/* -*- 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_create_subarray */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Type_create_subarray = PMPI_Type_create_subarray
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Type_create_subarray MPI_Type_create_subarray
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Type_create_subarray as PMPI_Type_create_subarray
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_Type_create_subarray(int ndims, const int array_of_sizes[],
const int array_of_subsizes[], const int array_of_starts[],
int order, MPI_Datatype oldtype, MPI_Datatype *newtype) __attribute__((weak,alias("PMPI_Type_create_subarray")));
#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_create_subarray
#define MPI_Type_create_subarray PMPI_Type_create_subarray
#endif
#undef FUNCNAME
#define FUNCNAME MPI_Type_create_subarray
/*@
MPI_Type_create_subarray - Create a datatype for a subarray of a regular,
multidimensional array
Input Parameters:
+ ndims - number of array dimensions (positive integer)
. array_of_sizes - number of elements of type oldtype in each dimension of the
full array (array of positive integers)
. array_of_subsizes - number of elements of type oldtype in each dimension of
the subarray (array of positive integers)
. array_of_starts - starting coordinates of the subarray in each dimension
(array of nonnegative integers)
. order - array storage order flag (state)
- oldtype - array element datatype (handle)
Output Parameters:
. newtype - new datatype (handle)
.N ThreadSafe
.N Fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_TYPE
.N MPI_ERR_ARG
@*/
int MPI_Type_create_subarray(int ndims,
const int array_of_sizes[],
const int array_of_subsizes[],
const int array_of_starts[],
int order,
MPI_Datatype oldtype,
MPI_Datatype *newtype)
{
static const char FCNAME[] = "MPI_Type_create_subarray";
int mpi_errno = MPI_SUCCESS, i;
MPI_Datatype new_handle;
/* these variables are from the original version in ROMIO */
MPI_Aint size, extent, disps[3];
MPI_Datatype tmp1, tmp2;
# ifdef HAVE_ERROR_CHECKING
MPI_Aint size_with_aint;
MPI_Offset size_with_offset;
# endif
/* for saving contents */
int *ints;
MPID_Datatype *new_dtp;
MPIU_CHKLMEM_DECL(1);
MPID_MPI_STATE_DECL(MPID_STATE_MPI_TYPE_CREATE_SUBARRAY);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_TYPE_CREATE_SUBARRAY);
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPID_Datatype *datatype_ptr = NULL;
/* Check parameters */
MPIR_ERRTEST_ARGNONPOS(ndims, "ndims", mpi_errno, MPI_ERR_DIMS);
MPIR_ERRTEST_ARGNULL(array_of_sizes, "array_of_sizes", mpi_errno);
MPIR_ERRTEST_ARGNULL(array_of_subsizes, "array_of_subsizes", mpi_errno);
MPIR_ERRTEST_ARGNULL(array_of_starts, "array_of_starts", mpi_errno);
for (i=0; mpi_errno == MPI_SUCCESS && i < ndims; i++) {
MPIR_ERRTEST_ARGNONPOS(array_of_sizes[i], "size", mpi_errno, MPI_ERR_ARG);
MPIR_ERRTEST_ARGNONPOS(array_of_subsizes[i], "subsize", mpi_errno, MPI_ERR_ARG);
MPIR_ERRTEST_ARGNEG(array_of_starts[i], "start", mpi_errno);
if (array_of_subsizes[i] > array_of_sizes[i]) {
mpi_errno = MPIR_Err_create_code(MPI_SUCCESS,
MPIR_ERR_RECOVERABLE,
FCNAME,
__LINE__,
MPI_ERR_ARG,
"**argrange",
"**argrange %s %d %d",
"array_of_subsizes",
array_of_subsizes[i],
array_of_sizes[i]);
goto fn_fail;
}
if (array_of_starts[i] > (array_of_sizes[i] - array_of_subsizes[i]))
{
mpi_errno = MPIR_Err_create_code(MPI_SUCCESS,
MPIR_ERR_RECOVERABLE,
FCNAME,
__LINE__,
MPI_ERR_ARG,
"**argrange",
"**argrange %s %d %d",
"array_of_starts",
array_of_starts[i],
array_of_sizes[i] -
array_of_subsizes[i]);
goto fn_fail;
}
}
if (order != MPI_ORDER_FORTRAN && order != MPI_ORDER_C) {
mpi_errno = MPIR_Err_create_code(MPI_SUCCESS,
MPIR_ERR_RECOVERABLE,
FCNAME,
__LINE__,
MPI_ERR_ARG,
"**arg",
"**arg %s",
"order");
goto fn_fail;
}
MPIR_Type_extent_impl(oldtype, &extent);
/* check if MPI_Aint is large enough for size of global array.
if not, complain. */
size_with_aint = extent;
for (i=0; i<ndims; i++) size_with_aint *= array_of_sizes[i];
size_with_offset = extent;
for (i=0; i<ndims; i++) size_with_offset *= array_of_sizes[i];
if (size_with_aint != size_with_offset) {
mpi_errno = MPIR_Err_create_code(MPI_SUCCESS,
MPIR_ERR_FATAL,
FCNAME,
__LINE__,
MPI_ERR_ARG,
"**subarrayoflow",
"**subarrayoflow %L",
size_with_offset);
goto fn_fail;
}
/* Get handles to MPI objects. */
MPID_Datatype_get_ptr(oldtype, datatype_ptr);
/* Validate datatype_ptr */
MPID_Datatype_valid_ptr(datatype_ptr, mpi_errno);
/* If datatype_ptr is not valid, it will be reset to null */
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
MPID_END_ERROR_CHECKS;
}
# endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
/* TODO: CHECK THE ERROR RETURNS FROM ALL THESE!!! */
/* TODO: GRAB EXTENT WITH A MACRO OR SOMETHING FASTER */
MPIR_Type_extent_impl(oldtype, &extent);
if (order == MPI_ORDER_FORTRAN) {
if (ndims == 1)
mpi_errno = MPID_Type_contiguous(array_of_subsizes[0],
oldtype,
&tmp1);
else {
mpi_errno = MPID_Type_vector(array_of_subsizes[1],
array_of_subsizes[0],
(MPI_Aint)(array_of_sizes[0]),
0, /* stride in types */
oldtype,
&tmp1);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
size = ((MPI_Aint)(array_of_sizes[0])) * extent;
for (i=2; i<ndims; i++) {
size *= (MPI_Aint)(array_of_sizes[i-1]);
mpi_errno = MPID_Type_vector(array_of_subsizes[i],
1,
size,
1, /* stride in bytes */
tmp1,
&tmp2);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
MPIR_Type_free_impl(&tmp1);
tmp1 = tmp2;
}
}
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
/* add displacement and UB */
disps[1] = (MPI_Aint)(array_of_starts[0]);
size = 1;
for (i=1; i<ndims; i++) {
size *= (MPI_Aint)(array_of_sizes[i-1]);
disps[1] += size * (MPI_Aint)(array_of_starts[i]);
}
/* rest done below for both Fortran and C order */
}
else /* MPI_ORDER_C */ {
/* dimension ndims-1 changes fastest */
if (ndims == 1) {
mpi_errno = MPID_Type_contiguous(array_of_subsizes[0],
oldtype,
&tmp1);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
}
else {
mpi_errno = MPID_Type_vector(array_of_subsizes[ndims-2],
array_of_subsizes[ndims-1],
(MPI_Aint)(array_of_sizes[ndims-1]),
0, /* stride in types */
oldtype,
&tmp1);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
size = (MPI_Aint)(array_of_sizes[ndims-1]) * extent;
for (i=ndims-3; i>=0; i--) {
size *= (MPI_Aint)(array_of_sizes[i+1]);
mpi_errno = MPID_Type_vector(array_of_subsizes[i],
1, /* blocklen */
size, /* stride */
1, /* stride in bytes */
tmp1, /* old type */
&tmp2);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
MPIR_Type_free_impl(&tmp1);
tmp1 = tmp2;
}
}
/* add displacement and UB */
disps[1] = (MPI_Aint)(array_of_starts[ndims-1]);
size = 1;
for (i=ndims-2; i>=0; i--) {
size *= (MPI_Aint)(array_of_sizes[i+1]);
disps[1] += size * (MPI_Aint)(array_of_starts[i]);
}
}
disps[1] *= extent;
disps[2] = extent;
for (i=0; i<ndims; i++) disps[2] *= (MPI_Aint)(array_of_sizes[i]);
disps[0] = 0;
/* Instead of using MPI_LB/MPI_UB, which have been removed from MPI in MPI-3,
use MPI_Type_create_resized. Use hindexed_block to set the starting displacement
of the datatype (disps[1]) and type_create_resized to set lb to 0 (disps[0])
and extent to disps[2], which makes ub = disps[2].
*/
mpi_errno = MPID_Type_blockindexed(1, 1, &disps[1],
1, /* 1 means disp is in bytes */
tmp1, &tmp2);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
mpi_errno = MPID_Type_create_resized(tmp2, 0, disps[2], &new_handle);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
MPIR_Type_free_impl(&tmp1);
MPIR_Type_free_impl(&tmp2);
/* at this point we have the new type, and we've cleaned up any
* intermediate types created in the process. we just need to save
* all our contents/envelope information.
*/
/* Save contents */
MPIU_CHKLMEM_MALLOC_ORJUMP(ints, int *, (3 * ndims + 2) * sizeof(int), mpi_errno, "content description");
ints[0] = ndims;
for (i=0; i < ndims; i++) {
ints[i + 1] = array_of_sizes[i];
}
for(i=0; i < ndims; i++) {
ints[i + ndims + 1] = array_of_subsizes[i];
}
for(i=0; i < ndims; i++) {
ints[i + 2*ndims + 1] = array_of_starts[i];
}
ints[3*ndims + 1] = order;
MPID_Datatype_get_ptr(new_handle, new_dtp);
mpi_errno = MPID_Datatype_set_contents(new_dtp,
MPI_COMBINER_SUBARRAY,
3 * ndims + 2, /* ints */
0, /* aints */
1, /* types */
ints,
NULL,
&oldtype);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
MPID_OBJ_PUBLISH_HANDLE(*newtype, new_handle);
/* ... end of body of routine ... */
fn_exit:
MPIU_CHKLMEM_FREEALL();
MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_TYPE_CREATE_SUBARRAY);
MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
return mpi_errno;
fn_fail:
/* --BEGIN ERROR HANDLING-- */
# ifdef HAVE_ERROR_CHECKING
{
mpi_errno = MPIR_Err_create_code(
mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER, "**mpi_type_create_subarray",
"**mpi_type_create_subarray %d %p %p %p %d %D %p", ndims, array_of_sizes, array_of_subsizes,
array_of_starts, order, oldtype, newtype);
}
# endif
mpi_errno = MPIR_Err_return_comm(NULL, FCNAME, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
}