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

@@ -34,10 +34,11 @@
 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.*;

@@ -365,10 +366,14 @@
        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) {