openmpi/ompi/mpi/c/group_incl.c

/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
 * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2005 The University of Tennessee and The University
 *                         of Tennessee Research Foundation.  All rights
 *                         reserved.
 * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart, 
 *                         University of Stuttgart.  All rights reserved.
 * Copyright (c) 2004-2005 The Regents of the University of California.
 *                         All rights reserved.
 * Copyright (c) 2006      University of Houston. All rights reserved.
 * Copyright (c) 2006-2009 Cisco Systems, Inc.  All rights reserved.
 * Copyright (c) 2012-2013 Los Alamos National Security, LLC. All rights
 *                         reserved.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */
#include "ompi_config.h"
#include <stdio.h>

#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/group/group.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/communicator/communicator.h"

#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Group_incl = PMPI_Group_incl
#endif

#if OMPI_PROFILING_DEFINES
#include "ompi/mpi/c/profile/defines.h"
#endif

static const char FUNC_NAME[] = "MPI_Group_incl";


int MPI_Group_incl(MPI_Group group, int n, const int ranks[], MPI_Group *new_group)
{
  int i, group_size, err;
  ompi_group_t *group_pointer;

  group_pointer = (ompi_group_t *)group;
  group_size = ompi_group_size ( group_pointer );

  if( MPI_PARAM_CHECK ) {
      OMPI_ERR_INIT_FINALIZE(FUNC_NAME);

      /* verify that group is valid group */
      if ( (MPI_GROUP_NULL == group) || ( NULL == group) ||
           (NULL == new_group) ) {
          return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_GROUP,
                                        FUNC_NAME);
      } else if (NULL == ranks && n > 0) {
          return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
                                        FUNC_NAME);
      }

      /* check that new group is no larger than old group */
      if ( n > group_size ) {
          return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_RANK,
                                        FUNC_NAME);
      }

      for (i = 0; i < n; i++) {
          if ((ranks[i] < 0) || (ranks[i] >= group_size)){
              return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_RANK, 
                                             FUNC_NAME);
          }
      }
  }  /* end if( MPI_CHECK_ARGS) */
  
  if ( 0 == n ) {
      *new_group = MPI_GROUP_EMPTY;
      OBJ_RETAIN(MPI_GROUP_EMPTY);
      return MPI_SUCCESS;
  }

  OPAL_CR_ENTER_LIBRARY();

  err = ompi_group_incl(group,n,ranks,new_group);
  OMPI_ERRHANDLER_RETURN(err, MPI_COMM_WORLD,err,FUNC_NAME);
}