OpenSource/PaperMC
OpenSource/PaperMC
1
0
Fork 0
mirror of https://github.com/PaperMC/Paper.git synced 2024-12-29 15:49:00 +01:00
Code Issues Projects Releases Packages Wiki Activity

Prevent Unbounded IntCache Growth

Browse source 
Based on work by Peter Lawrey, this commit prevents unbounded growth of the integer cache and instead caps it to a value specified in the configuration (1024 by default). Should prevent thrashing, especially around world generation.

By: md_5 <git@md-5.net>
This commit is contained in:
Spigot 2014-06-20 19:40:55 +10:00
parent 144b5d87ad
commit 9bb3f58321
2 changed files with 132 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

71
CraftBukkit-Patches/0002-mc-dev-imports.patch
View file

@ -1,4 +1,4 @@
From c622cf3a0fddf3113bcf8bf27d99339fff13e400 Mon Sep 17 00:00:00 2001
From 8f6a95b59cc9531a91f2396aca273d5eb6c218bc Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Sun, 1 Dec 2013 15:10:48 +1100
Subject: [PATCH] mc-dev imports
@ -1328,6 +1328,75 @@ index 0000000..33cfdb2
+ }
+ }
+}
diff --git a/src/main/java/net/minecraft/server/IntCache.java b/src/main/java/net/minecraft/server/IntCache.java
new file mode 100644
index 0000000..9858720
--- /dev/null
+++ b/src/main/java/net/minecraft/server/IntCache.java
@@ -0,0 +1,63 @@
+package net.minecraft.server;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class IntCache {
+
+ private static int a = 256;
+ private static List b = new ArrayList();
+ private static List c = new ArrayList();
+ private static List d = new ArrayList();
+ private static List e = new ArrayList();
+
+ public static synchronized int[] a(int i) {
+ int[] aint;
+
+ if (i <= 256) {
+ if (b.isEmpty()) {
+ aint = new int[256];
+ c.add(aint);
+ return aint;
+ } else {
+ aint = (int[]) b.remove(b.size() - 1);
+ c.add(aint);
+ return aint;
+ }
+ } else if (i > a) {
+ a = i;
+ d.clear();
+ e.clear();
+ aint = new int[a];
+ e.add(aint);
+ return aint;
+ } else if (d.isEmpty()) {
+ aint = new int[a];
+ e.add(aint);
+ return aint;
+ } else {
+ aint = (int[]) d.remove(d.size() - 1);
+ e.add(aint);
+ return aint;
+ }
+ }
+
+ public static synchronized void a() {
+ if (!d.isEmpty()) {
+ d.remove(d.size() - 1);
+ }
+
+ if (!b.isEmpty()) {
+ b.remove(b.size() - 1);
+ }
+
+ d.addAll(e);
+ b.addAll(c);
+ e.clear();
+ c.clear();
+ }
+
+ public static synchronized String b() {
+ return "cache: " + d.size() + ", tcache: " + b.size() + ", allocated: " + e.size() + ", tallocated: " + c.size();
+ }
+}
diff --git a/src/main/java/net/minecraft/server/ItemSkull.java b/src/main/java/net/minecraft/server/ItemSkull.java
new file mode 100644
index 0000000..f20c69e

62
CraftBukkit-Patches/0148-Prevent-Unbounded-IntCache-Growth.patch Normal file
View file

@ -0,0 +1,62 @@
From bcb5d85cb761fa898b684ad953bf253632d7d4be Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Fri, 20 Jun 2014 19:40:00 +1000
Subject: [PATCH] Prevent Unbounded IntCache Growth
Based on work by Peter Lawrey, this commit prevents unbounded growth of the integer cache and instead caps it to a value specified in the configuration (1024 by default). Should prevent thrashing, especially around world generation.
diff --git a/src/main/java/net/minecraft/server/IntCache.java b/src/main/java/net/minecraft/server/IntCache.java
index 9858720..47e06df 100644
--- a/src/main/java/net/minecraft/server/IntCache.java
+++ b/src/main/java/net/minecraft/server/IntCache.java
@@ -17,11 +17,11 @@ public class IntCache {
if (i <= 256) {
if (b.isEmpty()) {
aint = new int[256];
- c.add(aint);
+ if (c.size() < org.spigotmc.SpigotConfig.intCacheLimit) c.add(aint);
return aint;
} else {
aint = (int[]) b.remove(b.size() - 1);
- c.add(aint);
+ if (c.size() < org.spigotmc.SpigotConfig.intCacheLimit) c.add(aint);
return aint;
}
} else if (i > a) {
@@ -29,15 +29,15 @@ public class IntCache {
d.clear();
e.clear();
aint = new int[a];
- e.add(aint);
+ if (e.size() < org.spigotmc.SpigotConfig.intCacheLimit) e.add(aint);
return aint;
} else if (d.isEmpty()) {
aint = new int[a];
- e.add(aint);
+ if (e.size() < org.spigotmc.SpigotConfig.intCacheLimit) e.add(aint);
return aint;
} else {
aint = (int[]) d.remove(d.size() - 1);
- e.add(aint);
+ if (e.size() < org.spigotmc.SpigotConfig.intCacheLimit) e.add(aint);
return aint;
}
}
diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
index b00f635..5818cab 100644
--- a/src/main/java/org/spigotmc/SpigotConfig.java
+++ b/src/main/java/org/spigotmc/SpigotConfig.java
@@ -310,4 +310,10 @@ public class SpigotConfig
{
saveUserCacheOnStopOnly = getBoolean( "settings.save-user-cache-on-stop-only", false );
}
+
+ public static int intCacheLimit;
+ private static void intCacheLimit()
+ {
+ intCacheLimit = getInt( "settings.int-cache-limit", 1024 );
+ }
}
--
1.9.1