R3944Realms/ModernFix-fix
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Merge 1.19.2 into 1.20

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embeddedt 2024-03-20 21:38:15 -04:00
commit 3ad7a8ce9d
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8 changed files with 297 additions and 0 deletions
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28
common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/ticking_chunk_alloc/BatMixin.java Normal file
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@ -0,0 +1,28 @@
package org.embeddedt.modernfix.common.mixin.perf.ticking_chunk_alloc;
import net.minecraft.world.entity.ambient.Bat;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Redirect;
import java.time.LocalDate;
@Mixin(value = Bat.class, priority = 1200)
public class BatMixin {
private static long mfix$lastQueriedTime = -1L;
private static LocalDate mfix$lastQueriedDate = null;
/**
* @author embeddedt
* @reason avoid excessive allocations from continuously querying the date, only get a new date once every 30 seconds
*/
@Redirect(method = "isHalloween", at = @At(value = "INVOKE", target = "Ljava/time/LocalDate;now()Ljava/time/LocalDate;"), require = 0)
private static LocalDate useCachedLocalDate() {
LocalDate date = mfix$lastQueriedDate;
if(date == null || Math.abs(System.currentTimeMillis() - mfix$lastQueriedTime) > 30000) {
mfix$lastQueriedDate = date = LocalDate.now();
mfix$lastQueriedTime = System.currentTimeMillis();
}
return date;
}
}

26
common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/ticking_chunk_alloc/ChunkGeneratorMixin.java Normal file
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package org.embeddedt.modernfix.common.mixin.perf.ticking_chunk_alloc;
import net.minecraft.world.level.chunk.ChunkGenerator;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Redirect;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
@Mixin(ChunkGenerator.class)
public class ChunkGeneratorMixin {
/**
* @author embeddedt
* @reason Avoid allocation if the chunk contains no structures
*/
@Redirect(method = "getMobsAt", at = @At(value = "INVOKE", target = "Ljava/util/Map;entrySet()Ljava/util/Set;"), require = 0)
private Set<?> avoidSetAllocation(Map<?, ?> instance) {
if(instance.isEmpty()) {
return Collections.emptySet();
} else {
return instance.entrySet();
}
}
}

40
common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/ticking_chunk_alloc/ChunkHolderMixin.java Normal file
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@ -0,0 +1,40 @@
package org.embeddedt.modernfix.common.mixin.perf.ticking_chunk_alloc;
import com.mojang.datafixers.util.Either;
import net.minecraft.server.level.ChunkHolder;
import net.minecraft.world.level.chunk.LevelChunk;
import org.embeddedt.modernfix.util.EitherUtil;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Overwrite;
import org.spongepowered.asm.mixin.Shadow;
import java.util.concurrent.CompletableFuture;
@Mixin(value = ChunkHolder.class, priority = 500)
public abstract class ChunkHolderMixin {
@Shadow public abstract CompletableFuture<Either<LevelChunk, ChunkHolder.ChunkLoadingFailure>> getTickingChunkFuture();
@Shadow public abstract CompletableFuture<Either<LevelChunk, ChunkHolder.ChunkLoadingFailure>> getFullChunkFuture();
/**
* @author embeddedt
* @reason avoid Optional allocation
*/
@Overwrite
public LevelChunk getTickingChunk() {
CompletableFuture<Either<LevelChunk, ChunkHolder.ChunkLoadingFailure>> completableFuture = this.getTickingChunkFuture();
Either<LevelChunk, ChunkHolder.ChunkLoadingFailure> either = completableFuture.getNow(null);
return either == null ? null : EitherUtil.leftOrNull(either);
}
/**
* @author embeddedt
* @reason avoid Optional allocation
*/
@Overwrite
public LevelChunk getFullChunk() {
CompletableFuture<Either<LevelChunk, ChunkHolder.ChunkLoadingFailure>> completableFuture = this.getFullChunkFuture();
Either<LevelChunk, ChunkHolder.ChunkLoadingFailure> either = completableFuture.getNow(null);
return either == null ? null : EitherUtil.leftOrNull(either);
}
}

52
common/src/main/java/org/embeddedt/modernfix/util/EitherUtil.java Normal file
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@ -0,0 +1,52 @@
package org.embeddedt.modernfix.util;
import com.mojang.datafixers.util.Either;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.reflect.Field;
public class EitherUtil {
private static final Class<?> LEFT, RIGHT;
private static final MethodHandle LEFT_VAL, RIGHT_VAL;
static {
try {
LEFT = Class.forName("com.mojang.datafixers.util.Either$Left");
RIGHT = Class.forName("com.mojang.datafixers.util.Either$Right");
Field lvalue = LEFT.getDeclaredField("value");
lvalue.setAccessible(true);
Field rvalue = RIGHT.getDeclaredField("value");
rvalue.setAccessible(true);
LEFT_VAL = MethodHandles.publicLookup().unreflectGetter(lvalue).asType(MethodType.methodType(Object.class, Either.class));
RIGHT_VAL = MethodHandles.publicLookup().unreflectGetter(rvalue).asType(MethodType.methodType(Object.class, Either.class));
} catch(ReflectiveOperationException e) {
throw new AssertionError("Failed to hook DFU Either", e);
}
}
@SuppressWarnings("unchecked")
public static <L, R> L leftOrNull(Either<L, R> either) {
if(either.getClass() == LEFT) {
try {
return (L)LEFT_VAL.invokeExact(either);
} catch(Throwable e) {
throw new RuntimeException(e);
}
}
return null;
}
@SuppressWarnings("unchecked")
public static <L, R> R rightOrNull(Either<L, R> either) {
if(either.getClass() == RIGHT) {
try {
return (R)RIGHT_VAL.invokeExact(either);
} catch(Throwable e) {
throw new RuntimeException(e);
}
}
return null;
}
}

56
forge/src/main/java/org/embeddedt/modernfix/forge/config/NightConfigWatchThrottler.java Normal file
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@ -0,0 +1,56 @@
package org.embeddedt.modernfix.forge.config;
import com.electronwill.nightconfig.core.file.FileWatcher;
import com.google.common.collect.ForwardingCollection;
import com.google.common.collect.ForwardingMap;
import net.minecraftforge.fml.util.ObfuscationReflectionHelper;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.LockSupport;
/**
* Throttle NightConfig's file watching. There are reports of this consuming excessive CPU time
* (<a href="https://github.com/TheElectronWill/night-config/pull/144">example</a>) and the spammed iterator calls
* end up being 10% of allocations when testing in a dev environment.
*/
public class NightConfigWatchThrottler {
private static final long DELAY = TimeUnit.MILLISECONDS.toNanos(1000);
@SuppressWarnings("rawtypes")
public static void throttle() {
Map watchedDirs = ObfuscationReflectionHelper.getPrivateValue(FileWatcher.class, FileWatcher.defaultInstance(), "watchedDirs");
ObfuscationReflectionHelper.setPrivateValue(FileWatcher.class, FileWatcher.defaultInstance(), new ForwardingMap() {
@Override
protected Map delegate() {
return watchedDirs;
}
private Collection cachedValues;
@Override
public Collection values() {
if(cachedValues == null) {
Collection values = super.values();
cachedValues = new ForwardingCollection() {
@Override
protected Collection delegate() {
return values;
}
@Override
public Iterator iterator() {
// iterator() is called at the beginning of each iteration of the watch loop,
// so it is a good spot to inject the delay.
LockSupport.parkNanos(DELAY);
return super.iterator();
}
};
}
return cachedValues;
}
}, "watchedDirs");
}
}

25
forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/potential_spawns_alloc/ForgeEventFactoryMixin.java Normal file
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package org.embeddedt.modernfix.forge.mixin.perf.potential_spawns_alloc;
import net.minecraft.core.BlockPos;
import net.minecraft.util.random.WeightedRandomList;
import net.minecraft.world.entity.MobCategory;
import net.minecraft.world.level.LevelAccessor;
import net.minecraft.world.level.biome.MobSpawnSettings;
import net.minecraftforge.event.ForgeEventFactory;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Redirect;
import java.util.List;
@Mixin(ForgeEventFactory.class)
public class ForgeEventFactoryMixin {
@Redirect(method = "getPotentialSpawns", at = @At(value = "INVOKE", target = "Lnet/minecraft/util/random/WeightedRandomList;create(Ljava/util/List;)Lnet/minecraft/util/random/WeightedRandomList;"))
private static WeightedRandomList<MobSpawnSettings.SpawnerData> reuseOldList(List<MobSpawnSettings.SpawnerData> items, LevelAccessor level, MobCategory category, BlockPos pos, WeightedRandomList<MobSpawnSettings.SpawnerData> oldList) {
// Our patched version of PotentialSpawns will return the same list as unwrap() if no one mutated the list
if(items == oldList.unwrap()) {
return oldList;
}
return WeightedRandomList.create(items);
}
}

68
forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/potential_spawns_alloc/PotentialSpawnsMixin.java Normal file
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@ -0,0 +1,68 @@
package org.embeddedt.modernfix.forge.mixin.perf.potential_spawns_alloc;
import net.minecraft.core.BlockPos;
import net.minecraft.util.random.WeightedRandomList;
import net.minecraft.world.entity.MobCategory;
import net.minecraft.world.level.LevelAccessor;
import net.minecraft.world.level.biome.MobSpawnSettings;
import net.minecraftforge.event.level.LevelEvent;
import org.spongepowered.asm.mixin.Final;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Mutable;
import org.spongepowered.asm.mixin.Shadow;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Inject;
import org.spongepowered.asm.mixin.injection.Redirect;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
@Mixin(LevelEvent.PotentialSpawns.class)
public class PotentialSpawnsMixin {
@Shadow(remap = false) @Final @Mutable private List<MobSpawnSettings.SpawnerData> view;
@Shadow(remap = false) @Final @Mutable private List<MobSpawnSettings.SpawnerData> list;
private static final ArrayList<MobSpawnSettings.SpawnerData> SENTINEL = new ArrayList<>();
@Redirect(method = "<init>", at = @At(value = "NEW", target = "java/util/ArrayList", ordinal = 1))
private ArrayList<?> avoidListAlloc1() {
return SENTINEL;
}
@Redirect(method = "<init>", at = @At(value = "NEW", target = "java/util/ArrayList", ordinal = 0))
private ArrayList<?> avoidListAlloc2(Collection c) {
return SENTINEL;
}
@Redirect(method = "<init>", at = @At(value = "INVOKE", target = "Ljava/util/Collections;unmodifiableList(Ljava/util/List;)Ljava/util/List;"))
private List<?> avoidListAlloc3(List<?> l) {
return null;
}
@Inject(method = "<init>", at = @At("RETURN"))
private void initializeSmartLists(LevelAccessor level, MobCategory category, BlockPos pos, WeightedRandomList<MobSpawnSettings.SpawnerData> oldList, CallbackInfo ci) {
this.view = oldList.unwrap();
this.list = null;
}
private void mfix$populateList() {
if(this.list == null) {
this.list = new ArrayList<>(this.view);
this.view = Collections.unmodifiableList(this.list);
}
}
@Inject(method = {"addSpawnerData" }, at = @At("HEAD"), remap = false)
private void populateList(MobSpawnSettings.SpawnerData data, CallbackInfo ci) {
mfix$populateList();
}
@Inject(method = {"removeSpawnerData" }, at = @At("HEAD"), remap = false)
private void populateList(MobSpawnSettings.SpawnerData data, CallbackInfoReturnable<Boolean> cir) {
mfix$populateList();
}
}

2
forge/src/main/java/org/embeddedt/modernfix/platform/forge/ModernFixPlatformHooksImpl.java
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@ -25,6 +25,7 @@ import org.embeddedt.modernfix.core.ModernFixMixinPlugin;
import org.embeddedt.modernfix.forge.classloading.ATInjector;
import org.embeddedt.modernfix.forge.classloading.FastAccessTransformerList;
import org.embeddedt.modernfix.forge.config.NightConfigFixer;
import org.embeddedt.modernfix.forge.config.NightConfigWatchThrottler;
import org.embeddedt.modernfix.forge.init.ModernFixForge;
import org.embeddedt.modernfix.forge.packet.PacketHandler;
import org.embeddedt.modernfix.platform.ModernFixPlatformHooks;
@ -112,6 +113,7 @@ public class ModernFixPlatformHooksImpl implements ModernFixPlatformHooks {
}
NightConfigFixer.monitorFileWatcher();
NightConfigWatchThrottler.throttle();
}
public void applyASMTransformers(String mixinClassName, ClassNode targetClass) {