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Optimize Network Manager to not need synchronization

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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.
This commit is contained in:
Aikar
2020-05-06 05:22:03 -04:00
parent 30d007b163
commit fd5c98a9ef
141 changed files with 604 additions and 505 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
Spigot-Server-Patches/Implement-CraftBlockSoundGroup.patch
View File

@@ -6,7 +6,7 @@ Subject: [PATCH] Implement CraftBlockSoundGroup
diff --git a/src/main/java/com/destroystokyo/paper/block/CraftBlockSoundGroup.java b/src/main/java/com/destroystokyo/paper/block/CraftBlockSoundGroup.java
new file mode 100644
index 0000000000..99f99330d0
index 00000000000..99f99330d01
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/block/CraftBlockSoundGroup.java
@@ -0,0 +0,0 @@
@@ -49,7 +49,7 @@ index 0000000000..99f99330d0
+ }
+}
diff --git a/src/main/java/net/minecraft/server/IBlockData.java b/src/main/java/net/minecraft/server/IBlockData.java
index c1ff62aa52..de43881653 100644
index c1ff62aa525..de43881653f 100644
--- a/src/main/java/net/minecraft/server/IBlockData.java
+++ b/src/main/java/net/minecraft/server/IBlockData.java
@@ -0,0 +0,0 @@ public class IBlockData extends BlockDataAbstract<Block, IBlockData> implements
@@ -61,7 +61,7 @@ index c1ff62aa52..de43881653 100644
return this.getBlock().getStepSound(this);
}
diff --git a/src/main/java/net/minecraft/server/SoundEffectType.java b/src/main/java/net/minecraft/server/SoundEffectType.java
index b774d2d8d9..0184bf3fc9 100644
index b774d2d8d90..0184bf3fc9e 100644
--- a/src/main/java/net/minecraft/server/SoundEffectType.java
+++ b/src/main/java/net/minecraft/server/SoundEffectType.java
@@ -0,0 +0,0 @@ public class SoundEffectType {
@@ -96,7 +96,7 @@ index b774d2d8d9..0184bf3fc9 100644
return this.D;
}
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
index ef81c1d3a9..db446c25c4 100644
index ef81c1d3a96..db446c25c41 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
@@ -0,0 +0,0 @@ public class CraftBlock implements Block {