PaperMC/Spigot-Server-Patches/Sanitise-RegionFileCache-and-make-configurable.patch
Automated 6249addbaa [Auto] Update Upstream
Upstream has released updates that appear to apply compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing.

Bukkit Changes:
d2834556 SPIGOT-4219: Event for PigZombies angering.

CraftBukkit Changes:
a9c796f1 SPIGOT-4184: Fix furnaces not matching Vanilla smelt or animations
195f071e SPIGOT-4219: Event for PigZombies angering.
5e3082c7 SPIGOT-4230: Improve legacy block types
2018-08-05 19:46:43 -04:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Antony Riley <antony@cyberiantiger.org>
Date: Tue, 29 Mar 2016 08:22:55 +0300
Subject: [PATCH] Sanitise RegionFileCache and make configurable.
RegionFileCache prior to this patch would close every single open region
file upon reaching a size of 256.
This patch modifies that behaviour so it closes the the least recently
used RegionFile.
The implementation uses a LinkedHashMap as an LRU cache (modified from HashMap).
The maximum size of the RegionFileCache is also made configurable.
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index 620f23f4f0..a6042ca607 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -0,0 +0,0 @@ public class PaperConfig {
private static void loadPermsBeforePlugins() {
loadPermsBeforePlugins = getBoolean("settings.load-permissions-yml-before-plugins", true);
}
+
+ public static int regionFileCacheSize = 256;
+ private static void regionFileCacheSize() {
+ regionFileCacheSize = getInt("settings.region-file-cache-size", 256);
+ }
}
diff --git a/src/main/java/net/minecraft/server/RegionFileCache.java b/src/main/java/net/minecraft/server/RegionFileCache.java
index ff473a263f..3b8d01ea1a 100644
--- a/src/main/java/net/minecraft/server/RegionFileCache.java
+++ b/src/main/java/net/minecraft/server/RegionFileCache.java
@@ -0,0 +0,0 @@ import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import javax.annotation.Nullable;
+import com.destroystokyo.paper.PaperConfig; // Paper
+import java.util.LinkedHashMap; // Paper
public class RegionFileCache {
- public static final Map<File, RegionFile> a = Maps.newHashMap(); // Spigot - private -> public
+ public static final Map<File, RegionFile> a = new LinkedHashMap(PaperConfig.regionFileCacheSize, 0.75f, true); // Spigot - private -> public, Paper - HashMap -> LinkedHashMap
public static synchronized RegionFile a(File file, int i, int j) {
File file1 = new File(file, "region");
@@ -0,0 +0,0 @@ public class RegionFileCache {
file1.mkdirs();
}
- if (RegionFileCache.a.size() >= 256) {
- a();
+ if (RegionFileCache.a.size() >= PaperConfig.regionFileCacheSize) { // Paper
+ trimCache(); // Paper
}
RegionFile regionfile1 = new RegionFile(file2);
@@ -0,0 +0,0 @@ public class RegionFileCache {
}
}
+ // Paper Start
+ private static synchronized void trimCache() {
+ Iterator<Map.Entry<File, RegionFile>> itr = RegionFileCache.a.entrySet().iterator();
+ int count = RegionFileCache.a.size() - PaperConfig.regionFileCacheSize;
+ while (count-- >= 0 && itr.hasNext()) {
+ try {
+ itr.next().getValue().c();
+ } catch (IOException ioexception) {
+ ioexception.printStackTrace();
+ ServerInternalException.reportInternalException(ioexception);
+ }
+ itr.remove();
+ }
+ }
+ // Paper End
+
public static synchronized void a() {
Iterator iterator = RegionFileCache.a.values().iterator();
--