src/mc/api.cpp

   1 #include "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
  12 #include "src/mc/remote/RemoteSimulation.hpp"
  13 #include <xbt/asserts.h>
  14 #include <xbt/log.h>
  15 #include "simgrid/s4u/Host.hpp"
  16 #include "xbt/string.hpp"
  17 #if HAVE_SMPI
  18 #include "src/smpi/include/smpi_request.hpp"
  19 #endif
  20
  21 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(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(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(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->state_ == simgrid::kernel::activity::State::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 simgrid::kernel::activity::CommImpl* Api::get_comm(smx_simcall_t const r) const
 207 {
 208   switch (r->call_) {
 209     case Simcall::COMM_WAIT:
 210       return simcall_comm_wait__getraw__comm(r);
 211     case Simcall::COMM_TEST:
 212       return simcall_comm_test__getraw__comm(r);
 213     default:
 214       return nullptr;
 215   }
 216 }
 217
 218 /** Statically "upcast" a s_smx_actor_t into an ActorInformation
 219  *
 220  *  This gets 'actorInfo' from '&actorInfo->copy'. It upcasts in the
 221  *  sense that we could achieve the same thing by having ActorInformation
 222  *  inherit from s_smx_actor_t but we don't really want to do that.
 223  */
 224 simgrid::mc::ActorInformation* Api::actor_info_cast(smx_actor_t actor) const
 225 {
 226   simgrid::mc::ActorInformation temp;
 227   std::size_t offset = (char*)temp.copy.get_buffer() - (char*)&temp;
 228
 229   auto* process_info = reinterpret_cast<simgrid::mc::ActorInformation*>((char*)actor - offset);
 230   return process_info;
 231 }
 232
 233 // Does half the job
 234 bool Api::request_depend_asymmetric(smx_simcall_t r1, smx_simcall_t r2) const
 235 {
 236   if (r1->call_ == Simcall::COMM_ISEND && r2->call_ == Simcall::COMM_IRECV)
 237     return false;
 238
 239   if (r1->call_ == Simcall::COMM_IRECV && r2->call_ == Simcall::COMM_ISEND)
 240     return false;
 241
 242   // Those are internal requests, we do not need indirection because those objects are copies:
 243   const kernel::activity::CommImpl* synchro1 = get_comm(r1);
 244   const kernel::activity::CommImpl* synchro2 = get_comm(r2);
 245
 246   if ((r1->call_ == Simcall::COMM_ISEND || r1->call_ == Simcall::COMM_IRECV) && r2->call_ == Simcall::COMM_WAIT) {
 247     auto mbox                                                  = get_mbox_remote_addr(r1);
 248     RemotePtr<kernel::activity::MailboxImpl> synchro2_mbox_cpy = remote(synchro2->mbox_cpy);
 249
 250     if (mbox != synchro2_mbox_cpy && simcall_comm_wait__get__timeout(r2) <= 0)
 251       return false;
 252
 253     if ((r1->issuer_ != synchro2->src_actor_.get()) && (r1->issuer_ != synchro2->dst_actor_.get()) &&
 254         simcall_comm_wait__get__timeout(r2) <= 0)
 255       return false;
 256
 257     if ((r1->call_ == Simcall::COMM_ISEND) && (synchro2->type_ == kernel::activity::CommImpl::Type::SEND) &&
 258         (synchro2->src_buff_ != simcall_comm_isend__get__src_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
 259       return false;
 260
 261     if ((r1->call_ == Simcall::COMM_IRECV) && (synchro2->type_ == kernel::activity::CommImpl::Type::RECEIVE) &&
 262         (synchro2->dst_buff_ != simcall_comm_irecv__get__dst_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
 263       return false;
 264   }
 265
 266   /* FIXME: the following rule assumes that the result of the isend/irecv call is not stored in a buffer used in the
 267    * test call. */
 268 #if 0
 269   if((r1->call == Simcall::COMM_ISEND || r1->call == Simcall::COMM_IRECV)
 270       &&  r2->call == Simcall::COMM_TEST)
 271     return false;
 272 #endif
 273
 274   if (r1->call_ == Simcall::COMM_WAIT && (r2->call_ == Simcall::COMM_WAIT || r2->call_ == Simcall::COMM_TEST) &&
 275       (synchro1->src_actor_.get() == nullptr || synchro1->dst_actor_.get() == nullptr))
 276     return false;
 277
 278   if (r1->call_ == Simcall::COMM_TEST &&
 279       (simcall_comm_test__get__comm(r1) == nullptr || synchro1->src_buff_ == nullptr || synchro1->dst_buff_ == nullptr))
 280     return false;
 281
 282   if (r1->call_ == Simcall::COMM_TEST && r2->call_ == Simcall::COMM_WAIT &&
 283       synchro1->src_buff_ == synchro2->src_buff_ && synchro1->dst_buff_ == synchro2->dst_buff_)
 284     return false;
 285
 286   if (r1->call_ == Simcall::COMM_WAIT && r2->call_ == Simcall::COMM_TEST && synchro1->src_buff_ != nullptr &&
 287       synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr && synchro2->dst_buff_ != nullptr &&
 288       synchro1->dst_buff_ != synchro2->src_buff_ && synchro1->dst_buff_ != synchro2->dst_buff_ &&
 289       synchro2->dst_buff_ != synchro1->src_buff_)
 290     return false;
 291
 292   return true;
 293 }
 294
 295 const char* Api::actor_get_host_name(smx_actor_t actor) const
 296 {
 297   if (mc_model_checker == nullptr)
 298     return actor->get_host()->get_cname();
 299
 300   const simgrid::mc::RemoteSimulation* process = &mc_model_checker->get_remote_simulation();
 301
 302   // Read the simgrid::xbt::string in the MCed process:
 303   simgrid::mc::ActorInformation* info = actor_info_cast(actor);
 304   auto remote_string_address =
 305       remote(reinterpret_cast<const simgrid::xbt::string_data*>(&actor->get_host()->get_name()));
 306   simgrid::xbt::string_data remote_string = process->read(remote_string_address);
 307   std::vector<char> hostname(remote_string.len + 1);
 308   // no need to read the terminating null byte, and thus hostname[remote_string.len] is guaranteed to be '\0'
 309   process->read_bytes(hostname.data(), remote_string.len, remote(remote_string.data));
 310   info->hostname = mc_model_checker->get_host_name(hostname.data()).c_str();
 311   return info->hostname;
 312 }
 313
 314 void Api::initialize(char** argv) const
 315 {
 316   simgrid::mc::session = new simgrid::mc::Session([argv] {
 317     int i = 1;
 318     while (argv[i] != nullptr && argv[i][0] == '-')
 319       i++;
 320     xbt_assert(argv[i] != nullptr,
 321                "Unable to find a binary to exec on the command line. Did you only pass config flags?");
 322     execvp(argv[i], argv + i);
 323     xbt_die("The model-checked process failed to exec(): %s", strerror(errno));
 324   });
 325 }
 326
 327 std::vector<simgrid::mc::ActorInformation>& Api::get_actors() const
 328 {
 329   return mc_model_checker->get_remote_simulation().actors();
 330 }
 331
 332 bool Api::actor_is_enabled(aid_t pid) const
 333 {
 334   return session->actor_is_enabled(pid);
 335 }
 336
 337 unsigned long Api::get_maxpid() const
 338 {
 339   return MC_smx_get_maxpid();
 340 }
 341
 342 int Api::get_actors_size() const
 343 {
 344   return mc_model_checker->get_remote_simulation().actors().size();
 345 }
 346
 347 RemotePtr<kernel::activity::CommImpl> Api::get_comm_isend_raw_addr(smx_simcall_t request) const
 348 {
 349   auto comm_addr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::ActivityImpl*>(request->result_);
 350   return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
 351 }
 352
 353 RemotePtr<kernel::activity::CommImpl> Api::get_comm_irecv_raw_addr(smx_simcall_t request) const
 354 {
 355   auto comm_addr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::ActivityImpl*>(request->result_);
 356   return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
 357 }
 358
 359 RemotePtr<kernel::activity::CommImpl> Api::get_comm_wait_raw_addr(smx_simcall_t request) const
 360 {
 361   auto comm_addr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::CommImpl*>(request->args_[0]);
 362   return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
 363 }
 364
 365 RemotePtr<kernel::activity::CommImpl> Api::get_comm_waitany_raw_addr(smx_simcall_t request, int value) const
 366 {
 367   auto addr      = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::CommImpl**>(request->args_[0]) + value;
 368   auto comm_addr = mc_model_checker->get_remote_simulation().read(remote(addr));
 369   return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
 370 }
 371
 372 std::string Api::get_pattern_comm_rdv(RemotePtr<kernel::activity::CommImpl> const& addr) const
 373 {
 374   Remote<kernel::activity::CommImpl> temp_synchro;
 375   mc_model_checker->get_remote_simulation().read(temp_synchro, addr);
 376   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 377
 378   char* remote_name = mc_model_checker->get_remote_simulation().read<char*>(RemotePtr<char*>(
 379       (uint64_t)(synchro->get_mailbox() ? &synchro->get_mailbox()->get_name() : &synchro->mbox_cpy->get_name())));
 380   auto rdv          = mc_model_checker->get_remote_simulation().read_string(RemotePtr<char>(remote_name));
 381   return rdv;
 382 }
 383
 384 unsigned long Api::get_pattern_comm_src_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
 385 {
 386   Remote<kernel::activity::CommImpl> temp_synchro;
 387   mc_model_checker->get_remote_simulation().read(temp_synchro, addr);
 388   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 389   auto src_proc =
 390       mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->src_actor_.get()))->get_pid();
 391   return src_proc;
 392 }
 393
 394 unsigned long Api::get_pattern_comm_dst_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
 395 {
 396   Remote<kernel::activity::CommImpl> temp_synchro;
 397   mc_model_checker->get_remote_simulation().read(temp_synchro, addr);
 398   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 399   auto src_proc =
 400       mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->dst_actor_.get()))->get_pid();
 401   return src_proc;
 402 }
 403
 404 std::vector<char> Api::get_pattern_comm_data(RemotePtr<kernel::activity::CommImpl> const& addr) const
 405 {
 406   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 407   mc_model_checker->get_remote_simulation().read(temp_comm, addr);
 408   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 409
 410   std::vector<char> buffer{};
 411   if (comm->src_buff_ != nullptr) {
 412     buffer.resize(comm->src_buff_size_);
 413     mc_model_checker->get_remote_simulation().read_bytes(buffer.data(), buffer.size(), remote(comm->src_buff_));
 414   }
 415   return buffer;
 416 }
 417
 418 const char* Api::get_actor_host_name(smx_actor_t actor) const
 419 {
 420   const char* host_name = actor_get_host_name(actor);
 421   return host_name;
 422 }
 423
 424 #if HAVE_SMPI
 425 bool Api::check_send_request_detached(smx_simcall_t const& simcall) const
 426 {
 427   simgrid::smpi::Request mpi_request;
 428   mc_model_checker->get_remote_simulation().read(
 429       &mpi_request, remote(static_cast<smpi::Request*>(simcall_comm_isend__get__data(simcall))));
 430   return mpi_request.detached();
 431 }
 432 #endif
 433
 434 smx_actor_t Api::get_src_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
 435 {
 436   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 437   mc_model_checker->get_remote_simulation().read(temp_comm, comm_addr);
 438   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 439
 440   auto src_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->src_actor_.get()));
 441   return src_proc;
 442 }
 443
 444 smx_actor_t Api::get_dst_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
 445 {
 446   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 447   mc_model_checker->get_remote_simulation().read(temp_comm, comm_addr);
 448   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 449
 450   auto dst_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->dst_actor_.get()));
 451   return dst_proc;
 452 }
 453
 454 std::size_t Api::get_remote_heap_bytes() const
 455 {
 456   RemoteSimulation& process = mc_model_checker->get_remote_simulation();
 457   auto heap_bytes_used      = mmalloc_get_bytes_used_remote(process.get_heap()->heaplimit, process.get_malloc_info());
 458   return heap_bytes_used;
 459 }
 460
 461 void Api::session_initialize() const
 462 {
 463   session->initialize();
 464 }
 465
 466 void Api::mc_inc_visited_states() const
 467 {
 468   mc_model_checker->visited_states++;
 469 }
 470
 471 void Api::mc_inc_executed_trans() const
 472 {
 473   mc_model_checker->executed_transitions++;
 474 }
 475
 476 unsigned long Api::mc_get_visited_states() const
 477 {
 478   return mc_model_checker->visited_states;
 479 }
 480
 481 unsigned long Api::mc_get_executed_trans() const
 482 {
 483   return mc_model_checker->executed_transitions;
 484 }
 485
 486 bool Api::mc_check_deadlock() const
 487 {
 488   return mc_model_checker->checkDeadlock();
 489 }
 490
 491 void Api::mc_show_deadlock() const
 492 {
 493   MC_show_deadlock();
 494 }
 495
 496 /** Get the issuer of a simcall (`req->issuer`)
 497  *
 498  *  In split-process mode, it does the black magic necessary to get an address
 499  *  of a (shallow) copy of the data structure the issuer SIMIX actor in the local
 500  *  address space.
 501  *
 502  *  @param process the MCed process
 503  *  @param req     the simcall (copied in the local process)
 504  */
 505 smx_actor_t Api::simcall_get_issuer(s_smx_simcall const* req) const
 506 {
 507   xbt_assert(mc_model_checker != nullptr);
 508
 509   // This is the address of the smx_actor in the MCed process:
 510   auto address = simgrid::mc::remote(req->issuer_);
 511
 512   // Lookup by address:
 513   for (auto& actor : mc_model_checker->get_remote_simulation().actors())
 514     if (actor.address == address)
 515       return actor.copy.get_buffer();
 516   for (auto& actor : mc_model_checker->get_remote_simulation().dead_actors())
 517     if (actor.address == address)
 518       return actor.copy.get_buffer();
 519
 520   xbt_die("Issuer not found");
 521 }
 522
 523 long Api::simcall_get_actor_id(s_smx_simcall const* req) const
 524 {
 525   return simcall_get_issuer(req)->get_pid();
 526 }
 527
 528 RemotePtr<kernel::activity::MailboxImpl> Api::get_mbox_remote_addr(smx_simcall_t const req) const
 529 {
 530   RemotePtr<kernel::activity::MailboxImpl> mbox_addr;
 531   switch (req->call_) {
 532     case Simcall::COMM_ISEND:
 533     case Simcall::COMM_IRECV: {
 534       auto mbox_addr_ptr = simix::unmarshal<smx_mailbox_t>(req->args_[1]);
 535       mbox_addr          = remote(mbox_addr_ptr);
 536       break;
 537     }
 538     default:
 539       mbox_addr = RemotePtr<kernel::activity::MailboxImpl>();
 540       break;
 541   }
 542   return mbox_addr;
 543 }
 544
 545 RemotePtr<kernel::activity::ActivityImpl> Api::get_comm_remote_addr(smx_simcall_t const req) const
 546 {
 547   RemotePtr<kernel::activity::ActivityImpl> comm_addr;
 548   switch (req->call_) {
 549     case Simcall::COMM_ISEND:
 550     case Simcall::COMM_IRECV: {
 551       auto comm_addr_ptr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::ActivityImpl*>(req->result_);
 552       comm_addr          = remote(comm_addr_ptr);
 553       break;
 554     }
 555     default:
 556       comm_addr = RemotePtr<kernel::activity::ActivityImpl>();
 557       break;
 558   }
 559   return comm_addr;
 560 }
 561
 562 bool Api::mc_is_null() const
 563 {
 564   auto is_null = (mc_model_checker == nullptr) ? true : false;
 565   return is_null;
 566 }
 567
 568 Checker* Api::mc_get_checker() const
 569 {
 570   return mc_model_checker->getChecker();
 571 }
 572
 573 void Api::set_checker(Checker* const checker) const
 574 {
 575   xbt_assert(mc_model_checker);
 576   xbt_assert(mc_model_checker->getChecker() == nullptr);
 577   mc_model_checker->setChecker(checker);
 578 }
 579
 580 void Api::handle_simcall(Transition const& transition) const
 581 {
 582   mc_model_checker->handle_simcall(transition);
 583 }
 584
 585 void Api::mc_wait_for_requests() const
 586 {
 587   mc_model_checker->wait_for_requests();
 588 }
 589
 590 void Api::mc_exit(int status) const
 591 {
 592   mc_model_checker->exit(status);
 593 }
 594
 595 std::string const& Api::mc_get_host_name(std::string const& hostname) const
 596 {
 597   return mc_model_checker->get_host_name(hostname);
 598 }
 599
 600 void Api::dump_record_path() const
 601 {
 602   simgrid::mc::dumpRecordPath();
 603 }
 604
 605 smx_simcall_t Api::mc_state_choose_request(simgrid::mc::State* state) const
 606 {
 607   for (auto& actor : mc_model_checker->get_remote_simulation().actors()) {
 608     /* Only consider the actors that were marked as interleaving by the checker algorithm */
 609     if (not state->actor_states_[actor.copy.get_buffer()->get_pid()].is_todo())
 610       continue;
 611
 612     smx_simcall_t res = MC_state_choose_request_for_process(state, actor.copy.get_buffer());
 613     if (res)
 614       return res;
 615   }
 616   return nullptr;
 617 }
 618
 619 std::list<udpor_transition_t> Api::get_enabled_transitions(simgrid::mc::State* state)
 620 {
 621   std::list<udpor_transition_t> tr_list{};
 622
 623   for (auto& actor : mc_model_checker->get_remote_simulation().actors()) {
 624     auto actor_pid  = actor.copy.get_buffer()->get_pid();
 625     auto actor_impl = actor.copy.get_buffer();
 626
 627     // Only consider the actors that were marked as interleaving by the checker algorithm
 628     if (not state->actor_states_[actor_pid].is_todo())
 629       continue;
 630     // Not executable in the application
 631     if (not simgrid::mc::actor_is_enabled(actor_impl))
 632       continue;
 633
 634     udpor_transition_t udpor_transition = std::unique_ptr<s_udpor_transition>(new s_udpor_transition());
 635     Simcall simcall_call                = actor_impl->simcall_.call_;
 636     smx_simcall_t simcall               = &actor_impl->simcall_;
 637     udpor_transition->call_             = simcall_call;
 638     switch (simcall_call) {
 639       case Simcall::COMM_ISEND:
 640       case Simcall::COMM_IRECV: {
 641         udpor_transition->mbox_remote_addr = get_mbox_remote_addr(simcall);
 642         udpor_transition->comm_remote_addr = get_comm_remote_addr(simcall);
 643         break;
 644       }
 645
 646       default:
 647         break;
 648     }
 649     tr_list.emplace_back(std::move(udpor_transition));
 650   }
 651
 652   return tr_list;
 653 }
 654
 655 bool Api::simcall_check_dependency(smx_simcall_t const req1, smx_simcall_t const req2) const
 656 {
 657   if (req1->issuer_ == req2->issuer_)
 658     return false;
 659
 660   /* Wait with timeout transitions are not considered by the independence theorem, thus we consider them as dependent
 661    * with all other transitions */
 662   if ((req1->call_ == Simcall::COMM_WAIT && simcall_comm_wait__get__timeout(req1) > 0) ||
 663       (req2->call_ == Simcall::COMM_WAIT && simcall_comm_wait__get__timeout(req2) > 0))
 664     return true;
 665
 666   if (req1->call_ != req2->call_)
 667     return request_depend_asymmetric(req1, req2) && request_depend_asymmetric(req2, req1);
 668
 669   // Those are internal requests, we do not need indirection because those objects are copies:
 670   const kernel::activity::CommImpl* synchro1 = get_comm(req1);
 671   const kernel::activity::CommImpl* synchro2 = get_comm(req2);
 672
 673   switch (req1->call_) {
 674     case Simcall::COMM_ISEND:
 675       return simcall_comm_isend__get__mbox(req1) == simcall_comm_isend__get__mbox(req2);
 676     case Simcall::COMM_IRECV:
 677       return simcall_comm_irecv__get__mbox(req1) == simcall_comm_irecv__get__mbox(req2);
 678     case Simcall::COMM_WAIT:
 679       if (synchro1->src_buff_ == synchro2->src_buff_ && synchro1->dst_buff_ == synchro2->dst_buff_)
 680         return false;
 681       if (synchro1->src_buff_ != nullptr && synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr &&
 682           synchro2->dst_buff_ != nullptr && synchro1->dst_buff_ != synchro2->src_buff_ &&
 683           synchro1->dst_buff_ != synchro2->dst_buff_ && synchro2->dst_buff_ != synchro1->src_buff_)
 684         return false;
 685       return true;
 686     default:
 687       return true;
 688   }
 689 }
 690
 691 std::string Api::request_to_string(smx_simcall_t req, int value, RequestType request_type) const
 692 {
 693   xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
 694
 695   if (req->inspector_ != nullptr)
 696     return req->inspector_->to_string();
 697
 698   bool use_remote_comm = true;
 699   switch (request_type) {
 700     case simgrid::mc::RequestType::simix:
 701       use_remote_comm = true;
 702       break;
 703     case simgrid::mc::RequestType::executed:
 704     case simgrid::mc::RequestType::internal:
 705       use_remote_comm = false;
 706       break;
 707     default:
 708       THROW_IMPOSSIBLE;
 709   }
 710
 711   const char* type = nullptr;
 712   char* args       = nullptr;
 713
 714   smx_actor_t issuer = simcall_get_issuer(req);
 715
 716   switch (req->call_) {
 717     case Simcall::COMM_ISEND: {
 718       type     = "iSend";
 719       char* p  = pointer_to_string(simcall_comm_isend__get__src_buff(req));
 720       char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
 721       if (issuer->get_host())
 722         args = bprintf("src=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), actor_get_host_name(issuer),
 723                        MC_smx_actor_get_name(issuer), p, bs);
 724       else
 725         args = bprintf("src=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
 726       xbt_free(bs);
 727       xbt_free(p);
 728       break;
 729     }
 730
 731     case Simcall::COMM_IRECV: {
 732       size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
 733       size_t size         = 0;
 734       if (remote_size)
 735         mc_model_checker->get_remote_simulation().read_bytes(&size, sizeof(size), remote(remote_size));
 736
 737       type     = "iRecv";
 738       char* p  = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
 739       char* bs = buff_size_to_string(size);
 740       if (issuer->get_host())
 741         args = bprintf("dst=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), actor_get_host_name(issuer),
 742                        MC_smx_actor_get_name(issuer), p, bs);
 743       else
 744         args = bprintf("dst=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
 745       xbt_free(bs);
 746       xbt_free(p);
 747       break;
 748     }
 749
 750     case Simcall::COMM_WAIT: {
 751       simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 752       char* p;
 753       if (value == -1) {
 754         type = "WaitTimeout";
 755         p    = pointer_to_string(remote_act);
 756         args = bprintf("comm=%s", p);
 757       } else {
 758         type = "Wait";
 759         p    = pointer_to_string(remote_act);
 760
 761         simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 762         const simgrid::kernel::activity::CommImpl* act;
 763         if (use_remote_comm) {
 764           mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 765           act = temp_synchro.get_buffer();
 766         } else
 767           act = remote_act;
 768
 769         smx_actor_t src_proc =
 770             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 771         smx_actor_t dst_proc =
 772             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 773         args = bprintf("comm=%s [(%ld)%s (%s)-> (%ld)%s (%s)]", p, src_proc ? src_proc->get_pid() : 0,
 774                        src_proc ? actor_get_host_name(src_proc) : "",
 775                        src_proc ? MC_smx_actor_get_name(src_proc) : "", dst_proc ? dst_proc->get_pid() : 0,
 776                        dst_proc ? actor_get_host_name(dst_proc) : "",
 777                        dst_proc ? MC_smx_actor_get_name(dst_proc) : "");
 778       }
 779       xbt_free(p);
 780       break;
 781     }
 782
 783     case Simcall::COMM_TEST: {
 784       simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_test__getraw__comm(req);
 785       simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 786       const simgrid::kernel::activity::CommImpl* act;
 787       if (use_remote_comm) {
 788         mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 789         act = temp_synchro.get_buffer();
 790       } else
 791         act = remote_act;
 792
 793       char* p;
 794       if (act->src_actor_.get() == nullptr || act->dst_actor_.get() == nullptr) {
 795         type = "Test FALSE";
 796         p    = pointer_to_string(remote_act);
 797         args = bprintf("comm=%s", p);
 798       } else {
 799         type = "Test TRUE";
 800         p    = pointer_to_string(remote_act);
 801
 802         smx_actor_t src_proc =
 803             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 804         smx_actor_t dst_proc =
 805             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 806         args = bprintf("comm=%s [(%ld)%s (%s) -> (%ld)%s (%s)]", p, src_proc->get_pid(),
 807                        MC_smx_actor_get_name(src_proc), actor_get_host_name(src_proc), dst_proc->get_pid(),
 808                        MC_smx_actor_get_name(dst_proc), actor_get_host_name(dst_proc));
 809       }
 810       xbt_free(p);
 811       break;
 812     }
 813
 814     case Simcall::COMM_WAITANY: {
 815       type         = "WaitAny";
 816       size_t count = simcall_comm_waitany__get__count(req);
 817       if (count > 0) {
 818         simgrid::kernel::activity::CommImpl* remote_sync;
 819         remote_sync =
 820             mc_model_checker->get_remote_simulation().read(remote(simcall_comm_waitany__get__comms(req) + value));
 821         char* p = pointer_to_string(remote_sync);
 822         args    = bprintf("comm=%s (%d of %zu)", p, value + 1, count);
 823         xbt_free(p);
 824       } else
 825         args = bprintf("comm at idx %d", value);
 826       break;
 827     }
 828
 829     case Simcall::COMM_TESTANY:
 830       if (value == -1) {
 831         type = "TestAny FALSE";
 832         args = xbt_strdup("-");
 833       } else {
 834         type = "TestAny";
 835         args = bprintf("(%d of %zu)", value + 1, simcall_comm_testany__get__count(req));
 836       }
 837       break;
 838
 839     case Simcall::MUTEX_TRYLOCK:
 840     case Simcall::MUTEX_LOCK: {
 841       if (req->call_ == Simcall::MUTEX_LOCK)
 842         type = "Mutex LOCK";
 843       else
 844         type = "Mutex TRYLOCK";
 845
 846       simgrid::mc::Remote<simgrid::kernel::activity::MutexImpl> mutex;
 847       mc_model_checker->get_remote_simulation().read_bytes(mutex.get_buffer(), sizeof(mutex),
 848                                                            remote(req->call_ == Simcall::MUTEX_LOCK
 849                                                                       ? simcall_mutex_lock__get__mutex(req)
 850                                                                       : simcall_mutex_trylock__get__mutex(req)));
 851       args = bprintf("locked = %d, owner = %d, sleeping = n/a", mutex.get_buffer()->is_locked(),
 852                      mutex.get_buffer()->get_owner() != nullptr
 853                          ? (int)mc_model_checker->get_remote_simulation()
 854                                .resolve_actor(simgrid::mc::remote(mutex.get_buffer()->get_owner()))
 855                                ->get_pid()
 856                          : -1);
 857       break;
 858     }
 859
 860     case Simcall::MC_RANDOM:
 861       type = "MC_RANDOM";
 862       args = bprintf("%d", value);
 863       break;
 864
 865     default:
 866       type = SIMIX_simcall_name(req->call_);
 867       args = bprintf("??");
 868       break;
 869   }
 870
 871   std::string str;
 872   if (args != nullptr)
 873     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s(%s)", issuer->get_pid(), actor_get_host_name(issuer),
 874                                       MC_smx_actor_get_name(issuer), type, args);
 875   else
 876     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s ", issuer->get_pid(), actor_get_host_name(issuer),
 877                                       MC_smx_actor_get_name(issuer), type);
 878   xbt_free(args);
 879   return str;
 880 }
 881
 882 std::string Api::request_get_dot_output(smx_simcall_t req, int value) const
 883 {
 884   const smx_actor_t issuer = simcall_get_issuer(req);
 885   const char* color        = get_color(issuer->get_pid() - 1);
 886
 887   if (req->inspector_ != nullptr)
 888     return simgrid::xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s",
 889                                        req->inspector_->dot_label().c_str(), color, color);
 890
 891   std::string label;
 892
 893   switch (req->call_) {
 894     case Simcall::COMM_ISEND:
 895       if (issuer->get_host())
 896         label = xbt::string_printf("[(%ld)%s] iSend", issuer->get_pid(), actor_get_host_name(issuer));
 897       else
 898         label = bprintf("[(%ld)] iSend", issuer->get_pid());
 899       break;
 900
 901     case Simcall::COMM_IRECV:
 902       if (issuer->get_host())
 903         label = xbt::string_printf("[(%ld)%s] iRecv", issuer->get_pid(), actor_get_host_name(issuer));
 904       else
 905         label = xbt::string_printf("[(%ld)] iRecv", issuer->get_pid());
 906       break;
 907
 908     case Simcall::COMM_WAIT:
 909       if (value == -1) {
 910         if (issuer->get_host())
 911           label = xbt::string_printf("[(%ld)%s] WaitTimeout", issuer->get_pid(), actor_get_host_name(issuer));
 912         else
 913           label = xbt::string_printf("[(%ld)] WaitTimeout", issuer->get_pid());
 914       } else {
 915         kernel::activity::ActivityImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 916         Remote<kernel::activity::CommImpl> temp_comm;
 917         mc_model_checker->get_remote_simulation().read(temp_comm,
 918                                                        remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 919         const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 920
 921         const kernel::actor::ActorImpl* src_proc =
 922             mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->src_actor_.get()));
 923         const kernel::actor::ActorImpl* dst_proc =
 924             mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->dst_actor_.get()));
 925         if (issuer->get_host())
 926           label =
 927               xbt::string_printf("[(%ld)%s] Wait [(%ld)->(%ld)]", issuer->get_pid(), actor_get_host_name(issuer),
 928                                  src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 929         else
 930           label = xbt::string_printf("[(%ld)] Wait [(%ld)->(%ld)]", issuer->get_pid(),
 931                                      src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 932       }
 933       break;
 934
 935     case Simcall::COMM_TEST: {
 936       kernel::activity::ActivityImpl* remote_act = simcall_comm_test__getraw__comm(req);
 937       Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 938       mc_model_checker->get_remote_simulation().read(temp_comm,
 939                                                      remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 940       const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 941       if (comm->src_actor_.get() == nullptr || comm->dst_actor_.get() == nullptr) {
 942         if (issuer->get_host())
 943           label = xbt::string_printf("[(%ld)%s] Test FALSE", issuer->get_pid(), actor_get_host_name(issuer));
 944         else
 945           label = bprintf("[(%ld)] Test FALSE", issuer->get_pid());
 946       } else {
 947         if (issuer->get_host())
 948           label = xbt::string_printf("[(%ld)%s] Test TRUE", issuer->get_pid(), actor_get_host_name(issuer));
 949         else
 950           label = xbt::string_printf("[(%ld)] Test TRUE", issuer->get_pid());
 951       }
 952       break;
 953     }
 954
 955     case Simcall::COMM_WAITANY: {
 956       size_t comms_size = simcall_comm_waitany__get__count(req);
 957       if (issuer->get_host())
 958         label = xbt::string_printf("[(%ld)%s] WaitAny [%d of %zu]", issuer->get_pid(),
 959                                    actor_get_host_name(issuer), value + 1, comms_size);
 960       else
 961         label = xbt::string_printf("[(%ld)] WaitAny [%d of %zu]", issuer->get_pid(), value + 1, comms_size);
 962       break;
 963     }
 964
 965     case Simcall::COMM_TESTANY:
 966       if (value == -1) {
 967         if (issuer->get_host())
 968           label = xbt::string_printf("[(%ld)%s] TestAny FALSE", issuer->get_pid(), actor_get_host_name(issuer));
 969         else
 970           label = xbt::string_printf("[(%ld)] TestAny FALSE", issuer->get_pid());
 971       } else {
 972         if (issuer->get_host())
 973           label =
 974               xbt::string_printf("[(%ld)%s] TestAny TRUE [%d of %lu]", issuer->get_pid(),
 975                                  actor_get_host_name(issuer), value + 1, simcall_comm_testany__get__count(req));
 976         else
 977           label = xbt::string_printf("[(%ld)] TestAny TRUE [%d of %lu]", issuer->get_pid(), value + 1,
 978                                      simcall_comm_testany__get__count(req));
 979       }
 980       break;
 981
 982     case Simcall::MUTEX_TRYLOCK:
 983       label = xbt::string_printf("[(%ld)] Mutex TRYLOCK", issuer->get_pid());
 984       break;
 985
 986     case Simcall::MUTEX_LOCK:
 987       label = xbt::string_printf("[(%ld)] Mutex LOCK", issuer->get_pid());
 988       break;
 989
 990     case Simcall::MC_RANDOM:
 991       if (issuer->get_host())
 992         label = xbt::string_printf("[(%ld)%s] MC_RANDOM (%d)", issuer->get_pid(), actor_get_host_name(issuer),
 993                                    value);
 994       else
 995         label = xbt::string_printf("[(%ld)] MC_RANDOM (%d)", issuer->get_pid(), value);
 996       break;
 997
 998     default:
 999       THROW_UNIMPLEMENTED;
1000   }
1001
1002   return xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s", label.c_str(), color, color);
1003 }
1004
1005 const char* Api::simcall_get_name(simgrid::simix::Simcall kind) const
1006 {
1007   return simcall_names[static_cast<int>(kind)];
1008 }
1009
1010 #if HAVE_SMPI
1011 int Api::get_smpi_request_tag(smx_simcall_t const& simcall, simgrid::simix::Simcall type) const
1012 {
1013   simgrid::smpi::Request mpi_request;
1014   void* simcall_data = nullptr;
1015   if (type == Simcall::COMM_ISEND)
1016     simcall_data = simcall_comm_isend__get__data(simcall);
1017   else if (type == Simcall::COMM_IRECV)
1018     simcall_data = simcall_comm_irecv__get__data(simcall);
1019   mc_model_checker->get_remote_simulation().read(&mpi_request, remote(static_cast<smpi::Request*>(simcall_data)));
1020   return mpi_request.tag();
1021 }
1022 #endif
1023
1024 void Api::restore_state(std::shared_ptr<simgrid::mc::Snapshot> system_state) const
1025 {
1026   system_state->restore(&mc_model_checker->get_remote_simulation());
1027 }
1028
1029 void Api::log_state() const
1030 {
1031   session->log_state();
1032 }
1033
1034 bool Api::snapshot_equal(const Snapshot* s1, const Snapshot* s2) const
1035 {
1036   return simgrid::mc::snapshot_equal(s1, s2);
1037 }
1038
1039 simgrid::mc::Snapshot* Api::take_snapshot(int num_state) const
1040 {
1041   auto snapshot = new simgrid::mc::Snapshot(num_state);
1042   return snapshot;
1043 }
1044
1045 void Api::s_close() const
1046 {
1047   session->close();
1048 }
1049
1050 void Api::restore_initial_state() const
1051 {
1052   session->restore_initial_state();
1053 }
1054
1055 void Api::execute(Transition const& transition) const
1056 {
1057   session->execute(transition);
1058 }
1059
1060 #if SIMGRID_HAVE_MC
1061 void Api::automaton_load(const char* file) const
1062 {
1063   MC_automaton_load(file);
1064 }
1065 #endif
1066
1067 std::vector<int> Api::automaton_propositional_symbol_evaluate() const
1068 {
1069   unsigned int cursor = 0;
1070   std::vector<int> values;
1071   xbt_automaton_propositional_symbol_t ps = nullptr;
1072   xbt_dynar_foreach (mc::property_automaton->propositional_symbols, cursor, ps)
1073     values.push_back(xbt_automaton_propositional_symbol_evaluate(ps));
1074   return values;
1075 }
1076
1077 std::vector<xbt_automaton_state_t> Api::get_automaton_state() const
1078 {
1079   std::vector<xbt_automaton_state_t> automaton_stack;
1080   unsigned int cursor = 0;
1081   xbt_automaton_state_t automaton_state;
1082   xbt_dynar_foreach (mc::property_automaton->states, cursor, automaton_state)
1083     if (automaton_state->type == -1)
1084       automaton_stack.push_back(automaton_state);
1085   return automaton_stack;
1086 }
1087
1088 int Api::compare_automaton_exp_label(const xbt_automaton_exp_label* l) const
1089 {
1090   unsigned int cursor                    = 0;
1091   xbt_automaton_propositional_symbol_t p = nullptr;
1092   xbt_dynar_foreach (simgrid::mc::property_automaton->propositional_symbols, cursor, p) {
1093     if (std::strcmp(xbt_automaton_propositional_symbol_get_name(p), l->u.predicat) == 0)
1094       return cursor;
1095   }
1096   return -1;
1097 }
1098
1099 void Api::set_property_automaton(xbt_automaton_state_t const& automaton_state) const
1100 {
1101   mc::property_automaton->current_state = automaton_state;
1102 }
1103
1104 xbt_automaton_exp_label_t Api::get_automaton_transition_label(xbt_dynar_t const& dynar, int index) const
1105 {
1106   const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
1107   return transition->label;
1108 }
1109
1110 xbt_automaton_state_t Api::get_automaton_transition_dst(xbt_dynar_t const& dynar, int index) const
1111 {
1112   const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
1113   return transition->dst;
1114 }
1115
1116 } // namespace mc
1117 } // namespace simgrid