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geforkt von Mirrors/Paper
Paper/Spigot-Server-Patches/0259-Speedup-BlockPos-by-fixing-inlining.patch
Shane Freeder 0708fa363b
Updated Upstream (CraftBukkit/Spigot)
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

CraftBukkit Changes:
eb2e6578 SPIGOT-5116: Fix concurrent modification exception inside ChunkMapDistance
989f9b3d SPIGOT-4849: Fix server crash when accessing chunks during chunk load/unload/populate events
f554183c SPIGOT-5171: Don't fire PlayerTeleportEvent if not actually moving
2349feb8 SPIGOT-5163: Cancelling PlayerBucketFillEvent visually removes the targeted block

Spigot Changes:
9a643a6a Remove DataWatcher Locking
2019-07-16 23:09:32 +01:00

209 Zeilen
8.3 KiB
Diff

From 100f4c3bee91ea3350a9f2a513493af2cb3bbd5b Mon Sep 17 00:00:00 2001
From: Techcable <Techcable@outlook.com>
Date: Wed, 30 Nov 2016 20:56:58 -0600
Subject: [PATCH] Speedup BlockPos by fixing inlining
Normally the JVM can inline virtual getters by having two sets of code, one is the 'optimized' code and the other is the 'deoptimized' code.
If a single type is used 99% of the time, then its worth it to inline, and to revert to 'deoptimized' the 1% of the time we encounter other types.
But if two types are encountered commonly, then the JVM can't inline them both, and the call overhead remains.
This scenario also occurs with BlockPos and MutableBlockPos.
The variables in BlockPos are final, so MutableBlockPos can't modify them.
MutableBlockPos fixes this by adding custom mutable variables, and overriding the getters to access them.
This approach with utility methods that operate on MutableBlockPos and BlockPos.
Specific examples are BlockPosition.up(), and World.isValidLocation().
It makes these simple methods much slower than they need to be.
This should result in an across the board speedup in anything that accesses blocks or does logic with positions.
This is based upon conclusions drawn from inspecting the assenmbly generated bythe JIT compiler on my mircorbenchmarks.
They had 'callq' (invoke) instead of 'mov' (get from memory) instructions.
diff --git a/src/main/java/net/minecraft/server/BaseBlockPosition.java b/src/main/java/net/minecraft/server/BaseBlockPosition.java
index 7cb46d7a9..e96428bb2 100644
--- a/src/main/java/net/minecraft/server/BaseBlockPosition.java
+++ b/src/main/java/net/minecraft/server/BaseBlockPosition.java
@@ -7,22 +7,22 @@ import javax.annotation.concurrent.Immutable;
public class BaseBlockPosition implements Comparable<BaseBlockPosition> {
public static final BaseBlockPosition ZERO = new BaseBlockPosition(0, 0, 0);
- private final int a;
- private final int b;
- private final int c;
// Paper start
+ protected int x;
+ protected int y;
+ protected int z;
public boolean isValidLocation() {
- return a >= -30000000 && c >= -30000000 && a < 30000000 && c < 30000000 && b >= 0 && b < 256;
+ return x >= -30000000 && z >= -30000000 && x < 30000000 && z < 30000000 && y >= 0 && y < 256;
}
public boolean isInvalidYLocation() {
- return b < 0 || b >= 256;
+ return y < 0 || y >= 256;
}
// Paper end
public BaseBlockPosition(int i, int j, int k) {
- this.a = i;
- this.b = j;
- this.c = k;
+ this.x = i;
+ this.y = j;
+ this.z = k;
}
public BaseBlockPosition(double d0, double d1, double d2) {
@@ -49,24 +49,26 @@ public class BaseBlockPosition implements Comparable<BaseBlockPosition> {
return this.getY() == baseblockposition.getY() ? (this.getZ() == baseblockposition.getZ() ? this.getX() - baseblockposition.getX() : this.getZ() - baseblockposition.getZ()) : this.getY() - baseblockposition.getY();
}
- public int getX() {
- return this.a;
+ // Paper start
+ public final int getX() {
+ return this.x;
}
public int getY() {
- return this.b;
+ return this.y;
}
public int getZ() {
- return this.c;
+ return this.z;
}
+ // Paper end
public BaseBlockPosition d(BaseBlockPosition baseblockposition) {
return new BaseBlockPosition(this.getY() * baseblockposition.getZ() - this.getZ() * baseblockposition.getY(), this.getZ() * baseblockposition.getX() - this.getX() * baseblockposition.getZ(), this.getX() * baseblockposition.getY() - this.getY() * baseblockposition.getX());
}
public boolean a(BaseBlockPosition baseblockposition, double d0) {
- return this.distanceSquared((double) baseblockposition.a, (double) baseblockposition.b, (double) baseblockposition.c, false) < d0 * d0;
+ return this.distanceSquared((double) baseblockposition.x, (double) baseblockposition.y, (double) baseblockposition.z, false) < d0 * d0; // Paper
}
public boolean a(IPosition iposition, double d0) {
@@ -91,9 +93,9 @@ public class BaseBlockPosition implements Comparable<BaseBlockPosition> {
}
public int n(BaseBlockPosition baseblockposition) {
- float f = (float) Math.abs(baseblockposition.getX() - this.a);
- float f1 = (float) Math.abs(baseblockposition.getY() - this.b);
- float f2 = (float) Math.abs(baseblockposition.getZ() - this.c);
+ float f = (float) Math.abs(baseblockposition.getX() - this.x); // Paper
+ float f1 = (float) Math.abs(baseblockposition.getY() - this.y); // Paper
+ float f2 = (float) Math.abs(baseblockposition.getZ() - this.z); // Paper
return (int) (f + f1 + f2);
}
diff --git a/src/main/java/net/minecraft/server/BlockPosition.java b/src/main/java/net/minecraft/server/BlockPosition.java
index 2eabaaeba..04f754d2c 100644
--- a/src/main/java/net/minecraft/server/BlockPosition.java
+++ b/src/main/java/net/minecraft/server/BlockPosition.java
@@ -335,11 +335,12 @@ public class BlockPosition extends BaseBlockPosition implements MinecraftSeriali
}
public static class MutableBlockPosition extends BlockPosition {
-
+ // Paper start - comment out
+ /*
protected int b;
protected int c;
protected int d;
- // Paper start
+
@Override
public boolean isValidLocation() {
return b >= -30000000 && d >= -30000000 && b < 30000000 && d < 30000000 && c >= 0 && c < 256;
@@ -348,6 +349,7 @@ public class BlockPosition extends BaseBlockPosition implements MinecraftSeriali
public boolean isInvalidYLocation() {
return c < 0 || c >= 256;
}
+ */
// Paper end
public MutableBlockPosition() {
@@ -359,10 +361,13 @@ public class BlockPosition extends BaseBlockPosition implements MinecraftSeriali
}
public MutableBlockPosition(int i, int j, int k) {
- super(0, 0, 0);
+ // Paper start
+ super(i, j, k);
+ /*
this.b = i;
this.c = j;
- this.d = k;
+ this.d = k;*/
+ // Paper end
}
public MutableBlockPosition(double d0, double d1, double d2) {
@@ -389,6 +394,9 @@ public class BlockPosition extends BaseBlockPosition implements MinecraftSeriali
return super.a(enumblockrotation).immutableCopy();
}
+
+ /*
+ // Paper start - use parent getters
@Override
public int getX() {
return this.b;
@@ -402,13 +410,16 @@ public class BlockPosition extends BaseBlockPosition implements MinecraftSeriali
@Override
public int getZ() {
return this.d;
- }
+ }*/
+ // Paper end
public BlockPosition.MutableBlockPosition setValues(int i, int j, int k) { return d(i, j, k);} // Paper - OBFHELPER
public BlockPosition.MutableBlockPosition d(int i, int j, int k) {
- this.b = i;
- this.c = j;
- this.d = k;
+ // Paper start - use xyz
+ this.x = i;
+ this.y = j;
+ this.z = k;
+ // Paper end
return this;
}
@@ -438,23 +449,23 @@ public class BlockPosition extends BaseBlockPosition implements MinecraftSeriali
}
public BlockPosition.MutableBlockPosition c(EnumDirection enumdirection, int i) {
- return this.d(this.b + enumdirection.getAdjacentX() * i, this.c + enumdirection.getAdjacentY() * i, this.d + enumdirection.getAdjacentZ() * i);
+ return this.d(this.x + enumdirection.getAdjacentX() * i, this.y + enumdirection.getAdjacentY() * i, this.z + enumdirection.getAdjacentZ() * i);
}
public BlockPosition.MutableBlockPosition e(int i, int j, int k) {
- return this.d(this.b + i, this.c + j, this.d + k);
+ return this.d(this.x + i, this.y + j, this.z + k);
}
public void o(int i) {
- this.b = i;
+ this.x = i; // Paper change to x
}
public void p(int i) {
- this.c = i;
+ this.y = i; // Paper change to y
}
public void q(int i) {
- this.d = i;
+ this.z = i; // Paper change to z
}
@Override
--
2.22.0