/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
 *  (C) 2001 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */
#if !defined(MPICH_MPIDRMA_H_INCLUDED)
#define MPICH_MPIDRMA_H_INCLUDED

/*
 * RMA Declarations.  We should move these into something separate from
 * a Request.
 */
/* to send derived datatype across in RMA ops */
typedef struct MPIDI_RMA_dtype_info { /* for derived datatypes */
    int           is_contig; 
    int           max_contig_blocks;
    int           size;     
    MPI_Aint      extent;   
    int           dataloop_size; /* not needed because this info is sent in packet header. remove it after lock/unlock is implemented in the device */
    void          *dataloop;  /* pointer needed to update pointers
                                 within dataloop on remote side */
    int           dataloop_depth; 
    int           eltype;
    MPI_Aint ub, lb, true_ub, true_lb;
    int has_sticky_ub, has_sticky_lb;
} MPIDI_RMA_dtype_info;

/* for keeping track of RMA ops, which will be executed at the next sync call */
typedef struct MPIDI_RMA_ops {
    struct MPIDI_RMA_ops *next;  /* pointer to next element in list */
    /* FIXME: It would be better to setup the packet that will be sent, at 
       least in most cases (if, as a result of the sync/ops/sync sequence,
       a different packet type is needed, it can be extracted from the 
       information otherwise stored). */
    /* FIXME: Use enum for RMA op type? */
    int type;  /* MPIDI_RMA_PUT, MPID_REQUEST_GET,
		  MPIDI_RMA_ACCUMULATE, MPIDI_RMA_LOCK */
    void *origin_addr;
    int origin_count;
    MPI_Datatype origin_datatype;
    int target_rank;
    MPI_Aint target_disp;
    int target_count;
    MPI_Datatype target_datatype;
    MPI_Op op;  /* for accumulate */
    int lock_type;  /* for win_lock */
    /* Used to complete operations */
    struct MPID_Request *request;
    MPIDI_RMA_dtype_info dtype_info;
    void *dataloop;
} MPIDI_RMA_ops;

typedef struct MPIDI_PT_single_op {
    int type;  /* put, get, or accum. */
    void *addr;
    int count;
    MPI_Datatype datatype;
    MPI_Op op;
    void *data;  /* for queued puts and accumulates, data is copied here */
    MPI_Request request_handle;  /* for gets */
    int data_recd;  /* to indicate if the data has been received */
} MPIDI_PT_single_op;

typedef struct MPIDI_Win_lock_queue {
    struct MPIDI_Win_lock_queue *next;
    int lock_type;
    MPI_Win source_win_handle;
    MPIDI_VC_t * vc;
    struct MPIDI_PT_single_op *pt_single_op;  /* to store info for lock-put-unlock optimization */
} MPIDI_Win_lock_queue;

/* Routine use to tune RMA optimizations */
void MPIDI_CH3_RMA_SetAccImmed( int flag );

#endif