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SparklyPaperMC/patches/server/0009-Skip-EntityScheduler-s-executeTick-checks-if-there-i.patch
2024-05-30 20:22:23 -03:00

138 lines
9.1 KiB
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MrPowerGamerBR <git@mrpowergamerbr.com>
Date: Sun, 19 Nov 2023 12:35:16 -0300
Subject: [PATCH] Skip EntityScheduler's executeTick checks if there isn't any
tasks to be run
On each tick, Paper runs EntityScheduler's executeTick of each entity. This is a bit expensive, due to ArrayDeque's size() call because it ain't a simple "get the current queue size" function, due to the thread checks, and because it needs to iterate all entities in all worlds.
To avoid the hefty ArrayDeque's size() call, we check if we *really* need to execute the executeTick, by adding all entities with scheduled tasks to a global set.
Most entities won't have any scheduled tasks, so this is a nice performance bonus. These optimizations, however, wouldn't work in a Folia environment, but because in SparklyPaper executeTick is always executed on the main thread, it ain't an issue for us (yay).
diff --git a/src/main/java/io/papermc/paper/threadedregions/EntityScheduler.java b/src/main/java/io/papermc/paper/threadedregions/EntityScheduler.java
index 62484ebf4550b05182f693a3180bbac5d5fd906d..67800e426445060a8343e27a7452b8d7ed27ac5f 100644
--- a/src/main/java/io/papermc/paper/threadedregions/EntityScheduler.java
+++ b/src/main/java/io/papermc/paper/threadedregions/EntityScheduler.java
@@ -36,6 +36,7 @@ public final class EntityScheduler {
* The Entity. Note that it is the CraftEntity, since only that class properly tracks world transfers.
*/
public final CraftEntity entity;
+ public final net.minecraft.server.MinecraftServer server; // SparklyPaper - skip EntityScheduler's executeTick checks if there isn't any tasks to be run
private static final record ScheduledTask(Consumer<? extends Entity> run, Consumer<? extends Entity> retired) {}
@@ -46,7 +47,8 @@ public final class EntityScheduler {
private final ArrayDeque<ScheduledTask> currentlyExecuting = new ArrayDeque<>();
- public EntityScheduler(final CraftEntity entity) {
+ public EntityScheduler(final net.minecraft.server.MinecraftServer server, final CraftEntity entity) { // SparklyPaper - skip EntityScheduler's executeTick checks if there isn't any tasks to be run
+ this.server = Validate.notNull(server);
this.entity = Validate.notNull(entity);
}
@@ -61,14 +63,16 @@ public final class EntityScheduler {
* @throws IllegalStateException If the scheduler is already retired.
*/
public void retire() {
+ final Entity thisEntity = this.entity.getHandleRaw(); // SparklyPaper - skip EntityScheduler's executeTick checks if there isn't any tasks to be run
synchronized (this.stateLock) {
if (this.tickCount == RETIRED_TICK_COUNT) {
throw new IllegalStateException("Already retired");
}
this.tickCount = RETIRED_TICK_COUNT;
+ this.server.entitiesWithScheduledTasks.remove(thisEntity); // SparklyPaper - skip EntityScheduler's executeTick checks if there isn't any tasks to be run
}
- final Entity thisEntity = this.entity.getHandleRaw();
+ // final Entity thisEntity = this.entity.getHandleRaw(); // SparklyPaper - skip EntityScheduler's executeTick checks if there isn't any tasks to be run (moved up)
// correctly handle and order retiring while running executeTick
for (int i = 0, len = this.currentlyExecuting.size(); i < len; ++i) {
@@ -124,6 +128,7 @@ public final class EntityScheduler {
if (this.tickCount == RETIRED_TICK_COUNT) {
return false;
}
+ this.server.entitiesWithScheduledTasks.add(this.entity.getHandleRaw()); // SparklyPaper - skip EntityScheduler's executeTick checks if there isn't any tasks to be run
this.oneTimeDelayed.computeIfAbsent(this.tickCount + Math.max(1L, delay), (final long keyInMap) -> {
return new ArrayList<>();
}).add(task);
@@ -143,6 +148,13 @@ public final class EntityScheduler {
TickThread.ensureTickThread(thisEntity, "May not tick entity scheduler asynchronously");
final List<ScheduledTask> toRun;
synchronized (this.stateLock) {
+ // SparklyPaper start - skip EntityScheduler's executeTick checks if there isn't any tasks to be run
+ // Do we *really* have scheduled tasks tho?
+ if (this.currentlyExecuting.isEmpty() && this.oneTimeDelayed.isEmpty()) { // Check if we have any pending tasks and, if not, skip!
+ this.server.entitiesWithScheduledTasks.remove(thisEntity); // We don't! Bye bye!!
+ return;
+ }
+ // SparklyPaper end
if (this.tickCount == RETIRED_TICK_COUNT) {
throw new IllegalStateException("Ticking retired scheduler");
}
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 0ed42fa899721f83b598db05be1b5f321af3614a..1148b3ab0a582fff17f0101516df4b5037b49aba 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -316,7 +316,8 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
public volatile Thread shutdownThread; // Paper
public volatile boolean abnormalExit = false; // Paper
public static final long SERVER_INIT = System.nanoTime(); // Paper - Lag compensation
-
+ public final Set<Entity> entitiesWithScheduledTasks = java.util.concurrent.ConcurrentHashMap.newKeySet(); // SparklyPaper - skip EntityScheduler's executeTick checks if there isn't any tasks to be run (concurrent because plugins may schedule tasks async)
+
public static <S extends MinecraftServer> S spin(Function<Thread, S> serverFactory) {
AtomicReference<S> atomicreference = new AtomicReference();
Thread thread = new io.papermc.paper.util.TickThread(() -> { // Paper - rewrite chunk system
@@ -1700,6 +1701,18 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
MinecraftTimings.bukkitSchedulerTimer.stopTiming(); // Spigot // Paper
// Paper start - Folia scheduler API
((io.papermc.paper.threadedregions.scheduler.FoliaGlobalRegionScheduler) Bukkit.getGlobalRegionScheduler()).tick();
+ // SparklyPaper - skip EntityScheduler's executeTick checks if there isn't any tasks to be run
+ for (final Entity entity : entitiesWithScheduledTasks) {
+ if (entity.isRemoved()) {
+ continue;
+ }
+
+ final org.bukkit.craftbukkit.entity.CraftEntity bukkit = entity.getBukkitEntityRaw();
+ if (bukkit != null) {
+ bukkit.taskScheduler.executeTick();
+ }
+ }
+ /*
getAllLevels().forEach(level -> {
for (final Entity entity : level.getEntityLookup().getAllCopy()) { // Paper - rewrite chunk system
if (entity.isRemoved()) {
@@ -1711,6 +1724,8 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
}
}
});
+ */
+ // SparklyPaper end
// Paper end - Folia scheduler API
io.papermc.paper.adventure.providers.ClickCallbackProviderImpl.CALLBACK_MANAGER.handleQueue(this.tickCount); // Paper
this.profiler.push("commandFunctions");
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
index a2d336ceb52b63db5c03432ee7bc94dc6a742b82..731ed9eb77c3d21ffa4c7ecb3b022836dd8057f6 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -69,7 +69,7 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
private final CraftPersistentDataContainer persistentDataContainer = new CraftPersistentDataContainer(CraftEntity.DATA_TYPE_REGISTRY);
protected net.kyori.adventure.pointer.Pointers adventure$pointers; // Paper - implement pointers
// Paper start - Folia shedulers
- public final io.papermc.paper.threadedregions.EntityScheduler taskScheduler = new io.papermc.paper.threadedregions.EntityScheduler(this);
+ public final io.papermc.paper.threadedregions.EntityScheduler taskScheduler; // = new io.papermc.paper.threadedregions.EntityScheduler(this); // SparklyPaper - skip EntityScheduler's executeTick checks if there isn't any tasks to be run
private final io.papermc.paper.threadedregions.scheduler.FoliaEntityScheduler apiScheduler = new io.papermc.paper.threadedregions.scheduler.FoliaEntityScheduler(this);
@Override
@@ -82,6 +82,7 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
this.server = server;
this.entity = entity;
this.entityType = CraftEntityType.minecraftToBukkit(entity.getType());
+ this.taskScheduler = new io.papermc.paper.threadedregions.EntityScheduler(this.entity.getServer(), this); // SparklyPaper - skip EntityScheduler's executeTick checks if there isn't any tasks to be run
}
public static <T extends Entity> CraftEntity getEntity(CraftServer server, T entity) {