Paper/patches/server/0362-Optimise-Chunk-getFluid.patch

62 lines
3.0 KiB
Diff
Raw Normal View History

2021-06-11 14:02:28 +02:00
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Tue, 14 Jan 2020 14:59:08 -0800
Subject: [PATCH] Optimise Chunk#getFluid
Removing the try catch and generally reducing ops should make it
faster on its own, however removing the try catch makes it
easier to inline due to code size
diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
2022-12-07 20:22:28 +01:00
index 7b28537fda4187036b15ecc04f68ac1c9bf5f67f..1c618cfb63561f4557f8ec71254b6397eb9cc485 100644
2021-06-11 14:02:28 +02:00
--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
Rewrite chunk system (#8177) 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.
2022-09-26 10:02:51 +02:00
@@ -427,18 +427,20 @@ public class LevelChunk extends ChunkAccess {
2021-06-11 14:02:28 +02:00
}
public FluidState getFluidState(int x, int y, int z) {
- try {
2021-06-14 00:05:18 +02:00
- int l = this.getSectionIndex(y);
-
- if (l >= 0 && l < this.sections.length) {
- LevelChunkSection chunksection = this.sections[l];
+ // try { // Paper - remove try catch
2021-06-11 14:02:28 +02:00
+ // Paper start - reduce the number of ops in this call
2021-06-14 00:05:18 +02:00
+ int index = this.getSectionIndex(y);
2021-06-11 14:02:28 +02:00
+ if (index >= 0 && index < this.sections.length) {
+ LevelChunkSection chunksection = this.sections[index];
if (!chunksection.hasOnlyAir()) {
- return chunksection.getFluidState(x & 15, y & 15, z & 15);
2021-06-11 14:02:28 +02:00
+ return chunksection.states.get((y & 15) << 8 | (z & 15) << 4 | x & 15).getFluidState();
+ // Paper end
2021-06-11 14:02:28 +02:00
}
}
return Fluids.EMPTY.defaultFluidState();
2021-06-14 00:05:18 +02:00
+ /* // Paper - remove try catch
} catch (Throwable throwable) {
CrashReport crashreport = CrashReport.forThrowable(throwable, "Getting fluid state");
CrashReportCategory crashreportsystemdetails = crashreport.addCategory("Block being got");
Rewrite chunk system (#8177) 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.
2022-09-26 10:02:51 +02:00
@@ -448,6 +450,7 @@ public class LevelChunk extends ChunkAccess {
2021-06-11 14:02:28 +02:00
});
throw new ReportedException(crashreport);
}
+ */ // Paper - remove try catch
}
// CraftBukkit start
diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
2022-07-21 21:53:04 +02:00
index 785fbcf9bafcdec1c5be213de3d8512690023415..066874d27495dcaa3dea254b7328257e46920357 100644
2021-06-11 14:02:28 +02:00
--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
+++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
2022-06-08 06:06:41 +02:00
@@ -54,7 +54,7 @@ public class LevelChunkSection {
2021-06-11 14:02:28 +02:00
}
public FluidState getFluidState(int x, int y, int z) {
- return ((BlockState) this.states.get(x, y, z)).getFluidState();
2021-06-14 00:05:18 +02:00
+ return this.states.get(x, y, z).getFluidState(); // Paper - diff on change - we expect this to be effectively just getType(x, y, z).getFluid(). If this changes we need to check other patches that use IBlockData#getFluid.
2021-06-11 14:02:28 +02:00
}
public void acquire() {