/* -*- 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 "attr.h"
/* -- Begin Profiling Symbol Block for routine MPI_Type_get_attr */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Type_get_attr = PMPI_Type_get_attr
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Type_get_attr MPI_Type_get_attr
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Type_get_attr as PMPI_Type_get_attr
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_Type_get_attr(MPI_Datatype datatype, int type_keyval, void *attribute_val, int *flag) __attribute__((weak,alias("PMPI_Type_get_attr")));
#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_get_attr
#define MPI_Type_get_attr PMPI_Type_get_attr
#undef FUNCNAME
#define FUNCNAME MPIR_TypeGetAttr
int MPIR_TypeGetAttr( MPI_Datatype datatype, int type_keyval, void *attribute_val,
int *flag, MPIR_AttrType outAttrType )
{
#ifdef HAVE_ERROR_CHECKING
static const char FCNAME[] = "MPI_Type_get_attr";
#endif
int mpi_errno = MPI_SUCCESS;
MPID_Datatype *type_ptr = NULL;
MPID_Attribute *p;
MPID_MPI_STATE_DECL(MPID_STATE_MPIR_TYPE_GET_ATTR);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPID_MPI_FUNC_ENTER(MPID_STATE_MPIR_TYPE_GET_ATTR);
/* Validate parameters, especially handles needing to be converted */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_DATATYPE(datatype, "datatype", mpi_errno);
MPIR_ERRTEST_KEYVAL(type_keyval, MPID_DATATYPE, "datatype", mpi_errno);
# ifdef NEEDS_POINTER_ALIGNMENT_ADJUST
/* A common user error is to pass the address of a 4-byte
int when the address of a pointer (or an address-sized int)
should have been used. We can test for this specific
case. Note that this code assumes sizeof(MPIU_Pint) is
a power of 2. */
if ((MPIU_Pint)attribute_val & (sizeof(MPIU_Pint)-1)) {
MPIR_ERR_SETANDSTMT(mpi_errno,MPI_ERR_ARG,goto fn_fail,"**attrnotptr");
}
# endif
}
MPID_END_ERROR_CHECKS;
}
# endif
/* Convert MPI object handles to object pointers */
MPID_Datatype_get_ptr( datatype, type_ptr );
/* Validate parameters and objects (post conversion) */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
/* Validate datatype pointer */
MPID_Datatype_valid_ptr( type_ptr, mpi_errno );
/* If type_ptr is not valid, it will be reset to null */
if (mpi_errno) goto fn_fail;
}
MPID_END_ERROR_CHECKS;
}
# endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
*flag = 0;
p = type_ptr->attributes;
while (p) {
if (p->keyval->handle == type_keyval) {
*flag = 1;
if (outAttrType == MPIR_ATTR_PTR) {
if (p->attrType == MPIR_ATTR_INT) {
/* This is the tricky case: if the system is
bigendian, and we have to return a pointer to
an int, then we may need to point to the
correct location in the word. */
#if defined(WORDS_LITTLEENDIAN) || (SIZEOF_VOID_P == SIZEOF_INT)
*(void**)attribute_val = &(p->value);
#else
int *p_loc = (int *)&(p->value);
#if SIZEOF_VOID_P == 2 * SIZEOF_INT
p_loc++;
#else
#error Expected sizeof(void*) to be either sizeof(int) or 2*sizeof(int)
#endif
*(void **)attribute_val = p_loc;
#endif
}
else if (p->attrType == MPIR_ATTR_AINT) {
*(void**)attribute_val = &(p->value);
}
else {
*(void**)attribute_val = (void *)(MPIU_Pint)(p->value);
}
}
else
*(void**)attribute_val = (void *)(MPIU_Pint)(p->value);
break;
}
p = p->next;
}
/* ... end of body of routine ... */
#ifdef HAVE_ERROR_CHECKING
fn_exit:
#endif
MPID_MPI_FUNC_EXIT(MPID_STATE_MPIR_TYPE_GET_ATTR);
MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
return mpi_errno;
/* --BEGIN ERROR HANDLING-- */
# ifdef HAVE_ERROR_CHECKING
fn_fail:
{
mpi_errno = MPIR_Err_create_code(
mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,
"**mpir_type_get_attr",
"**mpir_type_get_attr %D %d %p %p",
datatype, type_keyval, attribute_val, flag);
}
mpi_errno = MPIR_Err_return_comm( NULL, FCNAME, mpi_errno );
goto fn_exit;
# endif
/* --END ERROR HANDLING-- */
}
#endif
#undef FUNCNAME
#define FUNCNAME MPI_Type_get_attr
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
/*@
MPI_Type_get_attr - Retrieves attribute value by key
Input Parameters:
+ datatype - datatype to which the attribute is attached (handle)
- type_keyval - key value (integer)
Output Parameters:
+ attribute_val - attribute value, unless flag = false
- flag - false if no attribute is associated with the key (logical)
Notes:
Attributes must be extracted from the same language as they were inserted
in with 'MPI_Type_set_attr'. The notes for C and Fortran below explain
why.
Notes for C:
Even though the 'attr_value' argument is declared as 'void *', it is
really the address of a void pointer. See the rationale in the
standard for more details.
.N ThreadSafe
.N Fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_KEYVAL
.N MPI_ERR_ARG
@*/
int MPI_Type_get_attr(MPI_Datatype datatype, int type_keyval, void *attribute_val,
int *flag)
{
int mpi_errno = MPI_SUCCESS;
MPID_MPI_STATE_DECL(MPID_STATE_MPI_TYPE_GET_ATTR);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_TYPE_GET_ATTR);
/* ... body of routine ... */
mpi_errno = MPIR_TypeGetAttr( datatype, type_keyval, attribute_val, flag,
MPIR_ATTR_PTR );
if (mpi_errno) goto fn_fail;
/* ... end of body of routine ... */
fn_exit:
MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_TYPE_GET_ATTR);
return mpi_errno;
/* --BEGIN ERROR HANDLING-- */
fn_fail:
#ifdef HAVE_ERROR_CHECKING
{
mpi_errno = MPIR_Err_create_code(
mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,
"**mpi_type_get_attr",
"**mpi_type_get_attr %D %d %p %p",
datatype, type_keyval, attribute_val, flag);
}
#endif
mpi_errno = MPIR_Err_return_comm( NULL, FCNAME, mpi_errno );
goto fn_exit;
/* --END ERROR HANDLING-- */
}