15c4ae3391
Any non-blocking P2P function should set the request to something else then MPI_REQUEST_NULL, when passed a source/dest of MPI_PROC_NULL. Introduce a new ompi_request_empty, which returns the MPI_SOURCE=MPI_PROC_NULL, MPI_TAG=MPI_ANY_TAG, count=0 as specified by the MPI-standard. This commit was SVN r6611.
67 строки
2.0 KiB
C
67 строки
2.0 KiB
C
/*
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University.
|
|
* All rights reserved.
|
|
* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
|
|
* 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 "mpi.h"
|
|
#include "mpi/c/bindings.h"
|
|
#include "mca/pml/pml.h"
|
|
|
|
|
|
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
|
|
#pragma weak MPI_Irecv = PMPI_Irecv
|
|
#endif
|
|
|
|
#if OMPI_PROFILING_DEFINES
|
|
#include "mpi/c/profile/defines.h"
|
|
#endif
|
|
|
|
static const char FUNC_NAME[] = "MPI_Irecv";
|
|
|
|
|
|
int MPI_Irecv(void *buf, int count, MPI_Datatype type, int source,
|
|
int tag, MPI_Comm comm, MPI_Request *request)
|
|
{
|
|
int rc;
|
|
if (source == MPI_PROC_NULL) {
|
|
*request = &ompi_request_empty;
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
if ( MPI_PARAM_CHECK ) {
|
|
rc = MPI_SUCCESS;
|
|
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
|
|
if (ompi_comm_invalid(comm)) {
|
|
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, FUNC_NAME);
|
|
} else if (count < 0) {
|
|
rc = MPI_ERR_COUNT;
|
|
} else if (type == MPI_DATATYPE_NULL) {
|
|
rc = MPI_ERR_TYPE;
|
|
} else if (((tag < 0) && (tag != MPI_ANY_TAG)) || (tag > MPI_TAG_UB_VALUE)) {
|
|
rc = MPI_ERR_TAG;
|
|
} else if (source != MPI_ANY_SOURCE &&
|
|
source != MPI_PROC_NULL &&
|
|
ompi_comm_peer_invalid(comm, source)) {
|
|
rc = MPI_ERR_RANK;
|
|
}
|
|
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
|
|
}
|
|
|
|
rc = MCA_PML_CALL(irecv(buf,count,type,source,tag,comm,request));
|
|
OMPI_ERRHANDLER_RETURN(rc, comm, rc, FUNC_NAME);
|
|
}
|
|
|