src/mc/mc_request.cpp

   1 /* Copyright (c) 2008-2019. 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 "src/mc/mc_request.hpp"
   7 #include "src/include/mc/mc.h"
   8 #include "src/kernel/activity/CommImpl.hpp"
   9 #include "src/kernel/activity/MutexImpl.hpp"
  10 #include "src/mc/ModelChecker.hpp"
  11 #include "src/mc/checker/SimcallInspector.hpp"
  12 #include "src/mc/mc_smx.hpp"
  13
  14 using simgrid::mc::remote;
  15
  16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_request, mc,
  17                                 "Logging specific to MC (request)");
  18
  19 static char *pointer_to_string(void *pointer);
  20 static char *buff_size_to_string(size_t size);
  21
  22 static inline simgrid::kernel::activity::CommImpl* MC_get_comm(smx_simcall_t r)
  23 {
  24   switch (r->call_) {
  25     case SIMCALL_COMM_WAIT:
  26       return static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(r));
  27     case SIMCALL_COMM_TEST:
  28       return static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_test__getraw__comm(r));
  29     default:
  30       return nullptr;
  31   }
  32 }
  33
  34 static inline
  35 smx_mailbox_t MC_get_mbox(smx_simcall_t r)
  36 {
  37   switch (r->call_) {
  38     case SIMCALL_COMM_ISEND:
  39       return simcall_comm_isend__get__mbox(r);
  40     case SIMCALL_COMM_IRECV:
  41       return simcall_comm_irecv__get__mbox(r);
  42     default:
  43       return nullptr;
  44   }
  45 }
  46
  47 namespace simgrid {
  48 namespace mc {
  49
  50 // Does half the job
  51 static inline
  52 bool request_depend_asymmetric(smx_simcall_t r1, smx_simcall_t r2)
  53 {
  54   if (r1->call_ == SIMCALL_COMM_ISEND && r2->call_ == SIMCALL_COMM_IRECV)
  55     return false;
  56
  57   if (r1->call_ == SIMCALL_COMM_IRECV && r2->call_ == SIMCALL_COMM_ISEND)
  58     return false;
  59
  60   // Those are internal requests, we do not need indirection
  61   // because those objects are copies:
  62   simgrid::kernel::activity::CommImpl* synchro1 = MC_get_comm(r1);
  63   simgrid::kernel::activity::CommImpl* synchro2 = MC_get_comm(r2);
  64
  65   if ((r1->call_ == SIMCALL_COMM_ISEND || r1->call_ == SIMCALL_COMM_IRECV) && r2->call_ == SIMCALL_COMM_WAIT) {
  66
  67     smx_mailbox_t mbox = MC_get_mbox(r1);
  68
  69     if (mbox != synchro2->mbox_cpy
  70         && simcall_comm_wait__get__timeout(r2) <= 0)
  71       return false;
  72
  73     if ((r1->issuer_ != synchro2->src_actor_.get()) && (r1->issuer_ != synchro2->dst_actor_.get()) &&
  74         simcall_comm_wait__get__timeout(r2) <= 0)
  75       return false;
  76
  77     if ((r1->call_ == SIMCALL_COMM_ISEND) && (synchro2->type_ == kernel::activity::CommImpl::Type::SEND) &&
  78         (synchro2->src_buff_ != simcall_comm_isend__get__src_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
  79       return false;
  80
  81     if ((r1->call_ == SIMCALL_COMM_IRECV) && (synchro2->type_ == kernel::activity::CommImpl::Type::RECEIVE) &&
  82         (synchro2->dst_buff_ != simcall_comm_irecv__get__dst_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
  83       return false;
  84   }
  85
  86   /* FIXME: the following rule assumes that the result of the
  87    * isend/irecv call is not stored in a buffer used in the
  88    * test call. */
  89 #if 0
  90   if((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
  91      &&  r2->call == SIMCALL_COMM_TEST)
  92      return false;
  93 #endif
  94
  95   if (r1->call_ == SIMCALL_COMM_WAIT && (r2->call_ == SIMCALL_COMM_WAIT || r2->call_ == SIMCALL_COMM_TEST) &&
  96       (synchro1->src_actor_.get() == nullptr || synchro1->dst_actor_.get() == nullptr))
  97     return false;
  98
  99   if (r1->call_ == SIMCALL_COMM_TEST &&
 100       (simcall_comm_test__get__comm(r1) == nullptr || synchro1->src_buff_ == nullptr || synchro1->dst_buff_ == nullptr))
 101     return false;
 102
 103   if (r1->call_ == SIMCALL_COMM_TEST && r2->call_ == SIMCALL_COMM_WAIT && synchro1->src_buff_ == synchro2->src_buff_ &&
 104       synchro1->dst_buff_ == synchro2->dst_buff_)
 105     return false;
 106
 107   if (r1->call_ == SIMCALL_COMM_WAIT && r2->call_ == SIMCALL_COMM_TEST && synchro1->src_buff_ != nullptr &&
 108       synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr && synchro2->dst_buff_ != nullptr &&
 109       synchro1->dst_buff_ != synchro2->src_buff_ && synchro1->dst_buff_ != synchro2->dst_buff_ &&
 110       synchro2->dst_buff_ != synchro1->src_buff_)
 111     return false;
 112
 113   return true;
 114 }
 115
 116 // Those are internal_req
 117 bool request_depend(smx_simcall_t req1, smx_simcall_t req2)
 118 {
 119   if (req1->issuer_ == req2->issuer_)
 120     return false;
 121
 122   /* Wait with timeout transitions are not considered by the independence theorem, thus we consider them as dependent with all other transitions */
 123   if ((req1->call_ == SIMCALL_COMM_WAIT && simcall_comm_wait__get__timeout(req1) > 0) ||
 124       (req2->call_ == SIMCALL_COMM_WAIT && simcall_comm_wait__get__timeout(req2) > 0))
 125     return true;
 126
 127   if (req1->call_ != req2->call_)
 128     return request_depend_asymmetric(req1, req2) && request_depend_asymmetric(req2, req1);
 129
 130   // Those are internal requests, we do not need indirection
 131   // because those objects are copies:
 132   simgrid::kernel::activity::CommImpl* synchro1 = MC_get_comm(req1);
 133   simgrid::kernel::activity::CommImpl* synchro2 = MC_get_comm(req2);
 134
 135   switch (req1->call_) {
 136     case SIMCALL_COMM_ISEND:
 137       return simcall_comm_isend__get__mbox(req1) == simcall_comm_isend__get__mbox(req2);
 138     case SIMCALL_COMM_IRECV:
 139       return simcall_comm_irecv__get__mbox(req1) == simcall_comm_irecv__get__mbox(req2);
 140     case SIMCALL_COMM_WAIT:
 141       if (synchro1->src_buff_ == synchro2->src_buff_ && synchro1->dst_buff_ == synchro2->dst_buff_)
 142         return false;
 143       if (synchro1->src_buff_ != nullptr && synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr &&
 144           synchro2->dst_buff_ != nullptr && synchro1->dst_buff_ != synchro2->src_buff_ &&
 145           synchro1->dst_buff_ != synchro2->dst_buff_ && synchro2->dst_buff_ != synchro1->src_buff_)
 146         return false;
 147       return true;
 148     default:
 149       return true;
 150   }
 151 }
 152
 153 }
 154 }
 155
 156 static char *pointer_to_string(void *pointer)
 157 {
 158
 159   if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
 160     return bprintf("%p", pointer);
 161
 162   return xbt_strdup("(verbose only)");
 163 }
 164
 165 static char *buff_size_to_string(size_t buff_size)
 166 {
 167
 168   if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
 169     return bprintf("%zu", buff_size);
 170
 171   return xbt_strdup("(verbose only)");
 172 }
 173
 174
 175 std::string simgrid::mc::request_to_string(smx_simcall_t req, int value, simgrid::mc::RequestType request_type)
 176 {
 177   xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
 178
 179   if (req->inspector_ != nullptr)
 180     return req->inspector_->to_string();
 181
 182   bool use_remote_comm = true;
 183   switch(request_type) {
 184   case simgrid::mc::RequestType::simix:
 185     use_remote_comm = true;
 186     break;
 187   case simgrid::mc::RequestType::executed:
 188   case simgrid::mc::RequestType::internal:
 189     use_remote_comm = false;
 190     break;
 191   default:
 192     THROW_IMPOSSIBLE;
 193   }
 194
 195   const char* type = nullptr;
 196   char *args = nullptr;
 197
 198   smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 199
 200   switch (req->call_) {
 201
 202     case SIMCALL_COMM_ISEND: {
 203       type     = "iSend";
 204       char* p  = pointer_to_string(simcall_comm_isend__get__src_buff(req));
 205       char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
 206       if (issuer->get_host())
 207         args = bprintf("src=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 208                        MC_smx_actor_get_name(issuer), p, bs);
 209       else
 210         args = bprintf("src=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
 211       xbt_free(bs);
 212       xbt_free(p);
 213       break;
 214     }
 215
 216     case SIMCALL_COMM_IRECV: {
 217       size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
 218       size_t size         = 0;
 219       if (remote_size)
 220         mc_model_checker->process().read_bytes(&size, sizeof(size), remote(remote_size));
 221
 222       type     = "iRecv";
 223       char* p  = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
 224       char* bs = buff_size_to_string(size);
 225       if (issuer->get_host())
 226         args = bprintf("dst=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 227                        MC_smx_actor_get_name(issuer), p, bs);
 228       else
 229         args = bprintf("dst=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
 230       xbt_free(bs);
 231       xbt_free(p);
 232       break;
 233     }
 234
 235     case SIMCALL_COMM_WAIT: {
 236       simgrid::kernel::activity::CommImpl* remote_act =
 237           static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(req));
 238       char* p;
 239       if (value == -1) {
 240         type = "WaitTimeout";
 241         p    = pointer_to_string(remote_act);
 242         args = bprintf("comm=%s", p);
 243       } else {
 244         type = "Wait";
 245         p    = pointer_to_string(remote_act);
 246
 247         simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 248         simgrid::kernel::activity::CommImpl* act;
 249         if (use_remote_comm) {
 250           mc_model_checker->process().read(temp_synchro,
 251                                            remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
 252           act = temp_synchro.get_buffer();
 253         } else
 254           act = remote_act;
 255
 256         smx_actor_t src_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 257         smx_actor_t dst_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 258         args                 = bprintf("comm=%s [(%ld)%s (%s)-> (%ld)%s (%s)]", p, src_proc ? src_proc->get_pid() : 0,
 259                        src_proc ? MC_smx_actor_get_host_name(src_proc) : "",
 260                        src_proc ? MC_smx_actor_get_name(src_proc) : "", dst_proc ? dst_proc->get_pid() : 0,
 261                        dst_proc ? MC_smx_actor_get_host_name(dst_proc) : "",
 262                        dst_proc ? MC_smx_actor_get_name(dst_proc) : "");
 263       }
 264       xbt_free(p);
 265       break;
 266     }
 267
 268     case SIMCALL_COMM_TEST: {
 269       simgrid::kernel::activity::CommImpl* remote_act =
 270           static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_test__getraw__comm(req));
 271       simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
 272       simgrid::kernel::activity::CommImpl* act;
 273       if (use_remote_comm) {
 274         mc_model_checker->process().read(temp_synchro,
 275                                          remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
 276         act = temp_synchro.get_buffer();
 277       } else
 278         act = remote_act;
 279
 280       char* p;
 281       if (act->src_actor_.get() == nullptr || act->dst_actor_.get() == nullptr) {
 282         type = "Test FALSE";
 283         p    = pointer_to_string(remote_act);
 284         args = bprintf("comm=%s", p);
 285       } else {
 286         type = "Test TRUE";
 287         p    = pointer_to_string(remote_act);
 288
 289         smx_actor_t src_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
 290         smx_actor_t dst_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
 291         args                 = bprintf("comm=%s [(%ld)%s (%s) -> (%ld)%s (%s)]", p, src_proc->get_pid(),
 292                        MC_smx_actor_get_name(src_proc), MC_smx_actor_get_host_name(src_proc), dst_proc->get_pid(),
 293                        MC_smx_actor_get_name(dst_proc), MC_smx_actor_get_host_name(dst_proc));
 294       }
 295       xbt_free(p);
 296       break;
 297     }
 298
 299     case SIMCALL_COMM_WAITANY: {
 300       type         = "WaitAny";
 301       size_t count = simcall_comm_waitany__get__count(req);
 302       if (count > 0) {
 303         simgrid::kernel::activity::CommImpl* remote_sync;
 304         remote_sync = mc_model_checker->process().read(remote(simcall_comm_waitany__get__comms(req) + value));
 305         char* p     = pointer_to_string(remote_sync);
 306         args        = bprintf("comm=%s (%d of %zu)", p, value + 1, count);
 307         xbt_free(p);
 308       } else
 309         args = bprintf("comm at idx %d", value);
 310       break;
 311     }
 312
 313     case SIMCALL_COMM_TESTANY:
 314       if (value == -1) {
 315         type = "TestAny FALSE";
 316         args = xbt_strdup("-");
 317       } else {
 318         type = "TestAny";
 319         args = bprintf("(%d of %zu)", value + 1, simcall_comm_testany__get__count(req));
 320       }
 321       break;
 322
 323     case SIMCALL_MUTEX_TRYLOCK:
 324     case SIMCALL_MUTEX_LOCK: {
 325       if (req->call_ == SIMCALL_MUTEX_LOCK)
 326         type = "Mutex LOCK";
 327       else
 328         type = "Mutex TRYLOCK";
 329
 330       simgrid::mc::Remote<simgrid::kernel::activity::MutexImpl> mutex;
 331       mc_model_checker->process().read_bytes(mutex.get_buffer(), sizeof(mutex),
 332                                              remote(req->call_ == SIMCALL_MUTEX_LOCK
 333                                                         ? simcall_mutex_lock__get__mutex(req)
 334                                                         : simcall_mutex_trylock__get__mutex(req)));
 335       args = bprintf("locked = %d, owner = %d, sleeping = n/a", mutex.get_buffer()->is_locked(),
 336                      mutex.get_buffer()->owner_ != nullptr
 337                          ? (int)mc_model_checker->process()
 338                                .resolve_actor(simgrid::mc::remote(mutex.get_buffer()->owner_))
 339                                ->get_pid()
 340                          : -1);
 341       break;
 342     }
 343
 344     case SIMCALL_MC_RANDOM:
 345       type = "MC_RANDOM";
 346       args = bprintf("%d", value);
 347       break;
 348
 349     default:
 350       type = SIMIX_simcall_name(req->call_);
 351       args = bprintf("??");
 352       break;
 353   }
 354
 355   std::string str;
 356   if (args != nullptr)
 357     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s(%s)", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 358                                       MC_smx_actor_get_name(issuer), type, args);
 359   else
 360     str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s ", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
 361                                       MC_smx_actor_get_name(issuer), type);
 362   xbt_free(args);
 363   return str;
 364 }
 365
 366 namespace simgrid {
 367 namespace mc {
 368
 369 bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
 370 {
 371   simgrid::kernel::activity::CommImpl* remote_act = nullptr;
 372   switch (req->call_) {
 373
 374     case SIMCALL_COMM_WAIT:
 375       /* FIXME: check also that src and dst processes are not suspended */
 376       remote_act = simcall_comm_wait__getraw__comm(req);
 377       break;
 378
 379     case SIMCALL_COMM_WAITANY:
 380       remote_act = mc_model_checker->process().read(remote(simcall_comm_testany__get__comms(req) + idx));
 381       break;
 382
 383     case SIMCALL_COMM_TESTANY:
 384       remote_act = mc_model_checker->process().read(remote(simcall_comm_testany__get__comms(req) + idx));
 385       break;
 386
 387     default:
 388       return true;
 389   }
 390
 391   simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 392   mc_model_checker->process().read(temp_comm, remote(remote_act));
 393   simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 394   return comm->src_actor_.get() && comm->dst_actor_.get();
 395 }
 396
 397
 398 static const char* colors[] = {
 399   "blue",
 400   "red",
 401   "green3",
 402   "goldenrod",
 403   "brown",
 404   "purple",
 405   "magenta",
 406   "turquoise4",
 407   "gray25",
 408   "forestgreen",
 409   "hotpink",
 410   "lightblue",
 411   "tan",
 412 };
 413
 414 static inline const char* get_color(int id)
 415 {
 416   return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
 417 }
 418
 419 std::string request_get_dot_output(smx_simcall_t req, int value)
 420 {
 421   const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 422   const char* color        = get_color(issuer->get_pid() - 1);
 423
 424   if (req->inspector_ != nullptr)
 425     return simgrid::xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s",
 426                                        req->inspector_->dot_label().c_str(), color, color);
 427
 428   std::string label;
 429
 430   switch (req->call_) {
 431     case SIMCALL_COMM_ISEND:
 432       if (issuer->get_host())
 433         label = simgrid::xbt::string_printf("[(%ld)%s] iSend", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 434       else
 435         label = bprintf("[(%ld)] iSend", issuer->get_pid());
 436       break;
 437
 438     case SIMCALL_COMM_IRECV:
 439       if (issuer->get_host())
 440         label = simgrid::xbt::string_printf("[(%ld)%s] iRecv", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 441       else
 442         label = simgrid::xbt::string_printf("[(%ld)] iRecv", issuer->get_pid());
 443       break;
 444
 445     case SIMCALL_COMM_WAIT:
 446       if (value == -1) {
 447         if (issuer->get_host())
 448           label = simgrid::xbt::string_printf("[(%ld)%s] WaitTimeout", issuer->get_pid(),
 449                                               MC_smx_actor_get_host_name(issuer));
 450         else
 451           label = simgrid::xbt::string_printf("[(%ld)] WaitTimeout", issuer->get_pid());
 452       } else {
 453         simgrid::kernel::activity::ActivityImpl* remote_act = simcall_comm_wait__getraw__comm(req);
 454         simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 455         mc_model_checker->process().read(temp_comm,
 456                                          remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
 457         simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 458
 459         smx_actor_t src_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(comm->src_actor_.get()));
 460         smx_actor_t dst_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(comm->dst_actor_.get()));
 461         if (issuer->get_host())
 462           label = simgrid::xbt::string_printf("[(%ld)%s] Wait [(%ld)->(%ld)]", issuer->get_pid(),
 463                                               MC_smx_actor_get_host_name(issuer), src_proc ? src_proc->get_pid() : 0,
 464                                               dst_proc ? dst_proc->get_pid() : 0);
 465         else
 466           label = simgrid::xbt::string_printf("[(%ld)] Wait [(%ld)->(%ld)]", issuer->get_pid(),
 467                                               src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
 468       }
 469       break;
 470
 471     case SIMCALL_COMM_TEST: {
 472       simgrid::kernel::activity::ActivityImpl* remote_act = simcall_comm_test__getraw__comm(req);
 473       simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
 474       mc_model_checker->process().read(temp_comm,
 475                                        remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
 476       simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
 477       if (comm->src_actor_.get() == nullptr || comm->dst_actor_.get() == nullptr) {
 478         if (issuer->get_host())
 479           label = simgrid::xbt::string_printf("[(%ld)%s] Test FALSE", issuer->get_pid(),
 480                                               MC_smx_actor_get_host_name(issuer));
 481         else
 482           label = bprintf("[(%ld)] Test FALSE", issuer->get_pid());
 483       } else {
 484         if (issuer->get_host())
 485           label =
 486               simgrid::xbt::string_printf("[(%ld)%s] Test TRUE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
 487         else
 488           label = simgrid::xbt::string_printf("[(%ld)] Test TRUE", issuer->get_pid());
 489       }
 490       break;
 491     }
 492
 493     case SIMCALL_COMM_WAITANY: {
 494       size_t comms_size = simcall_comm_waitany__get__count(req);
 495       if (issuer->get_host())
 496         label = simgrid::xbt::string_printf("[(%ld)%s] WaitAny [%d of %zu]", issuer->get_pid(),
 497                                             MC_smx_actor_get_host_name(issuer), value + 1, comms_size);
 498       else
 499         label = simgrid::xbt::string_printf("[(%ld)] WaitAny [%d of %zu]", issuer->get_pid(), value + 1, comms_size);
 500       break;
 501     }
 502
 503     case SIMCALL_COMM_TESTANY:
 504       if (value == -1) {
 505         if (issuer->get_host())
 506           label = simgrid::xbt::string_printf("[(%ld)%s] TestAny FALSE", issuer->get_pid(),
 507                                               MC_smx_actor_get_host_name(issuer));
 508         else
 509           label = simgrid::xbt::string_printf("[(%ld)] TestAny FALSE", issuer->get_pid());
 510       } else {
 511         if (issuer->get_host())
 512           label = simgrid::xbt::string_printf("[(%ld)%s] TestAny TRUE [%d of %lu]", issuer->get_pid(),
 513                                               MC_smx_actor_get_host_name(issuer), value + 1,
 514                                               simcall_comm_testany__get__count(req));
 515         else
 516           label = simgrid::xbt::string_printf("[(%ld)] TestAny TRUE [%d of %lu]", issuer->get_pid(), value + 1,
 517                                               simcall_comm_testany__get__count(req));
 518       }
 519       break;
 520
 521     case SIMCALL_MUTEX_TRYLOCK:
 522       label = simgrid::xbt::string_printf("[(%ld)] Mutex TRYLOCK", issuer->get_pid());
 523       break;
 524
 525     case SIMCALL_MUTEX_LOCK:
 526       label = simgrid::xbt::string_printf("[(%ld)] Mutex LOCK", issuer->get_pid());
 527       break;
 528
 529     case SIMCALL_MC_RANDOM:
 530       if (issuer->get_host())
 531         label = simgrid::xbt::string_printf("[(%ld)%s] MC_RANDOM (%d)", issuer->get_pid(),
 532                                             MC_smx_actor_get_host_name(issuer), value);
 533       else
 534         label = simgrid::xbt::string_printf("[(%ld)] MC_RANDOM (%d)", issuer->get_pid(), value);
 535       break;
 536
 537     default:
 538       THROW_UNIMPLEMENTED;
 539   }
 540
 541   return  simgrid::xbt::string_printf(
 542         "label = \"%s\", color = %s, fontcolor = %s", label.c_str(),
 543         color, color);
 544 }
 545
 546 }
 547 }