/* -*- 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"

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

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Type_dup = PMPI_Type_dup

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Type_dup  MPI_Type_dup

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Type_dup as PMPI_Type_dup

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Type_dup(MPI_Datatype oldtype, MPI_Datatype *newtype) __attribute__((weak,alias("PMPI_Type_dup")));

#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_dup

#define MPI_Type_dup PMPI_Type_dup

#endif

#undef FUNCNAME

#define FUNCNAME MPI_Type_dup

/*@

   MPI_Type_dup - Duplicate a datatype

Input Parameters:

. oldtype - datatype (handle)

Output Parameters:

. newtype - copy of type (handle) 

.N ThreadSafe

.N Fortran

.N Errors

.N MPI_SUCCESS

.N MPI_ERR_TYPE

@*/

int MPI_Type_dup(MPI_Datatype oldtype, MPI_Datatype *newtype)

{

    static const char FCNAME[] = "MPI_Type_dup";

    int mpi_errno = MPI_SUCCESS;

    MPI_Datatype new_handle;

    MPID_Datatype *datatype_ptr = NULL;

    MPID_Datatype *new_dtp;

    MPID_MPI_STATE_DECL(MPID_STATE_MPI_TYPE_DUP);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_TYPE_DUP);

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

#   ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

	    MPIR_ERRTEST_DATATYPE(oldtype, "datatype", mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#   endif

    /* Convert MPI object handles to object pointers */

    MPID_Datatype_get_ptr( oldtype, datatype_ptr );

    /* Convert MPI object handles to object pointers */

#   ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            /* Validate datatype_ptr */

            MPID_Datatype_valid_ptr( datatype_ptr, mpi_errno );

	    /* If comm_ptr is not valid, it will be reset to null */

	    MPIR_ERRTEST_ARGNULL(newtype, "newtype", mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#   endif /* HAVE_ERROR_CHECKING */

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

    mpi_errno = MPID_Type_dup(oldtype, &new_handle);

    if (mpi_errno != MPI_SUCCESS) goto fn_fail;

    MPID_Datatype_get_ptr(new_handle, new_dtp);

    mpi_errno = MPID_Datatype_set_contents(new_dtp,

				           MPI_COMBINER_DUP,

				           0, /* ints */

				           0, /* aints */

				           1, /* types */

				           NULL,

				           NULL,

				           &oldtype);

    mpi_errno = MPID_Type_commit(&new_handle);

    if (mpi_errno) { MPIR_ERR_POP(mpi_errno); }

    /* Copy attributes, executing the attribute copy functions */

    /* This accesses the attribute dup function through the perprocess

       structure to prevent type_dup from forcing the linking of the

       attribute functions.  The actual function is (by default)

       MPIR_Attr_dup_list 

    */

    if (mpi_errno == MPI_SUCCESS && MPIR_Process.attr_dup)

    {

	new_dtp->attributes = 0;

	mpi_errno = MPIR_Process.attr_dup( oldtype,

	    datatype_ptr->attributes, 

	    &new_dtp->attributes );

	if (mpi_errno)

	{

            MPID_Datatype_release(new_dtp);

	    goto fn_fail;

	}

    }

    if (mpi_errno != MPI_SUCCESS) goto fn_fail;

    MPID_OBJ_PUBLISH_HANDLE(*newtype, new_handle);

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

  fn_exit:

    MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_TYPE_DUP);

    MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    return mpi_errno;

  fn_fail:

    /* --BEGIN ERROR HANDLING-- */

    *newtype = MPI_DATATYPE_NULL;

#   ifdef HAVE_ERROR_CHECKING

    {

	mpi_errno = MPIR_Err_create_code(

	    mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER, "**mpi_type_dup",

	    "**mpi_type_dup %D %p", oldtype, newtype);

    }

#   endif

    mpi_errno = MPIR_Err_return_comm( NULL, FCNAME, mpi_errno );

    goto fn_exit;

    /* --END ERROR HANDLING-- */

}