X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/ad8867933b08821b82e8ba42d807445f18b2764d..376ad7f21746a49106a06c33fe3e27b27e87a677:/src/mc/mc_request.c

diff --git a/src/mc/mc_request.c b/src/mc/mc_request.c
index 2e8a8149bc..03089e4d95 100644
--- a/src/mc/mc_request.c
+++ b/src/mc/mc_request.c
@@ -1,66 +1,121 @@
-/* Copyright (c) 2008-2013 Da SimGrid Team. All rights reserved.            */
+/* Copyright (c) 2008-2014. 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 "mc_request.h"
+#include "mc_safety.h"
 #include "mc_private.h"
+#include "mc_smx.h"
 
 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);
+static char *pointer_to_string(void *pointer);
+static char *buff_size_to_string(size_t size);
 
-int MC_request_depend(smx_simcall_t r1, smx_simcall_t r2) {
-  if(mc_reduce_kind == e_mc_reduce_none)
+int MC_request_depend(smx_simcall_t r1, smx_simcall_t r2)
+{
+  if (mc_reduce_kind == e_mc_reduce_none)
     return TRUE;
 
   if (r1->issuer == r2->issuer)
-      return FALSE;
+    return FALSE;
 
-  if(r1->call == SIMCALL_COMM_ISEND && r2->call == SIMCALL_COMM_IRECV)
+  /* 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;
+
+  if (r1->call == SIMCALL_COMM_ISEND && r2->call == SIMCALL_COMM_IRECV)
     return FALSE;
 
-  if(r1->call == SIMCALL_COMM_IRECV && r2->call == SIMCALL_COMM_ISEND)
+  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){
+  // Read object from MCed memory:
+  s_smx_synchro_t synchro1, synchro2;
+  if (r1->call == SIMCALL_COMM_WAIT) {
+    MC_process_read_simple(&mc_model_checker->process, &synchro1,
+      simcall_comm_wait__get__comm(r1), sizeof(synchro1));
+  }
+  if (r2->call == SIMCALL_COMM_WAIT) {
+    MC_process_read_simple(&mc_model_checker->process, &synchro2,
+      simcall_comm_wait__get__comm(r2), sizeof(synchro2));
+  }
+  if (r1->call == SIMCALL_COMM_TEST) {
+    MC_process_read_simple(&mc_model_checker->process, &synchro1,
+      simcall_comm_test__get__comm(r1), sizeof(synchro1));
+  }
+  if (r2->call == SIMCALL_COMM_TEST) {
+    MC_process_read_simple(&mc_model_checker->process, &synchro2,
+      simcall_comm_test__get__comm(r2), sizeof(synchro2));
+  }
+
+  if ((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
+      && r2->call == SIMCALL_COMM_WAIT) {
+
+    smx_rdv_t rdv =
+        r1->call ==
+        SIMCALL_COMM_ISEND ? simcall_comm_isend__get__rdv(r1) :
+        simcall_comm_irecv__get__rdv(r1);
 
-    smx_rdv_t rdv = r1->call == SIMCALL_COMM_ISEND ? simcall_comm_isend__get__rdv(r1) : simcall_comm_irecv__get__rdv(r1);
+    // FIXME, remote access to comm object
 
-    if(rdv != simcall_comm_wait__get__comm(r2)->comm.rdv_cpy && simcall_comm_wait__get__timeout(r2) <= 0)
+    if (rdv != synchro2.comm.rdv_cpy
+        && simcall_comm_wait__get__timeout(r2) <= 0)
       return FALSE;
 
-    if((r1->issuer != simcall_comm_wait__get__comm(r2)->comm.src_proc) && (r1->issuer != simcall_comm_wait__get__comm(r2)->comm.dst_proc) && simcall_comm_wait__get__timeout(r2) <= 0)
+    if ((r1->issuer != synchro2.comm.src_proc)
+        && (r1->issuer != synchro2.comm.dst_proc)
+        && simcall_comm_wait__get__timeout(r2) <= 0)
       return FALSE;
 
-    if((r1->call == SIMCALL_COMM_ISEND) && (simcall_comm_wait__get__comm(r2)->comm.type == SIMIX_COMM_SEND) 
-       && (simcall_comm_wait__get__comm(r2)->comm.src_buff != simcall_comm_isend__get__src_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
+    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_IRECV) && (simcall_comm_wait__get__comm(r2)->comm.type == SIMIX_COMM_RECEIVE) 
-       && (simcall_comm_wait__get__comm(r2)->comm.dst_buff != simcall_comm_irecv__get__dst_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
+    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){
+  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);
+    smx_rdv_t rdv =
+        r2->call ==
+        SIMCALL_COMM_ISEND ? simcall_comm_isend__get__rdv(r2) :
+        simcall_comm_irecv__get__rdv(r2);
 
-    if(rdv != simcall_comm_wait__get__comm(r1)->comm.rdv_cpy && simcall_comm_wait__get__timeout(r1) <= 0)
+    if (rdv != synchro1.comm.rdv_cpy
+        && simcall_comm_wait__get__timeout(r1) <= 0)
       return FALSE;
 
-    if((r2->issuer != simcall_comm_wait__get__comm(r1)->comm.src_proc) && (r2->issuer != simcall_comm_wait__get__comm(r1)->comm.dst_proc) && 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) && (simcall_comm_wait__get__comm(r1)->comm.type == SIMIX_COMM_SEND) 
-       && (simcall_comm_wait__get__comm(r1)->comm.src_buff != simcall_comm_isend__get__src_buff(r2)) && simcall_comm_wait__get__timeout(r1) <= 0)
+    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) && (simcall_comm_wait__get__comm(r1)->comm.type == SIMIX_COMM_RECEIVE) 
-       && (simcall_comm_wait__get__comm(r1)->comm.dst_buff != simcall_comm_irecv__get__dst_buff(r2)) && simcall_comm_wait__get__timeout(r1) <= 0)
+    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;
   }
 
@@ -68,96 +123,96 @@ int MC_request_depend(smx_simcall_t r1, smx_simcall_t r2) {
    * 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;*/
+     &&  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;*/
+     && 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))
+  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))
+  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)
-     && (simcall_comm_wait__get__comm(r1)->comm.src_proc == NULL
-         || simcall_comm_wait__get__comm(r1)->comm.dst_proc == NULL))
+  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)
-     && (simcall_comm_wait__get__comm(r2)->comm.src_proc == NULL
-         || simcall_comm_wait__get__comm(r2)->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
-     && simcall_comm_wait__get__comm(r1)->comm.src_buff == simcall_comm_wait__get__comm(r2)->comm.src_buff
-     && simcall_comm_wait__get__comm(r1)->comm.dst_buff == simcall_comm_wait__get__comm(r2)->comm.dst_buff)
+  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
-      && simcall_comm_wait__get__comm(r1)->comm.src_buff != NULL
-      && simcall_comm_wait__get__comm(r1)->comm.dst_buff != NULL
-      && simcall_comm_wait__get__comm(r2)->comm.src_buff != NULL
-      && simcall_comm_wait__get__comm(r2)->comm.dst_buff != NULL
-      && simcall_comm_wait__get__comm(r1)->comm.dst_buff != simcall_comm_wait__get__comm(r2)->comm.src_buff
-      && simcall_comm_wait__get__comm(r1)->comm.dst_buff != simcall_comm_wait__get__comm(r2)->comm.dst_buff
-      && simcall_comm_wait__get__comm(r2)->comm.dst_buff != simcall_comm_wait__get__comm(r1)->comm.src_buff)
+      && 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
-      || simcall_comm_test__get__comm(r1)->comm.src_buff == NULL
-      || simcall_comm_test__get__comm(r1)->comm.dst_buff == NULL))
+  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
-      || simcall_comm_test__get__comm(r2)->comm.src_buff == NULL
-      || simcall_comm_test__get__comm(r2)->comm.dst_buff == NULL))
+  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
-     && simcall_comm_test__get__comm(r1)->comm.src_buff == simcall_comm_wait__get__comm(r2)->comm.src_buff
-     && simcall_comm_test__get__comm(r1)->comm.dst_buff == simcall_comm_wait__get__comm(r2)->comm.dst_buff)
+  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
-     && simcall_comm_wait__get__comm(r1)->comm.src_buff == simcall_comm_test__get__comm(r2)->comm.src_buff
-     && simcall_comm_wait__get__comm(r1)->comm.dst_buff == simcall_comm_test__get__comm(r2)->comm.dst_buff)
+  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
-      && simcall_comm_wait__get__comm(r1)->comm.src_buff != NULL
-      && simcall_comm_wait__get__comm(r1)->comm.dst_buff != NULL
-      && simcall_comm_test__get__comm(r2)->comm.src_buff != NULL
-      && simcall_comm_test__get__comm(r2)->comm.dst_buff != NULL
-      && simcall_comm_wait__get__comm(r1)->comm.dst_buff != simcall_comm_test__get__comm(r2)->comm.src_buff
-      && simcall_comm_wait__get__comm(r1)->comm.dst_buff != simcall_comm_test__get__comm(r2)->comm.dst_buff
-      && simcall_comm_test__get__comm(r2)->comm.dst_buff != simcall_comm_wait__get__comm(r1)->comm.src_buff)
+      && 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
-      && simcall_comm_test__get__comm(r1)->comm.src_buff != NULL
-      && simcall_comm_test__get__comm(r1)->comm.dst_buff != NULL
-      && simcall_comm_wait__get__comm(r2)->comm.src_buff != NULL
-      && simcall_comm_wait__get__comm(r2)->comm.dst_buff != NULL
-      && simcall_comm_test__get__comm(r1)->comm.dst_buff != simcall_comm_wait__get__comm(r2)->comm.src_buff
-      && simcall_comm_test__get__comm(r1)->comm.dst_buff != simcall_comm_wait__get__comm(r2)->comm.dst_buff
-      && simcall_comm_wait__get__comm(r2)->comm.dst_buff != simcall_comm_test__get__comm(r1)->comm.src_buff)
+      && 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;
 }
 
-static char* pointer_to_string(void* pointer) {
+static char *pointer_to_string(void *pointer)
+{
 
   if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
     return bprintf("%p", pointer);
@@ -165,7 +220,8 @@ static char* pointer_to_string(void* pointer) {
   return xbt_strdup("(verbose only)");
 }
 
-static char* buff_size_to_string(size_t buff_size) {
+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);
@@ -176,96 +232,179 @@ static char* buff_size_to_string(size_t buff_size) {
 
 char *MC_request_to_string(smx_simcall_t req, int value)
 {
-  char *type = NULL, *args = NULL, *str = NULL, *p = NULL, *bs = NULL;
-  smx_action_t act = NULL;
-  size_t size = 0;
-
-  switch(req->call){
-    case SIMCALL_COMM_ISEND:
-    type = xbt_strdup("iSend");
-    p = pointer_to_string(simcall_comm_isend__get__src_buff(req));
-    bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
-    if(req->issuer->smx_host)
-      args = bprintf("src=(%lu)%s (%s), buff=%s, size=%s", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host), req->issuer->name, p, bs);
+  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", req->issuer->pid, req->issuer->name, p, bs);
+      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;
-  case SIMCALL_COMM_IRECV:
-    size = simcall_comm_irecv__get__dst_buff_size(req) ? *simcall_comm_irecv__get__dst_buff_size(req) : 0;
-    type = xbt_strdup("iRecv");
-    p = pointer_to_string(simcall_comm_irecv__get__dst_buff(req)); 
-    bs = buff_size_to_string(size);
-    if(req->issuer->smx_host)
-      args = bprintf("dst=(%lu)%s (%s), buff=%s, size=%s", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host), req->issuer->name, p, bs);
+  }
+
+  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", req->issuer->pid, req->issuer->name, p, bs);
+      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;
-  case SIMCALL_COMM_WAIT:
-    act = simcall_comm_wait__get__comm(req);
-    if(value == -1){
-      type = xbt_strdup("WaitTimeout");
-      p = pointer_to_string(act);
+  }
+
+  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 = xbt_strdup("Wait");
-      p = pointer_to_string(act);
-      args  = bprintf("comm=%s [(%lu)%s (%s)-> (%lu)%s (%s)]", p,
-                      act->comm.src_proc ? act->comm.src_proc->pid : 0,
-                      act->comm.src_proc ? MSG_host_get_name(act->comm.src_proc->smx_host) : "",
-                      act->comm.src_proc ? act->comm.src_proc->name : "",
-                      act->comm.dst_proc ? act->comm.dst_proc->pid : 0,
-                      act->comm.dst_proc ? MSG_host_get_name(act->comm.dst_proc->smx_host) : "",
-                      act->comm.dst_proc ? act->comm.dst_proc->name : "");
+    } else {
+      type = "Wait";
+      p = pointer_to_string(remote_act);
+
+      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);
+      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) : "");
     }
+    xbt_free(p);
     break;
-  case SIMCALL_COMM_TEST:
-    act = simcall_comm_test__get__comm(req);
-    if(act->comm.src_proc == NULL || act->comm.dst_proc == NULL){
-      type = xbt_strdup("Test FALSE");
-      p = pointer_to_string(act);
+  }
+
+  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));
+
+    char* p;
+    if (synchro.comm.src_proc == NULL || synchro.comm.dst_proc == NULL) {
+      type = "Test FALSE";
+      p = pointer_to_string(remote_act);
       args = bprintf("comm=%s", p);
-    }else{
-      type = xbt_strdup("Test TRUE");
-      p = pointer_to_string(act);
-      args  = bprintf("comm=%s [(%lu)%s (%s) -> (%lu)%s (%s)]", p,
-                      act->comm.src_proc->pid, act->comm.src_proc->name, MSG_host_get_name(act->comm.src_proc->smx_host),
-                      act->comm.dst_proc->pid, act->comm.dst_proc->name, MSG_host_get_name(act->comm.dst_proc->smx_host));
+    } else {
+      type = "Test TRUE";
+      p = pointer_to_string(remote_act);
+
+      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);
+      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 = xbt_strdup("WaitAny");
-    if(!xbt_dynar_is_empty(simcall_comm_waitany__get__comms(req))){
-      p = pointer_to_string(xbt_dynar_get_as(simcall_comm_waitany__get__comms(req), value, smx_action_t));
-      args = bprintf("comm=%s (%d of %lu)", p, 
-                     value+1, xbt_dynar_length(simcall_comm_waitany__get__comms(req)));
-    }else{
+  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);
+      char* p = pointer_to_string(remote_sync);
+      args = bprintf("comm=%s (%d of %lu)",
+        p, value + 1, xbt_dynar_length(&comms));
+      xbt_free(p);
+    } else {
       args = bprintf("comm at idx %d", value);
     }
     break;
+  }
 
   case SIMCALL_COMM_TESTANY:
-    if(value == -1){
-      type = xbt_strdup("TestAny FALSE");
+    if (value == -1) {
+      type = "TestAny FALSE";
       args = xbt_strdup("-");
-    }else{
-      type = xbt_strdup("TestAny");
-      args = bprintf("(%d of %lu)", value+1, xbt_dynar_length(simcall_comm_testany__get__comms(req)));
+    } 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)));
     }
     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 = xbt_strdup("MC_SNAPSHOT");
-    args = '\0';
+    type = "MC_SNAPSHOT";
+    args = NULL;
     break;
 
   case SIMCALL_MC_COMPARE_SNAPSHOTS:
-    type = xbt_strdup("MC_COMPARE_SNAPSHOTS");
-    args = '\0';
+    type = "MC_COMPARE_SNAPSHOTS";
+    args = NULL;
     break;
 
   case SIMCALL_MC_RANDOM:
-    type = xbt_strdup("MC_RANDOM");
+    type = "MC_RANDOM";
     args = bprintf("%d", value);
     break;
 
@@ -273,219 +412,224 @@ char *MC_request_to_string(smx_simcall_t req, int value)
     THROW_UNIMPLEMENTED;
   }
 
-  if(args != NULL){
-    str = bprintf("[(%lu)%s (%s)] %s(%s) (%d)", req->issuer->pid , MSG_host_get_name(req->issuer->smx_host), req->issuer->name, type, args, req->call);
-  }else{
-    str = bprintf("[(%lu)%s (%s)] %s (%d) ", req->issuer->pid , MSG_host_get_name(req->issuer->smx_host), req->issuer->name, type, req->call);
+  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 {
+    // FIXME, get process name
+    str =
+        bprintf("[(%lu)%s (%s)] %s ", issuer->pid,
+                MC_smx_process_get_host_name(issuer),
+                MC_smx_process_get_name(issuer),
+                type);
   }
-
   xbt_free(args);
-  xbt_free(type);
-  xbt_free(p);
-  xbt_free(bs);
   return str;
 }
 
 unsigned int MC_request_testany_fail(smx_simcall_t req)
 {
   unsigned int cursor;
-  smx_action_t action;
+  smx_synchro_t action;
 
-  xbt_dynar_foreach(simcall_comm_testany__get__comms(req), cursor, action){
-    if(action->comm.src_proc && action->comm.dst_proc)
+  xbt_dynar_foreach(simcall_comm_testany__get__comms(req), cursor, action) {
+    // FIXME, remote access to comm object
+    if (action->comm.src_proc && action->comm.dst_proc)
       return FALSE;
   }
 
   return TRUE;
 }
 
-int MC_request_is_visible(smx_simcall_t req)
-{
-  return req->call == SIMCALL_COMM_ISEND
-    || req->call == SIMCALL_COMM_IRECV
-    || req->call == SIMCALL_COMM_WAIT
-    || req->call == SIMCALL_COMM_WAITANY
-    || req->call == SIMCALL_COMM_TEST
-    || req->call == SIMCALL_COMM_TESTANY
-    || req->call == SIMCALL_MC_RANDOM
-    || req->call == SIMCALL_MC_SNAPSHOT
-    || req->call == SIMCALL_MC_COMPARE_SNAPSHOTS;
-}
-
-int MC_request_is_enabled(smx_simcall_t req)
+int MC_request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
 {
-  unsigned int index = 0;
-  smx_action_t act;
-
+  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;
 
-    /* If it has a timeout it will be always be enabled, because even if the
-     * communication is not ready, it can timeout and won't block.
-     * On the other hand if it hasn't a timeout, check if the comm is ready.*/
-    if(simcall_comm_wait__get__timeout(req) >= 0){
-      if(_sg_mc_timeout == 1){
-        return TRUE;
-      }else{
-        act = simcall_comm_wait__get__comm(req);
-        return (act->comm.src_proc && act->comm.dst_proc);
-      }
-    }else{
-      act = simcall_comm_wait__get__comm(req);
-      return (act->comm.src_proc && act->comm.dst_proc);
+  case SIMCALL_COMM_WAITANY: {
+    smx_synchro_t act;
+    MC_process_read_dynar_element(
+      &mc_model_checker->process, &act, simcall_comm_waitany__get__comms(req),
+      idx);
     }
     break;
 
-  case SIMCALL_COMM_WAITANY:
-    /* Check if it has at least one communication ready */
-    xbt_dynar_foreach(simcall_comm_waitany__get__comms(req), index, act) {
-      if (act->comm.src_proc && act->comm.dst_proc){
-        return TRUE;
-      }
+  case SIMCALL_COMM_TESTANY: {
+    s_smx_synchro_t act;
+    MC_process_read_dynar_element(
+      &mc_model_checker->process, &act, simcall_comm_testany__get__comms(req),
+      idx);
     }
-    return FALSE;
     break;
 
   default:
-    /* The rest of the request are always enabled */
     return TRUE;
   }
-}
-
-int MC_request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
-{
-  smx_action_t act;
-
-  switch (req->call) {
-
-  case SIMCALL_COMM_WAIT:
-    /* FIXME: check also that src and dst processes are not suspended */
-    act = simcall_comm_wait__get__comm(req);
-    return (act->comm.src_proc && act->comm.dst_proc);
-    break;
 
-  case SIMCALL_COMM_WAITANY:
-    act = xbt_dynar_get_as(simcall_comm_waitany__get__comms(req), idx, smx_action_t);
-    return (act->comm.src_proc && act->comm.dst_proc);
-    break;
-
-  case SIMCALL_COMM_TESTANY:
-    act = xbt_dynar_get_as(simcall_comm_testany__get__comms(req), idx, smx_action_t);
-    return (act->comm.src_proc && act->comm.dst_proc);
-    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;
 }
 
 int MC_process_is_enabled(smx_process_t process)
 {
-  if (process->simcall.call != SIMCALL_NONE && MC_request_is_enabled(&process->simcall))
-    return TRUE;
-
-  return FALSE;
+  return MC_request_is_enabled(&process->simcall);
 }
 
-char *MC_request_get_dot_output(smx_simcall_t req, int value){
-
+char *MC_request_get_dot_output(smx_simcall_t req, int value)
+{
   char *str = NULL, *label = NULL;
-  smx_action_t act = NULL;
+  smx_synchro_t act = NULL;
+
+  const smx_process_t issuer = MC_smx_simcall_get_issuer(req);
 
-  switch(req->call){
+  switch (req->call) {
   case SIMCALL_COMM_ISEND:
-    if(req->issuer->smx_host)
-      label = bprintf("[(%lu)%s] iSend", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host));
+    if (issuer->smx_host)
+      label =
+          bprintf("[(%lu)%s] iSend", issuer->pid,
+                  MC_smx_process_get_host_name(issuer));
     else
-      label = bprintf("[(%lu)] iSend", req->issuer->pid);
+      label = bprintf("[(%lu)] iSend", issuer->pid);
     break;
-    
+
   case SIMCALL_COMM_IRECV:
-    if(req->issuer->smx_host)
-      label = bprintf("[(%lu)%s] iRecv", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host));
+    if (issuer->smx_host)
+      label =
+          bprintf("[(%lu)%s] iRecv", issuer->pid,
+                  MC_smx_process_get_host_name(issuer));
     else
-      label = bprintf("[(%lu)] iRecv", req->issuer->pid);
+      label = bprintf("[(%lu)] iRecv", issuer->pid);
     break;
-    
+
   case SIMCALL_COMM_WAIT:
     act = simcall_comm_wait__get__comm(req);
-    if(value == -1){
-      if(req->issuer->smx_host)
-        label = bprintf("[(%lu)%s] WaitTimeout", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host));
+    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", req->issuer->pid);
-    }else{
-      if(req->issuer->smx_host)
-        label = bprintf("[(%lu)%s] Wait [(%lu)->(%lu)]", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host), act->comm.src_proc ? act->comm.src_proc->pid : 0, act->comm.dst_proc ? act->comm.dst_proc->pid : 0);
+        label = bprintf("[(%lu)] WaitTimeout", issuer->pid);
+    } else {
+      // FIXME, remote access to act->comm
+      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);
+      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)]", req->issuer->pid, act->comm.src_proc ? act->comm.src_proc->pid : 0, act->comm.dst_proc ? act->comm.dst_proc->pid : 0);
+        label =
+            bprintf("[(%lu)] Wait [(%lu)->(%lu)]", issuer->pid,
+                    src_proc ? src_proc->pid : 0,
+                    dst_proc ? dst_proc->pid : 0);
     }
     break;
-    
+
   case SIMCALL_COMM_TEST:
     act = simcall_comm_test__get__comm(req);
-    if(act->comm.src_proc == NULL || act->comm.dst_proc == NULL){
-      if(req->issuer->smx_host)
-        label = bprintf("[(%lu)%s] Test FALSE", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host));
+    if (act->comm.src_proc == NULL || act->comm.dst_proc == NULL) {
+      if (issuer->smx_host)
+        label =
+            bprintf("[(%lu)%s] Test FALSE", issuer->pid,
+                    MC_smx_process_get_host_name(issuer));
       else
-        label = bprintf("[(%lu)] Test FALSE", req->issuer->pid);
-    }else{
-      if(req->issuer->smx_host)
-        label = bprintf("[(%lu)%s] Test TRUE", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host));
+        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));
       else
-        label = bprintf("[(%lu)] Test TRUE", req->issuer->pid);
+        label = bprintf("[(%lu)] Test TRUE", issuer->pid);
     }
     break;
 
   case SIMCALL_COMM_WAITANY:
-    if(req->issuer->smx_host)
-      label = bprintf("[(%lu)%s] WaitAny [%d of %lu]", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host), value+1, xbt_dynar_length(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,
+                  xbt_dynar_length(simcall_comm_waitany__get__comms(req)));
     else
-      label = bprintf("[(%lu)] WaitAny [%d of %lu]", req->issuer->pid, value+1, xbt_dynar_length(simcall_comm_waitany__get__comms(req)));
+      label =
+          bprintf("[(%lu)] WaitAny [%d of %lu]", issuer->pid, value + 1,
+                  xbt_dynar_length(simcall_comm_waitany__get__comms(req)));
     break;
-    
+
   case SIMCALL_COMM_TESTANY:
-    if(value == -1){
-      if(req->issuer->smx_host)
-        label = bprintf("[(%lu)%s] TestAny FALSE", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host));
+    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", req->issuer->pid);
-    }else{
-      if(req->issuer->smx_host)
-        label = bprintf("[(%lu)%s] TestAny TRUE [%d of %lu]", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host), value+1, xbt_dynar_length(simcall_comm_testany__get__comms(req)));
+        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)));
       else
-        label = bprintf("[(%lu)] TestAny TRUE [%d of %lu]", req->issuer->pid, value+1, xbt_dynar_length(simcall_comm_testany__get__comms(req)));
+        label =
+            bprintf("[(%lu)] TestAny TRUE [%d of %lu]", issuer->pid,
+                    value + 1,
+                    xbt_dynar_length(simcall_comm_testany__get__comms(req)));
     }
     break;
 
+  case SIMCALL_MUTEX_LOCK:
+    label = bprintf("[(%lu)] Mutex LOCK", req->issuer->pid);
+    break;
+
   case SIMCALL_MC_RANDOM:
-    if(req->issuer->smx_host)
-      label = bprintf("[(%lu)%s] MC_RANDOM (%d)", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host), value);
+    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)", req->issuer->pid, value);
+      label = bprintf("[(%lu)] MC_RANDOM (%d)", issuer->pid, value);
     break;
 
   case SIMCALL_MC_SNAPSHOT:
-    if(req->issuer->smx_host)
-      label = bprintf("[(%lu)%s] MC_SNAPSHOT", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host));
+    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", req->issuer->pid);
+      label = bprintf("[(%lu)] MC_SNAPSHOT", issuer->pid);
     break;
 
   case SIMCALL_MC_COMPARE_SNAPSHOTS:
-    if(req->issuer->smx_host)
-      label = bprintf("[(%lu)%s] MC_COMPARE_SNAPSHOTS", req->issuer->pid, MSG_host_get_name(req->issuer->smx_host));
+    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", req->issuer->pid);
+      label = bprintf("[(%lu)] MC_COMPARE_SNAPSHOTS", issuer->pid);
     break;
 
   default:
     THROW_UNIMPLEMENTED;
   }
 
-  str = bprintf("label = \"%s\", color = %s, fontcolor = %s", label, colors[req->issuer->pid-1], colors[req->issuer->pid-1]);
+  str =
+      bprintf("label = \"%s\", color = %s, fontcolor = %s", label,
+              colors[issuer->pid - 1], colors[issuer->pid - 1]);
   xbt_free(label);
   return str;