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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) 2004-2022 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) 2021 Triad National Security, LLC. 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/communicator/comm_request.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_Isendrecv = PMPI_Isendrecv
#endif
#define MPI_Isendrecv PMPI_Isendrecv
#endif
static const char FUNC_NAME[] = "MPI_Isendrecv";
struct ompi_isendrecv_context_t {
opal_object_t super;
int nreqs;
int source;
ompi_request_t *subreq[2];
};
typedef struct ompi_isendrecv_context_t ompi_isendrecv_context_t;
#if OMPI_BUILD_MPI_PROFILING
OBJ_CLASS_INSTANCE(ompi_isendrecv_context_t, opal_object_t, NULL, NULL);
#else
OBJ_CLASS_DECLARATION(ompi_isendrecv_context_t);
#endif /* OMPI_BUILD_MPI_PROFILING */
static int ompi_isendrecv_complete_func (ompi_comm_request_t *request)
{
ompi_isendrecv_context_t *context =
(ompi_isendrecv_context_t *) request->context;
/*
* Copy the status from the receive side of the sendrecv request?
* But what if the send failed?
*
* Probably need to bring up in the MPI forum.
*/
if (MPI_PROC_NULL != context->source) {
OMPI_COPY_STATUS(&request->super.req_status,
context->subreq[0]->req_status, false);
} else {
OMPI_COPY_STATUS(&request->super.req_status,
ompi_request_empty.req_status, false);
}
if(NULL != context->subreq[0]) {
ompi_request_free(&context->subreq[0]);
}
if(NULL != context->subreq[1]) {
ompi_request_free(&context->subreq[1]);
}
return OMPI_SUCCESS;
}
int MPI_Isendrecv(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_Request *request)
{
ompi_isendrecv_context_t *context = NULL;
ompi_comm_request_t *crequest;
int rc = MPI_SUCCESS;
int nreqs = 0;
uint32_t flags;
SPC_RECORD(OMPI_SPC_ISENDRECV, 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;
} else if (request == NULL) {
rc = MPI_ERR_REQUEST;
}
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
}
crequest = ompi_comm_request_get ();
if (NULL == crequest) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
context = OBJ_NEW(ompi_isendrecv_context_t);
if (NULL == context) {
ompi_comm_request_return (crequest);
return OMPI_ERR_OUT_OF_RESOURCE;
}
crequest->context = &context->super;
context->subreq[0] = MPI_REQUEST_NULL;
context->subreq[1] = MPI_REQUEST_NULL;
context->source = source;
if (source != MPI_PROC_NULL) { /* post recv */
rc = MCA_PML_CALL(irecv(recvbuf, recvcount, recvtype,
source, recvtag, comm, &context->subreq[nreqs++]));
if (MPI_SUCCESS != rc) {
OBJ_RELEASE(context);
ompi_comm_request_return (crequest);
}
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
}
if (dest != MPI_PROC_NULL) { /* send */
rc = MCA_PML_CALL(isend(sendbuf, sendcount, sendtype, dest,
sendtag, MCA_PML_BASE_SEND_STANDARD, comm, &context->subreq[nreqs++]));
if (MPI_SUCCESS != rc) {
OBJ_RELEASE(context);
ompi_comm_request_return (crequest);
}
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
}
/*
* schedule the operation
*/
context->nreqs = nreqs;
assert(nreqs <= 2);
flags = OMPI_COMM_REQ_FLAG_RETAIN_SUBREQ;
rc = ompi_comm_request_schedule_append_w_flags(crequest, ompi_isendrecv_complete_func,
context->subreq, nreqs, flags);
if (MPI_SUCCESS != rc) {
OBJ_RELEASE(context);
ompi_comm_request_return (crequest);
}
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
/* kick off the request */
ompi_comm_request_start (crequest);
*request = &crequest->super;
return rc;
}
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