mirror of
https://github.com/PaperMC/Paper.git
synced 2024-11-30 06:24:06 +01:00
249 lines
13 KiB
Diff
249 lines
13 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
|
|
Date: Sun, 21 Mar 2021 16:25:42 -0700
|
|
Subject: [PATCH] Replace ticket level propagator
|
|
|
|
Mojang's propagator is slow, and this isn't surprising
|
|
given it's built on the same utilities the vanilla light engine
|
|
is built on. The simple propagator I wrote is approximately 4x
|
|
faster when simulating player movement. For a long time timing
|
|
reports have shown this function take up significant tick, (
|
|
approx 10% or more), and async sampling data shows the level
|
|
propagation alone takes up a significant amount. So this
|
|
should help with that. A big side effect is that mid-tick
|
|
will be more effective, since more time will be allocated
|
|
to actually processing chunk tasks vs the ticket level updates.
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/level/DistanceManager.java b/src/main/java/net/minecraft/server/level/DistanceManager.java
|
|
index 0b34536cdffab31a717b613042d7098109846586..24fa3d847f7c0aec52133ffc658cd90a602a44d5 100644
|
|
--- a/src/main/java/net/minecraft/server/level/DistanceManager.java
|
|
+++ b/src/main/java/net/minecraft/server/level/DistanceManager.java
|
|
@@ -36,6 +36,7 @@ import net.minecraft.world.level.chunk.LevelChunk;
|
|
import org.apache.logging.log4j.LogManager;
|
|
import org.apache.logging.log4j.Logger;
|
|
|
|
+import it.unimi.dsi.fastutil.longs.Long2IntLinkedOpenHashMap; // Paper
|
|
public abstract class DistanceManager {
|
|
|
|
static final Logger LOGGER = LogManager.getLogger();
|
|
@@ -44,7 +45,7 @@ public abstract class DistanceManager {
|
|
private static final int INITIAL_TICKET_LIST_CAPACITY = 4;
|
|
final Long2ObjectMap<ObjectSet<ServerPlayer>> playersPerChunk = new Long2ObjectOpenHashMap();
|
|
public final Long2ObjectOpenHashMap<SortedArraySet<Ticket<?>>> tickets = new Long2ObjectOpenHashMap();
|
|
- private final DistanceManager.ChunkTicketTracker ticketTracker = new DistanceManager.ChunkTicketTracker();
|
|
+ //private final DistanceManager.ChunkTicketTracker ticketTracker = new DistanceManager.ChunkTicketTracker(); // Paper - replace ticket level propagator
|
|
public static final int MOB_SPAWN_RANGE = 8; // private final ChunkMapDistance.b f = new ChunkMapDistance.b(8); // Paper - no longer used
|
|
//private final DistanceManager.PlayerTicketTracker playerTicketManager = new DistanceManager.PlayerTicketTracker(33); // Paper - no longer used
|
|
// Paper start use a queue, but still keep unique requirement
|
|
@@ -77,6 +78,46 @@ public abstract class DistanceManager {
|
|
this.mainThreadExecutor = mainThreadExecutor;
|
|
}
|
|
|
|
+ // Paper start - replace ticket level propagator
|
|
+ protected final Long2IntLinkedOpenHashMap ticketLevelUpdates = new Long2IntLinkedOpenHashMap() {
|
|
+ @Override
|
|
+ protected void rehash(int newN) {
|
|
+ // no downsizing allowed
|
|
+ if (newN < this.n) {
|
|
+ return;
|
|
+ }
|
|
+ super.rehash(newN);
|
|
+ }
|
|
+ };
|
|
+ protected final io.papermc.paper.util.misc.Delayed8WayDistancePropagator2D ticketLevelPropagator = new io.papermc.paper.util.misc.Delayed8WayDistancePropagator2D(
|
|
+ (long coordinate, byte oldLevel, byte newLevel) -> {
|
|
+ DistanceManager.this.ticketLevelUpdates.putAndMoveToLast(coordinate, convertBetweenTicketLevels(newLevel));
|
|
+ }
|
|
+ );
|
|
+ // function for converting between ticket levels and propagator levels and vice versa
|
|
+ // the problem is the ticket level propagator will propagate from a set source down to zero, whereas mojang expects
|
|
+ // levels to propagate from a set value up to a maximum value. so we need to convert the levels we put into the propagator
|
|
+ // and the levels we get out of the propagator
|
|
+
|
|
+ // this maps so that GOLDEN_TICKET + 1 will be 0 in the propagator, GOLDEN_TICKET will be 1, and so on
|
|
+ // we need GOLDEN_TICKET+1 as 0 because anything >= GOLDEN_TICKET+1 should be unloaded
|
|
+ public static int convertBetweenTicketLevels(final int level) {
|
|
+ return ChunkMap.MAX_CHUNK_DISTANCE - level + 1;
|
|
+ }
|
|
+
|
|
+ protected final int getPropagatedTicketLevel(final long coordinate) {
|
|
+ return convertBetweenTicketLevels(this.ticketLevelPropagator.getLevel(coordinate));
|
|
+ }
|
|
+
|
|
+ protected final void updateTicketLevel(final long coordinate, final int ticketLevel) {
|
|
+ if (ticketLevel > ChunkMap.MAX_CHUNK_DISTANCE) {
|
|
+ this.ticketLevelPropagator.removeSource(coordinate);
|
|
+ } else {
|
|
+ this.ticketLevelPropagator.setSource(coordinate, convertBetweenTicketLevels(ticketLevel));
|
|
+ }
|
|
+ }
|
|
+ // Paper end - replace ticket level propagator
|
|
+
|
|
protected void purgeStaleTickets() {
|
|
++this.ticketTickCounter;
|
|
ObjectIterator objectiterator = this.tickets.long2ObjectEntrySet().fastIterator();
|
|
@@ -87,7 +128,7 @@ public abstract class DistanceManager {
|
|
if ((entry.getValue()).removeIf((ticket) -> { // CraftBukkit - decompile error
|
|
return ticket.timedOut(this.ticketTickCounter);
|
|
})) {
|
|
- this.ticketTracker.update(entry.getLongKey(), DistanceManager.getTicketLevelAt((SortedArraySet) entry.getValue()), false);
|
|
+ this.updateTicketLevel(entry.getLongKey(), getTicketLevelAt(entry.getValue())); // Paper - replace ticket level propagator
|
|
}
|
|
|
|
if (((SortedArraySet) entry.getValue()).isEmpty()) {
|
|
@@ -110,60 +151,93 @@ public abstract class DistanceManager {
|
|
@Nullable
|
|
protected abstract ChunkHolder updateChunkScheduling(long pos, int level, @Nullable ChunkHolder holder, int k);
|
|
|
|
+ protected long ticketLevelUpdateCount; // Paper - replace ticket level propagator
|
|
public boolean runAllUpdates(ChunkMap playerchunkmap) {
|
|
//this.f.a(); // Paper - no longer used
|
|
org.spigotmc.AsyncCatcher.catchOp("DistanceManagerTick"); // Paper
|
|
//this.playerTicketManager.runAllUpdates(); // Paper - no longer used
|
|
- int i = Integer.MAX_VALUE - this.ticketTracker.runDistanceUpdates(Integer.MAX_VALUE);
|
|
- boolean flag = i != 0;
|
|
+ boolean flag = this.ticketLevelPropagator.propagateUpdates(); // Paper - replace ticket level propagator
|
|
|
|
if (flag) {
|
|
;
|
|
}
|
|
|
|
- // Paper start
|
|
- if (!this.pendingChunkUpdates.isEmpty()) {
|
|
- this.pollingPendingChunkUpdates = true; try { // Paper - Chunk priority
|
|
- while(!this.pendingChunkUpdates.isEmpty()) {
|
|
- ChunkHolder remove = this.pendingChunkUpdates.remove();
|
|
- remove.isUpdateQueued = false;
|
|
- remove.updateFutures(playerchunkmap, this.mainThreadExecutor);
|
|
- }
|
|
- } finally { this.pollingPendingChunkUpdates = false; } // Paper - Chunk priority
|
|
- // Paper end
|
|
- return true;
|
|
- } else {
|
|
- if (!this.ticketsToRelease.isEmpty()) {
|
|
- LongIterator longiterator = this.ticketsToRelease.iterator();
|
|
+ // Paper start - replace level propagator
|
|
+ ticket_update_loop:
|
|
+ while (!this.ticketLevelUpdates.isEmpty()) {
|
|
+ flag = true;
|
|
|
|
- while (longiterator.hasNext()) {
|
|
- long j = longiterator.nextLong();
|
|
+ boolean oldPolling = this.pollingPendingChunkUpdates;
|
|
+ this.pollingPendingChunkUpdates = true;
|
|
+ try {
|
|
+ for (java.util.Iterator<Long2IntMap.Entry> iterator = this.ticketLevelUpdates.long2IntEntrySet().fastIterator(); iterator.hasNext();) {
|
|
+ Long2IntMap.Entry entry = iterator.next();
|
|
+ long key = entry.getLongKey();
|
|
+ int newLevel = entry.getIntValue();
|
|
+ ChunkHolder chunk = this.getChunk(key);
|
|
+
|
|
+ if (chunk == null && newLevel > ChunkMap.MAX_CHUNK_DISTANCE) {
|
|
+ // not loaded and it shouldn't be loaded!
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ int currentLevel = chunk == null ? ChunkMap.MAX_CHUNK_DISTANCE + 1 : chunk.getTicketLevel();
|
|
+
|
|
+ if (currentLevel == newLevel) {
|
|
+ // nothing to do
|
|
+ continue;
|
|
+ }
|
|
|
|
- if (this.getTickets(j).stream().anyMatch((ticket) -> {
|
|
- return ticket.getType() == TicketType.PLAYER;
|
|
- })) {
|
|
- ChunkHolder playerchunk = playerchunkmap.getUpdatingChunkIfPresent(j);
|
|
+ this.updateChunkScheduling(key, newLevel, chunk, currentLevel);
|
|
+ }
|
|
|
|
- if (playerchunk == null) {
|
|
- throw new IllegalStateException();
|
|
+ long recursiveCheck = ++this.ticketLevelUpdateCount;
|
|
+ while (!this.ticketLevelUpdates.isEmpty()) {
|
|
+ long key = this.ticketLevelUpdates.firstLongKey();
|
|
+ int newLevel = this.ticketLevelUpdates.removeFirstInt();
|
|
+ ChunkHolder chunk = this.getChunk(key);
|
|
+
|
|
+ if (chunk == null) {
|
|
+ if (newLevel <= ChunkMap.MAX_CHUNK_DISTANCE) {
|
|
+ throw new IllegalStateException("Expected chunk holder to be created");
|
|
}
|
|
+ // not loaded and it shouldn't be loaded!
|
|
+ continue;
|
|
+ }
|
|
|
|
- CompletableFuture<Either<LevelChunk, ChunkHolder.ChunkLoadingFailure>> completablefuture = playerchunk.getEntityTickingChunkFuture();
|
|
+ int currentLevel = chunk.oldTicketLevel;
|
|
|
|
- completablefuture.thenAccept((either) -> {
|
|
- this.mainThreadExecutor.execute(() -> {
|
|
- this.ticketThrottlerReleaser.tell(ChunkTaskPriorityQueueSorter.release(() -> {
|
|
- }, j, false));
|
|
- });
|
|
- });
|
|
+ if (currentLevel == newLevel) {
|
|
+ // nothing to do
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ chunk.updateFutures(playerchunkmap, this.mainThreadExecutor);
|
|
+ if (recursiveCheck != this.ticketLevelUpdateCount) {
|
|
+ // back to the start, we must create player chunks and update the ticket level fields before
|
|
+ // processing the actual level updates
|
|
+ continue ticket_update_loop;
|
|
}
|
|
}
|
|
|
|
- this.ticketsToRelease.clear();
|
|
- }
|
|
+ for (;;) {
|
|
+ if (recursiveCheck != this.ticketLevelUpdateCount) {
|
|
+ continue ticket_update_loop;
|
|
+ }
|
|
+ ChunkHolder pendingUpdate = this.pendingChunkUpdates.poll();
|
|
+ if (pendingUpdate == null) {
|
|
+ break;
|
|
+ }
|
|
|
|
- return flag;
|
|
+ pendingUpdate.updateFutures(playerchunkmap, this.mainThreadExecutor);
|
|
+ }
|
|
+ } finally {
|
|
+ this.pollingPendingChunkUpdates = oldPolling;
|
|
+ }
|
|
}
|
|
+
|
|
+ return flag;
|
|
+ // Paper end - replace level propagator
|
|
}
|
|
boolean pollingPendingChunkUpdates = false; // Paper - Chunk priority
|
|
|
|
@@ -175,7 +249,7 @@ public abstract class DistanceManager {
|
|
|
|
ticket1.setCreatedTick(this.ticketTickCounter);
|
|
if (ticket.getTicketLevel() < j) {
|
|
- this.ticketTracker.update(i, ticket.getTicketLevel(), true);
|
|
+ this.updateTicketLevel(i, ticket.getTicketLevel()); // Paper - replace ticket level propagator
|
|
}
|
|
|
|
return ticket == ticket1; // CraftBukkit
|
|
@@ -219,7 +293,7 @@ public abstract class DistanceManager {
|
|
// Paper start - Chunk priority
|
|
int newLevel = getTicketLevelAt(arraysetsorted);
|
|
if (newLevel > oldLevel) {
|
|
- this.ticketTracker.update(i, newLevel, false);
|
|
+ this.updateTicketLevel(i, newLevel); // Paper // Paper - replace ticket level propagator
|
|
}
|
|
// Paper end
|
|
return removed; // CraftBukkit
|
|
@@ -507,7 +581,7 @@ public abstract class DistanceManager {
|
|
SortedArraySet<Ticket<?>> tickets = entry.getValue();
|
|
if (tickets.remove(target)) {
|
|
// copied from removeTicket
|
|
- this.ticketTracker.update(entry.getLongKey(), DistanceManager.getTicketLevelAt(tickets), false);
|
|
+ this.updateTicketLevel(entry.getLongKey(), getTicketLevelAt(tickets)); // Paper - replace ticket level propagator
|
|
|
|
// can't use entry after it's removed
|
|
if (tickets.isEmpty()) {
|