**Add a null-check to CharBlocks FULL section layer-retrieval.**
- It is possible to trim CharBlocks whilst it is attempting to read data due to the batching of chunks to help reduce memory
- This is done when the number of chunks sitting loaded in memory with having been "submitted" to the queue for writing to disk becomes high
- Seconday operations such as heightmap processing and lighting will quickly load chunks, meaning many chunks are submitted early
- This leads to much higher chances of the chunk being submitted and subsequently trimmed given heightmap and light processing is done layer-by-layer over many chunks, rather than chunk-by-chunk - thus leading to NPEs.
- By adding synchronisation to and around only the specific sections when loading/updating, and not blocking the whole chunk, many access can still be thread-safe without causing deadlocks
- This allows removal of lots of the needless and very-slowing synchronisation on get**Block** methods
**Remove much of the synchronisation from ChunkHolder**
- We shouldn't be synchronising with call() and safety should be added elsewhere. (plus it's making edits very very slow when queue target size is hit)
- Also remove much of synchronisation because we've added the null-check and section-specific synchronisation to CharBlocks
**Some QOL/thread-safe data access changes**
- Replaces the Array#clone seen in the get blocks classes with System#arraycopy as deep cloning is not required, and is also slower than arraycopy
- Add System#arraycopy when accessing chunk section data via history to ensure it is not altered whilst being written
- Renaming EMPTY to empty means it is not implied to be a static variable
Fixes https://github.com/IntellectualSites/FastAsyncWorldEdit/issues/1028
Fixes https://github.com/IntellectualSites/FastAsyncWorldEdit/issues/1025
Fixes https://github.com/IntellectualSites/FastAsyncWorldEdit/issues/1089
Fixes https://github.com/IntellectualSites/FastAsyncWorldEdit/issues/1091
Fixes https://github.com/IntellectualSites/FastAsyncWorldEdit/issues/1097
* Use Unsafe to replace Lock
* Start cleaning up everything that has to do with CleanableThreadLocal
* Make cancellation work
Co-authored-by: NotMyFault <mc.cache@web.de>
* Relight using starlight engine on Tuinity
* Make use of invokeExact
* Cache MethodHandle
* Address some requested changes
* Remove random *
Co-authored-by: NotMyFault <mc.cache@web.de>
* Simplify and clean up sendChunk
Hopefully, that doesn't cause any issues
* Add naive HeightmapProcessor
* Make HeightmapProcessor more efficient
* Remove heightmap code from NMSRelighter
* Recognize fluid for waterlogged blocks
* Remove config option for heightmaps as they should always be updated
* Batch relighting for Starlight
* Dirty workaround for CharBlocks blocks NPE
* Revert "Dirty workaround for CharBlocks blocks NPE"
This reverts commit 737606a7
It only caused the heightmap to be wrong again and didn't help much with the original issue
* Adapt better chunk sending on older versions
* Adapt requested changes for HeightMapType
* Relight all changed chunks, batched
Also, address some requested changes
* Avoid deadlocks
* Clean up tuinity relighter and add some comments
* Minor changes to HeightmapProcessor
Co-authored-by: BuildTools <unconfigured@null.spigotmc.org>
Co-authored-by: NotMyFault <mc.cache@web.de>
Co-authored-by: Aurora <21148213+aurorasmiles@users.noreply.github.com>
