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Paper/Spigot-Server-Patches/0030-Lighting-Queue.patch
Aikar e7a59cde75
clear current chunk and entity slice on chunk unload 
ideally this should of never mattered, as it will only
be hit if you teleport out of an unloaded chunk...

But apparently some people are triggering this.

See #1223
2018-07-30 00:51:58 -04:00

250 Zeilen
9.9 KiB
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Originalformat Blame Verlauf

From 14b86189f568dce175fc701ddf661c17f9726448 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
This provides option to queue lighting updates to ensure they do not cause the server lag
diff --git a/src/main/java/co/aikar/timings/WorldTimingsHandler.java b/src/main/java/co/aikar/timings/WorldTimingsHandler.java
index e0ad559b74..4eebd9fae9 100644
--- a/src/main/java/co/aikar/timings/WorldTimingsHandler.java
+++ b/src/main/java/co/aikar/timings/WorldTimingsHandler.java
@@ -49,6 +49,8 @@ public class WorldTimingsHandler {
public final Timing worldSaveLevel;
public final Timing chunkSaveData;
+ public final Timing lightingQueueTimer;
+
public WorldTimingsHandler(World server) {
String name = server.worldData.getName() +" - ";
@@ -95,5 +97,7 @@ public class WorldTimingsHandler {
tracker2 = Timings.ofSafe(name + "tracker stage 2");
doTick = Timings.ofSafe(name + "doTick");
tickEntities = Timings.ofSafe(name + "tickEntities");
+
+ lightingQueueTimer = Timings.ofSafe(name + "Lighting Queue");
}
}
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index bf7af475ce..94a1730459 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -135,4 +135,10 @@ public class PaperWorldConfig {
netherVoidTopDamage = getBoolean( "nether-ceiling-void-damage", false );
log("Top of the nether void damage: " + netherVoidTopDamage);
}
+
+ 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 d3b4145046..f98fe73efa 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -61,6 +61,7 @@ public class Chunk {
return removed;
}
}
+ final PaperLightingQueue.LightingQueue lightingQueue = new PaperLightingQueue.LightingQueue(this);
// Paper end
private boolean done;
private boolean lit;
@@ -258,6 +259,13 @@ 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)) {
+ this.runOrQueueLightUpdate(() -> recheckGaps(flag)); // Paper - Queue light update
+ }
+ }
+
+ 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.i[i + j * 16]) {
@@ -511,6 +519,7 @@ public class Chunk {
if (flag) {
this.initLighting();
} else {
+ this.runOrQueueLightUpdate(() -> { // Paper - Queue light update
int j1 = iblockdata.c();
int k1 = iblockdata1.c();
@@ -525,6 +534,7 @@ 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
}
TileEntity tileentity;
@@ -1378,6 +1388,16 @@ public class Chunk {
this.w = i;
}
+ // Paper start
+ public void runOrQueueLightUpdate(Runnable runnable) {
+ if (this.world.paperConfig.queueLightUpdates) {
+ lightingQueue.add(runnable);
+ } else {
+ runnable.run();
+ }
+ }
+ // Paper end
+
public static enum EnumTileEntityState {
IMMEDIATE, QUEUED, CHECK;
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index bd006ef741..2b320cbd18 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -295,6 +295,7 @@ public class ChunkProviderServer implements IChunkProvider {
return false;
}
save = event.isSaveChunk();
+ chunk.lightingQueue.processUnload(); // Paper
// Update neighbor counts
for (int x = -2; x < 3; x++) {
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 47fe9262a5..d63a243f31 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -722,7 +722,7 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IAs
protected void C() throws ExceptionWorldConflict { // CraftBukkit - added throws
co.aikar.timings.TimingsManager.FULL_SERVER_TICK.startTiming(); // Paper
this.slackActivityAccountant.tickStarted(); // Spigot
- long i = System.nanoTime();
+ long i = System.nanoTime(); long startTime = i; // Paper
++this.ticks;
if (this.T) {
@@ -783,6 +783,7 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IAs
this.methodProfiler.b();
org.spigotmc.WatchdogThread.tick(); // Spigot
+ PaperLightingQueue.processQueue(startTime); // Paper
this.slackActivityAccountant.tickEnded(tickNanos); // Spigot
co.aikar.timings.TimingsManager.FULL_SERVER_TICK.stopTiming(); // Paper
}
diff --git a/src/main/java/net/minecraft/server/PaperLightingQueue.java b/src/main/java/net/minecraft/server/PaperLightingQueue.java
new file mode 100644
index 0000000000..345cd58240
--- /dev/null
+++ b/src/main/java/net/minecraft/server/PaperLightingQueue.java
@@ -0,0 +1,92 @@
+package net.minecraft.server;
+
+import co.aikar.timings.Timing;
+import it.unimi.dsi.fastutil.objects.ObjectCollection;
+
+import java.util.ArrayDeque;
+
+class PaperLightingQueue {
+ private static final long MAX_TIME = (long) (1000000000 / 20 * .95);
+ private static int updatesThisTick;
+
+
+ static void processQueue(long curTime) {
+ updatesThisTick = 0;
+
+ final long startTime = System.nanoTime();
+ final long maxTickTime = MAX_TIME - (startTime - curTime);
+
+ START:
+ for (World world : MinecraftServer.getServer().worlds) {
+ if (!world.paperConfig.queueLightUpdates) {
+ continue;
+ }
+
+ ObjectCollection<Chunk> loadedChunks = ((WorldServer) world).getChunkProviderServer().chunks.values();
+ for (Chunk chunk : loadedChunks.toArray(new Chunk[loadedChunks.size()])) {
+ if (chunk.lightingQueue.processQueue(startTime, maxTickTime)) {
+ break START;
+ }
+ }
+ }
+ }
+
+ static class LightingQueue extends ArrayDeque<Runnable> {
+ final private Chunk chunk;
+
+ LightingQueue(Chunk chunk) {
+ super();
+ this.chunk = chunk;
+ }
+
+ /**
+ * Processes the lighting queue for this chunk
+ *
+ * @param startTime If start Time is 0, we will not limit execution time
+ * @param maxTickTime Maximum time to spend processing lighting updates
+ * @return true to abort processing furthur lighting updates
+ */
+ private boolean processQueue(long startTime, long maxTickTime) {
+ if (this.isEmpty()) {
+ return false;
+ }
+ try (Timing ignored = chunk.world.timings.lightingQueueTimer.startTiming()) {
+ Runnable lightUpdate;
+ while ((lightUpdate = this.poll()) != null) {
+ lightUpdate.run();
+ if (startTime > 0 && ++PaperLightingQueue.updatesThisTick % 10 == 0 && PaperLightingQueue.updatesThisTick > 10) {
+ if (System.nanoTime() - startTime > maxTickTime) {
+ return true;
+ }
+ }
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Flushes lighting updates to unload the chunk
+ */
+ void processUnload() {
+ if (!chunk.world.paperConfig.queueLightUpdates) {
+ return;
+ }
+ processQueue(0, 0); // No timeout
+
+ final int radius = 1; // TODO: bitflip, why should this ever be 2?
+ for (int x = chunk.locX - radius; x <= chunk.locX + radius; ++x) {
+ for (int z = chunk.locZ - radius; z <= chunk.locZ + radius; ++z) {
+ if (x == chunk.locX && z == chunk.locZ) {
+ continue;
+ }
+
+ Chunk neighbor = MCUtil.getLoadedChunkWithoutMarkingActive(chunk.world, x, z);
+ if (neighbor != null) {
+ neighbor.lightingQueue.processQueue(0, 0); // No timeout
+ }
+ }
+ }
+ }
+ }
+}
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index fd5f8102af..77ed2d2494 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -391,7 +391,7 @@ public abstract class World implements IBlockAccess {
} else {
if (iblockdata.c() != iblockdata1.c() || iblockdata.d() != iblockdata1.d()) {
this.methodProfiler.a("checkLight");
- this.w(blockposition);
+ chunk.runOrQueueLightUpdate(() -> this.w(blockposition)); // Paper - Queue light update
this.methodProfiler.b();
}
--
2.18.0
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