/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */

/*

 *

 *  (C) 2001 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include "mpiimpl.h"

#include "errcodes.h"

/* -- Begin Profiling Symbol Block for routine MPI_Error_string */

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Error_string = PMPI_Error_string

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Error_string  MPI_Error_string

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Error_string as PMPI_Error_string

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Error_string(int errorcode, char *string, int *resultlen)

    __attribute__ ((weak, alias("PMPI_Error_string")));

#endif

/* -- End Profiling Symbol Block */

/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build

   the MPI routines */

#ifndef MPICH_MPI_FROM_PMPI

#undef MPI_Error_string

#define MPI_Error_string PMPI_Error_string

#endif

#undef FUNCNAME

#define FUNCNAME MPI_Error_string

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

/*@

   MPI_Error_string - Return a string for a given error code

Input Parameters:

. errorcode - Error code returned by an MPI routine or an MPI error class

Output Parameters:

+ string - Text that corresponds to the errorcode

- resultlen - Length of string

Notes:  Error codes are the values return by MPI routines (in C) or in the

'ierr' argument (in Fortran).  These can be converted into error classes

with the routine 'MPI_Error_class'.

.N ThreadSafe

.N Fortran

.N Errors

.N MPI_SUCCESS

.N MPI_ERR_ARG

@*/

int MPI_Error_string(int errorcode, char *string, int *resultlen)

{

    int mpi_errno = MPI_SUCCESS;

    MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_ERROR_STRING);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_ERROR_STRING);

    /* Validate parameters, especially handles needing to be converted */

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            MPIR_ERRTEST_ARGNULL(string, "string", mpi_errno);

            MPIR_ERRTEST_ARGNULL(resultlen, "resultlen", mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#endif /* HAVE_ERROR_CHECKING */

    /* ... body of routine ...  */

    MPIR_Err_get_string(errorcode, string, MPI_MAX_ERROR_STRING, NULL);

    *resultlen = (int) strlen(string);

    /* ... end of body of routine ... */

#ifdef HAVE_ERROR_CHECKING

  fn_exit:

#endif

    MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_ERROR_STRING);

    return mpi_errno;

    /* --BEGIN ERROR HANDLING-- */

#ifdef HAVE_ERROR_CHECKING

  fn_fail:

    {

        mpi_errno =

            MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,

                                 "**mpi_error_string", "**mpi_error_string %d %s %p", errorcode,

                                 string, resultlen);

    }

    mpi_errno = MPIR_Err_return_comm(NULL, FCNAME, mpi_errno);

    goto fn_exit;

#endif

    /* --END ERROR HANDLING-- */

}