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papermc/Spigot-Server-Patches/0031-Lighting-Queue.patch
Aikar 38df6e505c Paper 1.9.2 Update
2016-03-30 20:50:23 -04:00

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From 0c7102107d53530cbc3158beae7f75f00b4daca3 Mon Sep 17 00:00:00 2001
From: Byteflux <byte@byteflux.net>
Date: Wed, 2 Mar 2016 00:52:31 -0600
Subject: [PATCH] Lighting Queue
diff --git a/src/main/java/co/aikar/timings/SpigotTimings.java b/src/main/java/co/aikar/timings/SpigotTimings.java
index 3f4271c..5fdf051 100644
--- a/src/main/java/co/aikar/timings/SpigotTimings.java
+++ b/src/main/java/co/aikar/timings/SpigotTimings.java
@@ -17,6 +17,7 @@ public final class SpigotTimings {
public static final Timing timeUpdateTimer = Timings.ofSafe("Time Update");
public static final Timing serverCommandTimer = Timings.ofSafe("Server Command");
public static final Timing worldSaveTimer = Timings.ofSafe("World Save");
+ public static final Timing lightingQueueTimer = Timings.ofSafe("Lighting Queue");
public static final Timing tickEntityTimer = Timings.ofSafe("## tickEntity");
public static final Timing tickTileEntityTimer = Timings.ofSafe("## tickTileEntity");
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 7c0e61f..e0e9a65 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -155,4 +155,20 @@ public class PaperWorldConfig {
netherVoidTopDamage = getBoolean( "nether-ceiling-void-damage", false );
log("Top of the nether void damage: " + netherVoidTopDamage);
}
+
+ public int tickNextTickCap;
+ public boolean tickNextTickListCapIgnoresRedstone;
+ private void tickNextTickCap() {
+ tickNextTickCap = getInt("tick-next-tick-list-cap", 1000); // Higher values will be friendlier to vanilla style mechanics (to a point) but may hurt performance
+ tickNextTickListCapIgnoresRedstone = getBoolean("tick-next-tick-list-cap-ignores-redstone", false); // Redstone TickNextTicks will always bypass the preceding cap
+ log("WorldServer TickNextTick cap set at " + tickNextTickCap);
+ log("WorldServer TickNextTickList cap always processes redstone: " + tickNextTickListCapIgnoresRedstone);
+
+ }
+
+ public boolean queueLightUpdates;
+ private void queueLightUpdates() {
+ queueLightUpdates = getBoolean("queue-light-updates", false);
+ log("Lighting Queue enabled: " + queueLightUpdates);
+ }
}
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index cde4124..3b5e8c2 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -44,6 +44,7 @@ public class Chunk {
private int w;
private ConcurrentLinkedQueue<BlockPosition> x;
protected gnu.trove.map.hash.TObjectIntHashMap<Class> entityCount = new gnu.trove.map.hash.TObjectIntHashMap<Class>(); // Spigot
+ public int lightUpdates; // Paper - Number of queued light updates for this chunk
// CraftBukkit start - Neighbor loaded cache for chunk lighting and entity ticking
private int neighbors = 0x1 << 12;
@@ -226,6 +227,22 @@ public class Chunk {
private void h(boolean flag) {
this.world.methodProfiler.a("recheckGaps");
if (this.world.areChunksLoaded(new BlockPosition(this.locX * 16 + 8, 0, this.locZ * 16 + 8), 16)) {
+ // Paper start - Queue light update
+ if (!world.paperConfig.queueLightUpdates) {
+ recheckGaps(flag);
+ } else {
+ ++lightUpdates;
+ world.getServer().getServer().lightingQueue.add(() -> {
+ recheckGaps(flag);
+ --lightUpdates;
+ });
+ }
+ }
+ }
+
+ private void recheckGaps(boolean flag) {
+ if (true) {
+ // Paper end
for (int i = 0; i < 16; ++i) {
for (int j = 0; j < 16; ++j) {
if (this.h[i + j * 16]) {
@@ -476,7 +493,7 @@ public class Chunk {
} else {
if (flag) {
this.initLighting();
- } else {
+ } else if (!world.paperConfig.queueLightUpdates) { // Paper
int j1 = iblockdata.c();
int k1 = iblockdata1.c();
@@ -491,6 +508,28 @@ public class Chunk {
if (j1 != k1 && (j1 < k1 || this.getBrightness(EnumSkyBlock.SKY, blockposition) > 0 || this.getBrightness(EnumSkyBlock.BLOCK, blockposition) > 0)) {
this.d(i, k);
}
+ // Paper start - Queue light update
+ } else {
+ int j1 = iblockdata.c();
+ int k1 = iblockdata1.c();
+
+ ++lightUpdates;
+ world.getServer().getServer().lightingQueue.add(() -> {
+ if (j1 > 0) {
+ if (j >= i1) {
+ this.c(i, j + 1, k);
+ }
+ } else if (j == i1 - 1) {
+ this.c(i, j, k);
+ }
+
+ if (j1 != k1 && (j1 < k1 || this.getBrightness(EnumSkyBlock.SKY, blockposition) > 0 || this.getBrightness(EnumSkyBlock.BLOCK, blockposition) > 0)) {
+ this.d(i, k);
+ }
+
+ --lightUpdates;
+ });
+ // Paper end
}
TileEntity tileentity;
@@ -1314,4 +1353,29 @@ public class Chunk {
private EnumTileEntityState() {}
}
+
+ // Paper start
+ public boolean hasLightUpdates() {
+ if (world.paperConfig.queueLightUpdates) {
+ if (lightUpdates > 0) {
+ return true;
+ }
+
+ for (int x = locX - 2; x <= locX + 2; ++x) {
+ for (int z = locZ - 2; z <= locZ + 2; ++z) {
+ if ((x == 0 && z == 0) || (x == locX && z == locZ)) {
+ continue;
+ }
+
+ Chunk chunk = world.getChunkIfLoaded(x, z);
+ if (chunk != null && chunk.lightUpdates > 0) {
+ return true;
+ }
+ }
+ }
+ }
+
+ return false;
+ }
+ // Paper end
}
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index 83857a6..4dd672a 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -284,6 +284,7 @@ public class ChunkProviderServer implements IChunkProvider {
long chunkcoordinates = this.unloadQueue.popFirst();
Chunk chunk = this.chunks.get(chunkcoordinates);
if (chunk == null) continue;
+ if (chunk.hasLightUpdates()) continue; // Paper - Don't unload chunks with pending light updates.
ChunkUnloadEvent event = new ChunkUnloadEvent(chunk.bukkitChunk);
server.getPluginManager().callEvent(event);
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 3aac51d..24aa5b5 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -47,6 +47,11 @@ import org.bukkit.craftbukkit.CraftServer;
// CraftBukkit end
import co.aikar.timings.SpigotTimings; // Paper
+// Paper start
+import java.util.LinkedList;
+import java.util.Queue;
+// Paper end
+
public abstract class MinecraftServer implements Runnable, ICommandListener, IAsyncTaskHandler, IMojangStatistics {
public static final Logger LOGGER = LogManager.getLogger();
@@ -113,6 +118,7 @@ public abstract class MinecraftServer implements Runnable, ICommandListener, IAs
public final Thread primaryThread;
public java.util.Queue<Runnable> processQueue = new java.util.concurrent.ConcurrentLinkedQueue<Runnable>();
public int autosavePeriod;
+ public final Queue<Runnable> lightingQueue = new LinkedList<Runnable>(); // Paper - Queued light updates
// CraftBukkit end
public MinecraftServer(OptionSet options, Proxy proxy, DataConverterManager dataconvertermanager, YggdrasilAuthenticationService yggdrasilauthenticationservice, MinecraftSessionService minecraftsessionservice, GameProfileRepository gameprofilerepository, UserCache usercache) {
@@ -759,6 +765,35 @@ public abstract class MinecraftServer implements Runnable, ICommandListener, IAs
this.methodProfiler.b();
this.methodProfiler.b();
+
+ // Paper start - Flush light updates
+ if (!lightingQueue.isEmpty()) {
+ SpigotTimings.lightingQueueTimer.startTiming();
+
+ int updatesThisTick = 0;
+ long cachedTime = System.currentTimeMillis();
+ long startTime = cachedTime - (this.h[this.ticks % 100] / 1000000);
+ int maxTickTimeCap = MathHelper.floor((TICK_TIME / 1000000) * 0.8);
+ int maxTickTime = Math.max(0, (int) (maxTickTimeCap - (cachedTime - startTime)));
+ Runnable lightUpdate;
+
+ while (maxTickTime > 0 && (lightUpdate = lightingQueue.poll()) != null) {
+ lightUpdate.run();
+ if (++updatesThisTick % 10 == 0) {
+ long currentTime = System.currentTimeMillis();
+ if (currentTime - cachedTime > maxTickTime) {
+ break;
+ }
+
+ cachedTime = currentTime;
+ maxTickTime = Math.max(0, (int) (maxTickTimeCap - (currentTime - startTime)));
+ }
+ }
+
+ SpigotTimings.lightingQueueTimer.stopTiming();
+ }
+ // Paper end
+
org.spigotmc.WatchdogThread.tick(); // Spigot
co.aikar.timings.TimingsManager.FULL_SERVER_TICK.stopTiming(); // Paper
}
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index f8746b3..a6d4097 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -378,7 +378,17 @@ public abstract class World implements IBlockAccess {
} else {
if (iblockdata.c() != iblockdata1.c() || iblockdata.d() != iblockdata1.d()) {
this.methodProfiler.a("checkLight");
- this.w(blockposition);
+ // Paper start - Queue light update
+ if (!paperConfig.queueLightUpdates) {
+ this.w(blockposition);
+ } else {
+ ++chunk.lightUpdates;
+ getMinecraftServer().lightingQueue.add(() -> {
+ this.w(blockposition);
+ --chunk.lightUpdates;
+ });
+ }
+ // Paper end
this.methodProfiler.b();
}
--
2.8.0
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