86 строки
2.6 KiB
C
86 строки
2.6 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) 2004-2008 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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* $COPYRIGHT$
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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 <string.h>
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#include "ompi/mpi/c/bindings.h"
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#include "opal/util/strncpy.h"
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#include "ompi/totalview.h"
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#include "opal/threads/mutex.h"
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#include "ompi/memchecker.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Comm_get_name = PMPI_Comm_get_name
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "ompi/mpi/c/profile/defines.h"
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#endif
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static const char FUNC_NAME[] = "MPI_Comm_get_name";
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int MPI_Comm_get_name(MPI_Comm comm, char *name, int *length)
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{
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MEMCHECKER(
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memchecker_comm(comm);
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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 ( ompi_comm_invalid ( comm ) )
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return OMPI_ERRHANDLER_INVOKE ( MPI_COMM_WORLD, MPI_ERR_COMM,
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FUNC_NAME);
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if ( NULL == name || NULL == length )
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return OMPI_ERRHANDLER_INVOKE ( comm, MPI_ERR_ARG,
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FUNC_NAME);
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}
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#ifdef USE_MUTEX_FOR_COMMS
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OPAL_THREAD_LOCK(&(comm->c_lock));
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#endif
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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_OBJECT_NAME-1)
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The Fortran API version will pad to the right if necessary.
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Note that comm->c_name is guaranteed to be \0-terminated and
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able to completely fit into MPI_MAX_OBJECT_NAME bytes (i.e.,
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name+\0). */
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if ( comm->c_flags & OMPI_COMM_NAMEISSET ) {
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strncpy(name, comm->c_name, MPI_MAX_OBJECT_NAME);
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*length = (int) strlen(comm->c_name);
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} else {
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name[0] = '\0';
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*length = 0;
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}
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#ifdef USE_MUTEX_FOR_COMMS
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OPAL_THREAD_UNLOCK(&(comm->c_lock));
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#endif
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return MPI_SUCCESS;
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}
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