31c66d92aa
- bsend_init: use *request after error-checking - Always reset the status->cancelled - cancel, wait: need to check *request for MPI_REQUEST_NULL, not NULL... (actually ompi_request_wait handles MPI_PROC_NULL, so no need to check&set of status_empty in wait.c) This commit was SVN r10972.
90 строки
3.3 KiB
C
90 строки
3.3 KiB
C
/*
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* Copyright (c) 2004-2005 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) 2004-2006 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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* $COPYRIGHT$
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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 "ompi/mpi/c/bindings.h"
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#include "ompi/mca/pml/pml.h"
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#include "ompi/request/request.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Sendrecv = PMPI_Sendrecv
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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_Sendrecv";
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int MPI_Sendrecv(void *sendbuf, int sendcount, MPI_Datatype sendtype,
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int dest, int sendtag, void *recvbuf, int recvcount,
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MPI_Datatype recvtype, int source, int recvtag,
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MPI_Comm comm, MPI_Status *status)
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{
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ompi_request_t* req;
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int rc = MPI_SUCCESS;
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if ( MPI_PARAM_CHECK ) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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OMPI_CHECK_DATATYPE_FOR_SEND(rc, sendtype, sendcount);
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OMPI_CHECK_DATATYPE_FOR_RECV(rc, recvtype, recvcount);
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OMPI_CHECK_USER_BUFFER(rc, sendbuf, sendtype, sendcount);
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OMPI_CHECK_USER_BUFFER(rc, recvbuf, recvtype, recvcount);
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if (ompi_comm_invalid(comm)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, FUNC_NAME);
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} else if (dest != MPI_PROC_NULL && ompi_comm_peer_invalid(comm, dest)) {
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rc = MPI_ERR_RANK;
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} else if (sendtag < 0 || sendtag > mca_pml.pml_max_tag) {
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rc = MPI_ERR_TAG;
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} else if (source != MPI_PROC_NULL && source != MPI_ANY_SOURCE && ompi_comm_peer_invalid(comm, source)) {
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rc = MPI_ERR_RANK;
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} else if (((recvtag < 0) && (recvtag != MPI_ANY_TAG)) || (recvtag > mca_pml.pml_max_tag)) {
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rc = MPI_ERR_TAG;
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}
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OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
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}
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if (source != MPI_PROC_NULL) { /* post recv */
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rc = MCA_PML_CALL(irecv(recvbuf, recvcount, recvtype,
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source, recvtag, comm, &req));
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OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
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}
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if (dest != MPI_PROC_NULL) { /* send */
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rc = MCA_PML_CALL(send(sendbuf, sendcount, sendtype, dest,
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sendtag, MCA_PML_BASE_SEND_STANDARD, comm));
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OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
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}
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if (source != MPI_PROC_NULL) { /* wait for recv */
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rc = ompi_request_wait(&req, status);
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} else {
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if (MPI_STATUS_IGNORE != status) {
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status->MPI_SOURCE = MPI_PROC_NULL;
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status->MPI_TAG = MPI_ANY_TAG;
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status->MPI_ERROR = MPI_SUCCESS;
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status->_count = 0;
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status->_cancelled = 0;
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}
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rc = MPI_SUCCESS;
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}
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OMPI_ERRHANDLER_RETURN(rc, comm, rc, FUNC_NAME);
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}
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