src/mc/mc_request.cpp

   1 /* Copyright (c) 2008-2015. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include <cassert>
   8
   9 #include <xbt/log.h>
  10 #include <xbt/str.h>
  11 #include <xbt/sysdep.h>
  12 #include <xbt/dynar.h>
  13 #include <xbt/swag.h>
  14
  15 #include "src/mc/mc_request.h"
  16 #include "src/mc/mc_safety.h"
  17 #include "src/mc/mc_private.h"
  18 #include "src/mc/mc_smx.h"
  19 #include "src/mc/mc_xbt.hpp"
  20
  21 using simgrid::mc::remote;
  22
  23 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_request, mc,
  24                                 "Logging specific to MC (request)");
  25
  26 static char *pointer_to_string(void *pointer);
  27 static char *buff_size_to_string(size_t size);
  28
  29 static inline
  30 simgrid::kernel::activity::Comm* MC_get_comm(smx_simcall_t r)
  31 {
  32   switch (r->call ) {
  33   case SIMCALL_COMM_WAIT:
  34     return static_cast<simgrid::kernel::activity::Comm*>(simcall_comm_wait__get__comm(r));
  35   case SIMCALL_COMM_TEST:
  36     return static_cast<simgrid::kernel::activity::Comm*>(simcall_comm_test__get__comm(r));
  37   default:
  38     return nullptr;
  39   }
  40 }
  41
  42 static inline
  43 smx_mailbox_t MC_get_mbox(smx_simcall_t r)
  44 {
  45   switch(r->call) {
  46   case SIMCALL_COMM_ISEND:
  47     return simcall_comm_isend__get__mbox(r);
  48   case SIMCALL_COMM_IRECV:
  49     return simcall_comm_irecv__get__mbox(r);
  50   default:
  51     return nullptr;
  52   }
  53 }
  54
  55 namespace simgrid {
  56 namespace mc {
  57
  58 // Does half the job
  59 static inline
  60 bool request_depend_asymmetric(smx_simcall_t r1, smx_simcall_t r2)
  61 {
  62   if (r1->call == SIMCALL_COMM_ISEND && r2->call == SIMCALL_COMM_IRECV)
  63     return false;
  64
  65   if (r1->call == SIMCALL_COMM_IRECV && r2->call == SIMCALL_COMM_ISEND)
  66     return false;
  67
  68   // Those are internal requests, we do not need indirection
  69   // because those objects are copies:
  70   simgrid::kernel::activity::Comm* synchro1 = MC_get_comm(r1);
  71   simgrid::kernel::activity::Comm* synchro2 = MC_get_comm(r2);
  72
  73   if ((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
  74       && r2->call == SIMCALL_COMM_WAIT) {
  75
  76     smx_mailbox_t mbox = MC_get_mbox(r1);
  77
  78     if (mbox != synchro2->mbox_cpy
  79         && simcall_comm_wait__get__timeout(r2) <= 0)
  80       return false;
  81
  82     if ((r1->issuer != synchro2->src_proc)
  83         && (r1->issuer != synchro2->dst_proc)
  84         && simcall_comm_wait__get__timeout(r2) <= 0)
  85       return false;
  86
  87     if ((r1->call == SIMCALL_COMM_ISEND)
  88         && (synchro2->type == SIMIX_COMM_SEND)
  89         && (synchro2->src_buff !=
  90             simcall_comm_isend__get__src_buff(r1))
  91         && simcall_comm_wait__get__timeout(r2) <= 0)
  92       return false;
  93
  94     if ((r1->call == SIMCALL_COMM_IRECV)
  95         && (synchro2->type == SIMIX_COMM_RECEIVE)
  96         && (synchro2->dst_buff != simcall_comm_irecv__get__dst_buff(r1))
  97         && simcall_comm_wait__get__timeout(r2) <= 0)
  98       return false;
  99   }
 100
 101   /* FIXME: the following rule assumes that the result of the
 102    * isend/irecv call is not stored in a buffer used in the
 103    * test call. */
 104 #if 0
 105   if((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
 106      &&  r2->call == SIMCALL_COMM_TEST)
 107      return FALSE;
 108 #endif
 109
 110   if (r1->call == SIMCALL_COMM_WAIT
 111       && (r2->call == SIMCALL_COMM_WAIT || r2->call == SIMCALL_COMM_TEST)
 112       && (synchro1->src_proc == nullptr || synchro1->dst_proc == nullptr))
 113     return false;
 114
 115   if (r1->call == SIMCALL_COMM_TEST &&
 116       (simcall_comm_test__get__comm(r1) == nullptr
 117        || synchro1->src_buff == nullptr
 118        || synchro1->dst_buff == nullptr))
 119     return false;
 120
 121   if (r1->call == SIMCALL_COMM_TEST && r2->call == SIMCALL_COMM_WAIT
 122       && synchro1->src_buff == synchro2->src_buff
 123       && synchro1->dst_buff == synchro2->dst_buff)
 124     return false;
 125
 126   if (r1->call == SIMCALL_COMM_WAIT && r2->call == SIMCALL_COMM_TEST
 127       && synchro1->src_buff != nullptr
 128       && synchro1->dst_buff != nullptr
 129       && synchro2->src_buff != nullptr
 130       && synchro2->dst_buff != nullptr
 131       && synchro1->dst_buff != synchro2->src_buff
 132       && synchro1->dst_buff != synchro2->dst_buff
 133       && synchro2->dst_buff != synchro1->src_buff)
 134     return false;
 135
 136   return true;
 137 }
 138
 139 // Those are internal_req
 140 bool request_depend(smx_simcall_t r1, smx_simcall_t r2)
 141 {
 142   if (r1->issuer == r2->issuer)
 143     return false;
 144
 145   /* Wait with timeout transitions are not considered by the independence theorem, thus we consider them as dependant with all other transitions */
 146   if ((r1->call == SIMCALL_COMM_WAIT && simcall_comm_wait__get__timeout(r1) > 0)
 147       || (r2->call == SIMCALL_COMM_WAIT
 148           && simcall_comm_wait__get__timeout(r2) > 0))
 149     return TRUE;
 150
 151   if (r1->call != r2->call)
 152     return request_depend_asymmetric(r1, r2)
 153       && request_depend_asymmetric(r2, r1);
 154
 155   // Those are internal requests, we do not need indirection
 156   // because those objects are copies:
 157   simgrid::kernel::activity::Comm* synchro1 = MC_get_comm(r1);
 158   simgrid::kernel::activity::Comm* synchro2 = MC_get_comm(r2);
 159
 160   switch(r1->call) {
 161   case SIMCALL_COMM_ISEND:
 162     return simcall_comm_isend__get__mbox(r1)
 163       == simcall_comm_isend__get__mbox(r2);
 164   case SIMCALL_COMM_IRECV:
 165     return simcall_comm_irecv__get__mbox(r1)
 166       == simcall_comm_irecv__get__mbox(r2);
 167   case SIMCALL_COMM_WAIT:
 168     if (synchro1->src_buff == synchro2->src_buff
 169         && synchro1->dst_buff == synchro2->dst_buff)
 170       return false;
 171     else if (synchro1->src_buff != nullptr
 172         && synchro1->dst_buff != nullptr
 173         && synchro2->src_buff != nullptr
 174         && synchro2->dst_buff != nullptr
 175         && synchro1->dst_buff != synchro2->src_buff
 176         && synchro1->dst_buff != synchro2->dst_buff
 177         && synchro2->dst_buff != synchro1->src_buff)
 178       return false;
 179     else
 180       return true;
 181   default:
 182     return true;
 183   }
 184 }
 185
 186 }
 187 }
 188
 189 static char *pointer_to_string(void *pointer)
 190 {
 191
 192   if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
 193     return bprintf("%p", pointer);
 194
 195   return xbt_strdup("(verbose only)");
 196 }
 197
 198 static char *buff_size_to_string(size_t buff_size)
 199 {
 200
 201   if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
 202     return bprintf("%zu", buff_size);
 203
 204   return xbt_strdup("(verbose only)");
 205 }
 206
 207
 208 std::string simgrid::mc::request_to_string(smx_simcall_t req, int value, simgrid::mc::RequestType request_type)
 209 {
 210   xbt_assert(mc_model_checker != nullptr);
 211
 212   bool use_remote_comm = true;
 213   switch(request_type) {
 214   case simgrid::mc::RequestType::simix:
 215     use_remote_comm = true;
 216     break;
 217   case simgrid::mc::RequestType::executed:
 218   case simgrid::mc::RequestType::internal:
 219     use_remote_comm = false;
 220     break;
 221   }
 222
 223   const char* type = nullptr;
 224   char *args = nullptr;
 225
 226   smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 227
 228   switch (req->call) {
 229
 230   case SIMCALL_COMM_ISEND: {
 231     type = "iSend";
 232     char* p = pointer_to_string(simcall_comm_isend__get__src_buff(req));
 233     char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
 234     if (issuer->host)
 235       args =
 236           bprintf("src=(%lu)%s (%s), buff=%s, size=%s", issuer->pid,
 237                   MC_smx_process_get_host_name(issuer),
 238                   MC_smx_process_get_name(issuer),
 239                   p, bs);
 240     else
 241       args =
 242           bprintf("src=(%lu)%s, buff=%s, size=%s", issuer->pid,
 243                   MC_smx_process_get_name(issuer), p, bs);
 244     xbt_free(bs);
 245     xbt_free(p);
 246     break;
 247   }
 248
 249   case SIMCALL_COMM_IRECV: {
 250     size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
 251
 252     // size_t size = size_pointer ? *size_pointer : 0;
 253     size_t size = 0;
 254     if (remote_size)
 255       mc_model_checker->process().read_bytes(&size, sizeof(size),
 256         remote(remote_size));
 257
 258     type = "iRecv";
 259     char* p = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
 260     char* bs = buff_size_to_string(size);
 261     if (issuer->host)
 262       args =
 263           bprintf("dst=(%lu)%s (%s), buff=%s, size=%s", issuer->pid,
 264                   MC_smx_process_get_host_name(issuer),
 265                   MC_smx_process_get_name(issuer),
 266                   p, bs);
 267     else
 268       args =
 269           bprintf("dst=(%lu)%s, buff=%s, size=%s", issuer->pid,
 270                   MC_smx_process_get_name(issuer),
 271                   p, bs);
 272     xbt_free(bs);
 273     xbt_free(p);
 274     break;
 275   }
 276
 277   case SIMCALL_COMM_WAIT: {
 278     simgrid::kernel::activity::Comm* remote_act =
 279       static_cast<simgrid::kernel::activity::Comm*>(simcall_comm_wait__get__comm(req));
 280     char* p;
 281     if (value == -1) {
 282       type = "WaitTimeout";
 283       p = pointer_to_string(remote_act);
 284       args = bprintf("comm=%s", p);
 285     } else {
 286       type = "Wait";
 287       p = pointer_to_string(remote_act);
 288
 289       simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_synchro;
 290       simgrid::kernel::activity::Comm* act;
 291       if (use_remote_comm) {
 292         mc_model_checker->process().read(temp_synchro, remote(
 293           static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
 294         act = temp_synchro.getBuffer();
 295       } else
 296         act = remote_act;
 297
 298       smx_actor_t src_proc = mc_model_checker->process().resolveProcess(
 299         simgrid::mc::remote(act->src_proc));
 300       smx_actor_t dst_proc = mc_model_checker->process().resolveProcess(
 301         simgrid::mc::remote(act->dst_proc));
 302       args = bprintf("comm=%s [(%lu)%s (%s)-> (%lu)%s (%s)]", p,
 303                      src_proc ? src_proc->pid : 0,
 304                      src_proc ? MC_smx_process_get_host_name(src_proc) : "",
 305                      src_proc ? MC_smx_process_get_name(src_proc) : "",
 306                      dst_proc ? dst_proc->pid : 0,
 307                      dst_proc ? MC_smx_process_get_host_name(dst_proc) : "",
 308                      dst_proc ? MC_smx_process_get_name(dst_proc) : "");
 309     }
 310     xbt_free(p);
 311     break;
 312   }
 313
 314   case SIMCALL_COMM_TEST: {
 315     simgrid::kernel::activity::Comm* remote_act = static_cast<simgrid::kernel::activity::Comm*>(
 316       simcall_comm_test__get__comm(req));
 317     simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_synchro;
 318     simgrid::kernel::activity::Comm* act;
 319     if (use_remote_comm) {
 320       mc_model_checker->process().read(temp_synchro, remote(
 321         static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
 322       act = temp_synchro.getBuffer();
 323     } else
 324       act = remote_act;
 325
 326     char* p;
 327     if (act->src_proc == nullptr || act->dst_proc == nullptr) {
 328       type = "Test FALSE";
 329       p = pointer_to_string(remote_act);
 330       args = bprintf("comm=%s", p);
 331     } else {
 332       type = "Test TRUE";
 333       p = pointer_to_string(remote_act);
 334
 335       smx_actor_t src_proc = mc_model_checker->process().resolveProcess(
 336         simgrid::mc::remote(act->src_proc));
 337       smx_actor_t dst_proc = mc_model_checker->process().resolveProcess(
 338         simgrid::mc::remote(act->dst_proc));
 339       args = bprintf("comm=%s [(%lu)%s (%s) -> (%lu)%s (%s)]", p,
 340                      src_proc->pid,
 341                      MC_smx_process_get_name(src_proc),
 342                      MC_smx_process_get_host_name(src_proc),
 343                      dst_proc->pid,
 344                      MC_smx_process_get_name(dst_proc),
 345                      MC_smx_process_get_host_name(dst_proc));
 346     }
 347     xbt_free(p);
 348     break;
 349   }
 350
 351   case SIMCALL_COMM_WAITANY: {
 352     type = "WaitAny";
 353     s_xbt_dynar_t comms;
 354     mc_model_checker->process().read_bytes(
 355       &comms, sizeof(comms), remote(simcall_comm_waitany__get__comms(req)));
 356     if (!xbt_dynar_is_empty(&comms)) {
 357       smx_activity_t remote_sync;
 358       read_element(mc_model_checker->process(),
 359         &remote_sync, remote(simcall_comm_waitany__get__comms(req)), value,
 360         sizeof(remote_sync));
 361       char* p = pointer_to_string(remote_sync);
 362       args = bprintf("comm=%s (%d of %lu)",
 363         p, value + 1, xbt_dynar_length(&comms));
 364       xbt_free(p);
 365     } else
 366       args = bprintf("comm at idx %d", value);
 367     break;
 368   }
 369
 370   case SIMCALL_COMM_TESTANY:
 371     if (value == -1) {
 372       type = "TestAny FALSE";
 373       args = xbt_strdup("-");
 374     } else {
 375       type = "TestAny";
 376       args =
 377           bprintf("(%d of %zu)", value + 1,
 378                     simcall_comm_testany__get__count(req));
 379     }
 380     break;
 381
 382   case SIMCALL_MUTEX_TRYLOCK:
 383   case SIMCALL_MUTEX_LOCK: {
 384     if (req->call == SIMCALL_MUTEX_LOCK)
 385       type = "Mutex LOCK";
 386     else
 387       type = "Mutex TRYLOCK";
 388
 389     simgrid::mc::Remote<simgrid::simix::Mutex> mutex;
 390     mc_model_checker->process().read_bytes(mutex.getBuffer(), sizeof(mutex),
 391       remote(
 392         req->call == SIMCALL_MUTEX_LOCK
 393         ? simcall_mutex_lock__get__mutex(req)
 394         : simcall_mutex_trylock__get__mutex(req)
 395       ));
 396     s_xbt_swag_t mutex_sleeping;
 397     mc_model_checker->process().read_bytes(&mutex_sleeping, sizeof(mutex_sleeping),
 398       remote(mutex.getBuffer()->sleeping));
 399
 400     args = bprintf("locked = %d, owner = %d, sleeping = %d",
 401       mutex.getBuffer()->locked,
 402       mutex.getBuffer()->owner != nullptr ? (int) mc_model_checker->process().resolveProcess(
 403         simgrid::mc::remote(mutex.getBuffer()->owner))->pid : -1,
 404       mutex_sleeping.count);
 405     break;
 406   }
 407
 408   case SIMCALL_MC_RANDOM:
 409     type = "MC_RANDOM";
 410     args = bprintf("%d", value);
 411     break;
 412
 413   default:
 414     THROW_UNIMPLEMENTED;
 415   }
 416
 417   std::string str;
 418   if (args != nullptr)
 419     str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s(%s)", issuer->pid,
 420                 MC_smx_process_get_host_name(issuer),
 421                 MC_smx_process_get_name(issuer),
 422                 type, args);
 423   else
 424     str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s ", issuer->pid,
 425                 MC_smx_process_get_host_name(issuer),
 426                 MC_smx_process_get_name(issuer),
 427                 type);
 428   xbt_free(args);
 429   return str;
 430 }
 431
 432 namespace simgrid {
 433 namespace mc {
 434
 435 bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
 436 {
 437   smx_activity_t remote_act = nullptr;
 438   switch (req->call) {
 439
 440   case SIMCALL_COMM_WAIT:
 441     /* FIXME: check also that src and dst processes are not suspended */
 442     remote_act = simcall_comm_wait__get__comm(req);
 443     break;
 444
 445   case SIMCALL_COMM_WAITANY: {
 446     read_element(
 447       mc_model_checker->process(), &remote_act,
 448       remote(simcall_comm_waitany__get__comms(req)),
 449       idx, sizeof(remote_act));
 450     }
 451     break;
 452
 453   case SIMCALL_COMM_TESTANY:
 454     remote_act = mc_model_checker->process().read(remote(
 455       simcall_comm_testany__get__comms(req) + idx));
 456     break;
 457
 458   default:
 459     return true;
 460   }
 461
 462   simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
 463   mc_model_checker->process().read(temp_comm, remote(
 464     static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
 465   simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
 466   return comm->src_proc && comm->dst_proc;
 467 }
 468
 469 bool process_is_enabled(smx_actor_t process)
 470 {
 471   return simgrid::mc::request_is_enabled(&process->simcall);
 472 }
 473
 474 static const char* colors[] = {
 475   "blue",
 476   "red",
 477   "green3",
 478   "goldenrod",
 479   "brown",
 480   "purple",
 481   "magenta",
 482   "turquoise4",
 483   "gray25",
 484   "forestgreen",
 485   "hotpink",
 486   "lightblue",
 487   "tan",
 488 };
 489
 490 static inline const char* get_color(int id)
 491 {
 492   return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
 493 }
 494
 495 std::string request_get_dot_output(smx_simcall_t req, int value)
 496 {
 497   std::string label;
 498
 499   const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 500
 501   switch (req->call) {
 502   case SIMCALL_COMM_ISEND:
 503     if (issuer->host)
 504       label = simgrid::xbt::string_printf("[(%lu)%s] iSend", issuer->pid,
 505                   MC_smx_process_get_host_name(issuer));
 506     else
 507       label = bprintf("[(%lu)] iSend", issuer->pid);
 508     break;
 509
 510   case SIMCALL_COMM_IRECV:
 511     if (issuer->host)
 512       label = simgrid::xbt::string_printf("[(%lu)%s] iRecv", issuer->pid,
 513                   MC_smx_process_get_host_name(issuer));
 514     else
 515       label = simgrid::xbt::string_printf("[(%lu)] iRecv", issuer->pid);
 516     break;
 517
 518   case SIMCALL_COMM_WAIT: {
 519     if (value == -1) {
 520       if (issuer->host)
 521         label = simgrid::xbt::string_printf("[(%lu)%s] WaitTimeout", issuer->pid,
 522                     MC_smx_process_get_host_name(issuer));
 523       else
 524         label = simgrid::xbt::string_printf("[(%lu)] WaitTimeout", issuer->pid);
 525     } else {
 526       smx_activity_t remote_act = simcall_comm_wait__get__comm(req);
 527       simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
 528       mc_model_checker->process().read(temp_comm, remote(
 529         static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
 530       simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
 531
 532       smx_actor_t src_proc = mc_model_checker->process().resolveProcess(
 533         simgrid::mc::remote(comm->src_proc));
 534       smx_actor_t dst_proc = mc_model_checker->process().resolveProcess(
 535         simgrid::mc::remote(comm->dst_proc));
 536       if (issuer->host)
 537         label = simgrid::xbt::string_printf("[(%lu)%s] Wait [(%lu)->(%lu)]",
 538                     issuer->pid,
 539                     MC_smx_process_get_host_name(issuer),
 540                     src_proc ? src_proc->pid : 0,
 541                     dst_proc ? dst_proc->pid : 0);
 542       else
 543         label = simgrid::xbt::string_printf("[(%lu)] Wait [(%lu)->(%lu)]",
 544                     issuer->pid,
 545                     src_proc ? src_proc->pid : 0,
 546                     dst_proc ? dst_proc->pid : 0);
 547     }
 548     break;
 549   }
 550
 551   case SIMCALL_COMM_TEST: {
 552     smx_activity_t remote_act = simcall_comm_test__get__comm(req);
 553     simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
 554     mc_model_checker->process().read(temp_comm, remote(
 555       static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
 556     simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
 557     if (comm->src_proc == nullptr || comm->dst_proc == nullptr) {
 558       if (issuer->host)
 559         label = simgrid::xbt::string_printf("[(%lu)%s] Test FALSE",
 560                     issuer->pid,
 561                     MC_smx_process_get_host_name(issuer));
 562       else
 563         label = bprintf("[(%lu)] Test FALSE", issuer->pid);
 564     } else {
 565       if (issuer->host)
 566         label = simgrid::xbt::string_printf("[(%lu)%s] Test TRUE", issuer->pid,
 567                     MC_smx_process_get_host_name(issuer));
 568       else
 569         label = simgrid::xbt::string_printf("[(%lu)] Test TRUE", issuer->pid);
 570     }
 571     break;
 572   }
 573
 574   case SIMCALL_COMM_WAITANY: {
 575     unsigned long comms_size = read_length(
 576       mc_model_checker->process(), remote(simcall_comm_waitany__get__comms(req)));
 577     if (issuer->host)
 578       label = simgrid::xbt::string_printf("[(%lu)%s] WaitAny [%d of %lu]",
 579                   issuer->pid,
 580                   MC_smx_process_get_host_name(issuer), value + 1,
 581                   comms_size);
 582     else
 583       label = simgrid::xbt::string_printf("[(%lu)] WaitAny [%d of %lu]",
 584                   issuer->pid, value + 1, comms_size);
 585     break;
 586   }
 587
 588   case SIMCALL_COMM_TESTANY:
 589     if (value == -1) {
 590       if (issuer->host)
 591         label = simgrid::xbt::string_printf("[(%lu)%s] TestAny FALSE",
 592                     issuer->pid, MC_smx_process_get_host_name(issuer));
 593       else
 594         label = simgrid::xbt::string_printf("[(%lu)] TestAny FALSE", issuer->pid);
 595     } else {
 596       if (issuer->host)
 597         label = simgrid::xbt::string_printf("[(%lu)%s] TestAny TRUE [%d of %lu]",
 598                     issuer->pid,
 599                     MC_smx_process_get_host_name(issuer), value + 1,
 600                     simcall_comm_testany__get__count(req));
 601       else
 602         label = simgrid::xbt::string_printf("[(%lu)] TestAny TRUE [%d of %lu]",
 603                     issuer->pid,
 604                     value + 1,
 605                     simcall_comm_testany__get__count(req));
 606     }
 607     break;
 608
 609   case SIMCALL_MUTEX_TRYLOCK:
 610     label = simgrid::xbt::string_printf("[(%lu)] Mutex TRYLOCK", issuer->pid);
 611     break;
 612
 613   case SIMCALL_MUTEX_LOCK:
 614     label = simgrid::xbt::string_printf("[(%lu)] Mutex LOCK", issuer->pid);
 615     break;
 616
 617   case SIMCALL_MC_RANDOM:
 618     if (issuer->host)
 619       label = simgrid::xbt::string_printf("[(%lu)%s] MC_RANDOM (%d)",
 620                   issuer->pid, MC_smx_process_get_host_name(issuer), value);
 621     else
 622       label = simgrid::xbt::string_printf("[(%lu)] MC_RANDOM (%d)", issuer->pid, value);
 623     break;
 624
 625   default:
 626     THROW_UNIMPLEMENTED;
 627   }
 628
 629   const char* color = get_color(issuer->pid - 1);
 630   return  simgrid::xbt::string_printf(
 631         "label = \"%s\", color = %s, fontcolor = %s", label.c_str(),
 632         color, color);
 633 }
 634
 635 }
 636 }