mirror of
https://github.com/PaperMC/Paper.git
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This work is 100% unfinished. I am pushing it up so that we as a team can work on this update. Do not try to use this branch. You will fail.
251 lines
10 KiB
Diff
251 lines
10 KiB
Diff
From a3a7edec34bd96d3265f4af61927aeab46f195c9 Mon Sep 17 00:00:00 2001
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From: Byteflux <byte@byteflux.net>
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Date: Wed, 2 Mar 2016 00:52:31 -0600
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Subject: [PATCH] Lighting Queue
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This provides option to queue lighting updates to ensure they do not cause the server lag
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diff --git a/src/main/java/co/aikar/timings/WorldTimingsHandler.java b/src/main/java/co/aikar/timings/WorldTimingsHandler.java
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index 145cb274b..eff9dcf54 100644
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--- a/src/main/java/co/aikar/timings/WorldTimingsHandler.java
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+++ b/src/main/java/co/aikar/timings/WorldTimingsHandler.java
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@@ -50,6 +50,8 @@ public class WorldTimingsHandler {
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public final Timing worldSaveLevel;
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public final Timing chunkSaveData;
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+ public final Timing lightingQueueTimer;
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+
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public WorldTimingsHandler(World server) {
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String name = server.worldData.getName() +" - ";
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@@ -96,6 +98,8 @@ public class WorldTimingsHandler {
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tracker2 = Timings.ofSafe(name + "tracker stage 2");
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doTick = Timings.ofSafe(name + "doTick");
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tickEntities = Timings.ofSafe(name + "tickEntities");
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+
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+ lightingQueueTimer = Timings.ofSafe(name + "Lighting Queue");
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}
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public static Timing getTickList(WorldServer worldserver, String timingsType) {
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diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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index a340866f3..1e3405cc1 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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@@ -129,4 +129,10 @@ public class PaperWorldConfig {
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netherVoidTopDamage = getBoolean( "nether-ceiling-void-damage", false );
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log("Top of the nether void damage: " + netherVoidTopDamage);
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}
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+
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+ public boolean queueLightUpdates;
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+ private void queueLightUpdates() {
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+ queueLightUpdates = getBoolean("queue-light-updates", false);
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+ log("Lighting Queue enabled: " + queueLightUpdates);
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+ }
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}
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diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
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index 36ea4ad47..e5567701e 100644
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--- a/src/main/java/net/minecraft/server/Chunk.java
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+++ b/src/main/java/net/minecraft/server/Chunk.java
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@@ -91,6 +91,7 @@ public class Chunk implements IChunkAccess {
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return removed;
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}
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}
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+ final PaperLightingQueue.LightingQueue lightingQueue = new PaperLightingQueue.LightingQueue(this);
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// Paper end
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public boolean areNeighborsLoaded(final int radius) {
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switch (radius) {
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@@ -281,6 +282,13 @@ public class Chunk implements IChunkAccess {
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private void g(boolean flag) {
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this.world.methodProfiler.a("recheckGaps");
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if (this.world.areChunksLoaded(new BlockPosition(this.locX * 16 + 8, 0, this.locZ * 16 + 8), 16)) {
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+ this.runOrQueueLightUpdate(() -> recheckGaps(flag)); // Paper - Queue light update
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+ }
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+ }
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+
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+ private void recheckGaps(boolean flag) {
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+ if (true) {
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+ // Paper end
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for (int i = 0; i < 16; ++i) {
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for (int j = 0; j < 16; ++j) {
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if (this.h[i + j * 16]) {
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@@ -524,6 +532,7 @@ public class Chunk implements IChunkAccess {
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if (flag1) {
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this.initLighting();
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} else {
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+ this.runOrQueueLightUpdate(() -> { // Paper - Queue light update
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int i1 = iblockdata.b(this.world, blockposition);
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int j1 = iblockdata1.b(this.world, blockposition);
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@@ -531,6 +540,7 @@ public class Chunk implements IChunkAccess {
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if (i1 != j1 && (i1 < j1 || this.getBrightness(EnumSkyBlock.SKY, blockposition) > 0 || this.getBrightness(EnumSkyBlock.BLOCK, blockposition) > 0)) {
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this.c(i, k);
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}
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+ }); // Paper
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}
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TileEntity tileentity;
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@@ -1290,6 +1300,16 @@ public class Chunk implements IChunkAccess {
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return this.E == 8;
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}
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+ // Paper start
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+ public void runOrQueueLightUpdate(Runnable runnable) {
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+ if (this.world.paperConfig.queueLightUpdates) {
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+ lightingQueue.add(runnable);
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+ } else {
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+ runnable.run();
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+ }
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+ }
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+ // Paper end
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+
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public static enum EnumTileEntityState {
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IMMEDIATE, QUEUED, CHECK;
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diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
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index badfe86b2..51bc23daf 100644
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--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
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+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
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@@ -323,6 +323,7 @@ public class ChunkProviderServer implements IChunkProvider {
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return false;
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}
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save = event.isSaveChunk();
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+ chunk.lightingQueue.processUnload(); // Paper
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// Update neighbor counts
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for (int x = -2; x < 3; x++) {
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diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index 2e691b9f6..4473c3b51 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
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+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -825,7 +825,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
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protected void v() {
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co.aikar.timings.TimingsManager.FULL_SERVER_TICK.startTiming(); // Paper
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this.slackActivityAccountant.tickStarted(); // Spigot
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- long i = SystemUtils.c();
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+ long i = SystemUtils.c(); long startTime = i; // Paper
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++this.ticks;
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if (this.S) {
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@@ -883,6 +883,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
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this.methodProfiler.e();
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this.methodProfiler.e();
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org.spigotmc.WatchdogThread.tick(); // Spigot
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+ PaperLightingQueue.processQueue(startTime); // Paper
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this.slackActivityAccountant.tickEnded(l); // Spigot
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co.aikar.timings.TimingsManager.FULL_SERVER_TICK.stopTiming(); // Paper
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}
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diff --git a/src/main/java/net/minecraft/server/PaperLightingQueue.java b/src/main/java/net/minecraft/server/PaperLightingQueue.java
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new file mode 100644
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index 000000000..345cd5824
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--- /dev/null
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+++ b/src/main/java/net/minecraft/server/PaperLightingQueue.java
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@@ -0,0 +1,92 @@
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+package net.minecraft.server;
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+
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+import co.aikar.timings.Timing;
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+import it.unimi.dsi.fastutil.objects.ObjectCollection;
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+
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+import java.util.ArrayDeque;
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+
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+class PaperLightingQueue {
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+ private static final long MAX_TIME = (long) (1000000000 / 20 * .95);
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+ private static int updatesThisTick;
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+
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+
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+ static void processQueue(long curTime) {
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+ updatesThisTick = 0;
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+
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+ final long startTime = System.nanoTime();
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+ final long maxTickTime = MAX_TIME - (startTime - curTime);
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+
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+ START:
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+ for (World world : MinecraftServer.getServer().worlds) {
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+ if (!world.paperConfig.queueLightUpdates) {
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+ continue;
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+ }
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+
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+ ObjectCollection<Chunk> loadedChunks = ((WorldServer) world).getChunkProviderServer().chunks.values();
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+ for (Chunk chunk : loadedChunks.toArray(new Chunk[loadedChunks.size()])) {
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+ if (chunk.lightingQueue.processQueue(startTime, maxTickTime)) {
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+ break START;
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+ }
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+ }
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+ }
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+ }
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+
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+ static class LightingQueue extends ArrayDeque<Runnable> {
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+ final private Chunk chunk;
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+
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+ LightingQueue(Chunk chunk) {
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+ super();
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+ this.chunk = chunk;
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+ }
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+
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+ /**
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+ * Processes the lighting queue for this chunk
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+ *
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+ * @param startTime If start Time is 0, we will not limit execution time
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+ * @param maxTickTime Maximum time to spend processing lighting updates
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+ * @return true to abort processing furthur lighting updates
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+ */
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+ private boolean processQueue(long startTime, long maxTickTime) {
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+ if (this.isEmpty()) {
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+ return false;
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+ }
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+ try (Timing ignored = chunk.world.timings.lightingQueueTimer.startTiming()) {
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+ Runnable lightUpdate;
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+ while ((lightUpdate = this.poll()) != null) {
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+ lightUpdate.run();
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+ if (startTime > 0 && ++PaperLightingQueue.updatesThisTick % 10 == 0 && PaperLightingQueue.updatesThisTick > 10) {
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+ if (System.nanoTime() - startTime > maxTickTime) {
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+ return true;
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+ }
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+ }
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+ }
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+ }
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+
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+ return false;
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+ }
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+
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+ /**
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+ * Flushes lighting updates to unload the chunk
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+ */
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+ void processUnload() {
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+ if (!chunk.world.paperConfig.queueLightUpdates) {
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+ return;
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+ }
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+ processQueue(0, 0); // No timeout
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+
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+ final int radius = 1; // TODO: bitflip, why should this ever be 2?
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+ for (int x = chunk.locX - radius; x <= chunk.locX + radius; ++x) {
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+ for (int z = chunk.locZ - radius; z <= chunk.locZ + radius; ++z) {
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+ if (x == chunk.locX && z == chunk.locZ) {
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+ continue;
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+ }
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+
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+ Chunk neighbor = MCUtil.getLoadedChunkWithoutMarkingActive(chunk.world, x, z);
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+ if (neighbor != null) {
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+ neighbor.lightingQueue.processQueue(0, 0); // No timeout
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+ }
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+ }
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+ }
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+ }
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+ }
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+}
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index c605d7e52..f57bd081b 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -325,7 +325,7 @@ public abstract class World implements GeneratorAccess, IIBlockAccess, AutoClose
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if (iblockdata2.b(this, blockposition) != iblockdata1.b(this, blockposition) || iblockdata2.e() != iblockdata1.e()) {
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this.methodProfiler.a("checkLight");
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- this.r(blockposition);
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+ chunk.runOrQueueLightUpdate(() -> this.r(blockposition)); // Paper - Queue light update
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this.methodProfiler.e();
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}
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--
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2.18.0
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