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multiple scripts in the same linkset can cause unnecessary thread aborts.
The first llDie() could lock Scene.m_deleting_scene_object.
The second llDie() would then wait at this lock.
The first llDie() would go on to remove the second script but always abort it since the second script's WorkItem would not go away.
Easiest solution here is to remove the m_deleting_scene_object since it's no longer justified - we no longer lock m_parts but take a copy instead.
This also requires an adjustment in XEngine.OnRemoveScript not to use instance.ObjectID instead when firing the OnObjectRemoved event.
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to release locks, resulting in a crippled simulator.
This seems to be a particular problem with ReaderWriterLockSlim, though other locks can be affected as well.
It has been seen to happen when llDie() is called in a linkset running more than one script.
Alleviation here means supplying a ScriptInstance.Stop() timeout of 1000ms rather than 0ms, to give events a chance to complete.
Also, we check the IsRunning status at the top of the ScriptInstance.EventProcessor() so that another event doesn't start in the mean time.
Ultimately, a better solution may have to be found since a long-running event would still exceed the timeout and be aborted.
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it more understandable as to what it is and what it does (hold a thread pool work item for a waiting of in-progress event)
Also add other various illustrative comments
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scripts do that, and that fails the whole thing.
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command
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.NET 4.0 added the method Stream.CopyTo(stream, bufferSize). For .NET 3.5
and before, WebUtil defined an extension method for Stream with the signature
Stream.CopyTo(stream, maxBytesToCopy). The meaning of the second parameter
is different in the two forms and depending on which compiler and/or
runtime you use, you could get one form or the other. Crashes ensue.
This change renames the WebUtil stream copy method to something that
cannot be confused with the new CopyTo method defined in .NET 4.0.
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as opposed to how it was first designed.
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that data providers can verify authenticity if they want.
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capitalization of 'name' to lower case, also in the same <grid> section.
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thread.
This was previous behaviour anyway.
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saying afterwards that we added it.
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rather than what they've just done.
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at the asset service at once.
This may (or may not) improve reliability for http://opensimulator.org/mantis/view.php?id=5898
Quick tests show that save time is the same.
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This is configured in the new [Estates] section of OpenSim.ini.
If a default estate is configured then all new regions are automatically joined to it instead of asking the user.
If the default estate does not already exist then it is created.
Current default behaviour remains the same - the user is asked for estate details when necessary.
Thanks to Frenando Oliveira for the patch which I adapated further.
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makes use of the SLUtil copy via a method rather than each LLClientView loading a separate copy.
As per opensim-users mailing list discussion.
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the PostToService variants.
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- Added an inventory cache for caching root and system folders
- Synchronized the remote inventory connector, so that all the remote inventory calls are serialized
This will not make much difference in the hold ups. We'd have to move the FireAndForget high up to AddInventoryItem, but that opens up a can of worms regarding the notification of the recipient... the recipient would be notified of the offer before the items are effectively in his inventory, which could lead to surprises.
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This is rather than checking whether the avatar is sitting and doing its own calculation.
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this is handled by the necessary ParentPart check
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(saving extra null checks, etc.)
However, it looks like we should retain SP.ParentID since it's much easier to use that in places where another thread could change ParentPart to null.
Otherwise one has to clumsily put ParentPart in a reference, etc. to avoid a race.
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(part != null), rather than having unnecessary multiple checks
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functional asset posts so that the client threads doesn't freeze (but the network posts are serialized).
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ParentPart is still not null if the ParentID != 0
Another thread could come in and stand the avatar between those two instructions.
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This should not currently be used in any circumstances except for experimentation.
Database tables used by this plugin can still change at any time with no migration path.
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Some successful collision attacks have been carried out on sha1 with speculation that more are possible.
http://en.wikipedia.org/wiki/Cryptographic_hash_function#Cryptographic_hash_algorithms
No successful attacks have been shown on sha256, which makes it less likely that anybody will be able to engineer an asset hash collision in the future.
Tradeoff is more storage required for hashes, and more cpu to hash, though this is neglible compared to db operations and network access.
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configurable from outside MySQLXAssetData.
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Whether this is worthwhile is debatable since here we are not transmitting data over a network
In addition, jpeg2000 (the biggest data hog) is already a compressed image format.
May not remain.
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This is an extremely crude implemenation which almost works by accident. Nevertheless it does work.
It can be tested with the instructions at http://opensimulator.org/wiki/Feature_Proposals/Deduplicating_Asset_Service#Testing
It does not interact at all with the existing asset service or any data stored there.
This code is subject to change without notice and should not be used for anything other than gawking.
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