mirror of
https://github.com/matrix-construct/construct
synced 2024-11-01 03:18:54 +01:00
114 lines
3.4 KiB
C++
114 lines
3.4 KiB
C++
// The Construct
|
|
//
|
|
// Copyright (C) The Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2020 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_VM_EVAL_H
|
|
|
|
namespace ircd::m::vm
|
|
{
|
|
struct eval;
|
|
|
|
string_view evaluator(const eval &) noexcept;
|
|
|
|
string_view loghead(const mutable_buffer &, const eval &);
|
|
string_view loghead(const eval &); // single tls buffer
|
|
|
|
const event *find_pdu(const eval &, const event::id &) noexcept;
|
|
eval *find_parent(const eval &, const ctx::ctx & = ctx::cur()) noexcept;
|
|
eval *find_root(const eval &, const ctx::ctx & = ctx::cur()) noexcept;
|
|
|
|
size_t prefetch_refs(const eval &);
|
|
}
|
|
|
|
/// Event Evaluation Device
|
|
///
|
|
/// This object conducts the evaluation of an event or a tape of multiple
|
|
/// events. An event is evaluated in an attempt to execute it. Events which
|
|
/// fail during evaluation won't be executed; such is the case for events which
|
|
/// have already been executed, or events which are invalid or lead to invalid
|
|
/// transitions or actions of the machine etc.
|
|
///
|
|
struct ircd::m::vm::eval
|
|
:instance_list<eval>
|
|
{
|
|
using each_eval = closure_bool<std::function, eval &>;
|
|
using each_pdu = closure_bool<std::function, const event &>;
|
|
|
|
static uint64_t id_ctr;
|
|
static uint executing;
|
|
static uint injecting;
|
|
|
|
const vm::opts *opts {&default_opts};
|
|
const vm::copts *copts {nullptr};
|
|
ctx::ctx *ctx {ctx::current};
|
|
vm::eval *parent {nullptr};
|
|
vm::eval *child {nullptr};
|
|
uint64_t id {++id_ctr};
|
|
uint64_t sequence {0};
|
|
std::shared_ptr<db::txn> txn;
|
|
unique_mutable_buffer buf;
|
|
size_t evaluated {0};
|
|
size_t accepted {0};
|
|
size_t faulted {0};
|
|
system_point start;
|
|
|
|
vector_view<const m::event> pdus;
|
|
const json::iov *issue {nullptr};
|
|
const event *event_ {nullptr};
|
|
string_view room_id;
|
|
event::id::buf event_id;
|
|
event::conforms report;
|
|
string_view room_version;
|
|
hook::base *hook {nullptr};
|
|
vm::phase phase {vm::phase(0)};
|
|
bool room_internal {false};
|
|
|
|
public:
|
|
operator const event::id::buf &() const
|
|
{
|
|
return event_id;
|
|
}
|
|
|
|
eval(const vm::opts &);
|
|
eval(const vm::copts &);
|
|
eval(const event &, const vm::opts & = default_opts);
|
|
eval(const vector_view<const m::event> &, const vm::opts & = default_opts);
|
|
eval(const json::array &, const vm::opts & = default_opts);
|
|
eval(json::iov &event, const json::iov &content, const vm::copts & = default_copts);
|
|
eval() = default;
|
|
eval(eval &&) = delete;
|
|
eval(const eval &) = delete;
|
|
eval &operator=(eval &&) = delete;
|
|
eval &operator=(const eval &) = delete;
|
|
~eval() noexcept;
|
|
|
|
// Tools for all evals
|
|
static bool for_each(const each_eval &);
|
|
static bool for_each_pdu(const each_pdu &);
|
|
static bool for_each(const ctx::ctx *const &, const each_eval &);
|
|
static size_t count(const ctx::ctx *const &);
|
|
|
|
// Event snoop interface
|
|
static const event *find_pdu(const event::id &);
|
|
static size_t count(const event::id &);
|
|
static eval *find(const event::id &);
|
|
static eval &get(const event::id &);
|
|
|
|
// Sequence related interface
|
|
static bool sequnique(const uint64_t &seq);
|
|
static eval *seqnext(const uint64_t &seq);
|
|
static eval *seqmax();
|
|
static eval *seqmin();
|
|
static void seqsort();
|
|
};
|
|
|
|
template<>
|
|
decltype(ircd::m::vm::eval::list)
|
|
ircd::instance_list<ircd::m::vm::eval>::list;
|