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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2021 Google, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef OPAL_MCA_SMSC_XPMEM_SMSC_XPMEM_H
#define OPAL_MCA_SMSC_XPMEM_SMSC_XPMEM_H
#include "opal_config.h"
#include "opal/mca/smsc/smsc.h"
mca_smsc_endpoint_t *mca_smsc_xpmem_get_endpoint(opal_proc_t *peer_proc);
void mca_smsc_xpmem_return_endpoint(mca_smsc_endpoint_t *endpoint);
int mca_smsc_xpmem_copy_to(mca_smsc_endpoint_t *endpoint, void *local_address, void *remote_address,
size_t size, void *reg_handle);
int mca_smsc_xpmem_copy_from(mca_smsc_endpoint_t *endpoint, void *local_address,
void *remote_address, size_t size, void *reg_handle);
/**
* @brief Map a peer memory region into this processes address space.
*
* See the description in smsc.h.
*
* Caveats: XPMEM does not support futex operations within the region. Attempts to wake the
* process owning the mutex will result in an EFAULT error code.
*/
void *mca_smsc_xpmem_map_peer_region(mca_smsc_endpoint_t *endpoint, uint64_t flags,
void *remote_ptr, size_t size, void **local_ptr);
void mca_smsc_xpmem_unmap_peer_region(void *ctx);
/* unsupported interfaces defined to support MCA direct */
void *mca_smsc_xpmem_register_region(void *local_address, size_t size);
void mca_smsc_xpmem_deregister_region(void *reg_data);
#endif /* OPAL_MCA_SMSC_XPMEM_SMSC_XPMEM_H */
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