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ircd:Ⓜ️:vm: Improve event_id preposition prior to eval.

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This commit is contained in:
Jason Volk 2020-11-29 16:43:52 -08:00
parent 02dc164d66
commit a9f6782309
1 changed files with 34 additions and 31 deletions
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65
matrix/vm_execute.cc
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@ -298,21 +298,44 @@ try
m::version(room_version_buf, room{eval.room_id}, std::nothrow)
};
// Copy the event_id into the eval buffer
eval.event_id =
{
!opts.edu && !event.event_id && eval.room_version == "3"?
event::id::buf{event::id::v3{eval.event_id, event}}:
!opts.edu && !event.event_id?
event::id::buf{event::id::v4{eval.event_id, event}}:
!opts.edu?
event::id::buf{event.event_id}:
event::id::buf{}
};
// We have to set the event_id in the event instance if it didn't come
// with the event JSON.
if(!opts.edu && !event.event_id)
mutable_cast(event).event_id = eval.room_version == "3"?
event::id{event::id::v3{eval.event_id, event}}:
event::id{event::id::v4{eval.event_id, event}};
// If we set the event_id in the event instance we have to unset
// it so other contexts don't see an invalid reference.
const unwind restore_event_id{[&event]
const scope_restore event_event_id
{
mutable_cast(event).event_id = json::get<"event_id"_>(event)?
mutable_cast(event).event_id,
!opts.edu && eval.event_id?
event::id{eval.event_id}:
!opts.edu?
event.event_id:
m::event::id{};
}};
event::id{}
};
// Set a member pointer to the event currently being evaluated. This
// allows other parallel evals to have deep access to this eval. It also
// will be used to count this event as currently being evaluated.
assert(!eval.event_);
const scope_restore eval_event
{
eval.event_, &event
};
// If the event is already being evaluated, wait here until the other
// evaluation is finished. If the other was successful, the exists()
@ -338,26 +361,6 @@ try
if(!eval.copts && m::exists(event.event_id))
return fault::EXISTS;
// Set a member pointer to the event currently being evaluated. This
// allows other parallel evals to have deep access to this eval. It also
// will be used to count this event as currently being evaluated.
assert(!eval.event_);
const scope_restore eval_event
{
eval.event_, &event
};
// Ensure the member pointer/buffer to the eval's event_id is set in case
// anything needs this to be in sync with event.event_id. This may be also
// be used to onsider this event as currently being evaluated.
const scope_restore<event::id> eval_event_id
{
eval.event_id,
event.event_id?
event.event_id:
eval.event_id
};
return execute_du(eval, event);
}
catch(const vm::error &e)