--- /dev/null	2018-05-14 10:08:09.016338956 +0200
+++ new/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/epsilon/EpsilonHeap.java	2018-06-06 18:21:22.947371342 +0200
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2017, Red Hat, Inc. and/or its affiliates.
+ * 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.
+ *
+ */
+
+package sun.jvm.hotspot.gc.epsilon;
+
+import java.io.*;
+import java.util.*;
+
+import sun.jvm.hotspot.gc.shared.*;
+import sun.jvm.hotspot.code.*;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.types.*;
+import sun.jvm.hotspot.memory.*;
+
+public class EpsilonHeap extends CollectedHeap {
+
+  private static AddressField spaceField;
+  private static Field virtualSpaceField;
+  private ContiguousSpace space;
+  private VirtualSpace virtualSpace;
+
+  static {
+    VM.registerVMInitializedObserver(new Observer() {
+        public void update(Observable o, Object data) {
+          initialize(VM.getVM().getTypeDataBase());
+        }
+      });
+  }
+
+  private static void initialize(TypeDataBase db) {
+    Type type = db.lookupType("EpsilonHeap");
+    spaceField = type.getAddressField("_space");
+    virtualSpaceField = type.getField("_virtual_space");
+  }
+
+  public EpsilonHeap(Address addr) {
+    super(addr);
+    space = new ContiguousSpace(spaceField.getValue(addr));
+    virtualSpace = new VirtualSpace(addr.addOffsetTo(virtualSpaceField.getOffset()));
+  }
+
+  @Override
+  public CollectedHeapName kind() {
+    return CollectedHeapName.EPSILON;
+  }
+
+  public ContiguousSpace space() {
+    return space;
+  }
+
+  @Override
+  public void printOn(PrintStream tty) {
+     MemRegion mr = reservedRegion();
+     tty.println("Epsilon heap");
+     tty.println(" reserved:  [" + mr.start() + ", " + mr.end() + "]");
+     tty.println(" committed: [" + virtualSpace.low() + ", " + virtualSpace.high() + "]");
+     tty.println(" used:      [" + space.bottom() + ", " + space.top() + "]");
+  }
+
+}