95fd068ffa
the values to the PML structure. This will allow PMLs that want to do hardware matching at the cost of a smaller range of valid tags and cids. Updated all the places that used the MPI_TAG_UB_VALUE constant to instead look at the pml struct. This commit was SVN r6778.
129 строки
4.5 KiB
C
129 строки
4.5 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights reserved.
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* Copyright (c) 2004-2005 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 <stdio.h>
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#include "mpi.h"
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#include "mpi/c/bindings.h"
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#include "communicator/communicator.h"
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#include "datatype/datatype.h"
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#include "datatype/convertor.h"
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#include "errhandler/errhandler.h"
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#include "ompi/mca/pml/pml.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Sendrecv_replace = PMPI_Sendrecv_replace
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "mpi/c/profile/defines.h"
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#endif
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static const char FUNC_NAME[] = "MPI_Sendrecv_replace";
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int MPI_Sendrecv_replace(void * buf, int count, MPI_Datatype datatype,
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int dest, int sendtag, int source, int recvtag,
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MPI_Comm comm, MPI_Status *status)
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{
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int rc;
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if ( MPI_PARAM_CHECK ) {
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rc = MPI_SUCCESS;
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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, FUNC_NAME);
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} else if (count < 0) {
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rc = MPI_ERR_COUNT;
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} else if (datatype == MPI_DATATYPE_NULL) {
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rc = MPI_ERR_TYPE;
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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_CALL(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_CALL(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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/* simple case */
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if ( source == MPI_PROC_NULL || dest == MPI_PROC_NULL || count == 0 ) {
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return MPI_Sendrecv(buf,count,datatype,dest,sendtag,buf,count,datatype,source,recvtag,comm,status);
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} else {
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ompi_convertor_t convertor;
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struct iovec iov;
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unsigned char recv_data[2048];
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size_t packed_size, max_data;
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uint32_t iov_count;
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int free_after;
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ompi_status_public_t recv_status;
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ompi_proc_t* proc = ompi_comm_peer_lookup(comm,dest);
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if(proc == NULL) {
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rc = MPI_ERR_RANK;
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OMPI_ERRHANDLER_RETURN(rc, comm, rc, FUNC_NAME);
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}
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/* initialize convertor to unpack recv buffer */
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OBJ_CONSTRUCT(&convertor, ompi_convertor_t);
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ompi_convertor_copy_and_prepare_for_recv( proc->proc_convertor, datatype,
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count, buf, &convertor );
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/* setup a buffer for recv */
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ompi_convertor_get_packed_size( &convertor, &packed_size );
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if( packed_size > sizeof(recv_data) ) {
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iov.iov_base = (caddr_t)malloc(packed_size);
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if(iov.iov_base == NULL) {
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OMPI_ERRHANDLER_RETURN(OMPI_ERR_OUT_OF_RESOURCE, comm, MPI_ERR_BUFFER, FUNC_NAME);
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}
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} else {
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iov.iov_base = (caddr_t)recv_data;
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}
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/* recv into temporary buffer */
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rc = MPI_Sendrecv( buf, count, datatype, dest, sendtag, iov.iov_base, packed_size,
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MPI_BYTE, source, recvtag, comm, &recv_status );
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if (rc != MPI_SUCCESS) {
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if(packed_size > sizeof(recv_data))
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free(iov.iov_base);
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OBJ_DESTRUCT(&convertor);
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OMPI_ERRHANDLER_RETURN(rc, comm, rc, FUNC_NAME);
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}
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/* unpack into users buffer */
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iov.iov_len = recv_status._count;
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iov_count = 1;
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max_data = recv_status._count;
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ompi_convertor_unpack(&convertor, &iov, &iov_count, &max_data, &free_after);
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/* return status to user */
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if(status != MPI_STATUS_IGNORE) {
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*status = recv_status;
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}
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/* release resources */
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if(packed_size > sizeof(recv_data)) {
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free(iov.iov_base);
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}
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OBJ_DESTRUCT(&convertor);
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return MPI_SUCCESS;
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}
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}
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