PaperMC/patches/server/0315-Optimise-getChunkAt-calls-for-loaded-chunks.patch
Spottedleaf 38428c0d6c Cleanup MCUtils patch for chunk system
Remove utilities that are unused, as well as replacing
the full chunk map with a concurrentutil implementation.

Additionally, fix the addition/removal of chunks to/from the
full chunk map so that getChunkIfLoaded correctly returns a
non-null chunk when calling the load or unload events.
2024-06-19 10:29:03 -07:00

60 lines
2.7 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sat, 25 Jan 2020 17:04:35 -0800
Subject: [PATCH] Optimise getChunkAt calls for loaded chunks
bypass the need to get a player chunk, then get the either,
then unwrap it...
diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
index 035c33b1e1be4f41e5cbe09bf6c3abd617258cad..097a333487d646c773349cde3cd08026986fd038 100644
--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
@@ -181,6 +181,12 @@ public class ServerChunkCache extends ChunkSource {
return this.getChunk(x, z, leastStatus, create);
}, this.mainThreadProcessor).join();
} else {
+ // Paper start - Perf: Optimise getChunkAt calls for loaded chunks
+ LevelChunk ifLoaded = this.getChunkAtIfLoadedMainThread(x, z);
+ if (ifLoaded != null) {
+ return ifLoaded;
+ }
+ // Paper end - Perf: Optimise getChunkAt calls for loaded chunks
ProfilerFiller gameprofilerfiller = this.level.getProfiler();
gameprofilerfiller.incrementCounter("getChunk");
@@ -224,33 +230,7 @@ public class ServerChunkCache extends ChunkSource {
if (Thread.currentThread() != this.mainThread) {
return null;
} else {
- this.level.getProfiler().incrementCounter("getChunkNow");
- long k = ChunkPos.asLong(chunkX, chunkZ);
-
- ChunkAccess ichunkaccess;
-
- for (int l = 0; l < 4; ++l) {
- if (k == this.lastChunkPos[l] && this.lastChunkStatus[l] == ChunkStatus.FULL) {
- ichunkaccess = this.lastChunk[l];
- return ichunkaccess instanceof LevelChunk ? (LevelChunk) ichunkaccess : null;
- }
- }
-
- ChunkHolder playerchunk = this.getVisibleChunkIfPresent(k);
-
- if (playerchunk == null) {
- return null;
- } else {
- ichunkaccess = playerchunk.getChunkIfPresent(ChunkStatus.FULL);
- if (ichunkaccess != null) {
- this.storeInCache(k, ichunkaccess, ChunkStatus.FULL);
- if (ichunkaccess instanceof LevelChunk) {
- return (LevelChunk) ichunkaccess;
- }
- }
-
- return null;
- }
+ return this.getChunkAtIfLoadedMainThread(chunkX, chunkZ); // Paper - Perf: Optimise getChunkAt calls for loaded chunks
}
}