mirror of
https://github.com/matrix-construct/construct
synced 2024-11-16 23:10:54 +01:00
49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_M_EVENT_HORIZON_H
|
|
|
|
/// Interface to the set of unresolved events. This set contains event_id's
|
|
/// which the server does not have. For each event_id there is an event::idx
|
|
/// of an event which made a reference to the event_id. There may be multiple
|
|
/// entries for an event_id.
|
|
///
|
|
/// This information helps construct the dependency graph in event::refs out of
|
|
/// order; it is anti-reference which is removed after the event is processed.
|
|
/// Each event::idx for an event_id in the set is then able to be "reprocessed"
|
|
/// in some way; at a minimum the reprocessing removes this event_id|event::idx
|
|
/// entry (see: dbs/event_horizon related).
|
|
///
|
|
class ircd::m::event::horizon
|
|
{
|
|
event::id event_id;
|
|
|
|
public:
|
|
using closure_bool = std::function<bool (const event::id &, const event::idx &)>;
|
|
|
|
static bool for_every(const closure_bool &);
|
|
bool for_each(const closure_bool &) const;
|
|
bool has(const event::idx &) const;
|
|
size_t count() const;
|
|
|
|
horizon(const event::id &);
|
|
horizon() = default;
|
|
|
|
static bool has(const event::id &);
|
|
static size_t rebuild();
|
|
};
|
|
|
|
inline
|
|
ircd::m::event::horizon::horizon(const event::id &event_id)
|
|
:event_id{event_id}
|
|
{
|
|
assert(event_id);
|
|
}
|