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Patch DimensionSavedDataManager to not spam FS mkdirs requests for 

empty files that don't exist yet, and don't contain data. Should
result in a significant performance improvement for those with slower disks.

Signed-off-by: cpw <cpw+github@weeksfamily.ca>
This commit is contained in:
cpw 2019-02-24 13:03:11 -05:00
parent 8d1ff45c71
commit c219416bb8
No known key found for this signature in database
GPG Key ID: 8EB3DF749553B1B7
2 changed files with 42 additions and 0 deletions
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20
patches/minecraft/net/minecraft/world/storage/DimensionSavedDataManager.java.patch Normal file
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@ -0,0 +1,20 @@
--- a/net/minecraft/world/storage/DimensionSavedDataManager.java
+++ b/net/minecraft/world/storage/DimensionSavedDataManager.java
@@ -38,6 +38,7 @@
@Nullable
public <T extends WorldSavedData> T func_201067_a(Function<String, T> p_201067_1_, String p_201067_2_) {
WorldSavedData worldsaveddata = this.field_212778_c.get(p_201067_2_);
+ if (worldsaveddata == net.minecraftforge.common.util.DummyWorldSaveData.DUMMY) return null;
if (worldsaveddata == null && this.field_212780_e != null) {
try {
File file1 = this.field_212780_e.func_212423_a(this.field_212777_b, p_201067_2_);
@@ -45,6 +46,9 @@
worldsaveddata = (WorldSavedData)p_201067_1_.apply(p_201067_2_);
worldsaveddata.func_76184_a(func_212774_a(this.field_212780_e, this.field_212777_b, p_201067_2_, 1631).func_74775_l("data"));
this.field_212778_c.put(p_201067_2_, worldsaveddata);
+ } else {
+ this.field_212778_c.put(p_201067_2_, net.minecraftforge.common.util.DummyWorldSaveData.DUMMY);
+ return null;
}
} catch (Exception exception) {
field_212776_a.error("Error loading saved data: {}", p_201067_2_, exception);

22
src/main/java/net/minecraftforge/common/util/DummyWorldSaveData.java Normal file
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@ -0,0 +1,22 @@
package net.minecraftforge.common.util;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.world.storage.WorldSavedData;
public class DummyWorldSaveData extends WorldSavedData {
public static final DummyWorldSaveData DUMMY = new DummyWorldSaveData();
private DummyWorldSaveData() {
super("DUMMYDUMMY \uD83D\uDC4C\uD83D\uDC4C\uD83D\uDC4C");
}
@Override
public void read(final NBTTagCompound nbt) {
// NOOP
}
@Override
public NBTTagCompound write(final NBTTagCompound compound) {
// NOOP
return null;
}
}