R3944Realms/ModernFix
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Drop chunk status transition patch from paper_chunk_patches

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Research by ishland suggests that vanilla already does this, at least
since 1.18
This commit is contained in:
embeddedt 2023-07-12 10:46:28 -04:00
parent 8067cb6e65
commit aff4e0c2d0
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GPG Key ID: A69433EC199B5613
3 changed files with 0 additions and 103 deletions
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61
common/src/main/java/org/embeddedt/modernfix/common/mixin/bugfix/paper_chunk_patches/ChunkHolderMixin.java
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@ -1,61 +0,0 @@
package org.embeddedt.modernfix.common.mixin.bugfix.paper_chunk_patches;
import com.mojang.datafixers.util.Either;
import net.minecraft.server.level.ChunkHolder;
import net.minecraft.world.level.chunk.ChunkAccess;
import net.minecraft.world.level.chunk.ChunkStatus;
import org.embeddedt.modernfix.duck.IPaperChunkHolder;
import org.spongepowered.asm.mixin.Final;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Shadow;
import java.util.List;
import java.util.concurrent.CompletableFuture;
@Mixin(ChunkHolder.class)
public abstract class ChunkHolderMixin implements IPaperChunkHolder {
@Shadow public abstract CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>> getFutureIfPresentUnchecked(ChunkStatus arg);
@Shadow @Final private static List<ChunkStatus> CHUNK_STATUSES;
public ChunkStatus mfix$getChunkHolderStatus() {
for (ChunkStatus curr = ChunkStatus.FULL, next = curr.getParent(); curr != next; curr = next, next = next.getParent()) {
CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>> future = this.getFutureIfPresentUnchecked(curr);
Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure> either = future.getNow(null);
if (either == null || !either.left().isPresent()) {
continue;
}
return curr;
}
return null;
}
public ChunkAccess mfix$getAvailableChunkNow() {
// TODO can we just getStatusFuture(EMPTY)?
for (ChunkStatus curr = ChunkStatus.FULL, next = curr.getParent(); curr != next; curr = next, next = next.getParent()) {
CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>> future = this.getFutureIfPresentUnchecked(curr);
Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure> either = future.getNow(null);
if (either == null || !either.left().isPresent()) {
continue;
}
return either.left().get();
}
return null;
}
private static ChunkStatus mfix$getNextStatus(ChunkStatus status) {
if (status == ChunkStatus.FULL) {
return status;
}
return CHUNK_STATUSES.get(status.getIndex() + 1);
}
@Override
public boolean mfix$canAdvanceStatus() {
ChunkStatus status = mfix$getChunkHolderStatus();
ChunkAccess chunk = mfix$getAvailableChunkNow();
return chunk != null && (status == null || chunk.getStatus().isOrAfter(mfix$getNextStatus(status)));
}
}

37
common/src/main/java/org/embeddedt/modernfix/common/mixin/bugfix/paper_chunk_patches/ChunkMapMixin.java
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@ -1,7 +1,6 @@
package org.embeddedt.modernfix.common.mixin.bugfix.paper_chunk_patches;
import com.mojang.datafixers.util.Either;
import net.minecraft.server.MinecraftServer;
import net.minecraft.server.level.*;
import net.minecraft.server.level.progress.ChunkProgressListener;
import net.minecraft.util.thread.BlockableEventLoop;
@ -9,21 +8,17 @@ import net.minecraft.world.level.ChunkPos;
import net.minecraft.world.level.chunk.ChunkAccess;
import net.minecraft.world.level.chunk.ChunkStatus;
import net.minecraft.world.level.levelgen.structure.templatesystem.StructureManager;
import org.embeddedt.modernfix.duck.IPaperChunkHolder;
import org.spongepowered.asm.mixin.Final;
import org.spongepowered.asm.mixin.Mixin;
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.ModifyArg;
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.Optional;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Executor;
import java.util.function.Function;
@Mixin(ChunkMap.class)
@ -41,19 +36,6 @@ public abstract class ChunkMapMixin {
@Shadow protected abstract CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>> scheduleChunkGeneration(ChunkHolder chunkHolder, ChunkStatus chunkStatus);
private Executor mainInvokingExecutor;
@Inject(method = "<init>", at = @At("RETURN"))
private void setup(CallbackInfo ci) {
MinecraftServer server = this.level.getServer();
this.mainInvokingExecutor = (runnable) -> {
if(server.isSameThread())
runnable.run();
else
this.mainThreadExecutor.execute(runnable);
};
}
/* https://github.com/PaperMC/Paper/blob/ver/1.17.1/patches/server/0752-Fix-chunks-refusing-to-unload-at-low-TPS.patch */
@ModifyArg(method = "prepareAccessibleChunk", at = @At(value = "INVOKE", target = "Ljava/util/concurrent/CompletableFuture;thenApplyAsync(Ljava/util/function/Function;Ljava/util/concurrent/Executor;)Ljava/util/concurrent/CompletableFuture;"), index = 1)
@ -61,25 +43,6 @@ public abstract class ChunkMapMixin {
return this.mainThreadExecutor;
}
/* https://github.com/PaperMC/Paper/blob/master/patches/removed/1.19.2-legacy-chunksystem/0482-Improve-Chunk-Status-Transition-Speed.patch */
@ModifyArg(method = "prepareEntityTickingChunk", at = @At(value = "INVOKE", target = "Ljava/util/concurrent/CompletableFuture;thenApplyAsync(Ljava/util/function/Function;Ljava/util/concurrent/Executor;)Ljava/util/concurrent/CompletableFuture;"), index = 1)
private Executor useMainInvokingExecutor(Executor executor) {
return this.mainInvokingExecutor;
}
@SuppressWarnings({"rawtypes", "unchecked"})
@Redirect(method = "scheduleChunkGeneration", at = @At(value = "INVOKE", target = "Ljava/util/concurrent/CompletableFuture;thenComposeAsync(Ljava/util/function/Function;Ljava/util/concurrent/Executor;)Ljava/util/concurrent/CompletableFuture;"))
private CompletableFuture skipWorkerIfPossible(CompletableFuture inputFuture, Function function, Executor executor, ChunkHolder holder) {
Executor targetExecutor = (runnable) -> {
if(((IPaperChunkHolder)holder).mfix$canAdvanceStatus()) {
this.mainInvokingExecutor.execute(runnable);
return;
}
executor.execute(runnable);
};
return inputFuture.thenComposeAsync(function, targetExecutor);
}
/**
* @author embeddedt
* @reason revert 1.17 chunk system changes, significantly reduces time and RAM needed to load chunks

5
common/src/main/java/org/embeddedt/modernfix/duck/IPaperChunkHolder.java
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@ -1,5 +0,0 @@
package org.embeddedt.modernfix.duck;
public interface IPaperChunkHolder {
boolean mfix$canAdvanceStatus();
}