1 /*
2 * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
3 * University Research and Technology
4 * Corporation. All rights reserved.
5 * Copyright (c) 2004-2005 The University of Tennessee and The University
6 * of Tennessee Research Foundation. All rights
7 * reserved.
8 * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
9 * University of Stuttgart. All rights reserved.
10 * Copyright (c) 2004-2005 The Regents of the University of California.
11 * All rights reserved.
12 * Copyright (c) 2015 Research Organization for Information Science
13 * and Technology (RIST). All rights reserved.
14 * $COPYRIGHT$
15 *
16 * Additional copyrights may follow
17 *
18 * $HEADER$
19 */
20 #include "ompi_config.h"
21 #include <stdio.h>
22
23 #include "ompi/mpi/c/bindings.h"
24 #include "ompi/runtime/params.h"
25 #include "ompi/communicator/communicator.h"
26 #include "ompi/errhandler/errhandler.h"
27
28 #if OMPI_BUILD_MPI_PROFILING
29 #if OPAL_HAVE_WEAK_SYMBOLS
30 #pragma weak MPI_Comm_get_parent = PMPI_Comm_get_parent
31 #endif
32 #define MPI_Comm_get_parent PMPI_Comm_get_parent
33 #endif
34
35 static const char FUNC_NAME[] = "MPI_Comm_get_parent";
36
37
38 int MPI_Comm_get_parent(MPI_Comm *parent)
39 {
40
41 OPAL_CR_NOOP_PROGRESS();
42
43 if ( MPI_PARAM_CHECK ) {
44 OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
45
46 if ( NULL == parent ) {
47 return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
48 FUNC_NAME);
49 }
50 }
51
52 /*
53 * ompi_mpi_comm_parent is MPI_COMM_NULL, in case this
54 * world has not been spawned by another MPI job.
55 * This is also the return value required by MPI-2.
56 */
57
58 *parent = ompi_mpi_comm_parent;
59 return MPI_SUCCESS;
60 }