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 = bprintf("src=(%lu)%s (%s), buff=%s, size=%s", issuer->pid, MC_smx_actor_get_host_name(issuer),
 236                      MC_smx_actor_get_name(issuer), p, bs);
 237     else
 238       args = bprintf("src=(%lu)%s, buff=%s, size=%s", issuer->pid, MC_smx_actor_get_name(issuer), p, bs);
 239     xbt_free(bs);
 240     xbt_free(p);
 241     break;
 242   }
 243
 244   case SIMCALL_COMM_IRECV: {
 245     size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
 246
 247     // size_t size = size_pointer ? *size_pointer : 0;
 248     size_t size = 0;
 249     if (remote_size)
 250       mc_model_checker->process().read_bytes(&size, sizeof(size),
 251         remote(remote_size));
 252
 253     type = "iRecv";
 254     char* p = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
 255     char* bs = buff_size_to_string(size);
 256     if (issuer->host)
 257       args = bprintf("dst=(%lu)%s (%s), buff=%s, size=%s", issuer->pid, MC_smx_actor_get_host_name(issuer),
 258                      MC_smx_actor_get_name(issuer), p, bs);
 259     else
 260       args = bprintf("dst=(%lu)%s, buff=%s, size=%s", issuer->pid, MC_smx_actor_get_name(issuer), p, bs);
 261     xbt_free(bs);
 262     xbt_free(p);
 263     break;
 264   }
 265
 266   case SIMCALL_COMM_WAIT: {
 267     simgrid::kernel::activity::Comm* remote_act =
 268       static_cast<simgrid::kernel::activity::Comm*>(simcall_comm_wait__get__comm(req));
 269     char* p;
 270     if (value == -1) {
 271       type = "WaitTimeout";
 272       p = pointer_to_string(remote_act);
 273       args = bprintf("comm=%s", p);
 274     } else {
 275       type = "Wait";
 276       p = pointer_to_string(remote_act);
 277
 278       simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_synchro;
 279       simgrid::kernel::activity::Comm* act;
 280       if (use_remote_comm) {
 281         mc_model_checker->process().read(temp_synchro, remote(
 282           static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
 283         act = temp_synchro.getBuffer();
 284       } else
 285         act = remote_act;
 286
 287       smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->src_proc));
 288       smx_actor_t dst_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->dst_proc));
 289       args =
 290           bprintf("comm=%s [(%lu)%s (%s)-> (%lu)%s (%s)]", p, src_proc ? src_proc->pid : 0,
 291                   src_proc ? MC_smx_actor_get_host_name(src_proc) : "", src_proc ? MC_smx_actor_get_name(src_proc) : "",
 292                   dst_proc ? dst_proc->pid : 0, dst_proc ? MC_smx_actor_get_host_name(dst_proc) : "",
 293                   dst_proc ? MC_smx_actor_get_name(dst_proc) : "");
 294     }
 295     xbt_free(p);
 296     break;
 297   }
 298
 299   case SIMCALL_COMM_TEST: {
 300     simgrid::kernel::activity::Comm* remote_act = static_cast<simgrid::kernel::activity::Comm*>(
 301       simcall_comm_test__get__comm(req));
 302     simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_synchro;
 303     simgrid::kernel::activity::Comm* act;
 304     if (use_remote_comm) {
 305       mc_model_checker->process().read(temp_synchro, remote(
 306         static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
 307       act = temp_synchro.getBuffer();
 308     } else
 309       act = remote_act;
 310
 311     char* p;
 312     if (act->src_proc == nullptr || act->dst_proc == nullptr) {
 313       type = "Test FALSE";
 314       p = pointer_to_string(remote_act);
 315       args = bprintf("comm=%s", p);
 316     } else {
 317       type = "Test TRUE";
 318       p = pointer_to_string(remote_act);
 319
 320       smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->src_proc));
 321       smx_actor_t dst_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->dst_proc));
 322       args = bprintf("comm=%s [(%lu)%s (%s) -> (%lu)%s (%s)]", p, src_proc->pid, MC_smx_actor_get_name(src_proc),
 323                      MC_smx_actor_get_host_name(src_proc), dst_proc->pid, MC_smx_actor_get_name(dst_proc),
 324                      MC_smx_actor_get_host_name(dst_proc));
 325     }
 326     xbt_free(p);
 327     break;
 328   }
 329
 330   case SIMCALL_COMM_WAITANY: {
 331     type = "WaitAny";
 332     s_xbt_dynar_t comms;
 333     mc_model_checker->process().read_bytes(
 334       &comms, sizeof(comms), remote(simcall_comm_waitany__get__comms(req)));
 335     if (!xbt_dynar_is_empty(&comms)) {
 336       smx_activity_t remote_sync;
 337       read_element(mc_model_checker->process(),
 338         &remote_sync, remote(simcall_comm_waitany__get__comms(req)), value,
 339         sizeof(remote_sync));
 340       char* p = pointer_to_string(remote_sync);
 341       args = bprintf("comm=%s (%d of %lu)",
 342         p, value + 1, xbt_dynar_length(&comms));
 343       xbt_free(p);
 344     } else
 345       args = bprintf("comm at idx %d", value);
 346     break;
 347   }
 348
 349   case SIMCALL_COMM_TESTANY:
 350     if (value == -1) {
 351       type = "TestAny FALSE";
 352       args = xbt_strdup("-");
 353     } else {
 354       type = "TestAny";
 355       args =
 356           bprintf("(%d of %zu)", value + 1,
 357                     simcall_comm_testany__get__count(req));
 358     }
 359     break;
 360
 361   case SIMCALL_MUTEX_TRYLOCK:
 362   case SIMCALL_MUTEX_LOCK: {
 363     if (req->call == SIMCALL_MUTEX_LOCK)
 364       type = "Mutex LOCK";
 365     else
 366       type = "Mutex TRYLOCK";
 367
 368     simgrid::mc::Remote<simgrid::simix::Mutex> mutex;
 369     mc_model_checker->process().read_bytes(mutex.getBuffer(), sizeof(mutex),
 370       remote(
 371         req->call == SIMCALL_MUTEX_LOCK
 372         ? simcall_mutex_lock__get__mutex(req)
 373         : simcall_mutex_trylock__get__mutex(req)
 374       ));
 375     s_xbt_swag_t mutex_sleeping;
 376     mc_model_checker->process().read_bytes(&mutex_sleeping, sizeof(mutex_sleeping),
 377       remote(mutex.getBuffer()->sleeping));
 378
 379     args =
 380         bprintf("locked = %d, owner = %d, sleeping = %d", mutex.getBuffer()->locked,
 381                 mutex.getBuffer()->owner != nullptr
 382                     ? (int)mc_model_checker->process().resolveActor(simgrid::mc::remote(mutex.getBuffer()->owner))->pid
 383                     : -1,
 384                 mutex_sleeping.count);
 385     break;
 386   }
 387
 388   case SIMCALL_MC_RANDOM:
 389     type = "MC_RANDOM";
 390     args = bprintf("%d", value);
 391     break;
 392
 393   default:
 394     THROW_UNIMPLEMENTED;
 395   }
 396
 397   std::string str;
 398   if (args != nullptr)
 399     str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s(%s)", issuer->pid, MC_smx_actor_get_host_name(issuer),
 400                                       MC_smx_actor_get_name(issuer), type, args);
 401   else
 402     str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s ", issuer->pid, MC_smx_actor_get_host_name(issuer),
 403                                       MC_smx_actor_get_name(issuer), type);
 404   xbt_free(args);
 405   return str;
 406 }
 407
 408 namespace simgrid {
 409 namespace mc {
 410
 411 bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
 412 {
 413   smx_activity_t remote_act = nullptr;
 414   switch (req->call) {
 415
 416   case SIMCALL_COMM_WAIT:
 417     /* FIXME: check also that src and dst processes are not suspended */
 418     remote_act = simcall_comm_wait__get__comm(req);
 419     break;
 420
 421   case SIMCALL_COMM_WAITANY: {
 422     read_element(
 423       mc_model_checker->process(), &remote_act,
 424       remote(simcall_comm_waitany__get__comms(req)),
 425       idx, sizeof(remote_act));
 426     }
 427     break;
 428
 429   case SIMCALL_COMM_TESTANY:
 430     remote_act = mc_model_checker->process().read(remote(
 431       simcall_comm_testany__get__comms(req) + idx));
 432     break;
 433
 434   default:
 435     return true;
 436   }
 437
 438   simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
 439   mc_model_checker->process().read(temp_comm, remote(
 440     static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
 441   simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
 442   return comm->src_proc && comm->dst_proc;
 443 }
 444
 445 bool actor_is_enabled(smx_actor_t actor)
 446 {
 447   return simgrid::mc::request_is_enabled(&actor->simcall);
 448 }
 449
 450 static const char* colors[] = {
 451   "blue",
 452   "red",
 453   "green3",
 454   "goldenrod",
 455   "brown",
 456   "purple",
 457   "magenta",
 458   "turquoise4",
 459   "gray25",
 460   "forestgreen",
 461   "hotpink",
 462   "lightblue",
 463   "tan",
 464 };
 465
 466 static inline const char* get_color(int id)
 467 {
 468   return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
 469 }
 470
 471 std::string request_get_dot_output(smx_simcall_t req, int value)
 472 {
 473   std::string label;
 474
 475   const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 476
 477   switch (req->call) {
 478   case SIMCALL_COMM_ISEND:
 479     if (issuer->host)
 480       label = simgrid::xbt::string_printf("[(%lu)%s] iSend", issuer->pid, MC_smx_actor_get_host_name(issuer));
 481     else
 482       label = bprintf("[(%lu)] iSend", issuer->pid);
 483     break;
 484
 485   case SIMCALL_COMM_IRECV:
 486     if (issuer->host)
 487       label = simgrid::xbt::string_printf("[(%lu)%s] iRecv", issuer->pid, MC_smx_actor_get_host_name(issuer));
 488     else
 489       label = simgrid::xbt::string_printf("[(%lu)] iRecv", issuer->pid);
 490     break;
 491
 492   case SIMCALL_COMM_WAIT: {
 493     if (value == -1) {
 494       if (issuer->host)
 495         label = simgrid::xbt::string_printf("[(%lu)%s] WaitTimeout", issuer->pid, MC_smx_actor_get_host_name(issuer));
 496       else
 497         label = simgrid::xbt::string_printf("[(%lu)] WaitTimeout", issuer->pid);
 498     } else {
 499       smx_activity_t remote_act = simcall_comm_wait__get__comm(req);
 500       simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
 501       mc_model_checker->process().read(temp_comm, remote(
 502         static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
 503       simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
 504
 505       smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(comm->src_proc));
 506       smx_actor_t dst_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(comm->dst_proc));
 507       if (issuer->host)
 508         label = simgrid::xbt::string_printf("[(%lu)%s] Wait [(%lu)->(%lu)]", issuer->pid,
 509                                             MC_smx_actor_get_host_name(issuer), src_proc ? src_proc->pid : 0,
 510                                             dst_proc ? dst_proc->pid : 0);
 511       else
 512         label = simgrid::xbt::string_printf("[(%lu)] Wait [(%lu)->(%lu)]",
 513                     issuer->pid,
 514                     src_proc ? src_proc->pid : 0,
 515                     dst_proc ? dst_proc->pid : 0);
 516     }
 517     break;
 518   }
 519
 520   case SIMCALL_COMM_TEST: {
 521     smx_activity_t remote_act = simcall_comm_test__get__comm(req);
 522     simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
 523     mc_model_checker->process().read(temp_comm, remote(
 524       static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
 525     simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
 526     if (comm->src_proc == nullptr || comm->dst_proc == nullptr) {
 527       if (issuer->host)
 528         label = simgrid::xbt::string_printf("[(%lu)%s] Test FALSE", issuer->pid, MC_smx_actor_get_host_name(issuer));
 529       else
 530         label = bprintf("[(%lu)] Test FALSE", issuer->pid);
 531     } else {
 532       if (issuer->host)
 533         label = simgrid::xbt::string_printf("[(%lu)%s] Test TRUE", issuer->pid, MC_smx_actor_get_host_name(issuer));
 534       else
 535         label = simgrid::xbt::string_printf("[(%lu)] Test TRUE", issuer->pid);
 536     }
 537     break;
 538   }
 539
 540   case SIMCALL_COMM_WAITANY: {
 541     unsigned long comms_size = read_length(
 542       mc_model_checker->process(), remote(simcall_comm_waitany__get__comms(req)));
 543     if (issuer->host)
 544       label = simgrid::xbt::string_printf("[(%lu)%s] WaitAny [%d of %lu]", issuer->pid,
 545                                           MC_smx_actor_get_host_name(issuer), value + 1, comms_size);
 546     else
 547       label = simgrid::xbt::string_printf("[(%lu)] WaitAny [%d of %lu]",
 548                   issuer->pid, value + 1, comms_size);
 549     break;
 550   }
 551
 552   case SIMCALL_COMM_TESTANY:
 553     if (value == -1) {
 554       if (issuer->host)
 555         label = simgrid::xbt::string_printf("[(%lu)%s] TestAny FALSE", issuer->pid, MC_smx_actor_get_host_name(issuer));
 556       else
 557         label = simgrid::xbt::string_printf("[(%lu)] TestAny FALSE", issuer->pid);
 558     } else {
 559       if (issuer->host)
 560         label = simgrid::xbt::string_printf("[(%lu)%s] TestAny TRUE [%d of %lu]", issuer->pid,
 561                                             MC_smx_actor_get_host_name(issuer), value + 1,
 562                                             simcall_comm_testany__get__count(req));
 563       else
 564         label = simgrid::xbt::string_printf("[(%lu)] TestAny TRUE [%d of %lu]",
 565                     issuer->pid,
 566                     value + 1,
 567                     simcall_comm_testany__get__count(req));
 568     }
 569     break;
 570
 571   case SIMCALL_MUTEX_TRYLOCK:
 572     label = simgrid::xbt::string_printf("[(%lu)] Mutex TRYLOCK", issuer->pid);
 573     break;
 574
 575   case SIMCALL_MUTEX_LOCK:
 576     label = simgrid::xbt::string_printf("[(%lu)] Mutex LOCK", issuer->pid);
 577     break;
 578
 579   case SIMCALL_MC_RANDOM:
 580     if (issuer->host)
 581       label = simgrid::xbt::string_printf("[(%lu)%s] MC_RANDOM (%d)", issuer->pid, MC_smx_actor_get_host_name(issuer),
 582                                           value);
 583     else
 584       label = simgrid::xbt::string_printf("[(%lu)] MC_RANDOM (%d)", issuer->pid, value);
 585     break;
 586
 587   default:
 588     THROW_UNIMPLEMENTED;
 589   }
 590
 591   const char* color = get_color(issuer->pid - 1);
 592   return  simgrid::xbt::string_printf(
 593         "label = \"%s\", color = %s, fontcolor = %s", label.c_str(),
 594         color, color);
 595 }
 596
 597 }
 598 }