Upstream/Paper
1
0
Fork 0
mirror of https://github.com/PaperMC/Paper.git synced 2025-02-07 08:02:13 +01:00
Code Issues Projects Releases Wiki Activity

Fix performance regression in loadChunk(x, z, false) (#2211)

Browse Source 
Resolve a regression where calling loadChunk(x, z, false) would
potentially double-load chunk data
This commit is contained in:
Spottedleaf 2019-06-22 13:04:26 -07:00
parent a29a43a4ab
commit 83d1978402
1 changed files with 39 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
Spigot-Server-Patches/Fix-World-isChunkGenerated-calls.patch
View File

@ -232,9 +232,22 @@ index 2e14d84657..d610253b95 100644
} }
diff --git a/src/main/java/net/minecraft/server/RegionFileCache.java b/src/main/java/net/minecraft/server/RegionFileCache.java diff --git a/src/main/java/net/minecraft/server/RegionFileCache.java b/src/main/java/net/minecraft/server/RegionFileCache.java
index 6f34d8aea0..d1323891fa 100644 index 6f34d8aea0..d2b3289450 100644
--- a/src/main/java/net/minecraft/server/RegionFileCache.java --- a/src/main/java/net/minecraft/server/RegionFileCache.java
+++ b/src/main/java/net/minecraft/server/RegionFileCache.java +++ b/src/main/java/net/minecraft/server/RegionFileCache.java
@@ -0,0 +0,0 @@ public abstract class RegionFileCache implements AutoCloseable {
// Paper start
}
+ // Paper start
+ public RegionFile getRegionFileIfLoaded(ChunkCoordIntPair chunkcoordintpair) {
+ return this.cache.getAndMoveToFirst(ChunkCoordIntPair.pair(chunkcoordintpair.getRegionX(), chunkcoordintpair.getRegionZ()));
+ }
+ // Paper end
+
public RegionFile getRegionFile(ChunkCoordIntPair chunkcoordintpair, boolean existingOnly) throws IOException { return this.a(chunkcoordintpair, existingOnly); } // Paper - OBFHELPER
private RegionFile a(ChunkCoordIntPair chunkcoordintpair, boolean existingOnly) throws IOException { // CraftBukkit
long i = ChunkCoordIntPair.pair(chunkcoordintpair.getRegionX(), chunkcoordintpair.getRegionZ());
@@ -0,0 +0,0 @@ public abstract class RegionFileCache implements AutoCloseable { @@ -0,0 +0,0 @@ public abstract class RegionFileCache implements AutoCloseable {
try { try {
NBTCompressedStreamTools.writeNBT(nbttagcompound, out); NBTCompressedStreamTools.writeNBT(nbttagcompound, out);
@ -252,7 +265,7 @@ index 6f34d8aea0..d1323891fa 100644
printOversizedLog("ChunkTooLarge even after reduction. Trying in overzealous mode.", regionfile.file, chunkX, chunkZ); printOversizedLog("ChunkTooLarge even after reduction. Trying in overzealous mode.", regionfile.file, chunkX, chunkZ);
// Eek, major fail. We have retry logic, so reduce threshholds and fall back // Eek, major fail. We have retry logic, so reduce threshholds and fall back
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index e0d89cc533..53d4f46d45 100644 index e0d89cc533..9bb1ad077a 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java --- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java +++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -0,0 +0,0 @@ public class CraftWorld implements World { @@ -0,0 +0,0 @@ public class CraftWorld implements World {
@ -288,13 +301,22 @@ index e0d89cc533..53d4f46d45 100644
- // We then cycle through again to get the full chunk immediately, rather than after the ticket addition - // We then cycle through again to get the full chunk immediately, rather than after the ticket addition
- chunk = world.getChunkProvider().getChunkAt(x, z, ChunkStatus.FULL, true); - chunk = world.getChunkProvider().getChunkAt(x, z, ChunkStatus.FULL, true);
- } - }
- + // Paper - Optimize this method
+ if (!generate) {
+ net.minecraft.server.RegionFile file = world.getChunkProvider().playerChunkMap.getRegionFileIfLoaded(new ChunkCoordIntPair(x, z));
+ if (file != null && file.getStatusIfCached(x, z) != ChunkStatus.FULL) {
+ return false;
+ }
- if (chunk instanceof net.minecraft.server.Chunk) { - if (chunk instanceof net.minecraft.server.Chunk) {
- world.getChunkProvider().addTicket(TicketType.PLUGIN, new ChunkCoordIntPair(x, z), 1, Unit.INSTANCE); - world.getChunkProvider().addTicket(TicketType.PLUGIN, new ChunkCoordIntPair(x, z), 1, Unit.INSTANCE);
- return true; - return true;
+ // Paper - Optimize this method + IChunkAccess chunk = world.getChunkProvider().getChunkAt(x, z, ChunkStatus.EMPTY, true);
+ if (!generate && !isChunkGenerated(x, z)) { + if (!(chunk instanceof ProtoChunkExtension) && !(chunk instanceof net.minecraft.server.Chunk)) {
+ return false; + return false;
+ }
+ // fall through to load
+ // we do this so we do not re-read the chunk data on disk
} }
- -
- return false; - return false;
@ -322,8 +344,17 @@ index e0d89cc533..53d4f46d45 100644
- if (chunk instanceof net.minecraft.server.Chunk) { - if (chunk instanceof net.minecraft.server.Chunk) {
- return ((net.minecraft.server.Chunk)chunk).bukkitChunk; - return ((net.minecraft.server.Chunk)chunk).bukkitChunk;
+ // Note: Copied from loadChunk() + // Note: Copied from loadChunk()
+ if (!gen && !isChunkGenerated(x, z)) { + if (!gen) {
+ return null; + net.minecraft.server.RegionFile file = world.getChunkProvider().playerChunkMap.getRegionFileIfLoaded(new ChunkCoordIntPair(x, z));
+ if (file != null && file.getStatusIfCached(x, z) != ChunkStatus.FULL) {
+ return null;
+ }
+ IChunkAccess chunk = world.getChunkProvider().getChunkAt(x, z, ChunkStatus.EMPTY, true);
+ if (!(chunk instanceof ProtoChunkExtension) && !(chunk instanceof net.minecraft.server.Chunk)) {
+ return null;
+ }
+ // fall through to load
+ // we do this so we do not re-read the chunk data on disk
} }
- -
- return null; - return null;