Plans for FFM and JDK25/21 LTS

[manticore-projects]

Greetings.

Current JDK LTS are 21 and 25, with JDK 25 bitterly complaining about UnsafeUtils. Are there any plans to migrate lz4-java to an FFM based implementation? I would be ready and able to volunteer on that, but we need to agree on the strategy please.

See my PNG Encoder Wrapper https://github.com/manticore-projects/fpng-java, especially the ZPNG23 sub module for reference.

[yawkat]

I'm open to a MemorySegment-based implementation of the decoders, but I doubt it will actually be faster than the pure java implementation… And users ideally use the JNI implementation anyway, not the Unsafe implementation.

ffm could make sense to replace the JNI calls, I'm not super familiar with it. I'm also not sure if the performance difference would be worth it.