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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2021 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) 2010-2012 Oak Ridge National Labs. All rights reserved.
* Copyright (c) 2013 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2021 Nanook Consulting. All rights reserved.
* Copyright (c) 2023 Jeffrey M. Squyres. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/communicator/communicator.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/mca/pml/pml.h"
#include "ompi/request/request.h"
#include "ompi/memchecker.h"
#include "ompi/runtime/ompi_spc.h"
#if OMPI_BUILD_MPI_PROFILING
#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_Sendrecv = PMPI_Sendrecv
#endif
#define MPI_Sendrecv PMPI_Sendrecv
#endif
static const char FUNC_NAME[] = "MPI_Sendrecv";
int MPI_Sendrecv(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
int dest, int sendtag, void *recvbuf, int recvcount,
MPI_Datatype recvtype, int source, int recvtag,
MPI_Comm comm, MPI_Status *status)
{
ompi_request_t* req;
int rc = MPI_SUCCESS;
int rcs = MPI_SUCCESS;
SPC_RECORD(OMPI_SPC_SENDRECV, 1);
MEMCHECKER(
memchecker_datatype(sendtype);
memchecker_datatype(recvtype);
memchecker_call(&opal_memchecker_base_isdefined, sendbuf, sendcount, sendtype);
memchecker_comm(comm);
);
if ( MPI_PARAM_CHECK ) {
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
OMPI_CHECK_DATATYPE_FOR_SEND(rc, sendtype, sendcount);
OMPI_CHECK_DATATYPE_FOR_RECV(rc, recvtype, recvcount);
OMPI_CHECK_USER_BUFFER(rc, sendbuf, sendtype, sendcount);
OMPI_CHECK_USER_BUFFER(rc, recvbuf, recvtype, recvcount);
if (ompi_comm_invalid(comm)) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(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);
}
if (source != MPI_PROC_NULL) { /* post recv */
rc = MCA_PML_CALL(irecv(recvbuf, recvcount, recvtype,
source, recvtag, comm, &req));
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
}
if (dest != MPI_PROC_NULL) { /* send */
rc = MCA_PML_CALL(send(sendbuf, sendcount, sendtype, dest,
sendtag, MCA_PML_BASE_SEND_STANDARD, comm));
if (OPAL_UNLIKELY(MPI_SUCCESS != rc)) {
rcs = rc;
#if OPAL_ENABLE_FT_MPI
/* If this is a PROC_FAILED error, we still need to proceed with
* the receive, so that we do not propagate errors to the sender in
* the case src != dst, and only dst is dead. In this case the
* recv is guaranteed to complete (either in error if the source is
* dead, or successfully if the source is live). */
if (OPAL_UNLIKELY(MPI_ERR_PROC_FAILED != rc))
/* if intentionally spills outside ifdef */
#endif
ompi_request_cancel(req);
}
}
if (source != MPI_PROC_NULL) { /* wait for recv */
rc = ompi_request_wait(&req, status);
#if OPAL_ENABLE_FT_MPI
/* Sendrecv never returns ERR_PROC_FAILED_PENDING because it is
* blocking. Lets cancel that irecv to complete it NOW and promote
* the error to ERR_PROC_FAILED */
if( OPAL_UNLIKELY(MPI_ERR_PROC_FAILED_PENDING == rc) ) {
ompi_request_cancel(req);
ompi_request_wait(&req, MPI_STATUS_IGNORE);
rc = MPI_ERR_PROC_FAILED;
}
#endif
} else {
if (MPI_STATUS_IGNORE != status) {
OMPI_COPY_STATUS(status, ompi_request_empty.req_status, false);
/*
* Per MPI-1, the MPI_ERROR field is not defined for single-completion calls
*/
MEMCHECKER(
opal_memchecker_base_mem_undefined(&status->MPI_ERROR, sizeof(int));
);
}
rc = MPI_SUCCESS;
}
if( OPAL_UNLIKELY(MPI_SUCCESS != rcs && MPI_SUCCESS == rc) ) {
rc = rcs;
}
OMPI_ERRHANDLER_RETURN(rc, comm, rc, FUNC_NAME);
}
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