/* -*- 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 "datatype.h"

/* -- Begin Profiling Symbol Block for routine MPI_Type_set_name */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Type_set_name = PMPI_Type_set_name
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Type_set_name  MPI_Type_set_name
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Type_set_name as PMPI_Type_set_name
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_Type_set_name(MPI_Datatype datatype, const char *type_name)
    __attribute__ ((weak, alias("PMPI_Type_set_name")));
#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_Type_set_name
#define MPI_Type_set_name PMPI_Type_set_name

#endif

#undef FUNCNAME
#define FUNCNAME MPI_Type_set_name
#undef FCNAME
#define FCNAME "MPI_Type_set_name"

/*@
   MPI_Type_set_name - set datatype name

Input Parameters:
+ datatype - datatype whose identifier is to be set (handle)
- type_name - the character string which is remembered as the name (string)

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_TYPE
.N MPI_ERR_OTHER
@*/
int MPI_Type_set_name(MPI_Datatype datatype, const char *type_name)
{
    int mpi_errno = MPI_SUCCESS;
    MPIR_Datatype *datatype_ptr = NULL;
    static int setup = 0;
    MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_TYPE_SET_NAME);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_TYPE_SET_NAME);

    /* Validate parameters, especially handles needing to be converted */
#ifdef HAVE_ERROR_CHECKING
    {
        MPID_BEGIN_ERROR_CHECKS;
        {
            MPIR_ERRTEST_DATATYPE(datatype, "datatype", mpi_errno);
        }
        MPID_END_ERROR_CHECKS;
    }
#endif

    /* Convert MPI object handles to object pointers */
    MPIR_Datatype_get_ptr(datatype, datatype_ptr);

    /* Validate parameters and objects (post conversion) */
#ifdef HAVE_ERROR_CHECKING
    {
        MPID_BEGIN_ERROR_CHECKS;
        {
            int slen;

            /* Validate datatype_ptr */
            MPIR_Datatype_valid_ptr(datatype_ptr, mpi_errno);
            /* If datatype_ptr is not valid, it will be reset to null */
            MPIR_ERRTEST_ARGNULL(type_name, "type_name", mpi_errno);

            slen = (int) strlen(type_name);
            MPIR_ERR_CHKANDSTMT1((slen >= MPI_MAX_OBJECT_NAME), mpi_errno,
                                 MPI_ERR_ARG, goto fn_fail, "**typenamelen",
                                 "**typenamelen %d", slen);
        }
        MPID_END_ERROR_CHECKS;
    }
#endif /* HAVE_ERROR_CHECKING */

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

    /* If this is the first call, initialize all of the predefined names.
     * Note that type_get_name must also make the same call */
    if (!setup) {
        MPIR_Datatype_init_names();
        setup = 1;
    }

    /* Include the null in MPI_MAX_OBJECT_NAME */
    MPL_strncpy(datatype_ptr->name, type_name, MPI_MAX_OBJECT_NAME);

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

#ifdef HAVE_ERROR_CHECKING
  fn_exit:
#endif
    MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_TYPE_SET_NAME);
    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_type_set_name", "**mpi_type_set_name %D %s", datatype,
                                 type_name);
    }
    mpi_errno = MPIR_Err_return_comm(NULL, FCNAME, mpi_errno);
    goto fn_exit;
#endif
    /* --END ERROR HANDLING-- */
}