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openmpi/ompi/mpi/c/cart_sub.c
Jeff Squyres ca80c7a9bd cart_sub.c: allow remain_dims==NULL if there is no topology on comm
Patch submitted by Gilles Gouaillardet on #4518.  Reviewed by Jeff.

Fixes trac:4518

cmr=v1.8.2:reviewer=ompi-rm1.8

This commit was SVN r31517.

The following Trac tickets were found above:
  Ticket 4518 --> https://svn.open-mpi.org/trac/ompi/ticket/4518
2014-04-24 16:10:44 +00:00

83 строки
2.8 KiB
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) 2004-2012 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2008 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) 2007-2009 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2012-2013 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2014 Research Organization for Information Science
* and Technology (RIST). 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/communicator/communicator.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/mca/topo/topo.h"
#include "ompi/memchecker.h"
#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Cart_sub = PMPI_Cart_sub
#endif
#if OMPI_PROFILING_DEFINES
#include "ompi/mpi/c/profile/defines.h"
#endif
static const char FUNC_NAME[] = "MPI_Cart_sub";
int MPI_Cart_sub(MPI_Comm comm, const int remain_dims[], MPI_Comm *new_comm)
{
int err;
MEMCHECKER(
memchecker_comm(comm);
);
/* check the arguments */
if (MPI_PARAM_CHECK) {
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
if (ompi_comm_invalid(comm)) {
return OMPI_ERRHANDLER_INVOKE (MPI_COMM_WORLD, MPI_ERR_COMM,
FUNC_NAME);
}
if (OMPI_COMM_IS_INTER(comm)) {
return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_COMM,
FUNC_NAME);
}
if (((NULL == remain_dims) && (0 != comm->c_topo->mtc.cart->ndims))
&& (NULL == new_comm)) {
return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_ARG,
FUNC_NAME);
}
}
if (!OMPI_COMM_IS_CART(comm)) {
return OMPI_ERRHANDLER_INVOKE (comm, MPI_ERR_TOPOLOGY,
FUNC_NAME);
}
OPAL_CR_ENTER_LIBRARY();
/* XXX -- CONST -- do not cast away const -- update mca/topo */
err = comm->c_topo->topo.cart.cart_sub(comm, (int *) remain_dims, new_comm);
OPAL_CR_EXIT_LIBRARY();
OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
}