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

rev 54717 : imported patch 8223306

@@ -355,11 +355,11 @@
     // FIXME: consider adding fewer boundaries to live region list.
     // Theoretically only need to stop at TLAB's top and resume at its
     // end.
 
     if (VM.getVM().getUseTLAB()) {
-      for (JavaThread thread = VM.getVM().getThreads().first(); thread != null; thread = thread.next()) {
+        VM.getVM().getThreads().doJavaThreads((thread) -> {
         ThreadLocalAllocBuffer tlab = thread.tlab();
         if (tlab.start() != null) {
           if ((tlab.top() == null) || (tlab.end() == null)) {
             System.err.print("Warning: skipping invalid TLAB for thread ");
             thread.printThreadIDOn(System.err);

@@ -379,11 +379,11 @@
             liveRegions.add(tlab.start());
             liveRegions.add(tlab.top());
             liveRegions.add(tlab.hardEnd());
           }
         }
-      }
+      });
     }
 
     // Now sort live regions
     sortLiveRegions(liveRegions);