126 строки
4.5 KiB
C
126 строки
4.5 KiB
C
/*
|
|
* Copyright (c) 2004-2005 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) 2004-2005 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 "ompi/mpi/c/bindings.h"
|
|
#include "ompi/datatype/datatype.h"
|
|
#include "ompi/datatype/convertor.h"
|
|
#include "ompi/mca/pml/pml.h"
|
|
#include "ompi/proc/proc.h"
|
|
|
|
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
|
|
#pragma weak MPI_Sendrecv_replace = PMPI_Sendrecv_replace
|
|
#endif
|
|
|
|
#if OMPI_PROFILING_DEFINES
|
|
#include "ompi/mpi/c/profile/defines.h"
|
|
#endif
|
|
|
|
static const char FUNC_NAME[] = "MPI_Sendrecv_replace";
|
|
|
|
|
|
int MPI_Sendrecv_replace(void * buf, int count, MPI_Datatype datatype,
|
|
int dest, int sendtag, int source, int recvtag,
|
|
MPI_Comm comm, MPI_Status *status)
|
|
|
|
{
|
|
int rc = MPI_SUCCESS;
|
|
|
|
if ( MPI_PARAM_CHECK ) {
|
|
rc = MPI_SUCCESS;
|
|
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
|
|
OMPI_CHECK_DATATYPE_FOR_RECV(rc, datatype, count);
|
|
|
|
if (ompi_comm_invalid(comm)) {
|
|
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, FUNC_NAME);
|
|
} else if (dest != MPI_PROC_NULL && ompi_comm_peer_invalid(comm, dest)) {
|
|
rc = MPI_ERR_RANK;
|
|
} else if (sendtag < 0 || sendtag > mca_pml.pml_max_tag) {
|
|
rc = MPI_ERR_TAG;
|
|
} else if (source != MPI_PROC_NULL && source != MPI_ANY_SOURCE && ompi_comm_peer_invalid(comm, source)) {
|
|
rc = MPI_ERR_RANK;
|
|
} else if (((recvtag < 0) && (recvtag != MPI_ANY_TAG)) || (recvtag > mca_pml.pml_max_tag)) {
|
|
rc = MPI_ERR_TAG;
|
|
}
|
|
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
|
|
}
|
|
|
|
/* simple case */
|
|
if ( source == MPI_PROC_NULL || dest == MPI_PROC_NULL || count == 0 ) {
|
|
return MPI_Sendrecv(buf,count,datatype,dest,sendtag,buf,count,datatype,source,recvtag,comm,status);
|
|
} else {
|
|
|
|
ompi_convertor_t convertor;
|
|
struct iovec iov;
|
|
unsigned char recv_data[2048];
|
|
size_t packed_size, max_data;
|
|
uint32_t iov_count;
|
|
int free_after;
|
|
ompi_status_public_t recv_status;
|
|
ompi_proc_t* proc = ompi_comm_peer_lookup(comm,dest);
|
|
if(proc == NULL) {
|
|
rc = MPI_ERR_RANK;
|
|
OMPI_ERRHANDLER_RETURN(rc, comm, rc, FUNC_NAME);
|
|
}
|
|
|
|
/* initialize convertor to unpack recv buffer */
|
|
OBJ_CONSTRUCT(&convertor, ompi_convertor_t);
|
|
ompi_convertor_copy_and_prepare_for_recv( proc->proc_convertor, datatype,
|
|
count, buf, 0, &convertor );
|
|
|
|
/* setup a buffer for recv */
|
|
ompi_convertor_get_packed_size( &convertor, &packed_size );
|
|
if( packed_size > sizeof(recv_data) ) {
|
|
rc = MPI_Alloc_mem(packed_size, MPI_INFO_NULL, &iov.iov_base);
|
|
if(OMPI_SUCCESS != rc) {
|
|
OMPI_ERRHANDLER_RETURN(OMPI_ERR_OUT_OF_RESOURCE, comm, MPI_ERR_BUFFER, FUNC_NAME);
|
|
}
|
|
} else {
|
|
iov.iov_base = (caddr_t)recv_data;
|
|
}
|
|
|
|
/* recv into temporary buffer */
|
|
rc = MPI_Sendrecv( buf, count, datatype, dest, sendtag, iov.iov_base, packed_size,
|
|
MPI_BYTE, source, recvtag, comm, &recv_status );
|
|
if (rc != MPI_SUCCESS) {
|
|
if(packed_size > sizeof(recv_data))
|
|
free(iov.iov_base);
|
|
OBJ_DESTRUCT(&convertor);
|
|
OMPI_ERRHANDLER_RETURN(rc, comm, rc, FUNC_NAME);
|
|
}
|
|
|
|
/* unpack into users buffer */
|
|
iov.iov_len = recv_status._count;
|
|
iov_count = 1;
|
|
max_data = recv_status._count;
|
|
ompi_convertor_unpack(&convertor, &iov, &iov_count, &max_data, &free_after);
|
|
|
|
/* return status to user */
|
|
if(status != MPI_STATUS_IGNORE) {
|
|
*status = recv_status;
|
|
}
|
|
|
|
/* release resources */
|
|
if(packed_size > sizeof(recv_data)) {
|
|
MPI_Free_mem(iov.iov_base);
|
|
}
|
|
OBJ_DESTRUCT(&convertor);
|
|
return MPI_SUCCESS;
|
|
}
|
|
}
|