate->set_done();
 139       req = &actor->simcall_;
 140       break;
 141     }
 142
 143     default:
 144       procstate->set_done();
 145       state->transition_.argument_ = 0;
 146       req                          = &actor->simcall_;
 147       break;
 148   }
 149   if (not req)
 150     return nullptr;
 151
 152   state->transition_.pid_ = actor->get_pid();
 153   state->executed_req_    = *req;
 154   // Fetch the data of the request and translate it:
 155   state->internal_req_ = *req;
 156
 157   /* The waitany and testany request are transformed into a wait or test request over the corresponding communication
 158    * action so it can be treated later by the dependence function. */
 159   switch (req->call_) {
 160     case Simcall::COMM_WAITANY: {
 161       state->internal_req_.call_ = Simcall::COMM_WAIT;
 162       simgrid::kernel::activity::CommImpl* remote_comm;
 163       remote_comm = mc_model_checker->get_remote_simulation().read(
 164           remote(simcall_comm_waitany__get__comms(req) + state->transition_.argument_));
 165       mc_model_checker->get_remote_simulation().read(state->internal_comm_, remote(remote_comm));
 166       simcall_comm_wait__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 167       simcall_comm_wait__set__timeout(&state->internal_req_, 0);
 168       break;
 169     }
 170
 171     case Simcall::COMM_TESTANY:
 172       state->internal_req_.call_ = Simcall::COMM_TEST;
 173
 174       if (state->transition_.argument_ > 0) {
 175         simgrid::kernel::activity::CommImpl* remote_comm = mc_model_checker->get_remote_simulation().read(
 176             remote(simcall_comm_testany__get__comms(req) + state->transition_.argument_));
 177         mc_model_checker->get_remote_simulation().read(state->internal_comm_, remote(remote_comm));
 178       }
 179
 180       simcall_comm_test__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 181       simcall_comm_test__set__result(&state->internal_req_, state->transition_.argument_);
 182       break;
 183
 184     case Simcall::COMM_WAIT:
 185       mc_model_checker->get_remote_simulation().read_bytes(&state->internal_comm_, sizeof(state->internal_comm_),
 186                                                            remote(simcall_comm_wait__getraw__comm(req)));
 187       simcall_comm_wait__set__comm(&state->executed_req_, state->internal_comm_.get_buffer());
 188       simcall_comm_wait__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 189       break;
 190
 191     case Simcall::COMM_TEST:
 192       mc_model_checker->get_remote_simulation().read_bytes(&state->internal_comm_, sizeof(state->internal_comm_),
 193                                                            remote(simcall_comm_test__getraw__comm(req)));
 194       simcall_comm_test__set__comm(&state->executed_req_, state->internal_comm_.get_buffer());
 195       simcall_comm_test__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 196       break;
 197
 198     default:
 199       /* No translation needed */
 200       break;
 201   }
 202
 203   return req;
 204 }
 205
 206 void mc_api::initialize(char** argv)
 207 {
 208   simgrid::mc::session = new simgrid::mc::Session([argv] {
 209     int i = 1;
 210     while (argv[i] != nullptr && argv[i][0] == '-')
 211       i++;
 212     xbt_assert(argv[i] != nullptr,
 213                "Unable to find a binary to exec on the command line. Did you only pass config flags?");
 214     execvp(argv[i], argv + i);
 215     xbt_die("The model-checked process failed to exec(): %s", strerror(errno));
 216   });
 217 }
 218
 219 std::vector<simgrid::mc::ActorInformation>& mc_api::get_actors() const
 220 {
 221   return mc_model_checker->get_remote_simulation().actors();
 222 }
 223
 224 bool mc_api::actor_is_enabled(aid_t pid) const
 225 {
 226   return session->actor_is_enabled(pid);
 227 }
 228
 229 unsigned long mc_api::get_maxpid() const
 230 {
 231   return MC_smx_get_maxpid();
 232 }
 233
 234 int mc_api::get_actors_size() const
 235 {
 236   return mc_model_checker->get_remote_simulation().actors().size();
 237 }
 238
 239 bool mc_api::comm_addr_equal(const kernel::activity::CommImpl* comm_addr1, const kernel::activity::CommImpl* comm_addr2) const
 240 {
 241   return remote(comm_addr1) == remote(comm_addr2);
 242 }
 243
 244 kernel::activity::CommImpl* mc_api::get_comm_isend_raw_addr(smx_simcall_t request) const
 245 {
 246   auto comm_addr = simcall_comm_isend__getraw__result(request);
 247   return static_cast<kernel::activity::CommImpl*>(comm_addr);
 248 }
 249
 250 kernel::activity::CommImpl* mc_api::get_comm_wait_raw_addr(smx_simcall_t request) const
 251 {
 252   return simcall_comm_wait__getraw__comm(request);
 253 }
 254
 255 kernel::activity::CommImpl* mc_api::get_comm_waitany_raw_addr(smx_simcall_t request, int value) const
 256 {
 257   auto addr = mc_model_checker->get_remote_simulation().read(remote(simcall_comm_waitany__getraw__comms(request) + value));
 258   return static_cast<simgrid::kernel::activity::CommImpl*>(addr);
 259 }
 260
 261 std::string mc_api::get_pattern_comm_rdv(void* addr) const
 262 {
 263   Remote<kernel::activity::CommImpl> temp_synchro;
 264   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 265   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 266
 267   char* remote_name = mc_model_checker->get_remote_simulation().read<char*>(RemotePtr<char*>(
 268       (uint64_t)(synchro->get_mailbox() ? &synchro->get_mailbox()->get_name() : &synchro->mbox_cpy->get_name())));
 269   auto rdv = mc_model_checker->get_remote_simulation().read_string(RemotePtr<char>(remote_name));
 270   return rdv;
 271 }
 272
 273 unsigned long mc_api::get_pattern_comm_src_proc(void* addr) const
 274 {
 275   Remote<kernel::activity::CommImpl> temp_synchro;
 276   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 277   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 278   auto src_proc = mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->src_actor_.get()))->get_pid();
 279   return src_proc;
 280 }
 281
 282 unsigned long mc_api::get_pattern_comm_dst_proc(void* addr) const
 283 {
 284   Remote<kernel::activity::CommImpl> temp_synchro;
 285   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 286   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 287   auto src_proc = mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->dst_actor_.get()))->get_pid();
 288   return src_proc;
 289 }
 290
 291 std::vector<char> mc_api::get_pattern_comm_data(void* addr) const
 292 {
 293   Remote<kernel::activity::CommImpl> temp_synchro;
 294   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 295   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 296
 297   std::vector<char> buffer {};
 298   if (synchro->src_buff_ != nullptr) {
 299     buffer.resize(synchro->src_buff_size_);
 300     mc_model_checker->get_remote_simulation().read_bytes(buffer.data(), buffer.size(),
 301                                                          remote(synchro->src_buff_));
 302   }
 303   return buffer;
 304 }
 305
 306 std::vector<char> mc_api::get_pattern_comm_data(const kernel::activity::CommImpl* comm_addr) const
 307 {
 308   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 309   mc_model_checker->get_remote_simulation().read(temp_comm, remote((kernel::activity::CommImpl*)comm_addr));
 310   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 311
 312   std::vector<char> buffer {};
 313   if (comm->src_buff_ != nullptr) {
 314     buffer.resize(comm->src_buff_size_);
 315     mc_model_checker->get_remote_simulation().read_bytes(buffer.data(), buffer.size(),
 316                                                          remote(comm->src_buff_));
 317   }
 318   return buffer;
 319 }
 320
 321 const char* mc_api::get_actor_host_name(smx_actor_t actor) const
 322 {
 323   const char* host_name = MC_smx_actor_get_host_name(actor);
 324   return host_name;
 325 }
 326
 327 #if HAVE_SMPI
 328 bool mc_api::check_send_request_detached(smx_simcall_t const& simcall) const
 329 {
 330   simgrid::smpi::Request mpi_request;
 331   mc_model_checker->get_remote_simulation().read(
 332       &mpi_request, remote(static_cast<smpi::Request*>(simcall_comm_isend__get__data(simcall))));
 333   return mpi_request.detached();
 334 }
 335 #endif
 336
 337 smx_actor_t mc_api::get_src_actor(const kernel::activity::CommImpl* comm_addr) const
 338 {
 339   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 340   mc_model_checker->get_remote_simulation().read(temp_comm, remote((kernel::activity::CommImpl*)comm_addr));
 341   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 342
 343   auto src_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->src_actor_.get()));
 344   return src_proc;
 345 }
 346
 347 smx_actor_t mc_api::get_dst_actor(const kernel::activity::CommImpl* comm_addr) const
 348 {
 349   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 350   mc_model_checker->get_remote_simulation().read(temp_comm, remote((kernel::activity::CommImpl*)comm_addr));
 351   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 352
 353   auto dst_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->dst_actor_.get()));
 354   return dst_proc;
 355 }
 356
 357 std::size_t mc_api::get_remote_heap_bytes() const
 358 {
 359   RemoteSimulation& process = mc_model_checker->get_remote_simulation();
 360   auto heap_bytes_used      = mmalloc_get_bytes_used_remote(process.get_heap()->heaplimit, process.get_malloc_info());
 361   return heap_bytes_used;
 362 }
 363
 364 void mc_api::session_initialize() const
 365 {
 366   session->initialize();
 367 }
 368
 369 ModelChecker* mc_api::get_model_checker() const
 370 {
 371   return mc_model_checker;
 372 }
 373
 374 void mc_api::mc_inc_visited_states() const
 375 {
 376   mc_model_checker->visited_states++;
 377 }
 378
 379 void mc_api::mc_inc_executed_trans() const
 380 {
 381   mc_model_checker->executed_transitions++;
 382 }
 383
 384 unsigned long mc_api::mc_get_visited_states() const
 385 {
 386   return mc_model_checker->visited_states;
 387 }
 388
 389 unsigned long mc_api::mc_get_executed_trans() const
 390 {
 391   return mc_model_checker->executed_transitions;
 392 }
 393
 394 bool mc_api::mc_check_deadlock() const
 395 {
 396   return mc_model_checker->checkDeadlock();
 397 }
 398
 399 void mc_api::mc_show_deadlock() const
 400 {
 401   MC_show_deadlock();
 402 }
 403
 404 smx_actor_t mc_api::simcall_get_issuer(s_smx_simcall const* req) const
 405 {
 406   return MC_smx_simcall_get_issuer(req);
 407 }
 408
 409 bool mc_api::mc_is_null() const
 410 {
 411   auto is_null = (mc_model_checker == nullptr) ? true : false;
 412   return is_null;
 413 }
 414
 415 Checker* mc_api::mc_get_checker() const
 416 {
 417   return mc_model_checker->getChecker();
 418 }
 419
 420 RemoteSimulation& mc_api::mc_get_remote_simulation() const
 421 {
 422   return mc_model_checker->get_remote_simulation();
 423 }
 424
 425 void mc_api::handle_simcall(Transition const& transition) const
 426 {
 427   mc_model_checker->handle_simcall(transition);
 428 }
 429
 430 void mc_api::mc_wait_for_requests() const
 431 {
 432   mc_model_checker->wait_for_requests();
 433 }
 434
 435 void mc_api::mc_exit(int status) const
 436 {
 437   mc_model_checker->exit(status);
 438 }
 439
 440 std::string const& mc_api::mc_get_host_name(std::string const& hostname) const
 441 {
 442   return mc_model_checker->get_host_name(hostname);
 443 }
 444
 445 void mc_api::dump_record_path() const
 446 {
 447   simgrid::mc::dumpRecordPath();
 448 }
 449
 450 smx_simcall_t mc_api::mc_state_choose_request(simgrid::mc::State* state) const
 451 {
 452   for (auto& actor : mc_model_checker->get_remote_simulation().actors()) {
 453     /* Only consider the actors that were marked as interleaving by the checker algorithm */
 454     if (not state->actor_states_[actor.copy.get_buffer()->get_pid()].is_todo())
 455       continue;
 456
 457     smx_simcall_t res = MC_state_choose_request_for_process(state, actor.copy.get_buffer());
 458     if (res)
 459       return res;
 460   }
 461   return nullptr;
 462 }
 463
 464 bool mc_api::request_depend(smx_simcall_t req1, smx_simcall_t req2) const
 465 {
 466   return simgrid::mc::request_depend(req1, req2);
 467 }
 468
 469 std::string mc_api::request_to_string(smx_simcall_t req, int value, RequestType request_type) const
 470 {
 471   xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
 472
 473   if (req->inspector_ != nullptr)
 474     return req->inspector_->to_string();
 475
 476   bool use_remote_comm = true;
 477   switch(request_type) {
 478   case simgrid::mc::RequestType::simix:
 479     use_remote_comm = true;
 480     break;
 481   case simgrid::mc::RequestType::executed:
 482   case simgrid::mc::RequestType::internal:
 483     use_remote_comm = false;
 484     break;
 485   default:
 486     THROW_IMPOSSIBLE;
 487   }
 488
 489   const char* type = nullptr;
 490   char *args = nullptr;
 491
 492   smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 493
 494   switch (req->call_) {
 495     case Simcall::COMM_ISEND: {
 496       type     = "iSend";
 497       char* p  = pointer_to_string(simcall_comm_isend__get__src_buff(req));
 498       char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
 499       if (issuer->get_host())
 500         args = bprintf("src=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 501                        MC_smx_actor_get_name(issuer), p, bs);
 502       else
 503         args = bprintf("src=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
 504       xbt_free(bs);
 505       xbt_free(p);
 506       break;
 507     }
 508
 509     case Simcall::COMM_IRECV: {
 510       size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
 511       size_t size         = 0;
 512       if (remote_size)
 513         mc_model_checker->get_remote_simulation().read_bytes(&size, sizeof(size), remote(remote_size));
 514
 515       type     = "iRecv";
 516       char* p  = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
 517       char* bs = buff_size_to_string(size);
 518       if (issuer->get_host())
 519         args = bprintf("dst=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 520                        MC_smx_actor_get_name(issuer), p, bs);
 521       else
 522         args = bprintf("dst=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
 523       xbt_free(bs);
 524       xbt_free(p);
 525       break;
 526     }
 527
 528     case Simcall::COMM_WAIT: {
 529       simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 530       char* p;
 531       if (value == -1) {
 532         type = "WaitTimeout";
 533         p    = pointer_to_string(remote_act);
 534         args = bprintf("comm=%s", p);
 535       } else {
 536         type = "Wait";
 537         p    = pointer_to_string(remote_act);
 538
 539         simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 540         const simgrid::kernel::activity::CommImpl* act;
 541         if (use_remote_comm) {
 542           mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 543           act = temp_synchro.get_buffer();
 544         } else
 545           act = remote_act;
 546
 547         smx_actor_t src_proc =
 548             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 549         smx_actor_t dst_proc =
 550             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 551         args                 = bprintf("comm=%s [(%ld)%s (%s)-> (%ld)%s (%s)]", p, src_proc ? src_proc->get_pid() : 0,
 552                        src_proc ? MC_smx_actor_get_host_name(src_proc) : "",
 553                        src_proc ? MC_smx_actor_get_name(src_proc) : "", dst_proc ? dst_proc->get_pid() : 0,
 554                        dst_proc ? MC_smx_actor_get_host_name(dst_proc) : "",
 555                        dst_proc ? MC_smx_actor_get_name(dst_proc) : "");
 556       }
 557       xbt_free(p);
 558       break;
 559     }
 560
 561     case Simcall::COMM_TEST: {
 562       simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_test__getraw__comm(req);
 563       simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 564       const simgrid::kernel::activity::CommImpl* act;
 565       if (use_remote_comm) {
 566         mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 567         act = temp_synchro.get_buffer();
 568       } else
 569         act = remote_act;
 570
 571       char* p;
 572       if (act->src_actor_.get() == nullptr || act->dst_actor_.get() == nullptr) {
 573         type = "Test FALSE";
 574         p    = pointer_to_string(remote_act);
 575         args = bprintf("comm=%s", p);
 576       } else {
 577         type = "Test TRUE";
 578         p    = pointer_to_string(remote_act);
 579
 580         smx_actor_t src_proc =
 581             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 582         smx_actor_t dst_proc =
 583             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 584         args                 = bprintf("comm=%s [(%ld)%s (%s) -> (%ld)%s (%s)]", p, src_proc->get_pid(),
 585                        MC_smx_actor_get_name(src_proc), MC_smx_actor_get_host_name(src_proc), dst_proc->get_pid(),
 586                        MC_smx_actor_get_name(dst_proc), MC_smx_actor_get_host_name(dst_proc));
 587       }
 588       xbt_free(p);
 589       break;
 590     }
 591
 592     case Simcall::COMM_WAITANY: {
 593       type         = "WaitAny";
 594       size_t count = simcall_comm_waitany__get__count(req);
 595       if (count > 0) {
 596         simgrid::kernel::activity::CommImpl* remote_sync;
 597         remote_sync =
 598             mc_model_checker->get_remote_simulation().read(remote(simcall_comm_waitany__get__comms(req) + value));
 599         char* p     = pointer_to_string(remote_sync);
 600         args        = bprintf("comm=%s (%d of %zu)", p, value + 1, count);
 601         xbt_free(p);
 602       } else
 603         args = bprintf("comm at idx %d", value);
 604       break;
 605     }
 606
 607     case Simcall::COMM_TESTANY:
 608       if (value == -1) {
 609         type = "TestAny FALSE";
 610         args = xbt_strdup("-");
 611       } else {
 612         type = "TestAny";
 613         args = bprintf("(%d of %zu)", value + 1, simcall_comm_testany__get__count(req));
 614       }
 615       break;
 616
 617     case Simcall::MUTEX_TRYLOCK:
 618     case Simcall::MUTEX_LOCK: {
 619       if (req->call_ == Simcall::MUTEX_LOCK)
 620         type = "Mutex LOCK";
 621       else
 622         type = "Mutex TRYLOCK";
 623
 624       simgrid::mc::Remote<simgrid::kernel::activity::MutexImpl> mutex;
 625       mc_model_checker->get_remote_simulation().read_bytes(mutex.get_buffer(), sizeof(mutex),
 626                                                            remote(req->call_ == Simcall::MUTEX_LOCK
 627                                                                       ? simcall_mutex_lock__get__mutex(req)
 628                                                                       : simcall_mutex_trylock__get__mutex(req)));
 629       args = bprintf("locked = %d, owner = %d, sleeping = n/a", mutex.get_buffer()->is_locked(),
 630                      mutex.get_buffer()->get_owner() != nullptr
 631                          ? (int)mc_model_checker->get_remote_simulation()
 632                                .resolve_actor(simgrid::mc::remote(mutex.get_buffer()->get_owner()))
 633                                ->get_pid()
 634                          : -1);
 635       break;
 636     }
 637
 638     case Simcall::MC_RANDOM:
 639       type = "MC_RANDOM";
 640       args = bprintf("%d", value);
 641       break;
 642
 643     default:
 644       type = SIMIX_simcall_name(req->call_);
 645       args = bprintf("??");
 646       break;
 647   }
 648
 649   std::string str;
 650   if (args != nullptr)
 651     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s(%s)", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 652                                       MC_smx_actor_get_name(issuer), type, args);
 653   else
 654     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s ", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 655                                       MC_smx_actor_get_name(issuer), type);
 656   xbt_free(args);
 657   return str;
 658 }
 659
 660 std::string mc_api::request_get_dot_output(smx_simcall_t req, int value) const
 661 {
 662   const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 663   const char* color        = get_color(issuer->get_pid() - 1);
 664
 665   if (req->inspector_ != nullptr)
 666     return simgrid::xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s",
 667                                        req->inspector_->dot_label().c_str(), color, color);
 668
 669   std::string label;
 670
 671   switch (req->call_) {
 672     case Simcall::COMM_ISEND:
 673       if (issuer->get_host())
 674         label = xbt::string_printf("[(%ld)%s] iSend", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 675       else
 676         label = bprintf("[(%ld)] iSend", issuer->get_pid());
 677       break;
 678
 679     case Simcall::COMM_IRECV:
 680       if (issuer->get_host())
 681         label = xbt::string_printf("[(%ld)%s] iRecv", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 682       else
 683         label = xbt::string_printf("[(%ld)] iRecv", issuer->get_pid());
 684       break;
 685
 686     case Simcall::COMM_WAIT:
 687       if (value == -1) {
 688         if (issuer->get_host())
 689           label = xbt::string_printf("[(%ld)%s] WaitTimeout", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 690         else
 691           label = xbt::string_printf("[(%ld)] WaitTimeout", issuer->get_pid());
 692       } else {
 693         kernel::activity::ActivityImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 694         Remote<kernel::activity::CommImpl> temp_comm;
 695         mc_model_checker->get_remote_simulation().read(temp_comm,
 696                                                        remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 697         const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 698
 699         const kernel::actor::ActorImpl* src_proc =
 700             mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->src_actor_.get()));
 701         const kernel::actor::ActorImpl* dst_proc =
 702             mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->dst_actor_.get()));
 703         if (issuer->get_host())
 704           label =
 705               xbt::string_printf("[(%ld)%s] Wait [(%ld)->(%ld)]", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 706                                  src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 707         else
 708           label = xbt::string_printf("[(%ld)] Wait [(%ld)->(%ld)]", issuer->get_pid(),
 709                                      src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 710       }
 711       break;
 712
 713     case Simcall::COMM_TEST: {
 714       kernel::activity::ActivityImpl* remote_act = simcall_comm_test__getraw__comm(req);
 715       Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 716       mc_model_checker->get_remote_simulation().read(temp_comm,
 717                                                      remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 718       const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 719       if (comm->src_actor_.get() == nullptr || comm->dst_actor_.get() == nullptr) {
 720         if (issuer->get_host())
 721           label = xbt::string_printf("[(%ld)%s] Test FALSE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 722         else
 723           label = bprintf("[(%ld)] Test FALSE", issuer->get_pid());
 724       } else {
 725         if (issuer->get_host())
 726           label = xbt::string_printf("[(%ld)%s] Test TRUE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 727         else
 728           label = xbt::string_printf("[(%ld)] Test TRUE", issuer->get_pid());
 729       }
 730       break;
 731     }
 732
 733     case Simcall::COMM_WAITANY: {
 734       size_t comms_size = simcall_comm_waitany__get__count(req);
 735       if (issuer->get_host())
 736         label = xbt::string_printf("[(%ld)%s] WaitAny [%d of %zu]", issuer->get_pid(),
 737                                    MC_smx_actor_get_host_name(issuer), value + 1, comms_size);
 738       else
 739         label = xbt::string_printf("[(%ld)] WaitAny [%d of %zu]", issuer->get_pid(), value + 1, comms_size);
 740       break;
 741     }
 742
 743     case Simcall::COMM_TESTANY:
 744       if (value == -1) {
 745         if (issuer->get_host())
 746           label = xbt::string_printf("[(%ld)%s] TestAny FALSE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 747         else
 748           label = xbt::string_printf("[(%ld)] TestAny FALSE", issuer->get_pid());
 749       } else {
 750         if (issuer->get_host())
 751           label =
 752               xbt::string_printf("[(%ld)%s] TestAny TRUE [%d of %lu]", issuer->get_pid(),
 753                                  MC_smx_actor_get_host_name(issuer), value + 1, simcall_comm_testany__get__count(req));
 754         else
 755           label = xbt::string_printf("[(%ld)] TestAny TRUE [%d of %lu]", issuer->get_pid(), value + 1,
 756                                      simcall_comm_testany__get__count(req));
 757       }
 758       break;
 759
 760     case Simcall::MUTEX_TRYLOCK:
 761       label = xbt::string_printf("[(%ld)] Mutex TRYLOCK", issuer->get_pid());
 762       break;
 763
 764     case Simcall::MUTEX_LOCK:
 765       label = xbt::string_printf("[(%ld)] Mutex LOCK", issuer->get_pid());
 766       break;
 767
 768     case Simcall::MC_RANDOM:
 769       if (issuer->get_host())
 770         label = xbt::string_printf("[(%ld)%s] MC_RANDOM (%d)", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 771                                    value);
 772       else
 773         label = xbt::string_printf("[(%ld)] MC_RANDOM (%d)", issuer->get_pid(), value);
 774       break;
 775
 776     default:
 777       THROW_UNIMPLEMENTED;
 778   }
 779
 780   return xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s", label.c_str(), color, color);
 781 }
 782
 783 const char* mc_api::simcall_get_name(simgrid::simix::Simcall kind) const
 784 {
 785   return SIMIX_simcall_name(kind);
 786 }
 787
 788 #if HAVE_SMPI
 789 int mc_api::get_smpi_request_tag(smx_simcall_t const& simcall, simgrid::simix::Simcall type) const
 790 {
 791   simgrid::smpi::Request mpi_request;
 792   void* simcall_data = nullptr;
 793   if (type == Simcall::COMM_ISEND)
 794     simcall_data = simcall_comm_isend__get__data(simcall);
 795   else if (type == Simcall::COMM_IRECV)
 796     simcall_data = simcall_comm_irecv__get__data(simcall);
 797   mc_model_checker->get_remote_simulation().read(&mpi_request, remote(static_cast<smpi::Request*>(simcall_data)));
 798   return mpi_request.tag();
 799 }
 800 #endif
 801
 802 void mc_api::restore_state(std::shared_ptr<simgrid::mc::Snapshot> system_state) const
 803 {
 804   system_state->restore(&mc_model_checker->get_remote_simulation());
 805 }
 806
 807 void mc_api::log_state() const
 808 {
 809   session->log_state();
 810 }
 811
 812 bool mc_api::snapshot_equal(const Snapshot* s1, const Snapshot* s2) const
 813 {
 814   return simgrid::mc::snapshot_equal(s1, s2);
 815 }
 816
 817 simgrid::mc::Snapshot* mc_api::take_snapshot(int num_state) const
 818 {
 819   auto snapshot = new simgrid::mc::Snapshot(num_state);
 820   return snapshot;
 821 }
 822
 823 void mc_api::s_close() const
 824 {
 825   session->close();
 826 }
 827
 828 void mc_api::restore_initial_state() const
 829 {
 830   session->restore_initial_state();
 831 }
 832
 833 void mc_api::execute(Transition const& transition) const
 834 {
 835   session->execute(transition);
 836 }
 837
 838 #if SIMGRID_HAVE_MC
 839 void mc_api::automaton_load(const char *file) const
 840 {
 841   MC_automaton_load(file);
 842 }
 843 #endif
 844
 845 std::vector<int> mc_api::automaton_propositional_symbol_evaluate() const
 846 {
 847   unsigned int cursor = 0;
 848   std::vector<int> values;
 849   xbt_automaton_propositional_symbol_t ps = nullptr;
 850   xbt_dynar_foreach (mc::property_automaton->propositional_symbols, cursor, ps)
 851     values.push_back(xbt_automaton_propositional_symbol_evaluate(ps));
 852   return values;
 853 }
 854
 855 std::vector<xbt_automaton_state_t> mc_api::get_automaton_state() const
 856 {
 857   std::vector<xbt_automaton_state_t> automaton_stack;
 858   unsigned int cursor = 0;
 859   xbt_automaton_state_t automaton_state;
 860   xbt_dynar_foreach (mc::property_automaton->states, cursor, automaton_state)
 861     if (automaton_state->type == -1)
 862       automaton_stack.push_back(automaton_state);
 863   return automaton_stack;
 864 }
 865
 866 int mc_api::compare_automaton_exp_lable(const xbt_automaton_exp_label* l, std::vector<int> const& values) const
 867 {
 868   unsigned int cursor = 0;
 869   xbt_automaton_propositional_symbol_t p = nullptr;
 870   xbt_dynar_foreach (simgrid::mc::property_automaton->propositional_symbols, cursor, p) {
 871     if (std::strcmp(xbt_automaton_propositional_symbol_get_name(p), l->u.predicat) == 0)
 872       return cursor;
 873   }
 874   return -1;
 875 }
 876
 877 void mc_api::set_property_automaton(xbt_automaton_state_t const& automaton_state) const
 878 {
 879   mc::property_automaton->current_state = automaton_state;
 880 }
 881
 882 xbt_automaton_exp_label_t mc_api::get_automaton_transition_label(xbt_dynar_t const& dynar, int index) const
 883 {
 884   const xbt_automaton_transition* transition =
 885       xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
 886   return transition->label;
 887 }
 888
 889 xbt_automaton_state_t mc_api::get_automaton_transition_dst(xbt_dynar_t const& dynar, int index) const
 890 {
 891   const xbt_automaton_transition* transition =
 892       xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
 893   return transition->dst;
 894 }
 895
 896 } // namespace mc
 897 } // namespace simgrid