75 строки
2.5 KiB
C
75 строки
2.5 KiB
C
/*
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* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* 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 (c) 2006-2008 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2015 Research Organization for Information Science
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* and Technology (RIST). 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 <stdio.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <string.h>
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#include "ompi/mpi/c/bindings.h"
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#include "ompi/runtime/params.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/errhandler/errhandler.h"
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#if OMPI_BUILD_MPI_PROFILING
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#if OPAL_HAVE_WEAK_SYMBOLS
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#pragma weak MPI_Get_processor_name = PMPI_Get_processor_name
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#endif
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#define MPI_Get_processor_name PMPI_Get_processor_name
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#endif
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static const char FUNC_NAME[] = "MPI_Get_processor_name";
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int MPI_Get_processor_name(char *name, int *resultlen)
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{
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OPAL_CR_NOOP_PROGRESS();
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if ( MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if ( NULL == name ) {
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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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if ( NULL == resultlen ) {
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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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/* A simple implementation of this function using gethostname.
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Note that MPI-2.1 requires:
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- terminating the string with a \0
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- name[*resultlen] == '\0'
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- and therefore (*resultlen) cannot be > (MPI_MAX_PROCESSOR_NAME-1)
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Guard against gethostname() returning a *really long* hostname
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and not null-terminating the string. The Fortran API version
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will pad to the right if necessary. */
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gethostname(name, (MPI_MAX_PROCESSOR_NAME - 1));
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name[MPI_MAX_PROCESSOR_NAME - 1] = '\0';
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*resultlen = (int) strlen(name);
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return MPI_SUCCESS;
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}
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