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19a620213f
This is a lot but basically adds a method to disable the dropping of experience and drops experience by default. This way things that require XP to be dropped manually (via modification), they can drop XP themselves when needed but without touching anywhere else that may drop xp. It should be noted this causes breakNaturally() to now drop experience.
176 lines
9.1 KiB
Diff
176 lines
9.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Mon, 6 Apr 2020 04:20:44 -0700
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Subject: [PATCH] Execute chunk tasks mid-tick
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This will help the server load chunks if tick times are high.
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diff --git a/src/main/java/co/aikar/timings/MinecraftTimings.java b/src/main/java/co/aikar/timings/MinecraftTimings.java
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index 6b3cde6d4d1e63bec01f502f2027ee9fddac08aa..46449728f69ee7d4f78470f8da23c055acd53a3b 100644
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--- a/src/main/java/co/aikar/timings/MinecraftTimings.java
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+++ b/src/main/java/co/aikar/timings/MinecraftTimings.java
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@@ -48,6 +48,8 @@ public final class MinecraftTimings {
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public static final Timing antiXrayObfuscateTimer = Timings.ofSafe("anti-xray - obfuscate");
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public static final Timing scoreboardScoreSearch = Timings.ofSafe("Scoreboard score search"); // Paper - add timings for scoreboard search
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+ public static final Timing midTickChunkTasks = Timings.ofSafe("Mid Tick Chunk Tasks");
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+
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private static final Map<Class<?>, String> taskNameCache = new MapMaker().weakKeys().makeMap();
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private MinecraftTimings() {}
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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 6f17e5631aace53f75e6badf514dbb77c50065b9..0a23cfeaba071c2179de1931caa86bc46462c338 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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@@ -1347,8 +1347,79 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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return flag;
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}
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+ // Paper start - execute chunk tasks mid tick
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+ static final long CHUNK_TASK_QUEUE_BACKOFF_MIN_TIME = 25L * 1000L; // 25us
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+ static final long MAX_CHUNK_EXEC_TIME = 1000L; // 1us
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+
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+ static final long TASK_EXECUTION_FAILURE_BACKOFF = 5L * 1000L; // 5us
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+
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+ private static long lastMidTickExecute;
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+ private static long lastMidTickExecuteFailure;
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+
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+ private boolean tickMidTickTasks() {
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+ // give all worlds a fair chance at by targetting them all.
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+ // if we execute too many tasks, that's fine - we have logic to correctly handle overuse of allocated time.
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+ boolean executed = false;
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+ for (ServerLevel world : this.getAllLevels()) {
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+ long currTime = System.nanoTime();
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+ if (currTime - world.lastMidTickExecuteFailure <= TASK_EXECUTION_FAILURE_BACKOFF) {
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+ continue;
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+ }
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+ if (!world.getChunkSource().pollTask()) {
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+ // we need to back off if this fails
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+ world.lastMidTickExecuteFailure = currTime;
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+ } else {
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+ executed = true;
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+ }
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+ }
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+
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+ return executed;
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+ }
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+
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+ public final void executeMidTickTasks() {
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+ org.spigotmc.AsyncCatcher.catchOp("mid tick chunk task execution");
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+ long startTime = System.nanoTime();
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+ if ((startTime - lastMidTickExecute) <= CHUNK_TASK_QUEUE_BACKOFF_MIN_TIME || (startTime - lastMidTickExecuteFailure) <= TASK_EXECUTION_FAILURE_BACKOFF) {
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+ // it's shown to be bad to constantly hit the queue (chunk loads slow to a crawl), even if no tasks are executed.
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+ // so, backoff to prevent this
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+ return;
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+ }
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+
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+ co.aikar.timings.MinecraftTimings.midTickChunkTasks.startTiming();
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+ try {
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+ for (;;) {
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+ boolean moreTasks = this.tickMidTickTasks();
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+ long currTime = System.nanoTime();
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+ long diff = currTime - startTime;
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+
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+ if (!moreTasks || diff >= MAX_CHUNK_EXEC_TIME) {
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+ if (!moreTasks) {
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+ lastMidTickExecuteFailure = currTime;
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+ }
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+
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+ // note: negative values reduce the time
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+ long overuse = diff - MAX_CHUNK_EXEC_TIME;
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+ if (overuse >= (10L * 1000L * 1000L)) { // 10ms
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+ // make sure something like a GC or dumb plugin doesn't screw us over...
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+ overuse = 10L * 1000L * 1000L; // 10ms
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+ }
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+
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+ double overuseCount = (double)overuse/(double)MAX_CHUNK_EXEC_TIME;
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+ long extraSleep = (long)Math.round(overuseCount*CHUNK_TASK_QUEUE_BACKOFF_MIN_TIME);
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+
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+ lastMidTickExecute = currTime + extraSleep;
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+ return;
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+ }
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+ }
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+ } finally {
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+ co.aikar.timings.MinecraftTimings.midTickChunkTasks.stopTiming();
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+ }
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+ }
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+ // Paper end - execute chunk tasks mid tick
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+
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private boolean pollTaskInternal() {
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if (super.pollTask()) {
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+ this.executeMidTickTasks(); // Paper - execute chunk tasks mid tick
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return true;
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} else {
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if (this.tickRateManager.isSprinting() || this.haveTime()) {
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diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
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index 63fad53a9184d7ab97f143b7d85ae9ef2ca9f8bc..1483007b79e18107e41037c279e048f04f666d1d 100644
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--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
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+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
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@@ -566,6 +566,7 @@ public class ServerChunkCache extends ChunkSource {
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boolean flag1 = this.level.ticksPerSpawnCategory.getLong(org.bukkit.entity.SpawnCategory.ANIMAL) != 0L && this.level.getLevelData().getGameTime() % this.level.ticksPerSpawnCategory.getLong(org.bukkit.entity.SpawnCategory.ANIMAL) == 0L; // CraftBukkit
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Iterator iterator1 = list.iterator();
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+ int chunksTicked = 0; // Paper
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while (iterator1.hasNext()) {
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ServerChunkCache.ChunkAndHolder chunkproviderserver_a = (ServerChunkCache.ChunkAndHolder) iterator1.next();
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LevelChunk chunk1 = chunkproviderserver_a.chunk;
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@@ -579,6 +580,7 @@ public class ServerChunkCache extends ChunkSource {
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if (this.level.shouldTickBlocksAt(chunkcoordintpair.toLong())) {
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this.level.tickChunk(chunk1, l);
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+ if ((chunksTicked++ & 1) == 0) net.minecraft.server.MinecraftServer.getServer().executeMidTickTasks(); // Paper
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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/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
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index a885b90a44066103133af953d56bb3dbb9b899be..2c759854ed9f78c48c4e9ed2dc72e5a5693bd712 100644
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--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
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+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
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@@ -217,6 +217,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
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private final StructureCheck structureCheck;
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private final boolean tickTime;
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private final RandomSequences randomSequences;
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+ public long lastMidTickExecuteFailure; // Paper - execute chunk tasks mid tick
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// CraftBukkit start
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public final LevelStorageSource.LevelStorageAccess convertable;
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@@ -1211,6 +1212,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
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if (fluid1.is(fluid)) {
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fluid1.tick(this, pos);
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}
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+ MinecraftServer.getServer().executeMidTickTasks(); // Paper - exec chunk tasks during world tick
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}
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@@ -1220,6 +1222,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
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if (iblockdata.is(block)) {
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iblockdata.tick(this, pos, this.random);
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}
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+ MinecraftServer.getServer().executeMidTickTasks(); // Paper - exec chunk tasks during world tick
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}
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diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
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index 73d3eff15c3faea7716beb5b53d66af434005d0f..cddac4571578ac8d647f3f4b20fb6f7b773aabe3 100644
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--- a/src/main/java/net/minecraft/world/level/Level.java
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+++ b/src/main/java/net/minecraft/world/level/Level.java
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@@ -927,6 +927,11 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
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// Spigot end
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} else if (flag && this.shouldTickBlocksAt(tickingblockentity.getPos())) {
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tickingblockentity.tick();
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+ // Paper start - execute chunk tasks during tick
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+ if ((this.tileTickPosition & 7) == 0) {
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+ MinecraftServer.getServer().executeMidTickTasks();
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+ }
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+ // Paper end - execute chunk tasks during tick
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}
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}
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this.blockEntityTickers.removeAll(toRemove);
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@@ -941,6 +946,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
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public <T extends Entity> void guardEntityTick(Consumer<T> tickConsumer, T entity) {
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try {
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tickConsumer.accept(entity);
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+ MinecraftServer.getServer().executeMidTickTasks(); // Paper - execute chunk tasks mid tick
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} catch (Throwable throwable) {
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if (throwable instanceof ThreadDeath) throw throwable; // Paper
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// Paper start - Prevent tile entity and entity crashes
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