/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
 *  (C) 2012 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */

#include "mpidimpl.h"

#undef FUNCNAME
#define FUNCNAME MPID_Imrecv
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
int MPID_Mrecv(void *buf, int count, MPI_Datatype datatype,
               MPIR_Request *message, MPI_Status *status, MPIR_Request **rreq)
{
    int mpi_errno = MPI_SUCCESS;
    *rreq = NULL;

    if (message == NULL) {
        /* treat as though MPI_MESSAGE_NO_PROC was passed */
        MPIR_Status_set_procnull(status);
        goto fn_exit;
    }

    /* There is no optimized MPID_Mrecv at this time because there is no real
     * optimization potential in that case.  MPID_Recv exists to prevent
     * creating a request unnecessarily for messages that are already present
     * and eligible for immediate completion. */
    mpi_errno = MPID_Imrecv(buf, count, datatype, message, rreq);
    if (mpi_errno) MPIR_ERR_POP(mpi_errno);

fn_exit:
    return mpi_errno;
fn_fail:
    goto fn_exit;
}