src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/oops/ObjectHeap.java

*** 34,43 ****
--- 34,44 ----
  import sun.jvm.hotspot.debugger.*;
  import sun.jvm.hotspot.gc.cms.*;
  import sun.jvm.hotspot.gc.shared.*;
  import sun.jvm.hotspot.gc.epsilon.*;
  import sun.jvm.hotspot.gc.g1.*;
+ import sun.jvm.hotspot.gc.shenandoah.*;
  import sun.jvm.hotspot.gc.parallel.*;
  import sun.jvm.hotspot.gc.z.*;
  import sun.jvm.hotspot.memory.*;
  import sun.jvm.hotspot.runtime.*;
  import sun.jvm.hotspot.types.*;
*** 365,374 ****
--- 366,379 ----
         PSOldGen oldGen = psh.oldGen();
         addLiveRegions("old ", oldGen.objectSpace().getLiveRegions(), liveRegions);
      } else if (heap instanceof G1CollectedHeap) {
          G1CollectedHeap g1h = (G1CollectedHeap) heap;
          g1h.heapRegionIterate(lrc);
+     } else if (heap instanceof ShenandoahHeap) {
+        // Operation (currently) not supported with Shenandoah GC. Print
+        // a warning and leave the list of live regions empty.
+        System.err.println("Warning: Operation not supported with Shenandoah GC");
      } else if (heap instanceof ZCollectedHeap) {
         // Operation (currently) not supported with ZGC. Print
         // a warning and leave the list of live regions empty.
         System.err.println("Warning: Operation not supported with ZGC");
      } else if (heap instanceof EpsilonHeap) {