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https://github.com/PaperMC/Paper.git
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f37381ea8a
Removes synchronization from sending packets
Makes normal packet sends no longer need to be wrapped and queued like it use to work.
Adds more packet queue immunities on top of keep alive to let the following scenarios go out
without delay:
- Keep Alive
- Chat
- Kick
- All of the packets during the Player Joined World event
Hoping that latter one helps join timeout issues more too for slow connections.
Removes processing packet queue off of main thread
- for the few cases where it is allowed, order is not necessary nor
should it even be happening concurrently in first place (handshaking/login/status)
Ensures packets sent asynchronously are dispatched on main thread
This helps ensure safety for ProtocolLib as packet listeners
are commonly accessing world state. This will allow you to schedule
a packet to be sent async, but itll be dispatched sync for packet
listeners to process.
This should solve some deadlock risks
This may provide a decent performance improvement because thread synchronization incurs a cache reset
so by avoiding ever entering a synchronized block, we get to avoid that, and packet sending is a really
hot activity.
62 lines
2.7 KiB
Diff
62 lines
2.7 KiB
Diff
From 9b4c7accbb78fe4cee5494775b0e2b41c6d4790f Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sat, 11 Apr 2020 21:23:42 -0400
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Subject: [PATCH] Delay unsafe actions until after entity ticking is done
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This will help prevent many cases of unregistering entities during entity ticking
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diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
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index 9b5f24c262e..b3785775ecd 100644
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--- a/src/main/java/net/minecraft/server/WorldServer.java
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+++ b/src/main/java/net/minecraft/server/WorldServer.java
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@@ -60,6 +60,16 @@ public class WorldServer extends World {
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private final Queue<Entity> entitiesToAdd = Queues.newArrayDeque();
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public final List<EntityPlayer> players = Lists.newArrayList(); // Paper - private -> public
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boolean tickingEntities;
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+ // Paper start
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+ List<java.lang.Runnable> afterEntityTickingTasks = Lists.newArrayList();
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+ public void doIfNotEntityTicking(java.lang.Runnable run) {
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+ if (tickingEntities) {
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+ afterEntityTickingTasks.add(run);
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+ } else {
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+ run.run();
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+ }
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+ }
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+ // Paper end
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private final MinecraftServer server;
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private final WorldNBTStorage dataManager;
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public boolean savingDisabled;
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@@ -531,6 +541,16 @@ public class WorldServer extends World {
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timings.entityTick.stopTiming(); // Spigot
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this.tickingEntities = false;
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+ // Paper start
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+ for (java.lang.Runnable run : this.afterEntityTickingTasks) {
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+ try {
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+ run.run();
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+ } catch (Exception e) {
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+ LOGGER.error("Error in After Entity Ticking Task", e);
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+ }
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+ }
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+ this.afterEntityTickingTasks.clear();
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+ // Paper end
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this.getMinecraftServer().midTickLoadChunks(); // Paper
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try (co.aikar.timings.Timing ignored = this.timings.newEntities.startTiming()) { // Paper - timings
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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index eb7b48422e0..ac257d50dea 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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@@ -2473,7 +2473,7 @@ public class CraftWorld implements World {
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CompletableFuture<Chunk> ret = new CompletableFuture<>();
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this.world.getChunkProvider().getChunkAtAsynchronously(x, z, gen, (net.minecraft.server.Chunk chunk) -> {
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- ret.complete(chunk == null ? null : chunk.bukkitChunk);
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+ this.world.doIfNotEntityTicking(() -> ret.complete(chunk == null ? null : chunk.bukkitChunk));
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});
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return ret;
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--
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2.26.2
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