From beac857bf39ee6363dd4dfe1a1f5445acadb8fb9 Mon Sep 17 00:00:00 2001 From: Spottedleaf Date: Fri, 14 Feb 2020 01:24:39 -0800 Subject: [PATCH] Optimise TickListServer by rewriting it In my profiling TickListServer showed up as ~10% for saving chunks and ~5% for the scheduling of items on a server with ~90 players at view distance = 5. Most of the performance loss is unneccessary. TickListServer has numerous performance issues: 1. Handling scheduled items is O(nlogn) 2. Getting scheduled items for a chunk is O(n), with n being the the number of scheduled items for all chunks (hits saving very hard) 3. Checking if an item is scheduled for the current tick is O(n), with n being the number of items scheduled for current tick 4. Items not in ticking chunks are churned in the scheduler The biggest issues are 4 & 2. We solve 1 by splitting up scheduled items into short and long scheduled, where we expect the vast majority of our entries to be in the short scheduled set. Handling short scheduled items is O(n) due to how the comparison process is reduced to mapping. See TickListServerInterval. However, this isn't memory-efficient - which is why long scheduled exists. Long scheduled is handled the same as TickListServer. 2 is solved by mapping what entries are in what chunks. 3 is solved by mapping what blocks have what scheduled for them. 4 is solved by moving the items that are not in ticking chunks into a map of entries for that chunk. Once the chunk is moved to ticking, the items are re-scheduled. This patch has also added two flags to debug excessive tick delays: -Dpaper.ticklist-warn-on-excessive-delay=true (false by default) and -Dpaper.ticklist-excessive-delay-threshold=ticks which sets the excessive tick delay to the specified ticks (defaults to 60 * 20 ticks, aka 60 seconds) diff --git a/src/main/java/com/destroystokyo/paper/server/ticklist/PaperTickList.java b/src/main/java/com/destroystokyo/paper/server/ticklist/PaperTickList.java new file mode 100644 index 0000000000..ce653f6b4b --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/server/ticklist/PaperTickList.java @@ -0,0 +1,622 @@ +package com.destroystokyo.paper.server.ticklist; + +import net.minecraft.server.MCUtil; +import net.minecraft.server.MinecraftServer; +import it.unimi.dsi.fastutil.longs.Long2ObjectMap; +import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap; +import it.unimi.dsi.fastutil.objects.ObjectRBTreeSet; +import net.minecraft.server.BaseBlockPosition; +import net.minecraft.server.BlockPosition; +import net.minecraft.server.ChunkCoordIntPair; +import net.minecraft.server.ChunkProviderServer; +import net.minecraft.server.CrashReport; +import net.minecraft.server.CrashReportSystemDetails; +import net.minecraft.server.IBlockData; +import net.minecraft.server.MinecraftKey; +import net.minecraft.server.NBTTagList; +import net.minecraft.server.NextTickListEntry; +import net.minecraft.server.ReportedException; +import net.minecraft.server.StructureBoundingBox; +import net.minecraft.server.TickListPriority; +import net.minecraft.server.TickListServer; +import net.minecraft.server.WorldServer; +import java.util.ArrayDeque; +import java.util.ArrayList; +import java.util.Collections; +import java.util.Comparator; +import java.util.Iterator; +import java.util.List; +import java.util.function.Consumer; +import java.util.function.Function; +import java.util.function.Predicate; +import java.util.stream.Stream; + +public final class PaperTickList extends TickListServer { // extend to avoid breaking ABI + + // in the order the state is expected to change (mostly) + public static final int STATE_UNSCHEDULED = 1 << 0; + public static final int STATE_SCHEDULED = 1 << 1; // scheduled for some tick + public static final int STATE_PENDING_TICK = 1 << 2; // for this tick + public static final int STATE_TICKING = 1 << 3; + public static final int STATE_TICKED = 1 << 4; // after this, it gets thrown back to unscheduled + public static final int STATE_CANCELLED_TICK = 1 << 5; // still gets moved to unscheduled after tick + + private static final int SHORT_SCHEDULE_TICK_THRESHOLD = 20 * 20 + 1; // 20 seconds + + private final WorldServer world; + private final Predicate excludeFromScheduling; + private final Function getMinecraftKeyFrom; + private final Function getObjectFronMinecraftKey; + private final Consumer> tickFunction; + + private final co.aikar.timings.Timing timingCleanup; // Paper + private final co.aikar.timings.Timing timingTicking; // Paper + private final co.aikar.timings.Timing timingFinished; + + // note: remove ops / add ops suck on fastutil, a chained hashtable implementation would work better, but Long... + // try to alleviate with a very small load factor + private final Long2ObjectOpenHashMap>> entriesByBlock = new Long2ObjectOpenHashMap<>(1024, 0.25f); + private final Long2ObjectOpenHashMap>> entriesByChunk = new Long2ObjectOpenHashMap<>(1024, 0.25f); + private final Long2ObjectOpenHashMap>> pendingChunkTickLoad = new Long2ObjectOpenHashMap<>(1024, 0.5f); + + // fastutil has O(1) first/last while TreeMap/TreeSet are log(n) + private final ObjectRBTreeSet> longScheduled = new ObjectRBTreeSet<>(TickListServerInterval.ENTRY_COMPARATOR); + + private final ArrayDeque> toTickThisTick = new ArrayDeque<>(); + + private final TickListServerInterval[] shortScheduled = new TickListServerInterval[SHORT_SCHEDULE_TICK_THRESHOLD]; + { + for (int i = 0, len = this.shortScheduled.length; i < len; ++i) { + this.shortScheduled[i] = new TickListServerInterval<>(); + } + } + private int shortScheduledIndex; + + private long nextTick; + + private static final boolean WARN_ON_EXCESSIVE_DELAY = Boolean.getBoolean("paper.ticklist-warn-on-excessive-delay"); + private static final long EXCESSIVE_DELAY_THRESHOLD = Long.getLong("paper.ticklist-excessive-delay-threshold", 60 * 20).longValue(); // 1 min dfl + + // assume index < length + private static int getWrappedIndex(final int start, final int length, final int index) { + final int next = start + index; + return next < length ? next : next - length; + } + + private static int getNextIndex(final int curr, final int length) { + final int next = curr + 1; + return next < length ? next : 0; + } + + public PaperTickList(final WorldServer world, final Predicate excludeFromScheduling, final Function getMinecraftKeyFrom, + final Function getObjectFronMinecraftKey, final Consumer> tickFunction, final String timingsType) { + super(world, excludeFromScheduling, getMinecraftKeyFrom, getObjectFronMinecraftKey, tickFunction, timingsType); + this.world = world; + this.excludeFromScheduling = excludeFromScheduling; + this.getMinecraftKeyFrom = getMinecraftKeyFrom; + this.getObjectFronMinecraftKey = getObjectFronMinecraftKey; + this.tickFunction = tickFunction; + this.timingCleanup = co.aikar.timings.WorldTimingsHandler.getTickList(world, timingsType + " - Cleanup"); // Paper + this.timingTicking = co.aikar.timings.WorldTimingsHandler.getTickList(world, timingsType + " - Ticking"); // Paper + this.timingFinished = co.aikar.timings.WorldTimingsHandler.getTickList(world, timingsType + " - Finish"); + this.nextTick = this.world.getTime(); + } + + private void queueEntryForTick(final NextTickListEntry entry, final ChunkProviderServer chunkProvider) { + if (entry.tickState == STATE_SCHEDULED) { + if (chunkProvider.isTickingReadyMainThread(entry.getPosition())) { + this.toTickThisTick.add(entry); + entry.tickState = STATE_PENDING_TICK; + } else { + // we dump them to a map to avoid constantly re-scheduling them + this.addToNotTickingReady(entry); + } + } + } + + private void addToNotTickingReady(final NextTickListEntry entry) { + this.pendingChunkTickLoad.computeIfAbsent(MCUtil.getCoordinateKey(entry.getPosition()), (long keyInMap) -> { + return new ArrayList<>(); + }).add(entry); + } + + private void addToSchedule(final NextTickListEntry entry) { + long delay = entry.getTargetTick() - this.nextTick; + if (delay < SHORT_SCHEDULE_TICK_THRESHOLD) { + if (delay < 0) { + // longScheduled orders by tick time, short scheduled does not + this.longScheduled.add(entry); + } else { + this.shortScheduled[getWrappedIndex(this.shortScheduledIndex, SHORT_SCHEDULE_TICK_THRESHOLD, (int)delay)].addEntryLast(entry); + } + } else { + this.longScheduled.add(entry); + } + } + + private void removeEntry(final NextTickListEntry entry) { + entry.tickState = STATE_CANCELLED_TICK; + // short/long scheduled will skip the entry + + final BlockPosition pos = entry.getPosition(); + final long blockKey = MCUtil.getBlockKey(pos); + + final ArrayList> currentEntries = this.entriesByBlock.get(blockKey); + + if (currentEntries.size() == 1) { + // it should contain our entry + this.entriesByBlock.remove(blockKey); + } else { + // it's more likely that this entry is at the start of the list than the end + for (int i = 0, len = currentEntries.size(); i < len; ++i) { + final NextTickListEntry currentEntry = currentEntries.get(i); + if (currentEntry == entry) { + currentEntries.remove(i); + break; + } + } + } + + final long chunkKey = MCUtil.getCoordinateKey(entry.getPosition()); + + ObjectRBTreeSet> set = this.entriesByChunk.get(chunkKey); + + set.remove(entry); + + if (set.isEmpty()) { + this.entriesByChunk.remove(chunkKey); + } + + ArrayList> pendingTickingLoad = this.pendingChunkTickLoad.get(chunkKey); + + if (pendingTickingLoad != null) { + for (int i = 0, len = pendingTickingLoad.size(); i < len; ++i) { + if (pendingTickingLoad.get(i) == entry) { + pendingTickingLoad.remove(i); + break; + } + } + + if (pendingTickingLoad.isEmpty()) { + this.pendingChunkTickLoad.remove(chunkKey); + } + } + + long delay = entry.getTargetTick() - this.nextTick; + if (delay >= SHORT_SCHEDULE_TICK_THRESHOLD) { + this.longScheduled.remove(entry); + } + } + + public void onChunkSetTicking(final int chunkX, final int chunkZ) { + final ArrayList> pending = this.pendingChunkTickLoad.remove(MCUtil.getCoordinateKey(chunkX, chunkZ)); + if (pending == null) { + return; + } + + for (int i = 0, size = pending.size(); i < size; ++i) { + final NextTickListEntry entry = pending.get(i); + // already in all the relevant reference maps, just need to add to longScheduled or shortScheduled + this.addToSchedule(entry); + } + } + + private void prepare() { + final long currentTick = this.world.getTime(); + + final ChunkProviderServer chunkProvider = this.world.getChunkProvider(); + + // here we setup what's going to tick + + // we don't remove items from shortScheduled (but do from longScheduled) because they're cleared at the end of + // this tick + if (this.longScheduled.isEmpty() || this.longScheduled.first().getTargetTick() > currentTick) { + // nothing in longScheduled to worry about + final TickListServerInterval interval = this.shortScheduled[this.shortScheduledIndex]; + for (int i = 0, len = interval.byPriority.length; i < len; ++i) { + for (final Iterator> iterator = interval.byPriority[i].iterator(); iterator.hasNext();) { + this.queueEntryForTick(iterator.next(), chunkProvider); + } + } + } else { + final TickListServerInterval interval = this.shortScheduled[this.shortScheduledIndex]; + + // combine interval and longScheduled, keeping order + final Comparator> comparator = (Comparator)TickListServerInterval.ENTRY_COMPARATOR; + final Iterator> longScheduledIterator = this.longScheduled.iterator(); + NextTickListEntry longCurrent = longScheduledIterator.next(); + + for (int i = 0, len = interval.byPriority.length; i < len; ++i) { + for (final Iterator> iterator = interval.byPriority[i].iterator(); iterator.hasNext();) { + final NextTickListEntry shortCurrent = iterator.next(); + if (longCurrent != null) { + // drain longCurrent until we can add shortCurrent + while (comparator.compare(longCurrent, shortCurrent) <= 0) { + this.queueEntryForTick(longCurrent, chunkProvider); + longScheduledIterator.remove(); + if (longScheduledIterator.hasNext()) { + longCurrent = longScheduledIterator.next(); + if (longCurrent.getTargetTick() > currentTick) { + longCurrent = null; + break; + } + } else { + longCurrent = null; + break; + } + } + } + this.queueEntryForTick(shortCurrent, chunkProvider); + } + } + + // add remaining from long scheduled + for (;;) { + if (longCurrent == null || longCurrent.getTargetTick() > currentTick) { + break; + } + longScheduledIterator.remove(); + this.queueEntryForTick(longCurrent, chunkProvider); + + if (longScheduledIterator.hasNext()) { + longCurrent = longScheduledIterator.next(); + } else { + break; + } + } + } + } + + @Override + public void tick() { + final ChunkProviderServer chunkProvider = this.world.getChunkProvider(); + + this.world.getMethodProfiler().enter("cleaning"); + this.timingCleanup.startTiming(); + + this.prepare(); + + // this must be done here in case something schedules in the tick code + this.shortScheduled[this.shortScheduledIndex].clear(); + this.shortScheduledIndex = getNextIndex(this.shortScheduledIndex, SHORT_SCHEDULE_TICK_THRESHOLD); + this.nextTick = this.world.getTime() + 1; + + this.timingCleanup.stopTiming(); + this.world.getMethodProfiler().exitEnter("ticking"); + this.timingTicking.startTiming(); + + for (final NextTickListEntry toTick : this.toTickThisTick) { + if (toTick.tickState != STATE_PENDING_TICK) { + // onTickEnd gets called at end of tick + continue; + } + try { + if (chunkProvider.isTickingReadyMainThread(toTick.getPosition())) { + toTick.tickState = STATE_TICKING; + this.tickFunction.accept(toTick); + if (toTick.tickState == STATE_TICKING) { + toTick.tickState = STATE_TICKED; + } // else it's STATE_CANCELLED_TICK + } else { + // re-schedule eventually + toTick.tickState = STATE_SCHEDULED; + this.addToNotTickingReady(toTick); + } + } catch (final Throwable thr) { + // start copy from TickListServer // TODO check on update + CrashReport crashreport = CrashReport.a(thr, "Exception while ticking"); + CrashReportSystemDetails crashreportsystemdetails = crashreport.a("Block being ticked"); + + CrashReportSystemDetails.a(crashreportsystemdetails, toTick.getPosition(), (IBlockData) null); + throw new ReportedException(crashreport); + // end copy from TickListServer + } + } + + this.timingTicking.stopTiming(); + this.world.getMethodProfiler().exit(); + this.timingFinished.startTiming(); + + // finished ticking, actual cleanup time + for (int i = 0, len = this.toTickThisTick.size(); i < len; ++i) { + final NextTickListEntry entry = this.toTickThisTick.poll(); + if (entry.tickState != STATE_SCHEDULED) { + // some entries get re-scheduled due to their chunk not being loaded/at correct status, so do not + // call onTickEnd for them + this.onTickEnd(entry); + } + } + + this.timingFinished.stopTiming(); + } + + private void onTickEnd(final NextTickListEntry entry) { + if (entry.tickState == STATE_CANCELLED_TICK) { + return; + } + entry.tickState = STATE_UNSCHEDULED; + + final BlockPosition pos = entry.getPosition(); + final long blockKey = MCUtil.getBlockKey(pos); + + final ArrayList> currentEntries = this.entriesByBlock.get(blockKey); + + if (currentEntries.size() == 1) { + // it should contain our entry + this.entriesByBlock.remove(blockKey); + } else { + // it's more likely that this entry is at the start of the list than the end + for (int i = 0, len = currentEntries.size(); i < len; ++i) { + final NextTickListEntry currentEntry = currentEntries.get(i); + if (currentEntry == entry) { + currentEntries.remove(i); + break; + } + } + } + + final long chunkKey = MCUtil.getCoordinateKey(entry.getPosition()); + + ObjectRBTreeSet> set = this.entriesByChunk.get(chunkKey); + + set.remove(entry); + + if (set.isEmpty()) { + this.entriesByChunk.remove(chunkKey); + } + + // already removed from longScheduled or shortScheduled + } + + @Override + public boolean isPendingTickThisTick(final BlockPosition blockposition, final T data) { + final ArrayList> entries = this.entriesByBlock.get(MCUtil.getBlockKey(blockposition)); + + if (entries == null) { + return false; + } + + for (int i = 0, size = entries.size(); i < size; ++i) { + final NextTickListEntry entry = entries.get(i); + if (entry.getData() == data && entry.tickState == STATE_PENDING_TICK) { + return true; + } + } + + return false; + } + + @Override + public boolean isScheduledForTick(final BlockPosition blockposition, final T data) { + final ArrayList> entries = this.entriesByBlock.get(MCUtil.getBlockKey(blockposition)); + + if (entries == null) { + return false; + } + + for (int i = 0, size = entries.size(); i < size; ++i) { + final NextTickListEntry entry = entries.get(i); + if (entry.getData() == data && entry.tickState == STATE_SCHEDULED) { + return true; + } + } + + return false; + } + + @Override + public void schedule(BlockPosition blockPosition, T t, int i, TickListPriority tickListPriority) { + this.schedule(blockPosition, t, i + this.world.getTime(), tickListPriority); + } + + public void schedule(final NextTickListEntry entry) { + this.schedule(entry.getPosition(), entry.getData(), entry.getTargetTick(), entry.getPriority()); + } + + public void schedule(final BlockPosition pos, final T data, final long targetTick, final TickListPriority priority) { + final NextTickListEntry entry = new NextTickListEntry<>(pos, data, targetTick, priority); + if (this.excludeFromScheduling.test(entry.getData())) { + return; + } + + if (WARN_ON_EXCESSIVE_DELAY) { + final long delay = entry.getTargetTick() - this.nextTick; + if (delay >= EXCESSIVE_DELAY_THRESHOLD) { + MinecraftServer.LOGGER.warn("Entry " + entry.toString() + " has been scheduled with an excessive delay of: " + delay, new Throwable()); + } + } + + final long blockKey = MCUtil.getBlockKey(pos); + + final ArrayList> currentEntries = this.entriesByBlock.computeIfAbsent(blockKey, (long keyInMap) -> new ArrayList<>(3)); + + if (currentEntries.isEmpty()) { + currentEntries.add(entry); + } else { + for (int i = 0, size = currentEntries.size(); i < size; ++i) { + final NextTickListEntry currentEntry = currentEntries.get(i); + + // entries are only blocked from scheduling if currentEntry.equals(toSchedule) && currentEntry is scheduled to tick (NOT including pending) + if (currentEntry.getData() == entry.getData() && currentEntry.tickState == STATE_SCHEDULED) { + // can't add + return; + } + } + currentEntries.add(entry); + } + + entry.tickState = STATE_SCHEDULED; + + this.entriesByChunk.computeIfAbsent(MCUtil.getCoordinateKey(entry.getPosition()), (final long keyInMap) -> { + return new ObjectRBTreeSet<>(TickListServerInterval.ENTRY_COMPARATOR); + }).add(entry); + + this.addToSchedule(entry); + } + + @Override + public void scheduleAll(final Stream> stream) { + this.scheduleAll(stream.iterator()); + } + public void scheduleAll(final Iterator> iterator) { + while (iterator.hasNext()) { + this.schedule(iterator.next()); + } + } + + // this is not the standard interception calculation, but it's the one vanilla uses + // i.e the y value is ignored? the x, z calc isn't correct? + // however for the copy op they use the correct intersection, after using this one of course... + private static boolean isBlockInSortof(final StructureBoundingBox boundingBox, final BlockPosition pos) { + return pos.getX() >= boundingBox.getMinX() && pos.getX() < boundingBox.getMaxX() && pos.getZ() >= boundingBox.getMinZ() && pos.getZ() < boundingBox.getMaxZ(); + } + + @Override + public List> getEntriesInBoundingBox(final StructureBoundingBox structureboundingbox, final boolean removeReturned, final boolean excludeTicked) { + if (structureboundingbox.getMinX() == structureboundingbox.getMaxX() || structureboundingbox.getMinZ() == structureboundingbox.getMaxZ()) { + return Collections.emptyList(); // vanilla behaviour, check isBlockInSortof above + } + + final int lowerChunkX = structureboundingbox.getMinX() >> 4; + final int upperChunkX = (structureboundingbox.getMaxX() - 1) >> 4; // subtract 1 since maxX is exclusive + final int lowerChunkZ = structureboundingbox.getMinZ() >> 4; + final int upperChunkZ = (structureboundingbox.getMaxZ() - 1) >> 4; // subtract 1 since maxZ is exclusive + + final int xChunksLength = (upperChunkX - lowerChunkX + 1); + final int zChunksLength = (upperChunkZ - lowerChunkZ + 1); + + final ObjectRBTreeSet>[] containingChunks = new ObjectRBTreeSet[xChunksLength * zChunksLength]; + + final int offset = (xChunksLength * -lowerChunkZ - lowerChunkX); + int totalEntries = 0; + for (int currChunkX = lowerChunkX; currChunkX <= upperChunkX; ++currChunkX) { + for (int currChunkZ = lowerChunkZ; currChunkZ <= upperChunkZ; ++currChunkZ) { + // todo optimize + //final int index = (currChunkX - lowerChunkX) + xChunksLength * (currChunkZ - lowerChunkZ); + final int index = offset + currChunkX + xChunksLength * currChunkZ; + final ObjectRBTreeSet> set = containingChunks[index] = this.entriesByChunk.get(MCUtil.getCoordinateKey(currChunkX, currChunkZ)); + if (set != null) { + totalEntries += set.size(); + } + } + } + + final List> ret = new ArrayList<>(totalEntries); + + final int matchOne = (STATE_SCHEDULED | STATE_PENDING_TICK) | (excludeTicked ? 0 : (STATE_TICKING | STATE_TICKED)); + + MCUtil.mergeSortedSets((NextTickListEntry entry) -> { + if (!isBlockInSortof(structureboundingbox, entry.getPosition())) { + return; + } + final int tickState = entry.tickState; + if ((tickState & matchOne) == 0) { + return; + } + + ret.add(entry); + return; + }, TickListServerInterval.ENTRY_COMPARATOR, containingChunks); + + if (removeReturned) { + for (NextTickListEntry entry : ret) { + this.removeEntry(entry); + } + } + + return ret; + } + + @Override + public void copy(StructureBoundingBox structureboundingbox, BlockPosition blockposition) { + // start copy from TickListServer // TODO check on update + List> list = this.getEntriesInBoundingBox(structureboundingbox, false, false); + Iterator> iterator = list.iterator(); + + while (iterator.hasNext()) { + NextTickListEntry nextticklistentry = iterator.next(); + + if (structureboundingbox.hasPoint( nextticklistentry.getPosition())) { + BlockPosition blockposition1 = nextticklistentry.getPosition().add(blockposition); + T t0 = nextticklistentry.getData(); + + this.schedule(new NextTickListEntry<>(blockposition1, t0, nextticklistentry.getTargetTick(), nextticklistentry.getPriority())); + } + } + // end copy from TickListServer + } + + @Override + public List> getEntriesInChunk(ChunkCoordIntPair chunkPos, boolean removeReturned, boolean excludeTicked) { + // Vanilla DOES get the entries 2 blocks out of the chunk too, but that doesn't matter since we ignore chunks + // not at ticking status, and ticking status requires neighbours loaded + // so with this method we will reduce scheduler churning + final int matchOne = (STATE_SCHEDULED | STATE_PENDING_TICK) | (excludeTicked ? 0 : (STATE_TICKING | STATE_TICKED)); + + final ObjectRBTreeSet> entries = this.entriesByChunk.get(MCUtil.getCoordinateKey(chunkPos)); + + if (entries == null) { + return Collections.emptyList(); + } + + final List> ret = new ArrayList<>(entries.size()); + + for (NextTickListEntry entry : entries) { + if ((entry.tickState & matchOne) == 0) { + continue; + } + ret.add(entry); + } + + if (removeReturned) { + for (NextTickListEntry entry : ret) { + this.removeEntry(entry); + } + } + + return ret; + } + + @Override + public NBTTagList serialize(ChunkCoordIntPair chunkcoordintpair) { + // start copy from TickListServer // TODO check on update + List> list = this.getEntriesInChunk(chunkcoordintpair, false, true); + + return TickListServer.serialize(this.getMinecraftKeyFrom, list, this.world.getTime()); + // end copy from TickListServer + } + + @Override + public int getTotalScheduledEntries() { + // good thing this is only used in debug reports // TODO check on update + int ret = 0; + + for (NextTickListEntry entry : this.longScheduled) { + if (entry.tickState == STATE_SCHEDULED) { + ++ret; + } + } + + for (Iterator>>> iterator = this.pendingChunkTickLoad.long2ObjectEntrySet().iterator(); iterator.hasNext();) { + ArrayList> list = iterator.next().getValue(); + + for (NextTickListEntry entry : list) { + if (entry.tickState == STATE_SCHEDULED) { + ++ret; + } + } + } + + for (TickListServerInterval interval : this.shortScheduled) { + for (Iterable> set : interval.byPriority) { + for (NextTickListEntry entry : set) { + if (entry.tickState == STATE_SCHEDULED) { + ++ret; + } + } + } + } + + return ret; + } +} diff --git a/src/main/java/com/destroystokyo/paper/server/ticklist/TickListServerInterval.java b/src/main/java/com/destroystokyo/paper/server/ticklist/TickListServerInterval.java new file mode 100644 index 0000000000..13cf1a55a9 --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/server/ticklist/TickListServerInterval.java @@ -0,0 +1,41 @@ +package com.destroystokyo.paper.server.ticklist; + +import com.destroystokyo.paper.util.set.LinkedSortedSet; +import net.minecraft.server.NextTickListEntry; +import net.minecraft.server.TickListPriority; +import java.util.Comparator; + +// represents a set of entries to tick at a specified time +public final class TickListServerInterval { + + public static final int TOTAL_PRIORITIES = TickListPriority.values().length; + public static final Comparator> ENTRY_COMPARATOR_BY_ID = (entry1, entry2) -> { + return Long.compare(entry1.getId(), entry2.getId()); + }; + public static final Comparator> ENTRY_COMPARATOR = (Comparator)NextTickListEntry.comparator(); + + // we do not record the interval, this class is meant to be used on a ring buffer + + // inlined enum map for TickListPriority + public final LinkedSortedSet>[] byPriority = new LinkedSortedSet[TOTAL_PRIORITIES]; + + { + for (int i = 0, len = this.byPriority.length; i < len; ++i) { + this.byPriority[i] = new LinkedSortedSet<>(ENTRY_COMPARATOR_BY_ID); + } + } + + public void addEntryLast(final NextTickListEntry entry) { + this.byPriority[entry.getPriority().ordinal()].addLast(entry); + } + + public void addEntryFirst(final NextTickListEntry entry) { + this.byPriority[entry.getPriority().ordinal()].addFirst(entry); + } + + public void clear() { + for (int i = 0, len = this.byPriority.length; i < len; ++i) { + this.byPriority[i].clear(); // O(1) clear + } + } +} diff --git a/src/main/java/com/destroystokyo/paper/util/set/LinkedSortedSet.java b/src/main/java/com/destroystokyo/paper/util/set/LinkedSortedSet.java new file mode 100644 index 0000000000..118988c39e --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/util/set/LinkedSortedSet.java @@ -0,0 +1,142 @@ +package com.destroystokyo.paper.util.set; + +import java.util.Comparator; +import java.util.Iterator; +import java.util.NoSuchElementException; + +public final class LinkedSortedSet implements Iterable { + + public final Comparator comparator; + + protected Link head; + protected Link tail; + + public LinkedSortedSet() { + this((Comparator)Comparator.naturalOrder()); + } + + public LinkedSortedSet(final Comparator comparator) { + this.comparator = comparator; + } + + public void clear() { + this.head = this.tail = null; + } + + @Override + public Iterator iterator() { + return new Iterator() { + + Link next = LinkedSortedSet.this.head; + + @Override + public boolean hasNext() { + return this.next != null; + } + + @Override + public E next() { + final Link next = this.next; + if (next == null) { + throw new NoSuchElementException(); + } + this.next = next.next; + return next.element; + } + }; + } + + public boolean addLast(final E element) { + final Comparator comparator = this.comparator; + + Link curr = this.tail; + if (curr != null) { + int compare; + + while ((compare = comparator.compare(element, curr.element)) < 0) { + Link prev = curr; + curr = curr.prev; + if (curr != null) { + continue; + } + this.head = prev.prev = new Link<>(element, null, prev); + return true; + } + + if (compare != 0) { + // insert after curr + final Link next = curr.next; + final Link insert = new Link<>(element, curr, next); + curr.next = insert; + + if (next == null) { + this.tail = insert; + } else { + next.prev = insert; + } + return true; + } + + return false; + } else { + this.head = this.tail = new Link<>(element); + return true; + } + } + + public boolean addFirst(final E element) { + final Comparator comparator = this.comparator; + + Link curr = this.head; + if (curr != null) { + int compare; + + while ((compare = comparator.compare(element, curr.element)) > 0) { + Link prev = curr; + curr = curr.next; + if (curr != null) { + continue; + } + this.tail = prev.next = new Link<>(element, prev, null); + return true; + } + + if (compare != 0) { + // insert before curr + final Link prev = curr.prev; + final Link insert = new Link<>(element, prev, curr); + curr.prev = insert; + + if (prev == null) { + this.head = insert; + } else { + prev.next = insert; + } + return true; + } + + return false; + } else { + this.head = this.tail = new Link<>(element); + return true; + } + } + + protected static final class Link { + public E element; + public Link prev; + public Link next; + + public Link() {} + + public Link(final E element) { + this.element = element; + } + + public Link(final E element, final Link prev, final Link next) { + this.element = element; + this.prev = prev; + this.next = next; + } + } +} diff --git a/src/main/java/net/minecraft/server/BlockPosition.java b/src/main/java/net/minecraft/server/BlockPosition.java index e650a2e48d..2d07d350d2 100644 --- a/src/main/java/net/minecraft/server/BlockPosition.java +++ b/src/main/java/net/minecraft/server/BlockPosition.java @@ -125,6 +125,7 @@ public class BlockPosition extends BaseBlockPosition implements MinecraftSeriali return i == 0 && j == 0 && k == 0 ? this : new BlockPosition(this.getX() + i, this.getY() + j, this.getZ() + k); } + public final BlockPosition add(BaseBlockPosition baseblockposition) { return this.a(baseblockposition); } // Paper - OBFHELPER public BlockPosition a(BaseBlockPosition baseblockposition) { return this.b(baseblockposition.getX(), baseblockposition.getY(), baseblockposition.getZ()); } diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java index 8412feef6b..1dcd0980ec 100644 --- a/src/main/java/net/minecraft/server/ChunkProviderServer.java +++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java @@ -119,6 +119,13 @@ public class ChunkProviderServer extends IChunkProvider { } // Paper + // Paper start - rewrite ticklistserver + public final boolean isTickingReadyMainThread(BlockPosition pos) { + PlayerChunk chunk = this.playerChunkMap.getUpdatingChunk(MCUtil.getCoordinateKey(pos)); + return chunk != null && chunk.isTickingReady(); + } + // Paper end - rewrite ticklistserver + public ChunkProviderServer(WorldServer worldserver, File file, DataFixer datafixer, DefinedStructureManager definedstructuremanager, Executor executor, ChunkGenerator chunkgenerator, int i, WorldLoadListener worldloadlistener, Supplier supplier) { this.world = worldserver; diff --git a/src/main/java/net/minecraft/server/NextTickListEntry.java b/src/main/java/net/minecraft/server/NextTickListEntry.java index 33cfeabdee..2287e47d1b 100644 --- a/src/main/java/net/minecraft/server/NextTickListEntry.java +++ b/src/main/java/net/minecraft/server/NextTickListEntry.java @@ -5,11 +5,13 @@ import java.util.Comparator; public class NextTickListEntry { private static final java.util.concurrent.atomic.AtomicLong COUNTER = new java.util.concurrent.atomic.AtomicLong(); // Paper - async chunk loading - private final T e; - public final BlockPosition a; - public final long b; - public final TickListPriority c; - private final long f; + private final T e; public final T getData() { return this.e; } // Paper - OBFHELPER + public final BlockPosition a; public final BlockPosition getPosition() { return this.a; } // Paper - OBFHELPER + public final long b; public final long getTargetTick() { return this.b; } // Paper - OBFHELPER + public final TickListPriority c; public final TickListPriority getPriority() { return this.c; } // Paper - OBFHELPER + private final long f; public final long getId() { return this.f; } // Paper - OBFHELPER + private final int hash; // Paper + public int tickState; // Paper public NextTickListEntry(BlockPosition blockposition, T t0) { this(blockposition, t0, 0L, TickListPriority.NORMAL); @@ -21,6 +23,7 @@ public class NextTickListEntry { this.e = t0; this.b = i; this.c = ticklistpriority; + this.hash = this.computeHash(); // Paper } public boolean equals(Object object) { @@ -33,19 +36,31 @@ public class NextTickListEntry { } } + // Paper start - optimize hashcode + @Override public int hashCode() { + return this.hash; + } + public final int computeHash() { + // Paper end - optimize hashcode return this.a.hashCode(); } - public static Comparator a() { // Paper - decompile fix - return Comparator.comparingLong((nextticklistentry) -> { - return ((NextTickListEntry) nextticklistentry).b; // Paper - decompile fix - }).thenComparing((nextticklistentry) -> { - return ((NextTickListEntry) nextticklistentry).c; // Paper - decompile fix - }).thenComparingLong((nextticklistentry) -> { - return ((NextTickListEntry) nextticklistentry).f; // Paper - decompile fix - }); + // Paper start - let's not use more functional code for no reason. + public static Comparator comparator() { return NextTickListEntry.a(); } // Paper - OBFHELPER + public static Comparator a() { + return (Comparator)(Comparator)(NextTickListEntry nextticklistentry, NextTickListEntry nextticklistentry1) -> { + int i = Long.compare(nextticklistentry.getTargetTick(), nextticklistentry1.getTargetTick()); + + if (i != 0) { + return i; + } else { + i = nextticklistentry.getPriority().compareTo(nextticklistentry1.getPriority()); + return i != 0 ? i : Long.compare(nextticklistentry.getId(), nextticklistentry1.getId()); + } + }; } + // Paper end - let's not use more functional code for no reason. public String toString() { return this.e + ": " + this.a + ", " + this.b + ", " + this.c + ", " + this.f; diff --git a/src/main/java/net/minecraft/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java index b38bc67758..9f8818c2d4 100644 --- a/src/main/java/net/minecraft/server/PlayerChunk.java +++ b/src/main/java/net/minecraft/server/PlayerChunk.java @@ -474,7 +474,9 @@ public class PlayerChunk { PlayerChunk.this.isTickingReady = true; - + // Paper start - rewrite ticklistserver + PlayerChunk.this.chunkMap.world.onChunkSetTicking(PlayerChunk.this.location.x, PlayerChunk.this.location.z); + // Paper end - rewrite ticklistserver } }); diff --git a/src/main/java/net/minecraft/server/StructureBoundingBox.java b/src/main/java/net/minecraft/server/StructureBoundingBox.java index dbb565e74d..185658e230 100644 --- a/src/main/java/net/minecraft/server/StructureBoundingBox.java +++ b/src/main/java/net/minecraft/server/StructureBoundingBox.java @@ -4,12 +4,12 @@ import com.google.common.base.MoreObjects; public class StructureBoundingBox { - public int a; - public int b; - public int c; - public int d; - public int e; - public int f; + public int a; public final int getMinX() { return this.a; } // Paper - OBFHELPER + public int b; public final int getMinY() { return this.b; } // Paper - OBFHELPER + public int c; public final int getMinZ() { return this.c; } // Paper - OBFHELPER + public int d; public final int getMaxX() { return this.d; } // Paper - OBFHELPER + public int e; public final int getMaxY() { return this.e; } // Paper - OBFHELPER + public int f; public final int getMaxZ() { return this.f; } // Paper - OBFHELPER public StructureBoundingBox() {} @@ -84,6 +84,7 @@ public class StructureBoundingBox { this.e = 512; } + public final boolean intersects(StructureBoundingBox boundingBox) { return this.b(boundingBox); } // Paper - OBFHELPER public boolean b(StructureBoundingBox structureboundingbox) { return this.d >= structureboundingbox.a && this.a <= structureboundingbox.d && this.f >= structureboundingbox.c && this.c <= structureboundingbox.f && this.e >= structureboundingbox.b && this.b <= structureboundingbox.e; } @@ -114,6 +115,7 @@ public class StructureBoundingBox { return new StructureBoundingBox(this.a + i, this.b + j, this.c + k, this.d + i, this.e + j, this.f + k); } + public final boolean hasPoint(BaseBlockPosition baseblockposition) { return this.b(baseblockposition); } // Paper - OBFHELPER public boolean b(BaseBlockPosition baseblockposition) { return baseblockposition.getX() >= this.a && baseblockposition.getX() <= this.d && baseblockposition.getZ() >= this.c && baseblockposition.getZ() <= this.f && baseblockposition.getY() >= this.b && baseblockposition.getY() <= this.e; } diff --git a/src/main/java/net/minecraft/server/TickListServer.java b/src/main/java/net/minecraft/server/TickListServer.java index f533860bbe..3f1aa5ced6 100644 --- a/src/main/java/net/minecraft/server/TickListServer.java +++ b/src/main/java/net/minecraft/server/TickListServer.java @@ -42,6 +42,11 @@ public class TickListServer implements TickList { // Paper end public void b() { + // Paper start - allow overriding + this.tick(); + } + public void tick() { + // Paper end int i = this.nextTickList.size(); if (false) { // CraftBukkit @@ -109,15 +114,30 @@ public class TickListServer implements TickList { @Override public boolean b(BlockPosition blockposition, T t0) { + // Paper start - allow overriding + return this.isPendingTickThisTick(blockposition, t0); + } + public boolean isPendingTickThisTick(BlockPosition blockposition, T t0) { + // Paper end return this.g.contains(new NextTickListEntry<>(blockposition, t0)); } @Override public void a(Stream> stream) { + // Paper start - allow overriding + this.scheduleAll(stream); + } + public void scheduleAll(Stream> stream) { + // Paper end stream.forEach(this::a); } public List> a(ChunkCoordIntPair chunkcoordintpair, boolean flag, boolean flag1) { + // Paper start - allow overriding + return this.getEntriesInChunk(chunkcoordintpair, flag, flag1); + } + public List> getEntriesInChunk(ChunkCoordIntPair chunkcoordintpair, boolean flag, boolean flag1) { + // Paper end int i = (chunkcoordintpair.x << 4) - 2; int j = i + 16 + 2; int k = (chunkcoordintpair.z << 4) - 2; @@ -127,6 +147,11 @@ public class TickListServer implements TickList { } public List> a(StructureBoundingBox structureboundingbox, boolean flag, boolean flag1) { + // Paper start - allow overriding + return this.getEntriesInBoundingBox(structureboundingbox, flag, flag1); + } + public List> getEntriesInBoundingBox(StructureBoundingBox structureboundingbox, boolean flag, boolean flag1) { + // Paper end List> list = this.a((List) null, this.nextTickList, structureboundingbox, flag); if (flag && list != null) { @@ -166,6 +191,11 @@ public class TickListServer implements TickList { } public void a(StructureBoundingBox structureboundingbox, BlockPosition blockposition) { + // Paper start - allow overriding + this.copy(structureboundingbox, blockposition); + } + public void copy(StructureBoundingBox structureboundingbox, BlockPosition blockposition) { + // Paper end List> list = this.a(structureboundingbox, false, false); Iterator iterator = list.iterator(); @@ -183,11 +213,17 @@ public class TickListServer implements TickList { } public NBTTagList a(ChunkCoordIntPair chunkcoordintpair) { + // Paper start - allow overriding + return this.serialize(chunkcoordintpair); + } + public NBTTagList serialize(ChunkCoordIntPair chunkcoordintpair) { + // Paper end List> list = this.a(chunkcoordintpair, false, true); return a(this.b, list, this.f.getTime()); } + public static NBTTagList serialize(Function function, Iterable> iterable, long i) { return TickListServer.a(function, iterable, i); } // Paper - OBFHELPER public static NBTTagList a(Function function, Iterable> iterable, long i) { NBTTagList nbttaglist = new NBTTagList(); Iterator iterator = iterable.iterator(); @@ -210,11 +246,21 @@ public class TickListServer implements TickList { @Override public boolean a(BlockPosition blockposition, T t0) { + // Paper start - allow overriding + return this.isScheduledForTick(blockposition, t0); + } + public boolean isScheduledForTick(BlockPosition blockposition, T t0) { + // Paper end return this.nextTickListHash.contains(new NextTickListEntry<>(blockposition, t0)); } @Override public void a(BlockPosition blockposition, T t0, int i, TickListPriority ticklistpriority) { + // Paper start - allow overriding + this.schedule(blockposition, t0, i, ticklistpriority); + } + public void schedule(BlockPosition blockposition, T t0, int i, TickListPriority ticklistpriority) { + // Paper end if (!this.a.test(t0)) { this.a(new NextTickListEntry<>(blockposition, t0, (long) i + this.f.getTime(), ticklistpriority)); } @@ -230,6 +276,11 @@ public class TickListServer implements TickList { } public int a() { + // Paper start - allow overriding + return this.getTotalScheduledEntries(); + } + public int getTotalScheduledEntries() { + // Paper end return this.nextTickListHash.size(); } } diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java index eb99819e51..5ba46fca55 100644 --- a/src/main/java/net/minecraft/server/WorldServer.java +++ b/src/main/java/net/minecraft/server/WorldServer.java @@ -170,6 +170,13 @@ public class WorldServer extends World { } // Paper end + // Paper start - rewrite ticklistserver + void onChunkSetTicking(int chunkX, int chunkZ) { + ((com.destroystokyo.paper.server.ticklist.PaperTickList)this.nextTickListBlock).onChunkSetTicking(chunkX, chunkZ); + ((com.destroystokyo.paper.server.ticklist.PaperTickList)this.nextTickListFluid).onChunkSetTicking(chunkX, chunkZ); + } + // Paper end - rewrite ticklistserver + // Add env and gen to constructor public WorldServer(MinecraftServer minecraftserver, Executor executor, WorldNBTStorage worldnbtstorage, WorldData worlddata, DimensionManager dimensionmanager, GameProfilerFiller gameprofilerfiller, WorldLoadListener worldloadlistener, org.bukkit.World.Environment env, org.bukkit.generator.ChunkGenerator gen) { super(worlddata, dimensionmanager, (world, worldprovider) -> { @@ -190,10 +197,10 @@ public class WorldServer extends World { this.pvpMode = minecraftserver.getPVP(); worlddata.world = this; // CraftBukkit end - this.nextTickListBlock = new TickListServer<>(this, (block) -> { + this.nextTickListBlock = new com.destroystokyo.paper.server.ticklist.PaperTickList<>(this, (block) -> { // Paper - optimise TickListServer return block == null || block.getBlockData().isAir(); }, IRegistry.BLOCK::getKey, IRegistry.BLOCK::get, this::b, "Blocks"); // Paper - Timings - this.nextTickListFluid = new TickListServer<>(this, (fluidtype) -> { + this.nextTickListFluid = new com.destroystokyo.paper.server.ticklist.PaperTickList<>(this, (fluidtype) -> { // Paper - optimise TickListServer return fluidtype == null || fluidtype == FluidTypes.EMPTY; }, IRegistry.FLUID::getKey, IRegistry.FLUID::get, this::a, "Fluids"); // Paper - Timings this.navigators = Sets.newHashSet(); -- 2.25.1