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path: root/patches/unapplied/server/0096-Async-GameProfileCache-saving.patch
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 16 May 2016 20:47:41 -0400
Subject: [PATCH] Async GameProfileCache saving


diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 135509f4be308179226fa1518e9070977f6cad56..76d9f12e0c2d54ed35cee6a4463d982682d4d641 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1011,7 +1011,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
         } catch (java.lang.InterruptedException ignored) {} // Paper
         if (org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly) {
             MinecraftServer.LOGGER.info("Saving usercache.json");
-            this.getProfileCache().save();
+            this.getProfileCache().save(false); // Paper - Perf: Async GameProfileCache saving
         }
         // Spigot end
 
diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
index e2cb85c8f121837e8a19e003e1e757f431dfaf2b..5d9772a6c35e8f849e8879f510b2c586b148074c 100644
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
@@ -267,7 +267,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
         }
 
         if (this.convertOldUsers()) {
-            this.getProfileCache().save();
+            this.getProfileCache().save(false); // Paper - Perf: Async GameProfileCache saving
         }
 
         if (!OldUsersConverter.serverReadyAfterUserconversion(this)) {
diff --git a/src/main/java/net/minecraft/server/players/GameProfileCache.java b/src/main/java/net/minecraft/server/players/GameProfileCache.java
index a50b72ed08d16cdce19ff01512353412df2ee5ae..197e2ec9f1445a8184d0dde0e9b02b39e3302b91 100644
--- a/src/main/java/net/minecraft/server/players/GameProfileCache.java
+++ b/src/main/java/net/minecraft/server/players/GameProfileCache.java
@@ -117,7 +117,7 @@ public class GameProfileCache {
         GameProfileCache.GameProfileInfo usercache_usercacheentry = new GameProfileCache.GameProfileInfo(profile, date);
 
         this.safeAdd(usercache_usercacheentry);
-        if( !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly ) this.save(); // Spigot - skip saving if disabled
+        if( !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly ) this.save(true); // Spigot - skip saving if disabled // Paper - Perf: Async GameProfileCache saving
     }
 
     private long getNextOperation() {
@@ -150,7 +150,7 @@ public class GameProfileCache {
         }
 
         if (flag && !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly) { // Spigot - skip saving if disabled
-            this.save();
+            this.save(true); // Paper - Perf: Async GameProfileCache saving
         }
 
         return optional;
@@ -262,7 +262,7 @@ public class GameProfileCache {
         return list;
     }
 
-    public void save() {
+    public void save(boolean asyncSave) { // Paper - Perf: Async GameProfileCache saving
         JsonArray jsonarray = new JsonArray();
         DateFormat dateformat = GameProfileCache.createDateFormat();
 
@@ -270,6 +270,7 @@ public class GameProfileCache {
             jsonarray.add(GameProfileCache.writeGameProfile(usercache_usercacheentry, dateformat));
         });
         String s = this.gson.toJson(jsonarray);
+        Runnable save = () -> { // Paper - Perf: Async GameProfileCache saving
 
         try {
             BufferedWriter bufferedwriter = Files.newWriter(this.file, StandardCharsets.UTF_8);
@@ -294,6 +295,14 @@ public class GameProfileCache {
         } catch (IOException ioexception) {
             ;
         }
+        // Paper start - Perf: Async GameProfileCache saving
+        };
+        if (asyncSave) {
+            io.papermc.paper.util.MCUtil.scheduleAsyncTask(save);
+        } else {
+            save.run();
+        }
+        // Paper end - Perf: Async GameProfileCache saving
 
     }