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Restore Pathfinder Optimizations from 1.15.2

Quellcode durchsuchen 
We dropped the patch in 1.16.1 update due to it being a major conflict.
This restores it.

Co-Authored-By: Aikar <aikar@aikar.co>
Dieser Commit ist enthalten in:
Mariell Hoversholm 2020-08-06 22:51:29 -04:00 committet von Daniel Ennis
Ursprung adadf16548
Commit b91d964b17
2 geänderte Dateien mit 134 neuen und 162 gelöschten Zeilen
Statistiken anzeigen Patch-Datei herunterladen Vergleichs-Datei herunterladen Alle Dateien ausklappen Alle Dateien einklappen

134
Spigot-Server-Patches/0550-Optimize-Pathfinder-Remove-Streams-Optimized-collect.patch Normale Datei
Datei anzeigen

@ -0,0 +1,134 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 4 Aug 2020 22:24:15 +0200
Subject: [PATCH] Optimize Pathfinder - Remove Streams / Optimized collections
I utilized the IDE to convert streams to non streams code, so shouldn't
be any risk of behavior change. Only did minor optimization of the
generated code set to remove unnecessary things.
I expect us to just drop this patch on next major update and re-apply
it with the IDE again and re-apply the collections optimization.
Optimize collection by creating a list instead of a set of the key and value.
This lets us get faster foreach iteration, as well as avoids map lookups on
the values when needed.
diff --git a/src/main/java/net/minecraft/server/Pathfinder.java b/src/main/java/net/minecraft/server/Pathfinder.java
index b31d1f73ce0f067e352868b53eab7557c34b17eb..997982136cdd2a0d922e501473e0d4d1aabf567a 100644
--- a/src/main/java/net/minecraft/server/Pathfinder.java
+++ b/src/main/java/net/minecraft/server/Pathfinder.java
@@ -30,9 +30,12 @@ public class Pathfinder {
this.d.a();
this.c.a(chunkcache, entityinsentient);
PathPoint pathpoint = this.c.b();
- Map<PathDestination, BlockPosition> map = (Map) set.stream().collect(Collectors.toMap((blockposition) -> {
- return this.c.a((double) blockposition.getX(), (double) blockposition.getY(), (double) blockposition.getZ());
- }, Function.identity()));
+ // Paper start - remove streams - and optimize collection
+ List<Map.Entry<PathDestination, BlockPosition>> map = Lists.newArrayList();
+ for (BlockPosition blockposition : set) {
+ map.add(new java.util.AbstractMap.SimpleEntry<>(this.c.a((double) blockposition.getX(), blockposition.getY(), blockposition.getZ()), blockposition));
+ }
+ // Paper end
PathEntity pathentity = this.a(pathpoint, map, f, i, f1);
this.c.a();
@@ -40,17 +43,17 @@ public class Pathfinder {
}
@Nullable
- private PathEntity a(PathPoint pathpoint, Map<PathDestination, BlockPosition> map, float f, int i, float f1) {
- Set<PathDestination> set = map.keySet();
+ private PathEntity a(PathPoint pathpoint, List<Map.Entry<PathDestination, BlockPosition>> list, float f, int i, float f1) { // Paper - optimize collection
+ //Set<PathDestination> set = map.keySet(); // Paper
pathpoint.e = 0.0F;
- pathpoint.f = this.a(pathpoint, set);
+ pathpoint.f = this.a(pathpoint, list); // Paper - optimize collection
pathpoint.g = pathpoint.f;
this.d.a();
this.d.a(pathpoint);
Set<PathPoint> set1 = ImmutableSet.of();
int j = 0;
- Set<PathDestination> set2 = Sets.newHashSetWithExpectedSize(set.size());
+ List<Map.Entry<PathDestination, BlockPosition>> set2 = Lists.newArrayListWithExpectedSize(list.size()); // Paper - optimize collection
int k = (int) ((float) this.b * f1);
while (!this.d.e()) {
@@ -62,14 +65,15 @@ public class Pathfinder {
PathPoint pathpoint1 = this.d.c();
pathpoint1.i = true;
- Iterator iterator = set.iterator();
-
- while (iterator.hasNext()) {
- PathDestination pathdestination = (PathDestination) iterator.next();
+ // Paper start - optimize collection
+ for (int i1 = 0; i1 < list.size(); i1++) {
+ Map.Entry<PathDestination, BlockPosition> entry = list.get(i1);
+ PathDestination pathdestination = entry.getKey();
if (pathpoint1.c((PathPoint) pathdestination) <= (float) i) {
pathdestination.e();
- set2.add(pathdestination);
+ set2.add(entry);
+ // Paper end
}
}
@@ -90,7 +94,7 @@ public class Pathfinder {
if (pathpoint2.j < f && (!pathpoint2.c() || f3 < pathpoint2.e)) {
pathpoint2.h = pathpoint1;
pathpoint2.e = f3;
- pathpoint2.f = this.a(pathpoint2, set) * 1.5F;
+ pathpoint2.f = this.a(pathpoint2, list) * 1.5F; // Paper - list instead of set
if (pathpoint2.c()) {
this.d.a(pathpoint2, pathpoint2.e + pathpoint2.f);
} else {
@@ -102,28 +106,29 @@ public class Pathfinder {
}
}
- Optional<PathEntity> optional = !set2.isEmpty() ? set2.stream().map((pathdestination1) -> {
- return this.a(pathdestination1.d(), (BlockPosition) map.get(pathdestination1), true);
- }).min(Comparator.comparingInt(PathEntity::e)) : set.stream().map((pathdestination1) -> {
- return this.a(pathdestination1.d(), (BlockPosition) map.get(pathdestination1), false);
- }).min(Comparator.comparingDouble(PathEntity::n).thenComparingInt(PathEntity::e));
-
- if (!optional.isPresent()) {
- return null;
- } else {
- PathEntity pathentity = (PathEntity) optional.get();
-
- return pathentity;
+ // Paper start - remove streams - and optimize collection
+ PathEntity best = null;
+ boolean useSet1 = set2.isEmpty();
+ Comparator<PathEntity> comparator = useSet1 ? Comparator.comparingInt(PathEntity::e)
+ : Comparator.comparingDouble(PathEntity::n).thenComparingInt(PathEntity::e);
+ for (Map.Entry<PathDestination, BlockPosition> entry : useSet1 ? list : set2) {
+ PathEntity pathEntity = this.a(entry.getKey().d(), entry.getValue(), !useSet1);
+ if (best == null || comparator.compare(pathEntity, best) < 0)
+ best = pathEntity;
}
+ return best;
+ // Paper end
}
- private float a(PathPoint pathpoint, Set<PathDestination> set) {
+ private float a(PathPoint pathpoint, List<Map.Entry<PathDestination, BlockPosition>> list) { // Paper - optimize collection
float f = Float.MAX_VALUE;
float f1;
- for (Iterator iterator = set.iterator(); iterator.hasNext(); f = Math.min(f1, f)) {
- PathDestination pathdestination = (PathDestination) iterator.next();
+ // Paper start - optimize collection
+ for (int i = 0, listSize = list.size(); i < listSize; f = Math.min(f1, f), i++) { // Paper
+ PathDestination pathdestination = list.get(i).getKey(); // Paper
+ // Paper end
f1 = pathpoint.a(pathdestination);
pathdestination.a(f1, pathpoint);

162
removed/1.16/0518-Optimize-Pathfinder-Remove-Streams-Optimized-collect.patch
Datei anzeigen

@ -1,162 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 11 May 2020 04:18:54 -0400
Subject: [PATCH] Optimize Pathfinder - Remove Streams / Optimized collections
I utilized the IDE to convert streams to non streams code, so shouldn't
be any risk of behavior change. Only did minor optimization of the
generated code set to remove unnecessary things.
I expect us to just drop this patch on next major update and re-apply
it with the IDE again and re-apply the collections optimization.
Optimize collection by creating a list instead of a set of the key and value.
This lets us get faster foreach iteration, as well as avoids map lookups on
the values when needed.
diff --git a/src/main/java/net/minecraft/server/Pathfinder.java b/src/main/java/net/minecraft/server/Pathfinder.java
index 67c63cfe333e328cbd00ada970bd81efebfe30b6..71b96943d865105f279dda613b7ac6b3ffed793b 100644
--- a/src/main/java/net/minecraft/server/Pathfinder.java
+++ b/src/main/java/net/minecraft/server/Pathfinder.java
@@ -31,9 +31,15 @@ public class Pathfinder {
this.a.a();
this.e.a(chunkcache, entityinsentient);
PathPoint pathpoint = this.e.b();
- Map<PathDestination, BlockPosition> map = (Map) set.stream().collect(Collectors.toMap((blockposition) -> {
- return this.e.a((double) blockposition.getX(), (double) blockposition.getY(), (double) blockposition.getZ());
- }, Function.identity()));
+ // Paper start - remove streams - and optimize collection
+ List<Map.Entry<PathDestination, BlockPosition>> map = new java.util.ArrayList<>();
+ for (BlockPosition blockposition : set) {
+ // cast is important
+ //noinspection RedundantCast
+ PathDestination path = this.e.a((double) blockposition.getX(), (double) blockposition.getY(), (double) blockposition.getZ());
+ map.add(new java.util.AbstractMap.SimpleEntry<>(path, blockposition));
+ }
+ // Paper end
PathEntity pathentity = this.a(pathpoint, map, f, i, f1);
this.e.a();
@@ -41,11 +47,11 @@ public class Pathfinder {
}
@Nullable
- private PathEntity a(PathPoint pathpoint, Map<PathDestination, BlockPosition> map, float f, int i, float f1) {
- Set<PathDestination> set = map.keySet();
+ private PathEntity a(PathPoint pathpoint, java.util.List<java.util.Map.Entry<PathDestination, BlockPosition>> list, float f, int i, float f1) { // Paper - list instead of set
+ //Set<PathDestination> set = map.keySet(); // Paper
pathpoint.e = 0.0F;
- pathpoint.f = this.a(pathpoint, set);
+ pathpoint.f = this.a(pathpoint, list); // Paper - list instead of map
pathpoint.g = pathpoint.f;
this.a.a();
this.b.clear();
@@ -62,10 +68,23 @@ public class Pathfinder {
PathPoint pathpoint1 = this.a.c();
pathpoint1.i = true;
- set.stream().filter((pathdestination) -> {
- return pathpoint1.c((PathPoint) pathdestination) <= (float) i;
- }).forEach(PathDestination::e);
- if (set.stream().anyMatch(PathDestination::f)) {
+ // Paper start - remove streams
+ for (int i1 = 0, listSize = list.size(); i1 < listSize; i1++) {
+ PathDestination pathdestination = list.get(i1).getKey();
+ if (pathpoint1.c(pathdestination) <= (float) i) {
+ pathdestination.e();
+ }
+ }
+ boolean result = false;
+ for (int i1 = 0, listSize = list.size(); i1 < listSize; i1++) {
+ PathDestination pathdestination = list.get(i1).getKey();
+ if (pathdestination.f()) {
+ result = true;
+ break;
+ }
+ }
+ if (result) {
+ // Paper end
break;
}
@@ -82,7 +101,7 @@ public class Pathfinder {
if (pathpoint2.j < f && (!pathpoint2.c() || f3 < pathpoint2.e)) {
pathpoint2.h = pathpoint1;
pathpoint2.e = f3;
- pathpoint2.f = this.a(pathpoint2, set) * 1.5F;
+ pathpoint2.f = this.a(pathpoint2, list) * 1.5F; // Paper - use list instead of map
if (pathpoint2.c()) {
this.a.a(pathpoint2, pathpoint2.e + pathpoint2.f);
} else {
@@ -94,36 +113,49 @@ public class Pathfinder {
}
}
- Stream stream;
- if (set.stream().anyMatch(PathDestination::f)) {
- stream = set.stream().filter(PathDestination::f).map((pathdestination) -> {
- return this.a(pathdestination.d(), (BlockPosition) map.get(pathdestination), true);
- }).sorted(Comparator.comparingInt(PathEntity::e));
- } else {
- stream = set.stream().map((pathdestination) -> {
- return this.a(pathdestination.d(), (BlockPosition) map.get(pathdestination), false);
- }).sorted(Comparator.comparingDouble(PathEntity::l).thenComparingInt(PathEntity::e));
+ // Paper start - remove streams
+ boolean result = false;
+ for (int i1 = 0, listSize = list.size(); i1 < listSize; i1++) {
+ PathDestination pathDestination = list.get(i1).getKey(); // Paper
+ if (pathDestination.f()) {
+ result = true;
+ break;
+ }
}
-
- Optional<PathEntity> optional = stream.findFirst();
-
- if (!optional.isPresent()) {
- return null;
+ List<PathEntity> candidates = new java.util.ArrayList<>();
+ if (result) {
+ for (int i1 = 0, listSize = list.size(); i1 < listSize; i1++) {
+ Map.Entry<PathDestination, BlockPosition> entry = list.get(i1);
+ PathDestination pathdestination = entry.getKey();
+ if (pathdestination.f()) {
+ PathEntity pathEntity = this.a(pathdestination.d(), entry.getValue(), true);
+ candidates.add(pathEntity);
+ }
+ }
+ if (candidates.isEmpty()) return null;
+ candidates.sort(Comparator.comparingInt(PathEntity::e));
} else {
- PathEntity pathentity = (PathEntity) optional.get();
-
- return pathentity;
+ for (int i1 = 0, listSize = list.size(); i1 < listSize; i1++) {
+ Map.Entry<PathDestination, BlockPosition> entry = list.get(i1);
+ PathDestination pathdestination = entry.getKey();
+ PathEntity pathEntity = this.a(pathdestination.d(), entry.getValue(), false);
+ candidates.add(pathEntity);
+ }
+ if (candidates.isEmpty()) return null;
+ candidates.sort(Comparator.comparingDouble(PathEntity::l).thenComparingInt(PathEntity::e));
}
+ return candidates.get(0);
+ // Paper end
}
- private float a(PathPoint pathpoint, Set<PathDestination> set) {
+ private float a(PathPoint pathpoint, java.util.List<java.util.Map.Entry<PathDestination, BlockPosition>> list) {
float f = Float.MAX_VALUE;
float f1;
- for (Iterator iterator = set.iterator(); iterator.hasNext(); f = Math.min(f1, f)) {
- PathDestination pathdestination = (PathDestination) iterator.next();
+ for (int i = 0, listSize = list.size(); i < listSize; f = Math.min(f1, f), i++) { // Paper
+ PathDestination pathdestination = list.get(i).getKey(); // Paper
f1 = pathpoint.a(pathdestination);
pathdestination.a(f1, pathpoint);