/* -*- 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 "mpir_info.h"
/* -- Begin Profiling Symbol Block for routine MPI_Info_get_nthkey */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Info_get_nthkey = PMPI_Info_get_nthkey
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Info_get_nthkey MPI_Info_get_nthkey
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Info_get_nthkey as PMPI_Info_get_nthkey
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_Info_get_nthkey(MPI_Info info, int n, char *key)
__attribute__ ((weak, alias("PMPI_Info_get_nthkey")));
#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_Info_get_nthkey
#define MPI_Info_get_nthkey PMPI_Info_get_nthkey
#undef FUNCNAME
#define FUNCNAME MPIR_Info_get_nthkey_impl
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
int MPIR_Info_get_nthkey_impl(MPIR_Info * info_ptr, int n, char *key)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Info *curr_ptr;
int nkeys;
curr_ptr = info_ptr->next;
nkeys = 0;
while (curr_ptr && nkeys != n) {
curr_ptr = curr_ptr->next;
nkeys++;
}
/* verify that n is valid */
MPIR_ERR_CHKANDJUMP2((!curr_ptr), mpi_errno, MPI_ERR_ARG, "**infonkey", "**infonkey %d %d", n,
nkeys);
/* if key is MPI_MAX_INFO_KEY long, MPL_strncpy will null-terminate it for
* us */
MPL_strncpy(key, curr_ptr->key, MPI_MAX_INFO_KEY);
/* Eventually, we could remember the location of this key in
* the head using the key/value locations (and a union datatype?) */
fn_exit:
return mpi_errno;
fn_fail:
goto fn_exit;
}
#endif
/*@
MPI_Info_get_nthkey - Returns the nth defined key in info
Input Parameters:
+ info - info object (handle)
- n - key number (integer)
Output Parameters:
. key - key (string). The maximum number of characters is 'MPI_MAX_INFO_KEY'.
.N ThreadSafeInfoRead
.N Fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_OTHER
.N MPI_ERR_ARG
@*/
#undef FUNCNAME
#define FUNCNAME MPI_Info_get_nthkey
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
int MPI_Info_get_nthkey(MPI_Info info, int n, char *key)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Info *info_ptr = 0;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_INFO_GET_NTHKEY);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_INFO_GET_NTHKEY);
/* Validate parameters, especially handles needing to be converted */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_INFO(info, mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* Convert MPI object handles to object pointers */
MPIR_Info_get_ptr(info, info_ptr);
/* Validate parameters and objects (post conversion) */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
/* Validate info_ptr */
MPIR_Info_valid_ptr(info_ptr, mpi_errno);
if (mpi_errno)
goto fn_fail;
MPIR_ERR_CHKANDJUMP((!key), mpi_errno, MPI_ERR_INFO_KEY, "**infokeynull");
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
mpi_errno = MPIR_Info_get_nthkey_impl(info_ptr, n, key);
if (mpi_errno)
goto fn_fail;
/* ... end of body of routine ... */
fn_exit:
MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_INFO_GET_NTHKEY);
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_info_get_nthkey", "**mpi_info_get_nthkey %I %d %p", info, n,
key);
}
#endif
mpi_errno = MPIR_Err_return_comm(NULL, FCNAME, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
}