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