When linking, detach the no longer used SOG's from backup so they can be
collected. Since their Children collection is never emptied, they prevent
their former SOPs from being collected as well.
This replaces EventManager.OnLoginsEnabled which only fired when logins were first enabled
and was affected by a bug where it would never fire if the region started with logins disabled.
This saves listeners from having to re-retrieve the scene from their own lists, which won't work anyway if multiple regions with the same name have been allowed
Giving a large folder from one avatar to another was causing a long delay when handled synchronously, since it took some time to retrieve the necessary data from the inventory service.
Handling this asynchronously instead stops this delay from disrupting all avatars in the scene. This has been shown in OSGrid.
I see no reason for not handling all IM messages asynchronously, just as incoming chat is handled asynchronously, so this has been switched for all instant messages.
Thanks to Nebadon for testing this change out.
Even where checks are being made they aren't enough since they all assume that the Animator they just checked is still there in the next line, which is not necessarily the case without locking.
The memory used is small and these should be GC'd anyway when the SP is released. If this is not happening then the wider problem of old SPs being retained needs to be resolved.
This was because teleporting to the new region invoked the new session setup code before the agent was removed from the old region, which then invoked the session teardown code.
Now, we only invoke the teardown code if the region ID occupied by the agent being removed is the same as the one registered for the current session.
This may well come back in the future when this subinterface is actually used but it currently isn't and I feel the name was poor.
Everything uses IClientAPI.RemoveEndPoint which also returned the full endpoint rather than just the ip address.
Also change to use standard table formatting
"show circuits" and "show connections" console commands are very similar but access different data structures.
The encodings are thread-safe and already used in such a manner in other places.
This isn't done where Byte Order Mark output is suppressed, since Encoding.UTF8 is constructed to output the BOM.
This is only currently meant for use by regression tests that don't have any issues if XEngine is started up quickly, since no other operations will be occuring simultaneously.
Therefore, this is not yet documented externally.
This also makes the detection in SP.FindNextAvailableSitTarget() and SendSitResponse() identical.
Previously they varied slightly (SendSitResponse didn't check for an older type of invalid quaternion) but the practical effect is most probably zero.
This is to fix a regression starting from 5301648 where attachments had to start being deleted before persistence in order to avoid race conditions with hud update threads.
This is to avoid the worst of the problems in mono 2.6, 2.10 where an aborted thread does not always release all its locks.
This very short grace period is identical to the existing behaviour when a script is removed from the scene.
Melanie