fix: allow cancellation on unloading stage 3

patches/main/0010-fix-allow-cancellation-on-unloading-stage-3.patch

@@ -0,0 +1,39 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: ishland <[email protected]>
+Date: Wed, 25 Dec 2024 22:56:35 +0800
+Subject: [PATCH] fix: allow cancellation on unloading stage 3
+
+
+diff --git a/c2me-rewrites-chunk-system/src/main/java/com/ishland/c2me/rewrites/chunksystem/common/statuses/ReadFromDiskAsync.java b/c2me-rewrites-chunk-system/src/main/java/com/ishland/c2me/rewrites/chunksystem/common/statuses/ReadFromDiskAsync.java
+index 47229eb6..851dab8d 100644
+--- a/c2me-rewrites-chunk-system/src/main/java/com/ishland/c2me/rewrites/chunksystem/common/statuses/ReadFromDiskAsync.java
++++ b/c2me-rewrites-chunk-system/src/main/java/com/ishland/c2me/rewrites/chunksystem/common/statuses/ReadFromDiskAsync.java
+@@ -159,10 +159,6 @@ public class ReadFromDiskAsync extends ReadFromDisk {
+                             worldChunk.setLoadedToWorld(false);
+                         }
+
+-                        if (loadedToWorld.get() && chunk instanceof WorldChunk worldChunk) {
+-                            LifecycleEventInvoker.invokeChunkUnload(((IThreadedAnvilChunkStorage) context.tacs()).getWorld(), worldChunk);
+-                        }
+-
+                         if ((context.holder().getFlags() & ItemHolder.FLAG_BROKEN) != 0 && chunk instanceof ProtoChunk) { // do not save broken ProtoChunks
+                             LOGGER.warn("Not saving partially generated broken chunk {}", context.holder().getKey());
+                             return CompletableFuture.completedStage((Void) null);
+@@ -180,7 +176,17 @@ public class ReadFromDiskAsync extends ReadFromDisk {
+                     try (var ignored = ThreadInstrumentation.getCurrent().begin(new ChunkTaskWork(context, this, false))) {
+                         Chunk chunk = context.holder().getItem().get().chunk();
+                         if (chunk instanceof WrapperProtoChunk protoChunk) chunk = protoChunk.getWrappedChunk();
++
++                        if (context.holder().getTargetStatus().ordinal() >= this.ordinal()) { // saving cancelled late
++                            if (chunk instanceof WorldChunk worldChunk) {
++                                worldChunk.setLoadedToWorld(loadedToWorld.get());
++                            }
++                            cancellable.cancel();
++                            throw new CancellationException();
++                        }
++
+                         if (loadedToWorld.get() && chunk instanceof WorldChunk worldChunk) {
++                            LifecycleEventInvoker.invokeChunkUnload(((IThreadedAnvilChunkStorage) context.tacs()).getWorld(), worldChunk);
+                             ((IThreadedAnvilChunkStorage) context.tacs()).getWorld().unloadEntities(worldChunk);
+                         }
+