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https://github.com/PaperMC/Paper.git
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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.
134 lines
6.6 KiB
Diff
134 lines
6.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Sun, 31 Oct 2021 21:34:00 -0700
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Subject: [PATCH] Async catch modifications to critical entity state
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These used to be here from Spigot, but were dropped with 1.17.
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Now in 1.17, this state is _even more_ critical than it was before,
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so these must exist to catch stupid plugins.
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diff --git a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
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index ab7eadf2fc4c4598fa89068332eaaf9a8e0a100f..e738f058af577150445ac4ef7a0bcbf98e3ba52e 100644
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--- a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
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+++ b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
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@@ -77,6 +77,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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}
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private boolean addEntityUuid(T entity) {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity add by UUID"); // Paper
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if (!this.knownUuids.add(entity.getUUID())) {
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PersistentEntitySectionManager.LOGGER.warn("UUID of added entity already exists: {}", entity);
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return false;
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@@ -90,6 +91,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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}
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private boolean addEntity(T entity, boolean existing) {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity add"); // Paper
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// Paper start - chunk system hooks
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if (existing) {
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// I don't want to know why this is a generic type.
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@@ -145,19 +147,23 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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}
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void startTicking(T entity) {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity start ticking"); // Paper
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this.callbacks.onTickingStart(entity);
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}
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void stopTicking(T entity) {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity stop ticking"); // Paper
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this.callbacks.onTickingEnd(entity);
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}
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void startTracking(T entity) {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity start tracking"); // Paper
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this.visibleEntityStorage.add(entity);
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this.callbacks.onTrackingStart(entity);
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}
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void stopTracking(T entity) {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity stop tracking"); // Paper
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this.callbacks.onTrackingEnd(entity);
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this.visibleEntityStorage.remove(entity);
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}
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@@ -169,6 +175,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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}
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public void updateChunkStatus(ChunkPos chunkPos, Visibility trackingStatus) {
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+ org.spigotmc.AsyncCatcher.catchOp("Update chunk status"); // Paper
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long i = chunkPos.toLong();
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if (trackingStatus == Visibility.HIDDEN) {
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@@ -213,6 +220,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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}
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public void ensureChunkQueuedForLoad(long chunkPos) {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity chunk save"); // Paper
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PersistentEntitySectionManager.ChunkLoadStatus persistententitysectionmanager_b = (PersistentEntitySectionManager.ChunkLoadStatus) this.chunkLoadStatuses.get(chunkPos);
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if (persistententitysectionmanager_b == PersistentEntitySectionManager.ChunkLoadStatus.FRESH) {
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@@ -257,6 +265,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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}
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private void requestChunkLoad(long chunkPos) {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity chunk load request"); // Paper
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this.chunkLoadStatuses.put(chunkPos, PersistentEntitySectionManager.ChunkLoadStatus.PENDING);
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ChunkPos chunkcoordintpair = new ChunkPos(chunkPos);
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CompletableFuture completablefuture = this.permanentStorage.loadEntities(chunkcoordintpair);
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@@ -270,6 +279,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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}
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private boolean processChunkUnload(long chunkPos) {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity chunk unload process"); // Paper
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boolean flag = this.storeChunkSections(chunkPos, (entityaccess) -> {
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entityaccess.getPassengersAndSelf().forEach(this::unloadEntity);
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}, true); // CraftBukkit - add boolean for event call
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@@ -294,6 +304,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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}
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private void processPendingLoads() {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity chunk process pending loads"); // Paper
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ChunkEntities<T> chunkentities; // CraftBukkit - decompile error
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while ((chunkentities = (ChunkEntities) this.loadingInbox.poll()) != null) {
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@@ -310,6 +321,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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}
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public void tick() {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity manager tick"); // Paper
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this.processPendingLoads();
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this.processUnloads();
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}
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@@ -330,6 +342,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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}
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public void autoSave() {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity manager autosave"); // Paper
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this.getAllChunksToSave().forEach((java.util.function.LongConsumer) (i) -> { // CraftBukkit - decompile error
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boolean flag = this.chunkVisibility.get(i) == Visibility.HIDDEN;
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@@ -344,6 +357,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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}
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public void saveAll() {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity manager save"); // Paper
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LongSet longset = this.getAllChunksToSave();
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while (!longset.isEmpty()) {
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@@ -446,6 +460,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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long i = SectionPos.asLong(blockposition);
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if (i != this.currentSectionKey) {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity move"); // Paper
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Visibility visibility = this.currentSection.getStatus();
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if (!this.currentSection.remove(this.entity)) {
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@@ -500,6 +515,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
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@Override
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public void onRemove(Entity.RemovalReason reason) {
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+ org.spigotmc.AsyncCatcher.catchOp("Entity remove"); // Paper
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if (!this.currentSection.remove(this.entity)) {
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PersistentEntitySectionManager.LOGGER.warn("Entity {} wasn't found in section {} (destroying due to {})", new Object[]{this.entity, SectionPos.of(this.currentSectionKey), reason});
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}
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