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::simix::Comm* MC_get_comm(smx_simcall_t r)
  31 {
  32   switch (r->call ) {
  33   case SIMCALL_COMM_WAIT:
  34     return static_cast<simgrid::simix::Comm*>(simcall_comm_wait__get__comm(r));
  35   case SIMCALL_COMM_TEST:
  36     return static_cast<simgrid::simix::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::simix::Comm* synchro1 = MC_get_comm(r1);
  71   simgrid::simix::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::simix::Comm* synchro1 = MC_get_comm(r1);
 158   simgrid::simix::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_process_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::simix::Comm* remote_act =
 279       static_cast<simgrid::simix::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::simix::Comm> temp_synchro;
 290       simgrid::simix::Comm* act;
 291       if (use_remote_comm) {
 292         mc_model_checker->process().read(temp_synchro, remote(
 293           static_cast<simgrid::simix::Comm*>(remote_act)));
 294         act = temp_synchro.getBuffer();
 295       } else
 296         act = remote_act;
 297
 298       smx_process_t src_proc = mc_model_checker->process().resolveProcess(
 299         simgrid::mc::remote(act->src_proc));
 300       smx_process_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::simix::Comm* remote_act = static_cast<simgrid::simix::Comm*>(
 316       simcall_comm_test__get__comm(req));
 317     simgrid::mc::Remote<simgrid::simix::Comm> temp_synchro;
 318     simgrid::simix::Comm* act;
 319     if (use_remote_comm) {
 320       mc_model_checker->process().read(temp_synchro, remote(
 321         static_cast<simgrid::simix::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_process_t src_proc = mc_model_checker->process().resolveProcess(
 336         simgrid::mc::remote(act->src_proc));
 337       smx_process_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_synchro_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                   read_length(mc_model_checker->process(),
 379                     simcall_comm_testany__get__comms(req)));
 380     }
 381     break;
 382
 383   case SIMCALL_MUTEX_TRYLOCK:
 384   case SIMCALL_MUTEX_LOCK: {
 385     if (req->call == SIMCALL_MUTEX_LOCK)
 386       type = "Mutex LOCK";
 387     else
 388       type = "Mutex TRYLOCK";
 389
 390     s_smx_mutex_t mutex;
 391     mc_model_checker->process().read_bytes(&mutex, sizeof(mutex),
 392       remote(
 393         req->call == SIMCALL_MUTEX_LOCK
 394         ? simcall_mutex_lock__get__mutex(req)
 395         : simcall_mutex_trylock__get__mutex(req)
 396       ));
 397     s_xbt_swag_t mutex_sleeping;
 398     mc_model_checker->process().read_bytes(&mutex_sleeping, sizeof(mutex_sleeping),
 399       remote(mutex.sleeping));
 400
 401     args = bprintf("locked = %d, owner = %d, sleeping = %d",
 402       mutex.locked,
 403       mutex.owner != nullptr ? (int) mc_model_checker->process().resolveProcess(
 404         simgrid::mc::remote(mutex.owner))->pid : -1,
 405       mutex_sleeping.count);
 406     break;
 407   }
 408
 409   case SIMCALL_MC_RANDOM:
 410     type = "MC_RANDOM";
 411     args = bprintf("%d", value);
 412     break;
 413
 414   default:
 415     THROW_UNIMPLEMENTED;
 416   }
 417
 418   std::string str;
 419   if (args != nullptr)
 420     str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s(%s)", issuer->pid,
 421                 MC_smx_process_get_host_name(issuer),
 422                 MC_smx_process_get_name(issuer),
 423                 type, args);
 424   else
 425     str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s ", issuer->pid,
 426                 MC_smx_process_get_host_name(issuer),
 427                 MC_smx_process_get_name(issuer),
 428                 type);
 429   xbt_free(args);
 430   return str;
 431 }
 432
 433 namespace simgrid {
 434 namespace mc {
 435
 436 bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
 437 {
 438   smx_synchro_t remote_act = nullptr;
 439   switch (req->call) {
 440
 441   case SIMCALL_COMM_WAIT:
 442     /* FIXME: check also that src and dst processes are not suspended */
 443     remote_act = simcall_comm_wait__get__comm(req);
 444     break;
 445
 446   case SIMCALL_COMM_WAITANY: {
 447     read_element(
 448       mc_model_checker->process(), &remote_act,
 449       remote(simcall_comm_waitany__get__comms(req)),
 450       idx, sizeof(remote_act));
 451     }
 452     break;
 453
 454   case SIMCALL_COMM_TESTANY: {
 455     read_element(
 456       mc_model_checker->process(), &remote_act,
 457       remote(simcall_comm_testany__get__comms(req)),
 458       idx, sizeof(remote_act));
 459     }
 460     break;
 461
 462   default:
 463     return true;
 464   }
 465
 466   simgrid::mc::Remote<simgrid::simix::Comm> temp_comm;
 467   mc_model_checker->process().read(temp_comm, remote(
 468     static_cast<simgrid::simix::Comm*>(remote_act)));
 469   simgrid::simix::Comm* comm = temp_comm.getBuffer();
 470   return comm->src_proc && comm->dst_proc;
 471 }
 472
 473 bool process_is_enabled(smx_process_t process)
 474 {
 475   return simgrid::mc::request_is_enabled(&process->simcall);
 476 }
 477
 478 static const char* colors[] = {
 479   "blue",
 480   "red",
 481   "green3",
 482   "goldenrod",
 483   "brown",
 484   "purple",
 485   "magenta",
 486   "turquoise4",
 487   "gray25",
 488   "forestgreen",
 489   "hotpink",
 490   "lightblue",
 491   "tan",
 492 };
 493
 494 static inline const char* get_color(int id)
 495 {
 496   return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
 497 }
 498
 499 std::string request_get_dot_output(smx_simcall_t req, int value)
 500 {
 501   std::string label;
 502
 503   const smx_process_t issuer = MC_smx_simcall_get_issuer(req);
 504
 505   switch (req->call) {
 506   case SIMCALL_COMM_ISEND:
 507     if (issuer->host)
 508       label = simgrid::xbt::string_printf("[(%lu)%s] iSend", issuer->pid,
 509                   MC_smx_process_get_host_name(issuer));
 510     else
 511       label = bprintf("[(%lu)] iSend", issuer->pid);
 512     break;
 513
 514   case SIMCALL_COMM_IRECV:
 515     if (issuer->host)
 516       label = simgrid::xbt::string_printf("[(%lu)%s] iRecv", issuer->pid,
 517                   MC_smx_process_get_host_name(issuer));
 518     else
 519       label = simgrid::xbt::string_printf("[(%lu)] iRecv", issuer->pid);
 520     break;
 521
 522   case SIMCALL_COMM_WAIT: {
 523     if (value == -1) {
 524       if (issuer->host)
 525         label = simgrid::xbt::string_printf("[(%lu)%s] WaitTimeout", issuer->pid,
 526                     MC_smx_process_get_host_name(issuer));
 527       else
 528         label = simgrid::xbt::string_printf("[(%lu)] WaitTimeout", issuer->pid);
 529     } else {
 530       smx_synchro_t remote_act = simcall_comm_wait__get__comm(req);
 531       simgrid::mc::Remote<simgrid::simix::Comm> temp_comm;
 532       mc_model_checker->process().read(temp_comm, remote(
 533         static_cast<simgrid::simix::Comm*>(remote_act)));
 534       simgrid::simix::Comm* comm = temp_comm.getBuffer();
 535
 536       smx_process_t src_proc = mc_model_checker->process().resolveProcess(
 537         simgrid::mc::remote(comm->src_proc));
 538       smx_process_t dst_proc = mc_model_checker->process().resolveProcess(
 539         simgrid::mc::remote(comm->dst_proc));
 540       if (issuer->host)
 541         label = simgrid::xbt::string_printf("[(%lu)%s] Wait [(%lu)->(%lu)]",
 542                     issuer->pid,
 543                     MC_smx_process_get_host_name(issuer),
 544                     src_proc ? src_proc->pid : 0,
 545                     dst_proc ? dst_proc->pid : 0);
 546       else
 547         label = simgrid::xbt::string_printf("[(%lu)] Wait [(%lu)->(%lu)]",
 548                     issuer->pid,
 549                     src_proc ? src_proc->pid : 0,
 550                     dst_proc ? dst_proc->pid : 0);
 551     }
 552     break;
 553   }
 554
 555   case SIMCALL_COMM_TEST: {
 556     smx_synchro_t remote_act = simcall_comm_test__get__comm(req);
 557     simgrid::mc::Remote<simgrid::simix::Comm> temp_comm;
 558     mc_model_checker->process().read(temp_comm, remote(
 559       static_cast<simgrid::simix::Comm*>(remote_act)));
 560     simgrid::simix::Comm* comm = temp_comm.getBuffer();
 561     if (comm->src_proc == nullptr || comm->dst_proc == nullptr) {
 562       if (issuer->host)
 563         label = simgrid::xbt::string_printf("[(%lu)%s] Test FALSE",
 564                     issuer->pid,
 565                     MC_smx_process_get_host_name(issuer));
 566       else
 567         label = bprintf("[(%lu)] Test FALSE", issuer->pid);
 568     } else {
 569       if (issuer->host)
 570         label = simgrid::xbt::string_printf("[(%lu)%s] Test TRUE", issuer->pid,
 571                     MC_smx_process_get_host_name(issuer));
 572       else
 573         label = simgrid::xbt::string_printf("[(%lu)] Test TRUE", issuer->pid);
 574     }
 575     break;
 576   }
 577
 578   case SIMCALL_COMM_WAITANY: {
 579     unsigned long comms_size = read_length(
 580       mc_model_checker->process(), remote(simcall_comm_waitany__get__comms(req)));
 581     if (issuer->host)
 582       label = simgrid::xbt::string_printf("[(%lu)%s] WaitAny [%d of %lu]",
 583                   issuer->pid,
 584                   MC_smx_process_get_host_name(issuer), value + 1,
 585                   comms_size);
 586     else
 587       label = simgrid::xbt::string_printf("[(%lu)] WaitAny [%d of %lu]",
 588                   issuer->pid, value + 1, comms_size);
 589     break;
 590   }
 591
 592   case SIMCALL_COMM_TESTANY:
 593     if (value == -1) {
 594       if (issuer->host)
 595         label = simgrid::xbt::string_printf("[(%lu)%s] TestAny FALSE",
 596                     issuer->pid, MC_smx_process_get_host_name(issuer));
 597       else
 598         label = simgrid::xbt::string_printf("[(%lu)] TestAny FALSE", issuer->pid);
 599     } else {
 600       if (issuer->host)
 601         label = simgrid::xbt::string_printf("[(%lu)%s] TestAny TRUE [%d of %lu]",
 602                     issuer->pid,
 603                     MC_smx_process_get_host_name(issuer), value + 1,
 604                     xbt_dynar_length(simcall_comm_testany__get__comms(req)));
 605       else
 606         label = simgrid::xbt::string_printf("[(%lu)] TestAny TRUE [%d of %lu]",
 607                     issuer->pid,
 608                     value + 1,
 609                     xbt_dynar_length(simcall_comm_testany__get__comms(req)));
 610     }
 611     break;
 612
 613   case SIMCALL_MUTEX_TRYLOCK:
 614     label = simgrid::xbt::string_printf("[(%lu)] Mutex TRYLOCK", issuer->pid);
 615     break;
 616
 617   case SIMCALL_MUTEX_LOCK:
 618     label = simgrid::xbt::string_printf("[(%lu)] Mutex LOCK", issuer->pid);
 619     break;
 620
 621   case SIMCALL_MC_RANDOM:
 622     if (issuer->host)
 623       label = simgrid::xbt::string_printf("[(%lu)%s] MC_RANDOM (%d)",
 624                   issuer->pid, MC_smx_process_get_host_name(issuer), value);
 625     else
 626       label = simgrid::xbt::string_printf("[(%lu)] MC_RANDOM (%d)", issuer->pid, value);
 627     break;
 628
 629   default:
 630     THROW_UNIMPLEMENTED;
 631   }
 632
 633   const char* color = get_color(issuer->pid - 1);
 634   return  simgrid::xbt::string_printf(
 635         "label = \"%s\", color = %s, fontcolor = %s", label.c_str(),
 636         color, color);
 637 }
 638
 639 }
 640 }