PaperMC/patches/server/0426-Inventory-getHolder-method-without-block-snapshot.patch
Spottedleaf 01a13871de
Rewrite chunk system (#8177)
Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.
2022-09-26 01:02:51 -07:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Phoenix616 <mail@moep.tv>
Date: Wed, 10 Jun 2020 23:55:15 +0100
Subject: [PATCH] Inventory getHolder method without block snapshot
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventory.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventory.java
index 3796f8b122ad981b6faacd2afcaf3696314aad6b..b17dab9e5c06d8789553b104602d7da35d926dd1 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventory.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventory.java
@@ -532,6 +532,13 @@ public class CraftInventory implements Inventory {
return this.inventory.getOwner();
}
+ // Paper start - getHolder without snapshot
+ @Override
+ public InventoryHolder getHolder(boolean useSnapshot) {
+ return inventory instanceof net.minecraft.world.level.block.entity.BlockEntity ? ((net.minecraft.world.level.block.entity.BlockEntity) inventory).getOwner(useSnapshot) : getHolder();
+ }
+ // Paper end
+
@Override
public int getMaxStackSize() {
return this.inventory.getMaxStackSize();
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryDoubleChest.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryDoubleChest.java
index 01d425d359f2d6d87b6c01b435a9cfcfe11caa20..4707a651dc80086efa852bcfba38a534e7f1f3d0 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryDoubleChest.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryDoubleChest.java
@@ -64,6 +64,13 @@ public class CraftInventoryDoubleChest extends CraftInventory implements DoubleC
return new DoubleChest(this);
}
+ // Paper start - getHolder without snapshot
+ @Override
+ public DoubleChest getHolder(boolean useSnapshot) {
+ return getHolder();
+ }
+ // Paper end
+
@Override
public Location getLocation() {
return this.getLeftSide().getLocation().add(this.getRightSide().getLocation()).multiply(0.5);