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     state->transition_.times_considered_ = procstate->times_considered;
  79     procstate->times_considered++;
  80     if (actor->simcall_.mc_max_consider_ <= procstate->times_considered)
  81       procstate->set_done();
  82     req = &actor->simcall_;
  83   } else
  84     switch (actor->simcall_.call_) {
  85       case Simcall::COMM_WAITANY:
  86         state->transition_.times_considered_ = -1;
  87         while (procstate->times_considered < simcall_comm_waitany__get__count(&actor->simcall_)) {
  88           if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall_, procstate->times_considered)) {
  89             state->transition_.times_considered_ = procstate->times_considered;
  90             ++procstate->times_considered;
  91             break;
  92           }
  93           ++procstate->times_considered;
  94         }
  95
  96         if (procstate->times_considered >= simcall_comm_waitany__get__count(&actor->simcall_))
  97           procstate->set_done();
  98         if (state->transition_.times_considered_ != -1)
  99           req = &actor->simcall_;
 100         break;
 101
 102       case Simcall::COMM_TESTANY: {
 103         unsigned start_count                 = procstate->times_considered;
 104         state->transition_.times_considered_ = -1;
 105         while (procstate->times_considered < simcall_comm_testany__get__count(&actor->simcall_)) {
 106           if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall_, procstate->times_considered)) {
 107             state->transition_.times_considered_ = procstate->times_considered;
 108             ++procstate->times_considered;
 109             break;
 110           }
 111           ++procstate->times_considered;
 112         }
 113
 114         if (procstate->times_considered >= simcall_comm_testany__get__count(&actor->simcall_))
 115           procstate->set_done();
 116
 117         if (state->transition_.times_considered_ != -1 || start_count == 0)
 118           req = &actor->simcall_;
 119
 120         break;
 121       }
 122
 123       case Simcall::COMM_WAIT: {
 124         simgrid::mc::RemotePtr<simgrid::kernel::activity::CommImpl> remote_act =
 125             remote(simcall_comm_wait__getraw__comm(&actor->simcall_));
 126         simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_act;
 127         mc_model_checker->get_remote_simulation().read(temp_act, remote_act);
 128         const simgrid::kernel::activity::CommImpl* act = temp_act.get_buffer();
 129         if (act->src_actor_.get() && act->dst_actor_.get())
 130           state->transition_.times_considered_ = 0; // OK
 131         else if (act->src_actor_.get() == nullptr && act->state_ == simgrid::kernel::activity::State::READY &&
 132                  act->detached())
 133           state->transition_.times_considered_ = 0; // OK
 134         else
 135           state->transition_.times_considered_ = -1; // timeout
 136         procstate->set_done();
 137         req = &actor->simcall_;
 138         break;
 139       }
 140
 141       default:
 142         procstate->set_done();
 143         state->transition_.times_considered_ = 0;
 144         req                                  = &actor->simcall_;
 145         break;
 146     }
 147   if (not req)
 148     return nullptr;
 149
 150   state->transition_.pid_ = actor->get_pid();
 151   state->executed_req_    = *req;
 152   // Fetch the data of the request and translate it:
 153   state->internal_req_ = *req;
 154
 155   /* The waitany and testany request are transformed into a wait or test request over the corresponding communication
 156    * action so it can be treated later by the dependence function. */
 157   switch (req->call_) {
 158     case Simcall::COMM_WAITANY: {
 159       state->internal_req_.call_ = Simcall::COMM_WAIT;
 160       simgrid::kernel::activity::CommImpl* remote_comm;
 161       remote_comm = mc_model_checker->get_remote_simulation().read(
 162           remote(simcall_comm_waitany__get__comms(req) + state->transition_.times_considered_));
 163       mc_model_checker->get_remote_simulation().read(state->internal_comm_, remote(remote_comm));
 164       simcall_comm_wait__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 165       simcall_comm_wait__set__timeout(&state->internal_req_, 0);
 166       break;
 167     }
 168
 169     case Simcall::COMM_TESTANY:
 170       state->internal_req_.call_ = Simcall::COMM_TEST;
 171
 172       if (state->transition_.times_considered_ > 0) {
 173         simgrid::kernel::activity::CommImpl* remote_comm = mc_model_checker->get_remote_simulation().read(
 174             remote(simcall_comm_testany__get__comms(req) + state->transition_.times_considered_));
 175         mc_model_checker->get_remote_simulation().read(state->internal_comm_, remote(remote_comm));
 176       }
 177
 178       simcall_comm_test__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 179       simcall_comm_test__set__result(&state->internal_req_, state->transition_.times_considered_);
 180       break;
 181
 182     case Simcall::COMM_WAIT:
 183       mc_model_checker->get_remote_simulation().read_bytes(&state->internal_comm_, sizeof(state->internal_comm_),
 184                                                            remote(simcall_comm_wait__getraw__comm(req)));
 185       simcall_comm_wait__set__comm(&state->executed_req_, state->internal_comm_.get_buffer());
 186       simcall_comm_wait__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 187       break;
 188
 189     case Simcall::COMM_TEST:
 190       mc_model_checker->get_remote_simulation().read_bytes(&state->internal_comm_, sizeof(state->internal_comm_),
 191                                                            remote(simcall_comm_test__getraw__comm(req)));
 192       simcall_comm_test__set__comm(&state->executed_req_, state->internal_comm_.get_buffer());
 193       simcall_comm_test__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 194       break;
 195
 196     default:
 197       /* No translation needed */
 198       break;
 199   }
 200
 201   return req;
 202 }
 203
 204 simgrid::kernel::activity::CommImpl* Api::get_comm(smx_simcall_t const r) const
 205 {
 206   switch (r->call_) {
 207     case Simcall::COMM_WAIT:
 208       return simcall_comm_wait__getraw__comm(r);
 209     case Simcall::COMM_TEST:
 210       return simcall_comm_test__getraw__comm(r);
 211     default:
 212       return nullptr;
 213   }
 214 }
 215
 216 /** Statically "upcast" a s_smx_actor_t into an ActorInformation
 217  *
 218  *  This gets 'actorInfo' from '&actorInfo->copy'. It upcasts in the
 219  *  sense that we could achieve the same thing by having ActorInformation
 220  *  inherit from s_smx_actor_t but we don't really want to do that.
 221  */
 222 simgrid::mc::ActorInformation* Api::actor_info_cast(smx_actor_t actor) const
 223 {
 224   simgrid::mc::ActorInformation temp;
 225   std::size_t offset = (char*)temp.copy.get_buffer() - (char*)&temp;
 226
 227   auto* process_info = reinterpret_cast<simgrid::mc::ActorInformation*>((char*)actor - offset);
 228   return process_info;
 229 }
 230
 231 // Does half the job
 232 bool Api::request_depend_asymmetric(smx_simcall_t r1, smx_simcall_t r2) const
 233 {
 234   if (r1->call_ == Simcall::COMM_ISEND && r2->call_ == Simcall::COMM_IRECV)
 235     return false;
 236
 237   if (r1->call_ == Simcall::COMM_IRECV && r2->call_ == Simcall::COMM_ISEND)
 238     return false;
 239
 240   // Those are internal requests, we do not need indirection because those objects are copies:
 241   const kernel::activity::CommImpl* synchro1 = get_comm(r1);
 242   const kernel::activity::CommImpl* synchro2 = get_comm(r2);
 243
 244   if ((r1->call_ == Simcall::COMM_ISEND || r1->call_ == Simcall::COMM_IRECV) && r2->call_ == Simcall::COMM_WAIT) {
 245     auto mbox                                                  = get_mbox_remote_addr(r1);
 246     RemotePtr<kernel::activity::MailboxImpl> synchro2_mbox_cpy = remote(synchro2->mbox_cpy);
 247
 248     if (mbox != synchro2_mbox_cpy && simcall_comm_wait__get__timeout(r2) <= 0)
 249       return false;
 250
 251     if ((r1->issuer_ != synchro2->src_actor_.get()) && (r1->issuer_ != synchro2->dst_actor_.get()) &&
 252         simcall_comm_wait__get__timeout(r2) <= 0)
 253       return false;
 254
 255     if ((r1->call_ == Simcall::COMM_ISEND) && (synchro2->type_ == kernel::activity::CommImpl::Type::SEND) &&
 256         (synchro2->src_buff_ != simcall_comm_isend__get__src_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
 257       return false;
 258
 259     if ((r1->call_ == Simcall::COMM_IRECV) && (synchro2->type_ == kernel::activity::CommImpl::Type::RECEIVE) &&
 260         (synchro2->dst_buff_ != simcall_comm_irecv__get__dst_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
 261       return false;
 262   }
 263
 264   /* FIXME: the following rule assumes that the result of the isend/irecv call is not stored in a buffer used in the
 265    * test call. */
 266 #if 0
 267   if((r1->call == Simcall::COMM_ISEND || r1->call == Simcall::COMM_IRECV)
 268       &&  r2->call == Simcall::COMM_TEST)
 269     return false;
 270 #endif
 271
 272   if (r1->call_ == Simcall::COMM_WAIT && (r2->call_ == Simcall::COMM_WAIT || r2->call_ == Simcall::COMM_TEST) &&
 273       (synchro1->src_actor_.get() == nullptr || synchro1->dst_actor_.get() == nullptr))
 274     return false;
 275
 276   if (r1->call_ == Simcall::COMM_TEST &&
 277       (simcall_comm_test__get__comm(r1) == nullptr || synchro1->src_buff_ == nullptr || synchro1->dst_buff_ == nullptr))
 278     return false;
 279
 280   if (r1->call_ == Simcall::COMM_TEST && r2->call_ == Simcall::COMM_WAIT &&
 281       synchro1->src_buff_ == synchro2->src_buff_ && synchro1->dst_buff_ == synchro2->dst_buff_)
 282     return false;
 283
 284   if (r1->call_ == Simcall::COMM_WAIT && r2->call_ == Simcall::COMM_TEST && synchro1->src_buff_ != nullptr &&
 285       synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr && synchro2->dst_buff_ != nullptr &&
 286       synchro1->dst_buff_ != synchro2->src_buff_ && synchro1->dst_buff_ != synchro2->dst_buff_ &&
 287       synchro2->dst_buff_ != synchro1->src_buff_)
 288     return false;
 289
 290   return true;
 291 }
 292
 293 const char* Api::actor_get_host_name(smx_actor_t actor) const
 294 {
 295   if (mc_model_checker == nullptr)
 296     return actor->get_host()->get_cname();
 297
 298   const simgrid::mc::RemoteSimulation* process = &mc_model_checker->get_remote_simulation();
 299
 300   // Read the simgrid::xbt::string in the MCed process:
 301   simgrid::mc::ActorInformation* info = actor_info_cast(actor);
 302   auto remote_string_address =
 303       remote(reinterpret_cast<const simgrid::xbt::string_data*>(&actor->get_host()->get_name()));
 304   simgrid::xbt::string_data remote_string = process->read(remote_string_address);
 305   std::vector<char> hostname(remote_string.len + 1);
 306   // no need to read the terminating null byte, and thus hostname[remote_string.len] is guaranteed to be '\0'
 307   process->read_bytes(hostname.data(), remote_string.len, remote(remote_string.data));
 308   info->hostname = mc_model_checker->get_host_name(hostname.data()).c_str();
 309   return info->hostname;
 310 }
 311
 312 const char* Api::actor_get_name(smx_actor_t actor) const
 313 {
 314   if (mc_model_checker == nullptr)
 315     return actor->get_cname();
 316
 317   const simgrid::mc::RemoteSimulation* process = &mc_model_checker->get_remote_simulation();
 318
 319   simgrid::mc::ActorInformation* info = actor_info_cast(actor);
 320   if (info->name.empty()) {
 321     simgrid::xbt::string_data string_data = simgrid::xbt::string::to_string_data(actor->name_);
 322     info->name = process->read_string(remote(string_data.data), string_data.len);
 323   }
 324   return info->name.c_str();
 325 }
 326
 327 void Api::initialize(char** argv) const
 328 {
 329   simgrid::mc::session = new simgrid::mc::Session([argv] {
 330     int i = 1;
 331     while (argv[i] != nullptr && argv[i][0] == '-')
 332       i++;
 333     xbt_assert(argv[i] != nullptr,
 334                "Unable to find a binary to exec on the command line. Did you only pass config flags?");
 335     execvp(argv[i], argv + i);
 336     xbt_die("The model-checked process failed to exec(): %s", strerror(errno));
 337   });
 338 }
 339
 340 std::vector<simgrid::mc::ActorInformation>& Api::get_actors() const
 341 {
 342   return mc_model_checker->get_remote_simulation().actors();
 343 }
 344
 345 bool Api::actor_is_enabled(aid_t pid) const
 346 {
 347   return session->actor_is_enabled(pid);
 348 }
 349
 350 unsigned long Api::get_maxpid() const
 351 {
 352   return MC_smx_get_maxpid();
 353 }
 354
 355 int Api::get_actors_size() const
 356 {
 357   return mc_model_checker->get_remote_simulation().actors().size();
 358 }
 359
 360 RemotePtr<kernel::activity::CommImpl> Api::get_comm_isend_raw_addr(smx_simcall_t request) const
 361 {
 362   auto comm_addr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::ActivityImpl*>(request->result_);
 363   return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
 364 }
 365
 366 RemotePtr<kernel::activity::CommImpl> Api::get_comm_irecv_raw_addr(smx_simcall_t request) const
 367 {
 368   auto comm_addr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::ActivityImpl*>(request->result_);
 369   return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
 370 }
 371
 372 RemotePtr<kernel::activity::CommImpl> Api::get_comm_wait_raw_addr(smx_simcall_t request) const
 373 {
 374   auto comm_addr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::CommImpl*>(request->args_[0]);
 375   return RemotePtr<kernel::activity::CommImpl>(comm_addr);
 376 }
 377
 378 RemotePtr<kernel::activity::CommImpl> Api::get_comm_waitany_raw_addr(smx_simcall_t request, int value) const
 379 {
 380   auto addr      = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::CommImpl**>(request->args_[0]) + value;
 381   auto comm_addr = mc_model_checker->get_remote_simulation().read(remote(addr));
 382   return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
 383 }
 384
 385 std::string Api::get_pattern_comm_rdv(RemotePtr<kernel::activity::CommImpl> const& addr) const
 386 {
 387   Remote<kernel::activity::CommImpl> temp_synchro;
 388   mc_model_checker->get_remote_simulation().read(temp_synchro, addr);
 389   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 390
 391   char* remote_name = mc_model_checker->get_remote_simulation().read<char*>(RemotePtr<char*>(
 392       (uint64_t)(synchro->get_mailbox() ? &synchro->get_mailbox()->get_name() : &synchro->mbox_cpy->get_name())));
 393   auto rdv          = mc_model_checker->get_remote_simulation().read_string(RemotePtr<char>(remote_name));
 394   return rdv;
 395 }
 396
 397 unsigned long Api::get_pattern_comm_src_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
 398 {
 399   Remote<kernel::activity::CommImpl> temp_synchro;
 400   mc_model_checker->get_remote_simulation().read(temp_synchro, addr);
 401   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 402   auto src_proc =
 403       mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->src_actor_.get()))->get_pid();
 404   return src_proc;
 405 }
 406
 407 unsigned long Api::get_pattern_comm_dst_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
 408 {
 409   Remote<kernel::activity::CommImpl> temp_synchro;
 410   mc_model_checker->get_remote_simulation().read(temp_synchro, addr);
 411   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 412   auto src_proc =
 413       mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->dst_actor_.get()))->get_pid();
 414   return src_proc;
 415 }
 416
 417 std::vector<char> Api::get_pattern_comm_data(RemotePtr<kernel::activity::CommImpl> const& addr) const
 418 {
 419   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 420   mc_model_checker->get_remote_simulation().read(temp_comm, addr);
 421   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 422
 423   std::vector<char> buffer{};
 424   if (comm->src_buff_ != nullptr) {
 425     buffer.resize(comm->src_buff_size_);
 426     mc_model_checker->get_remote_simulation().read_bytes(buffer.data(), buffer.size(), remote(comm->src_buff_));
 427   }
 428   return buffer;
 429 }
 430
 431 const char* Api::get_actor_host_name(smx_actor_t actor) const
 432 {
 433   const char* host_name = actor_get_host_name(actor);
 434   return host_name;
 435 }
 436
 437 #if HAVE_SMPI
 438 bool Api::check_send_request_detached(smx_simcall_t const& simcall) const
 439 {
 440   simgrid::smpi::Request mpi_request;
 441   mc_model_checker->get_remote_simulation().read(
 442       &mpi_request, remote(static_cast<smpi::Request*>(simcall_comm_isend__get__data(simcall))));
 443   return mpi_request.detached();
 444 }
 445 #endif
 446
 447 smx_actor_t Api::get_src_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
 448 {
 449   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 450   mc_model_checker->get_remote_simulation().read(temp_comm, comm_addr);
 451   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 452
 453   auto src_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->src_actor_.get()));
 454   return src_proc;
 455 }
 456
 457 smx_actor_t Api::get_dst_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
 458 {
 459   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 460   mc_model_checker->get_remote_simulation().read(temp_comm, comm_addr);
 461   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 462
 463   auto dst_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->dst_actor_.get()));
 464   return dst_proc;
 465 }
 466
 467 std::size_t Api::get_remote_heap_bytes() const
 468 {
 469   RemoteSimulation& process = mc_model_checker->get_remote_simulation();
 470   auto heap_bytes_used      = mmalloc_get_bytes_used_remote(process.get_heap()->heaplimit, process.get_malloc_info());
 471   return heap_bytes_used;
 472 }
 473
 474 void Api::session_initialize() const
 475 {
 476   session->initialize();
 477 }
 478
 479 void Api::mc_inc_visited_states() const
 480 {
 481   mc_model_checker->visited_states++;
 482 }
 483
 484 void Api::mc_inc_executed_trans() const
 485 {
 486   mc_model_checker->executed_transitions++;
 487 }
 488
 489 unsigned long Api::mc_get_visited_states() const
 490 {
 491   return mc_model_checker->visited_states;
 492 }
 493
 494 unsigned long Api::mc_get_executed_trans() const
 495 {
 496   return mc_model_checker->executed_transitions;
 497 }
 498
 499 bool Api::mc_check_deadlock() const
 500 {
 501   return mc_model_checker->checkDeadlock();
 502 }
 503
 504 void Api::mc_show_deadlock() const
 505 {
 506   MC_show_deadlock();
 507 }
 508
 509 /** Get the issuer of a simcall (`req->issuer`)
 510  *
 511  *  In split-process mode, it does the black magic necessary to get an address
 512  *  of a (shallow) copy of the data structure the issuer SIMIX actor in the local
 513  *  address space.
 514  *
 515  *  @param process the MCed process
 516  *  @param req     the simcall (copied in the local process)
 517  */
 518 smx_actor_t Api::simcall_get_issuer(s_smx_simcall const* req) const
 519 {
 520   xbt_assert(mc_model_checker != nullptr);
 521
 522   // This is the address of the smx_actor in the MCed process:
 523   auto address = simgrid::mc::remote(req->issuer_);
 524
 525   // Lookup by address:
 526   for (auto& actor : mc_model_checker->get_remote_simulation().actors())
 527     if (actor.address == address)
 528       return actor.copy.get_buffer();
 529   for (auto& actor : mc_model_checker->get_remote_simulation().dead_actors())
 530     if (actor.address == address)
 531       return actor.copy.get_buffer();
 532
 533   xbt_die("Issuer not found");
 534 }
 535
 536 long Api::simcall_get_actor_id(s_smx_simcall const* req) const
 537 {
 538   return simcall_get_issuer(req)->get_pid();
 539 }
 540
 541 RemotePtr<kernel::activity::MailboxImpl> Api::get_mbox_remote_addr(smx_simcall_t const req) const
 542 {
 543   RemotePtr<kernel::activity::MailboxImpl> mbox_addr;
 544   switch (req->call_) {
 545     case Simcall::COMM_ISEND:
 546     case Simcall::COMM_IRECV: {
 547       auto mbox_addr_ptr = simix::unmarshal<smx_mailbox_t>(req->args_[1]);
 548       mbox_addr          = remote(mbox_addr_ptr);
 549       break;
 550     }
 551     default:
 552       mbox_addr = RemotePtr<kernel::activity::MailboxImpl>();
 553       break;
 554   }
 555   return mbox_addr;
 556 }
 557
 558 RemotePtr<kernel::activity::ActivityImpl> Api::get_comm_remote_addr(smx_simcall_t const req) const
 559 {
 560   RemotePtr<kernel::activity::ActivityImpl> comm_addr;
 561   switch (req->call_) {
 562     case Simcall::COMM_ISEND:
 563     case Simcall::COMM_IRECV: {
 564       auto comm_addr_ptr = simgrid::simix::unmarshal_raw<simgrid::kernel::activity::ActivityImpl*>(req->result_);
 565       comm_addr          = remote(comm_addr_ptr);
 566       break;
 567     }
 568     default:
 569       comm_addr = RemotePtr<kernel::activity::ActivityImpl>();
 570       break;
 571   }
 572   return comm_addr;
 573 }
 574
 575 bool Api::mc_is_null() const
 576 {
 577   auto is_null = (mc_model_checker == nullptr) ? true : false;
 578   return is_null;
 579 }
 580
 581 Checker* Api::mc_get_checker() const
 582 {
 583   return mc_model_checker->getChecker();
 584 }
 585
 586 void Api::set_checker(Checker* const checker) const
 587 {
 588   xbt_assert(mc_model_checker);
 589   xbt_assert(mc_model_checker->getChecker() == nullptr);
 590   mc_model_checker->setChecker(checker);
 591 }
 592
 593 void Api::handle_simcall(Transition const& transition) const
 594 {
 595   mc_model_checker->handle_simcall(transition);
 596 }
 597
 598 void Api::mc_wait_for_requests() const
 599 {
 600   mc_model_checker->wait_for_requests();
 601 }
 602
 603 void Api::mc_exit(int status) const
 604 {
 605   mc_model_checker->exit(status);
 606 }
 607
 608 std::string const& Api::mc_get_host_name(std::string const& hostname) const
 609 {
 610   return mc_model_checker->get_host_name(hostname);
 611 }
 612
 613 void Api::dump_record_path() const
 614 {
 615   simgrid::mc::dumpRecordPath();
 616 }
 617
 618 smx_simcall_t Api::mc_state_choose_request(simgrid::mc::State* state) const
 619 {
 620   for (auto& actor : mc_model_checker->get_remote_simulation().actors()) {
 621     /* Only consider the actors that were marked as interleaving by the checker algorithm */
 622     if (not state->actor_states_[actor.copy.get_buffer()->get_pid()].is_todo())
 623       continue;
 624
 625     smx_simcall_t res = MC_state_choose_request_for_process(state, actor.copy.get_buffer());
 626     if (res)
 627       return res;
 628   }
 629   return nullptr;
 630 }
 631
 632 std::list<transition_detail_t> Api::get_enabled_transitions(simgrid::mc::State* state)
 633 {
 634   std::list<transition_detail_t> tr_list{};
 635
 636   for (auto& actor : mc_model_checker->get_remote_simulation().actors()) {
 637     auto actor_pid  = actor.copy.get_buffer()->get_pid();
 638     auto actor_impl = actor.copy.get_buffer();
 639
 640     // Only consider the actors that were marked as interleaving by the checker algorithm
 641     if (not state->actor_states_[actor_pid].is_todo())
 642       continue;
 643     // Not executable in the application
 644     if (not simgrid::mc::actor_is_enabled(actor_impl))
 645       continue;
 646
 647     transition_detail_t transition = std::unique_ptr<s_transition_detail>(new s_transition_detail());
 648     Simcall simcall_call                = actor_impl->simcall_.call_;
 649     smx_simcall_t simcall               = &actor_impl->simcall_;
 650     transition->call_             = simcall_call;
 651     switch (simcall_call) {
 652       case Simcall::COMM_ISEND:
 653       case Simcall::COMM_IRECV: {
 654         transition->mbox_remote_addr = get_mbox_remote_addr(simcall);
 655         transition->comm_remote_addr = get_comm_remote_addr(simcall);
 656         break;
 657       }
 658
 659       default:
 660         break;
 661     }
 662     tr_list.emplace_back(std::move(transition));
 663   }
 664
 665   return tr_list;
 666 }
 667
 668 bool Api::simcall_check_dependency(smx_simcall_t const req1, smx_simcall_t const req2) const
 669 {
 670   if (req1->issuer_ == req2->issuer_)
 671     return false;
 672
 673   /* Wait with timeout transitions are not considered by the independence theorem, thus we consider them as dependent
 674    * with all other transitions */
 675   if ((req1->call_ == Simcall::COMM_WAIT && simcall_comm_wait__get__timeout(req1) > 0) ||
 676       (req2->call_ == Simcall::COMM_WAIT && simcall_comm_wait__get__timeout(req2) > 0))
 677     return true;
 678
 679   if (req1->call_ != req2->call_)
 680     return request_depend_asymmetric(req1, req2) && request_depend_asymmetric(req2, req1);
 681
 682   // Those are internal requests, we do not need indirection because those objects are copies:
 683   const kernel::activity::CommImpl* synchro1 = get_comm(req1);
 684   const kernel::activity::CommImpl* synchro2 = get_comm(req2);
 685
 686   switch (req1->call_) {
 687     case Simcall::COMM_ISEND:
 688       return simcall_comm_isend__get__mbox(req1) == simcall_comm_isend__get__mbox(req2);
 689     case Simcall::COMM_IRECV:
 690       return simcall_comm_irecv__get__mbox(req1) == simcall_comm_irecv__get__mbox(req2);
 691     case Simcall::COMM_WAIT:
 692       if (synchro1->src_buff_ == synchro2->src_buff_ && synchro1->dst_buff_ == synchro2->dst_buff_)
 693         return false;
 694       if (synchro1->src_buff_ != nullptr && synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr &&
 695           synchro2->dst_buff_ != nullptr && synchro1->dst_buff_ != synchro2->src_buff_ &&
 696           synchro1->dst_buff_ != synchro2->dst_buff_ && synchro2->dst_buff_ != synchro1->src_buff_)
 697         return false;
 698       return true;
 699     default:
 700       return true;
 701   }
 702 }
 703
 704 std::string Api::request_to_string(smx_simcall_t req, int value, RequestType request_type) const
 705 {
 706   xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
 707
 708   bool use_remote_comm = true;
 709   switch (request_type) {
 710     case simgrid::mc::RequestType::simix:
 711       use_remote_comm = true;
 712       break;
 713     case simgrid::mc::RequestType::executed:
 714     case simgrid::mc::RequestType::internal:
 715       use_remote_comm = false;
 716       break;
 717     default:
 718       THROW_IMPOSSIBLE;
 719   }
 720
 721   const char* type = nullptr;
 722   char* args       = nullptr;
 723
 724   smx_actor_t issuer = simcall_get_issuer(req);
 725
 726   if (issuer->simcall_.inspector_ != nullptr) {
 727     return mc_model_checker->simcall_to_string(issuer->get_pid(), value);
 728
 729   } else
 730     switch (req->call_) {
 731       case Simcall::COMM_ISEND: {
 732         type     = "iSend";
 733         char* p  = pointer_to_string(simcall_comm_isend__get__src_buff(req));
 734         char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
 735         if (issuer->get_host())
 736           args = bprintf("src=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), actor_get_host_name(issuer),
 737                          actor_get_name(issuer), p, bs);
 738         else
 739           args = bprintf("src=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), actor_get_name(issuer), p, bs);
 740         xbt_free(bs);
 741         xbt_free(p);
 742         break;
 743       }
 744
 745       case Simcall::COMM_IRECV: {
 746         size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
 747         size_t size         = 0;
 748         if (remote_size)
 749           mc_model_checker->get_remote_simulation().read_bytes(&size, sizeof(size), remote(remote_size));
 750
 751         type     = "iRecv";
 752         char* p  = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
 753         char* bs = buff_size_to_string(size);
 754         if (issuer->get_host())
 755           args = bprintf("dst=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), actor_get_host_name(issuer),
 756                          actor_get_name(issuer), p, bs);
 757         else
 758           args = bprintf("dst=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), actor_get_name(issuer), p, bs);
 759         xbt_free(bs);
 760         xbt_free(p);
 761         break;
 762       }
 763
 764       case Simcall::COMM_WAIT: {
 765         simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 766         char* p;
 767         if (value == -1) {
 768           type = "WaitTimeout";
 769           p    = pointer_to_string(remote_act);
 770           args = bprintf("comm=%s", p);
 771         } else {
 772           type = "Wait";
 773           p    = pointer_to_string(remote_act);
 774
 775           simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 776           const simgrid::kernel::activity::CommImpl* act;
 777           if (use_remote_comm) {
 778             mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 779             act = temp_synchro.get_buffer();
 780           } else
 781             act = remote_act;
 782
 783           smx_actor_t src_proc =
 784               mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 785           smx_actor_t dst_proc =
 786               mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 787           args = bprintf("comm=%s [(%ld)%s (%s)-> (%ld)%s (%s)]", p, src_proc ? src_proc->get_pid() : 0,
 788                          src_proc ? actor_get_host_name(src_proc) : "", src_proc ? actor_get_name(src_proc) : "",
 789                          dst_proc ? dst_proc->get_pid() : 0, dst_proc ? actor_get_host_name(dst_proc) : "",
 790                          dst_proc ? actor_get_name(dst_proc) : "");
 791         }
 792         xbt_free(p);
 793         break;
 794       }
 795
 796       case Simcall::COMM_TEST: {
 797         simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_test__getraw__comm(req);
 798         simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 799         const simgrid::kernel::activity::CommImpl* act;
 800         if (use_remote_comm) {
 801           mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 802           act = temp_synchro.get_buffer();
 803         } else
 804           act = remote_act;
 805
 806         char* p;
 807         if (act->src_actor_.get() == nullptr || act->dst_actor_.get() == nullptr) {
 808           type = "Test FALSE";
 809           p    = pointer_to_string(remote_act);
 810           args = bprintf("comm=%s", p);
 811         } else {
 812           type = "Test TRUE";
 813           p    = pointer_to_string(remote_act);
 814
 815           smx_actor_t src_proc =
 816               mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 817           smx_actor_t dst_proc =
 818               mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 819           args = bprintf("comm=%s [(%ld)%s (%s) -> (%ld)%s (%s)]", p, src_proc->get_pid(), actor_get_name(src_proc),
 820                          actor_get_host_name(src_proc), dst_proc->get_pid(), actor_get_name(dst_proc),
 821                          actor_get_host_name(dst_proc));
 822         }
 823         xbt_free(p);
 824         break;
 825       }
 826
 827       case Simcall::COMM_WAITANY: {
 828         type         = "WaitAny";
 829         size_t count = simcall_comm_waitany__get__count(req);
 830         if (count > 0) {
 831           simgrid::kernel::activity::CommImpl* remote_sync;
 832           remote_sync =
 833               mc_model_checker->get_remote_simulation().read(remote(simcall_comm_waitany__get__comms(req) + value));
 834           char* p = pointer_to_string(remote_sync);
 835           args    = bprintf("comm=%s (%d of %zu)", p, value + 1, count);
 836           xbt_free(p);
 837         } else
 838           args = bprintf("comm at idx %d", value);
 839         break;
 840       }
 841
 842       case Simcall::COMM_TESTANY:
 843         if (value == -1) {
 844           type = "TestAny FALSE";
 845           args = xbt_strdup("-");
 846         } else {
 847           type = "TestAny";
 848           args = bprintf("(%d of %zu)", value + 1, simcall_comm_testany__get__count(req));
 849         }
 850         break;
 851
 852       case Simcall::MUTEX_TRYLOCK:
 853       case Simcall::MUTEX_LOCK: {
 854         if (req->call_ == Simcall::MUTEX_LOCK)
 855           type = "Mutex LOCK";
 856         else
 857           type = "Mutex TRYLOCK";
 858
 859         simgrid::mc::Remote<simgrid::kernel::activity::MutexImpl> mutex;
 860         mc_model_checker->get_remote_simulation().read_bytes(mutex.get_buffer(), sizeof(mutex),
 861                                                              remote(req->call_ == Simcall::MUTEX_LOCK
 862                                                                         ? simcall_mutex_lock__get__mutex(req)
 863                                                                         : simcall_mutex_trylock__get__mutex(req)));
 864         args = bprintf("locked = %d, owner = %d, sleeping = n/a", mutex.get_buffer()->is_locked(),
 865                        mutex.get_buffer()->get_owner() != nullptr
 866                            ? (int)mc_model_checker->get_remote_simulation()
 867                                  .resolve_actor(simgrid::mc::remote(mutex.get_buffer()->get_owner()))
 868                                  ->get_pid()
 869                            : -1);
 870         break;
 871       }
 872
 873       default:
 874         type = SIMIX_simcall_name(req->call_);
 875         args = bprintf("??");
 876         break;
 877     }
 878
 879   std::string str;
 880   if (args != nullptr)
 881     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s(%s)", issuer->get_pid(), actor_get_host_name(issuer),
 882                                       actor_get_name(issuer), type, args);
 883   else
 884     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s ", issuer->get_pid(), actor_get_host_name(issuer),
 885                                       actor_get_name(issuer), type);
 886   xbt_free(args);
 887   return str;
 888 }
 889
 890 std::string Api::request_get_dot_output(smx_simcall_t req, int value) const
 891 {
 892   const smx_actor_t issuer = simcall_get_issuer(req);
 893   const char* color        = get_color(issuer->get_pid() - 1);
 894
 895   std::string label;
 896
 897   if (req->inspector_ != nullptr) {
 898     label = mc_model_checker->simcall_dot_label(issuer->get_pid(), value);
 899   } else
 900     switch (req->call_) {
 901       case Simcall::COMM_ISEND:
 902         if (issuer->get_host())
 903           label = xbt::string_printf("[(%ld)%s] iSend", issuer->get_pid(), actor_get_host_name(issuer));
 904         else
 905           label = bprintf("[(%ld)] iSend", issuer->get_pid());
 906         break;
 907
 908       case Simcall::COMM_IRECV:
 909         if (issuer->get_host())
 910           label = xbt::string_printf("[(%ld)%s] iRecv", issuer->get_pid(), actor_get_host_name(issuer));
 911         else
 912           label = xbt::string_printf("[(%ld)] iRecv", issuer->get_pid());
 913         break;
 914
 915       case Simcall::COMM_WAIT:
 916         if (value == -1) {
 917           if (issuer->get_host())
 918             label = xbt::string_printf("[(%ld)%s] WaitTimeout", issuer->get_pid(), actor_get_host_name(issuer));
 919           else
 920             label = xbt::string_printf("[(%ld)] WaitTimeout", issuer->get_pid());
 921         } else {
 922           kernel::activity::ActivityImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 923           Remote<kernel::activity::CommImpl> temp_comm;
 924           mc_model_checker->get_remote_simulation().read(temp_comm,
 925                                                          remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 926           const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 927
 928           const kernel::actor::ActorImpl* src_proc =
 929               mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->src_actor_.get()));
 930           const kernel::actor::ActorImpl* dst_proc =
 931               mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->dst_actor_.get()));
 932           if (issuer->get_host())
 933             label = xbt::string_printf("[(%ld)%s] Wait [(%ld)->(%ld)]", issuer->get_pid(), actor_get_host_name(issuer),
 934                                        src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 935           else
 936             label = xbt::string_printf("[(%ld)] Wait [(%ld)->(%ld)]", issuer->get_pid(),
 937                                        src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 938         }
 939         break;
 940
 941       case Simcall::COMM_TEST: {
 942         kernel::activity::ActivityImpl* remote_act = simcall_comm_test__getraw__comm(req);
 943         Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 944         mc_model_checker->get_remote_simulation().read(temp_comm,
 945                                                        remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 946         const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 947         if (comm->src_actor_.get() == nullptr || comm->dst_actor_.get() == nullptr) {
 948           if (issuer->get_host())
 949             label = xbt::string_printf("[(%ld)%s] Test FALSE", issuer->get_pid(), actor_get_host_name(issuer));
 950           else
 951             label = bprintf("[(%ld)] Test FALSE", issuer->get_pid());
 952         } else {
 953           if (issuer->get_host())
 954             label = xbt::string_printf("[(%ld)%s] Test TRUE", issuer->get_pid(), actor_get_host_name(issuer));
 955           else
 956             label = xbt::string_printf("[(%ld)] Test TRUE", issuer->get_pid());
 957         }
 958         break;
 959       }
 960
 961       case Simcall::COMM_WAITANY: {
 962         size_t comms_size = simcall_comm_waitany__get__count(req);
 963         if (issuer->get_host())
 964           label = xbt::string_printf("[(%ld)%s] WaitAny [%d of %zu]", issuer->get_pid(), actor_get_host_name(issuer),
 965                                      value + 1, comms_size);
 966         else
 967           label = xbt::string_printf("[(%ld)] WaitAny [%d of %zu]", issuer->get_pid(), value + 1, comms_size);
 968         break;
 969       }
 970
 971       case Simcall::COMM_TESTANY:
 972         if (value == -1) {
 973           if (issuer->get_host())
 974             label = xbt::string_printf("[(%ld)%s] TestAny FALSE", issuer->get_pid(), actor_get_host_name(issuer));
 975           else
 976             label = xbt::string_printf("[(%ld)] TestAny FALSE", issuer->get_pid());
 977         } else {
 978           if (issuer->get_host())
 979             label = xbt::string_printf("[(%ld)%s] TestAny TRUE [%d of %lu]", issuer->get_pid(),
 980                                        actor_get_host_name(issuer), value + 1, simcall_comm_testany__get__count(req));
 981           else
 982             label = xbt::string_printf("[(%ld)] TestAny TRUE [%d of %lu]", issuer->get_pid(), value + 1,
 983                                        simcall_comm_testany__get__count(req));
 984         }
 985         break;
 986
 987       case Simcall::MUTEX_TRYLOCK:
 988         label = xbt::string_printf("[(%ld)] Mutex TRYLOCK", issuer->get_pid());
 989         break;
 990
 991       case Simcall::MUTEX_LOCK:
 992         label = xbt::string_printf("[(%ld)] Mutex LOCK", issuer->get_pid());
 993         break;
 994
 995       default:
 996         THROW_UNIMPLEMENTED;
 997     }
 998
 999   return xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s", label.c_str(), color, color);
1000 }
1001
1002 const char* Api::simcall_get_name(simgrid::simix::Simcall kind) const
1003 {
1004   return simcall_names[static_cast<int>(kind)];
1005 }
1006
1007 #if HAVE_SMPI
1008 int Api::get_smpi_request_tag(smx_simcall_t const& simcall, simgrid::simix::Simcall type) const
1009 {
1010   simgrid::smpi::Request mpi_request;
1011   void* simcall_data = nullptr;
1012   if (type == Simcall::COMM_ISEND)
1013     simcall_data = simcall_comm_isend__get__data(simcall);
1014   else if (type == Simcall::COMM_IRECV)
1015     simcall_data = simcall_comm_irecv__get__data(simcall);
1016   mc_model_checker->get_remote_simulation().read(&mpi_request, remote(static_cast<smpi::Request*>(simcall_data)));
1017   return mpi_request.tag();
1018 }
1019 #endif
1020
1021 void Api::restore_state(std::shared_ptr<simgrid::mc::Snapshot> system_state) const
1022 {
1023   system_state->restore(&mc_model_checker->get_remote_simulation());
1024 }
1025
1026 void Api::log_state() const
1027 {
1028   session->log_state();
1029 }
1030
1031 bool Api::snapshot_equal(const Snapshot* s1, const Snapshot* s2) const
1032 {
1033   return simgrid::mc::snapshot_equal(s1, s2);
1034 }
1035
1036 simgrid::mc::Snapshot* Api::take_snapshot(int num_state) const
1037 {
1038   auto snapshot = new simgrid::mc::Snapshot(num_state);
1039   return snapshot;
1040 }
1041
1042 void Api::s_close() const
1043 {
1044   session->close();
1045 }
1046
1047 void Api::restore_initial_state() const
1048 {
1049   session->restore_initial_state();
1050 }
1051
1052 void Api::execute(Transition& transition, smx_simcall_t simcall) const
1053 {
1054   /* FIXME: once all simcalls have observers, kill the simcall parameter and use mc_model_checker->simcall_to_string() */
1055   auto textual =
1056       simgrid::mc::Api::get().request_to_string(simcall, transition.times_considered_, RequestType::executed);
1057   strcpy((char*)transition.textual, textual.c_str());
1058
1059   session->execute(transition);
1060 }
1061
1062 #if SIMGRID_HAVE_MC
1063 void Api::automaton_load(const char* file) const
1064 {
1065   MC_automaton_load(file);
1066 }
1067 #endif
1068
1069 std::vector<int> Api::automaton_propositional_symbol_evaluate() const
1070 {
1071   unsigned int cursor = 0;
1072   std::vector<int> values;
1073   xbt_automaton_propositional_symbol_t ps = nullptr;
1074   xbt_dynar_foreach (mc::property_automaton->propositional_symbols, cursor, ps)
1075     values.push_back(xbt_automaton_propositional_symbol_evaluate(ps));
1076   return values;
1077 }
1078
1079 std::vector<xbt_automaton_state_t> Api::get_automaton_state() const
1080 {
1081   std::vector<xbt_automaton_state_t> automaton_stack;
1082   unsigned int cursor = 0;
1083   xbt_automaton_state_t automaton_state;
1084   xbt_dynar_foreach (mc::property_automaton->states, cursor, automaton_state)
1085     if (automaton_state->type == -1)
1086       automaton_stack.push_back(automaton_state);
1087   return automaton_stack;
1088 }
1089
1090 int Api::compare_automaton_exp_label(const xbt_automaton_exp_label* l) const
1091 {
1092   unsigned int cursor                    = 0;
1093   xbt_automaton_propositional_symbol_t p = nullptr;
1094   xbt_dynar_foreach (simgrid::mc::property_automaton->propositional_symbols, cursor, p) {
1095     if (std::strcmp(xbt_automaton_propositional_symbol_get_name(p), l->u.predicat) == 0)
1096       return cursor;
1097   }
1098   return -1;
1099 }
1100
1101 void Api::set_property_automaton(xbt_automaton_state_t const& automaton_state) const
1102 {
1103   mc::property_automaton->current_state = automaton_state;
1104 }
1105
1106 xbt_automaton_exp_label_t Api::get_automaton_transition_label(xbt_dynar_t const& dynar, int index) const
1107 {
1108   const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
1109   return transition->label;
1110 }
1111
1112 xbt_automaton_state_t Api::get_automaton_transition_dst(xbt_dynar_t const& dynar, int index) const
1113 {
1114   const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
1115   return transition->dst;
1116 }
1117
1118 } // namespace mc
1119 } // namespace simgrid