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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2020 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2013 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2016-2017 IBM Corporation. All rights reserved.
* Copyright (c) 2021-2022 Triad National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/communicator/communicator.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/info/info.h"
#include "opal/util/string_copy.h"
#include <stdlib.h>
#include <string.h>
#if OMPI_BUILD_MPI_PROFILING
#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_Info_get_string = PMPI_Info_get_string
#endif
#define MPI_Info_get_string PMPI_Info_get_string
#endif
static const char FUNC_NAME[] = "MPI_Info_get_string";
/**
* MPI_Info_get_string - Get a (key, value) pair from an 'MPI_Info' object
*
* @param info info object (handle)
* @param key null-terminated character string of the index key
* @param buflen maximum length of 'value' (integer)
* @param value null-terminated character string of the value
* @param flag true (1) if 'key' defined on 'info', false (0) if not
* (logical)
*
* @retval MPI_SUCCESS
* @retval MPI_ERR_ARG
* @retval MPI_ERR_INFO
* @retval MPI_ERR_INFO_KEY
* @retval MPI_ERR_INFO_VALUE
*
*/
int MPI_Info_get_string(MPI_Info info, const char *key, int *buflen,
char *value, int *flag)
{
int err;
int key_length;
opal_cstring_t *info_str;
/*
* Simple function. All we need to do is search for the value
* having the "key" associated with it and then populate the
* necessary structures.
*/
if (MPI_PARAM_CHECK) {
if (NULL == info || MPI_INFO_NULL == info ||
ompi_info_is_freed(info)) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_INFO,
FUNC_NAME);
}
key_length = (key) ? (int)strlen (key) : 0;
if ((NULL == key) || (0 == key_length) ||
(MPI_MAX_INFO_KEY <= key_length)) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_INFO_KEY,
FUNC_NAME);
}
if (NULL == buflen) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_ARG,
FUNC_NAME);
}
if ((NULL == value) && *buflen) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_INFO_VALUE,
FUNC_NAME);
}
if (NULL == flag) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_ARG,
FUNC_NAME);
}
}
if (0 == *buflen) {
err = ompi_info_get_valuelen(info, key, buflen, flag);
if (1 == *flag) {
*buflen += 1; /* add on for the \0, see MPI 4.0 Standard */
}
} else {
err = ompi_info_get(info, key, &info_str, flag);
if (*flag) {
opal_string_copy(value, info_str->string, *buflen);
*buflen = info_str->length + 1; /* add on for the \0, see MPI 4.0 Standard */
OBJ_RELEASE(info_str);
}
}
OMPI_ERRHANDLER_NOHANDLE_RETURN(err, err, FUNC_NAME);
}
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