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fd5c98a9ef
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.
52 lines
No EOL
2.3 KiB
Diff
52 lines
No EOL
2.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Shane Freeder <theboyetronic@gmail.com>
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Date: Wed, 29 May 2019 04:01:22 +0100
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Subject: [PATCH] ChunkMapDistance CME
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diff --git a/src/main/java/net/minecraft/server/ChunkMapDistance.java b/src/main/java/net/minecraft/server/ChunkMapDistance.java
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index ae661297774..0244768f76d 100644
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--- a/src/main/java/net/minecraft/server/ChunkMapDistance.java
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+++ b/src/main/java/net/minecraft/server/ChunkMapDistance.java
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@@ -0,0 +0,0 @@ public abstract class ChunkMapDistance {
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private final ChunkMapDistance.a e = new ChunkMapDistance.a();
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private final ChunkMapDistance.b f = new ChunkMapDistance.b(8);
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private final ChunkMapDistance.c g = new ChunkMapDistance.c(33);
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- private final Set<PlayerChunk> pendingChunkUpdates = Sets.newHashSet();
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+ private final java.util.Queue<PlayerChunk> pendingChunkUpdates = new java.util.LinkedList<>(); // PAIL pendingChunkUpdates // Paper - use a queue
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private final ChunkTaskQueueSorter i;
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private final Mailbox<ChunkTaskQueueSorter.a<Runnable>> j;
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private final Mailbox<ChunkTaskQueueSorter.b> k;
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@@ -0,0 +0,0 @@ public abstract class ChunkMapDistance {
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;
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}
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+ // Paper start
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if (!this.pendingChunkUpdates.isEmpty()) {
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- // CraftBukkit start
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- // Iterate pending chunk updates with protection against concurrent modification exceptions
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- java.util.Iterator<PlayerChunk> iter = this.pendingChunkUpdates.iterator();
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- int expectedSize = this.pendingChunkUpdates.size();
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- do {
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- PlayerChunk playerchunk = iter.next();
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- iter.remove();
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- expectedSize--;
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-
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- playerchunk.a(playerchunkmap);
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-
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- // Reset iterator if set was modified using add()
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- if (this.pendingChunkUpdates.size() != expectedSize) {
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- expectedSize = this.pendingChunkUpdates.size();
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- iter = this.pendingChunkUpdates.iterator();
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- }
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- } while (iter.hasNext());
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- // CraftBukkit end
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-
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+ while(!this.pendingChunkUpdates.isEmpty()) {
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+ this.pendingChunkUpdates.remove().a(playerchunkmap);
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+ }
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+ // Paper end
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return true;
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} else {
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if (!this.l.isEmpty()) {
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--
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