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01a13871de
Patch documentation to come Issues with the old system that are fixed now: - World generation does not scale with cpu cores effectively. - Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps. - Unreliable prioritisation of chunk gen/load calls that block the main thread. - Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved. - Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal. - Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles. The above list is not complete. The patch documentation will complete it. New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil. Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft. The old legacy chunk system patches have been moved to the removed folder in case we need them again.
119 lines
5.8 KiB
Diff
119 lines
5.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Tue, 5 Apr 2016 21:38:58 -0400
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Subject: [PATCH] Optimize DataBits
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Remove Debug checks as these are super hot and causing noticeable hits
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Before: http://i.imgur.com/nQsMzAE.png
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After: http://i.imgur.com/nJ46crB.png
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Optimize redundant converting of static fields into an unsigned long each call by precomputing it in ctor
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diff --git a/src/main/java/net/minecraft/util/SimpleBitStorage.java b/src/main/java/net/minecraft/util/SimpleBitStorage.java
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index c8ae9d25eedb7cb2d9f95b799a507727b655f11f..9b81ce9d85cba07e9752c29fb5a842c4b00aa873 100644
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--- a/src/main/java/net/minecraft/util/SimpleBitStorage.java
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+++ b/src/main/java/net/minecraft/util/SimpleBitStorage.java
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@@ -11,8 +11,8 @@ public class SimpleBitStorage implements BitStorage {
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private final long mask;
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private final int size;
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private final int valuesPerLong;
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- private final int divideMul;
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- private final int divideAdd;
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+ private final int divideMul; private final long divideMulUnsigned; // Paper - referenced in b(int) with 2 Integer.toUnsignedLong calls
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+ private final int divideAdd; private final long divideAddUnsigned; // Paper
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private final int divideShift;
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public SimpleBitStorage(int elementBits, int size, int[] data) {
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@@ -56,8 +56,8 @@ public class SimpleBitStorage implements BitStorage {
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this.mask = (1L << elementBits) - 1L;
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this.valuesPerLong = (char)(64 / elementBits);
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int i = 3 * (this.valuesPerLong - 1);
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- this.divideMul = MAGIC[i + 0];
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- this.divideAdd = MAGIC[i + 1];
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+ this.divideMul = MAGIC[i + 0]; this.divideMulUnsigned = Integer.toUnsignedLong(this.divideMul); // Paper
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+ this.divideAdd = MAGIC[i + 1]; this.divideAddUnsigned = Integer.toUnsignedLong(this.divideAdd); // Paper
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this.divideShift = MAGIC[i + 2];
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int j = (size + this.valuesPerLong - 1) / this.valuesPerLong;
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if (data != null) {
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@@ -73,15 +73,15 @@ public class SimpleBitStorage implements BitStorage {
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}
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private int cellIndex(int index) {
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- long l = Integer.toUnsignedLong(this.divideMul);
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- long m = Integer.toUnsignedLong(this.divideAdd);
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- return (int)((long)index * l + m >> 32 >> this.divideShift);
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+ //long l = Integer.toUnsignedLong(this.divideMul); // Paper
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+ //long m = Integer.toUnsignedLong(this.divideAdd); // Paper
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+ return (int) ((long) index * this.divideMulUnsigned + this.divideAddUnsigned >> 32 >> this.divideShift); // Paper
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}
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@Override
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- public int getAndSet(int index, int value) {
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- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
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- Validate.inclusiveBetween(0L, this.mask, (long)value);
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+ public final int getAndSet(int index, int value) { // Paper - make final for inline
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
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+ //Validate.inclusiveBetween(0L, this.mask, (long)value); // Paper
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int i = this.cellIndex(index);
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long l = this.data[i];
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int j = (index - i * this.valuesPerLong) * this.bits;
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@@ -91,9 +91,9 @@ public class SimpleBitStorage implements BitStorage {
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}
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@Override
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- public void set(int index, int value) {
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- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
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- Validate.inclusiveBetween(0L, this.mask, (long)value);
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+ public final void set(int index, int value) { // Paper - make final for inline
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
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+ //Validate.inclusiveBetween(0L, this.mask, (long)value); // Paper
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int i = this.cellIndex(index);
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long l = this.data[i];
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int j = (index - i * this.valuesPerLong) * this.bits;
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@@ -101,8 +101,8 @@ public class SimpleBitStorage implements BitStorage {
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}
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@Override
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- public int get(int index) {
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- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
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+ public final int get(int index) { // Paper - make final for inline
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
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int i = this.cellIndex(index);
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long l = this.data[i];
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int j = (index - i * this.valuesPerLong) * this.bits;
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diff --git a/src/main/java/net/minecraft/util/ZeroBitStorage.java b/src/main/java/net/minecraft/util/ZeroBitStorage.java
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index 172e7a0761724cc802387e613258830a0defb04a..9686ce7536c9924b1b2aced4f013f46759cbc72e 100644
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--- a/src/main/java/net/minecraft/util/ZeroBitStorage.java
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+++ b/src/main/java/net/minecraft/util/ZeroBitStorage.java
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@@ -13,21 +13,21 @@ public class ZeroBitStorage implements BitStorage {
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}
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@Override
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- public int getAndSet(int index, int value) {
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- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
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- Validate.inclusiveBetween(0L, 0L, (long)value);
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+ public final int getAndSet(int index, int value) { // Paper - make final for inline
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
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+ //Validate.inclusiveBetween(0L, 0L, (long)value); // Paper
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return 0;
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}
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@Override
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- public void set(int index, int value) {
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- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
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- Validate.inclusiveBetween(0L, 0L, (long)value);
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+ public final void set(int index, int value) { // Paper - make final for inline
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
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+ //Validate.inclusiveBetween(0L, 0L, (long)value); // Paper
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}
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@Override
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- public int get(int index) {
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- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
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+ public final int get(int index) { // Paper - make final for inline
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
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return 0;
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}
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