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openmpi/ompi/mpi/c/get_processor_name.c

71 строка
2.0 KiB
C
Исходник Обычный вид История

/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include "ompi/mpi/c/bindings.h"
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Get_processor_name = PMPI_Get_processor_name
#endif
#if OMPI_PROFILING_DEFINES
#include "ompi/mpi/c/profile/defines.h"
#endif
static const char FUNC_NAME[] = "MPI_Get_processor_name";
int MPI_Get_processor_name(char *name, int *resultlen)
{
char tmp[MPI_MAX_PROCESSOR_NAME];
int len;
if ( MPI_PARAM_CHECK) {
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
if ( NULL == name ) {
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
FUNC_NAME);
}
if ( NULL == resultlen ) {
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
FUNC_NAME);
}
}
/* A simple implementation of this function using gethostname*/
gethostname (tmp, MPI_MAX_PROCESSOR_NAME);
len = strlen (tmp);
strncpy ( name, tmp, len);
if ( MPI_MAX_PROCESSOR_NAME > len ) {
*resultlen = len;
name[len] = '\0';
}
else {
*resultlen = MPI_MAX_PROCESSOR_NAME-1;
name[MPI_MAX_PROCESSOR_NAME-1] = '\0';
}
return MPI_SUCCESS;
}