Mirror von
https://github.com/PaperMC/Paper.git
synchronisiert 2024-12-15 02:50:09 +01:00
c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
79 Zeilen
4.6 KiB
Diff
79 Zeilen
4.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Jake Potrebic <jake.m.potrebic@gmail.com>
|
|
Date: Tue, 22 Mar 2022 12:44:30 -0700
|
|
Subject: [PATCH] Throw exception on world create while being ticked
|
|
|
|
There are no plans to support creating worlds while worlds are
|
|
being ticked themselvess.
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
index 94aa901b77b19445a33d5b2b24ba2e947d2a6aef..11b9eb8d7d5f9ad736f2c6784c5d9e745a355093 100644
|
|
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
@@ -317,6 +317,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
|
|
public final double[] recentTps = new double[ 3 ];
|
|
// Spigot end
|
|
public final io.papermc.paper.configuration.PaperConfigurations paperConfigurations; // Paper - add paper configuration files
|
|
+ public boolean isIteratingOverLevels = false; // Paper - Throw exception on world create while being ticked
|
|
|
|
public static <S extends MinecraftServer> S spin(Function<Thread, S> serverFactory) {
|
|
AtomicReference<S> atomicreference = new AtomicReference();
|
|
@@ -1580,7 +1581,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
|
|
this.getFunctions().tick();
|
|
MinecraftTimings.commandFunctionsTimer.stopTiming(); // Spigot // Paper
|
|
this.profiler.popPush("levels");
|
|
- Iterator iterator = this.getAllLevels().iterator();
|
|
+ //Iterator iterator = this.getAllLevels().iterator(); // Paper - Throw exception on world create while being ticked; moved down
|
|
|
|
// CraftBukkit start
|
|
// Run tasks that are waiting on processing
|
|
@@ -1612,6 +1613,8 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
|
|
// Paper end - Perf: Optimize time updates
|
|
MinecraftTimings.timeUpdateTimer.stopTiming(); // Spigot // Paper
|
|
|
|
+ this.isIteratingOverLevels = true; // Paper - Throw exception on world create while being ticked
|
|
+ Iterator iterator = this.getAllLevels().iterator(); // Paper - Throw exception on world create while being ticked; move down
|
|
while (iterator.hasNext()) {
|
|
ServerLevel worldserver = (ServerLevel) iterator.next();
|
|
worldserver.hasPhysicsEvent = org.bukkit.event.block.BlockPhysicsEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper - BlockPhysicsEvent
|
|
@@ -1647,6 +1650,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
|
|
this.profiler.pop();
|
|
worldserver.explosionDensityCache.clear(); // Paper - Optimize explosions
|
|
}
|
|
+ this.isIteratingOverLevels = false; // Paper - Throw exception on world create while being ticked
|
|
|
|
this.profiler.popPush("connection");
|
|
MinecraftTimings.connectionTimer.startTiming(); // Spigot // Paper
|
|
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
|
|
index b09c1359e4bd5f287b9ce3682fd7d9defa8f7e61..50a4b51ff9b05786ac763f8277bb67c247c04d31 100644
|
|
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
|
|
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
|
|
@@ -916,6 +916,11 @@ public final class CraftServer implements Server {
|
|
return new ArrayList<World>(this.worlds.values());
|
|
}
|
|
|
|
+ @Override
|
|
+ public boolean isTickingWorlds() {
|
|
+ return console.isIteratingOverLevels;
|
|
+ }
|
|
+
|
|
public DedicatedPlayerList getHandle() {
|
|
return this.playerList;
|
|
}
|
|
@@ -1178,6 +1183,7 @@ public final class CraftServer implements Server {
|
|
@Override
|
|
public World createWorld(WorldCreator creator) {
|
|
Preconditions.checkState(this.console.getAllLevels().iterator().hasNext(), "Cannot create additional worlds on STARTUP");
|
|
+ //Preconditions.checkState(!this.console.isIteratingOverLevels, "Cannot create a world while worlds are being ticked"); // Paper - Cat - Temp disable. We'll see how this goes.
|
|
Preconditions.checkArgument(creator != null, "WorldCreator cannot be null");
|
|
|
|
String name = creator.name();
|
|
@@ -1354,6 +1360,7 @@ public final class CraftServer implements Server {
|
|
|
|
@Override
|
|
public boolean unloadWorld(World world, boolean save) {
|
|
+ //Preconditions.checkState(!this.console.isIteratingOverLevels, "Cannot unload a world while worlds are being ticked"); // Paper - Cat - Temp disable. We'll see how this goes.
|
|
if (world == null) {
|
|
return false;
|
|
}
|