--- /dev/null	2018-04-05 19:09:31.849588610 +0200
+++ new/src/hotspot/share/gc/epsilon/epsilonMemoryPool.cpp	2018-04-26 19:34:12.560760694 +0200
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2017, 2018, Red Hat, Inc. 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 "gc/epsilon/epsilonHeap.hpp"
+#include "epsilonMemoryPool.hpp"
+
+EpsilonMemoryPool::EpsilonMemoryPool(EpsilonHeap* heap) :
+        _heap(heap),
+        CollectedMemoryPool("Epsilon Heap",
+                            heap->capacity(),
+                            heap->max_capacity(),
+                            false) {
+  assert(UseEpsilonGC, "sanity");
+}
+
+MemoryUsage EpsilonMemoryPool::get_memory_usage() {
+  size_t initial_sz = initial_size();
+  size_t max_sz     = max_size();
+  size_t used       = used_in_bytes();
+  size_t committed  = committed_in_bytes();
+
+  return MemoryUsage(initial_sz, used, committed, max_sz);
+}