int MPIDI_CH3_PktHandler_EagerSyncSend( MPIDI_VC_t *vc, MPIDI_CH3_Pkt_t *pkt,
intptr_t *buflen, MPIR_Request **rreqp )
{
MPIDI_CH3_Pkt_eager_send_t * es_pkt = &pkt->eager_send;
MPIR_Request * rreq;
int found;
int complete;
char *data_buf;
intptr_t data_len;
int mpi_errno = MPI_SUCCESS;
MPL_DBG_MSG_FMT(MPIDI_CH3_DBG_OTHER,VERBOSE,(MPL_DBG_FDEST,
"received eager sync send pkt, sreq=0x%08x, rank=%d, tag=%d, context=%d",
es_pkt->sender_req_id, es_pkt->match.parts.rank,
es_pkt->match.parts.tag,
es_pkt->match.parts.context_id));
MPL_DBG_MSGPKT(vc,es_pkt->match.parts.tag,es_pkt->match.parts.context_id,
es_pkt->match.parts.rank,es_pkt->data_sz,
"ReceivedEagerSync");
rreq = MPIDI_CH3U_Recvq_FDP_or_AEU(&es_pkt->match, &found);
MPIR_ERR_CHKANDJUMP1(!rreq, mpi_errno,MPI_ERR_OTHER, "**nomemreq", "**nomemuereq %d", MPIDI_CH3U_Recvq_count_unexp());
/* If the completion counter is 0, that means that the communicator to
* which this message is being sent has been revoked and we shouldn't
* bother finishing this. */
if (!found && MPIR_cc_get(rreq->cc) == 0) {
*rreqp = NULL;
goto fn_fail;
}
set_request_info(rreq, es_pkt, MPIDI_REQUEST_EAGER_MSG);
data_len = ((*buflen - sizeof(MPIDI_CH3_Pkt_t) >= rreq->dev.recv_data_sz)
? rreq->dev.recv_data_sz : *buflen - sizeof(MPIDI_CH3_Pkt_t));
data_buf = (char *)pkt + sizeof(MPIDI_CH3_Pkt_t);
if (found)
{
MPIDI_CH3_Pkt_t upkt;
MPIDI_CH3_Pkt_eager_sync_ack_t * const esa_pkt = &upkt.eager_sync_ack;
MPIR_Request * esa_req;
if (rreq->dev.recv_data_sz == 0) {
*buflen = sizeof(MPIDI_CH3_Pkt_t);
mpi_errno = MPID_Request_complete(rreq);
if (mpi_errno != MPI_SUCCESS) {
MPIR_ERR_POP(mpi_errno);
}
*rreqp = NULL;
}
else {
mpi_errno = MPIDI_CH3U_Receive_data_found( rreq, data_buf,
&data_len, &complete );
if (mpi_errno != MPI_SUCCESS) {
MPIR_ERR_SETANDJUMP1(mpi_errno,MPI_ERR_OTHER, "**ch3|postrecv",
"**ch3|postrecv %s", "MPIDI_CH3_PKT_EAGER_SYNC_SEND");
}
*buflen = sizeof(MPIDI_CH3_Pkt_t) + data_len;
if (complete)
{
mpi_errno = MPID_Request_complete(rreq);
if (mpi_errno != MPI_SUCCESS) {
MPIR_ERR_POP(mpi_errno);
}
*rreqp = NULL;
}
else
{
*rreqp = rreq;
}
}
MPL_DBG_MSG(MPIDI_CH3_DBG_OTHER,VERBOSE,"sending eager sync ack");
MPIDI_Pkt_init(esa_pkt, MPIDI_CH3_PKT_EAGER_SYNC_ACK);
esa_pkt->sender_req_id = rreq->dev.sender_req_id;
/* Because this is a packet handler, it is already within a CH3 CS */
/* MPID_THREAD_CS_ENTER(POBJ, vc->pobj_mutex); */
mpi_errno = MPIDI_CH3_iStartMsg(vc, esa_pkt, sizeof(*esa_pkt), &esa_req);
/* MPID_THREAD_CS_EXIT(POBJ, vc->pobj_mutex); */
if (mpi_errno != MPI_SUCCESS) {
MPIR_ERR_SETANDJUMP(mpi_errno,MPI_ERR_OTHER,
"**ch3|syncack");
}
if (esa_req != NULL) {
MPIR_Request_free(esa_req);
}
}
else
{
if (rreq->dev.recv_data_sz == 0) {
*buflen = sizeof(MPIDI_CH3_Pkt_t);
mpi_errno = MPID_Request_complete(rreq);
if (mpi_errno != MPI_SUCCESS) {
MPIR_ERR_POP(mpi_errno);
}
*rreqp = NULL;
}
else {
mpi_errno = MPIDI_CH3U_Receive_data_unexpected( rreq, data_buf,
&data_len, &complete );
if (mpi_errno != MPI_SUCCESS) {
MPIR_ERR_SETANDJUMP1(mpi_errno,MPI_ERR_OTHER, "**ch3|postrecv",
"**ch3|postrecv %s", "MPIDI_CH3_PKT_EAGER_SYNC_SEND");
}
*buflen = sizeof(MPIDI_CH3_Pkt_t) + data_len;
if (complete)
{
mpi_errno = MPID_Request_complete(rreq);
if (mpi_errno != MPI_SUCCESS) {
MPIR_ERR_POP(mpi_errno);
}
*rreqp = NULL;
}
else
{
*rreqp = rreq;
}
}
MPIDI_Request_set_sync_send_flag(rreq, TRUE);
}
fn_fail:
return mpi_errno;
}
int MPIDI_CH3_PktHandler_RndvReqToSend( MPIDI_VC_t *vc, MPIDI_CH3_Pkt_t *pkt,
MPIDI_msg_sz_t *buflen, MPID_Request **rreqp )
{
MPID_Request * rreq;
int found;
MPIDI_CH3_Pkt_rndv_req_to_send_t * rts_pkt = &pkt->rndv_req_to_send;
int mpi_errno = MPI_SUCCESS;
MPIU_DBG_MSG_FMT(CH3_OTHER,VERBOSE,(MPIU_DBG_FDEST,
"received rndv RTS pkt, sreq=0x%08x, rank=%d, tag=%d, context=%d, data_sz=" MPIDI_MSG_SZ_FMT,
rts_pkt->sender_req_id, rts_pkt->match.parts.rank,
rts_pkt->match.parts.tag,
rts_pkt->match.parts.context_id, rts_pkt->data_sz));
MPIU_DBG_MSGPKT(vc,rts_pkt->match.parts.tag,rts_pkt->match.parts.context_id,
rts_pkt->match.parts.rank,rts_pkt->data_sz,
"ReceivedRndv");
MPIU_THREAD_CS_ENTER(MSGQUEUE,);
rreq = MPIDI_CH3U_Recvq_FDP_or_AEU(&rts_pkt->match, &found);
MPIU_ERR_CHKANDJUMP1(!rreq, mpi_errno,MPI_ERR_OTHER, "**nomemreq", "**nomemuereq %d", MPIDI_CH3U_Recvq_count_unexp());
set_request_info(rreq, rts_pkt, MPIDI_REQUEST_RNDV_MSG);
MPIU_THREAD_CS_EXIT(MSGQUEUE,);
*buflen = sizeof(MPIDI_CH3_Pkt_t);
if (found)
{
MPID_Request * cts_req;
MPIDI_CH3_Pkt_t upkt;
MPIDI_CH3_Pkt_rndv_clr_to_send_t * cts_pkt = &upkt.rndv_clr_to_send;
MPIU_DBG_MSG(CH3_OTHER,VERBOSE,"posted request found");
/* FIXME: What if the receive user buffer is not big enough to
hold the data about to be cleared for sending? */
MPIU_DBG_MSG(CH3_OTHER,VERBOSE,"sending rndv CTS packet");
MPIDI_Pkt_init(cts_pkt, MPIDI_CH3_PKT_RNDV_CLR_TO_SEND);
cts_pkt->sender_req_id = rts_pkt->sender_req_id;
cts_pkt->receiver_req_id = rreq->handle;
MPIU_THREAD_CS_ENTER(CH3COMM,vc);
mpi_errno = MPIU_CALL(MPIDI_CH3,iStartMsg(vc, cts_pkt,
sizeof(*cts_pkt), &cts_req));
MPIU_THREAD_CS_EXIT(CH3COMM,vc);
if (mpi_errno != MPI_SUCCESS) {
MPIU_ERR_SETANDJUMP(mpi_errno,MPI_ERR_OTHER,
"**ch3|ctspkt");
}
if (cts_req != NULL) {
MPID_Request_release(cts_req);
}
}
else
{
MPIU_DBG_MSG(CH3_OTHER,VERBOSE,"unexpected request allocated");
/*
* A MPID_Probe() may be waiting for the request we just
* inserted, so we need to tell the progress engine to exit.
*
* FIXME: This will cause MPID_Progress_wait() to return to the
* MPI layer each time an unexpected RTS packet is
* received. MPID_Probe() should atomically increment a
* counter and MPIDI_CH3_Progress_signal_completion()
* should only be called if that counter is greater than zero.
*/
MPIDI_CH3_Progress_signal_completion();
}
*rreqp = NULL;
fn_fail:
return mpi_errno;
}
int MPIDI_CH3_PktHandler_RndvReqToSend( MPIDI_VC_t *vc, MPIDI_CH3_Pkt_t *pkt,
intptr_t *buflen, MPIR_Request **rreqp )
{
MPIR_Request * rreq;
int found;
MPIDI_CH3_Pkt_rndv_req_to_send_t * rts_pkt = &pkt->rndv_req_to_send;
int mpi_errno = MPI_SUCCESS;
MPL_DBG_MSG_FMT(MPIDI_CH3_DBG_OTHER,VERBOSE,(MPL_DBG_FDEST,
"received rndv RTS pkt, sreq=0x%08x, rank=%d, tag=%d, context=%d, data_sz=%" PRIdPTR,
rts_pkt->sender_req_id, rts_pkt->match.parts.rank,
rts_pkt->match.parts.tag,
rts_pkt->match.parts.context_id, rts_pkt->data_sz));
MPL_DBG_MSGPKT(vc,rts_pkt->match.parts.tag,rts_pkt->match.parts.context_id,
rts_pkt->match.parts.rank,rts_pkt->data_sz,
"ReceivedRndv");
MPID_THREAD_CS_ENTER(POBJ, MPIR_THREAD_POBJ_MSGQ_MUTEX);
rreq = MPIDI_CH3U_Recvq_FDP_or_AEU(&rts_pkt->match, &found);
MPIR_ERR_CHKANDJUMP1(!rreq, mpi_errno,MPI_ERR_OTHER, "**nomemreq", "**nomemuereq %d", MPIDI_CH3U_Recvq_count_unexp());
/* If the completion counter is 0, that means that the communicator to
* which this message is being sent has been revoked and we shouldn't
* bother finishing this. */
if (!found && MPIR_cc_get(rreq->cc) == 0) {
*rreqp = NULL;
goto fn_fail;
}
set_request_info(rreq, rts_pkt, MPIDI_REQUEST_RNDV_MSG);
MPID_THREAD_CS_EXIT(POBJ, MPIR_THREAD_POBJ_MSGQ_MUTEX);
*buflen = sizeof(MPIDI_CH3_Pkt_t);
if (found)
{
MPIR_Request * cts_req;
MPIDI_CH3_Pkt_t upkt;
MPIDI_CH3_Pkt_rndv_clr_to_send_t * cts_pkt = &upkt.rndv_clr_to_send;
MPL_DBG_MSG(MPIDI_CH3_DBG_OTHER,VERBOSE,"posted request found");
/* FIXME: What if the receive user buffer is not big enough to
hold the data about to be cleared for sending? */
MPL_DBG_MSG(MPIDI_CH3_DBG_OTHER,VERBOSE,"sending rndv CTS packet");
MPIDI_Pkt_init(cts_pkt, MPIDI_CH3_PKT_RNDV_CLR_TO_SEND);
cts_pkt->sender_req_id = rts_pkt->sender_req_id;
cts_pkt->receiver_req_id = rreq->handle;
MPID_THREAD_CS_ENTER(POBJ, vc->pobj_mutex);
mpi_errno = MPIDI_CH3_iStartMsg(vc, cts_pkt, sizeof(*cts_pkt), &cts_req);
MPID_THREAD_CS_EXIT(POBJ, vc->pobj_mutex);
if (mpi_errno != MPI_SUCCESS) {
MPIR_ERR_SETANDJUMP(mpi_errno,MPI_ERR_OTHER,
"**ch3|ctspkt");
}
if (cts_req != NULL) {
MPIR_Request_free(cts_req);
}
}
else
{
MPL_DBG_MSG(MPIDI_CH3_DBG_OTHER,VERBOSE,"unexpected request allocated");
/*
* A MPID_Probe() may be waiting for the request we just
* inserted, so we need to tell the progress engine to exit.
*
* FIXME: This will cause MPID_Progress_wait() to return to the
* MPI layer each time an unexpected RTS packet is
* received. MPID_Probe() should atomically increment a
* counter and MPIDI_CH3_Progress_signal_completion()
* should only be called if that counter is greater than zero.
*/
MPIDI_CH3_Progress_signal_completion();
}
*rreqp = NULL;
fn_fail:
return mpi_errno;
}
