--- /dev/null	2020-09-04 12:37:41.765504620 +0200
+++ new/src/hotspot/share/memory/metaspace/msRunningCounters.cpp	2020-09-04 13:58:05.893456525 +0200
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020 SAP SE. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "memory/metaspace/msChunkManager.hpp"
+#include "memory/metaspace/msCounter.hpp"
+#include "memory/metaspace/msRunningCounters.hpp"
+#include "memory/metaspace/msVirtualSpaceList.hpp"
+
+namespace metaspace {
+
+SizeAtomicCounter RunningCounters::_used_class_counter;
+SizeAtomicCounter RunningCounters::_used_nonclass_counter;
+
+// Return reserved size, in words, for Metaspace
+size_t RunningCounters::reserved_words() {
+  return reserved_words_class() + reserved_words_nonclass();
+}
+
+size_t RunningCounters::reserved_words_class() {
+  VirtualSpaceList* vs = VirtualSpaceList::vslist_class();
+  return vs != NULL ? vs->reserved_words() : 0;
+}
+
+size_t RunningCounters::reserved_words_nonclass() {
+  return VirtualSpaceList::vslist_nonclass()->reserved_words();
+}
+
+// Return total committed size, in words, for Metaspace
+size_t RunningCounters::committed_words() {
+  return committed_words_class() + committed_words_nonclass();
+}
+
+size_t RunningCounters::committed_words_class() {
+  VirtualSpaceList* vs = VirtualSpaceList::vslist_class();
+  return vs != NULL ? vs->committed_words() : 0;
+}
+
+size_t RunningCounters::committed_words_nonclass() {
+  return VirtualSpaceList::vslist_nonclass()->committed_words();
+}
+
+// ---- used chunks -----
+
+// Returns size, in words, used for metadata.
+size_t RunningCounters::used_words() {
+  return used_words_class() + used_words_nonclass();
+}
+
+size_t RunningCounters::used_words_class() {
+  return _used_class_counter.get();
+}
+
+size_t RunningCounters::used_words_nonclass() {
+  return _used_nonclass_counter.get();
+}
+
+// ---- free chunks -----
+
+// Returns size, in words, of all chunks in all freelists.
+size_t RunningCounters::free_chunks_words() {
+  return free_chunks_words_class() + free_chunks_words_nonclass();
+}
+
+size_t RunningCounters::free_chunks_words_class() {
+  ChunkManager* cm = ChunkManager::chunkmanager_class();
+  return cm != NULL ? cm->total_word_size() : 0;
+}
+
+size_t RunningCounters::free_chunks_words_nonclass() {
+  return ChunkManager::chunkmanager_nonclass()->total_word_size();
+}
+
+} // namespace metaspace
+