2004-01-25 04:51:49 +03:00
|
|
|
/*
|
2004-11-22 04:38:40 +03:00
|
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University.
|
|
|
|
* All rights reserved.
|
|
|
|
* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
|
|
|
|
* All rights reserved.
|
2004-11-28 23:09:25 +03:00
|
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
|
|
* University of Stuttgart. All rights reserved.
|
2005-03-24 15:43:37 +03:00
|
|
|
* Copyright (c) 2004-2005 The Regents of the University of California.
|
|
|
|
* All rights reserved.
|
2004-11-22 04:38:40 +03:00
|
|
|
* $COPYRIGHT$
|
|
|
|
*
|
|
|
|
* Additional copyrights may follow
|
|
|
|
*
|
2004-10-15 23:31:47 +04:00
|
|
|
* $HEADER$
|
2004-01-25 04:51:49 +03:00
|
|
|
*/
|
2004-06-07 19:33:53 +04:00
|
|
|
#include "ompi_config.h"
|
2004-01-25 04:51:49 +03:00
|
|
|
#include <stdio.h>
|
|
|
|
|
2004-03-17 21:45:16 +03:00
|
|
|
#include "mpi/c/bindings.h"
|
2005-09-12 13:17:44 +04:00
|
|
|
#include "ompi/communicator/communicator.h"
|
|
|
|
#include "ompi/errhandler/errhandler.h"
|
|
|
|
#include "ompi/group/group.h"
|
|
|
|
#include "ompi/proc/proc.h"
|
2004-01-25 04:51:49 +03:00
|
|
|
|
2004-06-07 19:33:53 +04:00
|
|
|
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
|
2004-01-25 04:51:49 +03:00
|
|
|
#pragma weak MPI_Group_difference = PMPI_Group_difference
|
|
|
|
#endif
|
|
|
|
|
2004-06-07 19:33:53 +04:00
|
|
|
#if OMPI_PROFILING_DEFINES
|
2004-04-20 22:50:43 +04:00
|
|
|
#include "mpi/c/profile/defines.h"
|
|
|
|
#endif
|
|
|
|
|
2004-07-30 06:58:53 +04:00
|
|
|
static const char FUNC_NAME[] = "MPI_Group_difference";
|
2004-06-23 00:21:35 +04:00
|
|
|
|
|
|
|
|
2004-01-25 04:51:49 +03:00
|
|
|
int MPI_Group_difference(MPI_Group group1, MPI_Group group2,
|
2004-02-27 22:22:14 +03:00
|
|
|
MPI_Group *new_group) {
|
|
|
|
|
|
|
|
/* local varibles */
|
2004-03-23 00:42:12 +03:00
|
|
|
int new_group_size, proc1, proc2, found_in_group2, cnt;
|
2004-03-02 03:14:13 +03:00
|
|
|
int my_group_rank;
|
2004-06-07 19:33:53 +04:00
|
|
|
ompi_group_t *group1_pointer, *group2_pointer, *new_group_pointer;
|
2004-12-09 00:07:12 +03:00
|
|
|
ompi_proc_t *proc1_pointer, *proc2_pointer, *my_proc_pointer = NULL;
|
2004-02-27 22:22:14 +03:00
|
|
|
|
2004-03-16 04:18:47 +03:00
|
|
|
/* error checking */
|
|
|
|
if( MPI_PARAM_CHECK ) {
|
2004-06-23 00:21:35 +04:00
|
|
|
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
|
2004-06-18 23:02:52 +04:00
|
|
|
|
2004-03-23 00:42:12 +03:00
|
|
|
if( (MPI_GROUP_NULL == group1) || (MPI_GROUP_NULL == group2) ||
|
|
|
|
(NULL == group1) || (NULL == group2) ) {
|
2004-06-07 19:33:53 +04:00
|
|
|
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_GROUP,
|
2004-06-23 00:21:35 +04:00
|
|
|
FUNC_NAME);
|
2004-03-16 04:18:47 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2004-06-07 19:33:53 +04:00
|
|
|
group1_pointer=(ompi_group_t *)group1;
|
|
|
|
group2_pointer=(ompi_group_t *)group2;
|
2004-02-27 22:22:14 +03:00
|
|
|
|
|
|
|
/*
|
|
|
|
* form union
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* get new group size */
|
|
|
|
new_group_size=0;
|
|
|
|
|
|
|
|
/* loop over group1 members */
|
|
|
|
for( proc1=0; proc1 < group1_pointer->grp_proc_count; proc1++ ) {
|
|
|
|
proc1_pointer=group1_pointer->grp_proc_pointers[proc1];
|
|
|
|
/* check to see if this proc is in group2 */
|
|
|
|
found_in_group2=0;
|
|
|
|
for( proc2=0 ; proc2 < group2_pointer->grp_proc_count ; proc2++ ) {
|
|
|
|
proc2_pointer=group2_pointer->grp_proc_pointers[proc2];
|
|
|
|
if( proc1_pointer == proc2_pointer ) {
|
|
|
|
found_in_group2=true;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
} /* end proc1 loop */
|
|
|
|
if(found_in_group2)
|
|
|
|
continue;
|
|
|
|
new_group_size++;
|
|
|
|
} /* end proc loop */
|
|
|
|
|
2004-09-09 20:01:44 +04:00
|
|
|
if ( 0 == new_group_size ) {
|
|
|
|
*new_group = MPI_GROUP_EMPTY;
|
|
|
|
OBJ_RETAIN(MPI_GROUP_EMPTY);
|
|
|
|
return MPI_SUCCESS;
|
|
|
|
}
|
|
|
|
|
2004-06-07 19:33:53 +04:00
|
|
|
/* allocate a new ompi_group_t structure */
|
|
|
|
new_group_pointer=ompi_group_allocate(new_group_size);
|
2004-02-27 22:22:14 +03:00
|
|
|
if( NULL == new_group_pointer ) {
|
2004-06-07 19:33:53 +04:00
|
|
|
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_GROUP,
|
2004-03-23 00:42:12 +03:00
|
|
|
"MPI_Group_difference - II");
|
2004-02-27 22:22:14 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
/* fill in group list */
|
|
|
|
cnt=0;
|
|
|
|
/* loop over group1 members */
|
|
|
|
for( proc1=0; proc1 < group1_pointer->grp_proc_count; proc1++ ) {
|
|
|
|
proc1_pointer=group1_pointer->grp_proc_pointers[proc1];
|
|
|
|
/* check to see if this proc is in group2 */
|
|
|
|
found_in_group2=0;
|
|
|
|
for( proc2=0 ; proc2 < group2_pointer->grp_proc_count ; proc2++ ) {
|
|
|
|
proc2_pointer=group2_pointer->grp_proc_pointers[proc2];
|
|
|
|
if( proc1_pointer == proc2_pointer ) {
|
|
|
|
found_in_group2=true;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
} /* end proc1 loop */
|
|
|
|
if(found_in_group2)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
new_group_pointer->grp_proc_pointers[cnt] =
|
|
|
|
group1_pointer->grp_proc_pointers[proc1];
|
|
|
|
|
|
|
|
cnt++;
|
|
|
|
} /* end proc loop */
|
|
|
|
|
2004-03-16 04:18:47 +03:00
|
|
|
/* increment proc reference counters */
|
2004-06-07 19:33:53 +04:00
|
|
|
ompi_group_increment_proc_count(new_group_pointer);
|
2004-03-16 04:18:47 +03:00
|
|
|
|
2004-03-02 03:14:13 +03:00
|
|
|
/* find my rank */
|
|
|
|
my_group_rank=group1_pointer->grp_my_rank;
|
2004-09-13 13:03:10 +04:00
|
|
|
if ( MPI_UNDEFINED != my_group_rank ) {
|
|
|
|
my_proc_pointer=group1_pointer->grp_proc_pointers[my_group_rank];
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
my_group_rank=group2_pointer->grp_my_rank;
|
|
|
|
if ( MPI_UNDEFINED != my_group_rank ) {
|
|
|
|
my_proc_pointer=group2_pointer->grp_proc_pointers[my_group_rank];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if ( MPI_UNDEFINED == my_group_rank ) {
|
|
|
|
new_group_pointer->grp_my_rank = MPI_UNDEFINED;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
ompi_set_group_rank(new_group_pointer,my_proc_pointer);
|
|
|
|
}
|
2004-03-02 03:14:13 +03:00
|
|
|
|
|
|
|
*new_group = (MPI_Group)new_group_pointer;
|
|
|
|
|
2004-03-23 00:42:12 +03:00
|
|
|
return MPI_SUCCESS;
|
2004-01-25 04:51:49 +03:00
|
|
|
}
|