Attention is currently required from: fixeria, laforge, pespin.

neels has posted comments on this change. ( 
https://gerrit.osmocom.org/c/libosmocore/+/36538?usp=email )

Change subject: add osmo_stats_report_lock api
......................................................................


Patch Set 2:

(1 comment)

Patchset:

PS2:
> And for the case at hand, I still belive it makes much more sense to simply 
> use an osmo_itq to pass  […]
I'm in a bit of a communication dilemma:

- laforge says don't use any mutexes and just directly write to rate_ctr from 
the other thread.
- pespin says use an osmo_it_q here
- pespin says use intermediate storage with mutexes in a comment at 
https://gerrit.osmocom.org/c/osmo-hnbgw/+/36385
- nhofmeyr says directly write to rate_ctr, but still have a mutex around stats 
reporting, so that counter pairs are always in sync.

I interpret it so that laforge is radically "bare-metal" and simple, pespin 
radically thread-safe and elaborate, and i'm actually in the middle, a little 
more to laforge's side.

Yet it seems you guys are missing the actual point for this patch here:
A mutex lock around stats reporting is a very basic and very powerful tool.
It allows a multi-threaded application to decide which stats updates will 
always be in sync.

This patch adds this feature, in a completely optional way.
It is up to the application how to make use of it,
so let's discuss those details at the other patches.

I fail to see any problem with this patch and don't know how we can reach a 
consensus on this. Neither of us seems to accept the others' arguments. At 
least I still think that I'm right...



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Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-Change-Id: Ib335bea7d2a440ca284e6c439066f96456bf2c2d
Gerrit-Change-Number: 36538
Gerrit-PatchSet: 2
Gerrit-Owner: neels <nhofm...@sysmocom.de>
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