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MC: Further renamings
[simgrid.git] / src / mc / mc_request.cpp
index 4d0ebf4..565aeec 100644 (file)
-/* Copyright (c) 2008-2014. The SimGrid Team.
- * All rights reserved.                                                     */
+/* Copyright (c) 2008-2020. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
-#include <assert.h>
+#include "src/mc/mc_request.hpp"
+#include "src/include/mc/mc.h"
+#include "src/kernel/activity/CommImpl.hpp"
+#include "src/kernel/activity/MutexImpl.hpp"
+#include "src/mc/ModelChecker.hpp"
+#include "src/mc/checker/SimcallInspector.hpp"
+#include "src/mc/mc_smx.hpp"
 
-#include "mc_request.h"
-#include "mc_safety.h"
-#include "mc_private.h"
-#include "mc_smx.h"
+using simgrid::mc::remote;
 
-extern "C" {
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_request, mc,
-                                "Logging specific to MC (request)");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_request, mc, "Logging specific to MC (request)");
 
 static char *pointer_to_string(void *pointer);
 static char *buff_size_to_string(size_t size);
 
-// Those are MC_state_get_internal_request(state)
-int MC_request_depend(smx_simcall_t r1, smx_simcall_t r2)
+static inline simgrid::kernel::activity::CommImpl* MC_get_comm(smx_simcall_t r)
 {
-  if (mc_reduce_kind == e_mc_reduce_none)
-    return TRUE;
-
-  if (r1->issuer == r2->issuer)
-    return FALSE;
+  switch (r->call_) {
+    case SIMCALL_COMM_WAIT:
+      return static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(r));
+    case SIMCALL_COMM_TEST:
+      return static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_test__getraw__comm(r));
+    default:
+      return nullptr;
+  }
+}
 
-  /* Wait with timeout transitions are not considered by the independance theorem, thus we consider them as dependant with all other transitions */
-  if ((r1->call == SIMCALL_COMM_WAIT && simcall_comm_wait__get__timeout(r1) > 0)
-      || (r2->call == SIMCALL_COMM_WAIT
-          && simcall_comm_wait__get__timeout(r2) > 0))
-    return TRUE;
+static inline
+smx_mailbox_t MC_get_mbox(smx_simcall_t r)
+{
+  switch (r->call_) {
+    case SIMCALL_COMM_ISEND:
+      return simcall_comm_isend__get__mbox(r);
+    case SIMCALL_COMM_IRECV:
+      return simcall_comm_irecv__get__mbox(r);
+    default:
+      return nullptr;
+  }
+}
 
-  if (r1->call == SIMCALL_COMM_ISEND && r2->call == SIMCALL_COMM_IRECV)
-    return FALSE;
+namespace simgrid {
+namespace mc {
 
-  if (r1->call == SIMCALL_COMM_IRECV && r2->call == SIMCALL_COMM_ISEND)
-    return FALSE;
+// Does half the job
+static inline
+bool request_depend_asymmetric(smx_simcall_t r1, smx_simcall_t r2)
+{
+  if (r1->call_ == SIMCALL_COMM_ISEND && r2->call_ == SIMCALL_COMM_IRECV)
+    return false;
 
-  // Those are internal requests, we do not need indirection
-  // because those objects are copies:
-  smx_synchro_t synchro1 = NULL, synchro2 = NULL;
-  if (r1->call == SIMCALL_COMM_WAIT) {
-    synchro1 = simcall_comm_wait__get__comm(r1);
-  }
-  if (r2->call == SIMCALL_COMM_WAIT) {
-    synchro2 = simcall_comm_wait__get__comm(r2);
-  }
-  if (r1->call == SIMCALL_COMM_TEST) {
-    synchro1 = simcall_comm_test__get__comm(r1);
-  }
-  if (r2->call == SIMCALL_COMM_TEST) {
-    synchro2 = simcall_comm_test__get__comm(r2);
-  }
+  if (r1->call_ == SIMCALL_COMM_IRECV && r2->call_ == SIMCALL_COMM_ISEND)
+    return false;
 
-  if ((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
-      && r2->call == SIMCALL_COMM_WAIT) {
+  // Those are internal requests, we do not need indirection because those objects are copies:
+  const kernel::activity::CommImpl* synchro1 = MC_get_comm(r1);
+  const kernel::activity::CommImpl* synchro2 = MC_get_comm(r2);
 
-    smx_rdv_t rdv =
-        r1->call ==
-        SIMCALL_COMM_ISEND ? simcall_comm_isend__get__rdv(r1) :
-        simcall_comm_irecv__get__rdv(r1);
+  if ((r1->call_ == SIMCALL_COMM_ISEND || r1->call_ == SIMCALL_COMM_IRECV) && r2->call_ == SIMCALL_COMM_WAIT) {
+    const kernel::activity::MailboxImpl* mbox = MC_get_mbox(r1);
 
-    if (rdv != synchro2->comm.rdv_cpy
+    if (mbox != synchro2->mbox_cpy
         && simcall_comm_wait__get__timeout(r2) <= 0)
-      return FALSE;
+      return false;
 
-    if ((r1->issuer != synchro2->comm.src_proc)
-        && (r1->issuer != synchro2->comm.dst_proc)
-        && simcall_comm_wait__get__timeout(r2) <= 0)
-      return FALSE;
+    if ((r1->issuer_ != synchro2->src_actor_.get()) && (r1->issuer_ != synchro2->dst_actor_.get()) &&
+        simcall_comm_wait__get__timeout(r2) <= 0)
+      return false;
 
-    if ((r1->call == SIMCALL_COMM_ISEND)
-        && (synchro2->comm.type == SIMIX_COMM_SEND)
-        && (synchro2->comm.src_buff !=
-            simcall_comm_isend__get__src_buff(r1))
-        && simcall_comm_wait__get__timeout(r2) <= 0)
-      return FALSE;
+    if ((r1->call_ == SIMCALL_COMM_ISEND) && (synchro2->type_ == kernel::activity::CommImpl::Type::SEND) &&
+        (synchro2->src_buff_ != simcall_comm_isend__get__src_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
+      return false;
 
-    if ((r1->call == SIMCALL_COMM_IRECV)
-        && (synchro2->comm.type == SIMIX_COMM_RECEIVE)
-        && (synchro2->comm.dst_buff != simcall_comm_irecv__get__dst_buff(r1))
-        && simcall_comm_wait__get__timeout(r2) <= 0)
-      return FALSE;
-  }
-
-  if ((r2->call == SIMCALL_COMM_ISEND || r2->call == SIMCALL_COMM_IRECV)
-      && r1->call == SIMCALL_COMM_WAIT) {
-
-    smx_rdv_t rdv =
-        r2->call ==
-        SIMCALL_COMM_ISEND ? simcall_comm_isend__get__rdv(r2) :
-        simcall_comm_irecv__get__rdv(r2);
-
-    if (rdv != synchro1->comm.rdv_cpy
-        && simcall_comm_wait__get__timeout(r1) <= 0)
-      return FALSE;
-
-    if ((r2->issuer != synchro1->comm.src_proc)
-        && (r2->issuer != synchro1->comm.dst_proc)
-        && simcall_comm_wait__get__timeout(r1) <= 0)
-      return FALSE;
-
-    if ((r2->call == SIMCALL_COMM_ISEND)
-        && (synchro1->comm.type == SIMIX_COMM_SEND)
-        && (synchro1->comm.src_buff !=
-            simcall_comm_isend__get__src_buff(r2))
-        && simcall_comm_wait__get__timeout(r1) <= 0)
-      return FALSE;
-
-    if ((r2->call == SIMCALL_COMM_IRECV)
-        && (synchro1->comm.type == SIMIX_COMM_RECEIVE)
-        && (synchro1->comm.dst_buff !=
-            simcall_comm_irecv__get__dst_buff(r2))
-        && simcall_comm_wait__get__timeout(r1) <= 0)
-      return FALSE;
+    if ((r1->call_ == SIMCALL_COMM_IRECV) && (synchro2->type_ == kernel::activity::CommImpl::Type::RECEIVE) &&
+        (synchro2->dst_buff_ != simcall_comm_irecv__get__dst_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
+      return false;
   }
 
-  /* FIXME: the following rule assumes that the result of the
-   * isend/irecv call is not stored in a buffer used in the
+  /* FIXME: the following rule assumes that the result of the isend/irecv call is not stored in a buffer used in the
    * test call. */
-  /*if(   (r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
-     &&  r2->call == SIMCALL_COMM_TEST)
-     return FALSE; */
-
-  /* FIXME: the following rule assumes that the result of the
-   * isend/irecv call is not stored in a buffer used in the
-   * test call.*/
-  /*if(   (r2->call == SIMCALL_COMM_ISEND || r2->call == SIMCALL_COMM_IRECV)
-     && r1->call == SIMCALL_COMM_TEST)
-     return FALSE; */
-
-  if (r1->call == SIMCALL_COMM_ISEND && r2->call == SIMCALL_COMM_ISEND
-      && simcall_comm_isend__get__rdv(r1) != simcall_comm_isend__get__rdv(r2))
-    return FALSE;
-
-  if (r1->call == SIMCALL_COMM_IRECV && r2->call == SIMCALL_COMM_IRECV
-      && simcall_comm_irecv__get__rdv(r1) != simcall_comm_irecv__get__rdv(r2))
-    return FALSE;
-
-  if (r1->call == SIMCALL_COMM_WAIT
-      && (r2->call == SIMCALL_COMM_WAIT || r2->call == SIMCALL_COMM_TEST)
-      && (synchro1->comm.src_proc == NULL || synchro1->comm.dst_proc == NULL))
-    return FALSE;
-
-  if (r2->call == SIMCALL_COMM_WAIT
-      && (r1->call == SIMCALL_COMM_WAIT || r1->call == SIMCALL_COMM_TEST)
-      && (synchro2->comm.src_proc == NULL || synchro2->comm.dst_proc == NULL))
-      return FALSE;
-
-  if (r1->call == SIMCALL_COMM_WAIT && r2->call == SIMCALL_COMM_WAIT
-      && synchro1->comm.src_buff == synchro2->comm.src_buff
-      && synchro2->comm.dst_buff == synchro2->comm.dst_buff)
-    return FALSE;
-
-  if (r1->call == SIMCALL_COMM_WAIT && r2->call == SIMCALL_COMM_WAIT
-      && synchro1->comm.src_buff != NULL
-      && synchro1->comm.dst_buff != NULL
-      && synchro2->comm.src_buff != NULL
-      && synchro2->comm.dst_buff != NULL
-      && synchro1->comm.dst_buff != synchro2->comm.src_buff
-      && synchro1->comm.dst_buff != synchro2->comm.dst_buff
-      && synchro2->comm.dst_buff != synchro1->comm.src_buff)
-    return FALSE;
-
-  if (r1->call == SIMCALL_COMM_TEST &&
-      (simcall_comm_test__get__comm(r1) == NULL
-       || synchro1->comm.src_buff == NULL
-       || synchro1->comm.dst_buff == NULL))
-    return FALSE;
-
-  if (r2->call == SIMCALL_COMM_TEST &&
-      (simcall_comm_test__get__comm(r2) == NULL
-       || synchro2->comm.src_buff == NULL
-       || synchro2->comm.dst_buff == NULL))
-    return FALSE;
-
-  if (r1->call == SIMCALL_COMM_TEST && r2->call == SIMCALL_COMM_WAIT
-      && synchro1->comm.src_buff == synchro2->comm.src_buff
-      && synchro1->comm.dst_buff == synchro2->comm.dst_buff)
-    return FALSE;
-
-  if (r1->call == SIMCALL_COMM_WAIT && r2->call == SIMCALL_COMM_TEST
-      && synchro1->comm.src_buff == synchro2->comm.src_buff
-      && synchro1->comm.dst_buff == synchro2->comm.dst_buff)
-    return FALSE;
-
-  if (r1->call == SIMCALL_COMM_WAIT && r2->call == SIMCALL_COMM_TEST
-      && synchro1->comm.src_buff != NULL
-      && synchro1->comm.dst_buff != NULL
-      && synchro2->comm.src_buff != NULL
-      && synchro2->comm.dst_buff != NULL
-      && synchro1->comm.dst_buff != synchro2->comm.src_buff
-      && synchro1->comm.dst_buff != synchro2->comm.dst_buff
-      && synchro2->comm.dst_buff != synchro1->comm.src_buff)
-    return FALSE;
-
-  if (r1->call == SIMCALL_COMM_TEST && r2->call == SIMCALL_COMM_WAIT
-      && synchro1->comm.src_buff != NULL
-      && synchro1->comm.dst_buff != NULL
-      && synchro2->comm.src_buff != NULL
-      && synchro2->comm.dst_buff != NULL
-      && synchro1->comm.dst_buff != synchro2->comm.src_buff
-      && synchro1->comm.dst_buff != synchro2->comm.dst_buff
-      && synchro2->comm.dst_buff != synchro1->comm.src_buff)
-    return FALSE;
-
-  return TRUE;
+#if 0
+  if((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
+      &&  r2->call == SIMCALL_COMM_TEST)
+    return false;
+#endif
+
+  if (r1->call_ == SIMCALL_COMM_WAIT && (r2->call_ == SIMCALL_COMM_WAIT || r2->call_ == SIMCALL_COMM_TEST) &&
+      (synchro1->src_actor_.get() == nullptr || synchro1->dst_actor_.get() == nullptr))
+    return false;
+
+  if (r1->call_ == SIMCALL_COMM_TEST &&
+      (simcall_comm_test__get__comm(r1) == nullptr || synchro1->src_buff_ == nullptr || synchro1->dst_buff_ == nullptr))
+    return false;
+
+  if (r1->call_ == SIMCALL_COMM_TEST && r2->call_ == SIMCALL_COMM_WAIT && synchro1->src_buff_ == synchro2->src_buff_ &&
+      synchro1->dst_buff_ == synchro2->dst_buff_)
+    return false;
+
+  if (r1->call_ == SIMCALL_COMM_WAIT && r2->call_ == SIMCALL_COMM_TEST && synchro1->src_buff_ != nullptr &&
+      synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr && synchro2->dst_buff_ != nullptr &&
+      synchro1->dst_buff_ != synchro2->src_buff_ && synchro1->dst_buff_ != synchro2->dst_buff_ &&
+      synchro2->dst_buff_ != synchro1->src_buff_)
+    return false;
+
+  return true;
 }
 
-static char *pointer_to_string(void *pointer)
+// Those are internal_req
+bool request_depend(smx_simcall_t req1, smx_simcall_t req2)
 {
+  if (req1->issuer_ == req2->issuer_)
+    return false;
+
+  /* Wait with timeout transitions are not considered by the independence theorem, thus we consider them as dependent with all other transitions */
+  if ((req1->call_ == SIMCALL_COMM_WAIT && simcall_comm_wait__get__timeout(req1) > 0) ||
+      (req2->call_ == SIMCALL_COMM_WAIT && simcall_comm_wait__get__timeout(req2) > 0))
+    return true;
+
+  if (req1->call_ != req2->call_)
+    return request_depend_asymmetric(req1, req2) && request_depend_asymmetric(req2, req1);
+
+  // Those are internal requests, we do not need indirection because those objects are copies:
+  const kernel::activity::CommImpl* synchro1 = MC_get_comm(req1);
+  const kernel::activity::CommImpl* synchro2 = MC_get_comm(req2);
+
+  switch (req1->call_) {
+    case SIMCALL_COMM_ISEND:
+      return simcall_comm_isend__get__mbox(req1) == simcall_comm_isend__get__mbox(req2);
+    case SIMCALL_COMM_IRECV:
+      return simcall_comm_irecv__get__mbox(req1) == simcall_comm_irecv__get__mbox(req2);
+    case SIMCALL_COMM_WAIT:
+      if (synchro1->src_buff_ == synchro2->src_buff_ && synchro1->dst_buff_ == synchro2->dst_buff_)
+        return false;
+      if (synchro1->src_buff_ != nullptr && synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr &&
+          synchro2->dst_buff_ != nullptr && synchro1->dst_buff_ != synchro2->src_buff_ &&
+          synchro1->dst_buff_ != synchro2->dst_buff_ && synchro2->dst_buff_ != synchro1->src_buff_)
+        return false;
+      return true;
+    default:
+      return true;
+  }
+}
+
+} // namespace mc
+} // namespace simgrid
 
+static char *pointer_to_string(void *pointer)
+{
   if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
     return bprintf("%p", pointer);
 
@@ -222,7 +158,6 @@ static char *pointer_to_string(void *pointer)
 
 static char *buff_size_to_string(size_t buff_size)
 {
-
   if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
     return bprintf("%zu", buff_size);
 
@@ -230,461 +165,363 @@ static char *buff_size_to_string(size_t buff_size)
 }
 
 
-char *MC_request_to_string(smx_simcall_t req, int value, e_mc_request_type_t request_type)
+std::string simgrid::mc::request_to_string(smx_simcall_t req, int value, simgrid::mc::RequestType request_type)
 {
+  xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
+
+  if (req->inspector_ != nullptr)
+    return req->inspector_->to_string();
+
   bool use_remote_comm = true;
   switch(request_type) {
-  case MC_REQUEST_SIMIX:
+  case simgrid::mc::RequestType::simix:
     use_remote_comm = true;
     break;
-  case MC_REQUEST_EXECUTED:
-  case MC_REQUEST_INTERNAL:
+  case simgrid::mc::RequestType::executed:
+  case simgrid::mc::RequestType::internal:
     use_remote_comm = false;
     break;
+  default:
+    THROW_IMPOSSIBLE;
   }
 
-  const char* type = NULL;
-  char *args = NULL;
-
-  smx_process_t issuer = MC_smx_simcall_get_issuer(req);
-
-  switch (req->call) {
-
-  case SIMCALL_COMM_ISEND: {
-    type = "iSend";
-    char* p = pointer_to_string(simcall_comm_isend__get__src_buff(req));
-    char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
-    if (issuer->smx_host)
-      args =
-          bprintf("src=(%lu)%s (%s), buff=%s, size=%s", issuer->pid,
-                  MC_smx_process_get_host_name(issuer),
-                  MC_smx_process_get_name(issuer),
-                  p, bs);
-    else
-      args =
-          bprintf("src=(%lu)%s, buff=%s, size=%s", issuer->pid,
-                  MC_smx_process_get_name(issuer), p, bs);
-    xbt_free(bs);
-    xbt_free(p);
-    break;
-  }
+  const char* type = nullptr;
+  char *args = nullptr;
 
-  case SIMCALL_COMM_IRECV: {
-    size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
-
-    // size_t size = size_pointer ? *size_pointer : 0;
-    size_t size = 0;
-    if (remote_size)
-      MC_process_read_simple(&mc_model_checker->process(), &size,
-        remote_size, sizeof(size));
-
-    type = "iRecv";
-    char* p = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
-    char* bs = buff_size_to_string(size);
-    if (issuer->smx_host)
-      args =
-          bprintf("dst=(%lu)%s (%s), buff=%s, size=%s", issuer->pid,
-                  MC_smx_process_get_host_name(issuer),
-                  MC_smx_process_get_name(issuer),
-                  p, bs);
-    else
-      args =
-          bprintf("dst=(%lu)%s, buff=%s, size=%s", issuer->pid,
-                  MC_smx_process_get_name(issuer),
-                  p, bs);
-    xbt_free(bs);
-    xbt_free(p);
-    break;
-  }
+  smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
 
-  case SIMCALL_COMM_WAIT: {
-    smx_synchro_t remote_act = simcall_comm_wait__get__comm(req);
-    char* p;
-    if (value == -1) {
-      type = "WaitTimeout";
-      p = pointer_to_string(remote_act);
-      args = bprintf("comm=%s", p);
-    } else {
-      type = "Wait";
-      p = pointer_to_string(remote_act);
-
-      s_smx_synchro_t synchro;
-      smx_synchro_t act;
-      if (use_remote_comm) {
-        MC_process_read_simple(&mc_model_checker->process(), &synchro,
-          remote_act, sizeof(synchro));
-        act = &synchro;
-      } else
-        act = remote_act;
+  switch (req->call_) {
+    case SIMCALL_COMM_ISEND: {
+      type     = "iSend";
+      char* p  = pointer_to_string(simcall_comm_isend__get__src_buff(req));
+      char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
+      if (issuer->get_host())
+        args = bprintf("src=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
+                       MC_smx_actor_get_name(issuer), p, bs);
+      else
+        args = bprintf("src=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
+      xbt_free(bs);
+      xbt_free(p);
+      break;
+    }
 
-      smx_process_t src_proc = MC_smx_resolve_process(act->comm.src_proc);
-      smx_process_t dst_proc = MC_smx_resolve_process(act->comm.dst_proc);
-      args = bprintf("comm=%s [(%lu)%s (%s)-> (%lu)%s (%s)]", p,
-                     src_proc ? src_proc->pid : 0,
-                     src_proc ? MC_smx_process_get_host_name(src_proc) : "",
-                     src_proc ? MC_smx_process_get_name(src_proc) : "",
-                     dst_proc ? dst_proc->pid : 0,
-                     dst_proc ? MC_smx_process_get_host_name(dst_proc) : "",
-                     dst_proc ? MC_smx_process_get_name(dst_proc) : "");
+    case SIMCALL_COMM_IRECV: {
+      size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
+      size_t size         = 0;
+      if (remote_size)
+        mc_model_checker->get_remote_simulation().read_bytes(&size, sizeof(size), remote(remote_size));
+
+      type     = "iRecv";
+      char* p  = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
+      char* bs = buff_size_to_string(size);
+      if (issuer->get_host())
+        args = bprintf("dst=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
+                       MC_smx_actor_get_name(issuer), p, bs);
+      else
+        args = bprintf("dst=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
+      xbt_free(bs);
+      xbt_free(p);
+      break;
     }
-    xbt_free(p);
-    break;
-  }
 
-  case SIMCALL_COMM_TEST: {
-    smx_synchro_t remote_act = simcall_comm_test__get__comm(req);
-    s_smx_synchro_t synchro;
-      smx_synchro_t act;
+    case SIMCALL_COMM_WAIT: {
+      simgrid::kernel::activity::CommImpl* remote_act =
+          static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(req));
+      char* p;
+      if (value == -1) {
+        type = "WaitTimeout";
+        p    = pointer_to_string(remote_act);
+        args = bprintf("comm=%s", p);
+      } else {
+        type = "Wait";
+        p    = pointer_to_string(remote_act);
+
+        simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
+        const simgrid::kernel::activity::CommImpl* act;
+        if (use_remote_comm) {
+          mc_model_checker->get_remote_simulation().read(
+              temp_synchro, remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
+          act = temp_synchro.get_buffer();
+        } else
+          act = remote_act;
+
+        smx_actor_t src_proc =
+            mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
+        smx_actor_t dst_proc =
+            mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
+        args                 = bprintf("comm=%s [(%ld)%s (%s)-> (%ld)%s (%s)]", p, src_proc ? src_proc->get_pid() : 0,
+                       src_proc ? MC_smx_actor_get_host_name(src_proc) : "",
+                       src_proc ? MC_smx_actor_get_name(src_proc) : "", dst_proc ? dst_proc->get_pid() : 0,
+                       dst_proc ? MC_smx_actor_get_host_name(dst_proc) : "",
+                       dst_proc ? MC_smx_actor_get_name(dst_proc) : "");
+      }
+      xbt_free(p);
+      break;
+    }
+
+    case SIMCALL_COMM_TEST: {
+      simgrid::kernel::activity::CommImpl* remote_act =
+          static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_test__getraw__comm(req));
+      simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
+      const simgrid::kernel::activity::CommImpl* act;
       if (use_remote_comm) {
-        MC_process_read_simple(&mc_model_checker->process(), &synchro,
-          remote_act, sizeof(synchro));
-        act = &synchro;
+        mc_model_checker->get_remote_simulation().read(
+            temp_synchro, remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
+        act = temp_synchro.get_buffer();
       } else
         act = remote_act;
 
-    char* p;
-    if (act->comm.src_proc == NULL || act->comm.dst_proc == NULL) {
-      type = "Test FALSE";
-      p = pointer_to_string(remote_act);
-      args = bprintf("comm=%s", p);
-    } else {
-      type = "Test TRUE";
-      p = pointer_to_string(remote_act);
-
-      smx_process_t src_proc = MC_smx_resolve_process(act->comm.src_proc);
-      smx_process_t dst_proc = MC_smx_resolve_process(act->comm.dst_proc);
-      args = bprintf("comm=%s [(%lu)%s (%s) -> (%lu)%s (%s)]", p,
-                     src_proc->pid,
-                     MC_smx_process_get_name(src_proc),
-                     MC_smx_process_get_host_name(src_proc),
-                     dst_proc->pid,
-                     MC_smx_process_get_name(dst_proc),
-                     MC_smx_process_get_host_name(dst_proc));
-    }
-    xbt_free(p);
-    break;
-  }
-
-  case SIMCALL_COMM_WAITANY: {
-    type = "WaitAny";
-    s_xbt_dynar_t comms;
-    MC_process_read_simple(&mc_model_checker->process(),
-      &comms,  simcall_comm_waitany__get__comms(req), sizeof(comms));
-    if (!xbt_dynar_is_empty(&comms)) {
-      smx_synchro_t remote_sync;
-      MC_process_read_dynar_element(&mc_model_checker->process(),
-        &remote_sync, simcall_comm_waitany__get__comms(req), value,
-        sizeof(remote_sync));
-      char* p = pointer_to_string(remote_sync);
-      args = bprintf("comm=%s (%d of %lu)",
-        p, value + 1, xbt_dynar_length(&comms));
+      char* p;
+      if (act->src_actor_.get() == nullptr || act->dst_actor_.get() == nullptr) {
+        type = "Test FALSE";
+        p    = pointer_to_string(remote_act);
+        args = bprintf("comm=%s", p);
+      } else {
+        type = "Test TRUE";
+        p    = pointer_to_string(remote_act);
+
+        smx_actor_t src_proc =
+            mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
+        smx_actor_t dst_proc =
+            mc_model_checker->get_remote_simulation().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
+        args                 = bprintf("comm=%s [(%ld)%s (%s) -> (%ld)%s (%s)]", p, src_proc->get_pid(),
+                       MC_smx_actor_get_name(src_proc), MC_smx_actor_get_host_name(src_proc), dst_proc->get_pid(),
+                       MC_smx_actor_get_name(dst_proc), MC_smx_actor_get_host_name(dst_proc));
+      }
       xbt_free(p);
-    } else {
-      args = bprintf("comm at idx %d", value);
+      break;
     }
-    break;
-  }
 
-  case SIMCALL_COMM_TESTANY:
-    if (value == -1) {
-      type = "TestAny FALSE";
-      args = xbt_strdup("-");
-    } else {
-      type = "TestAny";
-      args =
-          bprintf("(%d of %lu)", value + 1,
-                  MC_process_read_dynar_length(&mc_model_checker->process(),
-                    simcall_comm_testany__get__comms(req)));
+    case SIMCALL_COMM_WAITANY: {
+      type         = "WaitAny";
+      size_t count = simcall_comm_waitany__get__count(req);
+      if (count > 0) {
+        simgrid::kernel::activity::CommImpl* remote_sync;
+        remote_sync =
+            mc_model_checker->get_remote_simulation().read(remote(simcall_comm_waitany__get__comms(req) + value));
+        char* p     = pointer_to_string(remote_sync);
+        args        = bprintf("comm=%s (%d of %zu)", p, value + 1, count);
+        xbt_free(p);
+      } else
+        args = bprintf("comm at idx %d", value);
+      break;
     }
-    break;
-
-  case SIMCALL_MUTEX_LOCK: {
-    type = "Mutex LOCK";
-
-    s_smx_mutex_t mutex;
-    MC_process_read_simple(&mc_model_checker->process(), &mutex,
-      simcall_mutex_lock__get__mutex(req), sizeof(mutex));
-    s_xbt_swag_t mutex_sleeping;
-    MC_process_read_simple(&mc_model_checker->process(), &mutex_sleeping,
-      mutex.sleeping, sizeof(mutex_sleeping));
 
-    args = bprintf("locked = %d, owner = %d, sleeping = %d",
-      mutex.locked,
-      mutex.owner != NULL ? (int) MC_smx_resolve_process(mutex.owner)->pid : -1,
-      mutex_sleeping.count);
-    break;
-  }
-
-  case SIMCALL_MC_SNAPSHOT:
-    type = "MC_SNAPSHOT";
-    args = NULL;
-    break;
-
-  case SIMCALL_MC_COMPARE_SNAPSHOTS:
-    type = "MC_COMPARE_SNAPSHOTS";
-    args = NULL;
-    break;
+    case SIMCALL_COMM_TESTANY:
+      if (value == -1) {
+        type = "TestAny FALSE";
+        args = xbt_strdup("-");
+      } else {
+        type = "TestAny";
+        args = bprintf("(%d of %zu)", value + 1, simcall_comm_testany__get__count(req));
+      }
+      break;
+
+    case SIMCALL_MUTEX_TRYLOCK:
+    case SIMCALL_MUTEX_LOCK: {
+      if (req->call_ == SIMCALL_MUTEX_LOCK)
+        type = "Mutex LOCK";
+      else
+        type = "Mutex TRYLOCK";
+
+      simgrid::mc::Remote<simgrid::kernel::activity::MutexImpl> mutex;
+      mc_model_checker->get_remote_simulation().read_bytes(mutex.get_buffer(), sizeof(mutex),
+                                                           remote(req->call_ == SIMCALL_MUTEX_LOCK
+                                                                      ? simcall_mutex_lock__get__mutex(req)
+                                                                      : simcall_mutex_trylock__get__mutex(req)));
+      args = bprintf("locked = %d, owner = %d, sleeping = n/a", mutex.get_buffer()->is_locked(),
+                     mutex.get_buffer()->get_owner() != nullptr
+                         ? (int)mc_model_checker->get_remote_simulation()
+                               .resolve_actor(simgrid::mc::remote(mutex.get_buffer()->get_owner()))
+                               ->get_pid()
+                         : -1);
+      break;
+    }
 
-  case SIMCALL_MC_RANDOM:
-    type = "MC_RANDOM";
-    args = bprintf("%d", value);
-    break;
+    case SIMCALL_MC_RANDOM:
+      type = "MC_RANDOM";
+      args = bprintf("%d", value);
+      break;
 
-  default:
-    THROW_UNIMPLEMENTED;
+    default:
+      type = SIMIX_simcall_name(req->call_);
+      args = bprintf("??");
+      break;
   }
 
-  char* str;
-  if (args != NULL) {
-    str =
-        bprintf("[(%lu)%s (%s)] %s(%s)", issuer->pid,
-                MC_smx_process_get_host_name(issuer),
-                MC_smx_process_get_name(issuer),
-                type, args);
-  } else {
-    str =
-        bprintf("[(%lu)%s (%s)] %s ", issuer->pid,
-                MC_smx_process_get_host_name(issuer),
-                MC_smx_process_get_name(issuer),
-                type);
-  }
+  std::string str;
+  if (args != nullptr)
+    str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s(%s)", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
+                                      MC_smx_actor_get_name(issuer), type, args);
+  else
+    str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s ", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
+                                      MC_smx_actor_get_name(issuer), type);
   xbt_free(args);
   return str;
 }
 
-unsigned int MC_request_testany_fail(smx_simcall_t req)
-{
-  // Remote xbt_dynar_foreach on simcall_comm_testany__get__comms(req).
-
-  // Read the dynar:
-  s_xbt_dynar_t comms;
-  MC_process_read_simple(&mc_model_checker->process(),
-    &comms, simcall_comm_testany__get__comms(req), sizeof(comms));
-
-  // Read ther dynar buffer:
-  size_t buffer_size = comms.elmsize * comms.used;
-  char buffer[buffer_size];
-  MC_process_read_simple(&mc_model_checker->process(),
-    buffer, comms.data, buffer_size);
-
-  // Iterate over the elements:
-  assert(comms.elmsize == sizeof(smx_synchro_t));
-  unsigned cursor;
-  for (cursor=0; cursor != comms.used; ++cursor) {
-
-    // Get the element:
-    smx_synchro_t remote_action = NULL;
-    memcpy(&remote_action, buffer + comms.elmsize * cursor, sizeof(remote_action));
-
-    // Dereference the pointer:
-    s_smx_synchro_t action;
-    MC_process_read_simple(&mc_model_checker->process(),
-      &action, remote_action, sizeof(action));
-
-    // Finally so something useful about it:
-    if (action.comm.src_proc && action.comm.dst_proc)
-      return FALSE;
-  }
+namespace simgrid {
+namespace mc {
 
-  return TRUE;
-}
-
-int MC_request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
+bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
 {
-  smx_synchro_t remote_act = NULL;
-  switch (req->call) {
-
-  case SIMCALL_COMM_WAIT:
-    /* FIXME: check also that src and dst processes are not suspended */
-    remote_act = simcall_comm_wait__get__comm(req);
-    break;
-
-  case SIMCALL_COMM_WAITANY: {
-    MC_process_read_dynar_element(
-      &mc_model_checker->process(), &remote_act, simcall_comm_waitany__get__comms(req),
-      idx, sizeof(remote_act));
-    }
-    break;
-
-  case SIMCALL_COMM_TESTANY: {
-    MC_process_read_dynar_element(
-      &mc_model_checker->process(), &remote_act, simcall_comm_testany__get__comms(req),
-      idx, sizeof(remote_act));
-    }
-    break;
-
-  default:
-    return TRUE;
+  kernel::activity::CommImpl* remote_act = nullptr;
+  switch (req->call_) {
+    case SIMCALL_COMM_WAIT:
+      /* FIXME: check also that src and dst processes are not suspended */
+      remote_act = simcall_comm_wait__getraw__comm(req);
+      break;
+
+    case SIMCALL_COMM_WAITANY:
+      remote_act = mc_model_checker->get_remote_simulation().read(remote(simcall_comm_testany__get__comms(req) + idx));
+      break;
+
+    case SIMCALL_COMM_TESTANY:
+      remote_act = mc_model_checker->get_remote_simulation().read(remote(simcall_comm_testany__get__comms(req) + idx));
+      break;
+
+    default:
+      return true;
   }
 
-  s_smx_synchro_t synchro;
-  MC_process_read_simple(&mc_model_checker->process(),
-    &synchro, remote_act, sizeof(synchro));
-  return synchro.comm.src_proc && synchro.comm.dst_proc;
+  Remote<kernel::activity::CommImpl> temp_comm;
+  mc_model_checker->get_remote_simulation().read(temp_comm, remote(remote_act));
+  const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
+  return comm->src_actor_.get() && comm->dst_actor_.get();
 }
 
-int MC_process_is_enabled(smx_process_t process)
+static const char* colors[] = {
+    "blue",       "red",    "green3",      "goldenrod", "brown",     "purple", "magenta",
+    "turquoise4", "gray25", "forestgreen", "hotpink",   "lightblue", "tan",
+};
+
+static inline const char* get_color(int id)
 {
-  return MC_request_is_enabled(&process->simcall);
+  return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
 }
 
-char *MC_request_get_dot_output(smx_simcall_t req, int value)
+std::string request_get_dot_output(smx_simcall_t req, int value)
 {
-  char *label = NULL;
-
-  const smx_process_t issuer = MC_smx_simcall_get_issuer(req);
-
-  switch (req->call) {
-  case SIMCALL_COMM_ISEND:
-    if (issuer->smx_host)
-      label =
-          bprintf("[(%lu)%s] iSend", issuer->pid,
-                  MC_smx_process_get_host_name(issuer));
-    else
-      label = bprintf("[(%lu)] iSend", issuer->pid);
-    break;
+  const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
+  const char* color        = get_color(issuer->get_pid() - 1);
 
-  case SIMCALL_COMM_IRECV:
-    if (issuer->smx_host)
-      label =
-          bprintf("[(%lu)%s] iRecv", issuer->pid,
-                  MC_smx_process_get_host_name(issuer));
-    else
-      label = bprintf("[(%lu)] iRecv", issuer->pid);
-    break;
+  if (req->inspector_ != nullptr)
+    return simgrid::xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s",
+                                       req->inspector_->dot_label().c_str(), color, color);
 
-  case SIMCALL_COMM_WAIT: {
-    if (value == -1) {
-      if (issuer->smx_host)
-        label =
-            bprintf("[(%lu)%s] WaitTimeout", issuer->pid,
-                    MC_smx_process_get_host_name(issuer));
-      else
-        label = bprintf("[(%lu)] WaitTimeout", issuer->pid);
-    } else {
-      smx_synchro_t remote_act = simcall_comm_wait__get__comm(req);
-      s_smx_synchro_t synchro;
-      MC_process_read_simple(&mc_model_checker->process(), &synchro,
-        remote_act, sizeof(synchro));
-
-      smx_process_t src_proc = MC_smx_resolve_process(synchro.comm.src_proc);
-      smx_process_t dst_proc = MC_smx_resolve_process(synchro.comm.dst_proc);
-      if (issuer->smx_host)
-        label =
-            bprintf("[(%lu)%s] Wait [(%lu)->(%lu)]", issuer->pid,
-                    MC_smx_process_get_host_name(issuer),
-                    src_proc ? src_proc->pid : 0,
-                    dst_proc ? dst_proc->pid : 0);
-      else
-        label =
-            bprintf("[(%lu)] Wait [(%lu)->(%lu)]", issuer->pid,
-                    src_proc ? src_proc->pid : 0,
-                    dst_proc ? dst_proc->pid : 0);
-    }
-    break;
-  }
+  std::string label;
 
-  case SIMCALL_COMM_TEST: {
-    smx_synchro_t remote_act = simcall_comm_test__get__comm(req);
-    s_smx_synchro_t synchro;
-    MC_process_read_simple(&mc_model_checker->process(), &synchro,
-      remote_act, sizeof(synchro));
-    if (synchro.comm.src_proc == NULL || synchro.comm.dst_proc == NULL) {
-      if (issuer->smx_host)
-        label =
-            bprintf("[(%lu)%s] Test FALSE", issuer->pid,
-                    MC_smx_process_get_host_name(issuer));
+  switch (req->call_) {
+    case SIMCALL_COMM_ISEND:
+      if (issuer->get_host())
+        label = xbt::string_printf("[(%ld)%s] iSend", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
       else
-        label = bprintf("[(%lu)] Test FALSE", issuer->pid);
-    } else {
-      if (issuer->smx_host)
-        label =
-            bprintf("[(%lu)%s] Test TRUE", issuer->pid,
-                    MC_smx_process_get_host_name(issuer));
+        label = bprintf("[(%ld)] iSend", issuer->get_pid());
+      break;
+
+    case SIMCALL_COMM_IRECV:
+      if (issuer->get_host())
+        label = xbt::string_printf("[(%ld)%s] iRecv", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
       else
-        label = bprintf("[(%lu)] Test TRUE", issuer->pid);
+        label = xbt::string_printf("[(%ld)] iRecv", issuer->get_pid());
+      break;
+
+    case SIMCALL_COMM_WAIT:
+      if (value == -1) {
+        if (issuer->get_host())
+          label = xbt::string_printf("[(%ld)%s] WaitTimeout", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
+        else
+          label = xbt::string_printf("[(%ld)] WaitTimeout", issuer->get_pid());
+      } else {
+        kernel::activity::ActivityImpl* remote_act = simcall_comm_wait__getraw__comm(req);
+        Remote<kernel::activity::CommImpl> temp_comm;
+        mc_model_checker->get_remote_simulation().read(temp_comm,
+                                                       remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
+        const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
+
+        const kernel::actor::ActorImpl* src_proc =
+            mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->src_actor_.get()));
+        const kernel::actor::ActorImpl* dst_proc =
+            mc_model_checker->get_remote_simulation().resolve_actor(mc::remote(comm->dst_actor_.get()));
+        if (issuer->get_host())
+          label =
+              xbt::string_printf("[(%ld)%s] Wait [(%ld)->(%ld)]", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
+                                 src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
+        else
+          label = xbt::string_printf("[(%ld)] Wait [(%ld)->(%ld)]", issuer->get_pid(),
+                                     src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
+      }
+      break;
+
+    case SIMCALL_COMM_TEST: {
+      kernel::activity::ActivityImpl* remote_act = simcall_comm_test__getraw__comm(req);
+      Remote<simgrid::kernel::activity::CommImpl> temp_comm;
+      mc_model_checker->get_remote_simulation().read(temp_comm,
+                                                     remote(static_cast<kernel::activity::CommImpl*>(remote_act)));
+      const kernel::activity::CommImpl* comm = temp_comm.get_buffer();
+      if (comm->src_actor_.get() == nullptr || comm->dst_actor_.get() == nullptr) {
+        if (issuer->get_host())
+          label = xbt::string_printf("[(%ld)%s] Test FALSE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
+        else
+          label = bprintf("[(%ld)] Test FALSE", issuer->get_pid());
+      } else {
+        if (issuer->get_host())
+          label = xbt::string_printf("[(%ld)%s] Test TRUE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
+        else
+          label = xbt::string_printf("[(%ld)] Test TRUE", issuer->get_pid());
+      }
+      break;
     }
-    break;
-  }
-
-  case SIMCALL_COMM_WAITANY: {
-    unsigned long comms_size = MC_process_read_dynar_length(
-      &mc_model_checker->process(), simcall_comm_waitany__get__comms(req));
-    if (issuer->smx_host)
-      label =
-          bprintf("[(%lu)%s] WaitAny [%d of %lu]", issuer->pid,
-                  MC_smx_process_get_host_name(issuer), value + 1,
-                  comms_size);
-    else
-      label =
-          bprintf("[(%lu)] WaitAny [%d of %lu]", issuer->pid, value + 1,
-                  comms_size);
-    break;
-  }
 
-  case SIMCALL_COMM_TESTANY:
-    if (value == -1) {
-      if (issuer->smx_host)
-        label =
-            bprintf("[(%lu)%s] TestAny FALSE", issuer->pid,
-                    MC_smx_process_get_host_name(issuer));
-      else
-        label = bprintf("[(%lu)] TestAny FALSE", issuer->pid);
-    } else {
-      if (issuer->smx_host)
-        label =
-            bprintf("[(%lu)%s] TestAny TRUE [%d of %lu]", issuer->pid,
-                    MC_smx_process_get_host_name(issuer), value + 1,
-                    xbt_dynar_length(simcall_comm_testany__get__comms(req)));
+    case SIMCALL_COMM_WAITANY: {
+      size_t comms_size = simcall_comm_waitany__get__count(req);
+      if (issuer->get_host())
+        label = xbt::string_printf("[(%ld)%s] WaitAny [%d of %zu]", issuer->get_pid(),
+                                   MC_smx_actor_get_host_name(issuer), value + 1, comms_size);
       else
-        label =
-            bprintf("[(%lu)] TestAny TRUE [%d of %lu]", issuer->pid,
-                    value + 1,
-                    xbt_dynar_length(simcall_comm_testany__get__comms(req)));
+        label = xbt::string_printf("[(%ld)] WaitAny [%d of %zu]", issuer->get_pid(), value + 1, comms_size);
+      break;
     }
-    break;
-
-  case SIMCALL_MUTEX_LOCK:
-    label = bprintf("[(%lu)] Mutex LOCK", req->issuer->pid);
-    break;
-
-  case SIMCALL_MC_RANDOM:
-    if (issuer->smx_host)
-      label =
-          bprintf("[(%lu)%s] MC_RANDOM (%d)", issuer->pid,
-                  MC_smx_process_get_host_name(issuer), value);
-    else
-      label = bprintf("[(%lu)] MC_RANDOM (%d)", issuer->pid, value);
-    break;
-
-  case SIMCALL_MC_SNAPSHOT:
-    if (issuer->smx_host)
-      label =
-          bprintf("[(%lu)%s] MC_SNAPSHOT", issuer->pid,
-                  MC_smx_process_get_host_name(issuer));
-    else
-      label = bprintf("[(%lu)] MC_SNAPSHOT", issuer->pid);
-    break;
 
-  case SIMCALL_MC_COMPARE_SNAPSHOTS:
-    if (issuer->smx_host)
-      label =
-          bprintf("[(%lu)%s] MC_COMPARE_SNAPSHOTS", issuer->pid,
-                  MC_smx_process_get_host_name(issuer));
-    else
-      label = bprintf("[(%lu)] MC_COMPARE_SNAPSHOTS", issuer->pid);
-    break;
+    case SIMCALL_COMM_TESTANY:
+      if (value == -1) {
+        if (issuer->get_host())
+          label = xbt::string_printf("[(%ld)%s] TestAny FALSE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
+        else
+          label = xbt::string_printf("[(%ld)] TestAny FALSE", issuer->get_pid());
+      } else {
+        if (issuer->get_host())
+          label =
+              xbt::string_printf("[(%ld)%s] TestAny TRUE [%d of %lu]", issuer->get_pid(),
+                                 MC_smx_actor_get_host_name(issuer), value + 1, simcall_comm_testany__get__count(req));
+        else
+          label = xbt::string_printf("[(%ld)] TestAny TRUE [%d of %lu]", issuer->get_pid(), value + 1,
+                                     simcall_comm_testany__get__count(req));
+      }
+      break;
+
+    case SIMCALL_MUTEX_TRYLOCK:
+      label = xbt::string_printf("[(%ld)] Mutex TRYLOCK", issuer->get_pid());
+      break;
+
+    case SIMCALL_MUTEX_LOCK:
+      label = xbt::string_printf("[(%ld)] Mutex LOCK", issuer->get_pid());
+      break;
+
+    case SIMCALL_MC_RANDOM:
+      if (issuer->get_host())
+        label = xbt::string_printf("[(%ld)%s] MC_RANDOM (%d)", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
+                                   value);
+      else
+        label = xbt::string_printf("[(%ld)] MC_RANDOM (%d)", issuer->get_pid(), value);
+      break;
 
-  default:
-    THROW_UNIMPLEMENTED;
+    default:
+      THROW_UNIMPLEMENTED;
   }
 
-  char* str =
-      bprintf("label = \"%s\", color = %s, fontcolor = %s", label,
-              colors[issuer->pid - 1], colors[issuer->pid - 1]);
-  xbt_free(label);
-  return str;
-
+  return xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s", label.c_str(), color, color);
 }
 
-}
+} // namespace mc
+} // namespace simgrid