added doc for wifi ns3

[simgrid.git] / src / smpi / mpi / smpi_group.cpp

diff --git a/src/smpi/mpi/smpi_group.cpp b/src/smpi/mpi/smpi_group.cpp
index 67655d4938de89881cd4df3bd8d1a30efc9c3260..dceefb9c391c43734f6570ae3b14ffdd0049901c 100644 (file)
--- a/src/smpi/mpi/smpi_group.cpp
+++ b/src/smpi/mpi/smpi_group.cpp
@@ -14,7 +14,7 @@ MPI_Group MPI_GROUP_EMPTY=&mpi_MPI_GROUP_EMPTY;
 namespace simgrid{
 namespace smpi{
 
-Group::Group(Group* origin)
+Group::Group(const Group* origin)
 {
   if (origin != MPI_GROUP_NULL && origin != MPI_GROUP_EMPTY) {
     size_              = origin->size();
@@ -62,6 +62,9 @@ s4u::Actor* Group::actor(int rank)
 int Group::rank(s4u::Actor* actor)
 {
   auto iterator = actor_to_rank_map_.find(actor);
+  //I'm not in the communicator ... but maybe my parent is ?
+  if (iterator == actor_to_rank_map_.end())
+    iterator = actor_to_rank_map_.find(s4u::Actor::by_pid(actor->get_ppid()).get());
   return (iterator == actor_to_rank_map_.end()) ? MPI_UNDEFINED : (*iterator).second;
 }
 
@@ -204,7 +207,7 @@ int Group::excl(int n, const int *ranks, MPI_Group * newgroup){
   int oldsize = size_;
   int newsize = oldsize - n;
   *newgroup = new  Group(newsize);
-  int* to_exclude = new int[size_];
+  auto* to_exclude = new int[size_];
   for (int i     = 0; i < oldsize; i++)
     to_exclude[i]=0;
   for (int i            = 0; i < n; i++)
@@ -319,7 +322,7 @@ MPI_Group Group::f2c(int id) {
     char key[KEY_SIZE];
     return static_cast<MPI_Group>(F2C::f2c_lookup()->at(get_key(key, id)));
   } else {
-    return static_cast<MPI_Group>(MPI_GROUP_NULL);
+    return MPI_GROUP_NULL;
   }
 }