src/mc/mc_api.cpp

   1 #include "mc_api.hpp"
   2
   3 #include "src/kernel/activity/MailboxImpl.hpp"
   4 #include "src/kernel/activity/MutexImpl.hpp"
   5 #include "src/mc/Session.hpp"
   6 #include "src/mc/mc_comm_pattern.hpp"
   7 #include "src/mc/mc_private.hpp"
   8 #include "src/mc/mc_smx.hpp"
   9 #include "src/mc/remote/RemoteSimulation.hpp"
  10 #include "src/mc/mc_pattern.hpp"
  11 #include "src/mc/checker/SimcallInspector.hpp"
  12 #include <xbt/asserts.h>
  13 #include <xbt/log.h>
  14 // #include <xbt/dynar.h>
  15
  16 #if HAVE_SMPI
  17 #include "src/smpi/include/smpi_request.hpp"
  18 #endif
  19
  20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_api, mc, "Logging specific to MC Fasade APIs ");
  21
  22 using Simcall = simgrid::simix::Simcall;
  23
  24 namespace simgrid {
  25 namespace mc {
  26
  27 static inline const char* get_color(int id)
  28 {
  29   static constexpr std::array<const char*, 13> colors{{"blue", "red", "green3", "goldenrod", "brown", "purple",
  30                                                        "magenta", "turquoise4", "gray25", "forestgreen", "hotpink",
  31                                                        "lightblue", "tan"}};
  32   return colors[id % colors.size()];
  33 }
  34
  35 static char *pointer_to_string(void *pointer)
  36 {
  37   if (XBT_LOG_ISENABLED(mc_api, xbt_log_priority_verbose))
  38     return bprintf("%p", pointer);
  39
  40   return xbt_strdup("(verbose only)");
  41 }
  42
  43 static char *buff_size_to_string(size_t buff_size)
  44 {
  45   if (XBT_LOG_ISENABLED(mc_api, xbt_log_priority_verbose))
  46     return bprintf("%zu", buff_size);
  47
  48   return xbt_strdup("(verbose only)");
  49 }
  50
  51 /* Search an enabled transition for the given process.
  52  *
  53  * This can be seen as an iterator returning the next transition of the process.
  54  *
  55  * We only consider the processes that are both
  56  *  - marked "to be interleaved" in their ActorState (controlled by the checker algorithm).
  57  *  - which simcall can currently be executed (like a comm where the other partner is already known)
  58  * Once we returned the last enabled transition of a process, it is marked done.
  59  *
  60  * Things can get muddled with the WAITANY and TESTANY simcalls, that are rewritten on the fly to a bunch of WAIT
  61  * (resp TEST) transitions using the transition.argument field to remember what was the last returned sub-transition.
  62  */
  63 static inline smx_simcall_t MC_state_choose_request_for_process(simgrid::mc::State* state, smx_actor_t actor)
  64 {
  65   /* reset the outgoing transition */
  66   simgrid::mc::ActorState* procstate = &state->actor_states_[actor->get_pid()];
  67   state->transition_.pid_            = -1;
  68   state->transition_.argument_       = -1;
  69   state->executed_req_.call_         =  Simcall::NONE;
  70
  71   if (not simgrid::mc::actor_is_enabled(actor))
  72     return nullptr; // Not executable in the application
  73
  74   smx_simcall_t req = nullptr;
  75   switch (actor->simcall_.call_) {
  76     case Simcall::COMM_WAITANY:
  77       state->transition_.argument_ = -1;
  78       while (procstate->times_considered < simcall_comm_waitany__get__count(&actor->simcall_)) {
  79         if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall_, procstate->times_considered)) {
  80           state->transition_.argument_ = procstate->times_considered;
  81           ++procstate->times_considered;
  82           break;
  83         }
  84         ++procstate->times_considered;
  85       }
  86
  87       if (procstate->times_considered >= simcall_comm_waitany__get__count(&actor->simcall_))
  88         procstate->set_done();
  89       if (state->transition_.argument_ != -1)
  90         req = &actor->simcall_;
  91       break;
  92
  93     case Simcall::COMM_TESTANY: {
  94       unsigned start_count         = procstate->times_considered;
  95       state->transition_.argument_ = -1;
  96       while (procstate->times_considered < simcall_comm_testany__get__count(&actor->simcall_)) {
  97         if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall_, procstate->times_considered)) {
  98           state->transition_.argument_ = procstate->times_considered;
  99           ++procstate->times_considered;
 100           break;
 101         }
 102         ++procstate->times_considered;
 103       }
 104
 105       if (procstate->times_considered >= simcall_comm_testany__get__count(&actor->simcall_))
 106         procstate->set_done();
 107
 108       if (state->transition_.argument_ != -1 || start_count == 0)
 109         req = &actor->simcall_;
 110
 111       break;
 112     }
 113
 114     case Simcall::COMM_WAIT: {
 115       simgrid::mc::RemotePtr<simgrid::kernel::activity::CommImpl> remote_act =
 116           remote(simcall_comm_wait__getraw__comm(&actor->simcall_));
 117       simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_act;
 118       mc_model_checker->get_remote_simulation().read(temp_act, remote_act);
 119       const simgrid::kernel::activity::CommImpl* act = temp_act.get_buffer();
 120       if (act->src_actor_.get() && act->dst_actor_.get())
 121         state->transition_.argument_ = 0; // OK
 122       else if (act->src_actor_.get() == nullptr && act->type_ == simgrid::kernel::activity::CommImpl::Type::READY &&
 123                act->detached())
 124         state->transition_.argument_ = 0; // OK
 125       else
 126         state->transition_.argument_ = -1; // timeout
 127       procstate->set_done();
 128       req = &actor->simcall_;
 129       break;
 130     }
 131
 132     case Simcall::MC_RANDOM: {
 133       int min_value                = simcall_mc_random__get__min(&actor->simcall_);
 134       state->transition_.argument_ = procstate->times_considered + min_value;
 135       procstate->times_considered++;
 136       if (state->transition_.argument_ == simcall_mc_random__get__max(&actor->simcall_))
 137         procstate->set_done();
 138       req = &actor->simcall_;
 139       break;
 140     }
 141
 142     default:
 143       procstate->set_done();
 144       state->transition_.argument_ = 0;
 145       req                          = &actor->simcall_;
 146       break;
 147   }
 148   if (not req)
 149     return nullptr;
 150
 151   state->transition_.pid_ = actor->get_pid();
 152   state->executed_req_    = *req;
 153   // Fetch the data of the request and translate it:
 154   state->internal_req_ = *req;
 155
 156   /* The waitany and testany request are transformed into a wait or test request over the corresponding communication
 157    * action so it can be treated later by the dependence function. */
 158   switch (req->call_) {
 159     case Simcall::COMM_WAITANY: {
 160       state->internal_req_.call_ = Simcall::COMM_WAIT;
 161       simgrid::kernel::activity::CommImpl* remote_comm;
 162       remote_comm = mc_model_checker->get_remote_simulation().read(
 163           remote(simcall_comm_waitany__get__comms(req) + state->transition_.argument_));
 164       mc_model_checker->get_remote_simulation().read(state->internal_comm_, remote(remote_comm));
 165       simcall_comm_wait__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 166       simcall_comm_wait__set__timeout(&state->internal_req_, 0);
 167       break;
 168     }
 169
 170     case Simcall::COMM_TESTANY:
 171       state->internal_req_.call_ = Simcall::COMM_TEST;
 172
 173       if (state->transition_.argument_ > 0) {
 174         simgrid::kernel::activity::CommImpl* remote_comm = mc_model_checker->get_remote_simulation().read(
 175             remote(simcall_comm_testany__get__comms(req) + state->transition_.argument_));
 176         mc_model_checker->get_remote_simulation().read(state->internal_comm_, remote(remote_comm));
 177       }
 178
 179       simcall_comm_test__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 180       simcall_comm_test__set__result(&state->internal_req_, state->transition_.argument_);
 181       break;
 182
 183     case Simcall::COMM_WAIT:
 184       mc_model_checker->get_remote_simulation().read_bytes(&state->internal_comm_, sizeof(state->internal_comm_),
 185                                                            remote(simcall_comm_wait__getraw__comm(req)));
 186       simcall_comm_wait__set__comm(&state->executed_req_, state->internal_comm_.get_buffer());
 187       simcall_comm_wait__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 188       break;
 189
 190     case Simcall::COMM_TEST:
 191       mc_model_checker->get_remote_simulation().read_bytes(&state->internal_comm_, sizeof(state->internal_comm_),
 192                                                            remote(simcall_comm_test__getraw__comm(req)));
 193       simcall_comm_test__set__comm(&state->executed_req_, state->internal_comm_.get_buffer());
 194       simcall_comm_test__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
 195       break;
 196
 197     default:
 198       /* No translation needed */
 199       break;
 200   }
 201
 202   return req;
 203 }
 204
 205 void mc_api::initialize(char** argv) const
 206 {
 207   simgrid::mc::session = new simgrid::mc::Session([argv] {
 208     int i = 1;
 209     while (argv[i] != nullptr && argv[i][0] == '-')
 210       i++;
 211     xbt_assert(argv[i] != nullptr,
 212                "Unable to find a binary to exec on the command line. Did you only pass config flags?");
 213     execvp(argv[i], argv + i);
 214     xbt_die("The model-checked process failed to exec(): %s", strerror(errno));
 215   });
 216 }
 217
 218 std::vector<simgrid::mc::ActorInformation>& mc_api::get_actors() const
 219 {
 220   return mc_model_checker->get_remote_simulation().actors();
 221 }
 222
 223 bool mc_api::actor_is_enabled(aid_t pid) const
 224 {
 225   return session->actor_is_enabled(pid);
 226 }
 227
 228 unsigned long mc_api::get_maxpid() const
 229 {
 230   return MC_smx_get_maxpid();
 231 }
 232
 233 int mc_api::get_actors_size() const
 234 {
 235   return mc_model_checker->get_remote_simulation().actors().size();
 236 }
 237
 238 bool mc_api::comm_addr_equal(const kernel::activity::CommImpl* comm_addr1, const kernel::activity::CommImpl* comm_addr2) const
 239 {
 240   return remote(comm_addr1) == remote(comm_addr2);
 241 }
 242
 243 kernel::activity::CommImpl* mc_api::get_comm_isend_raw_addr(smx_simcall_t request) const
 244 {
 245   auto comm_addr = simcall_comm_isend__getraw__result(request);
 246   return static_cast<kernel::activity::CommImpl*>(comm_addr);
 247 }
 248
 249 kernel::activity::CommImpl* mc_api::get_comm_wait_raw_addr(smx_simcall_t request) const
 250 {
 251   return simcall_comm_wait__getraw__comm(request);
 252 }
 253
 254 kernel::activity::CommImpl* mc_api::get_comm_waitany_raw_addr(smx_simcall_t request, int value) const
 255 {
 256   auto addr = mc_model_checker->get_remote_simulation().read(remote(simcall_comm_waitany__getraw__comms(request) + value));
 257   return static_cast<simgrid::kernel::activity::CommImpl*>(addr);
 258 }
 259
 260 std::string mc_api::get_pattern_comm_rdv(void* addr) const
 261 {
 262   Remote<kernel::activity::CommImpl> temp_synchro;
 263   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 264   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 265
 266   char* remote_name = mc_model_checker->get_remote_simulation().read<char*>(RemotePtr<char*>(
 267       (uint64_t)(synchro->get_mailbox() ? &synchro->get_mailbox()->get_name() : &synchro->mbox_cpy->get_name())));
 268   auto rdv = mc_model_checker->get_remote_simulation().read_string(RemotePtr<char>(remote_name));
 269   return rdv;
 270 }
 271
 272 unsigned long mc_api::get_pattern_comm_src_proc(void* addr) const
 273 {
 274   Remote<kernel::activity::CommImpl> temp_synchro;
 275   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 276   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 277   auto src_proc = mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->src_actor_.get()))->get_pid();
 278   return src_proc;
 279 }
 280
 281 unsigned long mc_api::get_pattern_comm_dst_proc(void* addr) const
 282 {
 283   Remote<kernel::activity::CommImpl> temp_synchro;
 284   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 285   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 286   auto src_proc = mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(synchro->dst_actor_.get()))->get_pid();
 287   return src_proc;
 288 }
 289
 290 std::vector<char> mc_api::get_pattern_comm_data(void* addr) const
 291 {
 292   Remote<kernel::activity::CommImpl> temp_synchro;
 293   mc_model_checker->get_remote_simulation().read(temp_synchro, remote((simgrid::kernel::activity::CommImpl*)addr));
 294   const kernel::activity::CommImpl* synchro = temp_synchro.get_buffer();
 295
 296   std::vector<char> buffer {};
 297   if (synchro->src_buff_ != nullptr) {
 298     buffer.resize(synchro->src_buff_size_);
 299     mc_model_checker->get_remote_simulation().read_bytes(buffer.data(), buffer.size(),
 300                                                          remote(synchro->src_buff_));
 301   }
 302   return buffer;
 303 }
 304
 305 std::vector<char> mc_api::get_pattern_comm_data(const kernel::activity::CommImpl* comm_addr) const
 306 {
 307   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 308   mc_model_checker->get_remote_simulation().read(temp_comm, remote((kernel::activity::CommImpl*)comm_addr));
 309   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 310
 311   std::vector<char> buffer {};
 312   if (comm->src_buff_ != nullptr) {
 313     buffer.resize(comm->src_buff_size_);
 314     mc_model_checker->get_remote_simulation().read_bytes(buffer.data(), buffer.size(),
 315                                                          remote(comm->src_buff_));
 316   }
 317   return buffer;
 318 }
 319
 320 const char* mc_api::get_actor_host_name(smx_actor_t actor) const
 321 {
 322   const char* host_name = MC_smx_actor_get_host_name(actor);
 323   return host_name;
 324 }
 325
 326 #if HAVE_SMPI
 327 bool mc_api::check_send_request_detached(smx_simcall_t const& simcall) const
 328 {
 329   simgrid::smpi::Request mpi_request;
 330   mc_model_checker->get_remote_simulation().read(
 331       &mpi_request, remote(static_cast<smpi::Request*>(simcall_comm_isend__get__data(simcall))));
 332   return mpi_request.detached();
 333 }
 334 #endif
 335
 336 smx_actor_t mc_api::get_src_actor(const kernel::activity::CommImpl* comm_addr) const
 337 {
 338   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 339   mc_model_checker->get_remote_simulation().read(temp_comm, remote((kernel::activity::CommImpl*)comm_addr));
 340   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 341
 342   auto src_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->src_actor_.get()));
 343   return src_proc;
 344 }
 345
 346 smx_actor_t mc_api::get_dst_actor(const kernel::activity::CommImpl* comm_addr) const
 347 {
 348   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 349   mc_model_checker->get_remote_simulation().read(temp_comm, remote((kernel::activity::CommImpl*)comm_addr));
 350   const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 351
 352   auto dst_proc = mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(comm->dst_actor_.get()));
 353   return dst_proc;
 354 }
 355
 356 std::size_t mc_api::get_remote_heap_bytes() const
 357 {
 358   RemoteSimulation& process = mc_model_checker->get_remote_simulation();
 359   auto heap_bytes_used      = mmalloc_get_bytes_used_remote(process.get_heap()->heaplimit, process.get_malloc_info());
 360   return heap_bytes_used;
 361 }
 362
 363 void mc_api::session_initialize() const
 364 {
 365   session->initialize();
 366 }
 367
 368 ModelChecker* mc_api::get_model_checker() const
 369 {
 370   return mc_model_checker;
 371 }
 372
 373 void mc_api::mc_inc_visited_states() const
 374 {
 375   mc_model_checker->visited_states++;
 376 }
 377
 378 void mc_api::mc_inc_executed_trans() const
 379 {
 380   mc_model_checker->executed_transitions++;
 381 }
 382
 383 unsigned long mc_api::mc_get_visited_states() const
 384 {
 385   return mc_model_checker->visited_states;
 386 }
 387
 388 unsigned long mc_api::mc_get_executed_trans() const
 389 {
 390   return mc_model_checker->executed_transitions;
 391 }
 392
 393 bool mc_api::mc_check_deadlock() const
 394 {
 395   return mc_model_checker->checkDeadlock();
 396 }
 397
 398 void mc_api::mc_show_deadlock() const
 399 {
 400   MC_show_deadlock();
 401 }
 402
 403 smx_actor_t mc_api::simcall_get_issuer(s_smx_simcall const* req) const
 404 {
 405   return MC_smx_simcall_get_issuer(req);
 406 }
 407
 408 bool mc_api::mc_is_null() const
 409 {
 410   auto is_null = (mc_model_checker == nullptr) ? true : false;
 411   return is_null;
 412 }
 413
 414 Checker* mc_api::mc_get_checker() const
 415 {
 416   return mc_model_checker->getChecker();
 417 }
 418
 419 void mc_api::set_checker(Checker* const checker) const
 420 {
 421   xbt_assert(mc_model_checker);
 422   xbt_assert(mc_model_checker->getChecker() == nullptr);
 423   mc_model_checker->setChecker(checker);
 424 }
 425
 426 RemoteSimulation& mc_api::mc_get_remote_simulation() const
 427 {
 428   return mc_model_checker->get_remote_simulation();
 429 }
 430
 431 void mc_api::handle_simcall(Transition const& transition) const
 432 {
 433   mc_model_checker->handle_simcall(transition);
 434 }
 435
 436 void mc_api::mc_wait_for_requests() const
 437 {
 438   mc_model_checker->wait_for_requests();
 439 }
 440
 441 void mc_api::mc_exit(int status) const
 442 {
 443   mc_model_checker->exit(status);
 444 }
 445
 446 std::string const& mc_api::mc_get_host_name(std::string const& hostname) const
 447 {
 448   return mc_model_checker->get_host_name(hostname);
 449 }
 450
 451 void mc_api::dump_record_path() const
 452 {
 453   simgrid::mc::dumpRecordPath();
 454 }
 455
 456 smx_simcall_t mc_api::mc_state_choose_request(simgrid::mc::State* state) const
 457 {
 458   for (auto& actor : mc_model_checker->get_remote_simulation().actors()) {
 459     /* Only consider the actors that were marked as interleaving by the checker algorithm */
 460     if (not state->actor_states_[actor.copy.get_buffer()->get_pid()].is_todo())
 461       continue;
 462
 463     smx_simcall_t res = MC_state_choose_request_for_process(state, actor.copy.get_buffer());
 464     if (res)
 465       return res;
 466   }
 467   return nullptr;
 468 }
 469
 470 bool mc_api::request_depend(smx_simcall_t req1, smx_simcall_t req2) const
 471 {
 472   return simgrid::mc::request_depend(req1, req2);
 473 }
 474
 475 std::string mc_api::request_to_string(smx_simcall_t req, int value, RequestType request_type) const
 476 {
 477   xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
 478
 479   if (req->inspector_ != nullptr)
 480     return req->inspector_->to_string();
 481
 482   bool use_remote_comm = true;
 483   switch(request_type) {
 484   case simgrid::mc::RequestType::simix:
 485     use_remote_comm = true;
 486     break;
 487   case simgrid::mc::RequestType::executed:
 488   case simgrid::mc::RequestType::internal:
 489     use_remote_comm = false;
 490     break;
 491   default:
 492     THROW_IMPOSSIBLE;
 493   }
 494
 495   const char* type = nullptr;
 496   char *args = nullptr;
 497
 498   smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 499
 500   switch (req->call_) {
 501     case Simcall::COMM_ISEND: {
 502       type     = "iSend";
 503       char* p  = pointer_to_string(simcall_comm_isend__get__src_buff(req));
 504       char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
 505       if (issuer->get_host())
 506         args = bprintf("src=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 507                        MC_smx_actor_get_name(issuer), p, bs);
 508       else
 509         args = bprintf("src=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
 510       xbt_free(bs);
 511       xbt_free(p);
 512       break;
 513     }
 514
 515     case Simcall::COMM_IRECV: {
 516       size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
 517       size_t size         = 0;
 518       if (remote_size)
 519         mc_model_checker->get_remote_simulation().read_bytes(&size, sizeof(size), remote(remote_size));
 520
 521       type     = "iRecv";
 522       char* p  = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
 523       char* bs = buff_size_to_string(size);
 524       if (issuer->get_host())
 525         args = bprintf("dst=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 526                        MC_smx_actor_get_name(issuer), p, bs);
 527       else
 528         args = bprintf("dst=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
 529       xbt_free(bs);
 530       xbt_free(p);
 531       break;
 532     }
 533
 534     case Simcall::COMM_WAIT: {
 535       simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 536       char* p;
 537       if (value == -1) {
 538         type = "WaitTimeout";
 539         p    = pointer_to_string(remote_act);
 540         args = bprintf("comm=%s", p);
 541       } else {
 542         type = "Wait";
 543         p    = pointer_to_string(remote_act);
 544
 545         simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 546         const simgrid::kernel::activity::CommImpl* act;
 547         if (use_remote_comm) {
 548           mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 549           act = temp_synchro.get_buffer();
 550         } else
 551           act = remote_act;
 552
 553         smx_actor_t src_proc =
 554             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 555         smx_actor_t dst_proc =
 556             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 557         args                 = bprintf("comm=%s [(%ld)%s (%s)-> (%ld)%s (%s)]", p, src_proc ? src_proc->get_pid() : 0,
 558                        src_proc ? MC_smx_actor_get_host_name(src_proc) : "",
 559                        src_proc ? MC_smx_actor_get_name(src_proc) : "", dst_proc ? dst_proc->get_pid() : 0,
 560                        dst_proc ? MC_smx_actor_get_host_name(dst_proc) : "",
 561                        dst_proc ? MC_smx_actor_get_name(dst_proc) : "");
 562       }
 563       xbt_free(p);
 564       break;
 565     }
 566
 567     case Simcall::COMM_TEST: {
 568       simgrid::kernel::activity::CommImpl* remote_act = simcall_comm_test__getraw__comm(req);
 569       simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 570       const simgrid::kernel::activity::CommImpl* act;
 571       if (use_remote_comm) {
 572         mc_model_checker->get_remote_simulation().read(temp_synchro, remote(remote_act));
 573         act = temp_synchro.get_buffer();
 574       } else
 575         act = remote_act;
 576
 577       char* p;
 578       if (act->src_actor_.get() == nullptr || act->dst_actor_.get() == nullptr) {
 579         type = "Test FALSE";
 580         p    = pointer_to_string(remote_act);
 581         args = bprintf("comm=%s", p);
 582       } else {
 583         type = "Test TRUE";
 584         p    = pointer_to_string(remote_act);
 585
 586         smx_actor_t src_proc =
 587             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 588         smx_actor_t dst_proc =
 589             mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 590         args                 = bprintf("comm=%s [(%ld)%s (%s) -> (%ld)%s (%s)]", p, src_proc->get_pid(),
 591                        MC_smx_actor_get_name(src_proc), MC_smx_actor_get_host_name(src_proc), dst_proc->get_pid(),
 592                        MC_smx_actor_get_name(dst_proc), MC_smx_actor_get_host_name(dst_proc));
 593       }
 594       xbt_free(p);
 595       break;
 596     }
 597
 598     case Simcall::COMM_WAITANY: {
 599       type         = "WaitAny";
 600       size_t count = simcall_comm_waitany__get__count(req);
 601       if (count > 0) {
 602         simgrid::kernel::activity::CommImpl* remote_sync;
 603         remote_sync =
 604             mc_model_checker->get_remote_simulation().read(remote(simcall_comm_waitany__get__comms(req) + value));
 605         char* p     = pointer_to_string(remote_sync);
 606         args        = bprintf("comm=%s (%d of %zu)", p, value + 1, count);
 607         xbt_free(p);
 608       } else
 609         args = bprintf("comm at idx %d", value);
 610       break;
 611     }
 612
 613     case Simcall::COMM_TESTANY:
 614       if (value == -1) {
 615         type = "TestAny FALSE";
 616         args = xbt_strdup("-");
 617       } else {
 618         type = "TestAny";
 619         args = bprintf("(%d of %zu)", value + 1, simcall_comm_testany__get__count(req));
 620       }
 621       break;
 622
 623     case Simcall::MUTEX_TRYLOCK:
 624     case Simcall::MUTEX_LOCK: {
 625       if (req->call_ == Simcall::MUTEX_LOCK)
 626         type = "Mutex LOCK";
 627       else
 628         type = "Mutex TRYLOCK";
 629
 630       simgrid::mc::Remote<simgrid::kernel::activity::MutexImpl> mutex;
 631       mc_model_checker->get_remote_simulation().read_bytes(mutex.get_buffer(), sizeof(mutex),
 632                                                            remote(req->call_ == Simcall::MUTEX_LOCK
 633                                                                       ? simcall_mutex_lock__get__mutex(req)
 634                                                                       : simcall_mutex_trylock__get__mutex(req)));
 635       args = bprintf("locked = %d, owner = %d, sleeping = n/a", mutex.get_buffer()->is_locked(),
 636                      mutex.get_buffer()->get_owner() != nullptr
 637                          ? (int)mc_model_checker->get_remote_simulation()
 638                                .resolve_actor(simgrid::mc::remote(mutex.get_buffer()->get_owner()))
 639                                ->get_pid()
 640                          : -1);
 641       break;
 642     }
 643
 644     case Simcall::MC_RANDOM:
 645       type = "MC_RANDOM";
 646       args = bprintf("%d", value);
 647       break;
 648
 649     default:
 650       type = SIMIX_simcall_name(req->call_);
 651       args = bprintf("??");
 652       break;
 653   }
 654
 655   std::string str;
 656   if (args != nullptr)
 657     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s(%s)", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 658                                       MC_smx_actor_get_name(issuer), type, args);
 659   else
 660     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s ", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 661                                       MC_smx_actor_get_name(issuer), type);
 662   xbt_free(args);
 663   return str;
 664 }
 665
 666 std::string mc_api::request_get_dot_output(smx_simcall_t req, int value) const
 667 {
 668   const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 669   const char* color        = get_color(issuer->get_pid() - 1);
 670
 671   if (req->inspector_ != nullptr)
 672     return simgrid::xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s",
 673                                        req->inspector_->dot_label().c_str(), color, color);
 674
 675   std::string label;
 676
 677   switch (req->call_) {
 678     case Simcall::COMM_ISEND:
 679       if (issuer->get_host())
 680         label = xbt::string_printf("[(%ld)%s] iSend", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 681       else
 682         label = bprintf("[(%ld)] iSend", issuer->get_pid());
 683       break;
 684
 685     case Simcall::COMM_IRECV:
 686       if (issuer->get_host())
 687         label = xbt::string_printf("[(%ld)%s] iRecv", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 688       else
 689         label = xbt::string_printf("[(%ld)] iRecv", issuer->get_pid());
 690       break;
 691
 692     case Simcall::COMM_WAIT:
 693       if (value == -1) {
 694         if (issuer->get_host())
 695           label = xbt::string_printf("[(%ld)%s] WaitTimeout", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 696         else
 697           label = xbt::string_printf("[(%ld)] WaitTimeout", issuer->get_pid());
 698       } else {
 699         kernel::activity::ActivityImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 700         Remote<kernel::activity::CommImpl> temp_comm;
 701         mc_model_checker->get_remote_simulation().read(temp_comm,
 702                                                        remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 703         const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 704
 705         const kernel::actor::ActorImpl* src_proc =
 706             mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->src_actor_.get()));
 707         const kernel::actor::ActorImpl* dst_proc =
 708             mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->dst_actor_.get()));
 709         if (issuer->get_host())
 710           label =
 711               xbt::string_printf("[(%ld)%s] Wait [(%ld)->(%ld)]", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 712                                  src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 713         else
 714           label = xbt::string_printf("[(%ld)] Wait [(%ld)->(%ld)]", issuer->get_pid(),
 715                                      src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 716       }
 717       break;
 718
 719     case Simcall::COMM_TEST: {
 720       kernel::activity::ActivityImpl* remote_act = simcall_comm_test__getraw__comm(req);
 721       Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 722       mc_model_checker->get_remote_simulation().read(temp_comm,
 723                                                      remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
 724       const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 725       if (comm->src_actor_.get() == nullptr || comm->dst_actor_.get() == nullptr) {
 726         if (issuer->get_host())
 727           label = xbt::string_printf("[(%ld)%s] Test FALSE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 728         else
 729           label = bprintf("[(%ld)] Test FALSE", issuer->get_pid());
 730       } else {
 731         if (issuer->get_host())
 732           label = xbt::string_printf("[(%ld)%s] Test TRUE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 733         else
 734           label = xbt::string_printf("[(%ld)] Test TRUE", issuer->get_pid());
 735       }
 736       break;
 737     }
 738
 739     case Simcall::COMM_WAITANY: {
 740       size_t comms_size = simcall_comm_waitany__get__count(req);
 741       if (issuer->get_host())
 742         label = xbt::string_printf("[(%ld)%s] WaitAny [%d of %zu]", issuer->get_pid(),
 743                                    MC_smx_actor_get_host_name(issuer), value + 1, comms_size);
 744       else
 745         label = xbt::string_printf("[(%ld)] WaitAny [%d of %zu]", issuer->get_pid(), value + 1, comms_size);
 746       break;
 747     }
 748
 749     case Simcall::COMM_TESTANY:
 750       if (value == -1) {
 751         if (issuer->get_host())
 752           label = xbt::string_printf("[(%ld)%s] TestAny FALSE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 753         else
 754           label = xbt::string_printf("[(%ld)] TestAny FALSE", issuer->get_pid());
 755       } else {
 756         if (issuer->get_host())
 757           label =
 758               xbt::string_printf("[(%ld)%s] TestAny TRUE [%d of %lu]", issuer->get_pid(),
 759                                  MC_smx_actor_get_host_name(issuer), value + 1, simcall_comm_testany__get__count(req));
 760         else
 761           label = xbt::string_printf("[(%ld)] TestAny TRUE [%d of %lu]", issuer->get_pid(), value + 1,
 762                                      simcall_comm_testany__get__count(req));
 763       }
 764       break;
 765
 766     case Simcall::MUTEX_TRYLOCK:
 767       label = xbt::string_printf("[(%ld)] Mutex TRYLOCK", issuer->get_pid());
 768       break;
 769
 770     case Simcall::MUTEX_LOCK:
 771       label = xbt::string_printf("[(%ld)] Mutex LOCK", issuer->get_pid());
 772       break;
 773
 774     case Simcall::MC_RANDOM:
 775       if (issuer->get_host())
 776         label = xbt::string_printf("[(%ld)%s] MC_RANDOM (%d)", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 777                                    value);
 778       else
 779         label = xbt::string_printf("[(%ld)] MC_RANDOM (%d)", issuer->get_pid(), value);
 780       break;
 781
 782     default:
 783       THROW_UNIMPLEMENTED;
 784   }
 785
 786   return xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s", label.c_str(), color, color);
 787 }
 788
 789 const char* mc_api::simcall_get_name(simgrid::simix::Simcall kind) const
 790 {
 791   return SIMIX_simcall_name(kind);
 792 }
 793
 794 #if HAVE_SMPI
 795 int mc_api::get_smpi_request_tag(smx_simcall_t const& simcall, simgrid::simix::Simcall type) const
 796 {
 797   simgrid::smpi::Request mpi_request;
 798   void* simcall_data = nullptr;
 799   if (type == Simcall::COMM_ISEND)
 800     simcall_data = simcall_comm_isend__get__data(simcall);
 801   else if (type == Simcall::COMM_IRECV)
 802     simcall_data = simcall_comm_irecv__get__data(simcall);
 803   mc_model_checker->get_remote_simulation().read(&mpi_request, remote(static_cast<smpi::Request*>(simcall_data)));
 804   return mpi_request.tag();
 805 }
 806 #endif
 807
 808 void mc_api::restore_state(std::shared_ptr<simgrid::mc::Snapshot> system_state) const
 809 {
 810   system_state->restore(&mc_model_checker->get_remote_simulation());
 811 }
 812
 813 void mc_api::log_state() const
 814 {
 815   session->log_state();
 816 }
 817
 818 bool mc_api::snapshot_equal(const Snapshot* s1, const Snapshot* s2) const
 819 {
 820   return simgrid::mc::snapshot_equal(s1, s2);
 821 }
 822
 823 simgrid::mc::Snapshot* mc_api::take_snapshot(int num_state) const
 824 {
 825   auto snapshot = new simgrid::mc::Snapshot(num_state);
 826   return snapshot;
 827 }
 828
 829 void mc_api::s_close() const
 830 {
 831   session->close();
 832 }
 833
 834 void mc_api::restore_initial_state() const
 835 {
 836   session->restore_initial_state();
 837 }
 838
 839 void mc_api::execute(Transition const& transition) const
 840 {
 841   session->execute(transition);
 842 }
 843
 844 #if SIMGRID_HAVE_MC
 845 void mc_api::automaton_load(const char *file) const
 846 {
 847   MC_automaton_load(file);
 848 }
 849 #endif
 850
 851 std::vector<int> mc_api::automaton_propositional_symbol_evaluate() const
 852 {
 853   unsigned int cursor = 0;
 854   std::vector<int> values;
 855   xbt_automaton_propositional_symbol_t ps = nullptr;
 856   xbt_dynar_foreach (mc::property_automaton->propositional_symbols, cursor, ps)
 857     values.push_back(xbt_automaton_propositional_symbol_evaluate(ps));
 858   return values;
 859 }
 860
 861 std::vector<xbt_automaton_state_t> mc_api::get_automaton_state() const
 862 {
 863   std::vector<xbt_automaton_state_t> automaton_stack;
 864   unsigned int cursor = 0;
 865   xbt_automaton_state_t automaton_state;
 866   xbt_dynar_foreach (mc::property_automaton->states, cursor, automaton_state)
 867     if (automaton_state->type == -1)
 868       automaton_stack.push_back(automaton_state);
 869   return automaton_stack;
 870 }
 871
 872 int mc_api::compare_automaton_exp_label(const xbt_automaton_exp_label* l) const
 873 {
 874   unsigned int cursor = 0;
 875   xbt_automaton_propositional_symbol_t p = nullptr;
 876   xbt_dynar_foreach (simgrid::mc::property_automaton->propositional_symbols, cursor, p) {
 877     if (std::strcmp(xbt_automaton_propositional_symbol_get_name(p), l->u.predicat) == 0)
 878       return cursor;
 879   }
 880   return -1;
 881 }
 882
 883 void mc_api::set_property_automaton(xbt_automaton_state_t const& automaton_state) const
 884 {
 885   mc::property_automaton->current_state = automaton_state;
 886 }
 887
 888 xbt_automaton_exp_label_t mc_api::get_automaton_transition_label(xbt_dynar_t const& dynar, int index) const
 889 {
 890   const xbt_automaton_transition* transition =
 891       xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
 892   return transition->label;
 893 }
 894
 895 xbt_automaton_state_t mc_api::get_automaton_transition_dst(xbt_dynar_t const& dynar, int index) const
 896 {
 897   const xbt_automaton_transition* transition =
 898       xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
 899   return transition->dst;
 900 }
 901
 902 } // namespace mc
 903 } // namespace simgrid