83 строки
2.5 KiB
C
83 строки
2.5 KiB
C
/*
|
|
* Copyright (c) 2004-2007 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) 2004-2008 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) 2006 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2014 Research Organization for Information Science
|
|
* and Technology (RIST). All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
#include "ompi_config.h"
|
|
#include <stdio.h>
|
|
|
|
#include "ompi/mpi/c/bindings.h"
|
|
#include "ompi/runtime/params.h"
|
|
#include "ompi/communicator/communicator.h"
|
|
#include "ompi/mca/pml/pml.h"
|
|
#include "ompi/request/request.h"
|
|
#include "ompi/errhandler/errhandler.h"
|
|
#include "ompi/memchecker.h"
|
|
|
|
#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
|
|
#pragma weak MPI_Start = PMPI_Start
|
|
#endif
|
|
|
|
#if OMPI_PROFILING_DEFINES
|
|
#include "ompi/mpi/c/profile/defines.h"
|
|
#endif
|
|
|
|
static const char FUNC_NAME[] = "MPI_Start";
|
|
|
|
|
|
int MPI_Start(MPI_Request *request)
|
|
{
|
|
int ret = OMPI_SUCCESS;
|
|
|
|
MEMCHECKER(
|
|
memchecker_request(request);
|
|
);
|
|
|
|
if ( MPI_PARAM_CHECK ) {
|
|
int rc = MPI_SUCCESS;
|
|
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
|
|
if (request == NULL) {
|
|
rc = MPI_ERR_REQUEST;
|
|
}
|
|
OMPI_ERRHANDLER_CHECK(rc, MPI_COMM_WORLD, rc, FUNC_NAME);
|
|
}
|
|
/**
|
|
* Per definition of the handling of persistent request in the
|
|
* MPI standard 3.1 page 78 line 19: we must have the following
|
|
* sequence CREATE (START COMPLETE)* FREE. The upper level is
|
|
* responsible for handling any concurency. The PML must handle
|
|
* this case, as it is the only one knowing if the request can
|
|
* be reused or not (it is PML completed or not?).
|
|
*/
|
|
|
|
switch((*request)->req_type) {
|
|
case OMPI_REQUEST_PML:
|
|
case OMPI_REQUEST_NOOP:
|
|
OPAL_CR_ENTER_LIBRARY();
|
|
|
|
ret = MCA_PML_CALL(start(1, request));
|
|
|
|
OPAL_CR_EXIT_LIBRARY();
|
|
return ret;
|
|
|
|
default:
|
|
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_REQUEST, FUNC_NAME);
|
|
}
|
|
}
|
|
|