geforkt von Mirrors/Paper
c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
21 Zeilen
1.3 KiB
Diff
21 Zeilen
1.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Shane Freeder <theboyetronic@gmail.com>
|
|
Date: Mon, 12 Jul 2021 12:28:29 +0100
|
|
Subject: [PATCH] Use a CHM for StructureTemplate.Pallete cache
|
|
|
|
fixes a CME due to this collection being shared across threads
|
|
|
|
diff --git a/src/main/java/net/minecraft/world/level/levelgen/structure/templatesystem/StructureTemplate.java b/src/main/java/net/minecraft/world/level/levelgen/structure/templatesystem/StructureTemplate.java
|
|
index 02b493435509f7a84a2c26050ca0c732ecf00ca0..33564e62e3181d28b18a957e28b8ec5152d8339f 100644
|
|
--- a/src/main/java/net/minecraft/world/level/levelgen/structure/templatesystem/StructureTemplate.java
|
|
+++ b/src/main/java/net/minecraft/world/level/levelgen/structure/templatesystem/StructureTemplate.java
|
|
@@ -859,7 +859,7 @@ public class StructureTemplate {
|
|
public static final class Palette {
|
|
|
|
private final List<StructureTemplate.StructureBlockInfo> blocks;
|
|
- private final Map<Block, List<StructureTemplate.StructureBlockInfo>> cache = Maps.newHashMap();
|
|
+ private final Map<Block, List<StructureTemplate.StructureBlockInfo>> cache = Maps.newConcurrentMap(); // Paper - Fix CME due to this collection being shared across threads
|
|
|
|
Palette(List<StructureTemplate.StructureBlockInfo> infos) {
|
|
this.blocks = infos;
|