PaperMC/Spigot-Server-Patches/Prevent-opening-inventories-when-frozen.patch
Aikar fd5c98a9ef Optimize Network Manager to not need synchronization
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.
2020-05-06 05:22:03 -04:00

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3.6 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Mon, 13 Apr 2020 07:31:44 +0100
Subject: [PATCH] Prevent opening inventories when frozen
diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index d51af68a920..f453ccdb020 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -0,0 +0,0 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
containerUpdateDelay = world.paperConfig.containerUpdateTickRate;
}
// Paper end
- if (!this.world.isClientSide && !this.activeContainer.canUse(this)) {
+ if (!this.world.isClientSide && this.activeContainer != this.defaultContainer && (isFrozen() || !this.activeContainer.canUse(this))) { // Paper - auto close while frozen
this.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.CANT_USE); // Paper
this.activeContainer = this.defaultContainer;
}
@@ -0,0 +0,0 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
} else {
// CraftBukkit start
this.activeContainer = container;
- this.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, container.getType(), container.getTitle()));
+ if (!isFrozen()) this.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, container.getType(), container.getTitle())); // Paper
// CraftBukkit end
container.addSlotListener(this);
return OptionalInt.of(this.containerCounter);
@@ -0,0 +0,0 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
}
@Override
- protected boolean isFrozen() {
+ public boolean isFrozen() { // Paper - protected > public
return super.isFrozen() || (this.playerConnection != null && this.playerConnection.isDisconnected()); // Paper
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
index a6d75c0e07a..a5e9fc90ffa 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
@@ -0,0 +0,0 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
String title = container.getBukkitView().getTitle();
- player.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, windowType, new ChatComponentText(title)));
+ if (!player.isFrozen()) player.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, windowType, new ChatComponentText(title))); // Paper
getHandle().activeContainer = container;
getHandle().activeContainer.addSlotListener(player);
}
@@ -0,0 +0,0 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
// Now open the window
Containers<?> windowType = CraftContainer.getNotchInventoryType(inventory.getTopInventory());
String title = inventory.getTitle();
- player.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, windowType, new ChatComponentText(title)));
+ if (!player.isFrozen()) player.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, windowType, new ChatComponentText(title))); // Paper
player.activeContainer = container;
player.activeContainer.addSlotListener(player);
}
--