210a32f26f
Due to some complexity in mojangs complicated chain of juggling whether or not a chunk should be unloaded when the last ticket is removed, many chunks are remaining around in the cache. These chunks are never being targetted for unload because they are vastly out of view distance range and have no reason to be looked at. This is a huge issue for performance because we have to iterate these chunks EVERY TICK... This is what's been leading to high SELF time in Ticking Chunks timings/profiler results. We will now detect these chunks in that iteration, and automatically add it to the unload queue when the chunk is found without any tickets.
63 lines
2.8 KiB
Diff
63 lines
2.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Tue, 14 Jan 2020 14:59:08 -0800
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Subject: [PATCH] Optimise Chunk#getFluid
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Removing the try catch and generally reducing ops should make it
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faster on its own, however removing the try catch makes it
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easier to inline due to code size
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diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
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index 2cb0005909e9a77d2bd594cab0a75b259882cadb..234770236fdc8d37996fb8b7e0b4ed2491e31633 100644
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--- a/src/main/java/net/minecraft/server/Chunk.java
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+++ b/src/main/java/net/minecraft/server/Chunk.java
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@@ -382,17 +382,20 @@ public class Chunk implements IChunkAccess {
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}
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public Fluid a(int i, int j, int k) {
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- try {
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- if (j >= 0 && j >> 4 < this.sections.length) {
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- ChunkSection chunksection = this.sections[j >> 4];
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-
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- if (!ChunkSection.a(chunksection)) {
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- return chunksection.b(i & 15, j & 15, k & 15);
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+ //try { // Paper - remove try catch
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+ // Paper start - reduce the number of ops in this call
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+ int index = j >> 4;
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+ if (index >= 0 && index < this.sections.length) {
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+ ChunkSection chunksection = this.sections[index];
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+
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+ if (chunksection != null) {
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+ return chunksection.blockIds.a((j & 15) << 8 | (k & 15) << 4 | i & 15).getFluid();
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}
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+ // Paper end
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}
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return FluidTypes.EMPTY.h();
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- } catch (Throwable throwable) {
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+ /*} catch (Throwable throwable) { // Paper - remove try catch
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CrashReport crashreport = CrashReport.a(throwable, "Getting fluid state");
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CrashReportSystemDetails crashreportsystemdetails = crashreport.a("Block being got");
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@@ -401,6 +404,7 @@ public class Chunk implements IChunkAccess {
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});
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throw new ReportedException(crashreport);
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}
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+ */ // Paper - remove try catch
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}
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// CraftBukkit start
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diff --git a/src/main/java/net/minecraft/server/ChunkSection.java b/src/main/java/net/minecraft/server/ChunkSection.java
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index 64b625e988f6bb6dc7129b4cb70e266015ab0867..b7b06e082e59f8518be2036637385c7710d524ea 100644
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--- a/src/main/java/net/minecraft/server/ChunkSection.java
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+++ b/src/main/java/net/minecraft/server/ChunkSection.java
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@@ -37,7 +37,7 @@ public class ChunkSection {
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}
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public Fluid b(int i, int j, int k) {
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- return ((IBlockData) this.blockIds.a(i, j, k)).getFluid();
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+ return ((IBlockData) this.blockIds.a(i, j, k)).getFluid(); // 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.
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}
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public void a() {
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