35 lines
1.4 KiB
Diff
35 lines
1.4 KiB
Diff
From f9fe180eef563c01afa127cd687b41bb1ba5c0af 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] Alternate, sync-free-but-safe 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 92e8a37..b4ec71e 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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@@ -294,15 +294,13 @@ public abstract class World implements IBlockAccess {
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// CraftBukkit start
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public Chunk getChunkAt(int i, int j) {
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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.x != i || result.z != 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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}
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// CraftBukkit end
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--
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1.8.2.1
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