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• v0.4.2+26.1.2 4b8701495a

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  v0.4.2+26.1.2 Stable

  admin_ekaii released this 2026-07-02 00:41:32 +00:00 | 12 commits to main since this release

  Fixed: PasteOperation semaphore deadlock (Folia region self-deadlock)

  Completes the v0.4.1 fix, which only hopped the pass-1 dispatch loop off the region tick thread.

  Root cause. The pass-2 loop (pass1All.thenCompose(...)) and the deferred-physics sweep loop (pass2All.thenCompose(...)) used a plain (non-async) thenCompose. That runs its body on the thread that completed the upstream future; completed by done.complete(null) inside FoliaCompat.runOnRegion, i.e. a Folia region tick thread. Those loops then called the blocking acquireSlot() on that region thread. When the same region still had more pending chunk tasks than free CHUNK_THROTTLE permits, the region parked in Semaphore.acquire() waiting for permits only it could release → self-deadlock. Watchdog logged Tick region … has not responded indefinitely without crashing; cumulative across Overworld + Nether. On creaclone a region was stuck ~116 h before a manual restart (issue #1); stacks at PasteOperation.java:293 (pass 2) and :345 (sweep).

  Fix.

  1. Both continuation loops now run via thenComposeAsync(..., offRegionExecutor) (Folia async pool / Paper async worker) → every acquireSlot() runs off-region; a blocked dispatch thread can no longer park a region.
  2. acquireSlot() now uses tryAcquire(60 s) and reports whether a permit was taken; a timeout dispatches the chunk unthrottled + logs instead of blocking forever. The releasedOnce guard is seeded so an untaken permit is never over-released.

  No config/schema change vs 0.4.1; in-place drop-in. Normal-load behaviour (32 in-flight chunk-task throttle) unchanged.

  Fixes #1.

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  • LitematicaFolia-0.4.2 26.1.2-all.jar
    1 download · 2026-07-02 00:41:41 +00:00 · 3.1 MiB