On 2/1/24 7:03 AM, Enrico Weigelt, metux IT consult wrote:
Hello folks,
I'm currently writing an extension that's storing per-client data.
Where's is the right place to free up all resources ? I guess the client
state xace hook - but what's the difference between retained and gone ?
I don't think you need xace for this: CloseDownClient calls
CallCallbacks((&ClientStateCallback), (void *) &clientinfo) so you can
register a callback on that.
"Retained" means that the client's resources should remain allocated in
the server even after the client is gone. It's not a super useful
mechanic these days but you'll have to decide whether a "retained"
client disappearing should free your per-client data or not.
The other option is to use AddResource to allocate resources associated
with a particular client's XIDs. Those are freed by
FreeClientNeverRetainResources or FreeClientResources, depending on
whether the client is supposed to be retained and whether the resource
type in question is marked with the RC_NEVERRETAIN flag.
-- Aaron
thx
--mtx
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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
i...@metux.net -- +49-151-27565287
