/* -*- 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 <mpid_dataloop.h>
#include <stdlib.h>
/* #define MPID_TYPE_ALLOC_DEBUG */
/*@
MPID_Type_zerolen - create an empty datatype
Input Parameters:
. none
Output Parameters:
. newtype - handle of new contiguous datatype
Return Value:
MPI_SUCCESS on success, MPI error code on failure.
@*/
int MPID_Type_zerolen(MPI_Datatype *newtype)
{
int mpi_errno;
MPID_Datatype *new_dtp;
/* allocate new datatype object and handle */
new_dtp = (MPID_Datatype *) MPIU_Handle_obj_alloc(&MPID_Datatype_mem);
/* --BEGIN ERROR HANDLING-- */
if (!new_dtp)
{
mpi_errno = MPIR_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
"MPID_Type_zerolen",
__LINE__, MPI_ERR_OTHER,
"**nomem", 0);
return mpi_errno;
}
/* --END ERROR HANDLING-- */
/* handle is filled in by MPIU_Handle_obj_alloc() */
MPIU_Object_set_ref(new_dtp, 1);
new_dtp->is_permanent = 0;
new_dtp->is_committed = 0;
new_dtp->attributes = NULL;
new_dtp->cache_id = 0;
new_dtp->name[0] = 0;
new_dtp->contents = NULL;
new_dtp->dataloop = NULL;
new_dtp->dataloop_size = -1;
new_dtp->dataloop_depth = -1;
new_dtp->hetero_dloop = NULL;
new_dtp->hetero_dloop_size = -1;
new_dtp->hetero_dloop_depth = -1;
new_dtp->size = 0;
new_dtp->has_sticky_ub = 0;
new_dtp->has_sticky_lb = 0;
new_dtp->lb = 0;
new_dtp->ub = 0;
new_dtp->true_lb = 0;
new_dtp->true_ub = 0;
new_dtp->extent = 0;
new_dtp->alignsize = 0;
new_dtp->builtin_element_size = 0;
new_dtp->basic_type = 0;
new_dtp->n_builtin_elements = 0;
new_dtp->is_contig = 1;
*newtype = new_dtp->handle;
return MPI_SUCCESS;
}