src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/z/ZCollectedHeap.java

@@ -23,25 +23,26 @@
  */
 
 package sun.jvm.hotspot.gc.z;
 
 import java.io.PrintStream;
+import java.util.Iterator;
 
 import sun.jvm.hotspot.debugger.Address;
 import sun.jvm.hotspot.debugger.OopHandle;
 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.runtime.VM;
 import sun.jvm.hotspot.runtime.VMObjectFactory;
 import sun.jvm.hotspot.types.Type;
 import sun.jvm.hotspot.types.TypeDataBase;
 import sun.jvm.hotspot.utilities.BitMapInterface;
 
 // Mirror class for ZCollectedHeap.
 
 public class ZCollectedHeap extends CollectedHeap {
-
     private static long zHeapFieldOffset;
 
     static {
         VM.registerVMInitializedObserver((o, d) -> initialize(VM.getVM().getTypeDataBase()));
     }

@@ -118,10 +119,19 @@
             return handle.toString();
         }
     }
 
     @Override
+    public void liveRegionsIterate(LiveRegionsClosure closure) {
+        Iterator<ZPage> iter = heap().pageTable().activePagesIterator();
+        while (iter.hasNext()) {
+            ZPage page = iter.next();
+            closure.doLiveRegions(page);
+        }
+    }
+
+    @Override
     public BitMapInterface createBitMap(long size) {
         // Ignores the size
         return new ZExternalBitMap(this);
     }
 }