PaperMC/Spigot-Server-Patches/0140-Auto-Save-Improvements.patch

From 9c20a3d7127f062b7270bafc120ccb55f69e3900 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 19 Sep 2016 23:16:39 -0400
Subject: [PATCH] Auto Save Improvements

Makes Auto Save Rate setting configurable per-world. If the auto save rate is left -1, the global bukkit.yml value will be used.

Process auto save every tick instead of once per auto tick interval, so that chunk saves will distribute over many ticks instead of all at once.

Re-introduce a cap per tick for auto save (Spigot disabled the vanilla cap) and make it configurable.

Adds incremental player auto saving too

diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index 621c585e7..459c86bce 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -251,4 +251,15 @@ public class PaperConfig {
         flyingKickPlayerMessage = getString("messages.kick.flying-player", flyingKickPlayerMessage);
         flyingKickVehicleMessage = getString("messages.kick.flying-vehicle", flyingKickVehicleMessage);
     }
+
+    public static int playerAutoSaveRate = -1;
+    public static int maxPlayerAutoSavePerTick = 10;
+    private static void playerAutoSaveRate() {
+        playerAutoSaveRate = getInt("settings.player-auto-save-rate", -1);
+        maxPlayerAutoSavePerTick = getInt("settings.max-player-auto-save-per-tick", -1);
+        if (maxPlayerAutoSavePerTick == -1) { // -1 Automatic / "Recommended"
+            // 10 should be safe for everyone unless your mass spamming player auto save
+            maxPlayerAutoSavePerTick = (playerAutoSaveRate == -1 || playerAutoSaveRate > 100) ? 10 : 20;
+        }
+    }
 }
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 0e6c18b32..c182ceffb 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -2,6 +2,7 @@ package com.destroystokyo.paper;
 
 import java.util.List;
 
+import net.minecraft.server.MinecraftServer;
 import org.bukkit.configuration.file.YamlConfiguration;
 import org.spigotmc.SpigotWorldConfig;
 
@@ -298,4 +299,19 @@ public class PaperWorldConfig {
     private void skipEntityTickingInChunksScheduledForUnload() {
         skipEntityTickingInChunksScheduledForUnload = getBoolean("skip-entity-ticking-in-chunks-scheduled-for-unload", skipEntityTickingInChunksScheduledForUnload);
     }
+
+    public int autoSavePeriod = -1;
+    private void autoSavePeriod() {
+        autoSavePeriod = getInt("auto-save-interval", -1);
+        if (autoSavePeriod > 0) {
+            log("Auto Save Interval: " +autoSavePeriod + " (" + (autoSavePeriod / 20) + "s)");
+        } else if (autoSavePeriod < 0) {
+            autoSavePeriod = MinecraftServer.getServer().autosavePeriod;
+        }
+    }
+
+    public int maxAutoSaveChunksPerTick = 24;
+    private void maxAutoSaveChunksPerTick() {
+        maxAutoSaveChunksPerTick = getInt("max-auto-save-chunks-per-tick", 24);
+    }
 }
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 6c6924937..5163bd11b 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -1013,11 +1013,9 @@ public class Chunk implements IChunkAccess {
             if (this.w && this.world.getTime() != this.lastSaved || this.y) {
                 return true;
             }
-        } else if (this.w && this.world.getTime() >= this.lastSaved + MinecraftServer.getServer().autosavePeriod * 4) { // Spigot - Only save if we've passed 2 auto save intervals without modification
-            return true;
         }
-
-        return this.y;
+        // This !flag section should say if y(isModified) or w(hasEntities), then check auto save
+        return ((this.y || this.w) && this.world.getTime() >= this.lastSaved + world.paperConfig.autoSavePeriod); // Paper - Make world configurable and incremental
     }
 
     public boolean isEmpty() {
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index 2e72a294d..1e6ea3084 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -1,5 +1,6 @@
 package net.minecraft.server;
 
+import com.destroystokyo.paper.PaperConfig;
 import com.google.common.collect.Lists;
 import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
 import it.unimi.dsi.fastutil.longs.Long2ObjectMaps;
@@ -260,7 +261,7 @@ public class ChunkProviderServer implements IChunkProvider {
                 this.saveChunk(chunk, false); // Spigot
                 chunk.a(false);
                 ++i;
-                if (i == 24 && !flag && false) { // Spigot
+                if (!flag && i >= world.paperConfig.maxAutoSaveChunksPerTick) { // Spigot - // Paper - Incremental Auto Save - cap max per tick
                     return false;
                 }
             }
diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index 5aafa4e23..f5fae7ba8 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -38,6 +38,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
     private static final Logger cc = LogManager.getLogger();
     private static final IChatBaseComponent cd = (new ChatMessage("multiplayer.message_not_delivered", new Object[0])).a(EnumChatFormat.RED);
     public String locale = null; // CraftBukkit - lowercase // Paper - default to null
+    public long lastSave = MinecraftServer.currentTick; // Paper
     public PlayerConnection playerConnection;
     public final MinecraftServer server;
     public final PlayerInteractManager playerInteractManager;
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 49b2c27c6..bf020293d 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -147,6 +147,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
     public java.util.Queue<Runnable> processQueue = new java.util.concurrent.ConcurrentLinkedQueue<Runnable>();
     public int autosavePeriod;
     public File bukkitDataPackFolder;
+    public boolean serverAutoSave = false; // Paper
     // CraftBukkit end
     // Spigot start
     public final SlackActivityAccountant slackActivityAccountant = new SlackActivityAccountant();
@@ -868,22 +869,30 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
             this.n.b().a(agameprofile);
         }
 
-        if (autosavePeriod > 0 && this.ticks % autosavePeriod == 0) { // CraftBukkit
             this.methodProfiler.a("save");
-            this.s.savePlayers();
+
+        serverAutoSave = (autosavePeriod > 0 && this.ticks % autosavePeriod == 0); // Paper
+        int playerSaveInterval = com.destroystokyo.paper.PaperConfig.playerAutoSaveRate;
+        if (playerSaveInterval < 0) {
+            playerSaveInterval = autosavePeriod;
+        }
+        if (playerSaveInterval > 0) { // CraftBukkit // Paper
+            this.s.savePlayers(playerSaveInterval);
             // Spigot Start
+        } // Paper - Incremental Auto Saving
+
             // 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);
+                if (world.paperConfig.autoSavePeriod > 0) world.getWorld().save(false); // Paper - Incremental / Configurable Auto Saving
             }
             server.playerCommandState = false;
             // this.saveChunks(true);
             // Spigot End
             this.methodProfiler.e();
-        }
+        //} // Paper - Incremental Auto Saving
 
         this.methodProfiler.a("snooper");
         if (getSnooperEnabled() && !this.j.d() && this.ticks > 100) { // Spigot
diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index 801a147f0..1f2265231 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -340,6 +340,7 @@ public abstract class PlayerList {
     }
 
     protected void savePlayerFile(EntityPlayer entityplayer) {
+        entityplayer.lastSave = MinecraftServer.currentTick; // Paper
         this.playerFileData.save(entityplayer);
         ServerStatisticManager serverstatisticmanager = (ServerStatisticManager) entityplayer.getStatisticManager(); // CraftBukkit
 
@@ -1219,13 +1220,25 @@ public abstract class PlayerList {
 
     }
 
+    // Paper start
     public void savePlayers() {
+        savePlayers(null);
+    }
+
+    public void savePlayers(Integer interval) {
+        long now = MinecraftServer.currentTick;
         MinecraftTimings.savePlayers.startTiming(); // Paper
+        int numSaved = 0; // Paper
         for (int i = 0; i < this.players.size(); ++i) {
-            this.savePlayerFile((EntityPlayer) this.players.get(i));
+            EntityPlayer entityplayer = this.players.get(i);
+            if (interval == null || now - entityplayer.lastSave >= interval) {
+                this.savePlayerFile(entityplayer);
+                if (interval != null && ++numSaved <= com.destroystokyo.paper.PaperConfig.maxPlayerAutoSavePerTick) { break; } // Paper
+            }
         }
         MinecraftTimings.savePlayers.stopTiming(); // Paper
     }
+    // Paper end
 
     public WhiteList getWhitelist() {
         return this.whitelist;
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index e3d62fc9c..72b3a6d40 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -872,8 +872,9 @@ public class WorldServer extends World implements IAsyncTaskHandler {
         ChunkProviderServer chunkproviderserver = this.getChunkProviderServer();
 
         if (chunkproviderserver.e()) {
-            org.bukkit.Bukkit.getPluginManager().callEvent(new org.bukkit.event.world.WorldSaveEvent(getWorld())); // CraftBukkit
+            if (flag) org.bukkit.Bukkit.getPluginManager().callEvent(new org.bukkit.event.world.WorldSaveEvent(getWorld())); // CraftBukkit // Paper - Incremental Auto Saving - Only fire event on full save
             timings.worldSave.startTiming(); // Paper
+            if (flag || server.serverAutoSave) { // Paper
             if (iprogressupdate != null) {
                 iprogressupdate.a(new ChatMessage("menu.savingLevel", new Object[0]));
             }
@@ -882,6 +883,7 @@ public class WorldServer extends World implements IAsyncTaskHandler {
             if (iprogressupdate != null) {
                 iprogressupdate.c(new ChatMessage("menu.savingChunks", new Object[0]));
             }
+            } // Paper
 
             timings.worldSaveChunks.startTiming(); // Paper
             chunkproviderserver.a(flag);
-- 
2.18.0