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 Facade 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_.times_considered_ = -1;
  70   state->transition_.textual[0]        = '\0';
  71   state->executed_req_.call_         = Simcall::NONE;
  72
  73   if (not simgrid::mc::actor_is_enabled(actor))
  74     return nullptr; // Not executable in the application
  75
  76   smx_simcall_t req = nullptr;
  77   if (actor->simcall_.inspector_ != nullptr) {
  78     bool pending = mc_model_checker->simcall_is_pending(actor->get_pid(), procstate->times_considered);
  79
  80     ++procstate->times_considered;
  81     state->transition_.times_considered_ = procstate->times_considered;
  82     if (not pending)
  83       procstate->set_done();
  84     req = &actor->simcall_;
  85   } else
  86     switch (actor->simcall_.call_) {
  87       case Simcall::COMM_WAITANY:
  88         state->transition_.times_considered_ = -1;
  89         while (procstate->times_considered < simcall_comm_waitany__get__count(&actor->simcall_)) {
  90           if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall_, procstate->times_considered)) {
  91             state->transition_.times_considered_ = procstate->times_considered;
  92             ++procstate->times_considered;
  93             break;
  94           }
  95           ++procstate->times_considered;
  96         }
  97
  98         if (procstate->times_considered >= simcall_comm_waitany__get__count(&actor->simcall_))
  99           procstate->set_done();
 100         if (state->transition_.times_considered_ != -1)
 101           req = &actor->simcall_;
 102         break;
 103
 104       case Simcall::COMM_TESTANY: {
 105         unsigned start_count                 = procstate->times_considered;
 106         state->transition_.times_considered_ = -1;
 107         while (procstate->times_considered < simcall_comm_testany__get__count(&actor->simcall_)) {
 108           if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall_, procstate->times_considered)) {
 109             state->transition_.times_considered_ = procstate->times_considered;
 110             ++procstate->times_considered;
 111             break;
 112           }
 113           ++procstate->times_considered;
 114         }
 115
 116         if (procstate->times_considered >= simcall_comm_testany__get__count(&actor->simcall_))
 117           procstate->set_done();
 118
 119         if (state->transition_.times_considered_ != -1 || start_count == 0)
 120           req = &actor->simcall_;
 121
 122         break;
 123       }
 124
 125       case Simcall::COMM_WAIT: {
 126         simgrid::mc::RemotePtr<simgrid::kernel::activity::CommImpl> remote_act =
 127             remote(simcall_comm_wait__getraw__comm(&actor->simcall_));
 128         simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_act;
 129         mc_model_checker->get_remote_simulation().read(temp_act, remote_act);
 130         const simgrid::kernel::activity::CommImpl* act = temp_act.get_buffer();
 131         if (act->src_actor_.get() && act->dst_actor_.get())
 132           state->transition_.times_considered_ = 0; // OK
 133         else if (act->src_actor_.get() == nullptr && act->state_ == simgrid::kernel::activity::State::READY &&
 134                  act->detached())
 135           state->transition_.times_considered_ = 0; // OK
 136         else
 137           state->transition_.times_considered_ = -1; // timeout
 138         procstate->set_done();
 139         req = &actor->simcall_;
 140         break;
 141       }
 142
 143       default:
 144         procstate->set_done();
 145         state->transition_.times_considered_ = 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_.times_considered_));
 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_.times_considered_ > 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_.times_considered_));
 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_.times_considered_);
 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 const char* Api::actor_get_name(smx_actor_t actor) const
 315 {
 316   if (mc_model_checker == nullptr)
 317     return actor->get_cname();
 318
 319   const simgrid::mc::RemoteSimulation* process = &mc_model_checker->get_remote_simulation();
 320
 321   simgrid::mc::ActorInformation* info = actor_info_cast(actor);
 322   if (info->name.empty()) {
 323     simgrid::xbt::string_data string_data = simgrid::xbt::string::to_string_data(actor->name_);
 324     info->name = process->read_string(remote(string_data.data), string_data.len);
 325   }
 326   return info->name.c_str();
 327 }
 328
 329 void Api::initialize(char** argv) const
 330 {
 331   simgrid::mc::session = new simgrid::mc::Session([argv] {
 332     int i = 1;
 333     while (argv[i] != nullptr && argv[i][0] == '-')
 334       i++;
 335     xbt_assert(argv[i] != nullptr,
 336                "Unable to find a binary to exec on the command line. Did you only pass config flags?");
 337     execvp(argv[i], argv + i);
 338     xbt_die("The model-checked process failed to exec(): %s", strerror(errno));
 339   });
 340 }
 341
 342 std::vector<simgrid::mc::ActorInformation>& Api::get_actors() const
 343 {
 344   return mc_model_checker->get_remote_simulation().actors();
 345 }
 346
 347 bool Api::actor_is_enabled(aid_t pid) const
 348 {
 349   return session->actor_is_enabled(pid);
 350 }
 351
 352 unsigned long Api::get_maxpid() const
 353 {
 354   return MC_smx_get_maxpid();
 355 }
 356
 357 int Api::get_actors_size() const
 358 {
 359   return mc_model_checker->get_remote_simulation().actors().size();
 360 }
 361
 362 RemotePtr<kernel::activity::CommImpl> Api::get_comm_isend_raw_addr(smx_simcall_t request) const
 363 {
 364   auto comm_addr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::ActivityImpl*>(request->result_);
 365   return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
 366 }
 367
 368 RemotePtr<kernel::activity::CommImpl> Api::get_comm_irecv_raw_addr(smx_simcall_t request) const
 369 {
 370   auto comm_addr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::ActivityImpl*>(request->result_);
 371   return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
 372 }
 373
 374 RemotePtr<kernel::activity::CommImpl> Api::get_comm_wait_raw_addr(smx_simcall_t request) const
 375 {
 376   auto comm_addr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::CommImpl*>(request->args_[0]);
 377   return RemotePtr<kernel::activity::CommImpl>(comm_addr);
 378 }
 379
 380 RemotePtr<kernel::activity::CommImpl> Api::get_comm_waitany_raw_addr(smx_simcall_t request, int value) const
 381 {
 382   auto addr      = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::CommImpl**>(request->args_[0]) + value;
 383   auto comm_addr = mc_model_checker->get_remote_simulation().read(remote(addr));
 384   return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
 385 }
 386
 387 std::string Api::get_pattern_comm_rdv(RemotePtr<kernel::activity::CommImpl> const& addr) const
 388 {
 389   Remote<kernel::activity::CommImpl> temp_synchro;
 390   mc_model_checker->get_remote_simulation().read(temp_synchro, addr);
 391   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 392
 393   char* remote_name = mc_model_checker->get_remote_simulation().read<char*>(RemotePtr<char*>(
 394       (uint64_t)(synchro->get_mailbox() ? &synchro->get_mailbox()->get_name() : &synchro->mbox_cpy->get_name())));
 395   auto rdv          = mc_model_checker->get_remote_simulation().read_string(RemotePtr<char>(remote_name));
 396   return rdv;
 397 }
 398
 399 unsigned long Api::get_pattern_comm_src_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
 400 {
 401   Remote<kernel::activity::CommImpl> temp_synchro;
 402   mc_model_checker->get_remote_simulation().read(temp_synchro, addr);
 403   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 404   auto src_proc =
 405       mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->src_actor_.get()))->get_pid();
 406   return src_proc;
 407 }
 408
 409 unsigned long Api::get_pattern_comm_dst_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
 410 {
 411   Remote<kernel::activity::CommImpl> temp_synchro;
 412   mc_model_checker->get_remote_simulation().read(temp_synchro, addr);
 413   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 414   auto src_proc =
 415       mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->dst_actor_.get()))->get_pid();
 416   return src_proc;
 417 }
 418
 419 std::vector<char> Api::get_pattern_comm_data(RemotePtr<kernel::activity::CommImpl> const& addr) const
 420 {
 421   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 422   mc_model_checker->get_remote_simulation().read(temp_comm, addr);
 423   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 424
 425   std::vector<char> buffer{};
 426   if (comm->src_buff_ != nullptr) {
 427     buffer.resize(comm->src_buff_size_);
 428     mc_model_checker->get_remote_simulation().read_bytes(buffer.data(), buffer.size(), remote(comm->src_buff_));
 429   }
 430   return buffer;
 431 }
 432
 433 const char* Api::get_actor_host_name(smx_actor_t actor) const
 434 {
 435   const char* host_name = actor_get_host_name(actor);
 436   return host_name;
 437 }
 438
 439 #if HAVE_SMPI
 440 bool Api::check_send_request_detached(smx_simcall_t const& simcall) const
 441 {
 442   simgrid::smpi::Request mpi_request;
 443   mc_model_checker->get_remote_simulation().read(
 444       &mpi_request, remote(static_cast<smpi::Request*>(simcall_comm_isend__get__data(simcall))));
 445   return mpi_request.detached();
 446 }
 447 #endif
 448
 449 smx_actor_t Api::get_src_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
 450 {
 451   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 452   mc_model_checker->get_remote_simulation().read(temp_comm, comm_addr);
 453   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 454
 455   auto src_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->src_actor_.get()));
 456   return src_proc;
 457 }
 458
 459 smx_actor_t Api::get_dst_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
 460 {
 461   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 462   mc_model_checker->get_remote_simulation().read(temp_comm, comm_addr);
 463   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 464
 465   auto dst_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->dst_actor_.get()));
 466   return dst_proc;
 467 }
 468
 469 std::size_t Api::get_remote_heap_bytes() const
 470 {
 471   RemoteSimulation& process = mc_model_checker->get_remote_simulation();
 472   auto heap_bytes_used      = mmalloc_get_bytes_used_remote(process.get_heap()->heaplimit, process.get_malloc_info());
 473   return heap_bytes_used;
 474 }
 475
 476 void Api::session_initialize() const
 477 {
 478   session->initialize();
 479 }
 480
 481 void Api::mc_inc_visited_states() const
 482 {
 483   mc_model_checker->visited_states++;
 484 }
 485
 486 void Api::mc_inc_executed_trans() const
 487 {
 488   mc_model_checker->executed_transitions++;
 489 }
 490
 491 unsigned long Api::mc_get_visited_states() const
 492 {
 493   return mc_model_checker->visited_states;
 494 }
 495
 496 unsigned long Api::mc_get_executed_trans() const
 497 {
 498   return mc_model_checker->executed_transitions;
 499 }
 500
 501 bool Api::mc_check_deadlock() const
 502 {
 503   return mc_model_checker->checkDeadlock();
 504 }
 505
 506 void Api::mc_show_deadlock() const
 507 {
 508   MC_show_deadlock();
 509 }
 510
 511 /** Get the issuer of a simcall (`req->issuer`)
 512  *
 513  *  In split-process mode, it does the black magic necessary to get an address
 514  *  of a (shallow) copy of the data structure the issuer SIMIX actor in the local
 515  *  address space.
 516  *
 517  *  @param process the MCed process
 518  *  @param req     the simcall (copied in the local process)
 519  */
 520 smx_actor_t Api::simcall_get_issuer(s_smx_simcall const* req) const
 521 {
 522   xbt_assert(mc_model_checker != nullptr);
 523
 524   // This is the address of the smx_actor in the MCed process:
 525   auto address = simgrid::mc::remote(req->issuer_);
 526
 527   // Lookup by address:
 528   for (auto& actor : mc_model_checker->get_remote_simulation().actors())
 529     if (actor.address == address)
 530       return actor.copy.get_buffer();
 531   for (auto& actor : mc_model_checker->get_remote_simulation().dead_actors())
 532     if (actor.address == address)
 533       return actor.copy.get_buffer();
 534
 535   xbt_die("Issuer not found");
 536 }
 537
 538 long Api::simcall_get_actor_id(s_smx_simcall const* req) const
 539 {
 540   return simcall_get_issuer(req)->get_pid();
 541 }
 542
 543 RemotePtr<kernel::activity::MailboxImpl> Api::get_mbox_remote_addr(smx_simcall_t const req) const
 544 {
 545   RemotePtr<kernel::activity::MailboxImpl> mbox_addr;
 546   switch (req->call_) {
 547     case Simcall::COMM_ISEND:
 548     case Simcall::COMM_IRECV: {
 549       auto mbox_addr_ptr = simix::unmarshal<smx_mailbox_t>(req->args_[1]);
 550       mbox_addr          = remote(mbox_addr_ptr);
 551       break;
 552     }
 553     default:
 554       mbox_addr = RemotePtr<kernel::activity::MailboxImpl>();
 555       break;
 556   }
 557   return mbox_addr;
 558 }
 559
 560 RemotePtr<kernel::activity::ActivityImpl> Api::get_comm_remote_addr(smx_simcall_t const req) const
 561 {
 562   RemotePtr<kernel::activity::ActivityImpl> comm_addr;
 563   switch (req->call_) {
 564     case Simcall::COMM_ISEND:
 565     case Simcall::COMM_IRECV: {
 566       auto comm_addr_ptr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::ActivityImpl*>(req->result_);
 567       comm_addr          = remote(comm_addr_ptr);
 568       break;
 569     }
 570     default:
 571       comm_addr = RemotePtr<kernel::activity::ActivityImpl>();
 572       break;
 573   }
 574   return comm_addr;
 575 }
 576
 577 bool Api::mc_is_null() const
 578 {
 579   auto is_null = (mc_model_checker == nullptr) ? true : false;
 580   return is_null;
 581 }
 582
 583 Checker* Api::mc_get_checker() const
 584 {
 585   return mc_model_checker->getChecker();
 586 }
 587
 588 void Api::set_checker(Checker* const checker) const
 589 {
 590   xbt_assert(mc_model_checker);
 591   xbt_assert(mc_model_checker->getChecker() == nullptr);
 592   mc_model_checker->setChecker(checker);
 593 }
 594
 595 void Api::handle_simcall(Transition const& transition) const
 596 {
 597   mc_model_checker->handle_simcall(transition);
 598 }
 599
 600 void Api::mc_wait_for_requests() const
 601 {
 602   mc_model_checker->wait_for_requests();
 603 }
 604
 605 void Api::mc_exit(int status) const
 606 {
 607   mc_model_checker->exit(status);
 608 }
 609
 610 std::string const& Api::mc_get_host_name(std::string const& hostname) const
 611 {
 612   return mc_model_checker->get_host_name(hostname);
 613 }
 614
 615 void Api::dump_record_path() const
 616 {
 617   simgrid::mc::dumpRecordPath();
 618 }
 619
 620 smx_simcall_t Api::mc_state_choose_request(simgrid::mc::State* state) const
 621 {
 622   for (auto& actor : mc_model_checker->get_remote_simulation().actors()) {
 623     /* Only consider the actors that were marked as interleaving by the checker algorithm */
 624     if (not state->actor_states_[actor.copy.get_buffer()->get_pid()].is_todo())
 625       continue;
 626
 627     smx_simcall_t res = MC_state_choose_request_for_process(state, actor.copy.get_buffer());
 628     if (res)
 629       return res;
 630   }
 631   return nullptr;
 632 }
 633
 634 std::list<transition_detail_t> Api::get_enabled_transitions(simgrid::mc::State* state)
 635 {
 636   std::list<transition_detail_t> tr_list{};
 637
 638   for (auto& actor : mc_model_checker->get_remote_simulation().actors()) {
 639     auto actor_pid  = actor.copy.get_buffer()->get_pid();
 640     auto actor_impl = actor.copy.get_buffer();
 641
 642     // Only consider the actors that were marked as interleaving by the checker algorithm
 643     if (not state->actor_states_[actor_pid].is_todo())
 644       continue;
 645     // Not executable in the application
 646     if (not simgrid::mc::actor_is_enabled(actor_impl))
 647       continue;
 648
 649     transition_detail_t transition = std::unique_ptr<s_transition_detail>(new s_transition_detail());
 650     Simcall simcall_call                = actor_impl->simcall_.call_;
 651     smx_simcall_t simcall               = &actor_impl->simcall_;
 652     transition->call_             = simcall_call;
 653     switch (simcall_call) {
 654       case Simcall::COMM_ISEND:
 655       case Simcall::COMM_IRECV: {
 656         transition->mbox_remote_addr = get_mbox_remote_addr(simcall);
 657         transition->comm_remote_addr = get_comm_remote_addr(simcall);
 658         break;
 659       }
 660
 661       default:
 662         break;
 663     }
 664     tr_list.emplace_back(std::move(transition));
 665   }
 666
 667   return tr_list;
 668 }
 669
 670 bool Api::simcall_check_dependency(smx_simcall_t const req1, smx_simcall_t const req2) const
 671 {
 672   if (req1->issuer_ == req2->issuer_)
 673     return false;
 674
 675   /* Wait with timeout transitions are not considered by the independence theorem, thus we consider them as dependent
 676    * with all other transitions */
 677   if ((req1->call_ == Simcall::COMM_WAIT && simcall_comm_wait__get__timeout(req1) > 0) ||
 678       (req2->call_ == Simcall::COMM_WAIT && simcall_comm_wait__get__timeout(req2) > 0))
 679     return true;
 680
 681   if (req1->call_ != req2->call_)
 682     return request_depend_asymmetric(req1, req2) && request_depend_asymmetric(req2, req1);
 683
 684   // Those are internal requests, we do not need indirection because those objects are copies:
 685   const kernel::activity::CommImpl* synchro1 = get_comm(req1);
 686   const kernel::activity::CommImpl* synchro2 = get_comm(req2);
 687
 688   switch (req1->call_) {
 689     case Simcall::COMM_ISEND:
 690       return simcall_comm_isend__get__mbox(req1) == simcall_comm_isend__get__mbox(req2);
 691     case Simcall::COMM_IRECV:
 692       return simcall_comm_irecv__get__mbox(req1) == simcall_comm_irecv__get__mbox(req2);
 693     case Simcall::COMM_WAIT:
 694       if (synchro1->src_buff_ == synchro2->src_buff_ && synchro1->dst_buff_ == synchro2->dst_buff_)
 695         return false;
 696       if (synchro1->src_buff_ != nullptr && synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr &&
 697           synchro2->dst_buff_ != nullptr && synchro1->dst_buff_ != synchro2->src_buff_ &&
 698           synchro1->dst_buff_ != synchro2->dst_buff_ && synchro2->dst_buff_ != synchro1->src_buff_)
 699         return false;
 700       return true;
 701     default:
 702       return true;
 703   }
 704 }
 705
 706 std::string Api::request_to_string(smx_simcall_t req, int value, RequestType request_type) const
 707 {
 708   xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
 709
 710   bool use_remote_comm = true;
 711   switch (request_type) {
 712     case simgrid::mc::RequestType::simix:
 713       use_remote_comm = true;
 714       break;
 715     case simgrid::mc::RequestType::executed:
 716     case simgrid::mc::RequestType::internal:
 717       use_remote_comm = false;
 718       break;
 719     default:
 720       THROW_IMPOSSIBLE;
 721   }
 722
 723   const char* type = nullptr;
 724   char* args       = nullptr;
 725
 726   smx_actor_t issuer = simcall_get_issuer(req);
 727
 728   if (issuer->simcall_.inspector_ != nullptr) {
 729     return mc_model_checker->simcall_to_string(issuer->get_pid(), value);
 730
 731   } else
 732     switch (req->call_) {
 733       case Simcall::COMM_ISEND: {
 734         type     = "iSend";
 735         char* p  = pointer_to_string(simcall_comm_isend__get__src_buff(req));
 736         char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
 737         if (issuer->get_host())
 738           args = bprintf("src=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), actor_get_host_name(issuer),
 739                          actor_get_name(issuer), p, bs);
 740         else
 741           args = bprintf("src=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), actor_get_name(issuer), p, bs);
 742         xbt_free(bs);
 743         xbt_free(p);
 744         break;
 745       }
 746
 747       case Simcall::COMM_IRECV: {
 748         size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
 749         size_t size         = 0;
 750         if (remote_size)
 751           mc_model_checker->get_remote_simulation().read_bytes(&size, sizeof(size), remote(remote_size));
 752
 753         type     = "iRecv";
 754         char* p  = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
 755         char* bs = buff_size_to_string(size);
 756         if (issuer->get_host())
 757           args = bprintf("dst=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), actor_get_host_name(issuer),
 758                          actor_get_name(issuer), p, bs);
 759         else
 760           args = bprintf("dst=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), actor_get_name(issuer), p, bs);
 761         xbt_free(bs);
 762         xbt_free(p);
 763         break;
 764       }
 765
 766       case Simcall::COMM_WAIT: {
 767         simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 768         char* p;
 769         if (value == -1) {
 770           type = "WaitTimeout";
 771           p    = pointer_to_string(remote_act);
 772           args = bprintf("comm=%s", p);
 773         } else {
 774           type = "Wait";
 775           p    = pointer_to_string(remote_act);
 776
 777           simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 778           const simgrid::kernel::activity::CommImpl* act;
 779           if (use_remote_comm) {
 780             mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 781             act = temp_synchro.get_buffer();
 782           } else
 783             act = remote_act;
 784
 785           smx_actor_t src_proc =
 786               mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 787           smx_actor_t dst_proc =
 788               mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 789           args = bprintf("comm=%s [(%ld)%s (%s)-> (%ld)%s (%s)]", p, src_proc ? src_proc->get_pid() : 0,
 790                          src_proc ? actor_get_host_name(src_proc) : "", src_proc ? actor_get_name(src_proc) : "",
 791                          dst_proc ? dst_proc->get_pid() : 0, dst_proc ? actor_get_host_name(dst_proc) : "",
 792                          dst_proc ? actor_get_name(dst_proc) : "");
 793         }
 794         xbt_free(p);
 795         break;
 796       }
 797
 798       case Simcall::COMM_TEST: {
 799         simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_test__getraw__comm(req);
 800         simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 801         const simgrid::kernel::activity::CommImpl* act;
 802         if (use_remote_comm) {
 803           mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 804           act = temp_synchro.get_buffer();
 805         } else
 806           act = remote_act;
 807
 808         char* p;
 809         if (act->src_actor_.get() == nullptr || act->dst_actor_.get() == nullptr) {
 810           type = "Test FALSE";
 811           p    = pointer_to_string(remote_act);
 812           args = bprintf("comm=%s", p);
 813         } else {
 814           type = "Test TRUE";
 815           p    = pointer_to_string(remote_act);
 816
 817           smx_actor_t src_proc =
 818               mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 819           smx_actor_t dst_proc =
 820               mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 821           args = bprintf("comm=%s [(%ld)%s (%s) -> (%ld)%s (%s)]", p, src_proc->get_pid(), actor_get_name(src_proc),
 822                          actor_get_host_name(src_proc), dst_proc->get_pid(), actor_get_name(dst_proc),
 823                          actor_get_host_name(dst_proc));
 824         }
 825         xbt_free(p);
 826         break;
 827       }
 828
 829       case Simcall::COMM_WAITANY: {
 830         type         = "WaitAny";
 831         size_t count = simcall_comm_waitany__get__count(req);
 832         if (count > 0) {
 833           simgrid::kernel::activity::CommImpl* remote_sync;
 834           remote_sync =
 835               mc_model_checker->get_remote_simulation().read(remote(simcall_comm_waitany__get__comms(req) + value));
 836           char* p = pointer_to_string(remote_sync);
 837           args    = bprintf("comm=%s (%d of %zu)", p, value + 1, count);
 838           xbt_free(p);
 839         } else
 840           args = bprintf("comm at idx %d", value);
 841         break;
 842       }
 843
 844       case Simcall::COMM_TESTANY:
 845         if (value == -1) {
 846           type = "TestAny FALSE";
 847           args = xbt_strdup("-");
 848         } else {
 849           type = "TestAny";
 850           args = bprintf("(%d of %zu)", value + 1, simcall_comm_testany__get__count(req));
 851         }
 852         break;
 853
 854       case Simcall::MUTEX_TRYLOCK:
 855       case Simcall::MUTEX_LOCK: {
 856         if (req->call_ == Simcall::MUTEX_LOCK)
 857           type = "Mutex LOCK";
 858         else
 859           type = "Mutex TRYLOCK";
 860
 861         simgrid::mc::Remote<simgrid::kernel::activity::MutexImpl> mutex;
 862         mc_model_checker->get_remote_simulation().read_bytes(mutex.get_buffer(), sizeof(mutex),
 863                                                              remote(req->call_ == Simcall::MUTEX_LOCK
 864                                                                         ? simcall_mutex_lock__get__mutex(req)
 865                                                                         : simcall_mutex_trylock__get__mutex(req)));
 866         args = bprintf("locked = %d, owner = %d, sleeping = n/a", mutex.get_buffer()->is_locked(),
 867                        mutex.get_buffer()->get_owner() != nullptr
 868                            ? (int)mc_model_checker->get_remote_simulation()
 869                                  .resolve_actor(simgrid::mc::remote(mutex.get_buffer()->get_owner()))
 870                                  ->get_pid()
 871                            : -1);
 872         break;
 873       }
 874
 875       default:
 876         type = SIMIX_simcall_name(req->call_);
 877         args = bprintf("??");
 878         break;
 879     }
 880
 881   std::string str;
 882   if (args != nullptr)
 883     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s(%s)", issuer->get_pid(), actor_get_host_name(issuer),
 884                                       actor_get_name(issuer), type, args);
 885   else
 886     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s ", issuer->get_pid(), actor_get_host_name(issuer),
 887                                       actor_get_name(issuer), type);
 888   xbt_free(args);
 889   return str;
 890 }
 891
 892 std::string Api::request_get_dot_output(smx_simcall_t req, int value) const
 893 {
 894   const smx_actor_t issuer = simcall_get_issuer(req);
 895   const char* color        = get_color(issuer->get_pid() - 1);
 896
 897   std::string label;
 898
 899   if (req->inspector_ != nullptr) {
 900     label = mc_model_checker->simcall_dot_label(issuer->get_pid(), value);
 901   } else
 902     switch (req->call_) {
 903       case Simcall::COMM_ISEND:
 904         if (issuer->get_host())
 905           label = xbt::string_printf("[(%ld)%s] iSend", issuer->get_pid(), actor_get_host_name(issuer));
 906         else
 907           label = bprintf("[(%ld)] iSend", issuer->get_pid());
 908         break;
 909
 910       case Simcall::COMM_IRECV:
 911         if (issuer->get_host())
 912           label = xbt::string_printf("[(%ld)%s] iRecv", issuer->get_pid(), actor_get_host_name(issuer));
 913         else
 914           label = xbt::string_printf("[(%ld)] iRecv", issuer->get_pid());
 915         break;
 916
 917       case Simcall::COMM_WAIT:
 918         if (value == -1) {
 919           if (issuer->get_host())
 920             label = xbt::string_printf("[(%ld)%s] WaitTimeout", issuer->get_pid(), actor_get_host_name(issuer));
 921           else
 922             label = xbt::string_printf("[(%ld)] WaitTimeout", issuer->get_pid());
 923         } else {
 924           kernel::activity::ActivityImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 925           Remote<kernel::activity::CommImpl> temp_comm;
 926           mc_model_checker->get_remote_simulation().read(temp_comm,
 927                                                          remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 928           const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 929
 930           const kernel::actor::ActorImpl* src_proc =
 931               mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->src_actor_.get()));
 932           const kernel::actor::ActorImpl* dst_proc =
 933               mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->dst_actor_.get()));
 934           if (issuer->get_host())
 935             label = xbt::string_printf("[(%ld)%s] Wait [(%ld)->(%ld)]", issuer->get_pid(), actor_get_host_name(issuer),
 936                                        src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 937           else
 938             label = xbt::string_printf("[(%ld)] Wait [(%ld)->(%ld)]", issuer->get_pid(),
 939                                        src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 940         }
 941         break;
 942
 943       case Simcall::COMM_TEST: {
 944         kernel::activity::ActivityImpl* remote_act = simcall_comm_test__getraw__comm(req);
 945         Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 946         mc_model_checker->get_remote_simulation().read(temp_comm,
 947                                                        remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 948         const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 949         if (comm->src_actor_.get() == nullptr || comm->dst_actor_.get() == nullptr) {
 950           if (issuer->get_host())
 951             label = xbt::string_printf("[(%ld)%s] Test FALSE", issuer->get_pid(), actor_get_host_name(issuer));
 952           else
 953             label = bprintf("[(%ld)] Test FALSE", issuer->get_pid());
 954         } else {
 955           if (issuer->get_host())
 956             label = xbt::string_printf("[(%ld)%s] Test TRUE", issuer->get_pid(), actor_get_host_name(issuer));
 957           else
 958             label = xbt::string_printf("[(%ld)] Test TRUE", issuer->get_pid());
 959         }
 960         break;
 961       }
 962
 963       case Simcall::COMM_WAITANY: {
 964         size_t comms_size = simcall_comm_waitany__get__count(req);
 965         if (issuer->get_host())
 966           label = xbt::string_printf("[(%ld)%s] WaitAny [%d of %zu]", issuer->get_pid(), actor_get_host_name(issuer),
 967                                      value + 1, comms_size);
 968         else
 969           label = xbt::string_printf("[(%ld)] WaitAny [%d of %zu]", issuer->get_pid(), value + 1, comms_size);
 970         break;
 971       }
 972
 973       case Simcall::COMM_TESTANY:
 974         if (value == -1) {
 975           if (issuer->get_host())
 976             label = xbt::string_printf("[(%ld)%s] TestAny FALSE", issuer->get_pid(), actor_get_host_name(issuer));
 977           else
 978             label = xbt::string_printf("[(%ld)] TestAny FALSE", issuer->get_pid());
 979         } else {
 980           if (issuer->get_host())
 981             label = xbt::string_printf("[(%ld)%s] TestAny TRUE [%d of %lu]", issuer->get_pid(),
 982                                        actor_get_host_name(issuer), value + 1, simcall_comm_testany__get__count(req));
 983           else
 984             label = xbt::string_printf("[(%ld)] TestAny TRUE [%d of %lu]", issuer->get_pid(), value + 1,
 985                                        simcall_comm_testany__get__count(req));
 986         }
 987         break;
 988
 989       case Simcall::MUTEX_TRYLOCK:
 990         label = xbt::string_printf("[(%ld)] Mutex TRYLOCK", issuer->get_pid());
 991         break;
 992
 993       case Simcall::MUTEX_LOCK:
 994         label = xbt::string_printf("[(%ld)] Mutex LOCK", issuer->get_pid());
 995         break;
 996
 997       default:
 998         THROW_UNIMPLEMENTED;
 999     }
1000
1001   return xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s", label.c_str(), color, color);
1002 }
1003
1004 const char* Api::simcall_get_name(simgrid::simix::Simcall kind) const
1005 {
1006   return simcall_names[static_cast<int>(kind)];
1007 }
1008
1009 #if HAVE_SMPI
1010 int Api::get_smpi_request_tag(smx_simcall_t const& simcall, simgrid::simix::Simcall type) const
1011 {
1012   simgrid::smpi::Request mpi_request;
1013   void* simcall_data = nullptr;
1014   if (type == Simcall::COMM_ISEND)
1015     simcall_data = simcall_comm_isend__get__data(simcall);
1016   else if (type == Simcall::COMM_IRECV)
1017     simcall_data = simcall_comm_irecv__get__data(simcall);
1018   mc_model_checker->get_remote_simulation().read(&mpi_request, remote(static_cast<smpi::Request*>(simcall_data)));
1019   return mpi_request.tag();
1020 }
1021 #endif
1022
1023 void Api::restore_state(std::shared_ptr<simgrid::mc::Snapshot> system_state) const
1024 {
1025   system_state->restore(&mc_model_checker->get_remote_simulation());
1026 }
1027
1028 void Api::log_state() const
1029 {
1030   session->log_state();
1031 }
1032
1033 bool Api::snapshot_equal(const Snapshot* s1, const Snapshot* s2) const
1034 {
1035   return simgrid::mc::snapshot_equal(s1, s2);
1036 }
1037
1038 simgrid::mc::Snapshot* Api::take_snapshot(int num_state) const
1039 {
1040   auto snapshot = new simgrid::mc::Snapshot(num_state);
1041   return snapshot;
1042 }
1043
1044 void Api::s_close() const
1045 {
1046   session->close();
1047 }
1048
1049 void Api::restore_initial_state() const
1050 {
1051   session->restore_initial_state();
1052 }
1053
1054 void Api::execute(Transition const& transition) const
1055 {
1056   session->execute(transition);
1057   auto textual = mc_model_checker->simcall_to_string(transition.pid_, transition.times_considered_);
1058   strcpy((char*)transition.textual, textual.c_str());
1059 }
1060
1061 #if SIMGRID_HAVE_MC
1062 void Api::automaton_load(const char* file) const
1063 {
1064   MC_automaton_load(file);
1065 }
1066 #endif
1067
1068 std::vector<int> Api::automaton_propositional_symbol_evaluate() const
1069 {
1070   unsigned int cursor = 0;
1071   std::vector<int> values;
1072   xbt_automaton_propositional_symbol_t ps = nullptr;
1073   xbt_dynar_foreach (mc::property_automaton->propositional_symbols, cursor, ps)
1074     values.push_back(xbt_automaton_propositional_symbol_evaluate(ps));
1075   return values;
1076 }
1077
1078 std::vector<xbt_automaton_state_t> Api::get_automaton_state() const
1079 {
1080   std::vector<xbt_automaton_state_t> automaton_stack;
1081   unsigned int cursor = 0;
1082   xbt_automaton_state_t automaton_state;
1083   xbt_dynar_foreach (mc::property_automaton->states, cursor, automaton_state)
1084     if (automaton_state->type == -1)
1085       automaton_stack.push_back(automaton_state);
1086   return automaton_stack;
1087 }
1088
1089 int Api::compare_automaton_exp_label(const xbt_automaton_exp_label* l) const
1090 {
1091   unsigned int cursor                    = 0;
1092   xbt_automaton_propositional_symbol_t p = nullptr;
1093   xbt_dynar_foreach (simgrid::mc::property_automaton->propositional_symbols, cursor, p) {
1094     if (std::strcmp(xbt_automaton_propositional_symbol_get_name(p), l->u.predicat) == 0)
1095       return cursor;
1096   }
1097   return -1;
1098 }
1099
1100 void Api::set_property_automaton(xbt_automaton_state_t const& automaton_state) const
1101 {
1102   mc::property_automaton->current_state = automaton_state;
1103 }
1104
1105 xbt_automaton_exp_label_t Api::get_automaton_transition_label(xbt_dynar_t const& dynar, int index) const
1106 {
1107   const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
1108   return transition->label;
1109 }
1110
1111 xbt_automaton_state_t Api::get_automaton_transition_dst(xbt_dynar_t const& dynar, int index) const
1112 {
1113   const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
1114   return transition->dst;
1115 }
1116
1117 } // namespace mc
1118 } // namespace simgrid