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[1.10.2] WorldSavedData and concurrency

Posted December 20, 20168 yr

I have been getting sporadic concurrency exceptions from the chunk IO thread and I suspect it may be related to how I interact with my global WorldSavedData. Currently I do not have concurrency guards in place. I looked at the mcforge docs and I did not see anything on this particular topic. So my question is do I need to synchronize access to my WorldSavedData?

EDIT: Additional info - I do have various lists inside the WorldSavedData object.

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December 20, 20168 yr

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Link to the file in my Github repository.

My main concern is that I have a Set<> burried in DimensionEffectData. It is possible that the Set<> would be modified in the main server thread while the IO thread is serializing - assuming serialization takes place in the IO thread.

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December 20, 20168 yr

Author

This particular set of classes had a colorful past. They started off reading/writing Json but morphed into what you currently see.

* Is it that markDirty is generally pointless?

* I was planning on making it per dimension as you indicate - would simplify things.

Thanks for the suggestions.

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December 20, 20168 yr

Author

That's what I thought. Because of how the class was implemented it was the only place that I could guarantee it would be flagged. My new sandbox implementation does it differently.

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[1.10.2] WorldSavedData and concurrency

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