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) 2004-2008 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) 2006-2012 Cisco Systems, Inc. All rights reserved.
13 * Copyright (c) 2015 Research Organization for Information Science
14 * and Technology (RIST). All rights reserved.
15 * $COPYRIGHT$
16 *
17 * Additional copyrights may follow
18 *
19 * $HEADER$
20 */
21 #include "ompi_config.h"
22 #include <stdio.h>
23
24 #include "ompi/mpi/c/bindings.h"
25 #include "ompi/runtime/params.h"
26 #include "ompi/communicator/communicator.h"
27 #include "ompi/errhandler/errhandler.h"
28 #include "ompi/mpi/fortran/base/fint_2_int.h"
29 #include "ompi/memchecker.h"
30
31 #if OMPI_BUILD_MPI_PROFILING
32 #if OPAL_HAVE_WEAK_SYMBOLS
33 #pragma weak MPI_Comm_c2f = PMPI_Comm_c2f
34 #endif
35 #define MPI_Comm_c2f PMPI_Comm_c2f
36 #endif
37
38 static const char FUNC_NAME[] = "MPI_Comm_c2f";
39
40
41 MPI_Fint MPI_Comm_c2f(MPI_Comm comm)
42 {
43 MEMCHECKER(
44 memchecker_comm(comm);
45 );
46
47 OPAL_CR_NOOP_PROGRESS();
48
49 if ( MPI_PARAM_CHECK) {
50 OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
51
52 /* Note that ompi_comm_invalid() explicitly checks for
53 MPI_COMM_NULL, but MPI_COMM_C2F is supposed to treat
54 MPI_COMM_NULL as a valid communicator (and therefore return
55 a valid Fortran handle for it). Hence, this function
56 should not return an error if MPI_COMM_NULL is passed in.
57
58 See a big comment in ompi/communicator/communicator.h about
59 this. */
60 if (ompi_comm_invalid (comm) && MPI_COMM_NULL != comm) {
61 return OMPI_INT_2_FINT(-1);
62 }
63 }
64
65 return OMPI_INT_2_FINT(comm->c_f_to_c_index);
66 }