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01a13871de
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.
50 lines
2.7 KiB
Diff
50 lines
2.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: miclebrick <miclebrick@outlook.com>
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Date: Thu, 23 Aug 2018 11:45:32 -0400
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Subject: [PATCH] Optimize CraftBlockData Creation
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Avoids a hashmap lookup by cacheing a reference to the CraftBlockData
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and cloning it when one is needed.
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diff --git a/src/main/java/net/minecraft/world/level/block/state/BlockBehaviour.java b/src/main/java/net/minecraft/world/level/block/state/BlockBehaviour.java
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index 51ac731cf49e6d2cd574e48f26c4b151e9014826..61a792c5ccf3688d4f78c6e7461090f63a0cc26a 100644
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--- a/src/main/java/net/minecraft/world/level/block/state/BlockBehaviour.java
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+++ b/src/main/java/net/minecraft/world/level/block/state/BlockBehaviour.java
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@@ -696,6 +696,14 @@ public abstract class BlockBehaviour {
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this.offsetType = (BlockBehaviour.OffsetType) blockbase_info.offsetType.apply(this.asState());
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this.conditionallyFullOpaque = this.isOpaque() & this.isTransparentOnSomeFaces(); // Paper
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}
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+ // Paper start - impl cached craft block data, lazy load to fix issue with loading at the wrong time
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+ private org.bukkit.craftbukkit.block.data.CraftBlockData cachedCraftBlockData;
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+
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+ public org.bukkit.craftbukkit.block.data.CraftBlockData createCraftBlockData() {
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+ if (cachedCraftBlockData == null) cachedCraftBlockData = org.bukkit.craftbukkit.block.data.CraftBlockData.createData(asState());
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+ return (org.bukkit.craftbukkit.block.data.CraftBlockData) cachedCraftBlockData.clone();
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+ }
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+ // Paper end
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// Paper start
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protected boolean shapeExceedsCube = true;
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diff --git a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
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index 8a4dcbbfdc4ef9f7fcd1eb04db010f93f5f06933..514e1ab74cd24cfcf1dd031e69a8ebfaddf9d3dc 100644
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--- a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
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+++ b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
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@@ -539,7 +539,17 @@ public class CraftBlockData implements BlockData {
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return craft;
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}
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+ // Paper start - optimize creating BlockData to not need a map lookup
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+ static {
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+ // Initialize cached data for all IBlockData instances after registration
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+ Block.BLOCK_STATE_REGISTRY.iterator().forEachRemaining(BlockState::createCraftBlockData);
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+ }
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public static CraftBlockData fromData(BlockState data) {
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+ return data.createCraftBlockData();
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+ }
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+
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+ public static CraftBlockData createData(BlockState data) {
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+ // Paper end
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return CraftBlockData.MAP.getOrDefault(data.getBlock().getClass(), CraftBlockData::new).apply(data);
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}
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