/*
 * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2005 The University of Tennessee and The University
 *                         of Tennessee Research Foundation.  All rights
 *                         reserved.
 * Copyright (c) 2004-2005 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) 2006-2012 Cisco Systems, Inc.  All rights reserved.
 * Copyright (c) 2015      Research Organization for Information Science
 *                         and Technology (RIST). All rights reserved.
 * $COPYRIGHT$
 *
 * Additional copyrights may follow
 *
 * $HEADER$
 */

#include "ompi_config.h"

#include "ompi/mpi/fortran/mpif-h/bindings.h"
#include "ompi/mpi/fortran/base/strings.h"
#include "ompi/constants.h"
#include "ompi/communicator/communicator.h"

#if OMPI_BUILD_MPI_PROFILING
#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak PMPI_ERROR_STRING = ompi_error_string_f
#pragma weak pmpi_error_string = ompi_error_string_f
#pragma weak pmpi_error_string_ = ompi_error_string_f
#pragma weak pmpi_error_string__ = ompi_error_string_f

#pragma weak PMPI_Error_string_f = ompi_error_string_f
#pragma weak PMPI_Error_string_f08 = ompi_error_string_f
#else
OMPI_GENERATE_F77_BINDINGS (PMPI_ERROR_STRING,
                            pmpi_error_string,
                            pmpi_error_string_,
                            pmpi_error_string__,
                            pompi_error_string_f,
                            (MPI_Fint *errorcode, char *string, MPI_Fint *resultlen, MPI_Fint *ierr, int string_len),
                            (errorcode, string, resultlen, ierr, string_len) )
#endif
#endif

#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_ERROR_STRING = ompi_error_string_f
#pragma weak mpi_error_string = ompi_error_string_f
#pragma weak mpi_error_string_ = ompi_error_string_f
#pragma weak mpi_error_string__ = ompi_error_string_f

#pragma weak MPI_Error_string_f = ompi_error_string_f
#pragma weak MPI_Error_string_f08 = ompi_error_string_f
#else
#if ! OMPI_BUILD_MPI_PROFILING
OMPI_GENERATE_F77_BINDINGS (MPI_ERROR_STRING,
                            mpi_error_string,
                            mpi_error_string_,
                            mpi_error_string__,
                            ompi_error_string_f,
                            (MPI_Fint *errorcode, char *string, MPI_Fint *resultlen, MPI_Fint *ierr, int string_len),
                            (errorcode, string, resultlen, ierr, string_len) )
#else
#define ompi_error_string_f pompi_error_string_f
#endif
#endif


static const char FUNC_NAME[] = "MPI_ERROR_STRING";

/* Note that the string_len parameter is silently added by the Fortran
   compiler, and will be filled in with the actual length of the
   character array from the caller.  Hence, it's the max length of the
   string that we can use. */

void ompi_error_string_f(MPI_Fint *errorcode, char *string,
			MPI_Fint *resultlen, MPI_Fint *ierr, int string_len)
{
    int c_ierr, ret;
    char c_string[MPI_MAX_ERROR_STRING + 1];
    OMPI_SINGLE_NAME_DECL(resultlen);

    c_ierr = PMPI_Error_string(OMPI_FINT_2_INT(*errorcode),
                              c_string,
                              OMPI_SINGLE_NAME_CONVERT(resultlen)
                              );
    if (NULL != ierr) *ierr = OMPI_INT_2_FINT(c_ierr);

    if (MPI_SUCCESS == c_ierr) {
        OMPI_SINGLE_INT_2_FINT(resultlen);
        if (OMPI_SUCCESS != (ret = ompi_fortran_string_c2f(c_string, string,
                                                           string_len))) {
            c_ierr = OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, ret, FUNC_NAME);
            if (NULL != ierr) *ierr = OMPI_INT_2_FINT(c_ierr);
        }
    }
}
