papermc/Spigot-Server-Patches/0087-Reduce-IO-ops-opening-a-new-region-file.patch
Aikar d089acb3bd
Switch to using ForgeFlower for Paper Only mc-dev imports
ForgeFlower is better than Spigots FernFlower at decompiling the source.

However, in order to maintain the CraftBukkit patches, we must keep
using spigots for the primary.

However, for any file that we import on top of Spigots imported files
there is nothing stopping us from using better decompiled files.

So these changes will use ForgeFlower to maintain a better set of
decomped files, so anything we add on top of Paper can start off
in a better spot.
2018-08-31 23:47:57 -04:00

53 lines
2 KiB
Diff

From 7e1a19b733518affda90a116c3576335ae14f565 Mon Sep 17 00:00:00 2001
From: Antony Riley <antony@cyberiantiger.org>
Date: Tue, 29 Mar 2016 06:56:23 +0300
Subject: [PATCH] Reduce IO ops opening a new region file.
diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
index f4405be395..5d2853b9ce 100644
--- a/src/main/java/net/minecraft/server/RegionFile.java
+++ b/src/main/java/net/minecraft/server/RegionFile.java
@@ -8,9 +8,12 @@ import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
+import java.io.EOFException;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
+import java.nio.ByteBuffer;
+import java.nio.IntBuffer;
import java.util.List;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.GZIPInputStream;
@@ -60,8 +63,16 @@ public class RegionFile {
this.f.set(1, false);
this.c.seek(0L);
+ // Paper Start
+ ByteBuffer header = ByteBuffer.allocate(8192);
+ while (header.hasRemaining()) {
+ if (this.c.getChannel().read(header) == -1) throw new EOFException();
+ }
+ header.clear();
+ IntBuffer headerAsInts = header.asIntBuffer();
+ // Paper End
for(int j1 = 0; j1 < 1024; ++j1) {
- int k = this.c.readInt();
+ int k = headerAsInts.get(); // Paper
this.d[j1] = k;
if (k != 0 && (k >> 8) + (k & 255) <= this.f.size()) {
for(int l = 0; l < (k & 255); ++l) {
@@ -71,7 +82,7 @@ public class RegionFile {
}
for(int k1 = 0; k1 < 1024; ++k1) {
- int l1 = this.c.readInt();
+ int l1 = headerAsInts.get(); // Paper
this.e[k1] = l1;
}
} catch (IOException ioexception) {
--
2.18.0