openmpi/opal/mca/btl/vader/btl_vader_xpmem.h

/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
 * Copyright (c) 2013-2014 Los Alamos National Security, LLC. All rights
 *                         reserved.
 * Copyright (c) 2016      ARM, Inc. All rights reserved.
 * $COPYRIGHT$
 *
 * Additional copyrights may follow
 *
 * $HEADER$
 */

#if !defined(MCA_BTL_VADER_XPMEM_H)
#define MCA_BTL_VADER_XPMEM_H

#if OPAL_BTL_VADER_HAVE_XPMEM

#if defined(HAVE_XPMEM_H)
  #include <xpmem.h>

  typedef struct xpmem_addr xpmem_addr_t;
#elif defined(HAVE_SN_XPMEM_H)
  #include <sn/xpmem.h>

  typedef int64_t xpmem_segid_t;
  typedef int64_t xpmem_apid_t;
#endif

#include <opal/mca/rcache/base/rcache_base_vma.h>
#include <opal/mca/rcache/rcache.h>

/* look up the remote pointer in the peer rcache and attach if
 * necessary */

/* largest address we can attach to using xpmem */
#if defined(__x86_64__)
#define VADER_MAX_ADDRESS ((uintptr_t)0x7ffffffff000ul)
#else
#define VADER_MAX_ADDRESS XPMEM_MAXADDR_SIZE
#endif

struct mca_btl_base_endpoint_t;

int mca_btl_vader_xpmem_init (void);

mca_rcache_base_registration_t *vader_get_registation (struct mca_btl_base_endpoint_t *endpoint, void *rem_ptr,
                                                       size_t size, int flags, void **local_ptr);

void vader_return_registration (mca_rcache_base_registration_t *reg, struct mca_btl_base_endpoint_t *endpoint);
void mca_btl_vader_xpmem_cleanup_endpoint (struct mca_btl_base_endpoint_t *ep);

#else

static inline mca_rcache_base_registration_t *vader_get_registation (struct mca_btl_base_endpoint_t *endpoint, void *rem_ptr,
                                                                     size_t size, int flags, void **local_ptr)
{
    (void) endpoint;
    (void) rem_ptr;
    (void) size;
    (void) flags;
    (void) local_ptr;
    return NULL;
}

static inline void vader_return_registration (mca_rcache_base_registration_t *reg, struct mca_btl_base_endpoint_t *endpoint)
{
    (void) reg;
    (void) endpoint;
}

#endif /* OPAL_BTL_VADER_HAVE_XPMEM */

#endif