From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E3=84=97=E3=84=A0=CB=8B=20=E3=84=91=E3=84=A7=CB=8A?=
 <tsao-chi@the-lingo.org>
Date: Thu, 5 Jan 2023 09:08:17 +0800
Subject: [PATCH] Akarin: Save Json list asynchronously

Original license: GPL v3
Original project: https://github.com/Akarin-project/Akarin

diff --git a/src/main/java/net/minecraft/server/players/StoredUserList.java b/src/main/java/net/minecraft/server/players/StoredUserList.java
index c524ca1eab9db011f8203835c43e244ff4101e87..b5a31105ca972f5b6a6b74786904631aa0998ce9 100644
--- a/src/main/java/net/minecraft/server/players/StoredUserList.java
+++ b/src/main/java/net/minecraft/server/players/StoredUserList.java
@@ -22,6 +22,7 @@ import java.util.stream.Stream;
 import javax.annotation.Nullable;
 
 import me.titaniumtown.ArrayConstants;
+import io.papermc.paper.util.MCUtil;
 import net.minecraft.Util;
 import net.minecraft.util.GsonHelper;
 import org.slf4j.Logger;
@@ -104,6 +105,7 @@ public abstract class StoredUserList<K, V extends StoredUserEntry<K>> {
     }
 
     public void save() throws IOException {
+        Runnable saveTask = () -> {// Leaf - Akarin - Save json list async
         this.removeExpired(); // Paper - remove expired values before saving
         JsonArray jsonarray = new JsonArray();
         Stream<JsonObject> stream = this.map.values().stream().map((jsonlistentry) -> { // CraftBukkit - decompile error
@@ -115,6 +117,8 @@ public abstract class StoredUserList<K, V extends StoredUserEntry<K>> {
 
         Objects.requireNonNull(jsonarray);
         stream.forEach(jsonarray::add);
+
+        try {// Leaf - Akarin - Save json list async
         BufferedWriter bufferedwriter = Files.newWriter(this.file, StandardCharsets.UTF_8);
 
         try {
@@ -135,6 +139,13 @@ public abstract class StoredUserList<K, V extends StoredUserEntry<K>> {
             bufferedwriter.close();
         }
 
+        // Leaf start - Akarin - Save json list async
+        } catch (Exception e) {
+            StoredUserList.LOGGER.warn("Failed to async save " + this.file, e);
+        }
+        };
+        MCUtil.scheduleAsyncTask(saveTask);
+        // Leaf end - Akarin
     }
 
     public void load() throws IOException {