/* -*- 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 */
static int MPIDI_Type_create_resized_memory_error(void);
int MPID_Type_create_resized(MPI_Datatype oldtype,
MPI_Aint lb,
MPI_Aint extent,
MPI_Datatype *newtype_p)
{
MPID_Datatype *new_dtp;
new_dtp = (MPID_Datatype *) MPIU_Handle_obj_alloc(&MPID_Datatype_mem);
/* --BEGIN ERROR HANDLING-- */
if (!new_dtp) return MPIDI_Type_create_resized_memory_error();
/* --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 = 0;
new_dtp->cache_id = 0;
new_dtp->name[0] = 0;
new_dtp->contents = 0;
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;
/* if oldtype is a basic, we build a contiguous dataloop of count = 1 */
if (HANDLE_GET_KIND(oldtype) == HANDLE_KIND_BUILTIN)
{
int oldsize = MPID_Datatype_get_basic_size(oldtype);
new_dtp->size = oldsize;
new_dtp->has_sticky_ub = 0;
new_dtp->has_sticky_lb = 0;
new_dtp->dataloop_depth = 1;
new_dtp->true_lb = 0;
new_dtp->lb = lb;
new_dtp->true_ub = oldsize;
new_dtp->ub = lb + extent;
new_dtp->extent = extent;
new_dtp->alignsize = oldsize; /* FIXME ??? */
new_dtp->n_builtin_elements = 1;
new_dtp->builtin_element_size = oldsize;
new_dtp->is_contig = (extent == oldsize) ? 1 : 0;
new_dtp->basic_type = oldtype;
new_dtp->max_contig_blocks = 3; /* lb, data, ub */
}
else
{
/* user-defined base type */
MPID_Datatype *old_dtp;
MPID_Datatype_get_ptr(oldtype, old_dtp);
new_dtp->size = old_dtp->size;
new_dtp->has_sticky_ub = 0;
new_dtp->has_sticky_lb = 0;
new_dtp->dataloop_depth = old_dtp->dataloop_depth;
new_dtp->true_lb = old_dtp->true_lb;
new_dtp->lb = lb;
new_dtp->true_ub = old_dtp->true_ub;
new_dtp->ub = lb + extent;
new_dtp->extent = extent;
new_dtp->alignsize = old_dtp->alignsize;
new_dtp->n_builtin_elements = old_dtp->n_builtin_elements;
new_dtp->builtin_element_size = old_dtp->builtin_element_size;
new_dtp->basic_type = old_dtp->basic_type;
new_dtp->is_contig =
(extent == old_dtp->size) ? old_dtp->is_contig : 0;
new_dtp->max_contig_blocks = old_dtp->max_contig_blocks;
}
*newtype_p = new_dtp->handle;
MPIU_DBG_MSG_P(DATATYPE,VERBOSE,"resized type %x created.",
new_dtp->handle);
return MPI_SUCCESS;
}
/* --BEGIN ERROR HANDLING-- */
static int MPIDI_Type_create_resized_memory_error(void)
{
int mpi_errno;
mpi_errno = MPIR_Err_create_code(MPI_SUCCESS,
MPIR_ERR_RECOVERABLE,
"MPID_Type_create_resized",
__LINE__,
MPI_ERR_OTHER,
"**nomem",
0);
return mpi_errno;
}
/* --END ERROR HANDLING-- */