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Optimize DataBits

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Remove Debug checks as these are super hot and causing noticeable hits

Before: http://i.imgur.com/nQsMzAE.png
After: http://i.imgur.com/nJ46crB.png

Optimize redundant converting of static fields into an unsigned long each call by precomputing it in ctor
This commit is contained in:
Aikar 2016-04-05 21:38:58 -04:00
parent 55db966770
commit 1056951a73
2 changed files with 102 additions and 0 deletions
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70
paper-server/patches/sources/net/minecraft/util/SimpleBitStorage.java.patch Normal file
View file

@ -0,0 +1,70 @@
--- a/net/minecraft/util/SimpleBitStorage.java
+++ b/net/minecraft/util/SimpleBitStorage.java
@@ -204,8 +204,8 @@
private final long mask;
private final int size;
private final int valuesPerLong;
- private final int divideMul;
- private final int divideAdd;
+ private final int divideMul; private final long divideMulUnsigned; // Paper - Perf: Optimize SimpleBitStorage; referenced in b(int) with 2 Integer.toUnsignedLong calls
+ private final int divideAdd; private final long divideAddUnsigned; // Paper - Perf: Optimize SimpleBitStorage
private final int divideShift;
public SimpleBitStorage(int elementBits, int size, int[] data) {
@@ -248,8 +248,8 @@
this.mask = (1L << elementBits) - 1L;
this.valuesPerLong = (char)(64 / elementBits);
int i = 3 * (this.valuesPerLong - 1);
- this.divideMul = MAGIC[i + 0];
- this.divideAdd = MAGIC[i + 1];
+ this.divideMul = MAGIC[i + 0]; this.divideMulUnsigned = Integer.toUnsignedLong(this.divideMul); // Paper - Perf: Optimize SimpleBitStorage
+ this.divideAdd = MAGIC[i + 1]; this.divideAddUnsigned = Integer.toUnsignedLong(this.divideAdd); // Paper - Perf: Optimize SimpleBitStorage
this.divideShift = MAGIC[i + 2];
int j = (size + this.valuesPerLong - 1) / this.valuesPerLong;
if (data != null) {
@@ -264,15 +264,15 @@
}
private int cellIndex(int index) {
- long l = Integer.toUnsignedLong(this.divideMul);
- long m = Integer.toUnsignedLong(this.divideAdd);
- return (int)((long)index * l + m >> 32 >> this.divideShift);
+ //long l = Integer.toUnsignedLong(this.divideMul); // Paper - Perf: Optimize SimpleBitStorage
+ //long m = Integer.toUnsignedLong(this.divideAdd); // Paper - Perf: Optimize SimpleBitStorage
+ return (int) (index * this.divideMulUnsigned + this.divideAddUnsigned >> 32 >> this.divideShift); // Paper - Perf: Optimize SimpleBitStorage
}
@Override
- public int getAndSet(int index, int value) {
- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
- Validate.inclusiveBetween(0L, this.mask, (long)value);
+ public final int getAndSet(int index, int value) { // Paper - Perf: Optimize SimpleBitStorage
+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
+ //Validate.inclusiveBetween(0L, this.mask, (long)value); // Paper - Perf: Optimize SimpleBitStorage
int i = this.cellIndex(index);
long l = this.data[i];
int j = (index - i * this.valuesPerLong) * this.bits;
@@ -282,9 +282,9 @@
}
@Override
- public void set(int index, int value) {
- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
- Validate.inclusiveBetween(0L, this.mask, (long)value);
+ public final void set(int index, int value) { // Paper - Perf: Optimize SimpleBitStorage
+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
+ //Validate.inclusiveBetween(0L, this.mask, (long)value); // Paper - Perf: Optimize SimpleBitStorage
int i = this.cellIndex(index);
long l = this.data[i];
int j = (index - i * this.valuesPerLong) * this.bits;
@@ -292,8 +292,8 @@
}
@Override
- public int get(int index) {
- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
+ public final int get(int index) { // Paper - Perf: Optimize SimpleBitStorage
+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
int i = this.cellIndex(index);
long l = this.data[i];
int j = (index - i * this.valuesPerLong) * this.bits;

32
paper-server/patches/sources/net/minecraft/util/ZeroBitStorage.java.patch Normal file
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@ -0,0 +1,32 @@
--- a/net/minecraft/util/ZeroBitStorage.java
+++ b/net/minecraft/util/ZeroBitStorage.java
@@ -13,21 +13,21 @@
}
@Override
- public int getAndSet(int index, int value) {
- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
- Validate.inclusiveBetween(0L, 0L, (long)value);
+ public final int getAndSet(int index, int value) { // Paper - Perf: Optimize SimpleBitStorage
+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
+ //Validate.inclusiveBetween(0L, 0L, (long)value); // Paper - Perf: Optimize SimpleBitStorage
return 0;
}
@Override
- public void set(int index, int value) {
- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
- Validate.inclusiveBetween(0L, 0L, (long)value);
+ public final void set(int index, int value) { // Paper - Perf: Optimize SimpleBitStorage
+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
+ //Validate.inclusiveBetween(0L, 0L, (long)value); // Paper - Perf: Optimize SimpleBitStorage
}
@Override
- public int get(int index) {
- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
+ public final int get(int index) { // Paper - Perf: Optimize SimpleBitStorage
+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
return 0;
}