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
21 #include "ompi_config.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 #include "ompi/info/info.h"
28
29 #if OMPI_BUILD_MPI_PROFILING
30 #if OPAL_HAVE_WEAK_SYMBOLS
31 #pragma weak MPI_Info_dup = PMPI_Info_dup
32 #endif
33 #define MPI_Info_dup PMPI_Info_dup
34 #endif
35
36 static const char FUNC_NAME[] = "MPI_Info_dup";
37
38
39 /**
40 * MPI_Info_dup - Duplicate an 'MPI_Info' object
41 *
42 * @param info source info object (handle)
43 * @param newinfo pointer to the new info object (handle)
44 *
45 * @retval MPI_SUCCESS
46 * @retval MPI_ERR_INFO
47 * @retval MPI_ERR_NO_MEM
48 *
49 * Not only will the (key, value) pairs be duplicated, the order of keys
50 * will be the same in 'newinfo' as it is in 'info'.
51 * When an info object is no longer being used, it should be freed with
52 * 'MPI_Info_free'.
53 */
54 int MPI_Info_dup(MPI_Info info, MPI_Info *newinfo) {
55 int err;
56
57 /**
58 * Here we need to do 2 things
59 * 1. Create a newinfo object using MPI_Info_create
60 * 2. Fetch all the values from info and copy them to
61 * newinfo using MPI_Info_set
62 * The new implementation facilitates traversal in many ways.
63 * I have chosen to get the number of elements on the list
64 * and copy them to newinfo one by one
65 */
66
67 if (MPI_PARAM_CHECK) {
68 OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
69 if (NULL == info || MPI_INFO_NULL == info || NULL == newinfo ||
70 ompi_info_is_freed(info)) {
71 return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_INFO,
72 FUNC_NAME);
73 }
74 }
75
76 *newinfo = OBJ_NEW(ompi_info_t);
77 if (NULL == *newinfo) {
78 return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_NO_MEM,
79 FUNC_NAME);
80 }
81
82 OPAL_CR_ENTER_LIBRARY();
83
84 /*
85 * Now to actually duplicate all the values
86 */
87 err = ompi_info_dup (info, newinfo);
88 OMPI_ERRHANDLER_RETURN(err, MPI_COMM_WORLD, err, FUNC_NAME);
89 }