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/checker/SimcallInspector.hpp"
   7 #include "src/mc/mc_comm_pattern.hpp"
   8 #include "src/mc/mc_pattern.hpp"
   9 #include "src/mc/mc_private.hpp"
  10 #include "src/mc/mc_smx.hpp"
  11 #include "src/mc/remote/RemoteSimulation.hpp"
  12 #include <xbt/asserts.h>
  13 #include <xbt/log.h>
  14 // #include <xbt/dynar.h>
  15
  16 #if HAVE_SMPI
  17 #include "src/smpi/include/smpi_request.hpp"
  18 #endif
  19
  20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_api, mc, "Logging specific to MC Fasade APIs ");
  21
  22 using Simcall = simgrid::simix::Simcall;
  23
  24 namespace simgrid {
  25 namespace mc {
  26
  27 static inline const char* get_color(int id)
  28 {
  29   static constexpr std::array<const char*, 13> colors{{"blue", "red", "green3", "goldenrod", "brown", "purple",
  30                                                        "magenta", "turquoise4", "gray25", "forestgreen", "hotpink",
  31                                                        "lightblue", "tan"}};
  32   return colors[id % colors.size()];
  33 }
  34
  35 static char* pointer_to_string(void* pointer)
  36 {
  37   if (XBT_LOG_ISENABLED(mc_api, xbt_log_priority_verbose))
  38     return bprintf("%p", pointer);
  39
  40   return xbt_strdup("(verbose only)");
  41 }
  42
  43 static char* buff_size_to_string(size_t buff_size)
  44 {
  45   if (XBT_LOG_ISENABLED(mc_api, xbt_log_priority_verbose))
  46     return bprintf("%zu", buff_size);
  47
  48   return xbt_strdup("(verbose only)");
  49 }
  50
  51 /* Search an enabled transition for the given process.
  52  *
  53  * This can be seen as an iterator returning the next transition of the process.
  54  *
  55  * We only consider the processes that are both
  56  *  - marked "to be interleaved" in their ActorState (controlled by the checker algorithm).
  57  *  - which simcall can currently be executed (like a comm where the other partner is already known)
  58  * Once we returned the last enabled transition of a process, it is marked done.
  59  *
  60  * Things can get muddled with the WAITANY and TESTANY simcalls, that are rewritten on the fly to a bunch of WAIT
  61  * (resp TEST) transitions using the transition.argument field to remember what was the last returned sub-transition.
  62  */
  63 static inline smx_simcall_t MC_state_choose_request_for_process(simgrid::mc::State* state, smx_actor_t actor)
  64 {
  65   /* reset the outgoing transition */
  66   simgrid::mc::ActorState* procstate = &state->actor_states_[actor->get_pid()];
  67   state->transition_.pid_            = -1;
  68   state->transition_.argument_       = -1;
  69   state->executed_req_.call_         = Simcall::NONE;
  70
  71   if (not simgrid::mc::actor_is_enabled(actor))
  72     return nullptr; // Not executable in the application
  73
  74   smx_simcall_t req = nullptr;
  75   switch (actor->simcall_.call_) {
  76     case Simcall::COMM_WAITANY:
  77       state->transition_.argument_ = -1;
  78       while (procstate->times_considered < simcall_comm_waitany__get__count(&actor->simcall_)) {
  79         if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall_, procstate->times_considered)) {
  80           state->transition_.argument_ = procstate->times_considered;
  81           ++procstate->times_considered;
  82           break;
  83         }
  84         ++procstate->times_considered;
  85       }
  86
  87       if (procstate->times_considered >= simcall_comm_waitany__get__count(&actor->simcall_))
  88         procstate->set_done();
  89       if (state->transition_.argument_ != -1)
  90         req = &actor->simcall_;
  91       break;
  92
  93     case Simcall::COMM_TESTANY: {
  94       unsigned start_count         = procstate->times_considered;
  95       state->transition_.argument_ = -1;
  96       while (procstate->times_considered < simcall_comm_testany__get__count(&actor->simcall_)) {
  97         if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall_, procstate->times_considered)) {
  98           state->transition_.argument_ = procstate->times_considered;
  99           ++procstate->times_considered;
 100           break;
 101         }
 102         ++procstate->times_considered;
 103       }
 104
 105       if (procstate->times_considered >= simcall_comm_testany__get__count(&actor->simcall_))
 106         procstate->set_done();
 107
 108       if (state->transition_.argument_ != -1 || start_count == 0)
 109         req = &actor->simcall_;
 110
 111       break;
 112     }
 113
 114     case Simcall::COMM_WAIT: {
 115       simgrid::mc::RemotePtr<simgrid::kernel::activity::CommImpl> remote_act =
 116           remote(simcall_comm_wait__getraw__comm(&actor->simcall_));
 117       simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_act;
 118       mc_model_checker->get_remote_simulation().read(temp_act, remote_act);
 119       const simgrid::kernel::activity::CommImpl* act = temp_act.get_buffer();
 120       if (act->src_actor_.get() && act->dst_actor_.get())
 121         state->transition_.argument_ = 0; // OK
 122       else if (act->src_actor_.get() == nullptr && act->type_ == simgrid::kernel::activity::CommImpl::Type::READY &&
 123                act->detached())
 124         state->transition_.argument_ = 0; // OK
 125       else
 126         state->transition_.argument_ = -1; // timeout
 127       procstate->set_done();
 128       req = &actor->simcall_;
 129       break;
 130     }
 131
 132     case Simcall::MC_RANDOM: {
 133       int min_value                = simcall_mc_random__get__min(&actor->simcall_);
 134       state->transition_.argument_ = procstate->times_considered + min_value;
 135       procstate->times_considered++;
 136       if (state->transition_.argument_ == simcall_mc_random__get__max(&actor->simcall_))
 137         procstate->set_done();
 138       req = &actor->simcall_;
 139       break;
 140     }
 141
 142     default:
 143       procstate->set_done();
 144       state->transition_.argument_ = 0;
 145       req                          = &actor->simcall_;
 146       break;
 147   }
 148   if (not req)
 149     return nullptr;
 150
 151   state->transition_.pid_ = actor->get_pid();
 152   state->executed_req_    = *req;
 153   // Fetch the data of the request and translate it:
 154   state->internal_req_ = *req;
 155
 156   /* The waitany and testany request are transformed into a wait or test request over the corresponding communication
 157    * action so it can be treated later by the dependence function. */
 158   switch (req->call_) {
 159     case Simcall::COMM_WAITANY: {
 160       state->internal_req_.call_ = Simcall::COMM_WAIT;
 161       simgrid::kernel::activity::CommImpl* remote_comm;
 162       remote_comm = mc_model_checker->get_remote_simulation().read(
 163           remote(simcall_comm_waitany__get__comms(req) + state->transition_.argument_));
 164       mc_model_checker->get_remote_simulation().read(state->internal_comm_, remote(remote_comm));
 165       simcall_comm_wait__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 166       simcall_comm_wait__set__timeout(&state->internal_req_, 0);
 167       break;
 168     }
 169
 170     case Simcall::COMM_TESTANY:
 171       state->internal_req_.call_ = Simcall::COMM_TEST;
 172
 173       if (state->transition_.argument_ > 0) {
 174         simgrid::kernel::activity::CommImpl* remote_comm = mc_model_checker->get_remote_simulation().read(
 175             remote(simcall_comm_testany__get__comms(req) + state->transition_.argument_));
 176         mc_model_checker->get_remote_simulation().read(state->internal_comm_, remote(remote_comm));
 177       }
 178
 179       simcall_comm_test__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 180       simcall_comm_test__set__result(&state->internal_req_, state->transition_.argument_);
 181       break;
 182
 183     case Simcall::COMM_WAIT:
 184       mc_model_checker->get_remote_simulation().read_bytes(&state->internal_comm_, sizeof(state->internal_comm_),
 185                                                            remote(simcall_comm_wait__getraw__comm(req)));
 186       simcall_comm_wait__set__comm(&state->executed_req_, state->internal_comm_.get_buffer());
 187       simcall_comm_wait__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 188       break;
 189
 190     case Simcall::COMM_TEST:
 191       mc_model_checker->get_remote_simulation().read_bytes(&state->internal_comm_, sizeof(state->internal_comm_),
 192                                                            remote(simcall_comm_test__getraw__comm(req)));
 193       simcall_comm_test__set__comm(&state->executed_req_, state->internal_comm_.get_buffer());
 194       simcall_comm_test__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 195       break;
 196
 197     default:
 198       /* No translation needed */
 199       break;
 200   }
 201
 202   return req;
 203 }
 204
 205 void mc_api::initialize(char** argv) const
 206 {
 207   simgrid::mc::session = new simgrid::mc::Session([argv] {
 208     int i = 1;
 209     while (argv[i] != nullptr && argv[i][0] == '-')
 210       i++;
 211     xbt_assert(argv[i] != nullptr,
 212                "Unable to find a binary to exec on the command line. Did you only pass config flags?");
 213     execvp(argv[i], argv + i);
 214     xbt_die("The model-checked process failed to exec(): %s", strerror(errno));
 215   });
 216 }
 217
 218 std::vector<simgrid::mc::ActorInformation>& mc_api::get_actors() const
 219 {
 220   return mc_model_checker->get_remote_simulation().actors();
 221 }
 222
 223 bool mc_api::actor_is_enabled(aid_t pid) const
 224 {
 225   return session->actor_is_enabled(pid);
 226 }
 227
 228 unsigned long mc_api::get_maxpid() const
 229 {
 230   return MC_smx_get_maxpid();
 231 }
 232
 233 int mc_api::get_actors_size() const
 234 {
 235   return mc_model_checker->get_remote_simulation().actors().size();
 236 }
 237
 238 bool mc_api::comm_addr_equal(const kernel::activity::CommImpl* comm_addr1,
 239                              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 =
 258       mc_model_checker->get_remote_simulation().read(remote(simcall_comm_waitany__getraw__comms(request) + value));
 259   return static_cast<simgrid::kernel::activity::CommImpl*>(addr);
 260 }
 261
 262 std::string mc_api::get_pattern_comm_rdv(void* addr) const
 263 {
 264   Remote<kernel::activity::CommImpl> temp_synchro;
 265   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 266   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 267
 268   char* remote_name = mc_model_checker->get_remote_simulation().read<char*>(RemotePtr<char*>(
 269       (uint64_t)(synchro->get_mailbox() ? &synchro->get_mailbox()->get_name() : &synchro->mbox_cpy->get_name())));
 270   auto rdv          = mc_model_checker->get_remote_simulation().read_string(RemotePtr<char>(remote_name));
 271   return rdv;
 272 }
 273
 274 unsigned long mc_api::get_pattern_comm_src_proc(void* addr) const
 275 {
 276   Remote<kernel::activity::CommImpl> temp_synchro;
 277   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 278   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 279   auto src_proc =
 280       mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->src_actor_.get()))->get_pid();
 281   return src_proc;
 282 }
 283
 284 unsigned long mc_api::get_pattern_comm_dst_proc(void* addr) const
 285 {
 286   Remote<kernel::activity::CommImpl> temp_synchro;
 287   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 288   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 289   auto src_proc =
 290       mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->dst_actor_.get()))->get_pid();
 291   return src_proc;
 292 }
 293
 294 std::vector<char> mc_api::get_pattern_comm_data(void* addr) const
 295 {
 296   Remote<kernel::activity::CommImpl> temp_synchro;
 297   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 298   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 299
 300   std::vector<char> buffer{};
 301   if (synchro->src_buff_ != nullptr) {
 302     buffer.resize(synchro->src_buff_size_);
 303     mc_model_checker->get_remote_simulation().read_bytes(buffer.data(), buffer.size(), remote(synchro->src_buff_));
 304   }
 305   return buffer;
 306 }
 307
 308 std::vector<char> mc_api::get_pattern_comm_data(const kernel::activity::CommImpl* comm_addr) const
 309 {
 310   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 311   mc_model_checker->get_remote_simulation().read(temp_comm, remote((kernel::activity::CommImpl*)comm_addr));
 312   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 313
 314   std::vector<char> buffer{};
 315   if (comm->src_buff_ != nullptr) {
 316     buffer.resize(comm->src_buff_size_);
 317     mc_model_checker->get_remote_simulation().read_bytes(buffer.data(), buffer.size(), remote(comm->src_buff_));
 318   }
 319   return buffer;
 320 }
 321
 322 const char* mc_api::get_actor_host_name(smx_actor_t actor) const
 323 {
 324   const char* host_name = MC_smx_actor_get_host_name(actor);
 325   return host_name;
 326 }
 327
 328 #if HAVE_SMPI
 329 bool mc_api::check_send_request_detached(smx_simcall_t const& simcall) const
 330 {
 331   simgrid::smpi::Request mpi_request;
 332   mc_model_checker->get_remote_simulation().read(
 333       &mpi_request, remote(static_cast<smpi::Request*>(simcall_comm_isend__get__data(simcall))));
 334   return mpi_request.detached();
 335 }
 336 #endif
 337
 338 smx_actor_t mc_api::get_src_actor(const kernel::activity::CommImpl* comm_addr) const
 339 {
 340   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 341   mc_model_checker->get_remote_simulation().read(temp_comm, remote((kernel::activity::CommImpl*)comm_addr));
 342   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 343
 344   auto src_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->src_actor_.get()));
 345   return src_proc;
 346 }
 347
 348 smx_actor_t mc_api::get_dst_actor(const kernel::activity::CommImpl* comm_addr) const
 349 {
 350   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 351   mc_model_checker->get_remote_simulation().read(temp_comm, remote((kernel::activity::CommImpl*)comm_addr));
 352   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 353
 354   auto dst_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->dst_actor_.get()));
 355   return dst_proc;
 356 }
 357
 358 std::size_t mc_api::get_remote_heap_bytes() const
 359 {
 360   RemoteSimulation& process = mc_model_checker->get_remote_simulation();
 361   auto heap_bytes_used      = mmalloc_get_bytes_used_remote(process.get_heap()->heaplimit, process.get_malloc_info());
 362   return heap_bytes_used;
 363 }
 364
 365 void mc_api::session_initialize() const
 366 {
 367   session->initialize();
 368 }
 369
 370 void mc_api::mc_inc_visited_states() const
 371 {
 372   mc_model_checker->visited_states++;
 373 }
 374
 375 void mc_api::mc_inc_executed_trans() const
 376 {
 377   mc_model_checker->executed_transitions++;
 378 }
 379
 380 unsigned long mc_api::mc_get_visited_states() const
 381 {
 382   return mc_model_checker->visited_states;
 383 }
 384
 385 unsigned long mc_api::mc_get_executed_trans() const
 386 {
 387   return mc_model_checker->executed_transitions;
 388 }
 389
 390 bool mc_api::mc_check_deadlock() const
 391 {
 392   return mc_model_checker->checkDeadlock();
 393 }
 394
 395 void mc_api::mc_show_deadlock() const
 396 {
 397   MC_show_deadlock();
 398 }
 399
 400 smx_actor_t mc_api::simcall_get_issuer(s_smx_simcall const* req) const
 401 {
 402   return MC_smx_simcall_get_issuer(req);
 403 }
 404
 405 long mc_api::simcall_get_actor_id(s_smx_simcall const* req) const
 406 {
 407   return MC_smx_simcall_get_issuer(req)->get_pid();
 408 }
 409
 410 bool mc_api::mc_is_null() const
 411 {
 412   auto is_null = (mc_model_checker == nullptr) ? true : false;
 413   return is_null;
 414 }
 415
 416 Checker* mc_api::mc_get_checker() const
 417 {
 418   return mc_model_checker->getChecker();
 419 }
 420
 421 void mc_api::set_checker(Checker* const checker) const
 422 {
 423   xbt_assert(mc_model_checker);
 424   xbt_assert(mc_model_checker->getChecker() == nullptr);
 425   mc_model_checker->setChecker(checker);
 426 }
 427
 428 RemoteSimulation& mc_api::mc_get_remote_simulation() const
 429 {
 430   return mc_model_checker->get_remote_simulation();
 431 }
 432
 433 void mc_api::handle_simcall(Transition const& transition) const
 434 {
 435   mc_model_checker->handle_simcall(transition);
 436 }
 437
 438 void mc_api::mc_wait_for_requests() const
 439 {
 440   mc_model_checker->wait_for_requests();
 441 }
 442
 443 void mc_api::mc_exit(int status) const
 444 {
 445   mc_model_checker->exit(status);
 446 }
 447
 448 std::string const& mc_api::mc_get_host_name(std::string const& hostname) const
 449 {
 450   return mc_model_checker->get_host_name(hostname);
 451 }
 452
 453 void mc_api::dump_record_path() const
 454 {
 455   simgrid::mc::dumpRecordPath();
 456 }
 457
 458 smx_simcall_t mc_api::mc_state_choose_request(simgrid::mc::State* state) const
 459 {
 460   for (auto& actor : mc_model_checker->get_remote_simulation().actors()) {
 461     /* Only consider the actors that were marked as interleaving by the checker algorithm */
 462     if (not state->actor_states_[actor.copy.get_buffer()->get_pid()].is_todo())
 463       continue;
 464
 465     smx_simcall_t res = MC_state_choose_request_for_process(state, actor.copy.get_buffer());
 466     if (res)
 467       return res;
 468   }
 469   return nullptr;
 470 }
 471
 472 bool mc_api::request_depend(smx_simcall_t req1, smx_simcall_t req2) const
 473 {
 474   return simgrid::mc::request_depend(req1, req2);
 475 }
 476
 477 std::string mc_api::request_to_string(smx_simcall_t req, int value, RequestType request_type) const
 478 {
 479   xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
 480
 481   if (req->inspector_ != nullptr)
 482     return req->inspector_->to_string();
 483
 484   bool use_remote_comm = true;
 485   switch (request_type) {
 486     case simgrid::mc::RequestType::simix:
 487       use_remote_comm = true;
 488       break;
 489     case simgrid::mc::RequestType::executed:
 490     case simgrid::mc::RequestType::internal:
 491       use_remote_comm = false;
 492       break;
 493     default:
 494       THROW_IMPOSSIBLE;
 495   }
 496
 497   const char* type = nullptr;
 498   char* args       = nullptr;
 499
 500   smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 501
 502   switch (req->call_) {
 503     case Simcall::COMM_ISEND: {
 504       type     = "iSend";
 505       char* p  = pointer_to_string(simcall_comm_isend__get__src_buff(req));
 506       char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
 507       if (issuer->get_host())
 508         args = bprintf("src=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 509                        MC_smx_actor_get_name(issuer), p, bs);
 510       else
 511         args = bprintf("src=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
 512       xbt_free(bs);
 513       xbt_free(p);
 514       break;
 515     }
 516
 517     case Simcall::COMM_IRECV: {
 518       size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
 519       size_t size         = 0;
 520       if (remote_size)
 521         mc_model_checker->get_remote_simulation().read_bytes(&size, sizeof(size), remote(remote_size));
 522
 523       type     = "iRecv";
 524       char* p  = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
 525       char* bs = buff_size_to_string(size);
 526       if (issuer->get_host())
 527         args = bprintf("dst=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 528                        MC_smx_actor_get_name(issuer), p, bs);
 529       else
 530         args = bprintf("dst=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
 531       xbt_free(bs);
 532       xbt_free(p);
 533       break;
 534     }
 535
 536     case Simcall::COMM_WAIT: {
 537       simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 538       char* p;
 539       if (value == -1) {
 540         type = "WaitTimeout";
 541         p    = pointer_to_string(remote_act);
 542         args = bprintf("comm=%s", p);
 543       } else {
 544         type = "Wait";
 545         p    = pointer_to_string(remote_act);
 546
 547         simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 548         const simgrid::kernel::activity::CommImpl* act;
 549         if (use_remote_comm) {
 550           mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 551           act = temp_synchro.get_buffer();
 552         } else
 553           act = remote_act;
 554
 555         smx_actor_t src_proc =
 556             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 557         smx_actor_t dst_proc =
 558             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 559         args = bprintf("comm=%s [(%ld)%s (%s)-> (%ld)%s (%s)]", p, src_proc ? src_proc->get_pid() : 0,
 560                        src_proc ? MC_smx_actor_get_host_name(src_proc) : "",
 561                        src_proc ? MC_smx_actor_get_name(src_proc) : "", dst_proc ? dst_proc->get_pid() : 0,
 562                        dst_proc ? MC_smx_actor_get_host_name(dst_proc) : "",
 563                        dst_proc ? MC_smx_actor_get_name(dst_proc) : "");
 564       }
 565       xbt_free(p);
 566       break;
 567     }
 568
 569     case Simcall::COMM_TEST: {
 570       simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_test__getraw__comm(req);
 571       simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 572       const simgrid::kernel::activity::CommImpl* act;
 573       if (use_remote_comm) {
 574         mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 575         act = temp_synchro.get_buffer();
 576       } else
 577         act = remote_act;
 578
 579       char* p;
 580       if (act->src_actor_.get() == nullptr || act->dst_actor_.get() == nullptr) {
 581         type = "Test FALSE";
 582         p    = pointer_to_string(remote_act);
 583         args = bprintf("comm=%s", p);
 584       } else {
 585         type = "Test TRUE";
 586         p    = pointer_to_string(remote_act);
 587
 588         smx_actor_t src_proc =
 589             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 590         smx_actor_t dst_proc =
 591             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 592         args = bprintf("comm=%s [(%ld)%s (%s) -> (%ld)%s (%s)]", p, src_proc->get_pid(),
 593                        MC_smx_actor_get_name(src_proc), MC_smx_actor_get_host_name(src_proc), dst_proc->get_pid(),
 594                        MC_smx_actor_get_name(dst_proc), MC_smx_actor_get_host_name(dst_proc));
 595       }
 596       xbt_free(p);
 597       break;
 598     }
 599
 600     case Simcall::COMM_WAITANY: {
 601       type         = "WaitAny";
 602       size_t count = simcall_comm_waitany__get__count(req);
 603       if (count > 0) {
 604         simgrid::kernel::activity::CommImpl* remote_sync;
 605         remote_sync =
 606             mc_model_checker->get_remote_simulation().read(remote(simcall_comm_waitany__get__comms(req) + value));
 607         char* p = pointer_to_string(remote_sync);
 608         args    = bprintf("comm=%s (%d of %zu)", p, value + 1, count);
 609         xbt_free(p);
 610       } else
 611         args = bprintf("comm at idx %d", value);
 612       break;
 613     }
 614
 615     case Simcall::COMM_TESTANY:
 616       if (value == -1) {
 617         type = "TestAny FALSE";
 618         args = xbt_strdup("-");
 619       } else {
 620         type = "TestAny";
 621         args = bprintf("(%d of %zu)", value + 1, simcall_comm_testany__get__count(req));
 622       }
 623       break;
 624
 625     case Simcall::MUTEX_TRYLOCK:
 626     case Simcall::MUTEX_LOCK: {
 627       if (req->call_ == Simcall::MUTEX_LOCK)
 628         type = "Mutex LOCK";
 629       else
 630         type = "Mutex TRYLOCK";
 631
 632       simgrid::mc::Remote<simgrid::kernel::activity::MutexImpl> mutex;
 633       mc_model_checker->get_remote_simulation().read_bytes(mutex.get_buffer(), sizeof(mutex),
 634                                                            remote(req->call_ == Simcall::MUTEX_LOCK
 635                                                                       ? simcall_mutex_lock__get__mutex(req)
 636                                                                       : simcall_mutex_trylock__get__mutex(req)));
 637       args = bprintf("locked = %d, owner = %d, sleeping = n/a", mutex.get_buffer()->is_locked(),
 638                      mutex.get_buffer()->get_owner() != nullptr
 639                          ? (int)mc_model_checker->get_remote_simulation()
 640                                .resolve_actor(simgrid::mc::remote(mutex.get_buffer()->get_owner()))
 641                                ->get_pid()
 642                          : -1);
 643       break;
 644     }
 645
 646     case Simcall::MC_RANDOM:
 647       type = "MC_RANDOM";
 648       args = bprintf("%d", value);
 649       break;
 650
 651     default:
 652       type = SIMIX_simcall_name(req->call_);
 653       args = bprintf("??");
 654       break;
 655   }
 656
 657   std::string str;
 658   if (args != nullptr)
 659     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s(%s)", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 660                                       MC_smx_actor_get_name(issuer), type, args);
 661   else
 662     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s ", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 663                                       MC_smx_actor_get_name(issuer), type);
 664   xbt_free(args);
 665   return str;
 666 }
 667
 668 std::string mc_api::request_get_dot_output(smx_simcall_t req, int value) const
 669 {
 670   const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 671   const char* color        = get_color(issuer->get_pid() - 1);
 672
 673   if (req->inspector_ != nullptr)
 674     return simgrid::xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s",
 675                                        req->inspector_->dot_label().c_str(), color, color);
 676
 677   std::string label;
 678
 679   switch (req->call_) {
 680     case Simcall::COMM_ISEND:
 681       if (issuer->get_host())
 682         label = xbt::string_printf("[(%ld)%s] iSend", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 683       else
 684         label = bprintf("[(%ld)] iSend", issuer->get_pid());
 685       break;
 686
 687     case Simcall::COMM_IRECV:
 688       if (issuer->get_host())
 689         label = xbt::string_printf("[(%ld)%s] iRecv", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 690       else
 691         label = xbt::string_printf("[(%ld)] iRecv", issuer->get_pid());
 692       break;
 693
 694     case Simcall::COMM_WAIT:
 695       if (value == -1) {
 696         if (issuer->get_host())
 697           label = xbt::string_printf("[(%ld)%s] WaitTimeout", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 698         else
 699           label = xbt::string_printf("[(%ld)] WaitTimeout", issuer->get_pid());
 700       } else {
 701         kernel::activity::ActivityImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 702         Remote<kernel::activity::CommImpl> temp_comm;
 703         mc_model_checker->get_remote_simulation().read(temp_comm,
 704                                                        remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 705         const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 706
 707         const kernel::actor::ActorImpl* src_proc =
 708             mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->src_actor_.get()));
 709         const kernel::actor::ActorImpl* dst_proc =
 710             mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->dst_actor_.get()));
 711         if (issuer->get_host())
 712           label =
 713               xbt::string_printf("[(%ld)%s] Wait [(%ld)->(%ld)]", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 714                                  src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 715         else
 716           label = xbt::string_printf("[(%ld)] Wait [(%ld)->(%ld)]", issuer->get_pid(),
 717                                      src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 718       }
 719       break;
 720
 721     case Simcall::COMM_TEST: {
 722       kernel::activity::ActivityImpl* remote_act = simcall_comm_test__getraw__comm(req);
 723       Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 724       mc_model_checker->get_remote_simulation().read(temp_comm,
 725                                                      remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 726       const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 727       if (comm->src_actor_.get() == nullptr || comm->dst_actor_.get() == nullptr) {
 728         if (issuer->get_host())
 729           label = xbt::string_printf("[(%ld)%s] Test FALSE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 730         else
 731           label = bprintf("[(%ld)] Test FALSE", issuer->get_pid());
 732       } else {
 733         if (issuer->get_host())
 734           label = xbt::string_printf("[(%ld)%s] Test TRUE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 735         else
 736           label = xbt::string_printf("[(%ld)] Test TRUE", issuer->get_pid());
 737       }
 738       break;
 739     }
 740
 741     case Simcall::COMM_WAITANY: {
 742       size_t comms_size = simcall_comm_waitany__get__count(req);
 743       if (issuer->get_host())
 744         label = xbt::string_printf("[(%ld)%s] WaitAny [%d of %zu]", issuer->get_pid(),
 745                                    MC_smx_actor_get_host_name(issuer), value + 1, comms_size);
 746       else
 747         label = xbt::string_printf("[(%ld)] WaitAny [%d of %zu]", issuer->get_pid(), value + 1, comms_size);
 748       break;
 749     }
 750
 751     case Simcall::COMM_TESTANY:
 752       if (value == -1) {
 753         if (issuer->get_host())
 754           label = xbt::string_printf("[(%ld)%s] TestAny FALSE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 755         else
 756           label = xbt::string_printf("[(%ld)] TestAny FALSE", issuer->get_pid());
 757       } else {
 758         if (issuer->get_host())
 759           label =
 760               xbt::string_printf("[(%ld)%s] TestAny TRUE [%d of %lu]", issuer->get_pid(),
 761                                  MC_smx_actor_get_host_name(issuer), value + 1, simcall_comm_testany__get__count(req));
 762         else
 763           label = xbt::string_printf("[(%ld)] TestAny TRUE [%d of %lu]", issuer->get_pid(), value + 1,
 764                                      simcall_comm_testany__get__count(req));
 765       }
 766       break;
 767
 768     case Simcall::MUTEX_TRYLOCK:
 769       label = xbt::string_printf("[(%ld)] Mutex TRYLOCK", issuer->get_pid());
 770       break;
 771
 772     case Simcall::MUTEX_LOCK:
 773       label = xbt::string_printf("[(%ld)] Mutex LOCK", issuer->get_pid());
 774       break;
 775
 776     case Simcall::MC_RANDOM:
 777       if (issuer->get_host())
 778         label = xbt::string_printf("[(%ld)%s] MC_RANDOM (%d)", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 779                                    value);
 780       else
 781         label = xbt::string_printf("[(%ld)] MC_RANDOM (%d)", issuer->get_pid(), value);
 782       break;
 783
 784     default:
 785       THROW_UNIMPLEMENTED;
 786   }
 787
 788   return xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s", label.c_str(), color, color);
 789 }
 790
 791 const char* mc_api::simcall_get_name(simgrid::simix::Simcall kind) const
 792 {
 793   return SIMIX_simcall_name(kind);
 794 }
 795
 796 #if HAVE_SMPI
 797 int mc_api::get_smpi_request_tag(smx_simcall_t const& simcall, simgrid::simix::Simcall type) const
 798 {
 799   simgrid::smpi::Request mpi_request;
 800   void* simcall_data = nullptr;
 801   if (type == Simcall::COMM_ISEND)
 802     simcall_data = simcall_comm_isend__get__data(simcall);
 803   else if (type == Simcall::COMM_IRECV)
 804     simcall_data = simcall_comm_irecv__get__data(simcall);
 805   mc_model_checker->get_remote_simulation().read(&mpi_request, remote(static_cast<smpi::Request*>(simcall_data)));
 806   return mpi_request.tag();
 807 }
 808 #endif
 809
 810 void mc_api::restore_state(std::shared_ptr<simgrid::mc::Snapshot> system_state) const
 811 {
 812   system_state->restore(&mc_model_checker->get_remote_simulation());
 813 }
 814
 815 void mc_api::log_state() const
 816 {
 817   session->log_state();
 818 }
 819
 820 bool mc_api::snapshot_equal(const Snapshot* s1, const Snapshot* s2) const
 821 {
 822   return simgrid::mc::snapshot_equal(s1, s2);
 823 }
 824
 825 simgrid::mc::Snapshot* mc_api::take_snapshot(int num_state) const
 826 {
 827   auto snapshot = new simgrid::mc::Snapshot(num_state);
 828   return snapshot;
 829 }
 830
 831 void mc_api::s_close() const
 832 {
 833   session->close();
 834 }
 835
 836 void mc_api::restore_initial_state() const
 837 {
 838   session->restore_initial_state();
 839 }
 840
 841 void mc_api::execute(Transition const& transition) const
 842 {
 843   session->execute(transition);
 844 }
 845
 846 #if SIMGRID_HAVE_MC
 847 void mc_api::automaton_load(const char* file) const
 848 {
 849   MC_automaton_load(file);
 850 }
 851 #endif
 852
 853 std::vector<int> mc_api::automaton_propositional_symbol_evaluate() const
 854 {
 855   unsigned int cursor = 0;
 856   std::vector<int> values;
 857   xbt_automaton_propositional_symbol_t ps = nullptr;
 858   xbt_dynar_foreach (mc::property_automaton->propositional_symbols, cursor, ps)
 859     values.push_back(xbt_automaton_propositional_symbol_evaluate(ps));
 860   return values;
 861 }
 862
 863 std::vector<xbt_automaton_state_t> mc_api::get_automaton_state() const
 864 {
 865   std::vector<xbt_automaton_state_t> automaton_stack;
 866   unsigned int cursor = 0;
 867   xbt_automaton_state_t automaton_state;
 868   xbt_dynar_foreach (mc::property_automaton->states, cursor, automaton_state)
 869     if (automaton_state->type == -1)
 870       automaton_stack.push_back(automaton_state);
 871   return automaton_stack;
 872 }
 873
 874 int mc_api::compare_automaton_exp_label(const xbt_automaton_exp_label* l) const
 875 {
 876   unsigned int cursor                    = 0;
 877   xbt_automaton_propositional_symbol_t p = nullptr;
 878   xbt_dynar_foreach (simgrid::mc::property_automaton->propositional_symbols, cursor, p) {
 879     if (std::strcmp(xbt_automaton_propositional_symbol_get_name(p), l->u.predicat) == 0)
 880       return cursor;
 881   }
 882   return -1;
 883 }
 884
 885 void mc_api::set_property_automaton(xbt_automaton_state_t const& automaton_state) const
 886 {
 887   mc::property_automaton->current_state = automaton_state;
 888 }
 889
 890 xbt_automaton_exp_label_t mc_api::get_automaton_transition_label(xbt_dynar_t const& dynar, int index) const
 891 {
 892   const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
 893   return transition->label;
 894 }
 895
 896 xbt_automaton_state_t mc_api::get_automaton_transition_dst(xbt_dynar_t const& dynar, int index) const
 897 {
 898   const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
 899   return transition->dst;
 900 }
 901
 902 } // namespace mc
 903 } // namespace simgrid