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Code Issues Releases Activity

Updated Upstream (Paper)

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Upstream has released updates that appear to apply and compile correctly

Paper Changes:
PaperMC/Paper@3b45454 Port random ticking optimisation from Moonrise
PaperMC/Paper@77fcb29 Apply incremental player/level saving patch
PaperMC/Paper@9fd7710 Apply automatic regionfile header recalculation patch
PaperMC/Paper@b57b24d Do not try to stop main thread during watchdog shutdown
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Dreeam
2024-07-16 04:58:59 +08:00
parent 655a887c4c
commit c38b773dc4
105 changed files with 140 additions and 168 deletions
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206
patches/work/server/0033-Use-aging-cache-for-biome-temperatures.patch Normal file
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@@ -0,0 +1,206 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Martijn Muijsers <martijnmuijsers@live.nl>
Date: Wed, 23 Nov 2022 22:33:06 +0100
Subject: [PATCH] Use aging cache for biome temperatures
License: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)
Gale - https://galemc.org
This patch is based on the following patch:
"Use aging cache for biome temperatures"
By: Paul Sauve <paul@technove.co>
As part of: Airplane (https://github.com/TECHNOVE/Airplane)
Licensed under: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)
* Airplane copyright *
Airplane
Copyright (C) 2020 Technove LLC
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/main/java/gg/airplane/structs/Long2FloatAgingCache.java b/src/main/java/gg/airplane/structs/Long2FloatAgingCache.java
new file mode 100644
index 0000000000000000000000000000000000000000..f3835d6934f4d82980eb068c0b8c238f9c4bae2f
--- /dev/null
+++ b/src/main/java/gg/airplane/structs/Long2FloatAgingCache.java
@@ -0,0 +1,121 @@
+// Gale - Airplane - use aging cache for biome temperatures
+
+package gg.airplane.structs;
+
+import it.unimi.dsi.fastutil.HashCommon;
+
+/**
+ * A replacement for the cache used in Biome.
+ */
+public class Long2FloatAgingCache {
+
+ private static class AgingEntry {
+ private long data;
+ private float value;
+ private int uses = 0;
+ private int age = 0;
+
+ private AgingEntry(long data, float value) {
+ this.data = data;
+ this.value = value;
+ }
+
+ public void replace(long data, float flag) {
+ this.data = data;
+ this.value = flag;
+ }
+
+ public int getValue() {
+ return this.uses - (this.age >> 1); // age isn't as important as uses
+ }
+
+ public void incrementUses() {
+ this.uses = this.uses + 1 & Integer.MAX_VALUE;
+ }
+
+ public void incrementAge() {
+ this.age = this.age + 1 & Integer.MAX_VALUE;
+ }
+ }
+
+ private final AgingEntry[] entries;
+ private final int mask;
+ private final int maxDistance; // the most amount of entries to check for a value
+
+ public Long2FloatAgingCache(int size) {
+ int arraySize = HashCommon.nextPowerOfTwo(size);
+ this.entries = new AgingEntry[arraySize];
+ this.mask = arraySize - 1;
+ this.maxDistance = Math.min(arraySize, 4);
+ }
+
+ public float getValue(long data) {
+ AgingEntry curr;
+ int pos;
+
+ if ((curr = this.entries[pos = HashCommon.mix(HashCommon.long2int(data)) & this.mask]) == null) {
+ return Float.NaN;
+ } else if (data == curr.data) {
+ curr.incrementUses();
+ return curr.value;
+ }
+
+ int checked = 1; // start at 1 because we already checked the first spot above
+
+ while ((curr = this.entries[pos = (pos + 1) & this.mask]) != null) {
+ if (data == curr.data) {
+ curr.incrementUses();
+ return curr.value;
+ } else if (++checked >= this.maxDistance) {
+ break;
+ }
+ }
+
+ return Float.NaN;
+ }
+
+ public void putValue(long data, float value) {
+ AgingEntry curr;
+ int pos;
+
+ if ((curr = this.entries[pos = HashCommon.mix(HashCommon.long2int(data)) & this.mask]) == null) {
+ this.entries[pos] = new AgingEntry(data, value); // add
+ return;
+ } else if (data == curr.data) {
+ curr.incrementUses();
+ return;
+ }
+
+ int checked = 1; // start at 1 because we already checked the first spot above
+
+ while ((curr = this.entries[pos = (pos + 1) & this.mask]) != null) {
+ if (data == curr.data) {
+ curr.incrementUses();
+ return;
+ } else if (++checked >= this.maxDistance) {
+ this.forceAdd(data, value);
+ return;
+ }
+ }
+
+ this.entries[pos] = new AgingEntry(data, value); // add
+ }
+
+ private void forceAdd(long data, float value) {
+ int expectedPos = HashCommon.mix(HashCommon.long2int(data)) & this.mask;
+ AgingEntry entryToRemove = this.entries[expectedPos];
+
+ for (int i = expectedPos + 1; i < expectedPos + this.maxDistance; i++) {
+ int pos = i & this.mask;
+ AgingEntry entry = this.entries[pos];
+ if (entry.getValue() < entryToRemove.getValue()) {
+ entryToRemove = entry;
+ }
+
+ entry.incrementAge(); // use this as a mechanism to age the other entries
+ }
+
+ // remove the least used/oldest entry
+ entryToRemove.replace(data, value);
+ }
+}
diff --git a/src/main/java/net/minecraft/world/level/biome/Biome.java b/src/main/java/net/minecraft/world/level/biome/Biome.java
index 15f82c9a1ce1fef2e951d1b3c7a65e64b82061ea..115a9adac2131dd875d4bf1b6bc998125a96008d 100644
--- a/src/main/java/net/minecraft/world/level/biome/Biome.java
+++ b/src/main/java/net/minecraft/world/level/biome/Biome.java
@@ -63,13 +63,18 @@ public final class Biome {
private final BiomeGenerationSettings generationSettings;
private final MobSpawnSettings mobSettings;
private final BiomeSpecialEffects specialEffects;
- private final ThreadLocal<Long2FloatLinkedOpenHashMap> temperatureCache = ThreadLocal.withInitial(() -> Util.make(() -> {
+ // Gale start - Airplane - use aging cache for biome temperatures - use our cache
+ private final ThreadLocal<gg.airplane.structs.Long2FloatAgingCache> temperatureCache = ThreadLocal.withInitial(() -> Util.make(() -> {
+ /*
Long2FloatLinkedOpenHashMap long2FloatLinkedOpenHashMap = new Long2FloatLinkedOpenHashMap(1024, 0.25F) {
protected void rehash(int i) {
}
};
long2FloatLinkedOpenHashMap.defaultReturnValue(Float.NaN);
return long2FloatLinkedOpenHashMap;
+ */
+ return new gg.airplane.structs.Long2FloatAgingCache(TEMPERATURE_CACHE_SIZE);
+ // Gale end - Airplane - use aging cache for biome temperatures - use our cache
}));
Biome(Biome.ClimateSettings weather, BiomeSpecialEffects effects, BiomeGenerationSettings generationSettings, MobSpawnSettings spawnSettings) {
@@ -112,17 +117,15 @@ public final class Biome {
@Deprecated
public float getTemperature(BlockPos blockPos) {
long l = blockPos.asLong();
- Long2FloatLinkedOpenHashMap long2FloatLinkedOpenHashMap = this.temperatureCache.get();
- float f = long2FloatLinkedOpenHashMap.get(l);
+ // Gale start - Airplane - use aging cache for biome temperatures
+ gg.airplane.structs.Long2FloatAgingCache cache = this.temperatureCache.get();
+ float f = cache.getValue(l);
if (!Float.isNaN(f)) {
return f;
} else {
float g = this.getHeightAdjustedTemperature(blockPos);
- if (long2FloatLinkedOpenHashMap.size() == 1024) {
- long2FloatLinkedOpenHashMap.removeFirstFloat();
- }
-
- long2FloatLinkedOpenHashMap.put(l, g);
+ cache.putValue(l, g);
+ // Gale end - Airplane - use aging cache for biome temperatures
return g;
}
}