xcom_interface.h

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/* Copyright (c) 2015, 2022, Oracle and/or its affiliates.
 
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   it under the terms of the GNU General Public License, version 2.0,
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#ifndef XCOM_INTERFACE_H
#define XCOM_INTERFACE_H
 
#include "xcom/site_struct.h"
#include "xcom/xcom_cache.h"
 
void deliver_view_msg(site_def const *site);
void deliver_global_view_msg(site_def const *site, node_set const ns,
                             synode_no message_id);
 
/**
  Delivers the @c app payload to XCom's upper layer, e.g. GCS.
 
  Please note the following contract regarding the parameter of this function:
  If @c app_status is @c delivery_ok, then it means that XCom reached
  consensus on @c app. In this situation, @c pma MUST point to the Paxos
  instance (@c pax_machine) where @c app got consensus on. In other words, @c
  pma MUST NOT be NULL.
 
  In summary, this function is expected to be called as follows if a payload
  @c p reached consensus:
 
    deliver_to_app(<pointer to pax_machine where p was decided>, p, delivery_ok)
 
  This function is expected to be called as follows if a payload @c p did NOT
  reach consensus:
 
    deliver_to_app(_, p, delivery_failure)
 
  Where the @c pma argument may be a pointer to the pax_machine where @c p
  failed to get consensus, or NULL.
 
  Failure do adhere to this contract will result in an assert failure, at least
  on non-release builds.
 
  @param pma The Paxos instance where the @c app payload obtained consensus
  @param app The payload that was decided for the Paxos instance @c pma
  @param app_status The reason for @c app delivery: @c delivery_ok if the @c app
  payload reached consensus on the @c pma Paxos instance, or @c delivery_failure
  if XCom was unable to reach consensus
 */
void deliver_to_app(pax_machine *pma, app_data_ptr app,
                    delivery_status app_status);
 
void deliver_config(app_data_ptr a);
 
void deinit_xcom_interface();
 
#endif