Fixes exhaustion when loading large profiles (Slimefun#4127)

src/main/java/io/github/thebusybiscuit/slimefun4/Threads.java

@@ -0,0 +1,23 @@
+package io.github.thebusybiscuit.slimefun4;
+
+import javax.annotation.ParametersAreNonnullByDefault;
+
+import org.bukkit.plugin.java.JavaPlugin;
+
+public class Threads {
+
+    @ParametersAreNonnullByDefault
+    public static void newThread(JavaPlugin plugin, String name, Runnable runnable) {
+        // TODO: Change to thread pool
+        new Thread(runnable, plugin.getName() + " - " + name).start();
+    }
+
+    public static String getCaller() {
+        // First item will be getting the call stack
+        // Second item will be this call
+        // Third item will be the func we care about being called
+        // And finally will be the caller
+        StackTraceElement element = Thread.currentThread().getStackTrace()[3];
+        return element.getClassName() + "." + element.getMethodName() + ":" + element.getLineNumber();
+    }
+}

src/main/java/io/github/thebusybiscuit/slimefun4/api/player/PlayerProfile.java

@@ -30,6 +30,7 @@
 import io.github.bakedlibs.dough.common.ChatColors;
 import io.github.bakedlibs.dough.common.CommonPatterns;
 import io.github.bakedlibs.dough.config.Config;
+import io.github.thebusybiscuit.slimefun4.Threads;
 import io.github.thebusybiscuit.slimefun4.api.events.AsyncProfileLoadEvent;
 import io.github.thebusybiscuit.slimefun4.api.gps.Waypoint;
 import io.github.thebusybiscuit.slimefun4.api.items.HashedArmorpiece;
@@ -394,6 +395,7 @@ public static boolean get(@Nonnull OfflinePlayer p, @Nonnull Consumer<PlayerProf
         loading.put(uuid, true);
         Slimefun.getThreadService().newThread(Slimefun.instance(), "PlayerProfile#get(" + uuid + ")", () -> {
             PlayerData data = Slimefun.getPlayerStorage().loadPlayerData(p.getUniqueId());
+            loading.remove(uuid);
 
             AsyncProfileLoadEvent event = new AsyncProfileLoadEvent(new PlayerProfile(p, data));
             Bukkit.getPluginManager().callEvent(event);