1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
2 /*
3 * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
4 * University Research and Technology
5 * Corporation. All rights reserved.
6 * Copyright (c) 2004-2005 The University of Tennessee and The University
7 * of Tennessee Research Foundation. All rights
8 * reserved.
9 * Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
10 * University of Stuttgart. All rights reserved.
11 * Copyright (c) 2004-2005 The Regents of the University of California.
12 * All rights reserved.
13 * Copyright (c) 2010-2012 Cisco Systems, Inc. All rights reserved.
14 * Copyright (c) 2013 Los Alamos National Security, LLC. All rights
15 * reserved.
16 * Copyright (c) 2015 Research Organization for Information Science
17 * and Technology (RIST). All rights reserved.
18 * $COPYRIGHT$
19 *
20 * Additional copyrights may follow
21 *
22 * $HEADER$
23 */
24 #include "ompi_config.h"
25 #include <stdio.h>
26
27 #include "ompi/mpi/c/bindings.h"
28 #include "ompi/runtime/params.h"
29 #include "ompi/communicator/communicator.h"
30 #include "ompi/errhandler/errhandler.h"
31 #include "ompi/mpi/fortran/base/fint_2_int.h"
32 #include "ompi/mpi/fortran/base/constants.h"
33 #include "ompi/memchecker.h"
34
35 #if OMPI_BUILD_MPI_PROFILING
36 #if OPAL_HAVE_WEAK_SYMBOLS
37 #pragma weak MPI_Status_c2f = PMPI_Status_c2f
38 #endif
39 #define MPI_Status_c2f PMPI_Status_c2f
40 #endif
41
42 static const char FUNC_NAME[] = "MPI_Status_c2f";
43
44
45 int MPI_Status_c2f(const MPI_Status *c_status, MPI_Fint *f_status)
46 {
47 const int *c_ints;
48 int i;
49 MEMCHECKER(
50 if(c_status != MPI_STATUSES_IGNORE) {
51 /*
52 * Before checking the complete status, we need to reset the definedness
53 * of the MPI_ERROR-field (single-completion calls wait/test).
54 */
55 opal_memchecker_base_mem_defined((void*)&c_status->MPI_ERROR, sizeof(int));
56 memchecker_status(c_status);
57 }
58 );
59
60 OPAL_CR_NOOP_PROGRESS();
61
62 if (MPI_PARAM_CHECK) {
63 OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
64
65 /* MPI-2:4.12.5 says that if you pass in
66 MPI_STATUS[ES]_IGNORE, it's erroneous */
67
68 if (NULL == c_status || MPI_STATUS_IGNORE == c_status ||
69 MPI_STATUSES_IGNORE == c_status || NULL == f_status) {
70 return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD,
71 MPI_ERR_IN_STATUS, FUNC_NAME);
72 }
73 }
74
75 /* Note that MPI-2.2 16.3.5 states that even the hidden data in a
76 status must be converted (!). This is somewhat problematic
77 because the Fortran data is all INTEGERS while the C MPI_Status
78 contains a size_t. That being said, note 2 things:
79
80 1. The _ucount and _canceled members are never accessed from
81 Fortran.
82 2. configure calculated a value of MPI_STATUS_SIZE to ensure
83 that the Fortran status is the Right size to hold the C
84 MPI_Status (including the size_t member).
85
86 So for the purposes of this function, just copy over all the
87 data as if they were int's. This works because all OMPI
88 Fortran MPI API functions that take a status as an IN argument
89 first call MPI_Status_f2c on it before using it (in which case
90 we'll do the exact opposite copy, thereby rebuilding the size_t
91 value properly before it is accessed in C).
92
93 Note that if sizeof(int) > sizeof(INTEGER), we're potentially
94 hosed anyway (i.e., even the public values in the status could
95 get truncated). But if sizeof(int) == sizeof(INTEGER) or
96 sizeof(int) < sizeof(INTEGER), everything should be kosher. */
97 c_ints = (const int*)c_status;
98 for( i = 0; i < (int)(sizeof(MPI_Status) / sizeof(int)); i++ )
99 f_status[i] = OMPI_INT_2_FINT(c_ints[i]);
100
101 return MPI_SUCCESS;
102 }