/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
* (C) 2002 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
#include "mpiimpl.h"
#include "datatype.h"
/* -- Begin Profiling Symbol Block for routine MPI_Type_contigous */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Type_contiguous = PMPI_Type_contiguous
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Type_contiguous MPI_Type_contiguous
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Type_contiguous as PMPI_Type_contiguous
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_Type_contiguous(int count, MPI_Datatype oldtype, MPI_Datatype * newtype)
__attribute__ ((weak, alias("PMPI_Type_contiguous")));
#endif
/* -- End Profiling Symbol Block */
/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build
the MPI routines. You can use USE_WEAK_SYMBOLS to see if MPICH is
using weak symbols to implement the MPI routines. */
#ifndef MPICH_MPI_FROM_PMPI
#undef MPI_Type_contiguous
#define MPI_Type_contiguous PMPI_Type_contiguous
/*@
MPIR_Type_contiguous - create a contiguous datatype
Input Parameters:
+ count - number of elements in the contiguous block
- oldtype - type (using handle) of datatype on which vector is based
Output Parameters:
. newtype - handle of new contiguous datatype
Return Value:
MPI_SUCCESS on success, MPI error code on failure.
@*/
int MPIR_Type_contiguous(int count, MPI_Datatype oldtype, MPI_Datatype * newtype)
{
int mpi_errno = MPI_SUCCESS;
int is_builtin;
MPI_Aint el_sz;
MPI_Datatype el_type;
MPIR_Datatype *new_dtp;
if (count == 0)
return MPII_Type_zerolen(newtype);
/* allocate new datatype object and handle */
new_dtp = (MPIR_Datatype *) MPIR_Handle_obj_alloc(&MPIR_Datatype_mem);
/* --BEGIN ERROR HANDLING-- */
if (!new_dtp) {
mpi_errno = MPIR_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
"MPIR_Type_contiguous",
__LINE__, MPI_ERR_OTHER, "**nomem", 0);
return mpi_errno;
}
/* --END ERROR HANDLING-- */
/* handle is filled in by MPIR_Handle_obj_alloc() */
MPIR_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;
is_builtin = (HANDLE_GET_KIND(oldtype) == HANDLE_KIND_BUILTIN);
if (is_builtin) {
el_sz = MPIR_Datatype_get_basic_size(oldtype);
el_type = oldtype;
new_dtp->size = count * el_sz;
new_dtp->has_sticky_ub = 0;
new_dtp->has_sticky_lb = 0;
new_dtp->true_lb = 0;
new_dtp->lb = 0;
new_dtp->true_ub = count * el_sz;
new_dtp->ub = new_dtp->true_ub;
new_dtp->extent = new_dtp->ub - new_dtp->lb;
new_dtp->alignsize = el_sz;
new_dtp->n_builtin_elements = count;
new_dtp->builtin_element_size = el_sz;
new_dtp->basic_type = el_type;
new_dtp->is_contig = 1;
new_dtp->max_contig_blocks = 1;
} else {
/* user-defined base type (oldtype) */
MPIR_Datatype *old_dtp;
MPIR_Datatype_get_ptr(oldtype, old_dtp);
el_sz = old_dtp->builtin_element_size;
el_type = old_dtp->basic_type;
new_dtp->size = count * old_dtp->size;
new_dtp->has_sticky_ub = old_dtp->has_sticky_ub;
new_dtp->has_sticky_lb = old_dtp->has_sticky_lb;
MPII_DATATYPE_CONTIG_LB_UB((MPI_Aint) count,
old_dtp->lb,
old_dtp->ub, old_dtp->extent, new_dtp->lb, new_dtp->ub);
/* easiest to calc true lb/ub relative to lb/ub; doesn't matter
* if there are sticky lb/ubs or not when doing this.
*/
new_dtp->true_lb = new_dtp->lb + (old_dtp->true_lb - old_dtp->lb);
new_dtp->true_ub = new_dtp->ub + (old_dtp->true_ub - old_dtp->ub);
new_dtp->extent = new_dtp->ub - new_dtp->lb;
new_dtp->alignsize = old_dtp->alignsize;
new_dtp->n_builtin_elements = count * old_dtp->n_builtin_elements;
new_dtp->builtin_element_size = old_dtp->builtin_element_size;
new_dtp->basic_type = el_type;
MPIR_Datatype_is_contig(oldtype, &new_dtp->is_contig);
if (new_dtp->is_contig)
new_dtp->max_contig_blocks = 1;
else
new_dtp->max_contig_blocks = count * old_dtp->max_contig_blocks;
}
*newtype = new_dtp->handle;
MPL_DBG_MSG_P(MPIR_DBG_DATATYPE, VERBOSE, "contig type %x created.", new_dtp->handle);
return mpi_errno;
}
#undef FUNCNAME
#define FUNCNAME MPIR_Type_contiguous_impl
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
int MPIR_Type_contiguous_impl(int count, MPI_Datatype oldtype, MPI_Datatype * newtype)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Datatype *new_dtp;
MPI_Datatype new_handle;
mpi_errno = MPIR_Type_contiguous(count, oldtype, &new_handle);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_Datatype_get_ptr(new_handle, new_dtp);
mpi_errno = MPIR_Datatype_set_contents(new_dtp, MPI_COMBINER_CONTIGUOUS, 1, /* ints (count) */
0, 1, &count, NULL, &oldtype);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_OBJ_PUBLISH_HANDLE(*newtype, new_handle);
fn_exit:
return mpi_errno;
fn_fail:
goto fn_exit;
}
#undef FUNCNAME
#define FUNCNAME MPIR_Type_contiguous_x_impl
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
int MPIR_Type_contiguous_x_impl(MPI_Count count, MPI_Datatype oldtype, MPI_Datatype * newtype)
{
/* to make 'count' fit MPI-3 type processing routines (which take integer
* counts), we construct a type consisting of N INT_MAX chunks followed by
* a remainder. e.g for a count of 4000000000 bytes you would end up with
* one 2147483647-byte chunk followed immediately by a 1852516353-byte
* chunk */
MPI_Datatype chunks, remainder;
MPI_Aint lb, extent, disps[2];
int blocklens[2];
MPI_Datatype types[2];
int mpi_errno;
/* truly stupendously large counts will overflow an integer with this math,
* but that is a problem for a few decades from now. Sorry, few decades
* from now! */
MPIR_Assert(count / INT_MAX == (int) (count / INT_MAX));
int c = (int) (count / INT_MAX); /* OK to cast until 'count' is 256 bits */
int r = count % INT_MAX;
mpi_errno = MPIR_Type_vector_impl(c, INT_MAX, INT_MAX, oldtype, &chunks);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
mpi_errno = MPIR_Type_contiguous_impl(r, oldtype, &remainder);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_Type_get_extent_impl(oldtype, &lb, &extent);
blocklens[0] = 1;
blocklens[1] = 1;
disps[0] = 0;
disps[1] = c * extent * INT_MAX;
types[0] = chunks;
types[1] = remainder;
mpi_errno = MPIR_Type_create_struct_impl(2, blocklens, disps, types, newtype);
MPIR_Type_free_impl(&chunks);
MPIR_Type_free_impl(&remainder);
fn_exit:
return mpi_errno;
fn_fail:
goto fn_exit;
}
#endif
#undef FUNCNAME
#define FUNCNAME MPI_Type_contiguous
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
/*@
MPI_Type_contiguous - Creates a contiguous datatype
Input Parameters:
+ count - replication count (nonnegative integer)
- oldtype - old datatype (handle)
Output Parameters:
. newtype - new datatype (handle)
.N ThreadSafe
.N Fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_TYPE
.N MPI_ERR_COUNT
.N MPI_ERR_EXHAUSTED
@*/
int MPI_Type_contiguous(int count, MPI_Datatype oldtype, MPI_Datatype * newtype)
{
int mpi_errno = MPI_SUCCESS;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_TYPE_CONTIGUOUS);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_TYPE_CONTIGUOUS);
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_Datatype *datatype_ptr = NULL;
MPIR_ERRTEST_COUNT(count, mpi_errno);
MPIR_ERRTEST_DATATYPE(oldtype, "datatype", mpi_errno);
if (HANDLE_GET_KIND(oldtype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(oldtype, datatype_ptr);
MPIR_Datatype_valid_ptr(datatype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
}
MPIR_ERRTEST_ARGNULL(newtype, "newtype", mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
mpi_errno = MPIR_Type_contiguous_impl(count, oldtype, newtype);
if (mpi_errno)
MPIR_ERR_POP(mpi_errno);
/* ... end of body of routine ... */
fn_exit:
MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_TYPE_CONTIGUOUS);
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_contiguous", "**mpi_type_contiguous %d %D %p", count,
oldtype, newtype);
}
#endif
mpi_errno = MPIR_Err_return_comm(NULL, FCNAME, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
}