mirror of
https://github.com/PaperMC/Paper.git
synced 2024-08-28 07:29:40 +02:00
281 lines
12 KiB
Diff
281 lines
12 KiB
Diff
From 121e2e7e17e70d345dd182ab23b4b02810174b18 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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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 145cb274b0..eff9dcf54f 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/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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index 7691409f6c..cfcc244672 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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@@ -191,6 +191,13 @@ public class PaperConfig {
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return config.getString(path, config.getString(path));
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}
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+ public static int maxTickMsLostLightQueue;
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+ private static void lightQueue() {
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+ int badSetting = config.getInt("queue-light-updates-max-loss", 10);
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+ config.set("queue-light-updates-max-loss", null);
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+ maxTickMsLostLightQueue = getInt("settings.queue-light-updates-max-loss", badSetting);
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+ }
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+
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private static void timings() {
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boolean timings = getBoolean("timings.enabled", true);
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boolean verboseTimings = getBoolean("timings.verbose", true);
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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 a797a57671..59d82fa4fb 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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@@ -139,4 +139,12 @@ public class PaperWorldConfig {
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}
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}
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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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+ log("Warning: This feature may help reduce TPS loss from light, but comes at the cost of buggy light data");
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+ log("We are working to improve this feature.");
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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 e15ed21f67..a9aa13fbf8 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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@@ -94,6 +94,7 @@ 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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@@ -284,7 +285,7 @@ public class Chunk implements IChunkAccess {
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private void g(boolean flag) {
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this.world.methodProfiler.enter("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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+ if (this.areNeighborsLoaded(1)) { // Paper
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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.g[i + j * 16]) {
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@@ -335,7 +336,7 @@ public class Chunk implements IChunkAccess {
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}
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private void a(int i, int j, int k, int l) {
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- if (l > k && this.world.areChunksLoaded(new BlockPosition(i, 0, j), 16)) {
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+ if (l > k && this.areNeighborsLoaded(1)) { // Paper
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for (int i1 = k; i1 < l; ++i1) {
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this.world.c(EnumSkyBlock.SKY, new BlockPosition(i, i1, j));
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}
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@@ -535,6 +536,7 @@ 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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@@ -542,6 +544,7 @@ 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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@@ -1358,6 +1361,16 @@ public class Chunk implements IChunkAccess {
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return this.D == 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 eb83e20d50..c2ecc034e8 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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@@ -313,6 +313,7 @@ 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 7ca7b9f3ac..00f1c36e99 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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@@ -890,7 +890,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
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protected void a(BooleanSupplier booleansupplier) {
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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.getMonotonicNanos();
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+ long i = SystemUtils.getMonotonicNanos(); long startTime = i; // Paper
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++this.ticks;
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if (this.S) {
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@@ -948,6 +948,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
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this.methodProfiler.exit();
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this.methodProfiler.exit();
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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 0000000000..9783f3a0d9
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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 +1,98 @@
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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 com.destroystokyo.paper.PaperConfig;
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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) (1000000 * (50 + PaperConfig.maxTickMsLostLightQueue));
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+
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+ static void processQueue(long curTime) {
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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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+ if (maxTickTime <= 0) {
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+ return;
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+ }
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+
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+ START:
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+ for (World world : MinecraftServer.getServer().getWorlds()) {
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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).getChunkProvider().chunks.values();
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+ for (Chunk chunk : loadedChunks.toArray(new Chunk[0])) {
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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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+ if (isOutOfTime(maxTickTime, startTime)) {
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+ return true;
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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 (isOutOfTime(maxTickTime, startTime)) {
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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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+ 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;
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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 = chunk.world.getChunkIfLoaded(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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+ private static boolean isOutOfTime(long maxTickTime, long startTime) {
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+ return startTime > 0 && System.nanoTime() - startTime > maxTickTime;
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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 b10e4c409d..f3755fcfbe 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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@@ -329,7 +329,7 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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if (iblockdata2.b(this, blockposition) != iblockdata1.b(this, blockposition) || iblockdata2.e() != iblockdata1.e()) {
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this.methodProfiler.enter("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.exit();
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}
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--
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2.21.0
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