-/* Copyright (c) 2010. The SimGrid Team.
+/* Copyright (c) 2010, 2013-2014. 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. */
+ * under the terms of the license (GNU LGPL) which comes with this package. */
#include "private.h"
MPI_Group smpi_group_copy(MPI_Group origin)
{
- MPI_Group group;
+ MPI_Group group=origin;
int i, count;
-
- count = smpi_process_count();
- group = xbt_new(s_smpi_mpi_group_t, 1);
- group->size = origin->size;
- group->rank_to_index_map = xbt_new(int, group->size);
- group->index_to_rank_map = xbt_new(int, count);
- group->refcount = 1;
- for (i = 0; i < group->size; i++) {
- group->rank_to_index_map[i] = origin->rank_to_index_map[i];
- }
- for (i = 0; i < count; i++) {
- group->index_to_rank_map[i] = origin->index_to_rank_map[i];
- }
+ if(origin!= smpi_comm_group(MPI_COMM_WORLD)
+ && origin != MPI_GROUP_NULL
+ && origin != smpi_comm_group(MPI_COMM_SELF)
+ && origin != MPI_GROUP_EMPTY)
+ {
+ count = smpi_process_count();
+ group = xbt_new(s_smpi_mpi_group_t, 1);
+ group->size = origin->size;
+ group->rank_to_index_map = xbt_new(int, group->size);
+ group->index_to_rank_map = xbt_new(int, count);
+ group->refcount = 1;
+ for (i = 0; i < group->size; i++) {
+ group->rank_to_index_map[i] = origin->rank_to_index_map[i];
+ }
+ for (i = 0; i < count; i++) {
+ group->index_to_rank_map[i] = origin->index_to_rank_map[i];
+ }
+ }
return group;
}
void smpi_group_destroy(MPI_Group group)
{
- XBT_VERB("trying to free group %p, refcount = %d", group, group->refcount);
+ if(group!= smpi_comm_group(MPI_COMM_WORLD)
+ && group != MPI_GROUP_NULL
+ && group != smpi_comm_group(MPI_COMM_SELF)
+ && group != MPI_GROUP_EMPTY)
smpi_group_unuse(group);
}
{
if (rank < group->size && index < smpi_process_count()) {
group->rank_to_index_map[rank] = index;
- group->index_to_rank_map[index] = rank;
+ if(index!=MPI_UNDEFINED)group->index_to_rank_map[index] = rank;
}
}
int smpi_group_unuse(MPI_Group group)
{
- if (group->refcount-- <= 0) {
- XBT_VERB("freeing group %p", group);
+ group->refcount--;
+ if (group->refcount <= 0) {
xbt_free(group->rank_to_index_map);
xbt_free(group->index_to_rank_map);
xbt_free(group);
+ return 0;
}
return group->refcount;
+
}
int smpi_group_size(MPI_Group group)