Update #47 - Singleplayer lag fixes

sources/main/java/com/carrotsearch/hppc/Accountable.java

@@ -0,0 +1,31 @@
+/*
+ * HPPC
+ *
+ * Copyright (C) 2010-2024 Carrot Search s.c. and contributors
+ * All rights reserved.
+ *
+ * Refer to the full license file "LICENSE.txt":
+ * https://github.com/carrotsearch/hppc/blob/master/LICENSE.txt
+ */
+package com.carrotsearch.hppc;
+
+/**
+ * Anything that could be accounted for memory usage
+ *
+ * <p>Partly forked from Lucene tag releases/lucene-solr/8.5.1
+ */
+public interface Accountable {
+  /**
+   * Allocated memory estimation
+   *
+   * @return Ram allocated in bytes
+   */
+  long ramBytesAllocated();
+
+  /**
+   * Bytes that is actually been used
+   *
+   * @return Ram used in bytes
+   */
+  long ramBytesUsed();
+}