From ee9e6ca1ffb8d21f7ba22952c3949e15f3ab3ef3 Mon Sep 17 00:00:00 2001 From: Mike Primm Date: Wed, 16 Jan 2013 15:27:22 -0600 Subject: [PATCH] Sync Free Chunk Reference Cache diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java index b21bff3..f7fa2fe 100644 --- a/src/main/java/net/minecraft/server/World.java +++ b/src/main/java/net/minecraft/server/World.java @@ -290,20 +290,18 @@ public abstract class World implements IBlockAccess { return this.getChunkAt(i >> 4, j >> 4); } + // Spigot start public Chunk getChunkAt(int i, int j) { - // CraftBukkit start - Chunk result = null; - synchronized (this.chunkLock) { - if (this.lastChunkAccessed == null || this.lastXAccessed != i || this.lastZAccessed != j) { - this.lastChunkAccessed = this.chunkProvider.getOrCreateChunk(i, j); - this.lastXAccessed = i; - this.lastZAccessed = j; - } - result = this.lastChunkAccessed; + //synchronized (this.chunkLock) { + Chunk result = this.lastChunkAccessed; // Exploit fact that read is atomic + if (result == null || result.locX != i || result.locZ != j) { + result = this.chunkProvider.getOrCreateChunk(i, j); + this.lastChunkAccessed = result; // Exploit fact that write is atomic } + //} return result; - // CraftBukkit end } + // Spigot end public boolean setTypeAndData(int i, int j, int k, Block block, int l, int i1) { if (i >= -30000000 && k >= -30000000 && i < 30000000 && k < 30000000) { -- 1.8.3.2