Processes about amulet-editor HOT 6 CLOSED

One thing I would like to note is that there are potential benefits to isolating plugins between world instances. For instance, if you have a project that uses plugins X and Y but is incompatible with Z and another world which uses plugin Z, then the process isolation actually works out quite nicely.

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That is a good point. I haven't really thought about how to manage non-global plugins.

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I would agree in that the lack of shared memory could be troublesome to work with when trying to copy a selection between worlds, but in order to solve that problem, I think it could be reasonable to just export the selection as a schematic in a global clipboard folder.

Perhaps we wouldn't want to apply that logic to all copy operations since I'd imagine it's non-trivially slower than just keeping the selection in RAM, but I feel like this is the only major disadvantage of the one world per instance method and it feels like there should be a reasonable solution.

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I like the one process per world approach, while the separate memory disadvantage is a big factor we can at least kinda workaround that while the GIL is out of our reach and a more complex system for world based variables might be tricky to implement depending on how we approach it. I also agree with Jevex that there are some good benefits from isolating plugins into each world instance, we could probably add in a system down the line to help plugins transfer data between world instances if needed.

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I would need to experiment to find the optimal solution. We either:

1. Save all copied regions to a temporary directory on disk where any process can read them. This could be slower for users with slow HDDs.
2. Save all copied regions in RAM and use IPC to send the data between processes as required.
3. Save all copied regions in RAM and push to disk only when another process requires it.

2 is probably the best solution and would allow us to stream data on a chunk basis rather than having to serialise the whole area which may be very large.

I haven't really done IPC before but I can look into it.

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I think the scope of this question has been answered. I will open new tickets for future questions.

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