aboutsummaryrefslogtreecommitdiffhomepage
path: root/patches/server/0776-Optimise-WorldServer-notify.patch
blob: c1218ac6bdc13ae3ccb3752c486db3d86ad239e9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <spottedleaf@spottedleaf.dev>
Date: Thu, 9 Jul 2020 13:34:59 -0700
Subject: [PATCH] Optimise WorldServer#notify

Iterating over all of the navigators in the world is pretty expensive.
Instead, only iterate over navigators in the current region that are
eligible for repathing.

diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index 86d751738ae82257b527f01b805c30d055ac85c9..7cd99b894914404be9be3a58b1ec83dc08538929 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -283,15 +283,81 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
     public final io.papermc.paper.chunk.SingleThreadChunkRegionManager dataRegionManager;
 
     public static final class DataRegionData implements io.papermc.paper.chunk.SingleThreadChunkRegionManager.RegionData {
+        // Paper start - optimise notify()
+        private io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet<Mob> navigators;
+
+        public io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet<Mob> getNavigators() {
+            return this.navigators;
+        }
+
+        public boolean addToNavigators(final Mob navigator) {
+            if (this.navigators == null) {
+                this.navigators = new io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet<>();
+            }
+            return this.navigators.add(navigator);
+        }
+
+        public boolean removeFromNavigators(final Mob navigator) {
+            if (this.navigators == null) {
+                return false;
+            }
+            return this.navigators.remove(navigator);
+        }
+        // Paper end - optimise notify()
     }
 
     public static final class DataRegionSectionData implements io.papermc.paper.chunk.SingleThreadChunkRegionManager.RegionSectionData {
 
+        // Paper start - optimise notify()
+        private io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet<Mob> navigators;
+
+        public io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet<Mob> getNavigators() {
+            return this.navigators;
+        }
+
+        public boolean addToNavigators(final io.papermc.paper.chunk.SingleThreadChunkRegionManager.RegionSection section, final Mob navigator) {
+            if (this.navigators == null) {
+                this.navigators = new io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet<>();
+            }
+            final boolean ret = this.navigators.add(navigator);
+            if (ret) {
+                final DataRegionData data = (DataRegionData)section.getRegion().regionData;
+                if (!data.addToNavigators(navigator)) {
+                    throw new IllegalStateException();
+                }
+            }
+            return ret;
+        }
+
+        public boolean removeFromNavigators(final io.papermc.paper.chunk.SingleThreadChunkRegionManager.RegionSection section, final Mob navigator) {
+            if (this.navigators == null) {
+                return false;
+            }
+            final boolean ret = this.navigators.remove(navigator);
+            if (ret) {
+                final DataRegionData data = (DataRegionData)section.getRegion().regionData;
+                if (!data.removeFromNavigators(navigator)) {
+                    throw new IllegalStateException();
+                }
+            }
+            return ret;
+        }
+        // Paper end - optimise notify()
+
         @Override
         public void removeFromRegion(final io.papermc.paper.chunk.SingleThreadChunkRegionManager.RegionSection section,
                                      final io.papermc.paper.chunk.SingleThreadChunkRegionManager.Region from) {
             final DataRegionSectionData sectionData = (DataRegionSectionData)section.sectionData;
             final DataRegionData fromData = (DataRegionData)from.regionData;
+            // Paper start - optimise notify()
+            if (sectionData.navigators != null) {
+                for (final Iterator<Mob> iterator = sectionData.navigators.unsafeIterator(io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet.ITERATOR_FLAG_SEE_ADDITIONS); iterator.hasNext();) {
+                    if (!fromData.removeFromNavigators(iterator.next())) {
+                        throw new IllegalStateException();
+                    }
+                }
+            }
+            // Paper end - optimise notify()
         }
 
         @Override
@@ -301,6 +367,15 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
             final DataRegionSectionData sectionData = (DataRegionSectionData)section.sectionData;
             final DataRegionData oldRegionData = oldRegion == null ? null : (DataRegionData)oldRegion.regionData;
             final DataRegionData newRegionData = (DataRegionData)newRegion.regionData;
+            // Paper start - optimise notify()
+            if (sectionData.navigators != null) {
+                for (final Iterator<Mob> iterator = sectionData.navigators.unsafeIterator(io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet.ITERATOR_FLAG_SEE_ADDITIONS); iterator.hasNext();) {
+                    if (!newRegionData.addToNavigators(iterator.next())) {
+                        throw new IllegalStateException();
+                    }
+                }
+            }
+            // Paper end - optimise notify()
         }
     }
 
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 0918bb28fd058e6b79f45993a46738a50b05b60a..f17c0f501c89c07651a40673ad5ecfe6c7168fce 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -1093,6 +1093,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
     public void tickNonPassenger(Entity entity) {
         // Paper start - log detailed entity tick information
         io.papermc.paper.util.TickThread.ensureTickThread("Cannot tick an entity off-main");
+        this.entityManager.updateNavigatorsInRegion(entity); // Paper - optimise notify
         try {
             if (currentlyTickingEntity.get() == null) {
                 currentlyTickingEntity.lazySet(entity);
@@ -1545,9 +1546,18 @@ public class ServerLevel extends Level implements WorldGenLevel {
 
         if (Shapes.joinIsNotEmpty(voxelshape, voxelshape1, BooleanOp.NOT_SAME)) {
             List<PathNavigation> list = new ObjectArrayList();
-            Iterator iterator = this.navigatingMobs.iterator();
+            // Paper start - optimise notify()
+            io.papermc.paper.chunk.SingleThreadChunkRegionManager.Region region = this.getChunkSource().chunkMap.dataRegionManager.getRegion(pos.getX() >> 4, pos.getZ() >> 4);
+            if (region == null) {
+                return;
+            }
+            io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet<Mob> navigatorsFromRegion = ((ChunkMap.DataRegionData)region.regionData).getNavigators();
+            if (navigatorsFromRegion == null) {
+                return;
+            }
+            io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet.Iterator<Mob> iterator = navigatorsFromRegion.iterator();
 
-            while (iterator.hasNext()) {
+            try { while (iterator.hasNext()) { // Paper end - optimise notify()
                 // CraftBukkit start - fix SPIGOT-6362
                 Mob entityinsentient;
                 try {
@@ -1569,16 +1579,23 @@ public class ServerLevel extends Level implements WorldGenLevel {
 
             try {
                 this.isUpdatingNavigations = true;
-                iterator = list.iterator();
+                // Paper start - optimise notify()
+                Iterator<PathNavigation> navigationIterator = list.iterator();
 
-                while (iterator.hasNext()) {
-                    PathNavigation navigationabstract1 = (PathNavigation) iterator.next();
+                while (navigationIterator.hasNext()) {
+                    PathNavigation navigationabstract1 = navigationIterator.next();
+                    // Paper end - optimise notify()
 
                     navigationabstract1.recomputePath();
                 }
             } finally {
                 this.isUpdatingNavigations = false;
             }
+            // Paper start - optimise notify()
+            } finally {
+                iterator.finishedIterating();
+            }
+            // Paper end - optimise notify()
 
         }
         } // Paper
@@ -2374,10 +2391,12 @@ public class ServerLevel extends Level implements WorldGenLevel {
 
         public void onTickingStart(Entity entity) {
             ServerLevel.this.entityTickList.add(entity);
+            ServerLevel.this.entityManager.addNavigatorsIfPathingToRegion(entity); // Paper - optimise notify
         }
 
         public void onTickingEnd(Entity entity) {
             ServerLevel.this.entityTickList.remove(entity);
+            ServerLevel.this.entityManager.removeNavigatorsFromData(entity); // Paper - optimise notify
         }
 
         public void onTrackingStart(Entity entity) {
diff --git a/src/main/java/net/minecraft/world/entity/ai/navigation/PathNavigation.java b/src/main/java/net/minecraft/world/entity/ai/navigation/PathNavigation.java
index b06789336098233b642b769b0fd60e740459874c..792366024a0d2a39e1d63509bbf0da51c973bdcf 100644
--- a/src/main/java/net/minecraft/world/entity/ai/navigation/PathNavigation.java
+++ b/src/main/java/net/minecraft/world/entity/ai/navigation/PathNavigation.java
@@ -27,7 +27,7 @@ import net.minecraft.world.phys.Vec3;
 
 public abstract class PathNavigation {
     private static final int MAX_TIME_RECOMPUTE = 20;
-    protected final Mob mob;
+    protected final Mob mob; public final Mob getEntity() { return this.mob; } // Paper - public accessor
     protected final Level level;
     @Nullable
     protected Path path;
@@ -40,7 +40,7 @@ public abstract class PathNavigation {
     protected long lastTimeoutCheck;
     protected double timeoutLimit;
     protected float maxDistanceToWaypoint = 0.5F;
-    protected boolean hasDelayedRecomputation;
+    protected boolean hasDelayedRecomputation; protected final boolean needsPathRecalculation() { return this.hasDelayedRecomputation; } // Paper - public accessor
     protected long timeLastRecompute;
     protected NodeEvaluator nodeEvaluator;
     @Nullable
@@ -50,6 +50,13 @@ public abstract class PathNavigation {
     public final PathFinder pathFinder;
     private boolean isStuck;
 
+    // Paper start
+    public boolean isViableForPathRecalculationChecking() {
+        return !this.needsPathRecalculation() &&
+                (this.path != null && !this.path.isDone() && this.path.getNodeCount() != 0);
+    }
+    // Paper end
+
     public PathNavigation(Mob mob, Level world) {
         this.mob = mob;
         this.level = world;
@@ -413,7 +420,7 @@ public abstract class PathNavigation {
     public boolean shouldRecomputePath(BlockPos pos) {
         if (this.hasDelayedRecomputation) {
             return false;
-        } else if (this.path != null && !this.path.isDone() && this.path.getNodeCount() != 0) {
+        } else if (this.path != null && !this.path.isDone() && this.path.getNodeCount() != 0) { // Paper - diff on change - needed for isViableForPathRecalculationChecking()
             Node node = this.path.getEndNode();
             Vec3 vec3 = new Vec3(((double)node.x + this.mob.getX()) / 2.0D, ((double)node.y + this.mob.getY()) / 2.0D, ((double)node.z + this.mob.getZ()) / 2.0D);
             return pos.closerThan(vec3, (double)(this.path.getNodeCount() - this.path.getNextNodeIndex()));
diff --git a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
index a0c66689c954823e7c20664594557dc26afbd246..21f3c8a2fe91ff47486b4c63f2b3f1d54f83fdb6 100644
--- a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
+++ b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
@@ -71,6 +71,65 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
     }
     // CraftBukkit end
 
+    // Paper start - optimise notify()
+    public final void removeNavigatorsFromData(Entity entity, final int chunkX, final int chunkZ) {
+        if (!(entity instanceof net.minecraft.world.entity.Mob)) {
+            return;
+        }
+        io.papermc.paper.chunk.SingleThreadChunkRegionManager.RegionSection section =
+            this.entitySliceManager.world.getChunkSource().chunkMap.dataRegionManager.getRegionSection(chunkX, chunkZ);
+        if (section != null) {
+            net.minecraft.server.level.ChunkMap.DataRegionSectionData sectionData = (net.minecraft.server.level.ChunkMap.DataRegionSectionData)section.sectionData;
+            sectionData.removeFromNavigators(section, ((net.minecraft.world.entity.Mob)entity));
+        }
+    }
+
+    public final void removeNavigatorsFromData(Entity entity) {
+        if (!(entity instanceof net.minecraft.world.entity.Mob)) {
+            return;
+        }
+        BlockPos entityPos = entity.blockPosition();
+        io.papermc.paper.chunk.SingleThreadChunkRegionManager.RegionSection section =
+            this.entitySliceManager.world.getChunkSource().chunkMap.dataRegionManager.getRegionSection(entityPos.getX() >> 4, entityPos.getZ() >> 4);
+        if (section != null) {
+            net.minecraft.server.level.ChunkMap.DataRegionSectionData sectionData = (net.minecraft.server.level.ChunkMap.DataRegionSectionData)section.sectionData;
+            sectionData.removeFromNavigators(section, ((net.minecraft.world.entity.Mob)entity));
+        }
+    }
+
+    public final void addNavigatorsIfPathingToRegion(Entity entity) {
+        if (!(entity instanceof net.minecraft.world.entity.Mob)) {
+            return;
+        }
+        BlockPos entityPos = entity.blockPosition();
+        io.papermc.paper.chunk.SingleThreadChunkRegionManager.RegionSection section =
+            this.entitySliceManager.world.getChunkSource().chunkMap.dataRegionManager.getRegionSection(entityPos.getX() >> 4, entityPos.getZ() >> 4);
+        if (section != null) {
+            net.minecraft.server.level.ChunkMap.DataRegionSectionData sectionData = (net.minecraft.server.level.ChunkMap.DataRegionSectionData)section.sectionData;
+            if (((net.minecraft.world.entity.Mob)entity).getNavigation().isViableForPathRecalculationChecking()) {
+                sectionData.addToNavigators(section, ((net.minecraft.world.entity.Mob)entity));
+            }
+        }
+    }
+
+    public final void updateNavigatorsInRegion(Entity entity) {
+        if (!(entity instanceof net.minecraft.world.entity.Mob)) {
+            return;
+        }
+        BlockPos entityPos = entity.blockPosition();
+        io.papermc.paper.chunk.SingleThreadChunkRegionManager.RegionSection section =
+            this.entitySliceManager.world.getChunkSource().chunkMap.dataRegionManager.getRegionSection(entityPos.getX() >> 4, entityPos.getZ() >> 4);
+        if (section != null) {
+            net.minecraft.server.level.ChunkMap.DataRegionSectionData sectionData = (net.minecraft.server.level.ChunkMap.DataRegionSectionData)section.sectionData;
+            if (((net.minecraft.world.entity.Mob)entity).getNavigation().isViableForPathRecalculationChecking()) {
+                sectionData.addToNavigators(section, ((net.minecraft.world.entity.Mob)entity));
+            } else {
+                sectionData.removeFromNavigators(section, ((net.minecraft.world.entity.Mob)entity));
+            }
+        }
+    }
+    // Paper end - optimise notify()
+
     void removeSectionIfEmpty(long sectionPos, EntitySection<T> section) {
         if (section.isEmpty()) {
             this.sectionStorage.remove(sectionPos);
@@ -456,11 +515,25 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
         @Override
         public void onMove() {
             BlockPos blockposition = this.entity.blockPosition();
-            long i = SectionPos.asLong(blockposition);
+            long i = SectionPos.asLong(blockposition); final long newSectionPos = i; // Paper - diff on change, new position section
 
             if (i != this.currentSectionKey) {
                 PersistentEntitySectionManager.this.entitySliceManager.moveEntity((Entity)this.entity); // Paper
-                Visibility visibility = this.currentSection.getStatus();
+                Visibility visibility = this.currentSection.getStatus(); final Visibility oldVisibility = visibility; // Paper - diff on change - this should be OLD section visibility
+                // Paper start
+                int shift = PersistentEntitySectionManager.this.entitySliceManager.world.getChunkSource().chunkMap.dataRegionManager.regionChunkShift;
+                int oldChunkX = io.papermc.paper.util.CoordinateUtils.getChunkSectionX(this.currentSectionKey);
+                int oldChunkZ = io.papermc.paper.util.CoordinateUtils.getChunkSectionZ(this.currentSectionKey);
+                int oldRegionX = oldChunkX >> shift;
+                int oldRegionZ = oldChunkZ >> shift;
+
+                int newRegionX = io.papermc.paper.util.CoordinateUtils.getChunkSectionX(newSectionPos) >> shift;
+                int newRegionZ = io.papermc.paper.util.CoordinateUtils.getChunkSectionZ(newSectionPos) >> shift;
+
+                if (oldRegionX != newRegionX || oldRegionZ != newRegionZ) {
+                    PersistentEntitySectionManager.this.removeNavigatorsFromData((Entity)this.entity, oldChunkX, oldChunkZ);
+                }
+                // Paper end
 
                 if (!this.currentSection.remove(this.entity)) {
                     PersistentEntitySectionManager.LOGGER.warn("Entity {} wasn't found in section {} (moving to {})", this.entity, SectionPos.of(this.currentSectionKey), i);
@@ -472,6 +545,11 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
                 entitysection.add(this.entity);
                 this.currentSection = entitysection;
                 this.currentSectionKey = i;
+                // Paper start
+                if ((oldRegionX != newRegionX || oldRegionZ != newRegionZ) && oldVisibility.isTicking() && entitysection.getStatus().isTicking()) {
+                    PersistentEntitySectionManager.this.addNavigatorsIfPathingToRegion((Entity)this.entity);
+                }
+                // Paper end
                 this.updateStatus(visibility, entitysection.getStatus());
             }