mirrors/papermc
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
papermc/Spigot-Server-Patches/0295-Speedup-BlockPos-by-fixing-inlining.patch
Shane Freeder ea855e2b46 Updated Upstream (Bukkit/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

Developers!: You will need to clean up your work/Minecraft/1.13.2 folder
for this

Also, restore a patch that was dropped in the last upstream

Bukkit Changes:
279eeab3 Fix command description not being set
96e2bb18 Remove debug print from SyntheticEventTest

CraftBukkit Changes:
d3ed1516 Fix dangerously threaded beacons
217a293d Don't relocate joptsimple to allow --help to work.
1be05a21 Prepare for imminent Java 12 release
a49270b2 Mappings Update
5259d80c SPIGOT-4669: Fix PlayerTeleportEvent coordinates for relative teleports

Spigot Changes:
e6eb36f2 Rebuild patches
2019-03-20 01:55:16 +00:00

205 lines
8.6 KiB
Diff
Raw Blame History

From 53fd6438952f6854cea9a810e23949c9b027acc1 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 4c7793f86..cc17a414f 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) {
@@ -49,17 +49,19 @@ 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());
diff --git a/src/main/java/net/minecraft/server/BlockPosition.java b/src/main/java/net/minecraft/server/BlockPosition.java
index 80e13dfb2..20cf9255b 100644
--- a/src/main/java/net/minecraft/server/BlockPosition.java
+++ b/src/main/java/net/minecraft/server/BlockPosition.java
@@ -202,18 +202,18 @@ public class BlockPosition extends BaseBlockPosition {
if (this.g == null) {
this.g = new BlockPosition.MutableBlockPosition(i, j, k);
return this.g;
- } else if (this.g.b == l && this.g.c == i1 && this.g.d == j1) {
+ } else if (this.g.x == l && this.g.y == i1 && this.g.z == j1) {
return (BlockPosition.MutableBlockPosition) this.endOfData();
} else {
- if (this.g.b < l) {
- ++this.g.b;
- } else if (this.g.c < i1) {
- this.g.b = i; // Paper - decompile fix Readd line removed by the decompiler
- ++this.g.c;
- } else if (this.g.d < j1) {
- this.g.b = i; // Paper - decompile fix Readd line removed by the decompiler
- this.g.c = j; // Paper - decompile fix Readd line removed by the decompiler
- ++this.g.d;
+ if (this.g.x < l) {
+ ++this.g.x;
+ } else if (this.g.y < i1) {
+ this.g.x = i; // Paper - decompile fix Readd line removed by the decompiler
+ ++this.g.y;
+ } else if (this.g.z < j1) {
+ this.g.x = i; // Paper - decompile fix Readd line removed by the decompiler
+ this.g.y = j; // Paper - decompile fix Readd line removed by the decompiler
+ ++this.g.z;
}
return this.g;
@@ -296,11 +296,12 @@ public class BlockPosition extends BaseBlockPosition {
}
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;
@@ -309,6 +310,7 @@ public class BlockPosition extends BaseBlockPosition {
public boolean isInvalidYLocation() {
return c < 0 || c >= 256;
}
+ */
// Paper end
public MutableBlockPosition() {
@@ -320,10 +322,13 @@ public class BlockPosition extends BaseBlockPosition {
}
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 BlockPosition a(double d0, double d1, double d2) {
@@ -342,6 +347,8 @@ public class BlockPosition extends BaseBlockPosition {
return super.a(enumblockrotation).h();
}
+ /*
+ // Paper start - use parent getters
public int getX() {
return this.b;
}
@@ -352,13 +359,16 @@ public class BlockPosition extends BaseBlockPosition {
public int getZ() {
return this.d;
- }
+ }*/
+ // Paper end
public BlockPosition.MutableBlockPosition setValues(int i, int j, int k) { return c(i, j, k);} // Paper - OBFHELPER
public BlockPosition.MutableBlockPosition c(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;
}
@@ -376,15 +386,15 @@ public class BlockPosition extends BaseBlockPosition {
}
public BlockPosition.MutableBlockPosition c(EnumDirection enumdirection, int i) {
- return this.c(this.b + enumdirection.getAdjacentX() * i, this.c + enumdirection.getAdjacentY() * i, this.d + enumdirection.getAdjacentZ() * i);
+ return this.c(x + enumdirection.getAdjacentX() * i, y + enumdirection.getAdjacentY() * i, z + enumdirection.getAdjacentZ() * i); // Paper - use xyz
}
public BlockPosition.MutableBlockPosition d(int i, int j, int k) {
- return this.c(this.b + i, this.c + j, this.d + k);
+ return this.c(x + i, y + j, z + k); // Paper - use xyz
}
public void p(int i) {
- this.c = i;
+ this.y = i; // Paper change to y
}
public BlockPosition toBlockPosition() { return h(); } // Paper - OBFHELPER
--
2.21.0
Reference in a new issue View git blame Copy permalink