mirror of
https://github.com/matrix-construct/construct
synced 2024-07-04 09:38:37 +02:00
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_M_EVENT_HORIZON_H
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/// Interface to the set of unresolved events. This set contains event_id's
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/// which the server does not have. For each event_id in the set, there is an
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/// event::idx of an event which made a reference to the event_id. There may be
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/// multiple entries for an event_id.
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///
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/// This information helps construct the dependency graph in event::refs out of
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/// order; it is anti-reference which is removed after the event is processed.
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/// Each event::idx for an event_id in the set is then able to be "reprocessed"
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/// in some way; at a minimum the reprocessing removes the event_id|event::idx
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/// entry (see: dbs/event_horizon related).
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///
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class ircd::m::event::horizon
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{
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event::id event_id;
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public:
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using closure_bool = std::function<bool (const event::id &, const event::idx &)>;
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static bool for_every(const closure_bool &);
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bool for_each(const closure_bool &) const;
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bool has(const event::idx &) const;
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size_t count() const;
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horizon(const event::id &);
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horizon() = default;
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static bool has(const event::id &);
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static size_t rebuild();
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};
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inline
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ircd::m::event::horizon::horizon(const event::id &event_id)
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:event_id{event_id}
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{
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assert(event_id);
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}
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