src/mc/api.cpp

   1 /* Copyright (c) 2020-2022. The SimGrid Team. All rights reserved.          */
   2
   3 /* This program is free software; you can redistribute it and/or modify it
   4  * under the terms of the license (GNU LGPL) which comes with this package. */
   5
   6 #include "api.hpp"
   7
   8 #include "src/kernel/activity/MailboxImpl.hpp"
   9 #include "src/kernel/activity/MutexImpl.hpp"
  10 #include "src/kernel/actor/SimcallObserver.hpp"
  11 #include "src/mc/Session.hpp"
  12 #include "src/mc/checker/Checker.hpp"
  13 #include "src/mc/mc_base.hpp"
  14 #include "src/mc/mc_comm_pattern.hpp"
  15 #include "src/mc/mc_exit.hpp"
  16 #include "src/mc/mc_pattern.hpp"
  17 #include "src/mc/mc_private.hpp"
  18 #include "src/mc/remote/RemoteProcess.hpp"
  19 #include "src/surf/HostImpl.hpp"
  20
  21 #include <xbt/asserts.h>
  22 #include <xbt/log.h>
  23 #include "simgrid/s4u/Host.hpp"
  24 #include "xbt/string.hpp"
  25 #if HAVE_SMPI
  26 #include "src/smpi/include/smpi_request.hpp"
  27 #endif
  28
  29 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(Api, mc, "Logging specific to MC Facade APIs ");
  30 XBT_LOG_EXTERNAL_CATEGORY(mc_global);
  31
  32 using Simcall = simgrid::simix::Simcall;
  33
  34 namespace simgrid {
  35 namespace mc {
  36
  37 static inline const char* get_color(int id)
  38 {
  39   static constexpr std::array<const char*, 13> colors{{"blue", "red", "green3", "goldenrod", "brown", "purple",
  40                                                        "magenta", "turquoise4", "gray25", "forestgreen", "hotpink",
  41                                                        "lightblue", "tan"}};
  42   return colors[id % colors.size()];
  43 }
  44
  45 static std::string pointer_to_string(void* pointer)
  46 {
  47   return XBT_LOG_ISENABLED(Api, xbt_log_priority_verbose) ? xbt::string_printf("%p", pointer) : "(verbose only)";
  48 }
  49
  50 static std::string buff_size_to_string(size_t buff_size)
  51 {
  52   return XBT_LOG_ISENABLED(Api, xbt_log_priority_verbose) ? std::to_string(buff_size) : "(verbose only)";
  53 }
  54
  55 /* Search an enabled transition for the given process.
  56  *
  57  * This can be seen as an iterator returning the next transition of the process.
  58  *
  59  * We only consider the processes that are both
  60  *  - marked "to be interleaved" in their ActorState (controlled by the checker algorithm).
  61  *  - which simcall can currently be executed (like a comm where the other partner is already known)
  62  * Once we returned the last enabled transition of a process, it is marked done.
  63  *
  64  * Things can get muddled with the WAITANY and TESTANY simcalls, that are rewritten on the fly to a bunch of WAIT
  65  * (resp TEST) transitions using the transition.argument field to remember what was the last returned sub-transition.
  66  */
  67 static inline smx_simcall_t MC_state_choose_request_for_process(const RemoteProcess& process, simgrid::mc::State* state,
  68                                                                 smx_actor_t actor)
  69 {
  70   /* reset the outgoing transition */
  71   simgrid::mc::ActorState* procstate = &state->actor_states_[actor->get_pid()];
  72   state->transition_.aid_              = -1;
  73   state->transition_.times_considered_ = -1;
  74   state->transition_.textual[0]        = '\0';
  75   state->executed_req_.call_         = Simcall::NONE;
  76
  77   if (not simgrid::mc::actor_is_enabled(actor))
  78     return nullptr; // Not executable in the application
  79
  80   smx_simcall_t req = nullptr;
  81   if (actor->simcall_.observer_ != nullptr) {
  82     state->transition_.times_considered_ = procstate->get_times_considered_and_inc();
  83     if (actor->simcall_.mc_max_consider_ <= procstate->get_times_considered())
  84       procstate->set_done();
  85     req = &actor->simcall_;
  86   } else {
  87     procstate->set_done();
  88     state->transition_.times_considered_ = 0;
  89     req                                  = &actor->simcall_;
  90   }
  91   if (not req)
  92     return nullptr;
  93
  94   state->transition_.aid_ = actor->get_pid();
  95   state->executed_req_    = *req;
  96
  97   return req;
  98 }
  99
 100 kernel::activity::CommImpl* Api::get_comm_or_nullptr(smx_simcall_t const r) const
 101 {
 102   if (auto wait = dynamic_cast<kernel::actor::ActivityWaitSimcall*>(r->observer_))
 103     return static_cast<kernel::activity::CommImpl*>(wait->get_activity());
 104   if (auto test = dynamic_cast<kernel::actor::ActivityTestSimcall*>(r->observer_))
 105     return static_cast<kernel::activity::CommImpl*>(test->get_activity());
 106   return nullptr;
 107 }
 108
 109 /** Statically "upcast" a s_smx_actor_t into an ActorInformation
 110  *
 111  *  This gets 'actorInfo' from '&actorInfo->copy'. It upcasts in the
 112  *  sense that we could achieve the same thing by having ActorInformation
 113  *  inherit from s_smx_actor_t but we don't really want to do that.
 114  */
 115 simgrid::mc::ActorInformation* Api::actor_info_cast(smx_actor_t actor) const
 116 {
 117   simgrid::mc::ActorInformation temp;
 118   std::size_t offset = (char*)temp.copy.get_buffer() - (char*)&temp;
 119
 120   auto* process_info = reinterpret_cast<simgrid::mc::ActorInformation*>((char*)actor - offset);
 121   return process_info;
 122 }
 123
 124 bool Api::requests_are_dependent(RemotePtr<kernel::actor::SimcallObserver> obs1,
 125                                  RemotePtr<kernel::actor::SimcallObserver> obs2) const
 126 {
 127   xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
 128
 129   return mc_model_checker->requests_are_dependent(obs1, obs2);
 130 }
 131
 132 xbt::string const& Api::get_actor_host_name(smx_actor_t actor) const
 133 {
 134   if (mc_model_checker == nullptr)
 135     return actor->get_host()->get_name();
 136
 137   const simgrid::mc::RemoteProcess* process = &mc_model_checker->get_remote_process();
 138
 139   // Read the simgrid::xbt::string in the MCed process:
 140   simgrid::mc::ActorInformation* info = actor_info_cast(actor);
 141
 142   if (not info->hostname) {
 143     Remote<s4u::Host> temp_host = process->read(remote(actor->get_host()));
 144     auto remote_string_address  = remote(&xbt::string::to_string_data(temp_host.get_buffer()->get_impl()->get_name()));
 145     simgrid::xbt::string_data remote_string = process->read(remote_string_address);
 146     std::vector<char> hostname(remote_string.len + 1);
 147     // no need to read the terminating null byte, and thus hostname[remote_string.len] is guaranteed to be '\0'
 148     process->read_bytes(hostname.data(), remote_string.len, remote(remote_string.data));
 149     info->hostname = &mc_model_checker->get_host_name(hostname.data());
 150   }
 151   return *info->hostname;
 152 }
 153
 154 xbt::string const& Api::get_actor_name(smx_actor_t actor) const
 155 {
 156   if (mc_model_checker == nullptr)
 157     return actor->get_name();
 158
 159   simgrid::mc::ActorInformation* info = actor_info_cast(actor);
 160   if (info->name.empty()) {
 161     const simgrid::mc::RemoteProcess* process = &mc_model_checker->get_remote_process();
 162
 163     simgrid::xbt::string_data string_data = simgrid::xbt::string::to_string_data(actor->name_);
 164     info->name = process->read_string(remote(string_data.data), string_data.len);
 165   }
 166   return info->name;
 167 }
 168
 169 std::string Api::get_actor_string(smx_actor_t actor) const
 170 {
 171   std::string res;
 172   if (actor) {
 173     res = "(" + std::to_string(actor->get_pid()) + ")";
 174     if (actor->get_host())
 175       res += std::string(get_actor_host_name(actor)) + " (" + std::string(get_actor_name(actor)) + ")";
 176     else
 177       res += get_actor_name(actor);
 178   } else
 179     res = "(0) ()";
 180   return res;
 181 }
 182
 183 std::string Api::get_actor_dot_label(smx_actor_t actor) const
 184 {
 185   std::string res = "(" + std::to_string(actor->get_pid()) + ")";
 186   if (actor->get_host())
 187     res += get_actor_host_name(actor);
 188   return res;
 189 }
 190
 191 simgrid::mc::Checker* Api::initialize(char** argv, simgrid::mc::CheckerAlgorithm algo) const
 192 {
 193   auto session = new simgrid::mc::Session([argv] {
 194     int i = 1;
 195     while (argv[i] != nullptr && argv[i][0] == '-')
 196       i++;
 197     xbt_assert(argv[i] != nullptr,
 198                "Unable to find a binary to exec on the command line. Did you only pass config flags?");
 199     execvp(argv[i], argv + i);
 200     xbt_die("The model-checked process failed to exec(%s): %s", argv[i], strerror(errno));
 201   });
 202
 203   simgrid::mc::Checker* checker;
 204   switch (algo) {
 205     case CheckerAlgorithm::CommDeterminism:
 206       checker = simgrid::mc::create_communication_determinism_checker(session);
 207       break;
 208
 209     case CheckerAlgorithm::UDPOR:
 210       checker = simgrid::mc::create_udpor_checker(session);
 211       break;
 212
 213     case CheckerAlgorithm::Safety:
 214       checker = simgrid::mc::create_safety_checker(session);
 215       break;
 216
 217     case CheckerAlgorithm::Liveness:
 218       checker = simgrid::mc::create_liveness_checker(session);
 219       break;
 220
 221     default:
 222       THROW_IMPOSSIBLE;
 223   }
 224
 225   // FIXME: session and checker are never deleted
 226   simgrid::mc::session_singleton = session;
 227   mc_model_checker->setChecker(checker);
 228   return checker;
 229 }
 230
 231 std::vector<simgrid::mc::ActorInformation>& Api::get_actors() const
 232 {
 233   return mc_model_checker->get_remote_process().actors();
 234 }
 235
 236 unsigned long Api::get_maxpid() const
 237 {
 238   return mc_model_checker->get_remote_process().get_maxpid();
 239 }
 240
 241 int Api::get_actors_size() const
 242 {
 243   return mc_model_checker->get_remote_process().actors().size();
 244 }
 245
 246 RemotePtr<kernel::activity::CommImpl> Api::get_comm_isend_raw_addr(smx_simcall_t request) const
 247 {
 248   return remote(static_cast<kernel::activity::CommImpl*>(simcall_comm_isend__getraw__result(request)));
 249 }
 250
 251 RemotePtr<kernel::activity::CommImpl> Api::get_comm_waitany_raw_addr(smx_simcall_t request, int value) const
 252 {
 253   auto addr      = simcall_comm_waitany__getraw__comms(request) + value;
 254   auto comm_addr = mc_model_checker->get_remote_process().read(remote(addr));
 255   return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
 256 }
 257
 258 std::string Api::get_pattern_comm_rdv(RemotePtr<kernel::activity::CommImpl> const& addr) const
 259 {
 260   Remote<kernel::activity::CommImpl> temp_activity;
 261   mc_model_checker->get_remote_process().read(temp_activity, addr);
 262   const kernel::activity::CommImpl* activity = temp_activity.get_buffer();
 263
 264   char* remote_name = mc_model_checker->get_remote_process().read<char*>(RemotePtr<char*>(
 265       (uint64_t)(activity->get_mailbox() ? &activity->get_mailbox()->get_name() : &activity->mbox_cpy->get_name())));
 266   auto rdv          = mc_model_checker->get_remote_process().read_string(RemotePtr<char>(remote_name));
 267   return rdv;
 268 }
 269
 270 unsigned long Api::get_pattern_comm_src_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
 271 {
 272   Remote<kernel::activity::CommImpl> temp_activity;
 273   mc_model_checker->get_remote_process().read(temp_activity, addr);
 274   const kernel::activity::CommImpl* activity = temp_activity.get_buffer();
 275   auto src_proc =
 276       mc_model_checker->get_remote_process().resolve_actor(mc::remote(activity->src_actor_.get()))->get_pid();
 277   return src_proc;
 278 }
 279
 280 unsigned long Api::get_pattern_comm_dst_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
 281 {
 282   Remote<kernel::activity::CommImpl> temp_activity;
 283   mc_model_checker->get_remote_process().read(temp_activity, addr);
 284   const kernel::activity::CommImpl* activity = temp_activity.get_buffer();
 285   auto src_proc =
 286       mc_model_checker->get_remote_process().resolve_actor(mc::remote(activity->dst_actor_.get()))->get_pid();
 287   return src_proc;
 288 }
 289
 290 std::vector<char> Api::get_pattern_comm_data(RemotePtr<kernel::activity::CommImpl> const& addr) const
 291 {
 292   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 293   mc_model_checker->get_remote_process().read(temp_comm, addr);
 294   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 295
 296   std::vector<char> buffer{};
 297   if (comm->src_buff_ != nullptr) {
 298     buffer.resize(comm->src_buff_size_);
 299     mc_model_checker->get_remote_process().read_bytes(buffer.data(), buffer.size(), remote(comm->src_buff_));
 300   }
 301   return buffer;
 302 }
 303
 304 #if HAVE_SMPI
 305 bool Api::check_send_request_detached(smx_simcall_t const& simcall) const
 306 {
 307   Remote<simgrid::smpi::Request> mpi_request;
 308   mc_model_checker->get_remote_process().read(
 309       mpi_request, remote(static_cast<smpi::Request*>(simcall_comm_isend__get__data(simcall))));
 310   return mpi_request.get_buffer()->detached();
 311 }
 312 #endif
 313
 314 smx_actor_t Api::get_src_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
 315 {
 316   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 317   mc_model_checker->get_remote_process().read(temp_comm, comm_addr);
 318   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 319
 320   auto src_proc = mc_model_checker->get_remote_process().resolve_actor(simgrid::mc::remote(comm->src_actor_.get()));
 321   return src_proc;
 322 }
 323
 324 smx_actor_t Api::get_dst_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
 325 {
 326   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 327   mc_model_checker->get_remote_process().read(temp_comm, comm_addr);
 328   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 329
 330   auto dst_proc = mc_model_checker->get_remote_process().resolve_actor(simgrid::mc::remote(comm->dst_actor_.get()));
 331   return dst_proc;
 332 }
 333
 334 std::size_t Api::get_remote_heap_bytes() const
 335 {
 336   RemoteProcess& process    = mc_model_checker->get_remote_process();
 337   auto heap_bytes_used      = mmalloc_get_bytes_used_remote(process.get_heap()->heaplimit, process.get_malloc_info());
 338   return heap_bytes_used;
 339 }
 340
 341 void Api::mc_inc_visited_states() const
 342 {
 343   mc_model_checker->visited_states++;
 344 }
 345
 346 void Api::mc_inc_executed_trans() const
 347 {
 348   mc_model_checker->executed_transitions++;
 349 }
 350
 351 unsigned long Api::mc_get_visited_states() const
 352 {
 353   return mc_model_checker->visited_states;
 354 }
 355
 356 unsigned long Api::mc_get_executed_trans() const
 357 {
 358   return mc_model_checker->executed_transitions;
 359 }
 360
 361 void Api::mc_check_deadlock() const
 362 {
 363   if (mc_model_checker->checkDeadlock()) {
 364     XBT_CINFO(mc_global, "**************************");
 365     XBT_CINFO(mc_global, "*** DEADLOCK DETECTED ***");
 366     XBT_CINFO(mc_global, "**************************");
 367     XBT_CINFO(mc_global, "Counter-example execution trace:");
 368     for (auto const& s : mc_model_checker->getChecker()->get_textual_trace())
 369       XBT_CINFO(mc_global, "  %s", s.c_str());
 370     simgrid::mc::dumpRecordPath();
 371     simgrid::mc::session_singleton->log_state();
 372     throw DeadlockError();
 373   }
 374 }
 375
 376 /** Get the issuer of a simcall (`req->issuer`)
 377  *
 378  *  In split-process mode, it does the black magic necessary to get an address
 379  *  of a (shallow) copy of the data structure the issuer SIMIX actor in the local
 380  *  address space.
 381  *
 382  *  @param process the MCed process
 383  *  @param req     the simcall (copied in the local process)
 384  */
 385 smx_actor_t Api::simcall_get_issuer(s_smx_simcall const* req) const
 386 {
 387   xbt_assert(mc_model_checker != nullptr);
 388
 389   // This is the address of the smx_actor in the MCed process:
 390   auto address = simgrid::mc::remote(req->issuer_);
 391
 392   // Lookup by address:
 393   for (auto& actor : mc_model_checker->get_remote_process().actors())
 394     if (actor.address == address)
 395       return actor.copy.get_buffer();
 396   for (auto& actor : mc_model_checker->get_remote_process().dead_actors())
 397     if (actor.address == address)
 398       return actor.copy.get_buffer();
 399
 400   xbt_die("Issuer not found");
 401 }
 402
 403 RemotePtr<kernel::activity::MailboxImpl> Api::get_mbox_remote_addr(smx_simcall_t const req) const
 404 {
 405   if (req->call_ == Simcall::COMM_ISEND)
 406     return remote(simcall_comm_isend__get__mbox(req));
 407   if (req->call_ == Simcall::COMM_IRECV)
 408     return remote(simcall_comm_irecv__get__mbox(req));
 409   THROW_IMPOSSIBLE;
 410 }
 411
 412 RemotePtr<kernel::activity::ActivityImpl> Api::get_comm_remote_addr(smx_simcall_t const req) const
 413 {
 414   if (req->call_ == Simcall::COMM_ISEND)
 415     return remote(simcall_comm_isend__getraw__result(req));
 416   if (req->call_ == Simcall::COMM_IRECV)
 417     return remote(simcall_comm_irecv__getraw__result(req));
 418   THROW_IMPOSSIBLE;
 419 }
 420
 421 void Api::handle_simcall(Transition const& transition) const
 422 {
 423   mc_model_checker->handle_simcall(transition);
 424 }
 425
 426 void Api::mc_wait_for_requests() const
 427 {
 428   mc_model_checker->wait_for_requests();
 429 }
 430
 431 void Api::mc_exit(int status) const
 432 {
 433   mc_model_checker->exit(status);
 434 }
 435
 436 void Api::dump_record_path() const
 437 {
 438   simgrid::mc::dumpRecordPath();
 439 }
 440
 441 smx_simcall_t Api::mc_state_choose_request(simgrid::mc::State* state) const
 442 {
 443   RemoteProcess& process = mc_model_checker->get_remote_process();
 444   XBT_DEBUG("Search for an actor to run. %zu actors to consider", process.actors().size());
 445   for (auto& actor : process.actors()) {
 446     /* Only consider the actors that were marked as interleaving by the checker algorithm */
 447     if (not state->actor_states_[actor.copy.get_buffer()->get_pid()].is_todo())
 448       continue;
 449
 450     smx_simcall_t res = MC_state_choose_request_for_process(process, state, actor.copy.get_buffer());
 451     if (res) {
 452       XBT_DEBUG("Let's run actor %ld, going for transition %s", actor.copy.get_buffer()->get_pid(),
 453                 SIMIX_simcall_name(*res));
 454       return res;
 455     }
 456   }
 457   return nullptr;
 458 }
 459
 460 std::list<transition_detail_t> Api::get_enabled_transitions(simgrid::mc::State* state) const
 461 {
 462   std::list<transition_detail_t> tr_list{};
 463
 464   for (auto& actor : mc_model_checker->get_remote_process().actors()) {
 465     auto actor_pid  = actor.copy.get_buffer()->get_pid();
 466     auto actor_impl = actor.copy.get_buffer();
 467
 468     // Only consider the actors that were marked as interleaving by the checker algorithm
 469     if (not state->actor_states_[actor_pid].is_todo())
 470       continue;
 471     // Not executable in the application
 472     if (not simgrid::mc::actor_is_enabled(actor_impl))
 473       continue;
 474
 475     auto transition       = std::make_unique<s_transition_detail>();
 476     Simcall simcall_call  = actor_impl->simcall_.call_;
 477     smx_simcall_t simcall = &actor_impl->simcall_;
 478     transition->call_     = simcall_call;
 479     switch (simcall_call) {
 480       case Simcall::COMM_ISEND:
 481       case Simcall::COMM_IRECV:
 482         transition->mbox_remote_addr = get_mbox_remote_addr(simcall);
 483         transition->comm_remote_addr = get_comm_remote_addr(simcall);
 484         break;
 485
 486       default:
 487         break;
 488     }
 489     tr_list.emplace_back(std::move(transition));
 490   }
 491
 492   return tr_list;
 493 }
 494
 495 std::string Api::request_to_string(smx_simcall_t req, int value) const
 496 {
 497   xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
 498
 499   smx_actor_t issuer = simcall_get_issuer(req);
 500
 501   if (issuer->simcall_.observer_ != nullptr)
 502     return mc_model_checker->simcall_to_string(issuer->get_pid(), value);
 503   else
 504     return "[" + get_actor_string(issuer) + "] " + SIMIX_simcall_name(*req) + "(unknown?)";
 505 }
 506
 507 std::string Api::request_get_dot_output(smx_simcall_t req, int value) const
 508 {
 509   if (req->observer_ != nullptr) {
 510     const smx_actor_t issuer = simcall_get_issuer(req);
 511     const char* color        = get_color(issuer->get_pid() - 1);
 512     return "label = \"" + mc_model_checker->simcall_dot_label(issuer->get_pid(), value) + "\", color = " + color +
 513            ", fontcolor = " + color;
 514   } else
 515     return "UNIMPLEMENTED";
 516 }
 517
 518 #if HAVE_SMPI
 519 int Api::get_smpi_request_tag(smx_simcall_t const& simcall, simgrid::simix::Simcall type) const
 520 {
 521   void* simcall_data = nullptr;
 522   if (type == Simcall::COMM_ISEND)
 523     simcall_data = simcall_comm_isend__get__data(simcall);
 524   else if (type == Simcall::COMM_IRECV)
 525     simcall_data = simcall_comm_irecv__get__data(simcall);
 526   Remote<simgrid::smpi::Request> mpi_request;
 527   mc_model_checker->get_remote_process().read(mpi_request, remote(static_cast<smpi::Request*>(simcall_data)));
 528   return mpi_request.get_buffer()->tag();
 529 }
 530 #endif
 531
 532 void Api::restore_state(std::shared_ptr<simgrid::mc::Snapshot> system_state) const
 533 {
 534   system_state->restore(&mc_model_checker->get_remote_process());
 535 }
 536
 537 void Api::log_state() const
 538 {
 539   session_singleton->log_state();
 540 }
 541
 542 bool Api::snapshot_equal(const Snapshot* s1, const Snapshot* s2) const
 543 {
 544   return simgrid::mc::snapshot_equal(s1, s2);
 545 }
 546
 547 simgrid::mc::Snapshot* Api::take_snapshot(int num_state) const
 548 {
 549   auto snapshot = new simgrid::mc::Snapshot(num_state);
 550   return snapshot;
 551 }
 552
 553 void Api::s_close() const
 554 {
 555   session_singleton->close();
 556 }
 557
 558 RemotePtr<simgrid::kernel::actor::SimcallObserver> Api::execute(Transition& transition, smx_simcall_t simcall) const
 559 {
 560   /* FIXME: once all simcalls have observers, kill the simcall parameter and use mc_model_checker->simcall_to_string() */
 561   transition.textual = request_to_string(simcall, transition.times_considered_);
 562   return session_singleton->execute(transition);
 563 }
 564
 565 void Api::automaton_load(const char* file) const
 566 {
 567   MC_automaton_load(file);
 568 }
 569
 570 std::vector<int> Api::automaton_propositional_symbol_evaluate() const
 571 {
 572   unsigned int cursor = 0;
 573   std::vector<int> values;
 574   xbt_automaton_propositional_symbol_t ps = nullptr;
 575   xbt_dynar_foreach (mc::property_automaton->propositional_symbols, cursor, ps)
 576     values.push_back(xbt_automaton_propositional_symbol_evaluate(ps));
 577   return values;
 578 }
 579
 580 std::vector<xbt_automaton_state_t> Api::get_automaton_state() const
 581 {
 582   std::vector<xbt_automaton_state_t> automaton_stack;
 583   unsigned int cursor = 0;
 584   xbt_automaton_state_t automaton_state;
 585   xbt_dynar_foreach (mc::property_automaton->states, cursor, automaton_state)
 586     if (automaton_state->type == -1)
 587       automaton_stack.push_back(automaton_state);
 588   return automaton_stack;
 589 }
 590
 591 int Api::compare_automaton_exp_label(const xbt_automaton_exp_label* l) const
 592 {
 593   unsigned int cursor                    = 0;
 594   xbt_automaton_propositional_symbol_t p = nullptr;
 595   xbt_dynar_foreach (simgrid::mc::property_automaton->propositional_symbols, cursor, p) {
 596     if (std::strcmp(xbt_automaton_propositional_symbol_get_name(p), l->u.predicat) == 0)
 597       return cursor;
 598   }
 599   return -1;
 600 }
 601
 602 void Api::set_property_automaton(xbt_automaton_state_t const& automaton_state) const
 603 {
 604   mc::property_automaton->current_state = automaton_state;
 605 }
 606
 607 xbt_automaton_exp_label_t Api::get_automaton_transition_label(xbt_dynar_t const& dynar, int index) const
 608 {
 609   const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
 610   return transition->label;
 611 }
 612
 613 xbt_automaton_state_t Api::get_automaton_transition_dst(xbt_dynar_t const& dynar, int index) const
 614 {
 615   const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
 616   return transition->dst;
 617 }
 618
 619 } // namespace mc
 620 } // namespace simgrid