Paper/CraftBukkit-Patches/0070-Improve-AutoSave-Mechanism.patch

88 lines
4.0 KiB
Diff

From a67e84acd959b485012eb3a9fe5c757792e0521d Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Sun, 12 Jan 2014 21:07:18 +1100
Subject: [PATCH] Improve AutoSave Mechanism
The problem here is that MinecraftServer.save(..), will attempt to sleep whilst all pending chunks are written to disk.
however due to various and complicated bugs, it will wait for an incorrect amount of chunks, which may cause it to sleep for an overly long amount of time.
Instead we will mimic the save-all command in its behaviour, which is both safe and performant.
Also, only save modified chunks, or chunks with entities after 4 auto save passes
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index f461f50..994903f 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -942,7 +942,7 @@ public class Chunk {
if (this.r && this.world.getTime() != this.lastSaved || this.q) {
return true;
}
- } else if (this.r && this.world.getTime() >= this.lastSaved + 600L) {
+ } else if (this.r && this.world.getTime() >= this.lastSaved + MinecraftServer.getServer().autosavePeriod * 4) { // Spigot - Only save if we've passed 2 auto save intervals without modification
return true;
}
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index af77eef..975d666 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -323,7 +323,7 @@ public class ChunkProviderServer implements IChunkProvider {
this.saveChunk(chunk);
chunk.f(false);
++i;
- if (i == 24 && !flag) {
+ if (i == 24 && !flag && false) { // Spigot
return false;
}
}
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index e552226..a4beaf8 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -653,7 +653,17 @@ public abstract class MinecraftServer implements Runnable, ICommandListener, IAs
SpigotTimings.worldSaveTimer.startTiming(); // Spigot
this.methodProfiler.a("save");
this.v.savePlayers();
- this.saveChunks(true);
+ // Spigot Start
+ // We replace this with saving each individual world as this.saveChunks(...) is broken,
+ // and causes the main thread to sleep for random amounts of time depending on chunk activity
+ // Also pass flag to only save modified chunks
+ server.playerCommandState = true;
+ for (World world : worlds) {
+ world.getWorld().save(false);
+ }
+ server.playerCommandState = false;
+ // this.saveChunks(true);
+ // Spigot End
this.methodProfiler.b();
SpigotTimings.worldSaveTimer.stopTiming(); // Spigot
}
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 20e2416..0629805 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -740,12 +740,17 @@ public class CraftWorld implements World {
}
public void save() {
+ // Spigot start
+ save(true);
+ }
+ public void save(boolean forceSave) {
+ // Spigot end
this.server.checkSaveState();
try {
boolean oldSave = world.savingDisabled;
world.savingDisabled = false;
- world.save(true, null);
+ world.save(forceSave, null); // Spigot
world.savingDisabled = oldSave;
} catch (ExceptionWorldConflict ex) {
--
2.1.4