[Opensim-dev] Minimum OpenSim mono version now 2.4? (was Re: [Opensim-commits] r10113 - trunk)

[Teravus Ovares]

After fighting with it a bit,  JustinCC and I discovered that the root
cause of this issue was that libOMV and associated dependencies were
compiled as a .NET 3.5 assembly version target.   Unfortunately,
officially, it will only compile as a 3.5 target because it makes use
of System.Threading.ReaderWriterLockImpl, HashSet<T> and TimeZoneInfo.
  After a bit of hacking, I managed to compile LibOMV as a .NET 2.0
assembly.    It's entirely swappable with the official 0.7.0 libomv.
 What I mean by that is there were no API elements that were changed.
You should be able to replace this copy with the official 0.7.0
compiled yourself in 3.5 and recompile with no side effects.  The only
down side, is that the 3.5 assembly requires mono 2.4 or above.    The
2.0 assembly in the OpenSimulator repository should work on older
versions of mono.    I'm still leaving the 2.4 requirement in the
readme file because, according to the libomv developers, there were
some serious bugs in mono in some versions previous to 2.4 where it
would occasionally lose references to sockets and we do want to
promote a version that works correctly, however, this commit should
resolve this thread and the HttpServer typeload exception mantis

Full Commit Log:

Commit:31b60731497b21c163aa4058cada258e54deb835
opensim: teravus master * r31b60731497b /bin/ (10 files):
* * Commit a slightly modified OpenMetaverse compiled as a .NET 2.0 target
* Hopefully this allows older mono versions to still work.
* A couple of points of note:
* TimeZoneInfo..   replaced with DateTime.UtcNow -
TimeSpan.FromHours(7);  in
InventoryManager.CreateItemFromAssetResponse
* HashSet<uint> replaced with Dictionary<uint,object> for
OpenMetaverse.IncomingPacketIDCollection.TryEnqueue
* Force use of the managed version of ReaderWriterLockSlim (don't use
the pre-processor defs) in DoubleDictionary/HttpServer

Regards

Teravus


On Tue, Aug 4, 2009 at 11:28 PM, BlueWall Slade<bluewall.slade at gmail.com> wrote:
> I am running openSuSe 11.1 with mono 2.4.2. I haven't seen any signs of the
> mini-trampoline errors on it.
>
> A side note, I'm also seeing some pretty flat memory usage trends since our
> libomv update.
>
> Thanks!
> BlueWall
>
> On Mon, Aug 3, 2009 at 1:44 PM, Justin Clark-Casey
> <jjustincc at googlemail.com> wrote:
>>
>> Hi Teravus.  I take it this means that mono 2.0.1 is no longer usable with
>> trunk?  This is somewhat inconvenient since
>> Ubuntu and OpenSUSE still ship mono 2.0.1 in their distros (though both
>> will include 2.4 in the next release).  But if
>> mono 2.0.1 is now unusable then that's just how it is.
>>
>> I'm also not sure if mono 2.4 still has the 'mini-trampoline' assertion VM
>> termination when many scripts are being
>> loaded on initial startup (this problem isn't present in mono 2.0.1).
>>
>> teravus at opensimulator.org wrote:
>> > Author: teravus
>> > Date: 2009-08-01 11:59:34 -0700 (Sat, 01 Aug 2009)
>> > New Revision: 10113
>> >
>> > Modified:
>> >    trunk/README.txt
>> > Log:
>> > * Update ReadMe.txt to reflect feedback by testers
>> >
>> > Modified: trunk/README.txt
>> > ===================================================================
>> > --- trunk/README.txt  2009-08-01 14:26:00 UTC (rev 10112)
>> > +++ trunk/README.txt  2009-08-01 18:59:34 UTC (rev 10113)
>> > @@ -25,7 +25,7 @@
>> >  == Installation on Linux ==
>> >
>> >  Prereqs:
>> > - * Mono >= 2.0.1 (>= 2.4.2 is better)
>> > + * Mono >= 2.4 (>= 2.4.2 is better)
>> >   * Nant >= 0.86beta
>> >   * sqlite3 or mysql 5.x (you'll need a backend database)
>> >
>> >
>> > _______________________________________________
>> > Opensim-commits mailing list
>> > Opensim-commits at lists.berlios.de
>> > https://lists.berlios.de/mailman/listinfo/opensim-commits
>> >
>>
>> --
>> justincc
>> Justin Clark-Casey
>> http://justincc.wordpress.com
>> _______________________________________________
>> Opensim-dev mailing list
>> Opensim-dev at lists.berlios.de
>> https://lists.berlios.de/mailman/listinfo/opensim-dev
>
>
> _______________________________________________
> Opensim-dev mailing list
> Opensim-dev at lists.berlios.de
> https://lists.berlios.de/mailman/listinfo/opensim-dev
>
>