From f4b6d00080910b49b4c23960d50f8d2ef41e05eb Mon Sep 17 00:00:00 2001 From: Antony Riley 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 68dd17d..d82f4a1 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; @@ -67,8 +70,16 @@ public class RegionFile { int k; + // 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 (j = 0; j < 1024; ++j) { - k = this.c.readInt(); + k = headerAsInts.get(); // Paper this.d[j] = k; if (k != 0 && (k >> 8) + (k & 255) <= this.f.size()) { for (int l = 0; l < (k & 255); ++l) { @@ -78,7 +89,7 @@ public class RegionFile { } for (j = 0; j < 1024; ++j) { - k = this.c.readInt(); + k = headerAsInts.get(); // Paper this.e[j] = k; } } catch (IOException ioexception) { -- 2.7.4