ch3u_handle_recv_req.c 43.2 KB
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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
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/*
 *  (C) 2001 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */

#include "mpidimpl.h"
#include "mpidrma.h"

static int create_derived_datatype(MPID_Request * rreq, MPID_Datatype ** dtp);
static int do_accumulate_op(MPID_Request * rreq);
static int do_simple_accumulate(MPIDI_PT_single_op *single_op);
static int do_simple_get(MPID_Win *win_ptr, MPIDI_Win_lock_queue *lock_queue);

#undef FUNCNAME
#define FUNCNAME MPIDI_CH3U_Handle_recv_req
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
int MPIDI_CH3U_Handle_recv_req(MPIDI_VC_t * vc, MPID_Request * rreq, 
			       int * complete)
{
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    static int in_routine ATTRIBUTE((unused)) = FALSE;
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    int mpi_errno = MPI_SUCCESS;
    int (*reqFn)(MPIDI_VC_t *, MPID_Request *, int *);
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3U_HANDLE_RECV_REQ);

    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3U_HANDLE_RECV_REQ);

    MPIU_Assert(in_routine == FALSE);
    in_routine = TRUE;

    reqFn = rreq->dev.OnDataAvail;
    if (!reqFn) {
	MPIU_Assert(MPIDI_Request_get_type(rreq) == MPIDI_REQUEST_TYPE_RECV);
	MPIDI_CH3U_Request_complete(rreq);
	*complete = TRUE;
    }
    else {
        mpi_errno = reqFn( vc, rreq, complete );
    }

    in_routine = FALSE;
    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3U_HANDLE_RECV_REQ);
    return mpi_errno;
}

/* ----------------------------------------------------------------------- */
/* Here are the functions that implement the actions that are taken when 
 * data is available for a receive request (or other completion operations)
 * These include "receive" requests that are part of the RMA implementation.
 *
 * The convention for the names of routines that are called when data is
 * available is
 *    MPIDI_CH3_ReqHandler_<type>( MPIDI_VC_t *, MPID_Request *, int * )
 * as in 
 *    MPIDI_CH3_ReqHandler_...
 *
 * ToDo: 
 *    We need a way for each of these functions to describe what they are,
 *    so that given a pointer to one of these functions, we can retrieve
 *    a description of the routine.  We may want to use a static string 
 *    and require the user to maintain thread-safety, at least while
 *    accessing the string.
 */
/* ----------------------------------------------------------------------- */
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int MPIDI_CH3_ReqHandler_RecvComplete( MPIDI_VC_t *vc ATTRIBUTE((unused)), 
				       MPID_Request *rreq, 
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				       int *complete )
{
    /* mark data transfer as complete and decrement CC */
    MPIDI_CH3U_Request_complete(rreq);
    *complete = TRUE;
    return MPI_SUCCESS;
}

#undef FUNCNAME
#define FUNCNAME MPIDI_CH3_ReqHandler_PutAccumRespComplete
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
int MPIDI_CH3_ReqHandler_PutAccumRespComplete( MPIDI_VC_t *vc, 
					       MPID_Request *rreq, 
					       int *complete )
{
    int mpi_errno = MPI_SUCCESS;
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    int get_acc_flag = 0;
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    MPID_Win *win_ptr;
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    MPIU_CHKPMEM_DECL(1);
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    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3_REQHANDLER_PUTACCUMRESPCOMPLETE);
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    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3_REQHANDLER_PUTACCUMRESPCOMPLETE);

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    MPID_Win_get_ptr(rreq->dev.target_win_handle, win_ptr);

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    /* Perform get in get-accumulate */
    if (rreq->dev.resp_request_handle != MPI_REQUEST_NULL) {
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        MPI_Aint type_size;
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        MPIDI_CH3_Pkt_t upkt;
        MPIDI_CH3_Pkt_get_accum_resp_t *get_accum_resp_pkt = &upkt.get_accum_resp;
        MPID_Request *resp_req;
        MPID_IOV iov[MPID_IOV_LIMIT];

        MPIDI_Pkt_init(get_accum_resp_pkt, MPIDI_CH3_PKT_GET_ACCUM_RESP);
        get_accum_resp_pkt->request_handle = rreq->dev.resp_request_handle;

        MPID_Datatype_get_size_macro(rreq->dev.datatype, type_size);

        /* Copy data into a temporary buffer */
        resp_req = MPID_Request_create();
        MPIU_ERR_CHKANDJUMP(resp_req == NULL, mpi_errno, MPI_ERR_OTHER, "**nomemreq");
        MPIU_Object_set_ref(resp_req, 1);

        MPIU_CHKPMEM_MALLOC(resp_req->dev.user_buf, void *, rreq->dev.user_count * type_size,
                            mpi_errno, "GACC resp. buffer");

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        if (MPIR_DATATYPE_IS_PREDEFINED(rreq->dev.datatype)) {
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            MPIU_Memcpy(resp_req->dev.user_buf, rreq->dev.real_user_buf, 
                        rreq->dev.user_count * type_size);
        } else {
            MPID_Segment *seg = MPID_Segment_alloc();
            MPI_Aint last = type_size * rreq->dev.user_count;

            MPIU_ERR_CHKANDJUMP1(seg == NULL, mpi_errno, MPI_ERR_OTHER, "**nomem", "**nomem %s", "MPID_Segment");
            MPID_Segment_init(rreq->dev.real_user_buf, rreq->dev.user_count, rreq->dev.datatype, seg, 0);
            MPID_Segment_pack(seg, 0, &last, resp_req->dev.user_buf);
            MPID_Segment_free(seg);
        }

        resp_req->dev.OnFinal = MPIDI_CH3_ReqHandler_GetAccumRespComplete;
        resp_req->dev.OnDataAvail = MPIDI_CH3_ReqHandler_GetAccumRespComplete;
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        resp_req->dev.target_win_handle = rreq->dev.target_win_handle;
        resp_req->dev.flags = rreq->dev.flags;
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        /* here we increment the Active Target counter to guarantee the GET-like
           operation are completed when counter reaches zero. */
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        win_ptr->at_completion_counter++;
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        iov[0].MPID_IOV_BUF = (MPID_IOV_BUF_CAST) get_accum_resp_pkt;
        iov[0].MPID_IOV_LEN = sizeof(*get_accum_resp_pkt);

        iov[1].MPID_IOV_BUF = (MPID_IOV_BUF_CAST)resp_req->dev.user_buf;
        iov[1].MPID_IOV_LEN = type_size*rreq->dev.user_count;

        MPIU_THREAD_CS_ENTER(CH3COMM,vc);
        mpi_errno = MPIDI_CH3_iSendv(vc, resp_req, iov, 2);
        MPIU_THREAD_CS_EXIT(CH3COMM,vc);

        MPIU_ERR_CHKANDJUMP(mpi_errno != MPI_SUCCESS, mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");

        /* Mark get portion as handled */
        rreq->dev.resp_request_handle = MPI_REQUEST_NULL;
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        get_acc_flag = 1;
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    }

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    if (MPIDI_Request_get_type(rreq) == MPIDI_REQUEST_TYPE_ACCUM_RESP) {
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	if (win_ptr->shm_allocated == TRUE)
	    MPIDI_CH3I_SHM_MUTEX_LOCK(win_ptr);
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	/* accumulate data from tmp_buf into user_buf */
	mpi_errno = do_accumulate_op(rreq);
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	if (win_ptr->shm_allocated == TRUE)
	    MPIDI_CH3I_SHM_MUTEX_UNLOCK(win_ptr);

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	if (mpi_errno) {
	    MPIU_ERR_POP(mpi_errno);
	}
    }
    
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    if (!get_acc_flag) {
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    mpi_errno = MPIDI_CH3_Finish_rma_op_target(vc, win_ptr, TRUE, rreq->dev.flags,
                                               rreq->dev.source_win_handle);
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    if (mpi_errno) { MPIU_ERR_POP(mpi_errno); }
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    }
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    /* mark data transfer as complete and decrement CC */
    MPIDI_CH3U_Request_complete(rreq);
    *complete = TRUE;
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 fn_exit:
    MPIU_CHKPMEM_COMMIT();
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    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3_REQHANDLER_PUTACCUMRESPCOMPLETE);
    return MPI_SUCCESS;
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    /* --BEGIN ERROR HANDLING-- */
 fn_fail:
    MPIU_CHKPMEM_REAP();
    goto fn_exit;
    /* --END ERROR HANDLING-- */
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}

#undef FUNCNAME
#define FUNCNAME MPIDI_CH3_ReqHandler_PutRespDerivedDTComplete
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
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int MPIDI_CH3_ReqHandler_PutRespDerivedDTComplete( MPIDI_VC_t *vc ATTRIBUTE((unused)), 
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						   MPID_Request *rreq, 
						   int *complete )
{
    int mpi_errno = MPI_SUCCESS;
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    MPID_Datatype *new_dtp = NULL;
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    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3_REQHANDLER_PUTRESPDERIVEDDTCOMPLETE);
    
    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3_REQHANDLER_PUTRESPDERIVEDDTCOMPLETE);
                
    /* create derived datatype */
    create_derived_datatype(rreq, &new_dtp);
    
    /* update request to get the data */
    MPIDI_Request_set_type(rreq, MPIDI_REQUEST_TYPE_PUT_RESP);
    rreq->dev.datatype = new_dtp->handle;
    rreq->dev.recv_data_sz = new_dtp->size * rreq->dev.user_count; 
    
    rreq->dev.datatype_ptr = new_dtp;
    /* this will cause the datatype to be freed when the
       request is freed. free dtype_info here. */
    MPIU_Free(rreq->dev.dtype_info);
    
    rreq->dev.segment_ptr = MPID_Segment_alloc( );
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    MPIU_ERR_CHKANDJUMP1((rreq->dev.segment_ptr == NULL), mpi_errno, MPI_ERR_OTHER, "**nomem", "**nomem %s", "MPID_Segment_alloc");

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    MPID_Segment_init(rreq->dev.user_buf,
		      rreq->dev.user_count,
		      rreq->dev.datatype,
		      rreq->dev.segment_ptr, 0);
    rreq->dev.segment_first = 0;
    rreq->dev.segment_size = rreq->dev.recv_data_sz;
    
    mpi_errno = MPIDI_CH3U_Request_load_recv_iov(rreq);
    if (mpi_errno != MPI_SUCCESS) {
	MPIU_ERR_SETANDJUMP(mpi_errno,MPI_ERR_OTHER,
			    "**ch3|loadrecviov");
    }
    if (!rreq->dev.OnDataAvail) 
	rreq->dev.OnDataAvail = MPIDI_CH3_ReqHandler_PutAccumRespComplete;
    
    *complete = FALSE;
 fn_fail:
    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3_REQHANDLER_PUTRESPDERIVEDDTCOMPLETE);
    return mpi_errno;
}

#undef FUNCNAME
#define FUNCNAME MPIDI_CH3_ReqHandler_AccumRespDerivedDTComplete
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
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int MPIDI_CH3_ReqHandler_AccumRespDerivedDTComplete( MPIDI_VC_t *vc ATTRIBUTE((unused)), 
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						     MPID_Request *rreq, 
						     int *complete )
{
    int mpi_errno = MPI_SUCCESS;
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    MPID_Datatype *new_dtp = NULL;
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    MPI_Aint true_lb, true_extent, extent;
    void *tmp_buf;
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3_REQHANDLER_ACCUMRESPDERIVEDDTCOMPLETE);
    
    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3_REQHANDLER_ACCUMRESPDERIVEDDTCOMPLETE);
    
    /* create derived datatype */
    create_derived_datatype(rreq, &new_dtp);
    
    /* update new request to get the data */
    MPIDI_Request_set_type(rreq, MPIDI_REQUEST_TYPE_ACCUM_RESP);
    
    /* first need to allocate tmp_buf to recv the data into */
    
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    MPIR_Type_get_true_extent_impl(new_dtp->handle, &true_lb, &true_extent);
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    MPID_Datatype_get_extent_macro(new_dtp->handle, extent); 
    
    tmp_buf = MPIU_Malloc(rreq->dev.user_count * 
			  (MPIR_MAX(extent,true_extent)));  
    if (!tmp_buf) {
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	MPIU_ERR_SETANDJUMP1(mpi_errno,MPI_ERR_OTHER,"**nomem","**nomem %d",
		    rreq->dev.user_count * MPIR_MAX(extent,true_extent));
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    }
    
    /* adjust for potential negative lower bound in datatype */
    tmp_buf = (void *)((char*)tmp_buf - true_lb);
    
    rreq->dev.user_buf = tmp_buf;
    rreq->dev.datatype = new_dtp->handle;
    rreq->dev.recv_data_sz = new_dtp->size *
	rreq->dev.user_count; 
    rreq->dev.datatype_ptr = new_dtp;
    /* this will cause the datatype to be freed when the
       request is freed. free dtype_info here. */
    MPIU_Free(rreq->dev.dtype_info);
    
    rreq->dev.segment_ptr = MPID_Segment_alloc( );
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    MPIU_ERR_CHKANDJUMP1((rreq->dev.segment_ptr == NULL), mpi_errno, MPI_ERR_OTHER, "**nomem", "**nomem %s", "MPID_Segment_alloc");

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    MPID_Segment_init(rreq->dev.user_buf,
		      rreq->dev.user_count,
		      rreq->dev.datatype,
		      rreq->dev.segment_ptr, 0);
    rreq->dev.segment_first = 0;
    rreq->dev.segment_size = rreq->dev.recv_data_sz;
    
    mpi_errno = MPIDI_CH3U_Request_load_recv_iov(rreq);
    if (mpi_errno != MPI_SUCCESS) {
	MPIU_ERR_SETANDJUMP(mpi_errno,MPI_ERR_OTHER,
			    "**ch3|loadrecviov");
    }
    if (!rreq->dev.OnDataAvail)
	rreq->dev.OnDataAvail = MPIDI_CH3_ReqHandler_PutAccumRespComplete;
    
    *complete = FALSE;
 fn_fail:
    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3_REQHANDLER_ACCUMRESPDERIVEDDTCOMPLETE);
    return mpi_errno;
}

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#undef FUNCNAME
#define FUNCNAME MPIDI_CH3_ReqHandler_GetAccumRespComplete
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
int MPIDI_CH3_ReqHandler_GetAccumRespComplete( MPIDI_VC_t *vc, 
                                               MPID_Request *rreq, 
                                               int *complete )
{
    int mpi_errno = MPI_SUCCESS;
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    MPID_Win *win_ptr;
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    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3_REQHANDLER_GETACCUMRESPCOMPLETE);
    
    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3_REQHANDLER_GETACCUMRESPCOMPLETE);
    MPIU_Free(rreq->dev.user_buf);

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    MPID_Win_get_ptr(rreq->dev.target_win_handle, win_ptr);

    mpi_errno = MPIDI_CH3_Finish_rma_op_target(vc, win_ptr, TRUE, rreq->dev.flags,
                                               MPI_WIN_NULL);
    if (mpi_errno) { MPIU_ERR_POP(mpi_errno); }

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    /* here we decrement the Active Target counter to guarantee the GET-like
       operation are completed when counter reaches zero. */
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    win_ptr->at_completion_counter--;
    MPIU_Assert(win_ptr->at_completion_counter >= 0);
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    MPIDI_CH3U_Request_complete(rreq);
    *complete = TRUE;
 fn_exit:
    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3_REQHANDLER_GETACCUMRESPCOMPLETE);
    return mpi_errno;

 fn_fail:
    goto fn_exit;
}


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#undef FUNCNAME
#define FUNCNAME MPIDI_CH3_ReqHandler_GetRespDerivedDTComplete
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
int MPIDI_CH3_ReqHandler_GetRespDerivedDTComplete( MPIDI_VC_t *vc, 
						   MPID_Request *rreq, 
						   int *complete )
{
    int mpi_errno = MPI_SUCCESS;
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    MPID_Datatype *new_dtp = NULL;
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    MPIDI_CH3_Pkt_t upkt;
    MPIDI_CH3_Pkt_get_resp_t * get_resp_pkt = &upkt.get_resp;
    MPID_Request * sreq;
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3_REQHANDLER_GETRESPDERIVEDDTCOMPLETE);
    
    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3_REQHANDLER_GETRESPDERIVEDDTCOMPLETE);
                
    /* create derived datatype */
    create_derived_datatype(rreq, &new_dtp);
    MPIU_Free(rreq->dev.dtype_info);
    
    /* create request for sending data */
    sreq = MPID_Request_create();
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    MPIU_ERR_CHKANDJUMP(sreq == NULL, mpi_errno,MPI_ERR_OTHER,"**nomemreq");
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    sreq->kind = MPID_REQUEST_SEND;
    MPIDI_Request_set_type(sreq, MPIDI_REQUEST_TYPE_GET_RESP);
    sreq->dev.OnDataAvail = MPIDI_CH3_ReqHandler_GetSendRespComplete;
    sreq->dev.OnFinal     = MPIDI_CH3_ReqHandler_GetSendRespComplete;
    sreq->dev.user_buf = rreq->dev.user_buf;
    sreq->dev.user_count = rreq->dev.user_count;
    sreq->dev.datatype = new_dtp->handle;
    sreq->dev.datatype_ptr = new_dtp;
    sreq->dev.target_win_handle = rreq->dev.target_win_handle;
    sreq->dev.source_win_handle = rreq->dev.source_win_handle;
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    sreq->dev.flags = rreq->dev.flags;
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    MPIDI_Pkt_init(get_resp_pkt, MPIDI_CH3_PKT_GET_RESP);
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    get_resp_pkt->request_handle = rreq->dev.request_handle;    
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    sreq->dev.segment_ptr = MPID_Segment_alloc( );
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    MPIU_ERR_CHKANDJUMP1((sreq->dev.segment_ptr == NULL), mpi_errno, MPI_ERR_OTHER, "**nomem", "**nomem %s", "MPID_Segment_alloc");

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    MPID_Segment_init(sreq->dev.user_buf,
		      sreq->dev.user_count,
		      sreq->dev.datatype,
		      sreq->dev.segment_ptr, 0);
    sreq->dev.segment_first = 0;
    sreq->dev.segment_size = new_dtp->size * sreq->dev.user_count;
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    /* Because this is in a packet handler, it is already within a critical section */	
    /* MPIU_THREAD_CS_ENTER(CH3COMM,vc); */
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    mpi_errno = vc->sendNoncontig_fn(vc, sreq, get_resp_pkt, sizeof(*get_resp_pkt));
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    /* MPIU_THREAD_CS_EXIT(CH3COMM,vc); */
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    /* --BEGIN ERROR HANDLING-- */
    if (mpi_errno != MPI_SUCCESS)
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    {
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        MPID_Request_release(sreq);
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        sreq = NULL;
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        MPIU_ERR_SETANDJUMP(mpi_errno,MPI_ERR_OTHER,"**ch3|rmamsg");
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    }
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    /* --END ERROR HANDLING-- */
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    /* mark receive data transfer as complete and decrement CC in receive 
       request */
    MPIDI_CH3U_Request_complete(rreq);
    *complete = TRUE;
    
 fn_fail:
    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3_REQHANDLER_GETRESPDERIVEDDTCOMPLETE);
    return mpi_errno;
}

#undef FUNCNAME
#define FUNCNAME MPIDI_CH3_ReqHandler_SinglePutAccumComplete
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
int MPIDI_CH3_ReqHandler_SinglePutAccumComplete( MPIDI_VC_t *vc, 
						 MPID_Request *rreq, 
						 int *complete )
{
    int mpi_errno = MPI_SUCCESS;
    MPID_Win *win_ptr;
    MPIDI_Win_lock_queue *lock_queue_entry, *curr_ptr, **curr_ptr_ptr;
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3_REQHANDLER_SINGLEPUTACCUMCOMPLETE);
    
    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3_REQHANDLER_SINGLEPUTACCUMCOMPLETE);

    /* received all the data for single lock-put(accum)-unlock 
       optimization where the lock was not acquired in 
       ch3u_handle_recv_pkt. Try to acquire the lock and do the 
       operation. */
    
    MPID_Win_get_ptr(rreq->dev.target_win_handle, win_ptr);
    
    lock_queue_entry = rreq->dev.lock_queue_entry;
    
    if (MPIDI_CH3I_Try_acquire_win_lock(win_ptr, 
					lock_queue_entry->lock_type) == 1)
    {
	
	if (MPIDI_Request_get_type(rreq) == MPIDI_REQUEST_TYPE_PT_SINGLE_PUT) {
	    /* copy the data over */
	    mpi_errno = MPIR_Localcopy(rreq->dev.user_buf,
				       rreq->dev.user_count,
				       rreq->dev.datatype,
				       lock_queue_entry->pt_single_op->addr,
				       lock_queue_entry->pt_single_op->count,
				       lock_queue_entry->pt_single_op->datatype);
	}
	else {
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	    if (win_ptr->shm_allocated == TRUE)
		MPIDI_CH3I_SHM_MUTEX_LOCK(win_ptr);
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	    mpi_errno = do_simple_accumulate(lock_queue_entry->pt_single_op);
463
464
	    if (win_ptr->shm_allocated == TRUE)
		MPIDI_CH3I_SHM_MUTEX_UNLOCK(win_ptr);
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
	}
	
	if (mpi_errno) {
	    MPIU_ERR_POP(mpi_errno);
	}
	
	/* free lock_queue_entry including data buffer and remove 
	   it from the queue. */
	curr_ptr = (MPIDI_Win_lock_queue *) win_ptr->lock_queue;
	curr_ptr_ptr = (MPIDI_Win_lock_queue **) &(win_ptr->lock_queue);
	while (curr_ptr != lock_queue_entry) {
	    curr_ptr_ptr = &(curr_ptr->next);
	    curr_ptr = curr_ptr->next;
	}                    
	*curr_ptr_ptr = curr_ptr->next;
	
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        mpi_errno = MPIDI_CH3_Finish_rma_op_target(vc, win_ptr, TRUE,
                                                   lock_queue_entry->pt_single_op->flags,
                                                   lock_queue_entry->source_win_handle);

485
486
487
488
	MPIU_Free(lock_queue_entry->pt_single_op->data);
	MPIU_Free(lock_queue_entry->pt_single_op);
	MPIU_Free(lock_queue_entry);
	
489
        if (mpi_errno) { MPIU_ERR_POP(mpi_errno); }
490
491
492
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494
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496
497
498
499
500
501
502
503
    }
    else {
	/* could not acquire lock. mark data recd as 1 */
	lock_queue_entry->pt_single_op->data_recd = 1;
    }
    
    /* mark data transfer as complete and decrement CC */
    MPIDI_CH3U_Request_complete(rreq);
    *complete = TRUE;
 fn_fail:
    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3_REQHANDLER_SINGLEPUTACCUMCOMPLETE);
    return mpi_errno;
}

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517

#undef FUNCNAME
#define FUNCNAME MPIDI_CH3_ReqHandler_FOPComplete
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
int MPIDI_CH3_ReqHandler_FOPComplete( MPIDI_VC_t *vc, 
                                      MPID_Request *rreq, int *complete )
{
    int mpi_errno = MPI_SUCCESS;
    MPIDI_CH3_Pkt_t upkt;
    MPIDI_CH3_Pkt_fop_resp_t *fop_resp_pkt = &upkt.fop_resp;
    MPID_Request *resp_req;
    MPID_Win *win_ptr;
    MPI_User_function *uop;
518
519
    MPI_Aint len;
    int one;
520
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522
523
524
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526
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528
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    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3_REQHANDLER_FOPCOMPLETE);

    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3_REQHANDLER_FOPCOMPLETE);
    MPIU_DBG_MSG(CH3_OTHER,VERBOSE,"performing FOP operation");

    MPID_Datatype_get_size_macro(rreq->dev.datatype, len);

    MPIDI_Pkt_init(fop_resp_pkt, MPIDI_CH3_PKT_FOP_RESP);
    fop_resp_pkt->request_handle = rreq->dev.request_handle;

530
531
    MPID_Win_get_ptr(rreq->dev.target_win_handle, win_ptr);

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541
    /* Copy original data into the send buffer.  If data will fit in the
       header, use that.  Otherwise allocate a temporary buffer.  */
    if (len <= sizeof(fop_resp_pkt->data)) {
        MPIU_Memcpy( fop_resp_pkt->data, rreq->dev.real_user_buf, len );
    }
    else {
        resp_req = MPID_Request_create();
        MPIU_ERR_CHKANDJUMP(resp_req == NULL, mpi_errno, MPI_ERR_OTHER, "**nomemreq");
        MPIU_Object_set_ref(resp_req, 1);

542
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544
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        resp_req->dev.target_win_handle = rreq->dev.target_win_handle;
        resp_req->dev.flags = rreq->dev.flags;
        resp_req->dev.OnDataAvail = MPIDI_CH3_ReqHandler_GetAccumRespComplete;

546
547
        /* here we increment the Active Target counter to guarantee the GET-like
           operation are completed when counter reaches zero. */
548
        win_ptr->at_completion_counter++;
549

550
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555
        MPIDI_CH3U_SRBuf_alloc(resp_req, len);
        MPIU_ERR_CHKANDJUMP(resp_req->dev.tmpbuf_sz < len, mpi_errno, MPI_ERR_OTHER, "**nomemreq");
        MPIU_Memcpy( resp_req->dev.tmpbuf, rreq->dev.real_user_buf, len );
    }

    /* Apply the op */
556
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558
    if (rreq->dev.op != MPI_NO_OP) {
        uop = MPIR_OP_HDL_TO_FN(rreq->dev.op);
        one = 1;
559

560
561
        if (win_ptr->shm_allocated == TRUE)
            MPIDI_CH3I_SHM_MUTEX_LOCK(win_ptr);
562
        (*uop)(rreq->dev.user_buf, rreq->dev.real_user_buf, &one, &rreq->dev.datatype);
563
564
        if (win_ptr->shm_allocated == TRUE)
            MPIDI_CH3I_SHM_MUTEX_UNLOCK(win_ptr);
565
    }
566
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569
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574
575

    /* Send back the original data.  We do this here to ensure that the
       operation is remote complete before responding to the origin. */
    if (len <= sizeof(fop_resp_pkt->data)) {
        MPIU_THREAD_CS_ENTER(CH3COMM,vc);
        mpi_errno = MPIDI_CH3_iStartMsg(vc, fop_resp_pkt, sizeof(*fop_resp_pkt), &resp_req);
        MPIU_THREAD_CS_EXIT(CH3COMM,vc);
        MPIU_ERR_CHKANDJUMP(mpi_errno != MPI_SUCCESS, mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");

        if (resp_req != NULL) {
576
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581
            if (!MPID_Request_is_complete(resp_req)) {
                /* sending process is not completed, set proper OnDataAvail
                   (it is initialized to NULL by lower layer) */
                resp_req->dev.target_win_handle = rreq->dev.target_win_handle;
                resp_req->dev.flags = rreq->dev.flags;
                resp_req->dev.OnDataAvail = MPIDI_CH3_ReqHandler_GetAccumRespComplete;
582
583
584

                /* here we increment the Active Target counter to guarantee the GET-like
                   operation are completed when counter reaches zero. */
585
                win_ptr->at_completion_counter++;
586

587
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589
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591
592
                MPID_Request_release(resp_req);
                goto finish_up;
            }
            else {
                MPID_Request_release(resp_req);
            }
593
        }
594
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598
599

        /* There are additional steps to take if this is a passive
           target RMA or the last operation from the source */
        mpi_errno = MPIDI_CH3_Finish_rma_op_target(vc, win_ptr, TRUE, rreq->dev.flags,
                                                   rreq->dev.source_win_handle);
        if (mpi_errno) { MPIU_ERR_POP(mpi_errno); }
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614
    }
    else {
        MPID_IOV iov[MPID_IOV_LIMIT];

        iov[0].MPID_IOV_BUF = (MPID_IOV_BUF_CAST) fop_resp_pkt;
        iov[0].MPID_IOV_LEN = sizeof(*fop_resp_pkt);
        iov[1].MPID_IOV_BUF = (MPID_IOV_BUF_CAST)resp_req->dev.tmpbuf;
        iov[1].MPID_IOV_LEN = len;

        MPIU_THREAD_CS_ENTER(CH3COMM,vc);
        mpi_errno = MPIDI_CH3_iSendv(vc, resp_req, iov, 2);
        MPIU_THREAD_CS_EXIT(CH3COMM,vc);
        MPIU_ERR_CHKANDJUMP(mpi_errno != MPI_SUCCESS, mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");
    }

615
 finish_up:
616
    /* Free temporary buffer allocated in PktHandler_FOP */
617
    if (len > sizeof(int) * MPIDI_RMA_FOP_IMMED_INTS && rreq->dev.op != MPI_NO_OP) {
618
619
620
621
622
623
624
625
626
627
628
629
        MPIU_Free(rreq->dev.user_buf);
    }

    *complete = 1;

 fn_exit:
    MPID_Request_release(rreq);
    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3_REQHANDLER_FOPCOMPLETE);
    return mpi_errno;
    /* --BEGIN ERROR HANDLING-- */
 fn_fail:
    if (resp_req != NULL) {
630
        MPID_Request_release(resp_req);
631
632
633
634
635
636
    }
    goto fn_exit;
    /* --END ERROR HANDLING-- */
}


637
638
639
640
#undef FUNCNAME
#define FUNCNAME MPIDI_CH3_ReqHandler_UnpackUEBufComplete
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
641
int MPIDI_CH3_ReqHandler_UnpackUEBufComplete( MPIDI_VC_t *vc ATTRIBUTE((unused)), 
642
643
644
645
646
647
648
649
					      MPID_Request *rreq, 
					      int *complete )
{
    int recv_pending;
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3_REQHANDLER_UNPACKUEBUFCOMPLETE);
    
    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3_REQHANDLER_UNPACKUEBUFCOMPLETE);
    
650
651
    MPIDI_Request_decr_pending(rreq);
    MPIDI_Request_check_pending(rreq, &recv_pending);
652
653
654
655
656
657
658
659
660
661
662
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664
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666
667
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669
670
671
672
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697
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699
700
701
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703
704
705
706
707
708
    if (!recv_pending)
    { 
	if (rreq->dev.recv_data_sz > 0)
	{
	    MPIDI_CH3U_Request_unpack_uebuf(rreq);
	    MPIU_Free(rreq->dev.tmpbuf);
	}
    }
    else
    {
	/* The receive has not been posted yet.  MPID_{Recv/Irecv}() 
	   is responsible for unpacking the buffer. */
    }
    
    /* mark data transfer as complete and decrement CC */
    MPIDI_CH3U_Request_complete(rreq);
    *complete = TRUE;
    
    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3_REQHANDLER_UNPACKUEBUFCOMPLETE);
    return MPI_SUCCESS;
}

#undef FUNCNAME
#define FUNCNAME MPIDI_CH3_ReqHandler_UnpackSRBufComplete
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
int MPIDI_CH3_ReqHandler_UnpackSRBufComplete( MPIDI_VC_t *vc, 
					      MPID_Request *rreq, 
					      int *complete )
{
    int mpi_errno = MPI_SUCCESS;
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3_REQHANDLER_UNPACKSRBUFCOMPLETE);
    
    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3_REQHANDLER_UNPACKSRBUFCOMPLETE);

    MPIDI_CH3U_Request_unpack_srbuf(rreq);

    if ((MPIDI_Request_get_type(rreq) == MPIDI_REQUEST_TYPE_PUT_RESP) ||
	(MPIDI_Request_get_type(rreq) == MPIDI_REQUEST_TYPE_ACCUM_RESP))
    {
	mpi_errno = MPIDI_CH3_ReqHandler_PutAccumRespComplete( 
	    vc, rreq, complete );
    }
    else {
	/* mark data transfer as complete and decrement CC */
	MPIDI_CH3U_Request_complete(rreq);
	*complete = TRUE;
    }

    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3_REQHANDLER_UNPACKSRBUFCOMPLETE);
    return mpi_errno;
}

#undef FUNCNAME
#define FUNCNAME MPIDI_CH3_ReqHandler_UnpackSRBufReloadIOV
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
709
int MPIDI_CH3_ReqHandler_UnpackSRBufReloadIOV( MPIDI_VC_t *vc ATTRIBUTE((unused)), 
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
					      MPID_Request *rreq, 
					      int *complete )
{
    int mpi_errno = MPI_SUCCESS;
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3_REQHANDLER_UNPACKSRBUFRELOADIOV);
    
    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3_REQHANDLER_UNPACKSRBUFRELOADIOV);

    MPIDI_CH3U_Request_unpack_srbuf(rreq);
    mpi_errno = MPIDI_CH3U_Request_load_recv_iov(rreq);
    if (mpi_errno != MPI_SUCCESS) {
	MPIU_ERR_SETFATALANDJUMP(mpi_errno,MPI_ERR_OTHER,"**ch3|loadrecviov" );
    }
    *complete = FALSE;
 fn_fail:
    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3_REQHANDLER_UNPACKSRBUFRELOADIOV);
    return mpi_errno;
}

#undef FUNCNAME
#define FUNCNAME MPIDI_CH3_ReqHandler_ReloadIOV
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
733
734
int MPIDI_CH3_ReqHandler_ReloadIOV( MPIDI_VC_t *vc ATTRIBUTE((unused)), 
				    MPID_Request *rreq, int *complete )
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
{
    int mpi_errno = MPI_SUCCESS;
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3_REQHANDLER_RELOADIOV);
    
    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3_REQHANDLER_RELOADIOV);

    mpi_errno = MPIDI_CH3U_Request_load_recv_iov(rreq);
    if (mpi_errno != MPI_SUCCESS) {
	MPIU_ERR_SETFATALANDJUMP(mpi_errno,MPI_ERR_OTHER,"**ch3|loadrecviov");
    }
    *complete = FALSE;
 fn_fail:
    MPIDI_FUNC_EXIT(MPID_STATE_MPIDI_CH3_REQHANDLER_RELOADIOV);
    return mpi_errno;
}

/* ----------------------------------------------------------------------- */
/* ----------------------------------------------------------------------- */

#undef FUNCNAME
#define FUNCNAME create_derived_datatype
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
static int create_derived_datatype(MPID_Request *req, MPID_Datatype **dtp)
{
    MPIDI_RMA_dtype_info *dtype_info;
    MPID_Datatype *new_dtp;
    int mpi_errno=MPI_SUCCESS;
    MPI_Aint ptrdiff;
    MPIDI_STATE_DECL(MPID_STATE_CREATE_DERIVED_DATATYPE);
    
    MPIDI_FUNC_ENTER(MPID_STATE_CREATE_DERIVED_DATATYPE);

    dtype_info = req->dev.dtype_info;

    /* allocate new datatype object and handle */
    new_dtp = (MPID_Datatype *) MPIU_Handle_obj_alloc(&MPID_Datatype_mem);
    if (!new_dtp) {
773
774
	MPIU_ERR_SETANDJUMP1(mpi_errno,MPI_ERR_OTHER,"**nomem","**nomem %s",
			     "MPID_Datatype_mem" );
775
776
777
778
779
780
781
782
783
784
785
786
    }

    *dtp = new_dtp;
            
    /* Note: handle is filled in by MPIU_Handle_obj_alloc() */
    MPIU_Object_set_ref(new_dtp, 1);
    new_dtp->is_permanent = 0;
    new_dtp->is_committed = 1;
    new_dtp->attributes   = 0;
    new_dtp->cache_id     = 0;
    new_dtp->name[0]      = 0;
    new_dtp->is_contig = dtype_info->is_contig;
787
    new_dtp->max_contig_blocks = dtype_info->max_contig_blocks; 
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
    new_dtp->size = dtype_info->size;
    new_dtp->extent = dtype_info->extent;
    new_dtp->dataloop_size = dtype_info->dataloop_size;
    new_dtp->dataloop_depth = dtype_info->dataloop_depth; 
    new_dtp->eltype = dtype_info->eltype;
    /* set dataloop pointer */
    new_dtp->dataloop = req->dev.dataloop;
    
    new_dtp->ub = dtype_info->ub;
    new_dtp->lb = dtype_info->lb;
    new_dtp->true_ub = dtype_info->true_ub;
    new_dtp->true_lb = dtype_info->true_lb;
    new_dtp->has_sticky_ub = dtype_info->has_sticky_ub;
    new_dtp->has_sticky_lb = dtype_info->has_sticky_lb;
    /* update pointers in dataloop */
    ptrdiff = (MPI_Aint)((char *) (new_dtp->dataloop) - (char *)
                         (dtype_info->dataloop));
    
    /* FIXME: Temp to avoid SEGV when memory tracing */
    new_dtp->hetero_dloop = 0;

    MPID_Dataloop_update(new_dtp->dataloop, ptrdiff);

    new_dtp->contents = NULL;

 fn_fail:
    MPIDI_FUNC_EXIT(MPID_STATE_CREATE_DERIVED_DATATYPE);

    return mpi_errno;
}


#undef FUNCNAME
#define FUNCNAME do_accumulate_op
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
static int do_accumulate_op(MPID_Request *rreq)
{
826
    int mpi_errno = MPI_SUCCESS;
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
    MPI_Aint true_lb, true_extent;
    MPI_User_function *uop;
    MPIDI_STATE_DECL(MPID_STATE_DO_ACCUMULATE_OP);
    
    MPIDI_FUNC_ENTER(MPID_STATE_DO_ACCUMULATE_OP);

    if (rreq->dev.op == MPI_REPLACE)
    {
        /* simply copy the data */
        mpi_errno = MPIR_Localcopy(rreq->dev.user_buf, rreq->dev.user_count,
                                   rreq->dev.datatype,
                                   rreq->dev.real_user_buf,
                                   rreq->dev.user_count,
                                   rreq->dev.datatype);
        if (mpi_errno) {
	    MPIU_ERR_POP(mpi_errno);
	}
        goto fn_exit;
    }

    if (HANDLE_GET_KIND(rreq->dev.op) == HANDLE_KIND_BUILTIN)
    {
        /* get the function by indexing into the op table */
850
        uop = MPIR_OP_HDL_TO_FN(rreq->dev.op);
851
852
853
854
855
856
857
858
859
    }
    else
    {
	/* --BEGIN ERROR HANDLING-- */
        mpi_errno = MPIR_Err_create_code( MPI_SUCCESS, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OP, "**opnotpredefined", "**opnotpredefined %d", rreq->dev.op );
        return mpi_errno;
	/* --END ERROR HANDLING-- */
    }
    
860
    if (MPIR_DATATYPE_IS_PREDEFINED(rreq->dev.datatype))
861
862
863
864
865
866
867
868
869
870
    {
        (*uop)(rreq->dev.user_buf, rreq->dev.real_user_buf,
               &(rreq->dev.user_count), &(rreq->dev.datatype));
    }
    else
    {
	/* derived datatype */
        MPID_Segment *segp;
        DLOOP_VECTOR *dloop_vec;
        MPI_Aint first, last;
871
872
        int vec_len, i, count;
        MPI_Aint type_size;
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
        MPI_Datatype type;
        MPID_Datatype *dtp;
        
        segp = MPID_Segment_alloc();
	/* --BEGIN ERROR HANDLING-- */
        if (!segp)
	{
            mpi_errno = MPIR_Err_create_code( MPI_SUCCESS, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER, "**nomem", 0 ); 
	    MPIDI_FUNC_EXIT(MPID_STATE_DO_ACCUMULATE_OP);
            return mpi_errno;
        }
	/* --END ERROR HANDLING-- */
        MPID_Segment_init(NULL, rreq->dev.user_count,
			  rreq->dev.datatype, segp, 0);
        first = 0;
        last  = SEGMENT_IGNORE_LAST;
        
        MPID_Datatype_get_ptr(rreq->dev.datatype, dtp);
891
        vec_len = dtp->max_contig_blocks * rreq->dev.user_count + 1; 
892
893
894
895
896
897
898
899
900
901
902
        /* +1 needed because Rob says so */
        dloop_vec = (DLOOP_VECTOR *)
            MPIU_Malloc(vec_len * sizeof(DLOOP_VECTOR));
	/* --BEGIN ERROR HANDLING-- */
        if (!dloop_vec)
	{
            mpi_errno = MPIR_Err_create_code( MPI_SUCCESS, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER, "**nomem", 0 ); 
	    MPIDI_FUNC_EXIT(MPID_STATE_DO_ACCUMULATE_OP);
            return mpi_errno;
        }
	/* --END ERROR HANDLING-- */
903

904
905
906
907
908
909
        MPID_Segment_pack_vector(segp, first, &last, dloop_vec, &vec_len);
        
        type = dtp->eltype;
        MPID_Datatype_get_size_macro(type, type_size);
        for (i=0; i<vec_len; i++)
	{
910
            MPIU_Assign_trunc(count, (dloop_vec[i].DLOOP_VECTOR_LEN)/type_size, int);
911
912
913
914
915
916
917
918
919
920
921
            (*uop)((char *)rreq->dev.user_buf + MPIU_PtrToAint(dloop_vec[i].DLOOP_VECTOR_BUF),
                   (char *)rreq->dev.real_user_buf + MPIU_PtrToAint(dloop_vec[i].DLOOP_VECTOR_BUF),
                   &count, &type);
        }
        
        MPID_Segment_free(segp);
        MPIU_Free(dloop_vec);
    }

 fn_exit:
    /* free the temporary buffer */
922
    MPIR_Type_get_true_extent_impl(rreq->dev.datatype, &true_lb, &true_extent);
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
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972
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977
978
979
980
981
982
983
984
985
986
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    MPIU_Free((char *) rreq->dev.user_buf + true_lb);

    MPIDI_FUNC_EXIT(MPID_STATE_DO_ACCUMULATE_OP);

    return mpi_errno;
 fn_fail:
    goto fn_exit;
}

static int entered_flag = 0;
static int entered_count = 0;

/* Release the current lock on the window and grant the next lock in the
   queue if any */
#undef FUNCNAME
#define FUNCNAME MPIDI_CH3I_Release_lock
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
int MPIDI_CH3I_Release_lock(MPID_Win *win_ptr)
{
    MPIDI_Win_lock_queue *lock_queue, **lock_queue_ptr;
    int requested_lock, mpi_errno = MPI_SUCCESS, temp_entered_count;
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3I_RELEASE_LOCK);
    
    MPIDI_FUNC_ENTER(MPID_STATE_MPIDI_CH3I_RELEASE_LOCK);

    if (win_ptr->current_lock_type == MPI_LOCK_SHARED) {
        /* decr ref cnt */
        /* FIXME: MT: Must be done atomically */
        win_ptr->shared_lock_ref_cnt--;
    }

    /* If shared lock ref count is 0 (which is also true if the lock is an
       exclusive lock), release the lock. */
    if (win_ptr->shared_lock_ref_cnt == 0) {

	/* This function needs to be reentrant even in the single-threaded case
           because when going through the lock queue, the do_simple_get 
	   called in the 
	   lock-get-unlock case may itself cause a request to complete, and 
	   this function
           may again get called in the completion action in 
	   ch3u_handle_send_req.c. To
           handle this possibility, we use an entered_flag. If the flag is 
	   not 0, we simply
	   increment the entered_count and return. The loop through the lock 
	   queue is repeated 
	   if the entered_count has changed while we are in the loop.
	 */
	if (entered_flag != 0) {
	    entered_count++;
	    goto fn_exit;
	}
	else {
	    entered_flag = 1;
	    temp_entered_count = entered_count;
	}

	do { 
	    if (temp_entered_count != entered_count) temp_entered_count++;

	    /* FIXME: MT: The setting of the lock type must be done atomically */
	    win_ptr->current_lock_type = MPID_LOCK_NONE;
	    
	    /* If there is a lock queue, try to satisfy as many lock requests as 
	       possible. If the first one is a shared lock, grant it and grant all 
	       other shared locks. If the first one is an exclusive lock, grant 
	       only that one. */
	    
	    /* FIXME: MT: All queue accesses need to be made atomic */
	    lock_queue = (MPIDI_Win_lock_queue *) win_ptr->lock_queue;
	    lock_queue_ptr = (MPIDI_Win_lock_queue **) &(win_ptr->lock_queue);
	    while (lock_queue) {
		/* if it is not a lock-op-unlock type case or if it is a 
		   lock-op-unlock type case but all the data has been received, 
		   try to acquire the lock */
		if ((lock_queue->pt_single_op == NULL) || 
		    (lock_queue->pt_single_op->data_recd == 1)) {
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