--- old/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/shenandoah/ShenandoahHeap.java	2019-02-15 20:10:28.243531909 +0100
+++ new/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/shenandoah/ShenandoahHeap.java	2019-02-15 20:10:27.659531914 +0100
@@ -25,6 +25,7 @@
 
 import sun.jvm.hotspot.gc.shared.CollectedHeap;
 import sun.jvm.hotspot.gc.shared.CollectedHeapName;
+import sun.jvm.hotspot.gc.shared.LiveRegionsClosure;
 import sun.jvm.hotspot.debugger.Address;
 import sun.jvm.hotspot.runtime.VM;
 import sun.jvm.hotspot.types.Type;
@@ -64,6 +65,11 @@
     }
 
     @Override
+    public long capacity() {
+        return numOfRegions() * ShenandoahHeapRegion.regionSizeBytes();
+    }
+
+    @Override
     public long used() {
         return used.getValue(addr);
     }
@@ -73,6 +79,12 @@
     }
 
     @Override
+    public void liveRegionsIterate(LiveRegionsClosure closure) {
+        // Operation (currently) not supported with Shenandoah GC.
+        System.err.println("Warning: Operation not supported with Shenandoah GC");
+    }
+
+    @Override
     public void printOn(PrintStream tty) {
         MemRegion mr = reservedRegion();
         tty.print("Shenandoah heap");