100 строки
3.2 KiB
C
100 строки
3.2 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include "mpi.h"
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#include "mpi/c/bindings.h"
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#include "class/ompi_list.h"
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#include "info/info.h"
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#include "util/strncpy.h"
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#include <stdlib.h>
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#include <string.h>
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#include "errhandler/errhandler.h"
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#include "communicator/communicator.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Info_get = PMPI_Info_get
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "mpi/c/profile/defines.h"
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#endif
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static const char FUNC_NAME[] = "MPI_Info_get";
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/**
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* MPI_Info_get - Get a (key, value) pair from an 'MPI_Info' object
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*
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* @param info info object (handle)
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* @param key null-terminated character string of the index key
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* @param valuelen maximum length of 'value' (integer)
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* @param value null-terminated character string of the value
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* @param flag true (1) if 'key' defined on 'info', false (0) if not
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* (logical)
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*
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* @retval MPI_SUCCESS
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* @retval MPI_ERR_ARG
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* @retval MPI_ERR_INFO
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* @retval MPI_ERR_INFO_KEY
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* @retval MPI_ERR_INFO_VALUE
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*
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* In C and C++, 'valuelen' should be one less than the allocated space
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* to allow for for the null terminator.
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*/
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int MPI_Info_get(MPI_Info info, char *key, int valuelen,
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char *value, int *flag)
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{
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int err;
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int key_length;
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/*
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* Simple function. All we need to do is search for the value
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* having the "key" associated with it and then populate the
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* necessary structures.
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*/
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if (MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (NULL == info || MPI_INFO_NULL == info ||
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ompi_info_is_freed(info)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_INFO,
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FUNC_NAME);
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}
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if (0 > valuelen){
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
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FUNC_NAME);
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}
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key_length = (key) ? strlen (key) : 0;
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if ((NULL == key) || (0 == key_length) ||
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(MPI_MAX_INFO_KEY <= key_length)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_INFO_KEY,
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FUNC_NAME);
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}
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if (NULL == value) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_INFO_VALUE,
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FUNC_NAME);
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}
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if (NULL == flag) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
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FUNC_NAME);
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}
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}
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err = ompi_info_get (info, key, valuelen, value, flag);
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OMPI_ERRHANDLER_RETURN(err, MPI_COMM_WORLD, err, FUNC_NAME);
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}
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