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Add missing null check for structure start chunk access 

Spigot made structure start not load chunks, but forgot to null check
the result...

This likely never blew up before due to the chunk leak issue, but now
that leaky chunks are cleaned up, it was identified.
This commit is contained in:
Aikar 2020-05-25 14:19:11 -04:00
parent b12177fb04
commit 7ee711460f
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GPG Key ID: 401ADFC9891FAAFE
1 changed files with 23 additions and 2 deletions
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25
Spigot-Server-Patches/0532-Unload-leaked-Cached-Chunks.patch
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@ -18,10 +18,18 @@ We will now detect these chunks in that iteration, and automatically
add it to the unload queue when the chunk is found without any tickets.
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index 54e89c9cc6c47ff2c4f4dd5d4c22a391f8a3d6e0..5254e436ce42dd2ab5e0aac5168a9f1f92c9da26 100644
index 54e89c9cc6c47ff2c4f4dd5d4c22a391f8a3d6e0..59f19c38b06dd3370f9e1604af59535934715abc 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -898,6 +898,33 @@ public class ChunkProviderServer extends IChunkProvider {
@@ -560,6 +560,7 @@ public class ChunkProviderServer extends IChunkProvider {
}
}
// Paper start
+ if (playerchunk != null) playerchunk.lastActivity = world.getTime(); // Paper
CompletableFuture<Either<IChunkAccess, PlayerChunk.Failure>> future = this.a(playerchunk, l) ? PlayerChunk.UNLOADED_CHUNK_ACCESS_FUTURE : playerchunk.a(chunkstatus, this.playerChunkMap);
if (isUrgent) {
future.thenAccept(either -> this.chunkMapDistance.clearUrgent(chunkcoordintpair));
@@ -898,6 +899,33 @@ public class ChunkProviderServer extends IChunkProvider {
if (chunksTicked[0]++ % 10 == 0) this.world.getMinecraftServer().midTickLoadChunks(); // Paper
}
}
@ -104,3 +112,16 @@ index 2b09437642ec846d025b226692f2290f9bb5b556..b7d8a7487e303c2c44160ec1093987b3
PlayerChunk playerchunk = (PlayerChunk) this.updatingChunks.remove(j);
if (playerchunk != null) {
diff --git a/src/main/java/net/minecraft/server/StructureGenerator.java b/src/main/java/net/minecraft/server/StructureGenerator.java
index acfe732af5b9f63fc2f6b78499defabe2e73ee45..25b19346fc1c702cc37275d0ec16abbbfacfb418 100644
--- a/src/main/java/net/minecraft/server/StructureGenerator.java
+++ b/src/main/java/net/minecraft/server/StructureGenerator.java
@@ -160,7 +160,7 @@ public abstract class StructureGenerator<C extends WorldGenFeatureConfiguration>
while (longiterator.hasNext()) {
long k = longiterator.nextLong();
IChunkAccess ichunkaccess1 = generatoraccess.getChunkAt(ChunkCoordIntPair.getX(k), ChunkCoordIntPair.getZ(k), ChunkStatus.STRUCTURE_STARTS, false); // CraftBukkit - don't load chunks
- StructureStart structurestart = ichunkaccess1.a(this.b());
+ StructureStart structurestart = ichunkaccess1 != null ? ichunkaccess1.a(this.b()) : null; // Paper - make sure not null
if (structurestart != null) {
list.add(structurestart);