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/net/minecraft/server/players/StoredUserList.java b/net/minecraft/server/players/StoredUserList.java
index 39483f7b453d6faedeccc1ab1eda76669395ea5a..1fe9be5381b43d240593c8394977d7ffccd1132b 100644
--- a/net/minecraft/server/players/StoredUserList.java
+++ b/net/minecraft/server/players/StoredUserList.java
@@ -97,13 +97,23 @@ public abstract class StoredUserList<K, V extends StoredUserEntry<K>> {
     }
 
     public void save() throws IOException {
+        Runnable saveTask = () -> {// Leaf - Akarin - Save Json list asynchronously
         this.removeExpired(); // Paper - remove expired values before saving
         JsonArray jsonArray = new JsonArray();
         this.map.values().stream().map(storedEntry -> Util.make(new JsonObject(), storedEntry::serialize)).forEach(jsonArray::add);
 
+        try { // Leaf - Akarin - Save Json list asynchronously
         try (BufferedWriter writer = Files.newWriter(this.file, StandardCharsets.UTF_8)) {
             GSON.toJson(jsonArray, GSON.newJsonWriter(writer));
         }
+
+        // Leaf start - Akarin - Save Json list asynchronously
+        } catch (Exception e) {
+            StoredUserList.LOGGER.warn("Failed to save {} asynchronously", this.file, e);
+        }
+        };
+        io.papermc.paper.util.MCUtil.scheduleAsyncTask(saveTask);
+        // Leaf end - Akarin - Save Json list asynchronously
     }
 
     public void load() throws IOException {