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EventRegistry/Func: Disable events when all bodies are disabled

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This is just a small optimization on top of what is there.

Add state to Func for tracking if any enabled bodies exist which
allows us to propagate it up to the EventHandler::bool() operator.
In turn, when all bodies of an event's Func have been runtime disabled,
the event itself will not be invoked anymore.

Experiments have shown that this allows runtime toggling of new_event()
without performance impact when disabled. This could enable use-cases
where new_packet() handlers are enabled for a split second once in a
while to either dump or sample raw packet data at runtime.
This commit is contained in:
Arne Welzel 2022-12-08 12:55:47 +01:00
parent 92e4c11914
commit 21cc5f9132
6 changed files with 163 additions and 7 deletions
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7
testing/btest/Baseline/broker.event-group-interaction/recv.recv.out Normal file
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### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
receiver added peer: endpoint=127.0.0.1 msg=handshake successful
receiver got ping: my-message, 1
receiver got ping: my-message, 2
receiver got ping: my-message, 3
receiver got ping: my-message, 4
receiver got ping: my-message, 5